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Thu, 26 Jul 2018 03:16:22 -0700 (PDT) Received: from localhost.localdomain ([2a01:e35:879a:6cd0:35bd:fbdf:74b5:3f51]) by smtp.gmail.com with ESMTPSA id f6-v6sm957303wrp.30.2018.07.26.03.16.20 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Thu, 26 Jul 2018 03:16:21 -0700 (PDT) From: Daniel Lezcano To: tglx@linutronix.de, mingo@kernel.org Subject: [PATCH 4/7] clocksource/drivers/timer-mediatek: Use specific prefix for GPT Date: Thu, 26 Jul 2018 12:15:27 +0200 Message-Id: <1532600131-28168-4-git-send-email-daniel.lezcano@linaro.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1532600131-28168-1-git-send-email-daniel.lezcano@linaro.org> References: <014f94f9-54d4-1ee0-aa89-67ca5d221989@free.fr> <1532600131-28168-1-git-send-email-daniel.lezcano@linaro.org> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20180726_031627_972780_430B929B X-CRM114-Status: GOOD ( 14.14 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: baolin.wang@linaro.org, linux-kernel@vger.kernel.org, "moderated list:ARM/Mediatek SoC support" , Sudeep.Holla@arm.com, Matthias Brugger , stanley.chu@mediatek.com, "moderated list:ARM/Mediatek SoC support" MIME-Version: 1.0 Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+patchwork-linux-mediatek=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP From: Stanley Chu Use specific prefix to specify the name of supported timer hardware: "General Purpose Timer (GPT)". Signed-off-by: Stanley Chu Signed-off-by: Daniel Lezcano --- drivers/clocksource/timer-mediatek.c | 157 ++++++++++++++++++----------------- 1 file changed, 80 insertions(+), 77 deletions(-) diff --git a/drivers/clocksource/timer-mediatek.c b/drivers/clocksource/timer-mediatek.c index f9b724f..e3657d2 100644 --- a/drivers/clocksource/timer-mediatek.c +++ b/drivers/clocksource/timer-mediatek.c @@ -29,32 +29,35 @@ #include #include -#define GPT_IRQ_EN_REG 0x00 -#define GPT_IRQ_ENABLE(val) BIT((val) - 1) -#define GPT_IRQ_ACK_REG 0x08 -#define GPT_IRQ_ACK(val) BIT((val) - 1) - -#define TIMER_CTRL_REG(val) (0x10 * (val)) -#define TIMER_CTRL_OP(val) (((val) & 0x3) << 4) -#define TIMER_CTRL_OP_ONESHOT (0) -#define TIMER_CTRL_OP_REPEAT (1) -#define TIMER_CTRL_OP_FREERUN (3) -#define TIMER_CTRL_CLEAR (2) -#define TIMER_CTRL_ENABLE (1) -#define TIMER_CTRL_DISABLE (0) - -#define TIMER_CLK_REG(val) (0x04 + (0x10 * (val))) -#define TIMER_CLK_SRC(val) (((val) & 0x1) << 4) -#define TIMER_CLK_SRC_SYS13M (0) -#define TIMER_CLK_SRC_RTC32K (1) -#define TIMER_CLK_DIV1 (0x0) -#define TIMER_CLK_DIV2 (0x1) - -#define TIMER_CNT_REG(val) (0x08 + (0x10 * (val))) -#define TIMER_CMP_REG(val) (0x0C + (0x10 * (val))) - -#define GPT_CLK_EVT 1 -#define GPT_CLK_SRC 2 +#define TIMER_CLK_EVT (1) +#define TIMER_CLK_SRC (2) + +#define TIMER_SYNC_TICKS (3) + +/* gpt */ +#define