diff options
Diffstat (limited to 'target/linux/at91/patches-5.15/143-clocksource-drivers-timer-microchip-pit64b-Add-clock.patch')
| -rw-r--r-- | target/linux/at91/patches-5.15/143-clocksource-drivers-timer-microchip-pit64b-Add-clock.patch | 173 |
1 files changed, 0 insertions, 173 deletions
diff --git a/target/linux/at91/patches-5.15/143-clocksource-drivers-timer-microchip-pit64b-Add-clock.patch b/target/linux/at91/patches-5.15/143-clocksource-drivers-timer-microchip-pit64b-Add-clock.patch deleted file mode 100644 index 7b2462cd00..0000000000 --- a/target/linux/at91/patches-5.15/143-clocksource-drivers-timer-microchip-pit64b-Add-clock.patch +++ /dev/null @@ -1,173 +0,0 @@ -From 5f090a664d62ceeaf9a0f482426e35cab18d65a9 Mon Sep 17 00:00:00 2001 -From: Claudiu Beznea <claudiu.beznea@microchip.com> -Date: Tue, 19 Jan 2021 14:59:25 +0200 -Subject: [PATCH 143/247] clocksource/drivers/timer-microchip-pit64b: Add - clocksource suspend/resume - -Add suspend/resume support for clocksource timer. - -Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com> -Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org> -Link: https://lore.kernel.org/r/1611061165-30180-1-git-send-email-claudiu.beznea@microchip.com ---- - drivers/clocksource/timer-microchip-pit64b.c | 86 ++++++++++++++++---- - 1 file changed, 71 insertions(+), 15 deletions(-) - ---- a/drivers/clocksource/timer-microchip-pit64b.c -+++ b/drivers/clocksource/timer-microchip-pit64b.c -@@ -71,10 +71,24 @@ struct mchp_pit64b_clkevt { - struct clock_event_device clkevt; - }; - --#define to_mchp_pit64b_timer(x) \ -+#define clkevt_to_mchp_pit64b_timer(x) \ - ((struct mchp_pit64b_timer *)container_of(x,\ - struct mchp_pit64b_clkevt, clkevt)) - -+/** -+ * mchp_pit64b_clksrc - PIT64B clocksource data structure -+ * @timer: PIT64B timer -+ * @clksrc: clocksource -+ */ -+struct mchp_pit64b_clksrc { -+ struct mchp_pit64b_timer timer; -+ struct clocksource clksrc; -+}; -+ -+#define clksrc_to_mchp_pit64b_timer(x) \ -+ ((struct mchp_pit64b_timer *)container_of(x,\ -+ struct mchp_pit64b_clksrc, clksrc)) -+ - /* Base address for clocksource timer. */ - static void __iomem *mchp_pit64b_cs_base; - /* Default cycles for clockevent timer. */ -@@ -116,6 +130,36 @@ static inline void mchp_pit64b_reset(str - writel_relaxed(MCHP_PIT64B_CR_START, timer->base + MCHP_PIT64B_CR); - } - -+static void mchp_pit64b_suspend(struct mchp_pit64b_timer *timer) -+{ -+ writel_relaxed(MCHP_PIT64B_CR_SWRST, timer->base + MCHP_PIT64B_CR); -+ if (timer->mode & MCHP_PIT64B_MR_SGCLK) -+ clk_disable_unprepare(timer->gclk); -+ clk_disable_unprepare(timer->pclk); -+} -+ -+static void mchp_pit64b_resume(struct mchp_pit64b_timer *timer) -+{ -+ clk_prepare_enable(timer->pclk); -+ if (timer->mode & MCHP_PIT64B_MR_SGCLK) -+ clk_prepare_enable(timer->gclk); -+} -+ -+static void mchp_pit64b_clksrc_suspend(struct clocksource *cs) -+{ -+ struct mchp_pit64b_timer *timer = clksrc_to_mchp_pit64b_timer(cs); -+ -+ mchp_pit64b_suspend(timer); -+} -+ -+static void mchp_pit64b_clksrc_resume(struct clocksource *cs) -+{ -+ struct mchp_pit64b_timer *timer = clksrc_to_mchp_pit64b_timer(cs); -+ -+ mchp_pit64b_resume(timer); -+ mchp_pit64b_reset(timer, ULLONG_MAX, MCHP_PIT64B_MR_CONT, 0); -+} -+ - static u64 mchp_pit64b_clksrc_read(struct clocksource *cs) - { - return