From 03f5b2cee6cabd0400b9f89956c373a0b5d3802a Mon Sep 17 00:00:00 2001 From: Russell King Date: Thu, 8 Nov 2007 11:17:19 +0000 Subject: [ARM] pxa: avoid always registering MMC, I2C, IrDA and framebuffer devices Only register the MMC, framebuffer, I2C and FICP devices when the platform supplies the necessary platform data structures for the devices. Signed-off-by: Russell King --- arch/arm/mach-pxa/pxa25x.c | 4 ---- 1 file changed, 4 deletions(-) (limited to 'arch/arm/mach-pxa/pxa25x.c') diff --git a/arch/arm/mach-pxa/pxa25x.c b/arch/arm/mach-pxa/pxa25x.c index 9732d5d9466b..d9ee0d9b36df 100644 --- a/arch/arm/mach-pxa/pxa25x.c +++ b/arch/arm/mach-pxa/pxa25x.c @@ -287,15 +287,11 @@ void __init pxa25x_init_irq(void) } static struct platform_device *pxa25x_devices[] __initdata = { - &pxa_device_mci, &pxa_device_udc, - &pxa_device_fb, &pxa_device_ffuart, &pxa_device_btuart, &pxa_device_stuart, - &pxa_device_i2c, &pxa_device_i2s, - &pxa_device_ficp, &pxa_device_rtc, }; -- cgit v1.2.3 From d8e0db1111b51558456466f66c9115d71b68e8b9 Mon Sep 17 00:00:00 2001 From: eric miao Date: Mon, 10 Dec 2007 17:54:36 +0800 Subject: [ARM] pxa: add ssp devices and clk support for pxa25x/pxa27x/pxa3xx Signed-off-by: eric miao Signed-off-by: Russell King --- arch/arm/mach-pxa/pxa25x.c | 10 ++++++++-- arch/arm/mach-pxa/pxa27x.c | 10 +++++++--- arch/arm/mach-pxa/pxa3xx.c | 9 +++++++++ 3 files changed, 24 insertions(+), 5 deletions(-) (limited to 'arch/arm/mach-pxa/pxa25x.c') diff --git a/arch/arm/mach-pxa/pxa25x.c b/arch/arm/mach-pxa/pxa25x.c index d9ee0d9b36df..c6ea0ed69270 100644 --- a/arch/arm/mach-pxa/pxa25x.c +++ b/arch/arm/mach-pxa/pxa25x.c @@ -120,12 +120,15 @@ static struct clk pxa25x_clks[] = { INIT_CKEN("UDCCLK", USB, 47923000, 5, &pxa_device_udc.dev), INIT_CKEN("MMCCLK", MMC, 19169000, 0, &pxa_device_mci.dev), INIT_CKEN("I2CCLK", I2C, 31949000, 0, &pxa_device_i2c.dev), + + INIT_CKEN("SSPCLK", SSP, 3686400, 0, &pxa25x_device_ssp.dev), + INIT_CKEN("SSPCLK", NSSP, 3686400, 0, &pxa25x_device_nssp.dev), + INIT_CKEN("SSPCLK", ASSP, 3686400, 0, &pxa25x_device_assp.dev), + /* INIT_CKEN("PWMCLK", PWM0, 3686400, 0, NULL), INIT_CKEN("PWMCLK", PWM0, 3686400, 0, NULL), - INIT_CKEN("SSPCLK", SSP, 3686400, 0, NULL), INIT_CKEN("I2SCLK", I2S, 14745600, 0, NULL), - INIT_CKEN("NSSPCLK", NSSP, 3686400, 0, NULL), */ INIT_CKEN("FICPCLK", FICP, 47923000, 0, NULL), }; @@ -293,6 +296,9 @@ static struct platform_device *pxa25x_devices[] __initdata = { &pxa_device_stuart, &pxa_device_i2s, &pxa_device_rtc, + &pxa25x_device_ssp, + &pxa25x_device_nssp, + &pxa25x_device_assp, }; static int __init pxa25x_init(void) diff --git a/arch/arm/mach-pxa/pxa27x.c b/arch/arm/mach-pxa/pxa27x.c index e7151dba6682..12dd2b0629bf 100644 --- a/arch/arm/mach-pxa/pxa27x.c +++ b/arch/arm/mach-pxa/pxa27x.c @@ -150,11 +150,12 @@ static struct clk pxa27x_clks[] = { INIT_CKEN("I2CCLK", PWRI2C, 13000000, 0, &pxa27x_device_i2c_power.dev), INIT_CKEN("KBDCLK", KEYPAD, 32768, 0, NULL), + INIT_CKEN("SSPCLK", SSP1, 13000000, 0, &pxa27x_device_ssp1.dev), + INIT_CKEN("SSPCLK", SSP2, 13000000, 0, &pxa27x_device_ssp2.dev), + INIT_CKEN("SSPCLK", SSP3, 13000000, 0, &pxa27x_device_ssp3.dev), + /* INIT_CKEN("PWMCLK", PWM0, 13000000, 0, NULL), - INIT_CKEN("SSPCLK", SSP1, 13000000, 0, NULL), - INIT_CKEN("SSPCLK", SSP2, 13000000, 0, NULL), - INIT_CKEN("SSPCLK", SSP3, 13000000, 0, NULL), INIT_CKEN("MSLCLK", MSL, 48000000, 0, NULL), INIT_CKEN("USIMCLK", USIM, 48000000, 0, NULL), INIT_CKEN("MSTKCLK", MEMSTK, 19500000, 0, NULL), @@ -431,6 +432,9 @@ static struct platform_device *devices[] __initdata = { &pxa_device_i2s, &pxa_device_rtc, &pxa27x_device_i2c_power, + &pxa27x_device_ssp1, + &pxa27x_device_ssp2, + &pxa27x_device_ssp3, }; static int __init pxa27x_init(void) diff --git a/arch/arm/mach-pxa/pxa3xx.c b/arch/arm/mach-pxa/pxa3xx.c index 37fbc4face09..c0483c3261d0 100644 --- a/arch/arm/mach-pxa/pxa3xx.c +++ b/arch/arm/mach-pxa/pxa3xx.c @@ -189,6 +189,11 @@ static struct clk pxa3xx_clks[] = { PXA3xx_CKEN("I2CCLK", I2C, 32842000, 0, &pxa_device_i2c.dev), PXA3xx_CKEN("UDCCLK", UDC, 48000000, 5, &pxa_device_udc.dev), + + PXA3xx_CKEN("SSPCLK", SSP1, 13000000, 0, &pxa27x_device_ssp1.dev), + PXA3xx_CKEN("SSPCLK", SSP2, 13000000, 0, &pxa27x_device_ssp2.dev), + PXA3xx_CKEN("SSPCLK", SSP3, 13000000, 0, &pxa27x_device_ssp3.dev), + PXA3xx_CKEN("SSPCLK", SSP4, 13000000, 0, &pxa3xx_device_ssp4.dev), }; void __init pxa3xx_init_irq(void) @@ -215,6 +220,10 @@ static struct platform_device *devices[] __initdata = { &pxa_device_stuart, &pxa_device_i2s, &pxa_device_rtc, + &pxa27x_device_ssp1, + &pxa27x_device_ssp2, + &pxa27x_device_ssp3, + &pxa3xx_device_ssp4, }; static int __init pxa3xx_init(void) -- cgit v1.2.3 From f79299ca85f6f8c8817bc38494f7caa0a7043c3b Mon Sep 17 00:00:00 2001 From: eric miao Date: Wed, 2 Jan 2008 08:24:49 +0800 Subject: [ARM] pxa: clean up pxa{27x,25x}_init_pm() to empty if CONFIG_PM not defined Signed-off-by: eric miao Signed-off-by: Russell King --- arch/arm/mach-pxa/pxa25x.c | 6 ++++-- arch/arm/mach-pxa/pxa27x.c | 6 ++++-- 2 files changed, 8 insertions(+), 4 deletions(-) (limited to 'arch/arm/mach-pxa/pxa25x.c') diff --git a/arch/arm/mach-pxa/pxa25x.c b/arch/arm/mach-pxa/pxa25x.c index c6ea0ed69270..962cfbb5500e 100644 --- a/arch/arm/mach-pxa/pxa25x.c +++ b/arch/arm/mach-pxa/pxa25x.c @@ -239,6 +239,8 @@ static void __init pxa25x_init_pm(void) { pxa_cpu_pm_fns = &pxa25x_cpu_pm_fns; } +#else +static inline void pxa25x_init_pm(void) {} #endif /* PXA25x: supports wakeup from GPIO0..GPIO15 