GPT_IRQ_EN_REG 0x00 +#define GPT_IRQ_ENABLE(val) BIT((val) - 1) +#define GPT_IRQ_ACK_REG 0x08 +#define GPT_IRQ_ACK(val) BIT((val) - 1) + +#define GPT_CTRL_REG(val) (0x10 * (val)) +#define GPT_CTRL_OP(val) (((val) & 0x3) << 4) +#define GPT_CTRL_OP_ONESHOT (0) +#define GPT_CTRL_OP_REPEAT (1) +#define GPT_CTRL_OP_FREERUN (3) +#define GPT_CTRL_CLEAR (2) +#define GPT_CTRL_ENABLE (1) +#define GPT_CTRL_DISABLE (0) + +#define GPT_CLK_REG(val) (0x04 + (0x10 * (val))) +#define GPT_CLK_SRC(val) (((val) & 0x1) << 4) +#define GPT_CLK_SRC_SYS13M (0) +#define GPT_CLK_SRC_RTC32K (1) +#define GPT_CLK_DIV1 (0x0) +#define GPT_CLK_DIV2 (0x1) + +#define GPT_CNT_REG(val) (0x08 + (0x10 * (val))) +#define GPT_CMP_REG(val) (0x0C + (0x10 * (val))) struct mtk_clock_event_device { void __iomem *gpt_base; @@ -64,7 +67,7 @@ struct mtk_clock_event_device { static void __iomem *gpt_sched_reg __read_mostly; -static u64 notrace mtk_read_sched_clock(void) +static u64 notrace mtk_gpt_read_sched_clock(void) { return readl_relaxed(gpt_sched_reg); } @@ -75,22 +78,22 @@ static inline struct mtk_clock_event_device *to_mtk_clk( return container_of(c, struct mtk_clock_event_device, dev); } -static void mtk_clkevt_time_stop(struct mtk_clock_event_device *evt, u8 timer) +static void mtk_gpt_clkevt_time_stop(struct mtk_clock_event_device *evt, u8 timer) { u32 val; - val = readl(evt->gpt_base + TIMER_CTRL_REG(timer)); - writel(val & ~TIMER_CTRL_ENABLE, evt->gpt_base + - TIMER_CTRL_REG(timer)); + val = readl(evt->gpt_base + GPT_CTRL_REG(timer)); + writel(val & ~GPT_CTRL_ENABLE, evt->gpt_base + + GPT_CTRL_REG(timer)); } -static void mtk_clkevt_time_setup(struct mtk_clock_event_device *evt, +static void mtk_gpt_clkevt_time_setup(struct mtk_clock_event_device *evt, unsigned long delay, u8 timer) { - writel(delay, evt->gpt_base + TIMER_CMP_REG(timer)); + writel(delay, evt->gpt_base + GPT_CMP_REG(timer)); } -static void mtk_clkevt_time_start(struct mtk_clock_event_device *evt, +static void mtk_gpt_clkevt_time_start(struct mtk_clock_event_device *evt, bool periodic, u8 timer) { u32 val; @@ -98,75 +101,75 @@ static void mtk_clkevt_time_start(struct mtk_clock_event_device *evt, /* Acknowledge interrupt */ writel(GPT_IRQ_ACK(timer), evt->gpt_base + GPT_IRQ_ACK_REG); - val = readl(evt->gpt_base + TIMER_CTRL_REG(timer)); + val = readl(evt->gpt_base + GPT_CTRL_REG(timer)); /* Clear 2 bit timer operation mode field */ - val &= ~TIMER_CTRL_OP(0x3); + val &= ~GPT_CTRL_OP(0x3); if (periodic) - val |= TIMER_CTRL_OP(TIMER_CTRL_OP_REPEAT); + val |= GPT_CTRL_OP(GPT_CTRL_OP_REPEAT); else - val |= TIMER_CTRL_OP(TIMER_CTRL_OP_ONESHOT); + val |= GPT_CTRL_OP(GPT_CTRL_OP_ONESHOT); - writel(val | TIMER_CTRL_ENABLE | TIMER_CTRL_CLEAR, - evt->gpt_base + TIMER_CTRL_REG(timer)); + writel(val | GPT_CTRL_ENABLE | GPT_CTRL_CLEAR, + evt->gpt_base + GPT_CTRL_REG(timer)); } -static