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linux/drivers/rtc/rtc-da9052.c

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rtc: driver for DA9052/53 PMIC v1 RTC Driver for Dialog Semiconductor DA9052/53 PMICs. This patch is functionally tested on Samsung SMDKV6410. [akpm@linux-foundation.org: clean up file header layout, remove unneeded initialisation of local arrays] Signed-off-by: David Dajun Chen <dchen@diasemi.com> Signed-off-by: Ashish Jangam <ashish.jangam@kpitcummins.com> Cc: Paul Gortmaker <p_gortmaker@yahoo.com> Cc: David Dajun Chen <dchen@diasemi.com> Cc: Samuel Ortiz <sameo@linux.intel.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-03-23 15:02:36 -07:00
drivers/rtc/rtc-da9052.c: use PTR_RET() Use of PTR_RET() simplifies the code. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Cc: David Dajun Chen <dchen@diasemi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-07-03 15:07:48 -07:00
drivers/rtc/rtc-da9052.c: add extra reads with timeouts to avoid returning partially updated values The RTC is in a different clock domain so a quick read after write can retrieve a mangled value of the old/new values Signed-off-by: Adam Ward <adam.ward.opensource@diasemi.com> Tested-by: Adam Ward <adam.ward.opensource@diasemi.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-04-16 12:45:26 -07:00
rtc: driver for DA9052/53 PMIC v1 RTC Driver for Dialog Semiconductor DA9052/53 PMICs. This patch is functionally tested on Samsung SMDKV6410. [akpm@linux-foundation.org: clean up file header layout, remove unneeded initialisation of local arrays] Signed-off-by: David Dajun Chen <dchen@diasemi.com> Signed-off-by: Ashish Jangam <ashish.jangam@kpitcummins.com> Cc: Paul Gortmaker <p_gortmaker@yahoo.com> Cc: David Dajun Chen <dchen@diasemi.com> Cc: Samuel Ortiz <sameo@linux.intel.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-03-23 15:02:36 -07:00
drivers/rtc/rtc-da9052.c: ALARM causes interrupt storm Setting the alarm to a time not on a minute boundary results in repeated interrupts being generated by the DA9052/3 PMIC device until the kernel RTC core sees that the alarm has rung. Sometimes the number and frequency of interrupts can cause the kernel to disable the IRQ line used by the DA9052/3 PMIC with disasterous consequences. This patch fixes the problem. Even though the DA9052/3 PMIC is capable generating periodic interrupts, ie TICKS, the method used to distinguish RTC_AF from RTC_PF events was flawed and can not work in conjunction with the regmap_irq kernel core. Thus that flawed detection has also been removed by the DA9052/3 PMIC RTC driver's irq handler, so that it no longer reports the wrong type of event to the kernel RTC core. The internal static functions within the DA9052/3 PMIC RTC driver have been changed to pass the 'da9052_rtc' structure instead of the 'da9052' because there is no backwards pointer from the 'da9052' structure. This patch fixes the three issues described above. The first is serious because usiing the RTC alarm set to a non minute boundary will eventually cause all component drivers that depend on the interrupt line to fail. The solution adopted is to round up to alarm time to the next highest minute. The second bug, reporting a RTC_PF event instead of an RTC_AF event turns out to not matter with the current implementation of the kernel RTC core as it seems to ignore the event type. However, should that change in the future it is better to fix the issue now and not have 'problems waiting to happen' The third set of changes are to make the da9052_rtc structure available to all the local internal functions in the driver. This was done during testing so that diagnostic data could be stored there. Should the solution to the first issue be found not acceptable, then the alternative of using the TICKS interrupt at the fixed one second interval in order to step to the exact second of the requested alarm requires an extra (alarm time) piece of data to be stored. In devices that use the alarm function to wake up from sleep, accuracy to the second will result in the device being awake for up to nearly a minute longer than expected. Signed-off-by: Anthony Olech <anthony.olech.opensource@diasemi.com> Cc: David Dajun Chen <dchen@diasemi.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-06-06 14:35:54 -07:00
rtc: driver for DA9052/53 PMIC v1 RTC Driver for Dialog Semiconductor DA9052/53 PMICs. This patch is functionally tested on Samsung SMDKV6410. [akpm@linux-foundation.org: clean up file header layout, remove unneeded initialisation of local arrays] Signed-off-by: David Dajun Chen <dchen@diasemi.com> Signed-off-by: Ashish Jangam <ashish.jangam@kpitcummins.com> Cc: Paul Gortmaker <p_gortmaker@yahoo.com> Cc: David Dajun Chen <dchen@diasemi.com> Cc: Samuel Ortiz <sameo@linux.intel.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-03-23 15:02:36 -07:00
drivers/rtc/rtc-da9052.c: add extra reads with timeouts to avoid returning partially updated values The RTC is in a different clock domain so a quick read after write can retrieve a mangled value of the old/new values Signed-off-by: Adam Ward <adam.ward.opensource@diasemi.com> Tested-by: Adam Ward <adam.ward.opensource@diasemi.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-04-16 12:45:26 -07:00
rtc: driver for DA9052/53 PMIC v1 RTC Driver for Dialog Semiconductor DA9052/53 PMICs. This patch is functionally tested on Samsung SMDKV6410. [akpm@linux-foundation.org: clean up file header layout, remove unneeded initialisation of local arrays] Signed-off-by: David Dajun Chen <dchen@diasemi.com> Signed-off-by: Ashish Jangam <ashish.jangam@kpitcummins.com> Cc: Paul Gortmaker <p_gortmaker@yahoo.com> Cc: David Dajun Chen <dchen@diasemi.com> Cc: Samuel Ortiz <sameo@linux.intel.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-03-23 15:02:36 -07:00
drivers/rtc/rtc-da9052.c: ALARM causes interrupt storm Setting the alarm to a time not on a minute boundary results in repeated interrupts being generated by the DA9052/3 PMIC device until the kernel RTC core sees that the alarm has rung. Sometimes the number and frequency of interrupts can cause the kernel to disable the IRQ line used by the DA9052/3 PMIC with disasterous consequences. This patch fixes the problem. Even though the DA9052/3 PMIC is capable generating periodic interrupts, ie TICKS, the method used to distinguish RTC_AF from RTC_PF events was flawed and can not work in conjunction with the regmap_irq kernel core. Thus that flawed detection has also been removed by the DA9052/3 PMIC RTC driver's irq handler, so that it no longer reports the wrong type of event to the kernel RTC core. The internal static functions within the DA9052/3 PMIC RTC driver have been changed to pass the 'da9052_rtc' structure instead of the 'da9052' because there is no backwards pointer from the 'da9052' structure. This patch fixes the three issues described above. The first is serious because usiing the RTC alarm set to a non minute boundary will eventually cause all component drivers that depend on the interrupt line to fail. The solution adopted is to round up to alarm time to the next highest minute. The second bug, reporting a RTC_PF event instead of an RTC_AF event turns out to not matter with the current implementation of the kernel RTC core as it seems to ignore the event type. However, should that change in the future it is better to fix the issue now and not have 'problems waiting to happen' The third set of changes are to make the da9052_rtc structure available to all the local internal functions in the driver. This was done during testing so that diagnostic data could be stored there. Should the solution to the first issue be found not acceptable, then the alternative of using the TICKS interrupt at the fixed one second interval in order to step to the exact second of the requested alarm requires an extra (alarm time) piece of data to be stored. In devices that use the alarm function to wake up from sleep, accuracy to the second will result in the device being awake for up to nearly a minute longer than expected. Signed-off-by: Anthony Olech <anthony.olech.opensource@diasemi.com> Cc: David Dajun Chen <dchen@diasemi.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-06-06 14:35:54 -07:00
rtc: driver for DA9052/53 PMIC v1 RTC Driver for Dialog Semiconductor DA9052/53 PMICs. This patch is functionally tested on Samsung SMDKV6410. [akpm@linux-foundation.org: clean up file header layout, remove unneeded initialisation of local arrays] Signed-off-by: David Dajun Chen <dchen@diasemi.com> Signed-off-by: Ashish Jangam <ashish.jangam@kpitcummins.com> Cc: Paul Gortmaker <p_gortmaker@yahoo.com> Cc: David Dajun Chen <dchen@diasemi.com> Cc: Samuel Ortiz <sameo@linux.intel.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-03-23 15:02:36 -07:00
drivers/rtc/rtc-da9052.c: ALARM causes interrupt storm Setting the alarm to a time not on a minute boundary results in repeated interrupts being generated by the DA9052/3 PMIC device until the kernel RTC core sees that the alarm has rung. Sometimes the number and frequency of interrupts can cause the kernel to disable the IRQ line used by the DA9052/3 PMIC with disasterous consequences. This patch fixes the problem. Even though the DA9052/3 PMIC is capable generating periodic interrupts, ie TICKS, the method used to distinguish RTC_AF from RTC_PF events was flawed and can not work in conjunction with the regmap_irq kernel core. Thus that flawed detection has also been removed by the DA9052/3 PMIC RTC driver's irq handler, so that it no longer reports the wrong type of event to the kernel RTC core. The internal static functions within the DA9052/3 PMIC RTC driver have been changed to pass the 'da9052_rtc' structure instead of the 'da9052' because there is no backwards pointer from the 'da9052' structure. This patch fixes the three issues described above. The first is serious because usiing the RTC alarm set to a non minute boundary will eventually cause all component drivers that depend on the interrupt line to fail. The solution adopted is to round up to alarm time to the next highest minute. The second bug, reporting a RTC_PF event instead of an RTC_AF event turns out to not matter with the current implementation of the kernel RTC core as it seems to ignore the event type. However, should that change in the future it is better to fix the issue now and not have 'problems waiting to happen' The third set of changes are to make the da9052_rtc structure available to all the local internal functions in the driver. This was done during testing so that diagnostic data could be stored there. Should the solution to the first issue be found not acceptable, then the alternative of using the TICKS interrupt at the fixed one second interval in order to step to the exact second of the requested alarm requires an extra (alarm time) piece of data to be stored. In devices that use the alarm function to wake up from sleep, accuracy to the second will result in the device being awake for up to nearly a minute longer than expected. Signed-off-by: Anthony Olech <anthony.olech.opensource@diasemi.com> Cc: David Dajun Chen <dchen@diasemi.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-06-06 14:35:54 -07:00
rtc: driver for DA9052/53 PMIC v1 RTC Driver for Dialog Semiconductor DA9052/53 PMICs. This patch is functionally tested on Samsung SMDKV6410. [akpm@linux-foundation.org: clean up file header layout, remove unneeded initialisation of local arrays] Signed-off-by: David Dajun Chen <dchen@diasemi.com> Signed-off-by: Ashish Jangam <ashish.jangam@kpitcummins.com> Cc: Paul Gortmaker <p_gortmaker@yahoo.com> Cc: David Dajun Chen <dchen@diasemi.com> Cc: Samuel Ortiz <sameo@linux.intel.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-03-23 15:02:36 -07:00
drivers/rtc/rtc-da9052.c: ALARM causes interrupt storm Setting the alarm to a time not on a minute boundary results in repeated interrupts being generated by the DA9052/3 PMIC device until the kernel RTC core sees that the alarm has rung. Sometimes the number and frequency of interrupts can cause the kernel to disable the IRQ line used by the DA9052/3 PMIC with disasterous consequences. This patch fixes the problem. Even though the DA9052/3 PMIC is capable generating periodic interrupts, ie TICKS, the method used to distinguish RTC_AF from RTC_PF events was flawed and can not work in conjunction with the regmap_irq kernel core. Thus that flawed detection has also been removed by the DA9052/3 PMIC RTC driver's irq handler, so that it no longer reports the wrong type of event to the kernel RTC core. The internal static functions within the DA9052/3 PMIC RTC driver have been changed to pass the 'da9052_rtc' structure instead of the 'da9052' because there is no backwards pointer from the 'da9052' structure. This patch fixes the three issues described above. The first is serious because usiing the RTC alarm set to a non minute boundary will eventually cause all component drivers that depend on the interrupt line to fail. The solution adopted is to round up to alarm time to the next highest minute. The second bug, reporting a RTC_PF event instead of an RTC_AF event turns out to not matter with the current implementation of the kernel RTC core as it seems to ignore the event type. However, should that change in the future it is better to fix the issue now and not have 'problems waiting to happen' The third set of changes are to make the da9052_rtc structure available to all the local internal functions in the driver. This was done during testing so that diagnostic data could be stored there. Should the solution to the first issue be found not acceptable, then the alternative of using the TICKS interrupt at the fixed one second interval in order to step to the exact second of the requested alarm requires an extra (alarm time) piece of data to be stored. In devices that use the alarm function to wake up from sleep, accuracy to the second will result in the device being awake for up to nearly a minute longer than expected. Signed-off-by: Anthony Olech <anthony.olech.opensource@diasemi.com> Cc: David Dajun Chen <dchen@diasemi.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-06-06 14:35:54 -07:00
