diff options
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/mach-pxa/Kconfig | 7 | ||||
| -rw-r--r-- | arch/arm/mach-pxa/Makefile | 5 | ||||
| -rw-r--r-- | arch/arm/mach-pxa/corgi_ssp.c | 2 | ||||
| -rw-r--r-- | arch/arm/mach-pxa/ssp.c | 128 |
4 files changed, 51 insertions, 91 deletions
diff --git a/arch/arm/mach-pxa/Kconfig b/arch/arm/mach-pxa/Kconfig index b380a438e68f..e201aa9765b9 100644 --- a/arch/arm/mach-pxa/Kconfig +++ b/arch/arm/mach-pxa/Kconfig @@ -60,6 +60,7 @@ config MACH_CORGI bool "Enable Sharp SL-C700 (Corgi) Support" depends PXA_SHARPSL_25x select PXA_SHARP_C7xx + select PXA_SSP config MACH_SHEPHERD bool "Enable Sharp SL-C750 (Shepherd) Support" @@ -102,12 +103,18 @@ config IWMMXT config PXA_SHARP_C7xx bool + select PXA_SSP help Enable support for all Sharp C7xx models config PXA_SHARP_Cxx00 bool + select PXA_SSP help Enable common support for Sharp Cxx00 models +config PXA_SSP + tristate + help + Enable support for PXA2xx SSP ports endif diff --git a/arch/arm/mach-pxa/Makefile b/arch/arm/mach-pxa/Makefile index 8bc72d07cea8..d210bd5032ce 100644 --- a/arch/arm/mach-pxa/Makefile +++ b/arch/arm/mach-pxa/Makefile @@ -11,8 +11,8 @@ obj-$(CONFIG_PXA27x) += pxa27x.o obj-$(CONFIG_ARCH_LUBBOCK) += lubbock.o obj-$(CONFIG_MACH_MAINSTONE) += mainstone.o obj-$(CONFIG_ARCH_PXA_IDP) += idp.o -obj-$(CONFIG_PXA_SHARP_C7xx) += corgi.o corgi_ssp.o corgi_lcd.o ssp.o -obj-$(CONFIG_PXA_SHARP_Cxx00) += spitz.o corgi_ssp.o corgi_lcd.o ssp.o +obj-$(CONFIG_PXA_SHARP_C7xx) += corgi.o corgi_ssp.o corgi_lcd.o +obj-$(CONFIG_PXA_SHARP_Cxx00) += spitz.o corgi_ssp.o corgi_lcd.o obj-$(CONFIG_MACH_POODLE) += poodle.o obj-$(CONFIG_MACH_TOSA) += tosa.o @@ -26,6 +26,7 @@ obj-$(CONFIG_LEDS) += $(led-y) # Misc features obj-$(CONFIG_PM) += pm.o sleep.o +obj-$(CONFIG_PXA_SSP) += ssp.o ifeq ($(CONFIG_PXA27x),y) obj-$(CONFIG_PM) += standby.o diff --git a/arch/arm/mach-pxa/corgi_ssp.c b/arch/arm/mach-pxa/corgi_ssp.c index 591e5f32dbec..bdf10cfa9440 100644 --- a/arch/arm/mach-pxa/corgi_ssp.c +++ b/arch/arm/mach-pxa/corgi_ssp.c @@ -203,7 +203,7 @@ static int __init corgi_ssp_probe(struct device *dev) GPDR(ssp_machinfo->cs_ads7846) |= GPIO_bit(ssp_machinfo->cs_ads7846); /* output */ GPSR(ssp_machinfo->cs_ads7846) = GPIO_bit(ssp_machinfo->cs_ads7846); /* High - Disable ADS7846*/ - ret = ssp_init(&corgi_ssp_dev,ssp_machinfo->port); + ret = ssp_init(&corgi_ssp_dev, ssp_machinfo->port, 0); if (ret) printk(KERN_ERR "Unable to register SSP handler!\n"); diff --git a/arch/arm/mach-pxa/ssp.c b/arch/arm/mach-pxa/ssp.c index 4d826c021315..a68b30eff4d2 100644 --- a/arch/arm/mach-pxa/ssp.c +++ b/arch/arm/mach-pxa/ssp.c @@ -19,6 +19,8 @@ * 22nd Aug 2003 Initial version. * 20th Dec 2004 Added ssp_config for changing port config without * closing the port. + * 4th Aug 2005 Added option to disable irq handler registration and + * cleaned up irq and clock detection. */ #include <linux/module.h> @@ -37,6 +39,26 @@ #define PXA_SSP_PORTS 3 +struct ssp_info_ { + int irq; + u32 