mchp_pit64b_cnt_read(mchp_pit64b_cs_base); -@@ -128,7 +172,7 @@ static u64 notrace mchp_pit64b_sched_rea - - static int mchp_pit64b_clkevt_shutdown(struct clock_event_device *cedev) - { -- struct mchp_pit64b_timer *timer = to_mchp_pit64b_timer(cedev); -+ struct mchp_pit64b_timer *timer = clkevt_to_mchp_pit64b_timer(cedev); - - writel_relaxed(MCHP_PIT64B_CR_SWRST, timer->base + MCHP_PIT64B_CR); - -@@ -137,7 +181,7 @@ static int mchp_pit64b_clkevt_shutdown(s - - static int mchp_pit64b_clkevt_set_periodic(struct clock_event_device *cedev) - { -- struct mchp_pit64b_timer *timer = to_mchp_pit64b_timer(cedev); -+ struct mchp_pit64b_timer *timer = clkevt_to_mchp_pit64b_timer(cedev); - - mchp_pit64b_reset(timer, mchp_pit64b_ce_cycles, MCHP_PIT64B_MR_CONT, - MCHP_PIT64B_IER_PERIOD); -@@ -148,7 +192,7 @@ static int mchp_pit64b_clkevt_set_period - static int mchp_pit64b_clkevt_set_next_event(unsigned long evt, - struct clock_event_device *cedev) - { -- struct mchp_pit64b_timer *timer = to_mchp_pit64b_timer(cedev); -+ struct mchp_pit64b_timer *timer = clkevt_to_mchp_pit64b_timer(cedev); - - mchp_pit64b_reset(timer, evt, MCHP_PIT64B_MR_ONE_SHOT, - MCHP_PIT64B_IER_PERIOD); -@@ -158,21 +202,16 @@ static int mchp_pit64b_clkevt_set_next_e - - static void mchp_pit64b_clkevt_suspend(struct clock_event_device *cedev) - { -- struct mchp_pit64b_timer *timer = to_mchp_pit64b_timer(cedev); -+ struct mchp_pit64b_timer *timer = clkevt_to_mchp_pit64b_timer(cedev); - -- writel_relaxed(MCHP_PIT64B_CR_SWRST, timer->base + MCHP_PIT64B_CR); -- if (timer->mode & MCHP_PIT64B_MR_SGCLK) -- clk_disable_unprepare(timer->gclk); -- clk_disable_unprepare(timer->pclk); -+ mchp_pit64b_suspend(timer); - } - - static void mchp_pit64b_clkevt_resume(struct clock_event_device *cedev) - { -- struct mchp_pit64b_timer *timer = to_mchp_pit64b_timer(cedev); -+ struct mchp_pit64b_timer *timer = clkevt_to_mchp_pit64b_timer(cedev); - -- clk_prepare_enable(timer->pclk); -- if (timer->mode & MCHP_PIT64B_MR_SGCLK) -- clk_prepare_enable(timer->gclk); -+ mchp_pit64b_resume(timer); - } - - static irqreturn_t mchp_pit64b_interrupt(int irq, void *dev_id) -@@ -296,20 +335,37 @@ done: - static int __init mchp_pit64b_init_clksrc(struct mchp_pit64b_timer *timer, - u32 clk_rate) - { -+ struct mchp_pit64b_clksrc *cs; - int ret; - -+ cs = kzalloc(sizeof(*cs), GFP_KERNEL); -+ if (!cs) -+ return -ENOMEM; -+ - mchp_pit64b_reset(timer, ULLONG_MAX, MCHP_PIT64B_MR_CONT, 0); - - mchp_pit64b_cs_base = timer->base; - -- ret = clocksource_mmio_init(timer->base, MCHP_PIT64B_NAME, clk_rate, -- 210, 64, mchp_pit64b_clksrc_read); -+ cs->timer.base = timer->base; -+ cs->timer.pclk = timer->pclk; -+ cs->timer.gclk = timer->gclk; -+ cs->timer.mode = timer->mode; -+ cs->clksrc.name = MCHP_PIT64B_NAME; -+ cs->clksrc.mask = CLOCKSOURCE_MASK(64); -+ cs->clksrc.flags = CLOCK_SOURCE_IS_CONTINUOUS; -+ cs->clksrc.rating = 210; -+ cs->clksrc.read = mchp_pit64b_clksrc_read; -+ cs->clksrc.suspend = mchp_pit64b_clksrc_suspend; -+ cs->clksrc.resume = mchp_pit64b_clksrc_resume; -+ -+ ret = clocksource_register_hz(&cs->clksrc, clk_rate); - if (ret) { - pr_debug("clksrc: Failed to register PIT64B clocksource!\n"); - - /* Stop timer. */ - writel_relaxed(MCHP_PIT64B_CR_SWRST, - timer->base + MCHP_PIT64B_CR); -+ kfree(cs); - - return ret; - } |