rtc: driver for DA9052/53 PMIC v1 RTC Driver for Dialog Semiconductor DA9052/53 PMICs. This patch is functionally tested on Samsung SMDKV6410. [akpm@linux-foundation.org: clean up file header layout, remove unneeded initialisation of local arrays] Signed-off-by: David Dajun Chen <dchen@diasemi.com> Signed-off-by: Ashish Jangam <ashish.jangam@kpitcummins.com> Cc: Paul Gortmaker <p_gortmaker@yahoo.com> Cc: David Dajun Chen <dchen@diasemi.com> Cc: Samuel Ortiz <sameo@linux.intel.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-03-23 15:02:36 -07:00
drivers/rtc/rtc-da9052.c: ALARM causes interrupt storm Setting the alarm to a time not on a minute boundary results in repeated interrupts being generated by the DA9052/3 PMIC device until the kernel RTC core sees that the alarm has rung. Sometimes the number and frequency of interrupts can cause the kernel to disable the IRQ line used by the DA9052/3 PMIC with disasterous consequences. This patch fixes the problem. Even though the DA9052/3 PMIC is capable generating periodic interrupts, ie TICKS, the method used to distinguish RTC_AF from RTC_PF events was flawed and can not work in conjunction with the regmap_irq kernel core. Thus that flawed detection has also been removed by the DA9052/3 PMIC RTC driver's irq handler, so that it no longer reports the wrong type of event to the kernel RTC core. The internal static functions within the DA9052/3 PMIC RTC driver have been changed to pass the 'da9052_rtc' structure instead of the 'da9052' because there is no backwards pointer from the 'da9052' structure. This patch fixes the three issues described above. The first is serious because usiing the RTC alarm set to a non minute boundary will eventually cause all component drivers that depend on the interrupt line to fail. The solution adopted is to round up to alarm time to the next highest minute. The second bug, reporting a RTC_PF event instead of an RTC_AF event turns out to not matter with the current implementation of the kernel RTC core as it seems to ignore the event type. However, should that change in the future it is better to fix the issue now and not have 'problems waiting to happen' The third set of changes are to make the da9052_rtc structure available to all the local internal functions in the driver. This was done during testing so that diagnostic data could be stored there. Should the solution to the first issue be found not acceptable, then the alternative of using the TICKS interrupt at the fixed one second interval in order to step to the exact second of the requested alarm requires an extra (alarm time) piece of data to be stored. In devices that use the alarm function to wake up from sleep, accuracy to the second will result in the device being awake for up to nearly a minute longer than expected. Signed-off-by: Anthony Olech <anthony.olech.opensource@diasemi.com> Cc: David Dajun Chen <dchen@diasemi.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-06-06 14:35:54 -07:00
rtc: driver for DA9052/53 PMIC v1 RTC Driver for Dialog Semiconductor DA9052/53 PMICs. This patch is functionally tested on Samsung SMDKV6410. [akpm@linux-foundation.org: clean up file header layout, remove unneeded initialisation of local arrays] Signed-off-by: David Dajun Chen <dchen@diasemi.com> Signed-off-by: Ashish Jangam <ashish.jangam@kpitcummins.com> Cc: Paul Gortmaker <p_gortmaker@yahoo.com> Cc: David Dajun Chen <dchen@diasemi.com> Cc: Samuel Ortiz <sameo@linux.intel.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-03-23 15:02:36 -07:00
drivers/rtc/rtc-da9052.c: ALARM causes interrupt storm Setting the alarm to a time not on a minute boundary results in repeated interrupts being generated by the DA9052/3 PMIC device until the kernel RTC core sees that the alarm has rung. Sometimes the number and frequency of interrupts can cause the kernel to disable the IRQ line used by the DA9052/3 PMIC with disasterous consequences. This patch fixes the problem. Even though the DA9052/3 PMIC is capable generating periodic interrupts, ie TICKS, the method used to distinguish RTC_AF from RTC_PF events was flawed and can not work in conjunction with the regmap_irq kernel core. Thus that flawed detection has also been removed by the DA9052/3 PMIC RTC driver's irq handler, so that it no longer reports the wrong type of event to the kernel RTC core. The internal static functions within the DA9052/3 PMIC RTC driver have been changed to pass the 'da9052_rtc' structure instead of the 'da9052' because there is no backwards pointer from the 'da9052' structure. This patch fixes the three issues described above. The first is serious because usiing the RTC alarm set to a non minute boundary will eventually cause all component drivers that depend on the interrupt line to fail. The solution adopted is to round up to alarm time to the next highest minute. The second bug, reporting a RTC_PF event instead of an RTC_AF event turns out to not matter with the current implementation of the kernel RTC core as it seems to ignore the event type. However, should that change in the future it is better to fix the issue now and not have 'problems waiting to happen' The third set of changes are to make the da9052_rtc structure available to all the local internal functions in the driver. This was done during testing so that diagnostic data could be stored there. Should the solution to the first issue be found not acceptable, then the alternative of using the TICKS interrupt at the fixed one second interval in order to step to the exact second of the requested alarm requires an extra (alarm time) piece of data to be stored. In devices that use the alarm function to wake up from sleep, accuracy to the second will result in the device being awake for up to nearly a minute longer than expected. Signed-off-by: Anthony Olech <anthony.olech.opensource@diasemi.com> Cc: David Dajun Chen <dchen@diasemi.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-06-06 14:35:54 -07:00
rtc: driver for DA9052/53 PMIC v1 RTC Driver for Dialog Semiconductor DA9052/53 PMICs. This patch is functionally tested on Samsung SMDKV6410. [akpm@linux-foundation.org: clean up file header layout, remove unneeded initialisation of local arrays] Signed-off-by: David Dajun Chen <dchen@diasemi.com> Signed-off-by: Ashish Jangam <ashish.jangam@kpitcummins.com> Cc: Paul Gortmaker <p_gortmaker@yahoo.com> Cc: David Dajun Chen <dchen@diasemi.com> Cc: Samuel Ortiz <sameo@linux.intel.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-03-23 15:02:36 -07:00
drivers/rtc/rtc-da9052.c: ALARM causes interrupt storm Setting the alarm to a time not on a minute boundary results in repeated interrupts being generated by the DA9052/3 PMIC device until the kernel RTC core sees that the alarm has rung. Sometimes the number and frequency of interrupts can cause the kernel to disable the IRQ line used by the DA9052/3 PMIC with disasterous consequences. This patch fixes the problem. Even though the DA9052/3 PMIC is capable generating periodic interrupts, ie TICKS, the method used to distinguish RTC_AF from RTC_PF events was flawed and can not work in conjunction with the regmap_irq kernel core. Thus that flawed detection has also been removed by the DA9052/3 PMIC RTC driver's irq handler, so that it no longer reports the wrong type of event to the kernel RTC core. The internal static functions within the DA9052/3 PMIC RTC driver have been changed to pass the 'da9052_rtc' structure instead of the 'da9052' because there is no backwards pointer from the 'da9052' structure. This patch fixes the three issues described above. The first is serious because usiing the RTC alarm set to a non minute boundary will eventually cause all component drivers that depend on the interrupt line to fail. The solution adopted is to round up to alarm time to the next highest minute. The second bug, reporting a RTC_PF event instead of an RTC_AF event turns out to not matter with the current implementation of the kernel RTC core as it seems to ignore the event type. However, should that change in the future it is better to fix the issue now and not have 'problems waiting to happen' The third set of changes are to make the da9052_rtc structure available to all the local internal functions in the driver. This was done during testing so that diagnostic data could be stored there. Should the solution to the first issue be found not acceptable, then the alternative of using the TICKS interrupt at the fixed one second interval in order to step to the exact second of the requested alarm requires an extra (alarm time) piece of data to be stored. In devices that use the alarm function to wake up from sleep, accuracy to the second will result in the device being awake for up to nearly a minute longer than expected. Signed-off-by: Anthony Olech <anthony.olech.opensource@diasemi.com> Cc: David Dajun Chen <dchen@diasemi.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-06-06 14:35:54 -07:00
rtc: driver for DA9052/53 PMIC v1 RTC Driver for Dialog Semiconductor DA9052/53 PMICs. This patch is functionally tested on Samsung SMDKV6410. [akpm@linux-foundation.org: clean up file header layout, remove unneeded initialisation of local arrays] Signed-off-by: David Dajun Chen <dchen@diasemi.com> Signed-off-by: Ashish Jangam <ashish.jangam@kpitcummins.com> Cc: Paul Gortmaker <p_gortmaker@yahoo.com> Cc: David Dajun Chen <dchen@diasemi.com> Cc: Samuel Ortiz <sameo@linux.intel.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-03-23 15:02:36 -07:00
drivers/rtc/rtc-da9052.c: ALARM causes interrupt storm Setting the alarm to a time not on a minute boundary results in repeated interrupts being generated by the DA9052/3 PMIC device until the kernel RTC core sees that the alarm has rung. Sometimes the number and frequency of interrupts can cause the kernel to disable the IRQ line used by the DA9052/3 PMIC with disasterous consequences. This patch fixes the problem. Even though the DA9052/3 PMIC is capable generating periodic interrupts, ie TICKS, the method used to distinguish RTC_AF from RTC_PF events was flawed and can not work in conjunction with the regmap_irq kernel core. Thus that flawed detection has also been removed by the DA9052/3 PMIC RTC driver's irq handler, so that it no longer reports the wrong type of event to the kernel RTC core. The internal static functions within the DA9052/3 PMIC RTC driver have been changed to pass the 'da9052_rtc' structure instead of the 'da9052' because there is no backwards pointer from the 'da9052' structure. This patch fixes the three issues described above. The first is serious because usiing the RTC alarm set to a non minute boundary will eventually cause all component drivers that depend on the interrupt line to fail. The solution adopted is to round up to alarm time to the next highest minute. The second bug, reporting a RTC_PF event instead of an RTC_AF event turns out to not matter with the current implementation of the kernel RTC core as it seems to ignore the event type. However, should that change in the future it is better to fix the issue now and not have 'problems waiting to happen' The third set of changes are to make the da9052_rtc structure available to all the local internal functions in the driver. This was done during testing so that diagnostic data could be stored there. Should the solution to the first issue be found not acceptable, then the alternative of using the TICKS interrupt at the fixed one second interval in order to step to the exact second of the requested alarm requires an extra (alarm time) piece of data to be stored. In devices that use the alarm function to wake up from sleep, accuracy to the second will result in the device being awake for up to nearly a minute longer than expected. Signed-off-by: Anthony Olech <anthony.olech.opensource@diasemi.com> Cc: David Dajun Chen <dchen@diasemi.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-06-06 14:35:54 -07:00
rtc: driver for DA9052/53 PMIC v1 RTC Driver for Dialog Semiconductor DA9052/53 PMICs. This patch is functionally tested on Samsung SMDKV6410. [akpm@linux-foundation.org: clean up file header layout, remove unneeded initialisation of local arrays] Signed-off-by: David Dajun Chen <dchen@diasemi.com> Signed-off-by: Ashish Jangam <ashish.jangam@kpitcummins.com> Cc: Paul Gortmaker <p_gortmaker@yahoo.com> Cc: David Dajun Chen <dchen@diasemi.com> Cc: Samuel Ortiz <sameo@linux.intel.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-03-23 15:02:36 -07:00
