Hi,
On 03/31/2016 12:23 AM, Mark Brown wrote:
The voltage changing code in this driver is broken and should be
removed. The driver sets a single, exact voltage on probe. Unless
there is a very good reason for this (which should be documented in
comments) constraints like this need to be set via the machine
constraints, voltage setting in a driver is expected to be used in cases
where the voltage varies at runtime.
In addition client drivers should almost never be calling
regulator_can_set_voltage(), if the device needs to set a voltage it
needs to set the voltage and the regulator core will handle the case
where the regulator is fixed voltage. If the driver simply skips
setting the voltage if it doesn't have permission then it shouild just
s/shouild/should
Could you also pull in the diff I've added below? It removes another
set_voltage call from the hdmi driver and the struct members used to
manage the voltage range.
not bother in the first place.
+John, you'll need to update your regulator nodes with the min/max
voltage values in your N7 dtsi whenever you plan to rebase next.
Thanks,
Archit
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
---
drivers/gpu/drm/msm/dsi/dsi_host.c | 12 ------------
1 file changed, 12 deletions(-)
diff --git a/drivers/gpu/drm/msm/dsi/dsi_host.c b/drivers/gpu/drm/msm/dsi/dsi_host.c
index 4282ec6bbaaf..a3e47ad83eb3 100644
--- a/drivers/gpu/drm/msm/dsi/dsi_host.c
+++ b/drivers/gpu/drm/msm/dsi/dsi_host.c
@@ -325,18 +325,6 @@ static int dsi_regulator_init(struct msm_dsi_host *msm_host)
return ret;
}
- for (i = 0; i < num; i++) {
- 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) {
- pr_err("regulator %d set voltage failed, %d\n",
- i, ret);
- return ret;
- }
- }
- }
-
return 0;
}
---8<---
diff --git a/drivers/gpu/drm/msm/dsi/dsi.h b/drivers/gpu/drm/msm/dsi/dsi.h
index 749fbb2..03f115f 100644
--- a/drivers/gpu/drm/msm/dsi/dsi.h
+++ b/drivers/gpu/drm/msm/dsi/dsi.h
@@ -41,8 +41,6 @@ enum msm_dsi_phy_type {
/* Regulators for DSI devices */
struct dsi_reg_entry {
char name[32];
- int min_voltage;
- int max_voltage;
int enable_load;
int disable_load;
};
diff --git a/drivers/gpu/drm/msm/dsi/dsi_cfg.c
b/drivers/gpu/drm/msm/dsi/dsi_cfg.c
index e58e9b9..cc802bb 100644
--- a/drivers/gpu/drm/msm/dsi/dsi_cfg.c
+++ b/drivers/gpu/drm/msm/dsi/dsi_cfg.c
@@ -22,9 +22,9 @@ static const struct msm_dsi_config apq8064_dsi_cfg = {
.reg_cfg = {
.num = 3,
.regs = {
- {"vdda", 1200000, 1200000, 100000, 100},
- {"avdd", 3000000, 3000000, 110000, 100},
- {"vddio", 1800000, 1800000, 100000, 100},
+ {"vdda", 100000, 100},
+ {"avdd", 10000, 100},
+ {"vddio", 100000, 100},
},
},
.bus_clk_names = dsi_v2_bus_clk_names,
@@ -40,10 +40,10 @@ static const struct msm_dsi_config
msm8974_apq8084_dsi_cfg = {
.reg_cfg = {
.num = 4,
.regs = {
- {"gdsc", -1, -1, -1, -1},
- {"vdd", 3000000, 3000000, 150000, 100},
- {"vdda", 1200000, 1200000, 100000, 100},
- {"vddio", 1800000, 1800000, 100000, 100},
+ {"gdsc", -1, -1},
+ {"vdd", 150000, 100},
+ {"vdda", 100000, 100},
+ {"vddio", 100000, 100},
},
},
.bus_clk_names = dsi_6g_bus_clk_names,
