Messages in this thread Patch in this message | | | From | Freddy Hsin <> | Subject | [PATCH v1 2/2] timer: mt6873: porting Mediatek timer driver to loadable module | Date | Tue, 28 Jul 2020 18:16:17 +0800 |
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porting Mediatek timer driver to loadable module
Signed-off-by: Freddy Hsin <freddy.hsin@mediatek.com> --- drivers/clocksource/Kconfig | 2 +- drivers/clocksource/mmio.c | 4 +++- drivers/clocksource/timer-mediatek.c | 39 ++++++++++++++++++++++++++++++++++ 3 files changed, 43 insertions(+), 2 deletions(-)
diff --git a/drivers/clocksource/Kconfig b/drivers/clocksource/Kconfig index 9141838..538351a 100644 --- a/drivers/clocksource/Kconfig +++ b/drivers/clocksource/Kconfig @@ -472,7 +472,7 @@ config SYS_SUPPORTS_SH_CMT bool config MTK_TIMER - bool "Mediatek timer driver" if COMPILE_TEST + tristate "Mediatek timer driver" depends on HAS_IOMEM select TIMER_OF select CLKSRC_MMIO diff --git a/drivers/clocksource/mmio.c b/drivers/clocksource/mmio.c index 9de7515..5504569 100644 --- a/drivers/clocksource/mmio.c +++ b/drivers/clocksource/mmio.c @@ -21,6 +21,7 @@ u64 clocksource_mmio_readl_up(struct clocksource *c) { return (u64)readl_relaxed(to_mmio_clksrc(c)->reg); } +EXPORT_SYMBOL(clocksource_mmio_readl_up); u64 clocksource_mmio_readl_down(struct clocksource *c) { @@ -46,7 +47,7 @@ u64 clocksource_mmio_readw_down(struct clocksource *c) * @bits: Number of valid bits * @read: One of clocksource_mmio_read*() above */ -int __init clocksource_mmio_init(void __iomem *base, const char *name, +int clocksource_mmio_init(void __iomem *base, const char *name, unsigned long hz, int rating, unsigned bits, u64 (*read)(struct clocksource *)) { @@ -68,3 +69,4 @@ int __init clocksource_mmio_init(void __iomem *base, const char *name, return clocksource_register_hz(&cs->clksrc, hz); } +EXPORT_SYMBOL(clocksource_mmio_init); diff --git a/drivers/clocksource/timer-mediatek.c b/drivers/clocksource/timer-mediatek.c index 9318edc..5c89b6b 100644 --- a/drivers/clocksource/timer-mediatek.c +++ b/drivers/clocksource/timer-mediatek.c @@ -13,6 +13,9 @@ #include <linux/clocksource.h> #include <linux/interrupt.h> #include <linux/irqreturn.h> +#include <linux/module.h> +#include <linux/of_device.h> +#include <linux/platform_device.h> #include <linux/sched_clock.h> #include <linux/slab.h> #include "timer-of.h" @@ -309,5 +312,41 @@ static int __init mtk_gpt_init(struct device_node *node) return 0; } + +#ifdef MODULE +static int mtk_timer_probe(struct platform_device *pdev) +{ + int (*timer_init)(struct device_node *node); + struct device_node *np = pdev->dev.of_node; + + timer_init = of_device_get_match_data(&pdev->dev); + return timer_init(np); +} + +static const struct of_device_id mtk_timer_match_table[] = { + { + .compatible = "mediatek,mt6577-timer", + .data = mtk_gpt_init, + }, + { + .compatible = "mediatek,mt6765-timer", + .data = mtk_syst_init, + }, + {} +}; + +static struct platform_driver mtk_timer_driver = { + .probe = mtk_timer_probe, + .driver = { + .name = "mtk-timer", + .of_match_table = mtk_timer_match_table, + }, +}; +MODULE_DESCRIPTION("MEDIATEK Module timer driver"); +MODULE_LICENSE("GPL v2"); + +module_platform_driver(mtk_timer_driver); +#else TIMER_OF_DECLARE(mtk_mt6577, "mediatek,mt6577-timer", mtk_gpt_init); TIMER_OF_DECLARE(mtk_mt6765, "mediatek,mt6765-timer", mtk_syst_init); +#endif -- 1.7.9.5 | |