drivers/rtc/rtc-da9052.c: add extra reads with timeouts to avoid returning partially updated values The RTC is in a different clock domain so a quick read after write can retrieve a mangled value of the old/new values Signed-off-by: Adam Ward <adam.ward.opensource@diasemi.com> Tested-by: Adam Ward <adam.ward.opensource@diasemi.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-04-16 12:45:26 -07:00
rtc: driver for DA9052/53 PMIC v1 RTC Driver for Dialog Semiconductor DA9052/53 PMICs. This patch is functionally tested on Samsung SMDKV6410. [akpm@linux-foundation.org: clean up file header layout, remove unneeded initialisation of local arrays] Signed-off-by: David Dajun Chen <dchen@diasemi.com> Signed-off-by: Ashish Jangam <ashish.jangam@kpitcummins.com> Cc: Paul Gortmaker <p_gortmaker@yahoo.com> Cc: David Dajun Chen <dchen@diasemi.com> Cc: Samuel Ortiz <sameo@linux.intel.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-03-23 15:02:36 -07:00
drivers/rtc/rtc-da9052.c: add extra reads with timeouts to avoid returning partially updated values The RTC is in a different clock domain so a quick read after write can retrieve a mangled value of the old/new values Signed-off-by: Adam Ward <adam.ward.opensource@diasemi.com> Tested-by: Adam Ward <adam.ward.opensource@diasemi.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-04-16 12:45:26 -07:00
drivers/rtc/rtc-da9052.c: ALARM causes interrupt storm Setting the alarm to a time not on a minute boundary results in repeated interrupts being generated by the DA9052/3 PMIC device until the kernel RTC core sees that the alarm has rung. Sometimes the number and frequency of interrupts can cause the kernel to disable the IRQ line used by the DA9052/3 PMIC with disasterous consequences. This patch fixes the problem. Even though the DA9052/3 PMIC is capable generating periodic interrupts, ie TICKS, the method used to distinguish RTC_AF from RTC_PF events was flawed and can not work in conjunction with the regmap_irq kernel core. Thus that flawed detection has also been removed by the DA9052/3 PMIC RTC driver's irq handler, so that it no longer reports the wrong type of event to the kernel RTC core. The internal static functions within the DA9052/3 PMIC RTC driver have been changed to pass the 'da9052_rtc' structure instead of the 'da9052' because there is no backwards pointer from the 'da9052' structure. This patch fixes the three issues described above. The first is serious because usiing the RTC alarm set to a non minute boundary will eventually cause all component drivers that depend on the interrupt line to fail. The solution adopted is to round up to alarm time to the next highest minute. The second bug, reporting a RTC_PF event instead of an RTC_AF event turns out to not matter with the current implementation of the kernel RTC core as it seems to ignore the event type. However, should that change in the future it is better to fix the issue now and not have 'problems waiting to happen' The third set of changes are to make the da9052_rtc structure available to all the local internal functions in the driver. This was done during testing so that diagnostic data could be stored there. Should the solution to the first issue be found not acceptable, then the alternative of using the TICKS interrupt at the fixed one second interval in order to step to the exact second of the requested alarm requires an extra (alarm time) piece of data to be stored. In devices that use the alarm function to wake up from sleep, accuracy to the second will result in the device being awake for up to nearly a minute longer than expected. Signed-off-by: Anthony Olech <anthony.olech.opensource@diasemi.com> Cc: David Dajun Chen <dchen@diasemi.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-06-06 14:35:54 -07:00
rtc: driver for DA9052/53 PMIC v1 RTC Driver for Dialog Semiconductor DA9052/53 PMICs. This patch is functionally tested on Samsung SMDKV6410. [akpm@linux-foundation.org: clean up file header layout, remove unneeded initialisation of local arrays] Signed-off-by: David Dajun Chen <dchen@diasemi.com> Signed-off-by: Ashish Jangam <ashish.jangam@kpitcummins.com> Cc: Paul Gortmaker <p_gortmaker@yahoo.com> Cc: David Dajun Chen <dchen@diasemi.com> Cc: Samuel Ortiz <sameo@linux.intel.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-03-23 15:02:36 -07:00
drivers/rtc/rtc-da9052.c: add extra reads with timeouts to avoid returning partially updated values The RTC is in a different clock domain so a quick read after write can retrieve a mangled value of the old/new values Signed-off-by: Adam Ward <adam.ward.opensource@diasemi.com> Tested-by: Adam Ward <adam.ward.opensource@diasemi.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-04-16 12:45:26 -07:00
rtc: driver for DA9052/53 PMIC v1 RTC Driver for Dialog Semiconductor DA9052/53 PMICs. This patch is functionally tested on Samsung SMDKV6410. [akpm@linux-foundation.org: clean up file header layout, remove unneeded initialisation of local arrays] Signed-off-by: David Dajun Chen <dchen@diasemi.com> Signed-off-by: Ashish Jangam <ashish.jangam@kpitcummins.com> Cc: Paul Gortmaker <p_gortmaker@yahoo.com> Cc: David Dajun Chen <dchen@diasemi.com> Cc: Samuel Ortiz <sameo@linux.intel.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-03-23 15:02:36 -07:00
drivers/rtc/rtc-da9052.c: add extra reads with timeouts to avoid returning partially updated values The RTC is in a different clock domain so a quick read after write can retrieve a mangled value of the old/new values Signed-off-by: Adam Ward <adam.ward.opensource@diasemi.com> Tested-by: Adam Ward <adam.ward.opensource@diasemi.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-04-16 12:45:26 -07:00
rtc: driver for DA9052/53 PMIC v1 RTC Driver for Dialog Semiconductor DA9052/53 PMICs. This patch is functionally tested on Samsung SMDKV6410. [akpm@linux-foundation.org: clean up file header layout, remove unneeded initialisation of local arrays] Signed-off-by: David Dajun Chen <dchen@diasemi.com> Signed-off-by: Ashish Jangam <ashish.jangam@kpitcummins.com> Cc: Paul Gortmaker <p_gortmaker@yahoo.com> Cc: David Dajun Chen <dchen@diasemi.com> Cc: Samuel Ortiz <sameo@linux.intel.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-03-23 15:02:36 -07:00
drivers/rtc/rtc-da9052.c: ALARM causes interrupt storm Setting the alarm to a time not on a minute boundary results in repeated interrupts being generated by the DA9052/3 PMIC device until the kernel RTC core sees that the alarm has rung. Sometimes the number and frequency of interrupts can cause the kernel to disable the IRQ line used by the DA9052/3 PMIC with disasterous consequences. This patch fixes the problem. Even though the DA9052/3 PMIC is capable generating periodic interrupts, ie TICKS, the method used to distinguish RTC_AF from RTC_PF events was flawed and can not work in conjunction with the regmap_irq kernel core. Thus that flawed detection has also been removed by the DA9052/3 PMIC RTC driver's irq handler, so that it no longer reports the wrong type of event to the kernel RTC core. The internal static functions within the DA9052/3 PMIC RTC driver have been changed to pass the 'da9052_rtc' structure instead of the 'da9052' because there is no backwards pointer from the 'da9052' structure. This patch fixes the three issues described above. The first is serious because usiing the RTC alarm set to a non minute boundary will eventually cause all component drivers that depend on the interrupt line to fail. The solution adopted is to round up to alarm time to the next highest minute. The second bug, reporting a RTC_PF event instead of an RTC_AF event turns out to not matter with the current implementation of the kernel RTC core as it seems to ignore the event type. However, should that change in the future it is better to fix the issue now and not have 'problems waiting to happen' The third set of changes are to make the da9052_rtc structure available to all the local internal functions in the driver. This was done during testing so that diagnostic data could be stored there. Should the solution to the first issue be found not acceptable, then the alternative of using the TICKS interrupt at the fixed one second interval in order to step to the exact second of the requested alarm requires an extra (alarm time) piece of data to be stored. In devices that use the alarm function to wake up from sleep, accuracy to the second will result in the device being awake for up to nearly a minute longer than expected. Signed-off-by: Anthony Olech <anthony.olech.opensource@diasemi.com> Cc: David Dajun Chen <dchen@diasemi.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-06-06 14:35:54 -07:00
rtc: driver for DA9052/53 PMIC v1 RTC Driver for Dialog Semiconductor DA9052/53 PMICs. This patch is functionally tested on Samsung SMDKV6410. [akpm@linux-foundation.org: clean up file header layout, remove unneeded initialisation of local arrays] Signed-off-by: David Dajun Chen <dchen@diasemi.com> Signed-off-by: Ashish Jangam <ashish.jangam@kpitcummins.com> Cc: Paul Gortmaker <p_gortmaker@yahoo.com> Cc: David Dajun Chen <dchen@diasemi.com> Cc: Samuel Ortiz <sameo@linux.intel.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-03-23 15:02:36 -07:00
drivers/rtc/rtc-da9052.c: ALARM causes interrupt storm Setting the alarm to a time not on a minute boundary results in repeated interrupts being generated by the DA9052/3 PMIC device until the kernel RTC core sees that the alarm has rung. Sometimes the number and frequency of interrupts can cause the kernel to disable the IRQ line used by the DA9052/3 PMIC with disasterous consequences. This patch fixes the problem. Even though the DA9052/3 PMIC is capable generating periodic interrupts, ie TICKS, the method used to distinguish RTC_AF from RTC_PF events was flawed and can not work in conjunction with the regmap_irq kernel core. Thus that flawed detection has also been removed by the DA9052/3 PMIC RTC driver's irq handler, so that it no longer reports the wrong type of event to the kernel RTC core. The internal static functions within the DA9052/3 PMIC RTC driver have been changed to pass the 'da9052_rtc' structure instead of the 'da9052' because there is no backwards pointer from the 'da9052' structure. This patch fixes the three issues described above. The first is serious because usiing the RTC alarm set to a non minute boundary will eventually cause all component drivers that depend on the interrupt line to fail. The solution adopted is to round up to alarm time to the next highest minute. The second bug, reporting a RTC_PF event instead of an RTC_AF event turns out to not matter with the current implementation of the kernel RTC core as it seems to ignore the event type. However, should that change in the future it is better to fix the issue now and not have 'problems waiting to happen' The third set of changes are to make the da9052_rtc structure available to all the local internal functions in the driver. This was done during testing so that diagnostic data could be stored there. Should the solution to the first issue be found not acceptable, then the alternative of using the TICKS interrupt at the fixed one second interval in order to step to the exact second of the requested alarm requires an extra (alarm time) piece of data to be stored. In devices that use the alarm function to wake up from sleep, accuracy to the second will result in the device being awake for up to nearly a minute longer than expected. Signed-off-by: Anthony Olech <anthony.olech.opensource@diasemi.com> Cc: David Dajun Chen <dchen@diasemi.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-06-06 14:35:54 -07:00
rtc: driver for DA9052/53 PMIC v1 RTC Driver for Dialog Semiconductor DA9052/53 PMICs. This patch is functionally tested on Samsung SMDKV6410. [akpm@linux-foundation.org: clean up file header layout, remove unneeded initialisation of local arrays] Signed-off-by: David Dajun Chen <dchen@diasemi.com> Signed-off-by: Ashish Jangam <ashish.jangam@kpitcummins.com> Cc: Paul Gortmaker <p_gortmaker@yahoo.com> Cc: David Dajun Chen <dchen@diasemi.com> Cc: Samuel Ortiz <sameo@linux.intel.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-03-23 15:02:36 -07:00
drivers/rtc/rtc-da9052.c: ALARM causes interrupt storm Setting the alarm to a time not on a minute boundary results in repeated interrupts being generated by the DA9052/3 PMIC device until the kernel RTC core sees that the alarm has rung. Sometimes the number and frequency of interrupts can cause the kernel to disable the IRQ line used by the DA9052/3 PMIC with disasterous consequences. This patch fixes the problem. Even though the DA9052/3 PMIC is capable generating periodic interrupts, ie TICKS, the method used to distinguish RTC_AF from RTC_PF events was flawed and can not work in conjunction with the regmap_irq kernel core. Thus that flawed detection has also been removed by the DA9052/3 PMIC RTC driver's irq handler, so that it no longer reports the wrong type of event to the kernel RTC core. The internal static functions within the DA9052/3 PMIC RTC driver have been changed to pass the 'da9052_rtc' structure instead of the 'da9052' because there is no backwards pointer from the 'da9052' structure. This patch fixes the three issues described above. The first is serious because usiing the RTC alarm set to a non minute boundary will eventually cause all component drivers that depend on the interrupt line to fail. The solution adopted is to round up to alarm time to the next highest minute. The second bug, reporting a RTC_PF event instead of an RTC_AF event turns out to not matter with the current implementation of the kernel RTC core as it seems to ignore the event type. However, should that change in the future it is better to fix the issue now and not have 'problems waiting to happen' The third set of changes are to make the da9052_rtc structure available to all the local internal functions in the driver. This was done during testing so that diagnostic data could be stored there. Should the solution to the first issue be found not acceptable, then the alternative of using the TICKS interrupt at the fixed one second interval in order to step to the exact second of the requested alarm requires an extra (alarm time) piece of data to be stored. In devices that use the alarm function to wake up from sleep, accuracy to the second will result in the device being awake for up to nearly a minute longer than expected. Signed-off-by: Anthony Olech <anthony.olech.opensource@diasemi.com> Cc: David Dajun Chen <dchen@diasemi.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-06-06 14:35:54 -07:00
