diff options
| author | Eric Nelson <eric.nelson@boundarydevices.com> | 2013-12-20 19:03:04 -0700 |
|---|---|---|
| committer | Eric Nelson <eric.nelson@boundarydevices.com> | 2013-12-20 19:03:04 -0700 |
| commit | 565a97162fceee00f0618301351138a3f8d19cbc (patch) | |
| tree | f21993051789e0106298a105c1b03583d78c6d17 /arch | |
| parent | 0622946af9c6f767a1d8a2336980ba04201ebe35 (diff) | |
r: add Piezo support (led_pwm) on PWM4 as /sys/class/leds/buzzer
Signed-off-by: Eric Nelson <eric.nelson@boundarydevices.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/mach-mx6/board-mx6_r.c | 28 | ||||
| -rw-r--r-- | arch/arm/mach-mx6/pads-mx6_r.h | 3 |
2 files changed, 30 insertions, 1 deletions
diff --git a/arch/arm/mach-mx6/board-mx6_r.c b/arch/arm/mach-mx6/board-mx6_r.c index 31129356af7d..73b7818c2abf 100644 --- a/arch/arm/mach-mx6/board-mx6_r.c +++ b/arch/arm/mach-mx6/board-mx6_r.c @@ -24,6 +24,7 @@ #include <linux/irq.h> #include <linux/init.h> #include <linux/input.h> +#include <linux/leds_pwm.h> #include <linux/nodemask.h> #include <linux/clk.h> #include <linux/platform_device.h> @@ -777,6 +778,29 @@ static struct imx_bt_rfkill_platform_data mxc_bt_rfkill_data = { .power_change = bt_power_change, }; +static struct led_pwm pwms[] = { + [0] = { + .name = "buzzer", + .default_trigger = "what_default_trigger", + .pwm_id = 3, + .active_low = 0, + .max_brightness = 0x100, + .pwm_period_ns = 3822192, /* middle "C" is 261.63 hz or */ + }, +}; + +static struct led_pwm_platform_data plat_led = { + .num_leds = 1, + .leds = pwms, +}; +static struct platform_device platdev_leds_pwd = { + .name = "leds_pwm", + .dev = { + .platform_data = &plat_led, + }, +}; + + /*! * Board specific initialization. */ @@ -870,7 +894,7 @@ static void __init board_init(void) imx6q_add_asrc(&imx_asrc_data); imx6q_add_mxc_pwm(0); - imx6q_add_mxc_pwm(1); + imx6q_add_mxc_pwm(3); imx6q_add_mxc_pwm_backlight(0, &pwm1_backlight_data); @@ -881,6 +905,8 @@ static void __init board_init(void) imx6q_add_dvfs_core(&dvfscore_data); + platform_device_register(&platdev_leds_pwd); + add_device_buttons(); imx6q_add_hdmi_soc(); diff --git a/arch/arm/mach-mx6/pads-mx6_r.h b/arch/arm/mach-mx6/pads-mx6_r.h index c9985d428e0f..0a1ad542811d 100644 --- a/arch/arm/mach-mx6/pads-mx6_r.h +++ b/arch/arm/mach-mx6/pads-mx6_r.h @@ -135,6 +135,9 @@ static iomux_v3_cfg_t MX6NAME(common_pads)[] = { NEW_PAD_CTRL(MX6PAD(NANDF_CS0__GPIO_6_11), WEAK_PULLUP), /* pin 10 - NC */ NEW_PAD_CTRL(MX6PAD(SD1_DAT1__GPIO_1_17), WEAK_PULLUP), /* pin 11 - NC */ + /* PWM4: Audio buzzer*/ + MX6PAD(SD1_CMD__PWM4_PWMO), /* GPIO1[18] */ + /* GPIO1 */ MX6PAD(SD1_DAT0__GPIO_1_16), /* Main power enable */ |