From a59ce6584d566847980f9dcad5343cd9856145c8 Mon Sep 17 00:00:00 2001 From: Alexander Shiyan Date: Fri, 31 Jan 2014 22:36:28 -0800 Subject: [PATCH] leds: leds-mc13783: Add MC34708 LED support This patch adds support for two LEDs on MC34708 PMIC. Signed-off-by: Alexander Shiyan Signed-off-by: Bryan Wu --- drivers/leds/Kconfig | 2 +- drivers/leds/leds-mc13783.c | 98 ++++++++++++++++++------------------- include/linux/mfd/mc13xxx.h | 6 +++ 3 files changed, 55 insertions(+), 51 deletions(-) diff --git a/drivers/leds/Kconfig b/drivers/leds/Kconfig index 72156c123033..93466d215706 100644 --- a/drivers/leds/Kconfig +++ b/drivers/leds/Kconfig @@ -416,7 +416,7 @@ config LEDS_MC13783 depends on MFD_MC13XXX help This option enable support for on-chip LED drivers found - on Freescale Semiconductor MC13783/MC13892 PMIC. + on Freescale Semiconductor MC13783/MC13892/MC34708 PMIC. config LEDS_NS2 tristate "LED support for Network Space v2 GPIO LEDs" diff --git a/drivers/leds/leds-mc13783.c b/drivers/leds/leds-mc13783.c index ca87a1b4a0db..68f2455c672f 100644 --- a/drivers/leds/leds-mc13783.c +++ b/drivers/leds/leds-mc13783.c @@ -1,5 +1,5 @@ /* - * LEDs driver for Freescale MC13783/MC13892 + * LEDs driver for Freescale MC13783/MC13892/MC34708 * * Copyright (C) 2010 Philippe Rétornaz * @@ -23,23 +23,23 @@ #include #include -#define MC13XXX_REG_LED_CONTROL(x) (51 + (x)) - struct mc13xxx_led_devtype { int led_min; int led_max; int num_regs; + u32 ledctrl_base; }; struct mc13xxx_led { struct led_classdev cdev; struct work_struct work; - struct mc13xxx *master; enum led_brightness new_brightness; int id; + struct mc13xxx_leds *leds; }; struct mc13xxx_leds { + struct mc13xxx *master; struct mc13xxx_led_devtype *devtype; int num_leds; struct mc13xxx_led led[0]; @@ -48,24 +48,15 @@ struct mc13xxx_leds { static void mc13xxx_led_work(struct work_struct *work) { struct mc13xxx_led *led = container_of(work, struct mc13xxx_led, work); - int reg, mask, value, bank, off, shift; + struct mc13xxx_leds *leds = led->leds; + unsigned int reg, mask, value, bank, off, shift; switch (led->id) { case MC13783_LED_MD: - reg = MC13XXX_REG_LED_CONTROL(2); - shift = 9; - mask = 0x0f; - value = led->new_brightness >> 4; - break; case MC13783_LED_AD: - reg = MC13XXX_REG_LED_CONTROL(2); - shift = 13; - mask = 0x0f; - value = led->new_brightness >> 4; - break; case MC13783_LED_KP: - reg = MC13XXX_REG_LED_CONTROL(2); - shift = 17; + reg = 2; + shift = 9 + (led->id - MC13783_LED_MD) * 4; mask = 0x0f; value = led->new_brightness >> 4; break; @@ -80,26 +71,16 @@ static void mc13xxx_led_work(struct work_struct *work) case MC13783_LED_B3: off = led->id - MC13783_LED_R1; bank = off / 3; - reg = MC13XXX_REG_LED_CONTROL(3) + bank; + reg = 3 + bank; shift = (off - bank * 3) * 5 + 6; value = led->new_brightness >> 3; mask = 0x1f; break; case MC13892_LED_MD: - reg = MC13XXX_REG_LED_CONTROL(0); - shift = 3; - mask = 0x3f; - value = led->new_brightness >> 2; - break; case