mfd: max8925: Use register offset as REG in backlight
Remove the register offset definition. All these register offset
are transfered as IORESOURCE_REG resources.
Signed-off-by: Haojian Zhuang <haojian.zhuang@gmail.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
diff --git a/drivers/video/backlight/max8925_bl.c b/drivers/video/backlight/max8925_bl.c
index 996dadf..f72ba54 100644
--- a/drivers/video/backlight/max8925_bl.c
+++ b/drivers/video/backlight/max8925_bl.c
@@ -27,7 +27,9 @@
struct max8925_backlight_data {
struct max8925_chip *chip;
- int current_brightness;
+ int current_brightness;
+ int reg_mode_cntl;
+ int reg_cntl;
};
static int max8925_backlight_set(struct backlight_device *bl, int brightness)
@@ -42,16 +44,16 @@
else
value = brightness;
- ret = max8925_reg_write(chip->i2c, MAX8925_WLED_CNTL, value);
+ ret = max8925_reg_write(chip->i2c, data->reg_cntl, value);
if (ret < 0)
goto out;
if (!data->current_brightness && brightness)
/* enable WLED output */
- ret = max8925_set_bits(chip->i2c, MAX8925_WLED_MODE_CNTL, 1, 1);
+ ret = max8925_set_bits(chip->i2c, data->reg_mode_cntl, 1, 1);
else if (!brightness)
/* disable WLED output */
- ret = max8925_set_bits(chip->i2c, MAX8925_WLED_MODE_CNTL, 1, 0);
+ ret = max8925_set_bits(chip->i2c, data->reg_mode_cntl, 1, 0);
if (ret < 0)
goto out;
dev_dbg(chip->dev, "set brightness %d\n", value);
@@ -85,7 +87,7 @@
struct max8925_chip *chip = data->chip;
int ret;
- ret = max8925_reg_read(chip->i2c, MAX8925_WLED_CNTL);
+ ret = max8925_reg_read(chip->i2c, data->reg_cntl);
if (ret < 0)
return -EINVAL;
data->current_brightness = ret;
@@ -102,69 +104,70 @@
static int __devinit max8925_backlight_probe(struct platform_device *pdev)
{
struct max8925_chip *chip = dev_get_drvdata(pdev->dev.parent);
- struct max8925_platform_data *max8925_pdata;
- struct max8925_backlight_pdata *pdata = NULL;
+ struct max8925_backlight_pdata *pdata = pdev->dev.platform_data;
struct max8925_backlight_data *data;
struct backlight_device *bl;
struct backlight_properties props;
struct resource *res;
- char name[MAX8925_NAME_SIZE];
unsigned char value;
- int ret;
-
- res = platform_get_resource(pdev, IORESOURCE_REG, 0);
- if (res == NULL) {
- dev_err(&pdev->dev, "No I/O resource!\n");
- return -EINVAL;
- }
-
- if (pdev->dev.parent->platform_data) {
- max8925_pdata = pdev->dev.parent->platform_data;
- pdata = max8925_pdata->backlight;
- }
-
- if (!pdata) {
- dev_err(&pdev->dev, "platform data isn't assigned to "
- "backlight\n");
- return -EINVAL;
- }
+ int ret = 0;
data = devm_kzalloc(&pdev->dev, sizeof(struct max8925_backlight_data),
GFP_KERNEL);
if (data == NULL)
return -ENOMEM;
- strncpy(name, res->name, MAX8925_NAME_SIZE);
+
+ res = platform_get_resource(pdev, IORESOURCE_REG, 0);
+ if (!res) {
+ dev_err(&pdev->dev, "No REG resource for mode control!\n");
+ ret = -ENXIO;
+ goto out;
+ }
+ data->reg_mode_cntl = res->start;
+ res = platform_get_resource(pdev, IORESOURCE_REG, 1);
+ if (!res) {
+ dev_err(&pdev->dev, "No REG resource for control!\n");
+ ret = -ENXIO;
+ goto out;
+ }
+ data->reg_cntl = res->start;
+
data->chip = chip;
data->current_brightness = 0;
memset(&props, 0, sizeof(struct backlight_properties));
props.type = BACKLIGHT_RAW;
props.max_brightness = MAX_BRIGHTNESS;
- bl = backlight_device_register(name, &pdev->dev, data,
+ bl = backlight_device_register("max8925-backlight", &pdev->dev, data,
&max8925_backlight_ops, &props);
if (IS_ERR(bl)) {
dev_err(&pdev->dev, "failed to register backlight\n");
- return PTR_ERR(bl);
+ ret = PTR_ERR(bl);
+ goto out;
}
bl->props.brightness = MAX_BRIGHTNESS;
platform_set_drvdata(pdev, bl);
value = 0;
- if (pdata->lxw_scl)
- value |= (1 << 7);
- if (pdata->lxw_freq)
- value |= (LWX_FREQ(pdata->lxw_freq) << 4);
- if (pdata->dual_string)
- value |= (1 << 1);
- ret = max8925_set_bits(chip->i2c, MAX8925_WLED_MODE_CNTL, 0xfe, value);
+ if (pdata) {
+ if (pdata->lxw_scl)
+ value |= (1 << 7);
+ if (pdata->lxw_freq)
+ value |= (LWX_FREQ(pdata->lxw_freq) << 4);
+ if (pdata->dual_string)
+ value |= (1 << 1);
+ }
+ ret = max8925_set_bits(chip->i2c, data->reg_mode_cntl, 0xfe, value);
if (ret < 0)
- goto out;
+ goto out_brt;
backlight_update_status(bl);
return 0;
-out:
+out_brt:
backlight_device_unregister(bl);
+out:
+ devm_kfree(&pdev->dev, data);
return ret;
}