int mtk_clkevt_shutdown(struct clock_event_device *clk) +static int mtk_gpt_clkevt_shutdown(struct clock_event_device *clk) { - mtk_clkevt_time_stop(to_mtk_clk(clk), GPT_CLK_EVT); + mtk_gpt_clkevt_time_stop(to_mtk_clk(clk), TIMER_CLK_EVT); return 0; } -static int mtk_clkevt_set_periodic(struct clock_event_device *clk) +static int mtk_gpt_clkevt_set_periodic(struct clock_event_device *clk) { struct mtk_clock_event_device *evt = to_mtk_clk(clk); - mtk_clkevt_time_stop(evt, GPT_CLK_EVT); - mtk_clkevt_time_setup(evt, evt->ticks_per_jiffy, GPT_CLK_EVT); - mtk_clkevt_time_start(evt, true, GPT_CLK_EVT); + mtk_gpt_clkevt_time_stop(evt, TIMER_CLK_EVT); + mtk_gpt_clkevt_time_setup(evt, evt->ticks_per_jiffy, TIMER_CLK_EVT); + mtk_gpt_clkevt_time_start(evt, true, TIMER_CLK_EVT); return 0; } -static int mtk_clkevt_next_event(unsigned long event, +static int mtk_gpt_clkevt_next_event(unsigned long event, struct clock_event_device *clk) { struct mtk_clock_event_device *evt = to_mtk_clk(clk); - mtk_clkevt_time_stop(evt, GPT_CLK_EVT); - mtk_clkevt_time_setup(evt, event, GPT_CLK_EVT); - mtk_clkevt_time_start(evt, false, GPT_CLK_EVT); + mtk_gpt_clkevt_time_stop(evt, TIMER_CLK_EVT); + mtk_gpt_clkevt_time_setup(evt, event, TIMER_CLK_EVT); + mtk_gpt_clkevt_time_start(evt, false, TIMER_CLK_EVT); return 0; } -static irqreturn_t mtk_timer_interrupt(int irq, void *dev_id) +static irqreturn_t mtk_gpt_interrupt(int irq, void *dev_id) { struct mtk_clock_event_device *evt = dev_id; /* Acknowledge timer0 irq */ - writel(GPT_IRQ_ACK(GPT_CLK_EVT), evt->gpt_base + GPT_IRQ_ACK_REG); + writel(GPT_IRQ_ACK(TIMER_CLK_EVT), evt->gpt_base + GPT_IRQ_ACK_REG); evt->dev.event_handler(&evt->dev); return IRQ_HANDLED; } static void -__init mtk_timer_setup(struct mtk_clock_event_device *evt, u8 timer, u8 option) +__init mtk_gpt_setup(struct mtk_clock_event_device *evt, u8 timer, u8 option) { - writel(TIMER_CTRL_CLEAR | TIMER_CTRL_DISABLE, - evt->gpt_base + TIMER_CTRL_REG(timer)); + writel(GPT_CTRL_CLEAR | GPT_CTRL_DISABLE, + evt->gpt_base + GPT_CTRL_REG(timer)); - writel(TIMER_CLK_SRC(TIMER_CLK_SRC_SYS13M) | TIMER_CLK_DIV1, - evt->gpt_base + TIMER_CLK_REG(timer)); + writel(GPT_CLK_SRC(GPT_CLK_SRC_SYS13M) | GPT_CLK_DIV1, + evt->gpt_base + GPT_CLK_REG(timer)); - writel(0x0, evt->gpt_base + TIMER_CMP_REG(timer)); + writel(0x0, evt->gpt_base + GPT_CMP_REG(timer)); - writel(TIMER_CTRL_OP(option) | TIMER_CTRL_ENABLE, - evt->gpt_base + TIMER_CTRL_REG(timer)); + writel(GPT_CTRL_OP(option) | GPT_CTRL_ENABLE, + evt->gpt_base + GPT_CTRL_REG(timer)); } -static void mtk_timer_enable_irq(struct mtk_clock_event_device *evt, u8 timer) +static void mtk_gpt_enable_irq(struct mtk_clock_event_device *evt, u8 timer) { u32 val; @@ -181,7 +184,7 @@ static void mtk_timer_enable_irq(struct mtk_clock_event_device *evt, u8 timer) evt->gpt_base + GPT_IRQ_EN_REG); } -static int __init mtk_timer_init(struct device_node *node) +static int __init mtk_gpt_init(struct device_node *node) { struct mtk_clock_event_device *evt; struct resource res; @@ -195,14 +198,14 @@ static int __init mtk_timer_init(struct device_node *node) evt->dev.name = "mtk_tick"; evt->dev.rating = 300; evt->dev.features = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT; - evt->dev.set_state_shutdown = mtk_clkevt_shutdown; - evt->dev.set_state_periodic = mtk_clkevt_set_periodic; - evt->dev.set_state_oneshot = mtk_clkevt_shutdown; - evt->dev.tick_resume = mtk_clkevt_shutdown; - evt->dev.set_next_event = mtk_clkevt_next_event; + evt->dev.set_state_shutdown = mtk_gpt_clkevt_shutdown; + evt->dev.set_state_periodic = mtk_gpt_clkevt_set_periodic; + evt->dev.set_state_oneshot = mtk_gpt_clkevt_shutdown; + evt->dev.tick_resume = mtk_gpt_clkevt_shutdown; + evt->dev.set_next_event = mtk_gpt_clkevt_next_event; evt->dev.cpumask = cpu_possible_mask; - evt->gpt_base = of_io_request_and_map(node, 0, "mtk-timer"); + evt->gpt_base = of_io_request_and_map(node, 0, "mtk-timer-gpt"); if (IS_ERR(evt->gpt_base)) { pr_err("Can't get resource\n"); goto err_kzalloc; @@ -226,7 +229,7 @@ static int __init mtk_timer_init(struct device_node *node) } rate = clk_get_rate(clk); - if (request_irq(evt->dev.irq, mtk_timer_interrupt, + if (request_irq(evt->dev.irq, mtk_gpt_interrupt, IRQF_TIMER | IRQF_IRQPOLL, "mtk_timer", evt)) { pr_err("failed to setup irq %d\n", evt->dev.irq); goto err_clk_disable; @@ -235,18 +238,18 @@ static int __init mtk_timer_init(struct device_node *node) evt->ticks_per_jiffy = DIV_ROUND_UP(rate, HZ); /* Configure clock source */ - mtk_timer_setup(evt, GPT_CLK_SRC, TIMER_CTRL_OP_FREERUN); - clocksource_mmio_init(evt->gpt_base + TIMER_CNT_REG(GPT_CLK_SRC), + mtk_gpt_setup(evt, TIMER_CLK_SRC, GPT_CTRL_OP_FREERUN); + clocksource_mmio_init(evt->gpt_base + GPT_CNT_REG(TIMER_CLK_SRC), node->name, rate, 300, 32, clocksource_mmio_readl_up); - gpt_sched_reg = evt->gpt_base + TIMER_CNT_REG(GPT_CLK_SRC); - sched_clock_register(mtk_read_sched_clock, 32, rate); + gpt_sched_reg = evt->gpt_base + GPT_CNT_REG(TIMER_CLK_SRC); + sched_clock_register(mtk_gpt_read_sched_clock, 32, rate); /* Configure clock event */ - mtk_timer_setup(evt, GPT_CLK_EVT, TIMER_CTRL_OP_REPEAT); - clockevents_config_and_register(&evt->dev, rate, 0x3, + mtk_gpt_setup(evt, TIMER_CLK_EVT, GPT_CTRL_OP_REPEAT); + clockevents_config_and_register(&evt->dev, rate, TIMER_SYNC_TICKS, 0xffffffff); - mtk_timer_enable_irq(evt, GPT_CLK_EVT); + mtk_gpt_enable_irq(evt, TIMER_CLK_EVT); return 0; @@ -265,4 +268,4 @@ static int __init mtk_timer_init(struct device_node *node) return -EINVAL; } -TIMER_OF_DECLARE(mtk_mt6577, "mediatek,mt6577-timer", mtk_timer_init); +TIMER_OF_DECLARE(mtk_mt6577, "mediatek,mt6577-timer", mtk_gpt_init);