Create an init() op for dsi_phy which sets up things specific to
a given DSI PHY.
The dsi_phy driver probe expects every DSI version to get a
"dsi_phy_regulator" mmio base. This isn't the case for 8x96.
Creating an init() op will allow us to accommodate such
differences.
Signed-off-by: Archit Taneja <architt at codeaurora.org>
---
drivers/gpu/drm/msm/dsi/phy/dsi_phy.c | 33 ++++++++++++++++++-------
drivers/gpu/drm/msm/dsi/phy/dsi_phy.h | 2 ++
drivers/gpu/drm/msm/dsi/phy/dsi_phy_20nm.c | 1 +
drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm.c | 2 ++
drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm_8960.c | 1 +
5 files changed, 30 insertions(+), 9 deletions(-)
diff --git a/drivers/gpu/drm/msm/dsi/phy/dsi_phy.c
b/drivers/gpu/drm/msm/dsi/phy/dsi_phy.c
index f39386e..03a3549 100644
--- a/drivers/gpu/drm/msm/dsi/phy/dsi_phy.c
+++ b/drivers/gpu/drm/msm/dsi/phy/dsi_phy.c
@@ -295,6 +295,24 @@ static int dsi_phy_get_id(struct msm_dsi_phy *phy)
return -EINVAL;
}
+int msm_dsi_phy_init_common(struct msm_dsi_phy *phy)
+{
+ struct platform_device *pdev = phy->pdev;
+ int ret = 0;
+
+ phy->reg_base = msm_ioremap(pdev, "dsi_phy_regulator",
+ "DSI_PHY_REG");
+ if (IS_ERR(phy->reg_base)) {
+ dev_err(&pdev->dev, "%s: failed to map phy regulator base\n",
+ __func__);
+ ret = -ENOMEM;
+ goto fail;
+ }
+
+fail:
+ return ret;
+}
+
static int dsi_phy_driver_probe(struct platform_device *pdev)
{
struct msm_dsi_phy *phy;
@@ -331,15 +349,6 @@ static int dsi_phy_driver_probe(struct platform_device
*pdev)
goto fail;
}
- phy->reg_base = msm_ioremap(pdev, "dsi_phy_regulator",
- "DSI_PHY_REG");
- if (IS_ERR(phy->reg_base)) {
- dev_err(dev, "%s: failed to map phy regulator base\n",
- __func__);
- ret = -ENOMEM;
- goto fail;
- }
-
ret = dsi_phy_regulator_init(phy);
if (ret) {
dev_err(dev, "%s: failed to init regulator\n", __func__);
@@ -353,6 +362,12 @@ static int dsi_phy_driver_probe(struct platform_device
*pdev)
goto fail;
}
+ if (phy->cfg->ops.init) {
+ ret = phy->cfg->ops.init(phy);
+ if (ret)
+ goto fail;
+ }
+
/* PLL init will call into clk_register which requires
* register access, so we need to enable power and ahb clock.
*/
diff --git a/drivers/gpu/drm/msm/dsi/phy/dsi_phy.h
b/drivers/gpu/drm/msm/dsi/phy/dsi_phy.h
index f24a854..b9d7d02 100644
--- a/drivers/gpu/drm/msm/dsi/phy/dsi_phy.h
+++ b/drivers/gpu/drm/msm/dsi/phy/dsi_phy.h
@@ -22,6 +22,7 @@
#define dsi_phy_write(offset, data) msm_writel((data), (offset))
struct msm_dsi_phy_ops {
+ int (*init) (struct msm_dsi_phy *phy);
int (*enable)(struct msm_dsi_phy *phy, int src_pll_id,
const unsigned long bit_rate, const unsigned long esc_rate);
void (*disable)(struct msm_dsi_phy *phy);
@@ -87,6 +88,7 @@ int msm_dsi_dphy_timing_calc(struct msm_dsi_dphy_timing
*timing,
const unsigned long bit_rate, const unsigned long esc_rate);
void msm_dsi_phy_set_src_pll(struct msm_dsi_phy *phy, int pll_id, u32 reg,
u32 bit_mask);
+int msm_dsi_phy_init_common(struct msm_dsi_phy *phy);
#endif /* __DSI_PHY_H__ */
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 c757e20..c4a7be5 100644
--- a/drivers/gpu/drm/msm/dsi/phy/dsi_phy_20nm.c
+++ b/drivers/gpu/drm/msm/dsi/phy/dsi_phy_20nm.c
@@ -145,6 +145,7 @@ static void dsi_20nm_phy_disable(struct msm_dsi_phy *phy)
.ops = {
.enable = dsi_20nm_phy_enable,
.disable = dsi_20nm_phy_disable,
+ .init = msm_dsi_phy_init_common,
},
.io_start = { 0xfd998300, 0xfd9a0300 },
.num_dsi_phy = 2,
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 63d7fba..ea740c5 100644
--- a/drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm.c
+++ b/drivers/gpu/drm/msm/dsi/phy/dsi_phy_28nm.c
@@ -144,6 +144,7 @@ static void dsi_28nm_phy_disable(struct msm_dsi_phy *phy)
.ops = {
.enable = dsi_28nm_phy_enable,
.disable = dsi_28nm_phy_disable,
+ .init = msm_dsi_phy_init_common,
},
.io_start = { 0xfd922b00, 0xfd923100 },
.num_dsi_phy = 2,
@@ -161,6 +162,7 @@ static void dsi_28nm_phy_disable(struct msm_dsi_phy *phy)
.ops = {
.enable = dsi_28nm_phy_enable,
.disable = dsi_28nm_phy_disable,
+ .init = msm_dsi_phy_init_common,
},
.io_start = { 0x1a98500 },
.num_dsi_phy = 1,
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 7bdb9de..9aff0ba 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
@@ -191,6 +191,7 @@ static void dsi_28nm_phy_disable(struct msm_dsi_phy *phy)
.ops = {
.enable = dsi_28nm_phy_enable,
.disable = dsi_28nm_phy_disable,
+ .init = msm_dsi_phy_init_common,
},
.io_start = { 0x4700300, 0x5800300 },
.num_dsi_phy = 2,
--
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
hosted by The Linux Foundation
