From 7e5bac610d2fd4d270adfd2d70ce766df1711bf8 Mon Sep 17 00:00:00 2001 From: Mans Rullgard Date: Fri, 30 Jun 2023 21:01:28 +0100 Subject: clocksource/drivers/sun5i: Convert to platform device driver Convert the sun5i hstimer driver to a platform device driver. This makes it work again on A20 and other systems where the clock is provided by a platform device driver. Fixes: 7ec03b588d22 ("clk: sunxi-ng: Convert early providers to platform drivers") Signed-off-by: Mans Rullgard Acked-by: Jernej Skrabec Acked-by: Maxime Ripard Signed-off-by: Daniel Lezcano Link: https://lore.kernel.org/r/20230630201800.16501-4-mans@mansr.com --- drivers/clocksource/timer-sun5i.c | 121 ++++++++++++++++++++++---------------- 1 file changed, 69 insertions(+), 52 deletions(-) (limited to 'drivers/clocksource/timer-sun5i.c') diff --git a/drivers/clocksource/timer-sun5i.c b/drivers/clocksource/timer-sun5i.c index 3ca427e54daf..69fee3540d37 100644 --- a/drivers/clocksource/timer-sun5i.c +++ b/drivers/clocksource/timer-sun5i.c @@ -16,9 +16,7 @@ #include #include #include -#include -#include -#include +#include #define TIMER_IRQ_EN_REG 0x00 #define TIMER_IRQ_EN(val) BIT(val) @@ -171,10 +169,10 @@ static int sun5i_rate_cb(struct notifier_block *nb, return NOTIFY_DONE; } -static int __init sun5i_setup_clocksource(struct device_node *node, - struct sun5i_timer *cs, - unsigned long rate) +static int sun5i_setup_clocksource(struct platform_device *pdev, + unsigned long rate) { + struct sun5i_timer *cs = platform_get_drvdata(pdev); void __iomem *base = cs->base; int ret; @@ -182,7 +180,7 @@ static int __init sun5i_setup_clocksource(struct device_node *node, writel(TIMER_CTL_ENABLE | TIMER_CTL_RELOAD, base + TIMER_CTL_REG(1)); - cs->clksrc.name = node->name; + cs->clksrc.name = pdev->dev.of_node->name; cs->clksrc.rating = 340; cs->clksrc.read = sun5i_clksrc_read; cs->clksrc.mask = CLOCKSOURCE_MASK(32); @@ -190,22 +188,23 @@ static int __init sun5i_setup_clocksource(struct device_node *node, ret = clocksource_register_hz(&cs->clksrc, rate); if (ret) { - pr_err("Couldn't register clock source.\n"); + dev_err(&pdev->dev, "Couldn't register clock source.\n"); return ret; } return 0; } -static int __init sun5i_setup_clockevent(struct device_node *node, - struct sun5i_timer *ce, - unsigned long rate, int irq) +static int sun5i_setup_clockevent(struct platform_device *pdev, + unsigned long rate, int irq) { + struct device *dev = &pdev->dev; + struct sun5i_timer *ce = platform_get_drvdata(pdev); void __iomem *base = ce->base; int ret; u32 val; - ce->clkevt.name = node->name; + ce->clkevt.name = dev->of_node->name; ce->clkevt.features = CLOCK_EVT_FEAT_PERIODIC | CLOCK_EVT_FEAT_ONESHOT; ce->clkevt.set_next_event = sun5i_clkevt_next_event; ce->clkevt.set_state_shutdown = sun5i_clkevt_shutdown; @@ -223,18 +222,20 @@ static int __init sun5i_setup_clockevent(struct device_node *node, clockevents_config_and_register(&ce->clkevt, rate, TIMER_SYNC_TICKS, 0xffffffff); - ret = request_irq(irq, sun5i_timer_interrupt, IRQF_TIMER | IRQF_IRQPOLL, - "sun5i_timer0", ce); + ret = devm_request_irq(dev, irq, sun5i_timer_interrupt, + IRQF_TIMER | IRQF_IRQPOLL, + "sun5i_timer0", ce); if (ret) { - pr_err("Unable to register interrupt\n"); + dev_err(dev, "Unable to register interrupt\n"); return ret; } return 0; } -static int __init sun5i_timer_init(struct device_node *node) +static int sun5i_timer_probe(struct