mfd: Adopt mfd_data in 88pm860x led
Haojian Zhuang [Mon, 7 Mar 2011 15:43:10 +0000 (23:43 +0800)]
Copy 88pm860x platform data into different mfd_data structure for
led driver. So move the identification of device node from led
driver to mfd driver.

Signed-off-by: Haojian Zhuang <haojian.zhuang@marvell.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

drivers/leds/leds-88pm860x.c
drivers/mfd/88pm860x-core.c
include/linux/mfd/88pm860x.h

index e672b44..416def8 100644 (file)
@@ -17,6 +17,7 @@
 #include <linux/leds.h>
 #include <linux/slab.h>
 #include <linux/workqueue.h>
+#include <linux/mfd/core.h>
 #include <linux/mfd/88pm860x.h>
 
 #define LED_PWM_SHIFT          (3)
@@ -118,7 +119,8 @@ static void pm860x_led_work(struct work_struct *work)
 
        struct pm860x_led *led;
        struct pm860x_chip *chip;
-       int mask;
+       unsigned char buf[3];
+       int mask, ret;
 
        led = container_of(work, struct pm860x_led, work);
        chip = led->chip;
@@ -128,16 +130,27 @@ static void pm860x_led_work(struct work_struct *work)
                        pm860x_set_bits(led->i2c, __led_off(led->port),
                                        LED_CURRENT_MASK, led->iset);
                }
+               pm860x_set_bits(led->i2c, __blink_off(led->port),
+                               LED_BLINK_MASK, LED_ON_CONTINUOUS);
                mask = __blink_ctl_mask(led->port);
                pm860x_set_bits(led->i2c, PM8606_WLED3B, mask, mask);
-       } else if (led->brightness == 0) {
-               pm860x_set_bits(led->i2c, __led_off(led->port),
-                               LED_CURRENT_MASK, 0);
-               mask = __blink_ctl_mask(led->port);
-               pm860x_set_bits(led->i2c, PM8606_WLED3B, mask, 0);
        }
        pm860x_set_bits(led->i2c, __led_off(led->port), LED_PWM_MASK,
                        led->brightness);
+
+       if (led->brightness == 0) {
+               pm860x_bulk_read(led->i2c, __led_off(led->port), 3, buf);
+               ret = buf[0] & LED_PWM_MASK;
+               ret |= buf[1] & LED_PWM_MASK;
+               ret |= buf[2] & LED_PWM_MASK;
+               if (ret == 0) {
+                       /* unset current since no led is lighting */
+                       pm860x_set_bits(led->i2c, __led_off(led->port),
+                                       LED_CURRENT_MASK, 0);
+                       mask = __blink_ctl_mask(led->port);
+                       pm860x_set_bits(led->i2c, PM8606_WLED3B, mask, 0);
+               }
+       }
        led->current_brightness = led->brightness;
        dev_dbg(chip->dev, "Update LED. (reg:%d, brightness:%d)\n",
                __led_off(led->port), led->brightness);
@@ -153,31 +166,12 @@ static void pm860x_led_set(struct led_classdev *cdev,
        schedule_work(&data->work);
 }
 
-static int __check_device(struct pm860x_led_pdata *pdata, char *name)
-{
-       struct pm860x_led_pdata *p = pdata;
-       int ret = -EINVAL;
-
-       while (p && p->id) {
-               if ((p->id != PM8606_ID_LED) || (p->flags < 0))
-                       break;
-
-               if (!strncmp(name, pm860x_led_name[p->flags],
-                       MFD_NAME_SIZE)) {
-                       ret = (int)p->flags;
-                       break;
-               }
-               p++;
-       }
-       return ret;
-}
-
 static int pm860x_led_probe(struct platform_device *pdev)
 {
        struct pm860x_chip *chip = dev_get_drvdata(pdev->dev.parent);
-       struct pm860x_platform_data *pm860x_pdata;
        struct pm860x_led_pdata *pdata;
        struct pm860x_led *data;
+       struct mfd_cell *cell;
        struct resource *res;
        int ret;
 
@@ -187,10 +181,11 @@ static int pm860x_led_probe(struct platform_device *pdev)
                return -EINVAL;
        }
 
