From: Sascha Hauer Date: Mon, 16 Feb 2009 13:36:49 +0000 (+0100) Subject: [ARM] MXC: rework timer/clock initialisation X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=30c730f8f90b08d77a73998d2ee34cf1f56e95cc;p=openwrt%2Fstaging%2Fblogic.git [ARM] MXC: rework timer/clock initialisation - rename mxc_clocks_init to architecture specific versions. This allows us to have more than one architecture compiled in. - call mxc_timer_init from clock initialisation instead from board code Signed-off-by: Sascha Hauer --- diff --git a/arch/arm/mach-mx1/clock.c b/arch/arm/mach-mx1/clock.c index 3c464331b870..40a2274380a3 100644 --- a/arch/arm/mach-mx1/clock.c +++ b/arch/arm/mach-mx1/clock.c @@ -25,6 +25,7 @@ #include #include +#include #include "crm_regs.h" static int _clk_enable(struct clk *clk) @@ -594,7 +595,7 @@ static struct clk *mxc_clks[] = { &rtc_clk, }; -int __init mxc_clocks_init(unsigned long fref) +int __init mx1_clocks_init(unsigned long fref) { struct clk **clkp; unsigned int reg; @@ -625,5 +626,7 @@ int __init mxc_clocks_init(unsigned long fref) clk_enable(&hclk); clk_enable(&fclk); + mxc_timer_init(&gpt_clk); + return 0; } diff --git a/arch/arm/mach-mx1/mx1ads.c b/arch/arm/mach-mx1/mx1ads.c index be7dd75ebbe1..09dc77bb4812 100644 --- a/arch/arm/mach-mx1/mx1ads.c +++ b/arch/arm/mach-mx1/mx1ads.c @@ -118,8 +118,7 @@ static void __init mx1ads_init(void) static void __init mx1ads_timer_init(void) { - mxc_clocks_init(32000); - mxc_timer_init("gpt_clk"); + mx1_clocks_init(32000); } struct sys_timer mx1ads_timer = { diff --git a/arch/arm/mach-mx2/clock_imx27.c b/arch/arm/mach-mx2/clock_imx27.c index 047e71e6ea9a..7b2c1122d9ab 100644 --- a/arch/arm/mach-mx2/clock_imx27.c +++ b/arch/arm/mach-mx2/clock_imx27.c @@ -1551,7 +1551,7 @@ static void __init probe_mxc_clocks(void) * must be called very early to get information about the * available clock rate when the timer framework starts */ -int __init mxc_clocks_init(unsigned long fref) +int __init mx27_clocks_init(unsigned long fref) { u32 cscr; struct clk **clkp; @@ -1593,5 +1593,8 @@ int __init mxc_clocks_init(unsigned long fref) #ifdef CONFIG_DEBUG_LL_CONSOLE clk_enable(&uart1_clk[0]); #endif + + mxc_timer_init(&gpt1_clk[0]); + return 0; } diff --git a/arch/arm/mach-mx2/mx27ads.c b/arch/arm/mach-mx2/mx27ads.c index 7721c470d5ab..536bf64bc7c8 100644 --- a/arch/arm/mach-mx2/mx27ads.c +++ b/arch/arm/mach-mx2/mx27ads.c @@ -263,8 +263,7 @@ static void __init mx27ads_timer_init(void) if ((__raw_readw(PBC_VERSION_REG) & CKIH_27MHZ_BIT_SET) == 0) fref = 27000000; - mxc_clocks_init(fref); - mxc_timer_init("gpt_clk.0"); + mx27_clocks_init(fref); } struct sys_timer mx27ads_timer = { diff --git a/arch/arm/mach-mx2/pcm038.c b/arch/arm/mach-mx2/pcm038.c index 534fd9a4ff9f..63cdef8565db 100644 --- a/arch/arm/mach-mx2/pcm038.c +++ b/arch/arm/mach-mx2/pcm038.c @@ -230,8 +230,7 @@ static void __init pcm038_init(void) static void __init pcm038_timer_init(void) { - mxc_clocks_init(26000000); - mxc_timer_init("gpt_clk.0"); + mx27_clocks_init(26000000); } struct sys_timer pcm038_timer = { diff --git a/arch/arm/mach-mx3/clock.c b/arch/arm/mach-mx3/clock.c index 8486ea46d6c1..8b41facb391b 100644 --- a/arch/arm/mach-mx3/clock.c +++ b/arch/arm/mach-mx3/clock.c @@ -25,6 +25,7 @@ #include #include #include +#include #include #include "crm_regs.h" @@ -1071,7 +1072,7 @@ static struct clk *mxc_clks[] = { &iim_clk, }; -int __init mxc_clocks_init(unsigned long fref) +int __init mx31_clocks_init(unsigned long fref) { u32 reg; struct clk **clkp; @@ -1121,6 +1122,8 @@ int __init mxc_clocks_init(unsigned long fref) __raw_writel(reg, MXC_CCM_PMCR1); } + mxc_timer_init(&ipg_clk); + return 0; } diff --git a/arch/arm/mach-mx3/mx31ads.c b/arch/arm/mach-mx3/mx31ads.c index f902a7c37c31..f913999eedf0 100644 --- a/arch/arm/mach-mx3/mx31ads.c +++ b/arch/arm/mach-mx3/mx31ads.c @@ -244,8 +244,7 @@ static void __init mxc_board_init(void) static void __init mx31ads_timer_init(void) { - mxc_clocks_init(26000000); - mxc_timer_init("ipg_clk.0"); + mx31_clocks_init(26000000); } struct