rtc: driver for DA9052/53 PMIC v1 RTC Driver for Dialog Semiconductor DA9052/53 PMICs. This patch is functionally tested on Samsung SMDKV6410. [akpm@linux-foundation.org: clean up file header layout, remove unneeded initialisation of local arrays] Signed-off-by: David Dajun Chen <dchen@diasemi.com> Signed-off-by: Ashish Jangam <ashish.jangam@kpitcummins.com> Cc: Paul Gortmaker <p_gortmaker@yahoo.com> Cc: David Dajun Chen <dchen@diasemi.com> Cc: Samuel Ortiz <sameo@linux.intel.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-03-23 15:02:36 -07:00
drivers/rtc/rtc-da9052.c: ALARM causes interrupt storm Setting the alarm to a time not on a minute boundary results in repeated interrupts being generated by the DA9052/3 PMIC device until the kernel RTC core sees that the alarm has rung. Sometimes the number and frequency of interrupts can cause the kernel to disable the IRQ line used by the DA9052/3 PMIC with disasterous consequences. This patch fixes the problem. Even though the DA9052/3 PMIC is capable generating periodic interrupts, ie TICKS, the method used to distinguish RTC_AF from RTC_PF events was flawed and can not work in conjunction with the regmap_irq kernel core. Thus that flawed detection has also been removed by the DA9052/3 PMIC RTC driver's irq handler, so that it no longer reports the wrong type of event to the kernel RTC core. The internal static functions within the DA9052/3 PMIC RTC driver have been changed to pass the 'da9052_rtc' structure instead of the 'da9052' because there is no backwards pointer from the 'da9052' structure. This patch fixes the three issues described above. The first is serious because usiing the RTC alarm set to a non minute boundary will eventually cause all component drivers that depend on the interrupt line to fail. The solution adopted is to round up to alarm time to the next highest minute. The second bug, reporting a RTC_PF event instead of an RTC_AF event turns out to not matter with the current implementation of the kernel RTC core as it seems to ignore the event type. However, should that change in the future it is better to fix the issue now and not have 'problems waiting to happen' The third set of changes are to make the da9052_rtc structure available to all the local internal functions in the driver. This was done during testing so that diagnostic data could be stored there. Should the solution to the first issue be found not acceptable, then the alternative of using the TICKS interrupt at the fixed one second interval in order to step to the exact second of the requested alarm requires an extra (alarm time) piece of data to be stored. In devices that use the alarm function to wake up from sleep, accuracy to the second will result in the device being awake for up to nearly a minute longer than expected. Signed-off-by: Anthony Olech <anthony.olech.opensource@diasemi.com> Cc: David Dajun Chen <dchen@diasemi.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-06-06 14:35:54 -07:00
rtc: driver for DA9052/53 PMIC v1 RTC Driver for Dialog Semiconductor DA9052/53 PMICs. This patch is functionally tested on Samsung SMDKV6410. [akpm@linux-foundation.org: clean up file header layout, remove unneeded initialisation of local arrays] Signed-off-by: David Dajun Chen <dchen@diasemi.com> Signed-off-by: Ashish Jangam <ashish.jangam@kpitcummins.com> Cc: Paul Gortmaker <p_gortmaker@yahoo.com> Cc: David Dajun Chen <dchen@diasemi.com> Cc: Samuel Ortiz <sameo@linux.intel.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-03-23 15:02:36 -07:00
drivers/rtc/rtc-da9052.c: ALARM causes interrupt storm Setting the alarm to a time not on a minute boundary results in repeated interrupts being generated by the DA9052/3 PMIC device until the kernel RTC core sees that the alarm has rung. Sometimes the number and frequency of interrupts can cause the kernel to disable the IRQ line used by the DA9052/3 PMIC with disasterous consequences. This patch fixes the problem. Even though the DA9052/3 PMIC is capable generating periodic interrupts, ie TICKS, the method used to distinguish RTC_AF from RTC_PF events was flawed and can not work in conjunction with the regmap_irq kernel core. Thus that flawed detection has also been removed by the DA9052/3 PMIC RTC driver's irq handler, so that it no longer reports the wrong type of event to the kernel RTC core. The internal static functions within the DA9052/3 PMIC RTC driver have been changed to pass the 'da9052_rtc' structure instead of the 'da9052' because there is no backwards pointer from the 'da9052' structure. This patch fixes the three issues described above. The first is serious because usiing the RTC alarm set to a non minute boundary will eventually cause all component drivers that depend on the interrupt line to fail. The solution adopted is to round up to alarm time to the next highest minute. The second bug, reporting a RTC_PF event instead of an RTC_AF event turns out to not matter with the current implementation of the kernel RTC core as it seems to ignore the event type. However, should that change in the future it is better to fix the issue now and not have 'problems waiting to happen' The third set of changes are to make the da9052_rtc structure available to all the local internal functions in the driver. This was done during testing so that diagnostic data could be stored there. Should the solution to the first issue be found not acceptable, then the alternative of using the TICKS interrupt at the fixed one second interval in order to step to the exact second of the requested alarm requires an extra (alarm time) piece of data to be stored. In devices that use the alarm function to wake up from sleep, accuracy to the second will result in the device being awake for up to nearly a minute longer than expected. Signed-off-by: Anthony Olech <anthony.olech.opensource@diasemi.com> Cc: David Dajun Chen <dchen@diasemi.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-06-06 14:35:54 -07:00
rtc: driver for DA9052/53 PMIC v1 RTC Driver for Dialog Semiconductor DA9052/53 PMICs. This patch is functionally tested on Samsung SMDKV6410. [akpm@linux-foundation.org: clean up file header layout, remove unneeded initialisation of local arrays] Signed-off-by: David Dajun Chen <dchen@diasemi.com> Signed-off-by: Ashish Jangam <ashish.jangam@kpitcummins.com> Cc: Paul Gortmaker <p_gortmaker@yahoo.com> Cc: David Dajun Chen <dchen@diasemi.com> Cc: Samuel Ortiz <sameo@linux.intel.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-03-23 15:02:36 -07:00
drivers/rtc/rtc-da9052.c: ALARM causes interrupt storm Setting the alarm to a time not on a minute boundary results in repeated interrupts being generated by the DA9052/3 PMIC device until the kernel RTC core sees that the alarm has rung. Sometimes the number and frequency of interrupts can cause the kernel to disable the IRQ line used by the DA9052/3 PMIC with disasterous consequences. This patch fixes the problem. Even though the DA9052/3 PMIC is capable generating periodic interrupts, ie TICKS, the method used to distinguish RTC_AF from RTC_PF events was flawed and can not work in conjunction with the regmap_irq kernel core. Thus that flawed detection has also been removed by the DA9052/3 PMIC RTC driver's irq handler, so that it no longer reports the wrong type of event to the kernel RTC core. The internal static functions within the DA9052/3 PMIC RTC driver have been changed to pass the 'da9052_rtc' structure instead of the 'da9052' because there is no backwards pointer from the 'da9052' structure. This patch fixes the three issues described above. The first is serious because usiing the RTC alarm set to a non minute boundary will eventually cause all component drivers that depend on the interrupt line to fail. The solution adopted is to round up to alarm time to the next highest minute. The second bug, reporting a RTC_PF event instead of an RTC_AF event turns out to not matter with the current implementation of the kernel RTC core as it seems to ignore the event type. However, should that change in the future it is better to fix the issue now and not have 'problems waiting to happen' The third set of changes are to make the da9052_rtc structure available to all the local internal functions in the driver. This was done during testing so that diagnostic data could be stored there. Should the solution to the first issue be found not acceptable, then the alternative of using the TICKS interrupt at the fixed one second interval in order to step to the exact second of the requested alarm requires an extra (alarm time) piece of data to be stored. In devices that use the alarm function to wake up from sleep, accuracy to the second will result in the device being awake for up to nearly a minute longer than expected. Signed-off-by: Anthony Olech <anthony.olech.opensource@diasemi.com> Cc: David Dajun Chen <dchen@diasemi.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-06-06 14:35:54 -07:00
rtc: driver for DA9052/53 PMIC v1 RTC Driver for Dialog Semiconductor DA9052/53 PMICs. This patch is functionally tested on Samsung SMDKV6410. [akpm@linux-foundation.org: clean up file header layout, remove unneeded initialisation of local arrays] Signed-off-by: David Dajun Chen <dchen@diasemi.com> Signed-off-by: Ashish Jangam <ashish.jangam@kpitcummins.com> Cc: Paul Gortmaker <p_gortmaker@yahoo.com> Cc: David Dajun Chen <dchen@diasemi.com> Cc: Samuel Ortiz <sameo@linux.intel.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-03-23 15:02:36 -07:00
drivers/rtc/rtc-da9052.c: ALARM causes interrupt storm Setting the alarm to a time not on a minute boundary results in repeated interrupts being generated by the DA9052/3 PMIC device until the kernel RTC core sees that the alarm has rung. Sometimes the number and frequency of interrupts can cause the kernel to disable the IRQ line used by the DA9052/3 PMIC with disasterous consequences. This patch fixes the problem. Even though the DA9052/3 PMIC is capable generating periodic interrupts, ie TICKS, the method used to distinguish RTC_AF from RTC_PF events was flawed and can not work in conjunction with the regmap_irq kernel core. Thus that flawed detection has also been removed by the DA9052/3 PMIC RTC driver's irq handler, so that it no longer reports the wrong type of event to the kernel RTC core. The internal static functions within the DA9052/3 PMIC RTC driver have been changed to pass the 'da9052_rtc' structure instead of the 'da9052' because there is no backwards pointer from the 'da9052' structure. This patch fixes the three issues described above. The first is serious because usiing the RTC alarm set to a non minute boundary will eventually cause all component drivers that depend on the interrupt line to fail. The solution adopted is to round up to alarm time to the next highest minute. The second bug, reporting a RTC_PF event instead of an RTC_AF event turns out to not matter with the current implementation of the kernel RTC core as it seems to ignore the event type. However, should that change in the future it is better to fix the issue now and not have 'problems waiting to happen' The third set of changes are to make the da9052_rtc structure available to all the local internal functions in the driver. This was done during testing so that diagnostic data could be stored there. Should the solution to the first issue be found not acceptable, then the alternative of using the TICKS interrupt at the fixed one second interval in order to step to the exact second of the requested alarm requires an extra (alarm time) piece of data to be stored. In devices that use the alarm function to wake up from sleep, accuracy to the second will result in the device being awake for up to nearly a minute longer than expected. Signed-off-by: Anthony Olech <anthony.olech.opensource@diasemi.com> Cc: David Dajun Chen <dchen@diasemi.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-06-06 14:35:54 -07:00