and RTC alarm @@ -310,9 +312,9 @@ static int __init pxa25x_init(void) if ((ret = pxa_init_dma(16))) return ret; -#ifdef CONFIG_PM + pxa25x_init_pm(); -#endif + ret = platform_add_devices(pxa25x_devices, ARRAY_SIZE(pxa25x_devices)); } diff --git a/arch/arm/mach-pxa/pxa27x.c b/arch/arm/mach-pxa/pxa27x.c index b9fa5ec0a954..f33c9d7ff87e 100644 --- a/arch/arm/mach-pxa/pxa27x.c +++ b/arch/arm/mach-pxa/pxa27x.c @@ -306,6 +306,8 @@ static void __init pxa27x_init_pm(void) { pxa_cpu_pm_fns = &pxa27x_cpu_pm_fns; } +#else +static inline void pxa27x_init_pm(void) {} #endif /* PXA27x: Various gpios can issue wakeup events. This logic only @@ -415,9 +417,9 @@ static int __init pxa27x_init(void) if ((ret = pxa_init_dma(32))) return ret; -#ifdef CONFIG_PM + pxa27x_init_pm(); -#endif + ret = platform_add_devices(devices, ARRAY_SIZE(devices)); } return ret; -- cgit v1.2.3 From fd8e7af8d0fd3febc87607214d5dd545089edc71 Mon Sep 17 00:00:00 2001 From: Russell King Date: Wed, 23 Jan 2008 12:33:31 +0000 Subject: [ARM] pxa: Avoid fiddling with CKEN register on suspend The PXA manuals indicate that when in standby or sleep modes, clocks to peripherals are shut off by the processor itself. Eg: PXA270 standby: "In standby mode, all clocks are disabled except those for the power manager and the RTC." PXA270 sleep: "In sleep mode, all clocks are disabled to the processor and to all peripherals except the RTC." PXA255 sleep: "In Sleep Mode, all processor and peripheral clocks are disabled, except the RTC." Therefore, it should be safe to leave the clock enable register alone prior to entering low power modes for these SoCs. Signed-off-by: Russell King --- arch/arm/mach-pxa/pxa25x.c | 2 -- arch/arm/mach-pxa/pxa27x.c | 6 ------ 2 files changed, 8 deletions(-) (limited to 'arch/arm/mach-pxa/pxa25x.c') diff --git a/arch/arm/mach-pxa/pxa25x.c b/arch/arm/mach-pxa/pxa25x.c index 962cfbb5500e..73a5f068e167 100644 --- a/arch/arm/mach-pxa/pxa25x.c +++ b/arch/arm/mach-pxa/pxa25x.c @@ -216,8 +216,6 @@ static void pxa25x_cpu_pm_restore(unsigned long *sleep_save) static void pxa25x_cpu_pm_enter(suspend_state_t state) { - CKEN = 0; - switch (state) { case PM_SUSPEND_MEM: /* set resume return address */ diff --git a/arch/arm/mach-pxa/pxa27x.c b/arch/arm/mach-pxa/pxa27x.c index f33c9d7ff87e..db0c4c6fea9b 100644 --- a/arch/arm/mach-pxa/pxa27x.c +++ b/arch/arm/mach-pxa/pxa27x.c @@ -265,12 +265,6 @@ void pxa27x_cpu_pm_enter(suspend_state_t state) { extern void pxa_cpu_standby(void); - if (state == PM_SUSPEND_STANDBY) - CKEN = (1 << CKEN_MEMC) | (1 << CKEN_OSTIMER) | - (1 << CKEN_LCD) | (1 << CKEN_PWM0); - else - CKEN = (1 << CKEN_MEMC) | (1 << CKEN_OSTIMER); - /* ensure voltage-change sequencer not initiated, which hangs */ PCFR &= ~PCFR_FVC; -- cgit v1.2.3