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path: root/drivers/gpu/drm/imx/imx-tve.c
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Diffstat (limited to 'drivers/gpu/drm/imx/imx-tve.c')
-rw-r--r--drivers/gpu/drm/imx/imx-tve.c18
1 files changed, 7 insertions, 11 deletions
diff --git a/drivers/gpu/drm/imx/imx-tve.c b/drivers/gpu/drm/imx/imx-tve.c
index 3b602ee33c44..4826bb781723 100644
--- a/drivers/gpu/drm/imx/imx-tve.c
+++ b/drivers/gpu/drm/imx/imx-tve.c
@@ -98,6 +98,8 @@
/* TVE_TST_MODE_REG */
#define TVE_TVDAC_TEST_MODE_MASK (0x7 << 0)
+#define IMX_TVE_DAC_VOLTAGE 2750000
+
enum {
TVE_MODE_TVOUT,
TVE_MODE_VGA,
@@ -150,13 +152,11 @@ __releases(&tve->lock)
static void tve_enable(struct imx_tve *tve)
{
- int ret;
-
if (!tve->enabled) {
tve->enabled = true;
clk_prepare_enable(tve->clk);
- ret = regmap_update_bits(tve->regmap, TVE_COM_CONF_REG,
- TVE_EN, TVE_EN);
+ regmap_update_bits(tve->regmap, TVE_COM_CONF_REG,
+ TVE_EN, TVE_EN);
}
/* clear interrupt status register */
@@ -174,12 +174,9 @@ static void tve_enable(struct imx_tve *tve)
static void tve_disable(struct imx_tve *tve)
{
- int ret;
-
if (tve->enabled) {
tve->enabled = false;
- ret = regmap_update_bits(tve->regmap, TVE_COM_CONF_REG,
- TVE_EN, 0);
+ regmap_update_bits(tve->regmap, TVE_COM_CONF_REG, TVE_EN, 0);
clk_disable_unprepare(tve->clk);
}
}
@@ -621,9 +618,8 @@ static int imx_tve_bind(struct device *dev, struct device *master, void *data)
tve->dac_reg = devm_regulator_get(dev, "dac");
if (!IS_ERR(tve->dac_reg)) {
- ret = regulator_set_voltage(tve->dac_reg, 2750000, 2750000);
- if (ret)
- return ret;
+ if (regulator_get_voltage(tve->dac_reg) != IMX_TVE_DAC_VOLTAGE)
+ dev_warn(dev, "dac voltage is not %d uV\n", IMX_TVE_DAC_VOLTAGE);
ret = regulator_enable(tve->dac_reg);
if (ret)
return ret;