rtc: driver for DA9052/53 PMIC v1 RTC Driver for Dialog Semiconductor DA9052/53 PMICs. This patch is functionally tested on Samsung SMDKV6410. [akpm@linux-foundation.org: clean up file header layout, remove unneeded initialisation of local arrays] Signed-off-by: David Dajun Chen <dchen@diasemi.com> Signed-off-by: Ashish Jangam <ashish.jangam@kpitcummins.com> Cc: Paul Gortmaker <p_gortmaker@yahoo.com> Cc: David Dajun Chen <dchen@diasemi.com> Cc: Samuel Ortiz <sameo@linux.intel.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-03-23 15:02:36 -07:00
drivers/rtc/rtc-da9052.c: ALARM causes interrupt storm Setting the alarm to a time not on a minute boundary results in repeated interrupts being generated by the DA9052/3 PMIC device until the kernel RTC core sees that the alarm has rung. Sometimes the number and frequency of interrupts can cause the kernel to disable the IRQ line used by the DA9052/3 PMIC with disasterous consequences. This patch fixes the problem. Even though the DA9052/3 PMIC is capable generating periodic interrupts, ie TICKS, the method used to distinguish RTC_AF from RTC_PF events was flawed and can not work in conjunction with the regmap_irq kernel core. Thus that flawed detection has also been removed by the DA9052/3 PMIC RTC driver's irq handler, so that it no longer reports the wrong type of event to the kernel RTC core. The internal static functions within the DA9052/3 PMIC RTC driver have been changed to pass the 'da9052_rtc' structure instead of the 'da9052' because there is no backwards pointer from the 'da9052' structure. This patch fixes the three issues described above. The first is serious because usiing the RTC alarm set to a non minute boundary will eventually cause all component drivers that depend on the interrupt line to fail. The solution adopted is to round up to alarm time to the next highest minute. The second bug, reporting a RTC_PF event instead of an RTC_AF event turns out to not matter with the current implementation of the kernel RTC core as it seems to ignore the event type. However, should that change in the future it is better to fix the issue now and not have 'problems waiting to happen' The third set of changes are to make the da9052_rtc structure available to all the local internal functions in the driver. This was done during testing so that diagnostic data could be stored there. Should the solution to the first issue be found not acceptable, then the alternative of using the TICKS interrupt at the fixed one second interval in order to step to the exact second of the requested alarm requires an extra (alarm time) piece of data to be stored. In devices that use the alarm function to wake up from sleep, accuracy to the second will result in the device being awake for up to nearly a minute longer than expected. Signed-off-by: Anthony Olech <anthony.olech.opensource@diasemi.com> Cc: David Dajun Chen <dchen@diasemi.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-06-06 14:35:54 -07:00
rtc: driver for DA9052/53 PMIC v1 RTC Driver for Dialog Semiconductor DA9052/53 PMICs. This patch is functionally tested on Samsung SMDKV6410. [akpm@linux-foundation.org: clean up file header layout, remove unneeded initialisation of local arrays] Signed-off-by: David Dajun Chen <dchen@diasemi.com> Signed-off-by: Ashish Jangam <ashish.jangam@kpitcummins.com> Cc: Paul Gortmaker <p_gortmaker@yahoo.com> Cc: David Dajun Chen <dchen@diasemi.com> Cc: Samuel Ortiz <sameo@linux.intel.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-03-23 15:02:36 -07:00
drivers/rtc/rtc-da9052.c: ALARM causes interrupt storm Setting the alarm to a time not on a minute boundary results in repeated interrupts being generated by the DA9052/3 PMIC device until the kernel RTC core sees that the alarm has rung. Sometimes the number and frequency of interrupts can cause the kernel to disable the IRQ line used by the DA9052/3 PMIC with disasterous consequences. This patch fixes the problem. Even though the DA9052/3 PMIC is capable generating periodic interrupts, ie TICKS, the method used to distinguish RTC_AF from RTC_PF events was flawed and can not work in conjunction with the regmap_irq kernel core. Thus that flawed detection has also been removed by the DA9052/3 PMIC RTC driver's irq handler, so that it no longer reports the wrong type of event to the kernel RTC core. The internal static functions within the DA9052/3 PMIC RTC driver have been changed to pass the 'da9052_rtc' structure instead of the 'da9052' because there is no backwards pointer from the 'da9052' structure. This patch fixes the three issues described above. The first is serious because usiing the RTC alarm set to a non minute boundary will eventually cause all component drivers that depend on the interrupt line to fail. The solution adopted is to round up to alarm time to the next highest minute. The second bug, reporting a RTC_PF event instead of an RTC_AF event turns out to not matter with the current implementation of the kernel RTC core as it seems to ignore the event type. However, should that change in the future it is better to fix the issue now and not have 'problems waiting to happen' The third set of changes are to make the da9052_rtc structure available to all the local internal functions in the driver. This was done during testing so that diagnostic data could be stored there. Should the solution to the first issue be found not acceptable, then the alternative of using the TICKS interrupt at the fixed one second interval in order to step to the exact second of the requested alarm requires an extra (alarm time) piece of data to be stored. In devices that use the alarm function to wake up from sleep, accuracy to the second will result in the device being awake for up to nearly a minute longer than expected. Signed-off-by: Anthony Olech <anthony.olech.opensource@diasemi.com> Cc: David Dajun Chen <dchen@diasemi.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-06-06 14:35:54 -07:00
rtc: driver for DA9052/53 PMIC v1 RTC Driver for Dialog Semiconductor DA9052/53 PMICs. This patch is functionally tested on Samsung SMDKV6410. [akpm@linux-foundation.org: clean up file header layout, remove unneeded initialisation of local arrays] Signed-off-by: David Dajun Chen <dchen@diasemi.com> Signed-off-by: Ashish Jangam <ashish.jangam@kpitcummins.com> Cc: Paul Gortmaker <p_gortmaker@yahoo.com> Cc: David Dajun Chen <dchen@diasemi.com> Cc: Samuel Ortiz <sameo@linux.intel.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-03-23 15:02:36 -07:00
drivers/rtc/rtc-da9052.c: add extra reads with timeouts to avoid returning partially updated values The RTC is in a different clock domain so a quick read after write can retrieve a mangled value of the old/new values Signed-off-by: Adam Ward <adam.ward.opensource@diasemi.com> Tested-by: Adam Ward <adam.ward.opensource@diasemi.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-04-16 12:45:26 -07:00
rtc: driver for DA9052/53 PMIC v1 RTC Driver for Dialog Semiconductor DA9052/53 PMICs. This patch is functionally tested on Samsung SMDKV6410. [akpm@linux-foundation.org: clean up file header layout, remove unneeded initialisation of local arrays] Signed-off-by: David Dajun Chen <dchen@diasemi.com> Signed-off-by: Ashish Jangam <ashish.jangam@kpitcummins.com> Cc: Paul Gortmaker <p_gortmaker@yahoo.com> Cc: David Dajun Chen <dchen@diasemi.com> Cc: Samuel Ortiz <sameo@linux.intel.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-03-23 15:02:36 -07:00
drivers/rtc/rtc-da9052.c: add extra reads with timeouts to avoid returning partially updated values The RTC is in a different clock domain so a quick read after write can retrieve a mangled value of the old/new values Signed-off-by: Adam Ward <adam.ward.opensource@diasemi.com> Tested-by: Adam Ward <adam.ward.opensource@diasemi.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-04-16 12:45:26 -07:00
drivers/rtc/rtc-da9052.c: ALARM causes interrupt storm Setting the alarm to a time not on a minute boundary results in repeated interrupts being generated by the DA9052/3 PMIC device until the kernel RTC core sees that the alarm has rung. Sometimes the number and frequency of interrupts can cause the kernel to disable the IRQ line used by the DA9052/3 PMIC with disasterous consequences. This patch fixes the problem. Even though the DA9052/3 PMIC is capable generating periodic interrupts, ie TICKS, the method used to distinguish RTC_AF from RTC_PF events was flawed and can not work in conjunction with the regmap_irq kernel core. Thus that flawed detection has also been removed by the DA9052/3 PMIC RTC driver's irq handler, so that it no longer reports the wrong type of event to the kernel RTC core. The internal static functions within the DA9052/3 PMIC RTC driver have been changed to pass the 'da9052_rtc' structure instead of the 'da9052' because there is no backwards pointer from the 'da9052' structure. This patch fixes the three issues described above. The first is serious because usiing the RTC alarm set to a non minute boundary will eventually cause all component drivers that depend on the interrupt line to fail. The solution adopted is to round up to alarm time to the next highest minute. The second bug, reporting a RTC_PF event instead of an RTC_AF event turns out to not matter with the current implementation of the kernel RTC core as it seems to ignore the event type. However, should that change in the future it is better to fix the issue now and not have 'problems waiting to happen' The third set of changes are to make the da9052_rtc structure available to all the local internal functions in the driver. This was done during testing so that diagnostic data could be stored there. Should the solution to the first issue be found not acceptable, then the alternative of using the TICKS interrupt at the fixed one second interval in order to step to the exact second of the requested alarm requires an extra (alarm time) piece of data to be stored. In devices that use the alarm function to wake up from sleep, accuracy to the second will result in the device being awake for up to nearly a minute longer than expected. Signed-off-by: Anthony Olech <anthony.olech.opensource@diasemi.com> Cc: David Dajun Chen <dchen@diasemi.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-06-06 14:35:54 -07:00
rtc: driver for DA9052/53 PMIC v1 RTC Driver for Dialog Semiconductor DA9052/53 PMICs. This patch is functionally tested on Samsung SMDKV6410. [akpm@linux-foundation.org: clean up file header layout, remove unneeded initialisation of local arrays] Signed-off-by: David Dajun Chen <dchen@diasemi.com> Signed-off-by: Ashish Jangam <ashish.jangam@kpitcummins.com> Cc: Paul Gortmaker <p_gortmaker@yahoo.com> Cc: David Dajun Chen <dchen@diasemi.com> Cc: Samuel Ortiz <sameo@linux.intel.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-03-23 15:02:36 -07:00
drivers/rtc/rtc-da9052.c: add extra reads with timeouts to avoid returning partially updated values The RTC is in a different clock domain so a quick read after write can retrieve a mangled value of the old/new values Signed-off-by: Adam Ward <adam.ward.opensource@diasemi.com> Tested-by: Adam Ward <adam.ward.opensource@diasemi.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-04-16 12:45:26 -07:00
rtc: driver for DA9052/53 PMIC v1 RTC Driver for Dialog Semiconductor DA9052/53 PMICs. This patch is functionally tested on Samsung SMDKV6410. [akpm@linux-foundation.org: clean up file header layout, remove unneeded initialisation of local arrays] Signed-off-by: David Dajun Chen <dchen@diasemi.com> Signed-off-by: Ashish Jangam <ashish.jangam@kpitcummins.com> Cc: Paul Gortmaker <p_gortmaker@yahoo.com> Cc: David Dajun Chen <dchen@diasemi.com> Cc: Samuel Ortiz <sameo@linux.intel.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-03-23 15:02:36 -07:00
drivers/rtc/rtc-da9052.c: add extra reads with timeouts to avoid returning partially updated values The RTC is in a different clock domain so a quick read after write can retrieve a mangled value of the old/new values Signed-off-by: Adam Ward <adam.ward.opensource@diasemi.com> Tested-by: Adam Ward <adam.ward.opensource@diasemi.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-04-16 12:45:26 -07:00
rtc: driver for DA9052/53 PMIC v1 RTC Driver for Dialog Semiconductor DA9052/53 PMICs. This patch is functionally tested on Samsung SMDKV6410. [akpm@linux-foundation.org: clean up file header layout, remove unneeded initialisation of local arrays] Signed-off-by: David Dajun Chen <dchen@diasemi.com> Signed-off-by: Ashish Jangam <ashish.jangam@kpitcummins.com> Cc: Paul Gortmaker <p_gortmaker@yahoo.com> Cc: David Dajun Chen <dchen@diasemi.com> Cc: Samuel Ortiz <sameo@linux.intel.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-03-23 15:02:36 -07:00
