From mboxrd@z Thu Jan 1 00:00:00 1970 From: b02280@freescale.com (Jason Chen) Date: Tue, 1 Mar 2011 14:30:17 +0800 Subject: [PATCH 1/2] ARM imx53: add pwm devices support Message-ID: <1298961018-8988-1-git-send-email-b02280@freescale.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Signed-off-by: Jason Chen --- arch/arm/mach-mx5/clock-mx51-mx53.c | 2 ++ arch/arm/mach-mx5/devices-imx53.h | 4 ++++ arch/arm/mach-mx5/devices.c | 10 ++++++++++ arch/arm/mach-mx5/devices.h | 2 ++ arch/arm/plat-mxc/devices/Kconfig | 1 + arch/arm/plat-mxc/devices/platform-mxc_pwm.c | 9 +++++++++ arch/arm/plat-mxc/pwm.c | 3 ++- 7 files changed, 30 insertions(+), 1 deletions(-) diff --git a/arch/arm/mach-mx5/clock-mx51-mx53.c b/arch/arm/mach-mx5/clock-mx51-mx53.c index 8164b1d..e18807b 100644 --- a/arch/arm/mach-mx5/clock-mx51-mx53.c +++ b/arch/arm/mach-mx5/clock-mx51-mx53.c @@ -1338,6 +1338,8 @@ static struct clk_lookup mx53_lookups[] = { _REGISTER_CLOCK("imx53-cspi.0", NULL, cspi_clk) _REGISTER_CLOCK("imx2-wdt.0", NULL, dummy_clk) _REGISTER_CLOCK("imx2-wdt.1", NULL, dummy_clk) + _REGISTER_CLOCK("mxc_pwm.0", "pwm", pwm1_clk) + _REGISTER_CLOCK("mxc_pwm.1", "pwm", pwm2_clk) }; static void clk_tree_init(void) diff --git a/arch/arm/mach-mx5/devices-imx53.h b/arch/arm/mach-mx5/devices-imx53.h index 9251008..5a1d6c9 100644 --- a/arch/arm/mach-mx5/devices-imx53.h +++ b/arch/arm/mach-mx5/devices-imx53.h @@ -33,3 +33,7 @@ extern const struct imx_spi_imx_data imx53_ecspi_data[] __initconst; extern const struct imx_imx2_wdt_data imx53_imx2_wdt_data[] __initconst; #define imx53_add_imx2_wdt(id, pdata) \ imx_add_imx2_wdt(&imx53_imx2_wdt_data[id]) + +extern const struct imx_mxc_pwm_data imx53_mxc_pwm_data[] __initconst; +#define imx53_add_mxc_pwm(id) \ + imx_add_mxc_pwm(&imx53_mxc_pwm_data[id]) diff --git a/arch/arm/mach-mx5/devices.c b/arch/arm/mach-mx5/devices.c index 153ada5..74aec2b 100644 --- a/arch/arm/mach-mx5/devices.c +++ b/arch/arm/mach-mx5/devices.c @@ -120,6 +120,16 @@ struct platform_device mxc_usbh2_device = { }, }; +struct platform_device mxc_pwm1_backlight_device = { + .name = "pwm-backlight", + .id = 0, +}; + +struct platform_device mxc_pwm2_backlight_device = { + .name = "pwm-backlight", + .id = 1, +}; + static struct mxc_gpio_port mxc_gpio_ports[] = { { .chip.label = "gpio-0", diff --git a/arch/arm/mach-mx5/devices.h b/arch/arm/mach-mx5/devices.h index 55a5129..a74cd97 100644 --- a/arch/arm/mach-mx5/devices.h +++ b/arch/arm/mach-mx5/devices.h @@ -3,3 +3,5 @@ extern struct platform_device mxc_usbh1_device; extern struct platform_device mxc_usbh2_device; extern struct platform_device mxc_usbdr_udc_device; extern struct platform_device mxc_hsi2c_device; +extern struct platform_device mxc_pwm1_backlight_device; +extern struct platform_device mxc_pwm2_backlight_device; diff --git a/arch/arm/plat-mxc/devices/Kconfig b/arch/arm/plat-mxc/devices/Kconfig index b9ab1d5..aee9f4b 100644 --- a/arch/arm/plat-mxc/devices/Kconfig +++ b/arch/arm/plat-mxc/devices/Kconfig @@ -58,6 +58,7 @@ config IMX_HAVE_PLATFORM_MXC_NAND config IMX_HAVE_PLATFORM_MXC_PWM bool + default y if ARCH_MX21 || ARCH_MX25 || SOC_IMX27 || SOC_IMX51 || SOC_IMX53 config IMX_HAVE_PLATFORM_MXC_RNGA bool diff --git a/arch/arm/plat-mxc/devices/platform-mxc_pwm.c b/arch/arm/plat-mxc/devices/platform-mxc_pwm.c index b0c4ae2..18cfd07 100644 --- a/arch/arm/plat-mxc/devices/platform-mxc_pwm.c +++ b/arch/arm/plat-mxc/devices/platform-mxc_pwm.c @@ -49,6 +49,15 @@ const struct imx_mxc_pwm_data imx51_mxc_pwm_data[] __initconst = { }; #endif /* ifdef CONFIG_SOC_IMX51 */ +#ifdef CONFIG_SOC_IMX53 +const struct imx_mxc_pwm_data imx53_mxc_pwm_data[] __initconst = { +#define imx53_mxc_pwm_data_entry(_id, _hwid) \ + imx_mxc_pwm_data_entry(MX53, _id, _hwid, SZ_16K) + imx53_mxc_pwm_data_entry(0, 1), + imx53_mxc_pwm_data_entry(1, 2), +}; +#endif /* ifdef CONFIG_SOC_IMX53 */ + struct platform_device *__init imx_add_mxc_pwm( const struct imx_mxc_pwm_data *data) { diff --git a/arch/arm/plat-mxc/pwm.c b/arch/arm/plat-mxc/pwm.c index 7a61ef8..61dd8fb 100644 --- a/arch/arm/plat-mxc/pwm.c +++ b/arch/arm/plat-mxc/pwm.c @@ -57,7 +57,8 @@ int pwm_config(struct pwm_device *pwm, int duty_ns, int period_ns) if (pwm == NULL || period_ns == 0 || duty_ns > period_ns) return -EINVAL; - if (cpu_is_mx27() || cpu_is_mx3() || cpu_is_mx25() || cpu_is_mx51()) { + if (cpu_is_mx27() || cpu_is_mx3() || cpu_is_mx25() || cpu_is_mx51() || + cpu_is_mx53()) { unsigned long long c; unsigned long period_cycles, duty_cycles, prescale; u32 cr; -- 1.7.1