From: Grazvydas Ignotas <notasas@gmail.com>
Date: Sun, 22 May 2016 22:16:48 +0000 (+0300)
Subject: OMAPDSS: TPO-TD03MTEA1: add vdd regulator
X-Git-Tag: sz_175~18
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=fdae4a3d59781a7c9dbcd4211520a210879d7b9e;p=pandora-kernel.git

OMAPDSS: TPO-TD03MTEA1: add vdd regulator

It's for CC units, where vdd comes from regen controlled 5V supply.
On Rebirth/1GHz vdd is controlled by vaux1 (vcc).
---

diff --git a/drivers/video/omap2/displays/panel-tpo-td043mtea1.c b/drivers/video/omap2/displays/panel-tpo-td043mtea1.c
index 1c7254f1bea0..0c6aca1b492c 100644
--- a/drivers/video/omap2/displays/panel-tpo-td043mtea1.c
+++ b/drivers/video/omap2/displays/panel-tpo-td043mtea1.c
@@ -53,6 +53,7 @@ static const u16 tpo_td043_def_gamma[12] = {
 struct tpo_td043_device {
 	struct spi_device *spi;
 	struct regulator *vcc_reg;
+	struct regulator *vdd_reg;
 	int nreset_gpio;
 	u16 gamma[12];
 	u32 mode;
@@ -281,6 +282,7 @@ static int tpo_td043_power_on(struct tpo_td043_device *tpo_td043)
 		return 0;
 
 	regulator_enable(tpo_td043->vcc_reg);
+	regulator_enable(tpo_td043->vdd_reg);
 
 	/* wait for regulator to stabilize */
 	msleep(160);
@@ -319,6 +321,7 @@ static void tpo_td043_power_off(struct tpo_td043_device *tpo_td043)
 
 	tpo_td043_write(tpo_td043->spi, 3, TPO_R03_VAL_STANDBY);
 
+	regulator_disable(tpo_td043->vdd_reg);
 	regulator_disable(tpo_td043->vcc_reg);
 
 	tpo_td043->powered_on = 0;
@@ -439,6 +442,13 @@ static int tpo_td043_probe(struct omap_dss_device *dssdev)
 		goto fail_regulator;
 	}
 
+	tpo_td043->vdd_reg = regulator_get(&dssdev->dev, "vdd");
+	if (IS_ERR(tpo_td043->vdd_reg)) {
+		dev_err(&dssdev->dev, "failed to get LCD VDD regulator\n");
+		ret = PTR_ERR(tpo_td043->vdd_reg);
+		goto fail_vdd_regulator;
+	}
+
 	if (gpio_is_valid(nreset_gpio)) {
 		ret = gpio_request(nreset_gpio, "lcd reset");
 		if (ret < 0) {
@@ -462,6 +472,8 @@ static int tpo_td043_probe(struct omap_dss_device *dssdev)
 fail_gpio_direction:
 	gpio_free(nreset_gpio);
 fail_gpio_req:
+	regulator_put(tpo_td043->vdd_reg);
+fail_vdd_regulator:
 	regulator_put(tpo_td043->vcc_reg);
 fail_regulator:
 	kfree(tpo_td043);
@@ -476,6 +488,7 @@ static void tpo_td043_remove(struct omap_dss_device *dssdev)
 	dev_dbg(&dssdev->dev, "remove\n");
 
 	sysfs_remove_group(&dssdev->dev.kobj, &tpo_td043_attr_group);
+	regulator_put(tpo_td043->vdd_reg);
 	regulator_put(tpo_td043->vcc_reg);
 	if (gpio_is_valid(nreset_gpio))
 		gpio_free(nreset_gpio);