drivers/rtc/rtc-da9052.c: ALARM causes interrupt storm Setting the alarm to a time not on a minute boundary results in repeated interrupts being generated by the DA9052/3 PMIC device until the kernel RTC core sees that the alarm has rung. Sometimes the number and frequency of interrupts can cause the kernel to disable the IRQ line used by the DA9052/3 PMIC with disasterous consequences. This patch fixes the problem. Even though the DA9052/3 PMIC is capable generating periodic interrupts, ie TICKS, the method used to distinguish RTC_AF from RTC_PF events was flawed and can not work in conjunction with the regmap_irq kernel core. Thus that flawed detection has also been removed by the DA9052/3 PMIC RTC driver's irq handler, so that it no longer reports the wrong type of event to the kernel RTC core. The internal static functions within the DA9052/3 PMIC RTC driver have been changed to pass the 'da9052_rtc' structure instead of the 'da9052' because there is no backwards pointer from the 'da9052' structure. This patch fixes the three issues described above. The first is serious because usiing the RTC alarm set to a non minute boundary will eventually cause all component drivers that depend on the interrupt line to fail. The solution adopted is to round up to alarm time to the next highest minute. The second bug, reporting a RTC_PF event instead of an RTC_AF event turns out to not matter with the current implementation of the kernel RTC core as it seems to ignore the event type. However, should that change in the future it is better to fix the issue now and not have 'problems waiting to happen' The third set of changes are to make the da9052_rtc structure available to all the local internal functions in the driver. This was done during testing so that diagnostic data could be stored there. Should the solution to the first issue be found not acceptable, then the alternative of using the TICKS interrupt at the fixed one second interval in order to step to the exact second of the requested alarm requires an extra (alarm time) piece of data to be stored. In devices that use the alarm function to wake up from sleep, accuracy to the second will result in the device being awake for up to nearly a minute longer than expected. Signed-off-by: Anthony Olech <anthony.olech.opensource@diasemi.com> Cc: David Dajun Chen <dchen@diasemi.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-06-06 14:35:54 -07:00
rtc: driver for DA9052/53 PMIC v1 RTC Driver for Dialog Semiconductor DA9052/53 PMICs. This patch is functionally tested on Samsung SMDKV6410. [akpm@linux-foundation.org: clean up file header layout, remove unneeded initialisation of local arrays] Signed-off-by: David Dajun Chen <dchen@diasemi.com> Signed-off-by: Ashish Jangam <ashish.jangam@kpitcummins.com> Cc: Paul Gortmaker <p_gortmaker@yahoo.com> Cc: David Dajun Chen <dchen@diasemi.com> Cc: Samuel Ortiz <sameo@linux.intel.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-03-23 15:02:36 -07:00
drivers/rtc/rtc-da9052.c: add constraints to set valid year Signed-off-by: Adam Ward <adam.ward.opensource@diasemi.com> Tested-by: Adam Ward <adam.ward.opensource@diasemi.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-04-16 12:45:29 -07:00
rtc: driver for DA9052/53 PMIC v1 RTC Driver for Dialog Semiconductor DA9052/53 PMICs. This patch is functionally tested on Samsung SMDKV6410. [akpm@linux-foundation.org: clean up file header layout, remove unneeded initialisation of local arrays] Signed-off-by: David Dajun Chen <dchen@diasemi.com> Signed-off-by: Ashish Jangam <ashish.jangam@kpitcummins.com> Cc: Paul Gortmaker <p_gortmaker@yahoo.com> Cc: David Dajun Chen <dchen@diasemi.com> Cc: Samuel Ortiz <sameo@linux.intel.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-03-23 15:02:36 -07:00
drivers/rtc/rtc-da9052.c: ALARM causes interrupt storm Setting the alarm to a time not on a minute boundary results in repeated interrupts being generated by the DA9052/3 PMIC device until the kernel RTC core sees that the alarm has rung. Sometimes the number and frequency of interrupts can cause the kernel to disable the IRQ line used by the DA9052/3 PMIC with disasterous consequences. This patch fixes the problem. Even though the DA9052/3 PMIC is capable generating periodic interrupts, ie TICKS, the method used to distinguish RTC_AF from RTC_PF events was flawed and can not work in conjunction with the regmap_irq kernel core. Thus that flawed detection has also been removed by the DA9052/3 PMIC RTC driver's irq handler, so that it no longer reports the wrong type of event to the kernel RTC core. The internal static functions within the DA9052/3 PMIC RTC driver have been changed to pass the 'da9052_rtc' structure instead of the 'da9052' because there is no backwards pointer from the 'da9052' structure. This patch fixes the three issues described above. The first is serious because usiing the RTC alarm set to a non minute boundary will eventually cause all component drivers that depend on the interrupt line to fail. The solution adopted is to round up to alarm time to the next highest minute. The second bug, reporting a RTC_PF event instead of an RTC_AF event turns out to not matter with the current implementation of the kernel RTC core as it seems to ignore the event type. However, should that change in the future it is better to fix the issue now and not have 'problems waiting to happen' The third set of changes are to make the da9052_rtc structure available to all the local internal functions in the driver. This was done during testing so that diagnostic data could be stored there. Should the solution to the first issue be found not acceptable, then the alternative of using the TICKS interrupt at the fixed one second interval in order to step to the exact second of the requested alarm requires an extra (alarm time) piece of data to be stored. In devices that use the alarm function to wake up from sleep, accuracy to the second will result in the device being awake for up to nearly a minute longer than expected. Signed-off-by: Anthony Olech <anthony.olech.opensource@diasemi.com> Cc: David Dajun Chen <dchen@diasemi.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-06-06 14:35:54 -07:00
rtc: driver for DA9052/53 PMIC v1 RTC Driver for Dialog Semiconductor DA9052/53 PMICs. This patch is functionally tested on Samsung SMDKV6410. [akpm@linux-foundation.org: clean up file header layout, remove unneeded initialisation of local arrays] Signed-off-by: David Dajun Chen <dchen@diasemi.com> Signed-off-by: Ashish Jangam <ashish.jangam@kpitcummins.com> Cc: Paul Gortmaker <p_gortmaker@yahoo.com> Cc: David Dajun Chen <dchen@diasemi.com> Cc: Samuel Ortiz <sameo@linux.intel.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-03-23 15:02:36 -07:00
drivers/rtc/rtc-da9052.c: ALARM causes interrupt storm Setting the alarm to a time not on a minute boundary results in repeated interrupts being generated by the DA9052/3 PMIC device until the kernel RTC core sees that the alarm has rung. Sometimes the number and frequency of interrupts can cause the kernel to disable the IRQ line used by the DA9052/3 PMIC with disasterous consequences. This patch fixes the problem. Even though the DA9052/3 PMIC is capable generating periodic interrupts, ie TICKS, the method used to distinguish RTC_AF from RTC_PF events was flawed and can not work in conjunction with the regmap_irq kernel core. Thus that flawed detection has also been removed by the DA9052/3 PMIC RTC driver's irq handler, so that it no longer reports the wrong type of event to the kernel RTC core. The internal static functions within the DA9052/3 PMIC RTC driver have been changed to pass the 'da9052_rtc' structure instead of the 'da9052' because there is no backwards pointer from the 'da9052' structure. This patch fixes the three issues described above. The first is serious because usiing the RTC alarm set to a non minute boundary will eventually cause all component drivers that depend on the interrupt line to fail. The solution adopted is to round up to alarm time to the next highest minute. The second bug, reporting a RTC_PF event instead of an RTC_AF event turns out to not matter with the current implementation of the kernel RTC core as it seems to ignore the event type. However, should that change in the future it is better to fix the issue now and not have 'problems waiting to happen' The third set of changes are to make the da9052_rtc structure available to all the local internal functions in the driver. This was done during testing so that diagnostic data could be stored there. Should the solution to the first issue be found not acceptable, then the alternative of using the TICKS interrupt at the fixed one second interval in order to step to the exact second of the requested alarm requires an extra (alarm time) piece of data to be stored. In devices that use the alarm function to wake up from sleep, accuracy to the second will result in the device being awake for up to nearly a minute longer than expected. Signed-off-by: Anthony Olech <anthony.olech.opensource@diasemi.com> Cc: David Dajun Chen <dchen@diasemi.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-06-06 14:35:54 -07:00
rtc: driver for DA9052/53 PMIC v1 RTC Driver for Dialog Semiconductor DA9052/53 PMICs. This patch is functionally tested on Samsung SMDKV6410. [akpm@linux-foundation.org: clean up file header layout, remove unneeded initialisation of local arrays] Signed-off-by: David Dajun Chen <dchen@diasemi.com> Signed-off-by: Ashish Jangam <ashish.jangam@kpitcummins.com> Cc: Paul Gortmaker <p_gortmaker@yahoo.com> Cc: David Dajun Chen <dchen@diasemi.com> Cc: Samuel Ortiz <sameo@linux.intel.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-03-23 15:02:36 -07:00
drivers/rtc/rtc-da9052.c: ALARM causes interrupt storm Setting the alarm to a time not on a minute boundary results in repeated interrupts being generated by the DA9052/3 PMIC device until the kernel RTC core sees that the alarm has rung. Sometimes the number and frequency of interrupts can cause the kernel to disable the IRQ line used by the DA9052/3 PMIC with disasterous consequences. This patch fixes the problem. Even though the DA9052/3 PMIC is capable generating periodic interrupts, ie TICKS, the method used to distinguish RTC_AF from RTC_PF events was flawed and can not work in conjunction with the regmap_irq kernel core. Thus that flawed detection has also been removed by the DA9052/3 PMIC RTC driver's irq handler, so that it no longer reports the wrong type of event to the kernel RTC core. The internal static functions within the DA9052/3 PMIC RTC driver have been changed to pass the 'da9052_rtc' structure instead of the 'da9052' because there is no backwards pointer from the 'da9052' structure. This patch fixes the three issues described above. The first is serious because usiing the RTC alarm set to a non minute boundary will eventually cause all component drivers that depend on the interrupt line to fail. The solution adopted is to round up to alarm time to the next highest minute. The second bug, reporting a RTC_PF event instead of an RTC_AF event turns out to not matter with the current implementation of the kernel RTC core as it seems to ignore the event type. However, should that change in the future it is better to fix the issue now and not have 'problems waiting to happen' The third set of changes are to make the da9052_rtc structure available to all the local internal functions in the driver. This was done during testing so that diagnostic data could be stored there. Should the solution to the first issue be found not acceptable, then the alternative of using the TICKS interrupt at the fixed one second interval in order to step to the exact second of the requested alarm requires an extra (alarm time) piece of data to be stored. In devices that use the alarm function to wake up from sleep, accuracy to the second will result in the device being awake for up to nearly a minute longer than expected. Signed-off-by: Anthony Olech <anthony.olech.opensource@diasemi.com> Cc: David Dajun Chen <dchen@diasemi.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-06-06 14:35:54 -07:00
rtc: driver for DA9052/53 PMIC v1 RTC Driver for Dialog Semiconductor DA9052/53 PMICs. This patch is functionally tested on Samsung SMDKV6410. [akpm@linux-foundation.org: clean up file header layout, remove unneeded initialisation of local arrays] Signed-off-by: David Dajun Chen <dchen@diasemi.com> Signed-off-by: Ashish Jangam <ashish.jangam@kpitcummins.com> Cc: Paul Gortmaker <p_gortmaker@yahoo.com> Cc: David Dajun Chen <dchen@diasemi.com> Cc: Samuel Ortiz <sameo@linux.intel.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-03-23 15:02:36 -07:00
drivers/rtc/rtc-da9052.c: ALARM causes interrupt storm Setting the alarm to a time not on a minute boundary results in repeated interrupts being generated by the DA9052/3 PMIC device until the kernel RTC core sees that the alarm has rung. Sometimes the number and frequency of interrupts can cause the kernel to disable the IRQ line used by the DA9052/3 PMIC with disasterous consequences. This patch fixes the problem. Even though the DA9052/3 PMIC is capable generating periodic interrupts, ie TICKS, the method used to distinguish RTC_AF from RTC_PF events was flawed and can not work in conjunction with the regmap_irq kernel core. Thus that flawed detection has also been removed by the DA9052/3 PMIC RTC driver's irq handler, so that it no longer reports the wrong type of event to the kernel RTC core. The internal static functions within the DA9052/3 PMIC RTC driver have been changed to pass the 'da9052_rtc' structure instead of the 'da9052' because there is no backwards pointer from the 'da9052' structure. This patch fixes the three issues described above. The first is serious because usiing the RTC alarm set to a non minute boundary will eventually cause all component drivers that depend on the interrupt line to fail. The solution adopted is to round up to alarm time to the next highest minute. The second bug, reporting a RTC_PF event instead of an RTC_AF event turns out to not matter with the current implementation of the kernel RTC core as it seems to ignore the event type. However, should that change in the future it is better to fix the issue now and not have 'problems waiting to happen' The third set of changes are to make the da9052_rtc structure available to all the local internal functions in the driver. This was done during testing so that diagnostic data could be stored there. Should the solution to the first issue be found not acceptable, then the alternative of using the TICKS interrupt at the fixed one second interval in order to step to the exact second of the requested alarm requires an extra (alarm time) piece of data to be stored. In devices that use the alarm function to wake up from sleep, accuracy to the second will result in the device being awake for up to nearly a minute longer than expected. Signed-off-by: Anthony Olech <anthony.olech.opensource@diasemi.com> Cc: David Dajun Chen <dchen@diasemi.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-06-06 14:35:54 -07:00