@@ -59,9 +59,9 @@ static const struct msm_dsi_config msm8916_dsi_cfg = {
.reg_cfg = {
.num = 3,
.regs = {
- {"gdsc", -1, -1, -1, -1},
- {"vdda", 1200000, 1200000, 100000, 100},
- {"vddio", 1800000, 1800000, 100000, 100},
+ {"gdsc", -1, -1},
+ {"vdda", 100000, 100},
+ {"vddio", 100000, 100},
},
},
.bus_clk_names = dsi_8916_bus_clk_names,
@@ -73,13 +73,13 @@ static const struct msm_dsi_config msm8994_dsi_cfg = {
.reg_cfg = {
.num = 7,
.regs = {
- {"gdsc", -1, -1, -1, -1},
- {"vdda", 1250000, 1250000, 100000, 100},
- {"vddio", 1800000, 1800000, 100000, 100},
- {"vcca", 1000000, 1000000, 10000, 100},
- {"vdd", 1800000, 1800000, 100000, 100},
- {"lab_reg", -1, -1, -1, -1},
- {"ibb_reg", -1, -1, -1, -1},
+ {"gdsc", -1, -1},
+ {"vdda", 100000, 100},
+ {"vddio", 100000, 100},
+ {"vcca", 10000, 100},
+ {"vdd", 100000, 100},
+ {"lab_reg", -1, -1},
+ {"ibb_reg", -1, -1},
},
},
.bus_clk_names = dsi_6g_bus_clk_names,
diff --git a/drivers/gpu/drm/msm/dsi/phy/dsi_phy.c
b/drivers/gpu/drm/msm/dsi/phy/dsi_phy.c
index 91a95fb..e2f42d8 100644
--- a/drivers/gpu/drm/msm/dsi/phy/dsi_phy.c
+++ b/drivers/gpu/drm/msm/dsi/phy/dsi_phy.c
@@ -177,19 +177,6 @@ static int dsi_phy_regulator_init(struct
msm_dsi_phy *phy)
return ret;
}
- for (i = 0; i < num; i++) {
- 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) {
- dev_err(dev,
- "regulator %d set voltage failed, %d\n",
- i, ret);
- return ret;
- }
- }
- }
-
return 0;
}
diff --git a/drivers/gpu/drm/msm/dsi/phy/dsi_phy_20nm.c
b/drivers/gpu/drm/msm/dsi/phy/dsi_phy_20nm.c
index 2e9ba11..3c93cfc 100644
--- a/drivers/gpu/drm/msm/dsi/phy/dsi_phy_20nm.c
+++ b/drivers/gpu/drm/msm/dsi/phy/dsi_phy_20nm.c
@@ -138,8 +138,8 @@ const struct msm_dsi_phy_cfg dsi_phy_20nm_cfgs = {
.reg_cfg = {
.num = 2,
.regs = {
- {"vddio", 1800000, 1800000, 100000, 100},
- {"vcca", 1000000, 1000000, 10000, 100},
+ {"vddio", 100000, 100},
+ {"vcca", 10000, 100},
},
},
.ops = {
diff --git a/drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm.c
b/drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm.c
index edf7411..397f09a 100644
--- a/drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm.c
+++ b/drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm.c
@@ -138,7 +138,7 @@ const struct msm_dsi_phy_cfg dsi_phy_28nm_hpm_cfgs = {
.reg_cfg = {
.num = 1,
.regs = {
- {"vddio", 1800000, 1800000, 100000, 100},
+ {"vddio", 100000, 100},
},
},
.ops = {
@@ -153,7 +153,7 @@ const struct msm_dsi_phy_cfg dsi_phy_28nm_lp_cfgs = {
.reg_cfg = {
.num = 1,
.regs = {
- {"vddio", 1800000, 1800000, 100000, 100},
+ {"vddio", 100000, 100},
},
},
.ops = {
diff --git a/drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm_8960.c
b/drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm_8960.c
index 197b039..4ed7b57 100644
--- a/drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm_8960.c
+++ b/drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm_8960.c
@@ -185,7 +185,7 @@ const struct msm_dsi_phy_cfg dsi_phy_28nm_8960_cfgs = {
.reg_cfg = {
.num = 1,
.regs = {
- {"vddio", 1800000, 1800000, 100000, 100},
+ {"vddio", 100000, 100},
},
},
.ops = {
--->8---
--
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