clock; +}; + +/* + * SSP port clock and IRQ settings + */ +static const struct ssp_info_ ssp_info[PXA_SSP_PORTS] = { +#if defined (CONFIG_PXA27x) + {IRQ_SSP, CKEN23_SSP1}, + {IRQ_SSP2, CKEN3_SSP2}, + {IRQ_SSP3, CKEN4_SSP3}, +#else + {IRQ_SSP, CKEN3_SSP}, + {IRQ_NSSP, CKEN9_NSSP}, + {IRQ_ASSP, CKEN10_ASSP}, +#endif +}; + static DECLARE_MUTEX(sem); static int use_count[PXA_SSP_PORTS] = {0, 0, 0}; @@ -210,9 +232,9 @@ int ssp_config(struct ssp_dev *dev, u32 mode, u32 flags, u32 psp_flags, u32 spee * %-EBUSY if the resources are already in use * %0 on success */ -int ssp_init(struct ssp_dev *dev, u32 port) +int ssp_init(struct ssp_dev *dev, u32 port, u32 init_flags) { - int ret, irq; + int ret; if (port > PXA_SSP_PORTS || port == 0) return -ENODEV; @@ -229,61 +251,20 @@ int ssp_init(struct ssp_dev *dev, u32 port) up(&sem); return -EBUSY; } - - switch (port) { - case 1: - irq = IRQ_SSP; - break; -#if defined (CONFIG_PXA27x) - case 2: - irq = IRQ_SSP2; - break; - case 3: - irq = IRQ_SSP3; - break; -#else - case 2: - irq = IRQ_NSSP; - break; - case 3: - irq = IRQ_ASSP; - break; -#endif - default: - return -ENODEV; - } - dev->port = port; - ret = request_irq(irq, ssp_interrupt, 0, "SSP", dev); - if (ret) - goto out_region; + /* do we need to get irq */ + if (!(init_flags & SSP_NO_IRQ)) { + ret = request_irq(ssp_info[port-1].irq, ssp_interrupt, + 0, "SSP", dev); + if (ret) + goto out_region; + dev->irq = ssp_info[port-1].irq; + } else + dev->irq = 0; /* turn on SSP port clock */ - switch (dev->port) { -#if defined (CONFIG_PXA27x) - case 1: - pxa_set_cken(CKEN23_SSP1, 1); - break; - case 2: - pxa_set_cken(CKEN3_SSP2, 1); - break; - case 3: - pxa_set_cken(CKEN4_SSP3, 1); - break; -#else - case 1: - pxa_set_cken(CKEN3_SSP, 1); - break; - case 2: - pxa_set_cken(CKEN9_NSSP, 1); - break; - case 3: - pxa_set_cken(CKEN10_ASSP, 1); - break; -#endif - } - + pxa_set_cken(ssp_info[port-1].clock, 1); up(&sem); return 0; @@ -301,46 +282,17 @@ out_region: */ void ssp_exit(struct ssp_dev *dev) { - int irq; - down(&sem); SSCR0_P(dev->port) &= ~SSCR0_SSE; - /* find irq, save power and turn off SSP port clock */ - switch (dev->port) { -#if defined (CONFIG_PXA27x) - case 1: - irq = IRQ_SSP; - pxa_set_cken(CKEN23_SSP1, 0); - break; - case 2: - irq = IRQ_SSP2; - pxa_set_cken(CKEN3_SSP2, 0); - break; - case 3: - irq = IRQ_SSP3; - pxa_set_cken(CKEN4_SSP3, 0); - break; -#else - case 1: - irq = IRQ_SSP; - pxa_set_cken(CKEN3_SSP, 0); - break; - case 2: - irq = IRQ_NSSP; - pxa_set_cken(CKEN9_NSSP, 0); - break; - case 3: - irq = IRQ_ASSP; - pxa_set_cken(CKEN10_ASSP, 0); - break; -#endif - default: - printk(KERN_WARNING "SSP: tried to close invalid port\n"); - return; + if (dev->port > PXA_SSP_PORTS || dev->port == 0) { + printk(KERN_WARNING "SSP: tried to close invalid port\n"); + return; } - free_irq(irq, dev); + pxa_set_cken(ssp_info[dev->port-1].clock, 0); + if (dev->irq) + free_irq(dev->irq, dev); release_mem_region(__PREG(SSCR0_P(dev->port)), 0x2c); use_count[dev->port - 1]--; up(&sem); |