MC13892_LED_AD: - reg = MC13XXX_REG_LED_CONTROL(0); - shift = 15; - mask = 0x3f; - value = led->new_brightness >> 2; - break; case MC13892_LED_KP: - reg = MC13XXX_REG_LED_CONTROL(1); - shift = 3; + reg = (led->id - MC13892_LED_MD) / 2; + shift = 3 + (led->id - MC13892_LED_MD) * 12; mask = 0x3f; value = led->new_brightness >> 2; break; @@ -108,16 +89,24 @@ static void mc13xxx_led_work(struct work_struct *work) case MC13892_LED_B: off = led->id - MC13892_LED_R; bank = off / 2; - reg = MC13XXX_REG_LED_CONTROL(2) + bank; + reg = 2 + bank; shift = (off - bank * 2) * 12 + 3; value = led->new_brightness >> 2; mask = 0x3f; break; + case MC34708_LED_R: + case MC34708_LED_G: + reg = 0; + shift = 3 + (led->id - MC34708_LED_R) * 12; + value = led->new_brightness >> 2; + mask = 0x3f; + break; default: BUG(); } - mc13xxx_reg_rmw(led->master, reg, mask << shift, value << shift); + mc13xxx_reg_rmw(leds->master, leds->devtype->ledctrl_base + reg, + mask << shift, value << shift); } static void mc13xxx_led_set(struct led_classdev *led_cdev, @@ -132,16 +121,17 @@ static void mc13xxx_led_set(struct led_classdev *led_cdev, static int __init mc13xxx_led_probe(struct platform_device *pdev) { - struct mc13xxx_leds_platform_data *pdata = dev_get_platdata(&pdev->dev); - struct mc13xxx *mcdev = dev_get_drvdata(pdev->dev.parent); + struct device *dev = &pdev->dev; + struct mc13xxx_leds_platform_data *pdata = dev_get_platdata(dev); + struct mc13xxx *mcdev = dev_get_drvdata(dev->parent); struct mc13xxx_led_devtype *devtype = (struct mc13xxx_led_devtype *)pdev->id_entry->driver_data; struct mc13xxx_leds *leds; int i, id, num_leds, ret = -ENODATA; - u32 reg, init_led = 0; + u32 init_led = 0; if (!pdata) { - dev_err(&pdev->dev, "Missing platform data\n"); + dev_err(dev, "Missing platform data\n"); return -ENODEV; } @@ -149,23 +139,23 @@ static int __init mc13xxx_led_probe(struct platform_device *pdev) if ((num_leds < 1) || (num_leds > (devtype->led_max - devtype->led_min + 1))) { - dev_err(&pdev->dev, "Invalid LED count %d\n", num_leds); + dev_err(dev, "Invalid LED count %d\n", num_leds); return -EINVAL; } - leds = devm_kzalloc(&pdev->dev, num_leds * sizeof(struct mc13xxx_led) + + leds = devm_kzalloc(dev, num_leds * sizeof(struct mc13xxx_led) + sizeof(struct mc13xxx_leds), GFP_KERNEL); if (!leds) return -ENOMEM; leds->devtype = devtype; leds->num_leds = num_leds; + leds->master = mcdev; platform_set_drvdata(pdev, leds); for (i = 0; i < devtype->num_regs; i++) { - reg = pdata->led_control[i]; - WARN_ON(reg >= (1 << 24)); - ret = mc13xxx_reg_write(mcdev, MC13XXX_REG_LED_CONTROL(i), reg); + ret = mc13xxx_reg_write(mcdev, leds->devtype->ledctrl_base + i, + pdata->led_control[i]); if (ret) return ret; } @@ -180,19 +170,18 @@ static int __init mc13xxx_led_probe(struct platform_device *pdev) trig = pdata->led[i].default_trigger; if ((id > devtype->led_max) || (id < devtype->led_min)) { - dev_err(&pdev->dev, "Invalid ID %i\n", id); + dev_err(dev, "Invalid