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| author | Robert Jarzmik <robert.jarzmik@free.fr> | 2012-02-16 19:23:47 +0100 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2012-02-17 10:18:30 +0100 |
| commit | bf841a598e0ce6550c477875fe8567bc507d8d23 (patch) | |
| tree | 641cd4d6a9f58af1cc2d6723f979ddb0a67731f3 /arch/arm/mach-pxa | |
| parent | 6fa3e3119ff2864dac131933a1abfe201a264a0a (diff) | |
| download | barebox-bf841a598e0ce6550c477875fe8567bc507d8d23.tar.gz barebox-bf841a598e0ce6550c477875fe8567bc507d8d23.tar.xz | |
drivers/pwm: add PXA pulse width modulator controller
Add PXA embedded pulse width modulator support. The PWM can
generate signals from 49.6kHz to 1.625MHz.
The driver is for pxa2xx family. The pxa3xx was not handled yet.
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'arch/arm/mach-pxa')
| -rw-r--r-- | arch/arm/mach-pxa/Makefile | 1 | ||||
| -rw-r--r-- | arch/arm/mach-pxa/devices.c | 5 | ||||
| -rw-r--r-- | arch/arm/mach-pxa/include/mach/clock.h | 1 | ||||
| -rw-r--r-- | arch/arm/mach-pxa/include/mach/devices.h | 2 | ||||
| -rw-r--r-- | arch/arm/mach-pxa/include/mach/regs-pwm.h | 20 | ||||
| -rw-r--r-- | arch/arm/mach-pxa/speed-pxa27x.c | 5 |
6 files changed, 33 insertions, 1 deletions
diff --git a/arch/arm/mach-pxa/Makefile b/arch/arm/mach-pxa/Makefile index c01a9e0281..6a02a5459c 100644 --- a/arch/arm/mach-pxa/Makefile +++ b/arch/arm/mach-pxa/Makefile @@ -1,6 +1,7 @@ obj-y += clocksource.o obj-y += common.o obj-y += gpio.o +obj-y += devices.o obj-$(CONFIG_ARCH_PXA2XX) += mfp-pxa2xx.o obj-$(CONFIG_ARCH_PXA27X) += speed-pxa27x.o diff --git a/arch/arm/mach-pxa/devices.c b/arch/arm/mach-pxa/devices.c index 1a396f1258..b6ac0ba621 100644 --- a/arch/arm/mach-pxa/devices.c +++ b/arch/arm/mach-pxa/devices.c @@ -47,3 +47,8 @@ struct device_d *pxa_add_mmc(void *base, int id, void *pdata) { return pxa_add_device("pxa-mmc", id, base, 0x1000, pdata); } + +struct device_d *pxa_add_pwm(void *base, int id) +{ + return pxa_add_device("pxa_pwm", id, base, 0x10, NULL); +} diff --git a/arch/arm/mach-pxa/include/mach/clock.h b/arch/arm/mach-pxa/include/mach/clock.h index c53432f015..f86152f7af 100644 --- a/arch/arm/mach-pxa/include/mach/clock.h +++ b/arch/arm/mach-pxa/include/mach/clock.h @@ -14,5 +14,6 @@ unsigned long pxa_get_uartclk(void); unsigned long pxa_get_mmcclk(void); unsigned long pxa_get_lcdclk(void); +unsigned long pxa_get_pwmclk(void); #endif /* !__MACH_CLOCK_H */ diff --git a/arch/arm/mach-pxa/include/mach/devices.h b/arch/arm/mach-pxa/include/mach/devices.h index e205b7c7f2..8390153864 100644 --- a/arch/arm/mach-pxa/include/mach/devices.h +++ b/arch/arm/mach-pxa/include/mach/devices.h @@ -23,4 +23,4 @@ struct device_d *pxa_add_i2c(void *base, int id, struct device_d *pxa_add_uart(void *base, int id); struct device_d *pxa_add_fb(void *base, struct pxafb_platform_data *pdata); struct device_d *pxa_add_mmc(void *base, int id, void *pdata); - +struct device_d *pxa_add_pwm(void *base, int id); diff --git a/arch/arm/mach-pxa/include/mach/regs-pwm.h b/arch/arm/mach-pxa/include/mach/regs-pwm.h new file mode 100644 index 0000000000..9fdcbb64ae --- /dev/null +++ b/arch/arm/mach-pxa/include/mach/regs-pwm.h @@ -0,0 +1,20 @@ +/* + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ +#ifndef __ASM_MACH_REGS_PWM_H +#define __ASM_MACH_REGS_PWM_H + +#include <mach/hardware.h> + +/* + * Pulse modulator registers + */ +#define PWM0 0x40B00000 +#define PWM1 0x40C00000 +#define PWM0slave 0x40B00010 +#define PWM1slave 0x40C00010 + +#endif diff --git a/arch/arm/mach-pxa/speed-pxa27x.c b/arch/arm/mach-pxa/speed-pxa27x.c index 534eb1dcc7..1de034c677 100644 --- a/arch/arm/mach-pxa/speed-pxa27x.c +++ b/arch/arm/mach-pxa/speed-pxa27x.c @@ -47,3 +47,8 @@ unsigned long pxa_get_lcdclk(void) { return pxa_get_lcdclk_10khz() * 10000; } + +unsigned long pxa_get_pwmclk(void) +{ + return BASE_CLK; +} |