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Darwish" , Paul Cercueil , "Ben Dooks (Codethink)" , Matthias Brugger , Thomas Gleixner , "Daniel Lezcano" Subject: [PATCH v1 2/2] timer: mt6873: porting Mediatek timer driver to loadable module Date: Tue, 28 Jul 2020 18:16:17 +0800 Message-ID: <1595931377-21627-3-git-send-email-freddy.hsin@mediatek.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1595931377-21627-1-git-send-email-freddy.hsin@mediatek.com> References: <1595931377-21627-1-git-send-email-freddy.hsin@mediatek.com> MIME-Version: 1.0 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200728_061629_598775_BFACFFA4 X-CRM114-Status: GOOD ( 17.89 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Freddy Hsin , wsd_upstream@mediatek.com, Saravana Kannan , kuohong.wang@mediatek.com, linux-kernel@vger.kernel.org, chang-an.chen@mediatek.com, Baolin Wang , stanley.chu@mediatek.com Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org porting Mediatek timer driver to loadable module Signed-off-by: Freddy Hsin --- 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 #include #include +#include +#include +#include #include #include #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 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel