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linux/drivers/rtc/rtc-stm32.c

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rtc: add STM32 RTC driver This patch adds support for the STM32 RTC. Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com> Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2017-01-11 14:46:43 +01:00
rtc: stm32: add STM32H7 RTC support This patch adds support for STM32H7 RTC. On STM32H7, the RTC bus interface clock (APB clock) needs to be enabled. Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2017-07-06 10:47:45 +02:00
rtc: add STM32 RTC driver This patch adds support for the STM32 RTC. Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com> Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2017-01-11 14:46:43 +01:00
rtc: stm32: add STM32H7 RTC support This patch adds support for STM32H7 RTC. On STM32H7, the RTC bus interface clock (APB clock) needs to be enabled. Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2017-07-06 10:47:45 +02:00
rtc: add STM32 RTC driver This patch adds support for the STM32 RTC. Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com> Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2017-01-11 14:46:43 +01:00
rtc: stm32: add STM32H7 RTC support This patch adds support for STM32H7 RTC. On STM32H7, the RTC bus interface clock (APB clock) needs to be enabled. Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2017-07-06 10:47:45 +02:00
rtc: add STM32 RTC driver This patch adds support for the STM32 RTC. Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com> Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2017-01-11 14:46:43 +01:00
rtc: stm32: add STM32H7 RTC support This patch adds support for STM32H7 RTC. On STM32H7, the RTC bus interface clock (APB clock) needs to be enabled. Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2017-07-06 10:47:45 +02:00
rtc: add STM32 RTC driver This patch adds support for the STM32 RTC. Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com> Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2017-01-11 14:46:43 +01:00
rtc: stm32: add STM32H7 RTC support This patch adds support for STM32H7 RTC. On STM32H7, the RTC bus interface clock (APB clock) needs to be enabled. Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2017-07-06 10:47:45 +02:00
rtc: add STM32 RTC driver This patch adds support for the STM32 RTC. Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com> Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2017-01-11 14:46:43 +01:00
rtc: stm32: fix comparison warnings This patches fixes comparison between signed and unsigned values as it could produce an incorrect result when the signed value is converted to unsigned: drivers/rtc/rtc-stm32.c: In function 'stm32_rtc_valid_alrm': drivers/rtc/rtc-stm32.c:404:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if ((((tm->tm_year > cur_year) && ... It also fixes comparison always true or false due to the fact that unsigned value is compared against zero with >= or <: drivers/rtc/rtc-stm32.c: In function 'stm32_rtc_init': drivers/rtc/rtc-stm32.c:514:35: warning: comparison of unsigned expression >= 0 is always true [-Wtype-limits] for (pred_a = pred_a_max; pred_a >= 0; pred_a-- ) { drivers/rtc/rtc-stm32.c:530:44: warning: comparison of unsigned expression < 0 is always false [-Wtype-limits] (rate - ((pred_a + 1) * (pred_s + 1)) < 0) ? Fixes: 4e64350f42e2 ("rtc: add STM32 RTC driver") Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2017-01-16 11:08:53 +01:00
rtc: add STM32 RTC driver This patch adds support for the STM32 RTC. Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com> Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2017-01-11 14:46:43 +01:00
rtc: stm32: add STM32H7 RTC support This patch adds support for STM32H7 RTC. On STM32H7, the RTC bus interface clock (APB clock) needs to be enabled. Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2017-07-06 10:47:45 +02:00
rtc: add STM32 RTC driver This patch adds support for the STM32 RTC. Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com> Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2017-01-11 14:46:43 +01:00
rtc: stm32: add STM32H7 RTC support This patch adds support for STM32H7 RTC. On STM32H7, the RTC bus interface clock (APB clock) needs to be enabled. Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2017-07-06 10:47:45 +02:00
rtc: add STM32 RTC driver This patch adds support for the STM32 RTC. Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com> Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2017-01-11 14:46:43 +01:00
rtc: stm32: add STM32H7 RTC support This patch adds support for STM32H7 RTC. On STM32H7, the RTC bus interface clock (APB clock) needs to be enabled. Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2017-07-06 10:47:45 +02:00