rtc: driver for DA9052/53 PMIC v1 RTC Driver for Dialog Semiconductor DA9052/53 PMICs. This patch is functionally tested on Samsung SMDKV6410. [akpm@linux-foundation.org: clean up file header layout, remove unneeded initialisation of local arrays] Signed-off-by: David Dajun Chen <dchen@diasemi.com> Signed-off-by: Ashish Jangam <ashish.jangam@kpitcummins.com> Cc: Paul Gortmaker <p_gortmaker@yahoo.com> Cc: David Dajun Chen <dchen@diasemi.com> Cc: Samuel Ortiz <sameo@linux.intel.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-03-23 15:02:36 -07:00
drivers/rtc/rtc-da9052.c: add constraints to set valid year Signed-off-by: Adam Ward <adam.ward.opensource@diasemi.com> Tested-by: Adam Ward <adam.ward.opensource@diasemi.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-04-16 12:45:29 -07:00
drivers/rtc/rtc-da9052.c: ALARM causes interrupt storm Setting the alarm to a time not on a minute boundary results in repeated interrupts being generated by the DA9052/3 PMIC device until the kernel RTC core sees that the alarm has rung. Sometimes the number and frequency of interrupts can cause the kernel to disable the IRQ line used by the DA9052/3 PMIC with disasterous consequences. This patch fixes the problem. Even though the DA9052/3 PMIC is capable generating periodic interrupts, ie TICKS, the method used to distinguish RTC_AF from RTC_PF events was flawed and can not work in conjunction with the regmap_irq kernel core. Thus that flawed detection has also been removed by the DA9052/3 PMIC RTC driver's irq handler, so that it no longer reports the wrong type of event to the kernel RTC core. The internal static functions within the DA9052/3 PMIC RTC driver have been changed to pass the 'da9052_rtc' structure instead of the 'da9052' because there is no backwards pointer from the 'da9052' structure. This patch fixes the three issues described above. The first is serious because usiing the RTC alarm set to a non minute boundary will eventually cause all component drivers that depend on the interrupt line to fail. The solution adopted is to round up to alarm time to the next highest minute. The second bug, reporting a RTC_PF event instead of an RTC_AF event turns out to not matter with the current implementation of the kernel RTC core as it seems to ignore the event type. However, should that change in the future it is better to fix the issue now and not have 'problems waiting to happen' The third set of changes are to make the da9052_rtc structure available to all the local internal functions in the driver. This was done during testing so that diagnostic data could be stored there. Should the solution to the first issue be found not acceptable, then the alternative of using the TICKS interrupt at the fixed one second interval in order to step to the exact second of the requested alarm requires an extra (alarm time) piece of data to be stored. In devices that use the alarm function to wake up from sleep, accuracy to the second will result in the device being awake for up to nearly a minute longer than expected. Signed-off-by: Anthony Olech <anthony.olech.opensource@diasemi.com> Cc: David Dajun Chen <dchen@diasemi.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-06-06 14:35:54 -07:00
rtc: driver for DA9052/53 PMIC v1 RTC Driver for Dialog Semiconductor DA9052/53 PMICs. This patch is functionally tested on Samsung SMDKV6410. [akpm@linux-foundation.org: clean up file header layout, remove unneeded initialisation of local arrays] Signed-off-by: David Dajun Chen <dchen@diasemi.com> Signed-off-by: Ashish Jangam <ashish.jangam@kpitcummins.com> Cc: Paul Gortmaker <p_gortmaker@yahoo.com> Cc: David Dajun Chen <dchen@diasemi.com> Cc: Samuel Ortiz <sameo@linux.intel.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-03-23 15:02:36 -07:00
drivers/rtc/rtc-da9052.c: ALARM causes interrupt storm Setting the alarm to a time not on a minute boundary results in repeated interrupts being generated by the DA9052/3 PMIC device until the kernel RTC core sees that the alarm has rung. Sometimes the number and frequency of interrupts can cause the kernel to disable the IRQ line used by the DA9052/3 PMIC with disasterous consequences. This patch fixes the problem. Even though the DA9052/3 PMIC is capable generating periodic interrupts, ie TICKS, the method used to distinguish RTC_AF from RTC_PF events was flawed and can not work in conjunction with the regmap_irq kernel core. Thus that flawed detection has also been removed by the DA9052/3 PMIC RTC driver's irq handler, so that it no longer reports the wrong type of event to the kernel RTC core. The internal static functions within the DA9052/3 PMIC RTC driver have been changed to pass the 'da9052_rtc' structure instead of the 'da9052' because there is no backwards pointer from the 'da9052' structure. This patch fixes the three issues described above. The first is serious because usiing the RTC alarm set to a non minute boundary will eventually cause all component drivers that depend on the interrupt line to fail. The solution adopted is to round up to alarm time to the next highest minute. The second bug, reporting a RTC_PF event instead of an RTC_AF event turns out to not matter with the current implementation of the kernel RTC core as it seems to ignore the event type. However, should that change in the future it is better to fix the issue now and not have 'problems waiting to happen' The third set of changes are to make the da9052_rtc structure available to all the local internal functions in the driver. This was done during testing so that diagnostic data could be stored there. Should the solution to the first issue be found not acceptable, then the alternative of using the TICKS interrupt at the fixed one second interval in order to step to the exact second of the requested alarm requires an extra (alarm time) piece of data to be stored. In devices that use the alarm function to wake up from sleep, accuracy to the second will result in the device being awake for up to nearly a minute longer than expected. Signed-off-by: Anthony Olech <anthony.olech.opensource@diasemi.com> Cc: David Dajun Chen <dchen@diasemi.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-06-06 14:35:54 -07:00
rtc: driver for DA9052/53 PMIC v1 RTC Driver for Dialog Semiconductor DA9052/53 PMICs. This patch is functionally tested on Samsung SMDKV6410. [akpm@linux-foundation.org: clean up file header layout, remove unneeded initialisation of local arrays] Signed-off-by: David Dajun Chen <dchen@diasemi.com> Signed-off-by: Ashish Jangam <ashish.jangam@kpitcummins.com> Cc: Paul Gortmaker <p_gortmaker@yahoo.com> Cc: David Dajun Chen <dchen@diasemi.com> Cc: Samuel Ortiz <sameo@linux.intel.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-03-23 15:02:36 -07:00
drivers/rtc/rtc-da9052.c: ALARM causes interrupt storm Setting the alarm to a time not on a minute boundary results in repeated interrupts being generated by the DA9052/3 PMIC device until the kernel RTC core sees that the alarm has rung. Sometimes the number and frequency of interrupts can cause the kernel to disable the IRQ line used by the DA9052/3 PMIC with disasterous consequences. This patch fixes the problem. Even though the DA9052/3 PMIC is capable generating periodic interrupts, ie TICKS, the method used to distinguish RTC_AF from RTC_PF events was flawed and can not work in conjunction with the regmap_irq kernel core. Thus that flawed detection has also been removed by the DA9052/3 PMIC RTC driver's irq handler, so that it no longer reports the wrong type of event to the kernel RTC core. The internal static functions within the DA9052/3 PMIC RTC driver have been changed to pass the 'da9052_rtc' structure instead of the 'da9052' because there is no backwards pointer from the 'da9052' structure. This patch fixes the three issues described above. The first is serious because usiing the RTC alarm set to a non minute boundary will eventually cause all component drivers that depend on the interrupt line to fail. The solution adopted is to round up to alarm time to the next highest minute. The second bug, reporting a RTC_PF event instead of an RTC_AF event turns out to not matter with the current implementation of the kernel RTC core as it seems to ignore the event type. However, should that change in the future it is better to fix the issue now and not have 'problems waiting to happen' The third set of changes are to make the da9052_rtc structure available to all the local internal functions in the driver. This was done during testing so that diagnostic data could be stored there. Should the solution to the first issue be found not acceptable, then the alternative of using the TICKS interrupt at the fixed one second interval in order to step to the exact second of the requested alarm requires an extra (alarm time) piece of data to be stored. In devices that use the alarm function to wake up from sleep, accuracy to the second will result in the device being awake for up to nearly a minute longer than expected. Signed-off-by: Anthony Olech <anthony.olech.opensource@diasemi.com> Cc: David Dajun Chen <dchen@diasemi.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-06-06 14:35:54 -07:00
rtc: driver for DA9052/53 PMIC v1 RTC Driver for Dialog Semiconductor DA9052/53 PMICs. This patch is functionally tested on Samsung SMDKV6410. [akpm@linux-foundation.org: clean up file header layout, remove unneeded initialisation of local arrays] Signed-off-by: David Dajun Chen <dchen@diasemi.com> Signed-off-by: Ashish Jangam <ashish.jangam@kpitcummins.com> Cc: Paul Gortmaker <p_gortmaker@yahoo.com> Cc: David Dajun Chen <dchen@diasemi.com> Cc: Samuel Ortiz <sameo@linux.intel.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-03-23 15:02:36 -07:00
drivers/rtc/rtc-da9052.c: ALARM causes interrupt storm Setting the alarm to a time not on a minute boundary results in repeated interrupts being generated by the DA9052/3 PMIC device until the kernel RTC core sees that the alarm has rung. Sometimes the number and frequency of interrupts can cause the kernel to disable the IRQ line used by the DA9052/3 PMIC with disasterous consequences. This patch fixes the problem. Even though the DA9052/3 PMIC is capable generating periodic interrupts, ie TICKS, the method used to distinguish RTC_AF from RTC_PF events was flawed and can not work in conjunction with the regmap_irq kernel core. Thus that flawed detection has also been removed by the DA9052/3 PMIC RTC driver's irq handler, so that it no longer reports the wrong type of event to the kernel RTC core. The internal static functions within the DA9052/3 PMIC RTC driver have been changed to pass the 'da9052_rtc' structure instead of the 'da9052' because there is no backwards pointer from the 'da9052' structure. This patch fixes the three issues described above. The first is serious because usiing the RTC alarm set to a non minute boundary will eventually cause all component drivers that depend on the interrupt line to fail. The solution adopted is to round up to alarm time to the next highest minute. The second bug, reporting a RTC_PF event instead of an RTC_AF event turns out to not matter with the current implementation of the kernel RTC core as it seems to ignore the event type. However, should that change in the future it is better to fix the issue now and not have 'problems waiting to happen' The third set of changes are to make the da9052_rtc structure available to all the local internal functions in the driver. This was done during testing so that diagnostic data could be stored there. Should the solution to the first issue be found not acceptable, then the alternative of using the TICKS interrupt at the fixed one second interval in order to step to the exact second of the requested alarm requires an extra (alarm time) piece of data to be stored. In devices that use the alarm function to wake up from sleep, accuracy to the second will result in the device being awake for up to nearly a minute longer than expected. Signed-off-by: Anthony Olech <anthony.olech.opensource@diasemi.com> Cc: David Dajun Chen <dchen@diasemi.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-06-06 14:35:54 -07:00
rtc: driver for DA9052/53 PMIC v1 RTC Driver for Dialog Semiconductor DA9052/53 PMICs. This patch is functionally tested on Samsung SMDKV6410. [akpm@linux-foundation.org: clean up file header layout, remove unneeded initialisation of local arrays] Signed-off-by: David Dajun Chen <dchen@diasemi.com> Signed-off-by: Ashish Jangam <ashish.jangam@kpitcummins.com> Cc: Paul Gortmaker <p_gortmaker@yahoo.com> Cc: David Dajun Chen <dchen@diasemi.com> Cc: Samuel Ortiz <sameo@linux.intel.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-03-23 15:02:36 -07:00