ID %i\n", id); break; } if (init_led & (1 << id)) { - dev_warn(&pdev->dev, - "LED %i already initialized\n", id); + dev_warn(dev, "LED %i already initialized\n", id); break; } init_led |= 1 << id; leds->led[i].id = id; - leds->led[i].master = mcdev; + leds->led[i].leds = leds; leds->led[i].cdev.name = name; leds->led[i].cdev.default_trigger = trig; leds->led[i].cdev.brightness_set = mc13xxx_led_set; @@ -200,10 +189,9 @@ static int __init mc13xxx_led_probe(struct platform_device *pdev) INIT_WORK(&leds->led[i].work, mc13xxx_led_work); - ret = led_classdev_register(pdev->dev.parent, - &leds->led[i].cdev); + ret = led_classdev_register(dev->parent, &leds->led[i].cdev); if (ret) { - dev_err(&pdev->dev, "Failed to register LED %i\n", id); + dev_err(dev, "Failed to register LED %i\n", id); break; } } @@ -219,8 +207,8 @@ static int __init mc13xxx_led_probe(struct platform_device *pdev) static int mc13xxx_led_remove(struct platform_device *pdev) { - struct mc13xxx *mcdev = dev_get_drvdata(pdev->dev.parent); struct mc13xxx_leds *leds = platform_get_drvdata(pdev); + struct mc13xxx *mcdev = leds->master; int i; for (i = 0; i < leds->num_leds; i++) { @@ -229,7 +217,7 @@ static int mc13xxx_led_remove(struct platform_device *pdev) } for (i = 0; i < leds->devtype->num_regs; i++) - mc13xxx_reg_write(mcdev, MC13XXX_REG_LED_CONTROL(i), 0); + mc13xxx_reg_write(mcdev, leds->devtype->ledctrl_base + i, 0); return 0; } @@ -238,17 +226,27 @@ static const struct mc13xxx_led_devtype mc13783_led_devtype = { .led_min = MC13783_LED_MD, .led_max = MC13783_LED_B3, .num_regs = 6, + .ledctrl_base = 51, }; static const struct mc13xxx_led_devtype mc13892_led_devtype = { .led_min = MC13892_LED_MD, .led_max = MC13892_LED_B, .num_regs = 4, + .ledctrl_base = 51, +}; + +static const struct mc13xxx_led_devtype mc34708_led_devtype = { + .led_min = MC34708_LED_R, + .led_max = MC34708_LED_G, + .num_regs = 1, + .ledctrl_base = 54, }; static const struct platform_device_id mc13xxx_led_id_table[] = { { "mc13783-led", (kernel_ulong_t)&mc13783_led_devtype, }, { "mc13892-led", (kernel_ulong_t)&mc13892_led_devtype, }, + { "mc34708-led", (kernel_ulong_t)&mc34708_led_devtype, }, { } }; MODULE_DEVICE_TABLE(platform, mc13xxx_led_id_table); diff --git a/include/linux/mfd/mc13xxx.h b/include/linux/mfd/mc13xxx.h index ac39d910e70b..a326c850f046 100644 --- a/include/linux/mfd/mc13xxx.h +++ b/include/linux/mfd/mc13xxx.h @@ -104,6 +104,9 @@ enum { MC13892_LED_R, MC13892_LED_G, MC13892_LED_B, + /* MC34708 LED IDs */ + MC34708_LED_R, + MC34708_LED_G, }; struct mc13xxx_led_platform_data { @@ -163,6 +166,9 @@ struct mc13xxx_leds_platform_data { #define MC13892_LED_C2_CURRENT_G(x) (((x) & 0x7) << 21) /* MC13892 LED Control 3 */ #define MC13892_LED_C3_CURRENT_B(x) (((x) & 0x7) << 9) +/* MC34708 LED Control 0 */ +#define MC34708_LED_C0_CURRENT_R(x) (((x) & 0x3) << 9) +#define MC34708_LED_C0_CURRENT_G(x) (((x) & 0x3) << 21) u32 led_control[MAX_LED_CONTROL_REGS]; }; -- 2.20.1