rtc: add STM32 RTC driver This patch adds support for the STM32 RTC. Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com> Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2017-01-11 14:46:43 +01:00
rtc: stm32: add STM32H7 RTC support This patch adds support for STM32H7 RTC. On STM32H7, the RTC bus interface clock (APB clock) needs to be enabled. Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2017-07-06 10:47:45 +02:00
rtc: add STM32 RTC driver This patch adds support for the STM32 RTC. Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com> Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2017-01-11 14:46:43 +01:00
rtc: stm32: fix comparison warnings This patches fixes comparison between signed and unsigned values as it could produce an incorrect result when the signed value is converted to unsigned: drivers/rtc/rtc-stm32.c: In function 'stm32_rtc_valid_alrm': drivers/rtc/rtc-stm32.c:404:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if ((((tm->tm_year > cur_year) && ... It also fixes comparison always true or false due to the fact that unsigned value is compared against zero with >= or <: drivers/rtc/rtc-stm32.c: In function 'stm32_rtc_init': drivers/rtc/rtc-stm32.c:514:35: warning: comparison of unsigned expression >= 0 is always true [-Wtype-limits] for (pred_a = pred_a_max; pred_a >= 0; pred_a-- ) { drivers/rtc/rtc-stm32.c:530:44: warning: comparison of unsigned expression < 0 is always false [-Wtype-limits] (rate - ((pred_a + 1) * (pred_s + 1)) < 0) ? Fixes: 4e64350f42e2 ("rtc: add STM32 RTC driver") Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2017-01-16 11:08:53 +01:00
rtc: add STM32 RTC driver This patch adds support for the STM32 RTC. Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com> Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2017-01-11 14:46:43 +01:00
rtc: stm32: add STM32H7 RTC support This patch adds support for STM32H7 RTC. On STM32H7, the RTC bus interface clock (APB clock) needs to be enabled. Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2017-07-06 10:47:45 +02:00
rtc: stm32: fix comparison warnings This patches fixes comparison between signed and unsigned values as it could produce an incorrect result when the signed value is converted to unsigned: drivers/rtc/rtc-stm32.c: In function 'stm32_rtc_valid_alrm': drivers/rtc/rtc-stm32.c:404:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if ((((tm->tm_year > cur_year) && ... It also fixes comparison always true or false due to the fact that unsigned value is compared against zero with >= or <: drivers/rtc/rtc-stm32.c: In function 'stm32_rtc_init': drivers/rtc/rtc-stm32.c:514:35: warning: comparison of unsigned expression >= 0 is always true [-Wtype-limits] for (pred_a = pred_a_max; pred_a >= 0; pred_a-- ) { drivers/rtc/rtc-stm32.c:530:44: warning: comparison of unsigned expression < 0 is always false [-Wtype-limits] (rate - ((pred_a + 1) * (pred_s + 1)) < 0) ? Fixes: 4e64350f42e2 ("rtc: add STM32 RTC driver") Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2017-01-16 11:08:53 +01:00
rtc: add STM32 RTC driver This patch adds support for the STM32 RTC. Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com> Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2017-01-11 14:46:43 +01:00
rtc: stm32: add STM32H7 RTC support This patch adds support for STM32H7 RTC. On STM32H7, the RTC bus interface clock (APB clock) needs to be enabled. Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2017-07-06 10:47:45 +02:00
rtc: add STM32 RTC driver This patch adds support for the STM32 RTC. Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com> Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2017-01-11 14:46:43 +01:00
rtc: stm32: add STM32H7 RTC support This patch adds support for STM32H7 RTC. On STM32H7, the RTC bus interface clock (APB clock) needs to be enabled. Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2017-07-06 10:47:45 +02:00
rtc: add STM32 RTC driver This patch adds support for the STM32 RTC. Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com> Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2017-01-11 14:46:43 +01:00
rtc: stm32: add STM32H7 RTC support This patch adds support for STM32H7 RTC. On STM32H7, the RTC bus interface clock (APB clock) needs to be enabled. Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2017-07-06 10:47:45 +02:00
rtc: add STM32 RTC driver This patch adds support for the STM32 RTC. Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com> Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2017-01-11 14:46:43 +01:00
rtc: stm32: add STM32H7 RTC support This patch adds support for STM32H7 RTC. On STM32H7, the RTC bus interface clock (APB clock) needs to be enabled. Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2017-07-06 10:47:45 +02:00
rtc: add STM32 RTC driver This patch adds support for the STM32 RTC. Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com> Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2017-01-11 14:46:43 +01:00