Drivers: rtc: remove __dev* attributes. CONFIG_HOTPLUG is going away as an option. As a result, the __dev* markings need to be removed. This change removes the use of __devinit, __devexit_p, __devinitdata, __devinitconst, and __devexit from these drivers. Based on patches originally written by Bill Pemberton, but redone by me in order to handle some of the coding style issues better, by hand. Cc: Bill Pemberton <wfp5p@virginia.edu> Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com> Cc: Linus Walleij <linus.walleij@linaro.org> Cc: Mike Frysinger <vapier.adi@gmail.com> Cc: Wan ZongShun <mcuos.com@gmail.com> Cc: Guan Xuetao <gxt@mprc.pku.edu.cn> Cc: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2012-12-21 13:09:38 -08:00
rtc: driver for DA9052/53 PMIC v1 RTC Driver for Dialog Semiconductor DA9052/53 PMICs. This patch is functionally tested on Samsung SMDKV6410. [akpm@linux-foundation.org: clean up file header layout, remove unneeded initialisation of local arrays] Signed-off-by: David Dajun Chen <dchen@diasemi.com> Signed-off-by: Ashish Jangam <ashish.jangam@kpitcummins.com> Cc: Paul Gortmaker <p_gortmaker@yahoo.com> Cc: David Dajun Chen <dchen@diasemi.com> Cc: Samuel Ortiz <sameo@linux.intel.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-03-23 15:02:36 -07:00
drivers/rtc/rtc-da9052.c: ALARM causes interrupt storm Setting the alarm to a time not on a minute boundary results in repeated interrupts being generated by the DA9052/3 PMIC device until the kernel RTC core sees that the alarm has rung. Sometimes the number and frequency of interrupts can cause the kernel to disable the IRQ line used by the DA9052/3 PMIC with disasterous consequences. This patch fixes the problem. Even though the DA9052/3 PMIC is capable generating periodic interrupts, ie TICKS, the method used to distinguish RTC_AF from RTC_PF events was flawed and can not work in conjunction with the regmap_irq kernel core. Thus that flawed detection has also been removed by the DA9052/3 PMIC RTC driver's irq handler, so that it no longer reports the wrong type of event to the kernel RTC core. The internal static functions within the DA9052/3 PMIC RTC driver have been changed to pass the 'da9052_rtc' structure instead of the 'da9052' because there is no backwards pointer from the 'da9052' structure. This patch fixes the three issues described above. The first is serious because usiing the RTC alarm set to a non minute boundary will eventually cause all component drivers that depend on the interrupt line to fail. The solution adopted is to round up to alarm time to the next highest minute. The second bug, reporting a RTC_PF event instead of an RTC_AF event turns out to not matter with the current implementation of the kernel RTC core as it seems to ignore the event type. However, should that change in the future it is better to fix the issue now and not have 'problems waiting to happen' The third set of changes are to make the da9052_rtc structure available to all the local internal functions in the driver. This was done during testing so that diagnostic data could be stored there. Should the solution to the first issue be found not acceptable, then the alternative of using the TICKS interrupt at the fixed one second interval in order to step to the exact second of the requested alarm requires an extra (alarm time) piece of data to be stored. In devices that use the alarm function to wake up from sleep, accuracy to the second will result in the device being awake for up to nearly a minute longer than expected. Signed-off-by: Anthony Olech <anthony.olech.opensource@diasemi.com> Cc: David Dajun Chen <dchen@diasemi.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-06-06 14:35:54 -07:00
drivers/rtc/rtc-da9052.c: remove redundant private structure field Remove redundant irq field in private rtc structure. Signed-off-by: Anthony Olech <anthony.olech.opensource@diasemi.com> Acked-by: David Dajun Chen <david.chen@diasemi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-04-03 14:49:52 -07:00
drivers/rtc/rtc-da9052.c: fix for rtc device registration Add support for the virtual irq since now MFD only handles virtual irq Without this patch rtc device will fail in registration. (akpm: Ashish has a different version whcih will be needed for 3.8.x and earlier kernels) Signed-off-by: Ashish <ashish.jangam@kpitcummins.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-03-22 15:04:44 -07:00
rtc: driver for DA9052/53 PMIC v1 RTC Driver for Dialog Semiconductor DA9052/53 PMICs. This patch is functionally tested on Samsung SMDKV6410. [akpm@linux-foundation.org: clean up file header layout, remove unneeded initialisation of local arrays] Signed-off-by: David Dajun Chen <dchen@diasemi.com> Signed-off-by: Ashish Jangam <ashish.jangam@kpitcummins.com> Cc: Paul Gortmaker <p_gortmaker@yahoo.com> Cc: David Dajun Chen <dchen@diasemi.com> Cc: Samuel Ortiz <sameo@linux.intel.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-03-23 15:02:36 -07:00
drivers/rtc/rtc-da9052.c: ALARM causes interrupt storm Setting the alarm to a time not on a minute boundary results in repeated interrupts being generated by the DA9052/3 PMIC device until the kernel RTC core sees that the alarm has rung. Sometimes the number and frequency of interrupts can cause the kernel to disable the IRQ line used by the DA9052/3 PMIC with disasterous consequences. This patch fixes the problem. Even though the DA9052/3 PMIC is capable generating periodic interrupts, ie TICKS, the method used to distinguish RTC_AF from RTC_PF events was flawed and can not work in conjunction with the regmap_irq kernel core. Thus that flawed detection has also been removed by the DA9052/3 PMIC RTC driver's irq handler, so that it no longer reports the wrong type of event to the kernel RTC core. The internal static functions within the DA9052/3 PMIC RTC driver have been changed to pass the 'da9052_rtc' structure instead of the 'da9052' because there is no backwards pointer from the 'da9052' structure. This patch fixes the three issues described above. The first is serious because usiing the RTC alarm set to a non minute boundary will eventually cause all component drivers that depend on the interrupt line to fail. The solution adopted is to round up to alarm time to the next highest minute. The second bug, reporting a RTC_PF event instead of an RTC_AF event turns out to not matter with the current implementation of the kernel RTC core as it seems to ignore the event type. However, should that change in the future it is better to fix the issue now and not have 'problems waiting to happen' The third set of changes are to make the da9052_rtc structure available to all the local internal functions in the driver. This was done during testing so that diagnostic data could be stored there. Should the solution to the first issue be found not acceptable, then the alternative of using the TICKS interrupt at the fixed one second interval in order to step to the exact second of the requested alarm requires an extra (alarm time) piece of data to be stored. In devices that use the alarm function to wake up from sleep, accuracy to the second will result in the device being awake for up to nearly a minute longer than expected. Signed-off-by: Anthony Olech <anthony.olech.opensource@diasemi.com> Cc: David Dajun Chen <dchen@diasemi.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-06-06 14:35:54 -07:00
rtc/rtc-da9052: remove unneed devm_kfree call Freeing will trigger when driver unloads, so using devm_kfree() is not needed. Signed-off-by: Devendra Naga <devendra.aaru@gmail.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Cc: Ashish Jangam <ashish.jangam@kpitcummins.com> Cc: David Dajun Chen <dchen@diasemi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-07-30 14:41:54 -07:00
rtc: driver for DA9052/53 PMIC v1 RTC Driver for Dialog Semiconductor DA9052/53 PMICs. This patch is functionally tested on Samsung SMDKV6410. [akpm@linux-foundation.org: clean up file header layout, remove unneeded initialisation of local arrays] Signed-off-by: David Dajun Chen <dchen@diasemi.com> Signed-off-by: Ashish Jangam <ashish.jangam@kpitcummins.com> Cc: Paul Gortmaker <p_gortmaker@yahoo.com> Cc: David Dajun Chen <dchen@diasemi.com> Cc: Samuel Ortiz <sameo@linux.intel.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-03-23 15:02:36 -07:00
drivers/rtc/rtc-da9052.c: register ability of alarm to wake device from suspend Signed-off-by: Adam Ward <adam.ward.opensource@diasemi.com> Tested-by: Adam Ward <adam.ward.opensource@diasemi.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2015-04-16 12:45:32 -07:00
rtc: rtc-da9052: use devm_rtc_device_register() devm_rtc_device_register() is device managed and makes cleanup paths simpler. Signed-off-by: Jingoo Han <jg1.han@samsung.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-04-29 16:18:57 -07:00
rtc: driver for DA9052/53 PMIC v1 RTC Driver for Dialog Semiconductor DA9052/53 PMICs. This patch is functionally tested on Samsung SMDKV6410. [akpm@linux-foundation.org: clean up file header layout, remove unneeded initialisation of local arrays] Signed-off-by: David Dajun Chen <dchen@diasemi.com> Signed-off-by: Ashish Jangam <ashish.jangam@kpitcummins.com> Cc: Paul Gortmaker <p_gortmaker@yahoo.com> Cc: David Dajun Chen <dchen@diasemi.com> Cc: Samuel Ortiz <sameo@linux.intel.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-03-23 15:02:36 -07:00
drivers/rtc: Replace PTR_RET with PTR_ERR_OR_ZERO PTR_RET is now deprecated. Use PTR_ERR_OR_ZERO instead. Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2013-07-15 15:43:32 +05:30
rtc: driver for DA9052/53 PMIC v1 RTC Driver for Dialog Semiconductor DA9052/53 PMICs. This patch is functionally tested on Samsung SMDKV6410. [akpm@linux-foundation.org: clean up file header layout, remove unneeded initialisation of local arrays] Signed-off-by: David Dajun Chen <dchen@diasemi.com> Signed-off-by: Ashish Jangam <ashish.jangam@kpitcummins.com> Cc: Paul Gortmaker <p_gortmaker@yahoo.com> Cc: David Dajun Chen <dchen@diasemi.com> Cc: Samuel Ortiz <sameo@linux.intel.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-03-23 15:02:36 -07:00
drivers/rtc/rtc-da9052.c: ALARM causes interrupt storm Setting the alarm to a time not on a minute boundary results in repeated interrupts being generated by the DA9052/3 PMIC device until the kernel RTC core sees that the alarm has rung. Sometimes the number and frequency of interrupts can cause the kernel to disable the IRQ line used by the DA9052/3 PMIC with disasterous consequences. This patch fixes the problem. Even though the DA9052/3 PMIC is capable generating periodic interrupts, ie TICKS, the method used to distinguish RTC_AF from RTC_PF events was flawed and can not work in conjunction with the regmap_irq kernel core. Thus that flawed detection has also been removed by the DA9052/3 PMIC RTC driver's irq handler, so that it no longer reports the wrong type of event to the kernel RTC core. The internal static functions within the DA9052/3 PMIC RTC driver have been changed to pass the 'da9052_rtc' structure instead of the 'da9052' because there is no backwards pointer from the 'da9052' structure. This patch fixes the three issues described above. The first is serious because usiing the RTC alarm set to a non minute boundary will eventually cause all component drivers that depend on the interrupt line to fail. The solution adopted is to round up to alarm time to the next highest minute. The second bug, reporting a RTC_PF event instead of an RTC_AF event turns out to not matter with the current implementation of the kernel RTC core as it seems to ignore the event type. However, should that change in the future it is better to fix the issue now and not have 'problems waiting to happen' The third set of changes are to make the da9052_rtc structure available to all the local internal functions in the driver. This was done during testing so that diagnostic data could be stored there. Should the solution to the first issue be found not acceptable, then the alternative of using the TICKS interrupt at the fixed one second interval in order to step to the exact second of the requested alarm requires an extra (alarm time) piece of data to be stored. In devices that use the alarm function to wake up from sleep, accuracy to the second will result in the device being awake for up to nearly a minute longer than expected. Signed-off-by: Anthony Olech <anthony.olech.opensource@diasemi.com> Cc: David Dajun Chen <dchen@diasemi.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-06-06 14:35:54 -07:00
rtc: driver for DA9052/53 PMIC v1 RTC Driver for Dialog Semiconductor DA9052/53 PMICs. This patch is functionally tested on Samsung SMDKV6410. [akpm@linux-foundation.org: clean up file header layout, remove unneeded initialisation of local arrays] Signed-off-by: David Dajun Chen <dchen@diasemi.com> Signed-off-by: Ashish Jangam <ashish.jangam@kpitcummins.com> Cc: Paul Gortmaker <p_gortmaker@yahoo.com> Cc: David Dajun Chen <dchen@diasemi.com> Cc: Samuel Ortiz <sameo@linux.intel.com> Cc: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-03-23 15:02:36 -07:00