-       if (pdev->dev.parent->platform_data) {
-               pm860x_pdata = pdev->dev.parent->platform_data;
-               pdata = pm860x_pdata->led;
-       } else {
+       cell = pdev->dev.platform_data;
+       if (cell == NULL)
+               return -ENODEV;
+       pdata = cell->mfd_data;
+       if (pdata == NULL) {
                dev_err(&pdev->dev, "No platform data!\n");
                return -EINVAL;
        }
@@ -198,12 +193,12 @@ static int pm860x_led_probe(struct platform_device *pdev)
        data = kzalloc(sizeof(struct pm860x_led), GFP_KERNEL);
        if (data == NULL)
                return -ENOMEM;
-       strncpy(data->name, res->name, MFD_NAME_SIZE);
+       strncpy(data->name, res->name, MFD_NAME_SIZE - 1);
        dev_set_drvdata(&pdev->dev, data);
        data->chip = chip;
        data->i2c = (chip->id == CHIP_PM8606) ? chip->client : chip->companion;
        data->iset = pdata->iset;
-       data->port = __check_device(pdata, data->name);
+       data->port = pdata->flags;
        if (data->port < 0) {
                dev_err(&pdev->dev, "check device failed\n");
                kfree(data);
@@ -221,6 +216,7 @@ static int pm860x_led_probe(struct platform_device *pdev)
                dev_err(&pdev->dev, "Failed to register LED: %d\n", ret);
                goto out;
        }
+       pm860x_led_set(&data->cdev, 0);
        return 0;
 out:
        kfree(data);
index a88967a..cec375c 100644 (file)
@@ -26,57 +26,32 @@ static struct resource bk_resources[] __initdata = {
        {PM8606_BACKLIGHT3, PM8606_BACKLIGHT3, "backlight-2", IORESOURCE_IO,},
 };
 
+static struct resource led_resources[] __initdata = {
+       {PM8606_LED1_RED,   PM8606_LED1_RED,   "led0-red",   IORESOURCE_IO,},
+       {PM8606_LED1_GREEN, PM8606_LED1_GREEN, "led0-green", IORESOURCE_IO,},
+       {PM8606_LED1_BLUE,  PM8606_LED1_BLUE,  "led0-blue",  IORESOURCE_IO,},
+       {PM8606_LED2_RED,   PM8606_LED2_RED,   "led1-red",   IORESOURCE_IO,},
+       {PM8606_LED2_GREEN, PM8606_LED2_GREEN, "led1-green", IORESOURCE_IO,},
+       {PM8606_LED2_BLUE,  PM8606_LED2_BLUE,  "led1-blue",  IORESOURCE_IO,},
+};
+
 static struct mfd_cell bk_devs[] __initdata = {
        {"88pm860x-backlight", 0,},
        {"88pm860x-backlight", 1,},
        {"88pm860x-backlight", 2,},
 };
 
-static struct pm860x_backlight_pdata bk_pdata[ARRAY_SIZE(bk_devs)];
-
-char pm860x_led_name[][MFD_NAME_SIZE] = {
-       "led0-red",
-       "led0-green",
-       "led0-blue",
-       "led1-red",
-       "led1-green",
-       "led1-blue",
-};
-EXPORT_SYMBOL(pm860x_led_name);
-
-#define PM8606_LED_RESOURCE(_i, _x)                    \
-{                                                      \
-       .name   = pm860x_led_name[_i],                  \
-       .start  = PM8606_##_x,                          \
-       .end    = PM8606_##_x,                          \
-       .flags  = IORESOURCE_IO,                        \
-}
-
-static struct resource led_resources[] = {
-       PM8606_LED_RESOURCE(PM8606_LED1_RED, RGB1B),
-       PM8606_LED_RESOURCE(PM8606_LED1_GREEN, RGB1C),
-       PM8606_LED_RESOURCE(PM8606_LED1_BLUE, RGB1D),
-       PM8606_LED_RESOURCE(PM8606_LED2_RED, RGB2B),
-       PM8606_LED_RESOURCE(PM8606_LED2_GREEN, RGB2C),
-       PM8606_LED_RESOURCE(PM8606_LED2_BLUE, RGB2D),
+static struct mfd_cell led_devs[] __initdata = {
+       {"88pm860x-led", 0,},
+       {"88pm860x-led", 1,},
+       {"88pm860x-led", 2,},
+       {"88pm860x-led", 3,},
+       {"88pm860x-led", 4,},
+       {"88pm860x-led", 5,},
 };
 
