From ab277121426edca2ee0601fc6318c9467350771e Mon Sep 17 00:00:00 2001 From: Eric Miao Date: Tue, 29 Jul 2008 14:08:14 +0800 Subject: [ARM] pxa: introduce reset.h for reset specific header information Signed-off-by: Eric Miao --- arch/arm/mach-pxa/reset.c | 1 + arch/arm/mach-pxa/spitz.c | 1 + arch/arm/mach-pxa/tosa.c | 1 + 3 files changed, 3 insertions(+) (limited to 'arch/arm') diff --git a/arch/arm/mach-pxa/reset.c b/arch/arm/mach-pxa/reset.c index 9d39dea..d610a12 100644 --- a/arch/arm/mach-pxa/reset.c +++ b/arch/arm/mach-pxa/reset.c @@ -12,6 +12,7 @@ #include #include +#include static void do_hw_reset(void); diff --git a/arch/arm/mach-pxa/spitz.c b/arch/arm/mach-pxa/spitz.c index 762249c..207fe3e 100644 --- a/arch/arm/mach-pxa/spitz.c +++ b/arch/arm/mach-pxa/spitz.c @@ -39,6 +39,7 @@ #include #include #include +#include #include #include #include diff --git a/arch/arm/mach-pxa/tosa.c b/arch/arm/mach-pxa/tosa.c index fea17ce..4bd7d4f 100644 --- a/arch/arm/mach-pxa/tosa.c +++ b/arch/arm/mach-pxa/tosa.c @@ -36,6 +36,7 @@ #include #include #include +#include #include #include #include -- cgit v1.1 From 04fef228fb00dd79475a2313f4ba73b4fbfe2faa Mon Sep 17 00:00:00 2001 From: Eric Miao Date: Tue, 29 Jul 2008 14:26:00 +0800 Subject: [ARM] pxa: introduce reset_status and clear_reset_status for driver's usage Due to the problem of reset status bits being handled by different registers between pxa2xx and pxa3xx, introduce a global reset_status variable, initialized by SoC-specific code and later being used by other drivers. And also introduce clear_reset_status(), which is used to clear the corresponding status bits. Pass RESET_STATUS_ALL to clear all bits. Signed-off-by: Eric Miao --- arch/arm/mach-pxa/generic.c | 10 ++++++++++ arch/arm/mach-pxa/generic.h | 8 ++++++++ arch/arm/mach-pxa/pxa25x.c | 4 ++++ arch/arm/mach-pxa/pxa27x.c | 4 ++++ arch/arm/mach-pxa/pxa2xx.c | 9 +++++++++ arch/arm/mach-pxa/pxa3xx.c | 10 ++++++++++ arch/arm/mach-pxa/reset.c | 7 ++++--- arch/arm/mach-sa1100/generic.c | 3 +++ 8 files changed, 52 insertions(+), 3 deletions(-) (limited to 'arch/arm') diff --git a/arch/arm/mach-pxa/generic.c b/arch/arm/mach-pxa/generic.c index ca05322..3663892 100644 --- a/arch/arm/mach-pxa/generic.c +++ b/arch/arm/mach-pxa/generic.c @@ -26,9 +26,19 @@ #include #include +#include #include "generic.h" +void clear_reset_status(unsigned int mask) +{ + if (cpu_is_pxa2xx()) + pxa2xx_clear_reset_status(mask); + + if (cpu_is_pxa3xx()) + pxa3xx_clear_reset_status(mask); +} + /* * Get the clock frequency as reflected by CCCR and the turbo flag. * We assume these values have been applied via a fcs. diff --git a/arch/arm/mach-pxa/generic.h b/arch/arm/mach-pxa/generic.h index 5bb7ae7..041c048 100644 --- a/arch/arm/mach-pxa/generic.h +++ b/arch/arm/mach-pxa/generic.h @@ -47,12 +47,20 @@ extern unsigned pxa27x_get_memclk_frequency_10khz(void); #define pxa27x_get_memclk_frequency_10khz() (0) #endif +#if defined(CONFIG_PXA25x) || defined(CONFIG_PXA27x) +extern void pxa2xx_clear_reset_status(unsigned int); +#else +static inline void pxa2xx_clear_reset_status(unsigned int mask) {} +#endif + #ifdef CONFIG_PXA3xx extern unsigned pxa3xx_get_clk_frequency_khz(int); extern unsigned