sys_timer mx31ads_timer = { diff --git a/arch/arm/mach-mx3/mx31lite.c b/arch/arm/mach-mx3/mx31lite.c index c43440070143..e61fad2f60f3 100644 --- a/arch/arm/mach-mx3/mx31lite.c +++ b/arch/arm/mach-mx3/mx31lite.c @@ -82,8 +82,7 @@ static void __init mxc_board_init(void) static void __init mx31lite_timer_init(void) { - mxc_clocks_init(26000000); - mxc_timer_init("ipg_clk.0"); + mx31_clocks_init(26000000); } struct sys_timer mx31lite_timer = { diff --git a/arch/arm/mach-mx3/mx31moboard.c b/arch/arm/mach-mx3/mx31moboard.c index c29098af7394..3d2773e4bc81 100644 --- a/arch/arm/mach-mx3/mx31moboard.c +++ b/arch/arm/mach-mx3/mx31moboard.c @@ -120,8 +120,7 @@ void __init mx31moboard_map_io(void) static void __init mx31moboard_timer_init(void) { - mxc_clocks_init(26000000); - mxc_timer_init("ipg_clk.0"); + mx31_clocks_init(26000000); } struct sys_timer mx31moboard_timer = { diff --git a/arch/arm/mach-mx3/mx31pdk.c b/arch/arm/mach-mx3/mx31pdk.c index d464d068a4a6..ac427edb4db1 100644 --- a/arch/arm/mach-mx3/mx31pdk.c +++ b/arch/arm/mach-mx3/mx31pdk.c @@ -91,8 +91,7 @@ static void __init mxc_board_init(void) static void __init mx31pdk_timer_init(void) { - mxc_clocks_init(26000000); - mxc_timer_init("ipg_clk.0"); + mx31_clocks_init(26000000); } static struct sys_timer mx31pdk_timer = { diff --git a/arch/arm/mach-mx3/pcm037.c b/arch/arm/mach-mx3/pcm037.c index 8cea82587222..3b5ba551cb14 100644 --- a/arch/arm/mach-mx3/pcm037.c +++ b/arch/arm/mach-mx3/pcm037.c @@ -181,8 +181,7 @@ void __init pcm037_map_io(void) static void __init pcm037_timer_init(void) { - mxc_clocks_init(26000000); - mxc_timer_init("ipg_clk.0"); + mx31_clocks_init(26000000); } struct sys_timer pcm037_timer = { diff --git a/arch/arm/plat-mxc/include/mach/common.h b/arch/arm/plat-mxc/include/mach/common.h index 6350287a59b9..2c08b8e14e39 100644 --- a/arch/arm/plat-mxc/include/mach/common.h +++ b/arch/arm/plat-mxc/include/mach/common.h @@ -12,11 +12,14 @@ #define __ASM_ARCH_MXC_COMMON_H__ struct platform_device; +struct clk; extern void mxc_map_io(void); extern void mxc_init_irq(void); -extern void mxc_timer_init(const char *clk_timer); -extern int mxc_clocks_init(unsigned long fref); +extern void mxc_timer_init(struct clk *timer_clk); +extern int mx1_clocks_init(unsigned long fref); +extern int mx27_clocks_init(unsigned long fref); +extern int mx31_clocks_init(unsigned long fref); extern int mxc_register_gpios(void); extern int mxc_register_device(struct platform_device *pdev, void *data); diff --git a/arch/arm/plat-mxc/time.c b/arch/arm/plat-mxc/time.c index 758a1293bcfa..eb93fd1789db 100644 --- a/arch/arm/plat-mxc/time.c +++ b/arch/arm/plat-mxc/time.c @@ -34,9 +34,6 @@ static struct clock_event_device clockevent_mxc; static enum clock_event_mode clockevent_mode = CLOCK_EVT_MODE_UNUSED; -/* clock source for the timer */ -static struct clk *timer_clk; - /* clock source */ static cycle_t mxc_get_cycles(void) @@ -53,7 +50,7 @@ static struct clocksource clocksource_mxc = { .flags = CLOCK_SOURCE_IS_CONTINUOUS, }; -static int __init mxc_clocksource_init(void) +static int __init mxc_clocksource_init(struct clk *timer_clk) { unsigned int clock; @@ -177,7 +174,7 @@ static struct clock_event_device clockevent_mxc = { .rating = 200, }; -static int __init mxc_clockevent_init(void) +static int __init mxc_clockevent_init(struct clk *timer_clk) { unsigned int clock; @@ -197,14 +194,8 @@ static int __init mxc_clockevent_init(void) return 0; } -void __init mxc_timer_init(const char *clk_timer) +void __init mxc_timer_init(struct clk *timer_clk) { - timer_clk = clk_get(NULL, clk_timer); - if (!timer_clk) { - printk(KERN_ERR"Cannot determine timer clock. Giving up.\n"); - return; - } - clk_enable(timer_clk); /* @@ -219,10 +210,9 @@ void __init mxc_timer_init(const char *clk_timer) TIMER_BASE + MXC_TCTL); /* init and register the timer to the framework */ - mxc_clocksource_init(); - mxc_clockevent_init(); + mxc_clocksource_init(timer_clk); + mxc_clockevent_init(timer_clk); /* Make irqs happen */ setup_irq(TIMER_INTERRUPT, &mxc_timer_irq); } -