-#define PM8606_LED_DEVS(_i)                            \
-{                                                      \
-       .name           = "88pm860x-led",               \
-       .num_resources  = 1,                            \
-       .resources      = &led_resources[_i],           \
-       .id             = _i,                           \
-}
-
-static struct mfd_cell led_devs[] = {
-       PM8606_LED_DEVS(PM8606_LED1_RED),
-       PM8606_LED_DEVS(PM8606_LED1_GREEN),
-       PM8606_LED_DEVS(PM8606_LED1_BLUE),
-       PM8606_LED_DEVS(PM8606_LED2_RED),
-       PM8606_LED_DEVS(PM8606_LED2_GREEN),
-       PM8606_LED_DEVS(PM8606_LED2_BLUE),
-};
+static struct pm860x_backlight_pdata bk_pdata[ARRAY_SIZE(bk_devs)];
+static struct pm860x_led_pdata led_pdata[ARRAY_SIZE(led_devs)];
 
 static struct resource touch_resources[] = {
        {
@@ -611,25 +586,41 @@ static void __devinit device_bk_init(struct pm860x_chip *chip,
        }
 }
 
-static void __devinit device_8606_init(struct pm860x_chip *chip,
-                                      struct i2c_client *i2c,
-                                      struct pm860x_platform_data *pdata)
+static void __devinit device_led_init(struct pm860x_chip *chip,
+                                     struct i2c_client *i2c,
+                                     struct pm860x_platform_data *pdata)
 {
        int ret;
+       int i, j, id;
 
-       if (pdata && pdata->led) {
-               ret = mfd_add_devices(chip->dev, 0, &led_devs[0],
-                                     ARRAY_SIZE(led_devs),
-                                     &led_resources[0], 0);
-               if (ret < 0) {
-                       dev_err(chip->dev, "Failed to add led "
-                               "subdev\n");
-                       goto out_dev;
+       if ((pdata == NULL) || (pdata->led == NULL))
+               return;
+
+       if (pdata->num_leds > ARRAY_SIZE(led_devs))
+               pdata->num_leds = ARRAY_SIZE(led_devs);
+
+       for (i = 0; i < pdata->num_leds; i++) {
+               memcpy(&led_pdata[i], &pdata->led[i],
+                       sizeof(struct pm860x_led_pdata));
+               led_devs[i].mfd_data = &led_pdata[i];
+
+               for (j = 0; j < ARRAY_SIZE(led_devs); j++) {
+                       id = led_resources[j].start;
+                       if (led_pdata[i].flags != id)
+                               continue;
+
+                       led_devs[i].num_resources = 1;
+                       led_devs[i].resources = &led_resources[j],
+                       ret = mfd_add_devices(chip->dev, 0,
+                                             &led_devs[i], 1,
+                                             &led_resources[j], 0);
+                       if (ret < 0) {
+                               dev_err(chip->dev, "Failed to add "
+                                       "led subdev\n");
+                               return;
+                       }
                }
        }
-       return;
-out_dev:
-       device_irq_exit(chip);
 }
 
 static void __devinit device_8607_init(struct pm860x_chip *chip,
@@ -748,7 +739,7 @@ int __devinit pm860x_device_init(struct pm860x_chip *chip,
        switch (chip->id) {
        case CHIP_PM8606:
                device_bk_init(chip, chip->client, pdata);
-               device_8606_init(chip, chip->client, pdata);
+               device_led_init(chip, chip->client, pdata);
                break;
        case CHIP_PM8607:
                device_8607_init(chip, chip->client, pdata);
@@ -759,7 +750,7 @@ int __devinit pm860x_device_init(struct pm860x_chip *chip,
                switch (chip->id) {
                case CHIP_PM8607:
                        device_bk_init(chip, chip->companion, pdata);
-                       device_8606_init(chip, chip->companion, pdata);
+                       device_led_init(chip, chip->companion, pdata);
                        break;
                case CHIP_PM8606:
                        device_8607_init(chip, chip->companion, pdata);
index f790d37..ff60614 100644 (file)
@@ -356,12 +356,11 @@ struct pm860x_platform_data {
        int             i2c_port;       /* Controlled by GI2C or PI2C */
        int             irq_mode;       /* Clear interrupt by read/write(0/1) */
        int             irq_base;       /* IRQ base number of 88pm860x */
+       int             num_leds;
        int             num_backlights;
        struct regulator_init_data *regulator[PM8607_MAX_REGULATOR];
 };
 
-extern char pm860x_led_name[][MFD_NAME_SIZE];
-
 extern int pm860x_reg_read(struct i2c_client *, int);
 extern int pm860x_reg_write(struct i2c_client *, int, unsigned char);
 extern int pm860x_bulk_read(struct i2c_client *, int, int, unsigned char *);