pxa3xx_get_memclk_frequency_10khz(void); +extern void pxa3xx_clear_reset_status(unsigned int); #else #define pxa3xx_get_clk_frequency_khz(x) (0) #define pxa3xx_get_memclk_frequency_10khz() (0) +static inline void pxa3xx_clear_reset_status(unsigned int mask) {} #endif extern struct sysdev_class pxa_irq_sysclass; diff --git a/arch/arm/mach-pxa/pxa25x.c b/arch/arm/mach-pxa/pxa25x.c index c5b845b..49a7a29 100644 --- a/arch/arm/mach-pxa/pxa25x.c +++ b/arch/arm/mach-pxa/pxa25x.c @@ -28,6 +28,7 @@ #include #include #include +#include #include #include @@ -348,6 +349,9 @@ static int __init pxa25x_init(void) clks_register(&pxa25x_hwuart_clk, 1); if (cpu_is_pxa21x() || cpu_is_pxa25x()) { + + reset_status = RCSR; + clks_register(pxa25x_clks, ARRAY_SIZE(pxa25x_clks)); if ((ret = pxa_init_dma(16))) diff --git a/arch/arm/mach-pxa/pxa27x.c b/arch/arm/mach-pxa/pxa27x.c index d5d14ea..a8c1234 100644 --- a/arch/arm/mach-pxa/pxa27x.c +++ b/arch/arm/mach-pxa/pxa27x.c @@ -24,6 +24,7 @@ #include #include #include +#include #include #include #include @@ -384,6 +385,9 @@ static int __init pxa27x_init(void) int i, ret = 0; if (cpu_is_pxa27x()) { + + reset_status = RCSR; + clks_register(pxa27x_clks, ARRAY_SIZE(pxa27x_clks)); if ((ret = pxa_init_dma(32))) diff --git a/arch/arm/mach-pxa/pxa2xx.c b/arch/arm/mach-pxa/pxa2xx.c index d4f6415..d93d3e6 100644 --- a/arch/arm/mach-pxa/pxa2xx.c +++ b/arch/arm/mach-pxa/pxa2xx.c @@ -14,10 +14,19 @@ #include #include +#include +#include #include #include +#include #include +void pxa2xx_clear_reset_status(unsigned int mask) +{ + /* RESET_STATUS_* has a 1:1 mapping with RCSR */ + RCSR = mask; +} + static unsigned long pxa2xx_mfp_fir[] = { GPIO46_FICP_RXD, GPIO47_FICP_TXD, diff --git a/arch/arm/mach-pxa/pxa3xx.c b/arch/arm/mach-pxa/pxa3xx.c index f491025..3d36c79 100644 --- a/arch/arm/mach-pxa/pxa3xx.c +++ b/arch/arm/mach-pxa/pxa3xx.c @@ -24,6 +24,7 @@ #include #include +#include #include #include #include @@ -109,6 +110,12 @@ unsigned int pxa3xx_get_memclk_frequency_10khz(void) return (clk / 10000); } +void pxa3xx_clear_reset_status(unsigned int mask) +{ + /* RESET_STATUS_* has a 1:1 mapping with ARSR */ + ARSR = mask; +} + /* * Return the current AC97 clock frequency. */ @@ -532,6 +539,9 @@ static int __init pxa3xx_init(void) int i, ret = 0; if (cpu_is_pxa3xx()) { + + reset_status = ARSR; + /* * clear RDH bit every time after reset * diff --git a/arch/arm/mach-pxa/reset.c b/arch/arm/mach-pxa/reset.c index d610a12..56f60d9 100644 --- a/arch/arm/mach-pxa/reset.c +++ b/arch/arm/mach-pxa/reset.c @@ -11,9 +11,11 @@ #include #include -#include #include +unsigned int reset_status; +EXPORT_SYMBOL(reset_status); + static void do_hw_reset(void); static int reset_gpio = -1; @@ -78,8 +80,7 @@ static void do_hw_reset(void) void arch_reset(char mode) { - if (cpu_is_pxa2xx()) - RCSR = RCSR_HWR | RCSR_WDR | RCSR_SMR | RCSR_GPR; + clear_reset_status(RESET_STATUS_ALL); switch (mode) { case 's': diff --git a/arch/arm/mach-sa1100/generic.c b/arch/arm/mach-sa1100/generic.c index 0c2fa1c..3b6fc09 100644 --- a/arch/arm/mach-sa1100/generic.c +++ b/arch/arm/mach-sa1100/generic.c @@ -31,6 +31,9 @@ #include "generic.h" +unsigned int reset_status; +EXPORT_SYMBOL(reset_status); + #define NR_FREQS 16 /* -- cgit v1.1