platform_device *pdev) { + struct device *dev = &pdev->dev; struct sun5i_timer *st; struct reset_control *rstc; void __iomem *timer_base; @@ -242,39 +243,34 @@ static int __init sun5i_timer_init(struct device_node *node) unsigned long rate; int irq, ret; - st = kzalloc(sizeof(*st), GFP_KERNEL); + st = devm_kzalloc(dev, sizeof(*st), GFP_KERNEL); if (!st) return -ENOMEM; - timer_base = of_io_request_and_map(node, 0, of_node_full_name(node)); + platform_set_drvdata(pdev, st); + + timer_base = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(timer_base)) { - pr_err("Can't map registers\n"); + dev_err(dev, "Can't map registers\n"); return PTR_ERR(timer_base); } - irq = irq_of_parse_and_map(node, 0); - if (irq <= 0) { - pr_err("Can't parse IRQ\n"); - return -EINVAL; + irq = platform_get_irq(pdev, 0); + if (irq < 0) { + dev_err(dev, "Can't get IRQ\n"); + return irq; } - clk = of_clk_get(node, 0); + clk = devm_clk_get_enabled(dev, NULL); if (IS_ERR(clk)) { - pr_err("Can't get timer clock\n"); + dev_err(dev, "Can't get timer clock\n"); return PTR_ERR(clk); } - ret = clk_prepare_enable(clk); - if (ret) { - pr_err("Couldn't enable parent clock\n"); - goto err_free; - } - rate = clk_get_rate(clk); if (!rate) { - pr_err("Couldn't get parent clock rate\n"); - ret = -EINVAL; - goto err_disable_clk; + dev_err(dev, "Couldn't get parent clock rate\n"); + return -EINVAL; } st->base = timer_base; @@ -283,31 +279,52 @@ static int __init sun5i_timer_init(struct device_node *node) st->clk_rate_cb.notifier_call = sun5i_rate_cb; st->clk_rate_cb.next = NULL; - ret = clk_notifier_register(clk, &st->clk_rate_cb); + ret = devm_clk_notifier_register(dev, clk, &st->clk_rate_cb); if (ret) { - pr_err("Unable to register clock notifier.\n"); - goto err_disable_clk; + dev_err(dev, "Unable to register clock notifier.\n"); + return ret; } - rstc = of_reset_control_get(node, NULL); - if (!IS_ERR(rstc)) + rstc = devm_reset_control_get_optional_exclusive(dev, NULL); + if (rstc) reset_control_deassert(rstc); - ret = sun5i_setup_clocksource(node, st, rate); + ret = sun5i_setup_clocksource(pdev, rate); + if (ret) + return ret; + + ret = sun5i_setup_clockevent(pdev, rate, irq); if (ret) - goto err_remove_notifier; + goto err_unreg_clocksource; - return sun5i_setup_clockevent(node, st, rate, irq); + return 0; -err_remove_notifier: - clk_notifier_unregister(clk, &st->clk_rate_cb); -err_disable_clk: - clk_disable_unprepare(clk); -err_free: - kfree(st); +err_unreg_clocksource: + clocksource_unregister(&st->clksrc); return ret; } -TIMER_OF_DECLARE(sun5i_a13, "allwinner,sun5i-a13-hstimer", - sun5i_timer_init); -TIMER_OF_DECLARE(sun7i_a20, "allwinner,sun7i-a20-hstimer", - sun5i_timer_init); + +static void sun5i_timer_remove(struct platform_device *pdev) +{ + struct sun5i_timer *st = platform_get_drvdata(pdev); + + clocksource_unregister(&st->clksrc); +} + +static const struct of_device_id sun5i_timer_of_match[] = { + { .compatible = "allwinner,sun5i-a13-hstimer" }, + { .compatible = "allwinner,sun7i-a20-hstimer" }, + {}, +}; +MODULE_DEVICE_TABLE(of, sun5i_timer_of_match); + +static struct platform_driver sun5i_timer_driver = { + .probe = sun5i_timer_probe, + .remove_new = sun5i_timer_remove, + .driver = { + .name = "sun5i-timer", + .of_match_table = sun5i_timer_of_match, + .suppress_bind_attrs = true, + }, +}; +module_platform_driver(sun5i_timer_driver); -- cgit v1.2.3