rtc: stm32: add STM32H7 RTC support This patch adds support for STM32H7 RTC. On STM32H7, the RTC bus interface clock (APB clock) needs to be enabled. Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2017-07-06 10:47:45 +02:00
rtc: add STM32 RTC driver This patch adds support for the STM32 RTC. Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com> Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2017-01-11 14:46:43 +01:00
rtc: stm32: add STM32H7 RTC support This patch adds support for STM32H7 RTC. On STM32H7, the RTC bus interface clock (APB clock) needs to be enabled. Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2017-07-06 10:47:45 +02:00
rtc: add STM32 RTC driver This patch adds support for the STM32 RTC. Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com> Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2017-01-11 14:46:43 +01:00
rtc: stm32: use 0 instead of ~PWR_CR_DBP in regmap_update_bits Using the ~ operator on a BIT() constant results in a large 'unsigned long' constant that won't fit into an 'unsigned int' function argument on 64-bit architectures, resulting in a harmless build warning in x86 allmodconfig: drivers/rtc/rtc-stm32.c: In function 'stm32_rtc_probe': drivers/rtc/rtc-stm32.c:651:51: error: large integer implicitly truncated to unsigned type [-Werror=overflow] regmap_update_bits(rtc->dbp, PWR_CR, PWR_CR_DBP, ~PWR_CR_DBP); As PWR_CR_DBP mask prevents other bits to be cleared, replace all ~PWR_CR_DBP by 0. Fixes: 4e64350f42e2 ("rtc: add STM32 RTC driver") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2017-01-16 09:57:38 +01:00
rtc: add STM32 RTC driver This patch adds support for the STM32 RTC. Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com> Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2017-01-11 14:46:43 +01:00
rtc: stm32: remove __exit annotation on remove callback The remove function can be called at runtime for a manual 'unbind' operation and must not be left out from a built-in driver, as kbuild complains: `stm32_rtc_remove' referenced in section `.data.stm32_rtc_driver' of drivers/rtc/rtc-stm32.o: defined in discarded section `.exit.text' of drivers/rtc/rtc-stm32.o This removes the extraneous annotation. Fixes: 4e64350f42e2 ("rtc: add STM32 RTC driver") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2017-01-13 16:32:51 +01:00
rtc: add STM32 RTC driver This patch adds support for the STM32 RTC. Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com> Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2017-01-11 14:46:43 +01:00
rtc: stm32: add STM32H7 RTC support This patch adds support for STM32H7 RTC. On STM32H7, the RTC bus interface clock (APB clock) needs to be enabled. Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2017-07-06 10:47:45 +02:00
rtc: add STM32 RTC driver This patch adds support for the STM32 RTC. Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com> Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2017-01-11 14:46:43 +01:00
rtc: stm32: use 0 instead of ~PWR_CR_DBP in regmap_update_bits Using the ~ operator on a BIT() constant results in a large 'unsigned long' constant that won't fit into an 'unsigned int' function argument on 64-bit architectures, resulting in a harmless build warning in x86 allmodconfig: drivers/rtc/rtc-stm32.c: In function 'stm32_rtc_probe': drivers/rtc/rtc-stm32.c:651:51: error: large integer implicitly truncated to unsigned type [-Werror=overflow] regmap_update_bits(rtc->dbp, PWR_CR, PWR_CR_DBP, ~PWR_CR_DBP); As PWR_CR_DBP mask prevents other bits to be cleared, replace all ~PWR_CR_DBP by 0. Fixes: 4e64350f42e2 ("rtc: add STM32 RTC driver") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2017-01-16 09:57:38 +01:00
rtc: add STM32 RTC driver This patch adds support for the STM32 RTC. Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com> Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2017-01-11 14:46:43 +01:00
rtc: stm32: add STM32H7 RTC support This patch adds support for STM32H7 RTC. On STM32H7, the RTC bus interface clock (APB clock) needs to be enabled. Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2017-07-06 10:47:45 +02:00
rtc: add STM32 RTC driver This patch adds support for the STM32 RTC. Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com> Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2017-01-11 14:46:43 +01:00
rtc: stm32: add STM32H7 RTC support This patch adds support for STM32H7 RTC. On STM32H7, the RTC bus interface clock (APB clock) needs to be enabled. Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2017-07-06 10:47:45 +02:00
rtc: add STM32 RTC driver This patch adds support for the STM32 RTC. Signed-off-by: Amelie Delaunay <amelie.delaunay@st.com> Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org> Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>
2017-01-11 14:46:43 +01:00