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drm: msm: dsi: Don't attempt changing voltage of switches

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In some configurations the supplies are voltage switches and not LDOs,
making the set voltage call to fail. Check with the regulator framework
if the supply can change voltage before attempting.

Signed-off-by: Bjorn Andersson <bjorn.andersson@sonymobile.com>
Reviewed-by: Archit Taneja <architt@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
This commit is contained in:
Bjorn Andersson 2015-08-18 10:34:32 -07:00 committed by Rob Clark
parent 8217e97ab9
commit 556a76e51b
2 changed files with 2 additions and 2 deletions
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2
drivers/gpu/drm/msm/dsi/dsi_host.c
View File

@ -278,7 +278,7 @@ static int dsi_regulator_init(struct msm_dsi_host *msm_host)
}
for (i = 0; i < num; i++) {
if ((regs[i].min_voltage >= 0) && (regs[i].max_voltage >= 0)) {
if (regulator_can_change_voltage(s[i].consumer)) {
ret = regulator_set_voltage(s[i].consumer,
regs[i].min_voltage, regs[i].max_voltage);
if (ret < 0) {

2
drivers/gpu/drm/msm/dsi/phy/dsi_phy.c
View File

@ -178,7 +178,7 @@ static int dsi_phy_regulator_init(struct msm_dsi_phy *phy)
}
for (i = 0; i < num; i++) {
if ((regs[i].min_voltage >= 0) && (regs[i].max_voltage >= 0)) {
if (regulator_can_change_voltage(s[i].consumer)) {
ret = regulator_set_voltage(s[i].consumer,
regs[i].min_voltage, regs[i].max_voltage);
if (ret < 0) {