v2: Rebased on latest code
Signed-off-by: Shobhit Kumar <shobhit.kumar@xxxxxxxxx>
Signed-off-by: Yogesh Mohan Marimuthu <yogesh.mohan.marimuthu@xxxxxxxxx>
Reviewed-by: Jani Nikula<jani.nikula@xxxxxxxxx>
---
drivers/gpu/drm/i915/i915_drv.h | 2 ++
drivers/gpu/drm/i915/i915_reg.h | 1 +
drivers/gpu/drm/i915/intel_dsi.c | 47 ++++++-----------------------------
drivers/gpu/drm/i915/intel_sideband.c | 14 +++++++++++
4 files changed, 25 insertions(+), 39 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 64ed8f4..4bcf1d4 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -2467,6 +2467,8 @@ u32 intel_sbi_read(struct drm_i915_private *dev_priv, u16 reg,
enum intel_sbi_destination destination);
void intel_sbi_write(struct drm_i915_private *dev_priv, u16 reg, u32 value,
enum intel_sbi_destination destination);
+u32 vlv_flisdsi_read(struct drm_i915_private *dev_priv, u32 reg);
+void vlv_flisdsi_write(struct drm_i915_private *dev_priv, u32 reg, u32 val);
int vlv_gpu_freq(struct drm_i915_private *dev_priv, int val);
int vlv_freq_opcode(struct drm_i915_private *dev_priv, int val);
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index 3be449d..5233749 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -362,6 +362,7 @@
#define IOSF_PORT_CCK 0x14
#define IOSF_PORT_CCU 0xA9
#define IOSF_PORT_GPS_CORE 0x48
+#define IOSF_PORT_FLISDSI 0x1B
#define VLV_IOSF_DATA (VLV_DISPLAY_BASE + 0x2104)
#define VLV_IOSF_ADDR (VLV_DISPLAY_BASE + 0x2108)
diff --git a/drivers/gpu/drm/i915/intel_dsi.c b/drivers/gpu/drm/i915/intel_dsi.c
index 42ed28a..1016e7b 100644
--- a/drivers/gpu/drm/i915/intel_dsi.c
+++ b/drivers/gpu/drm/i915/intel_dsi.c
@@ -37,49 +37,18 @@
static const struct intel_dsi_device intel_dsi_devices[] = {
};
-
-static void vlv_cck_modify(struct drm_i915_private *dev_priv, u32 reg, u32 val,
- u32 mask)
-{
- u32 tmp = vlv_cck_read(dev_priv, reg);
- tmp &= ~mask;
- tmp |= val;
- vlv_cck_write(dev_priv, reg, tmp);
-}
-
-static void band_gap_wa(struct drm_i915_private *dev_priv)
+static void band_gap_reset(struct drm_i915_private *dev_priv)
{
mutex_lock(&dev_priv->dpio_lock);
- /* Enable bandgap fix in GOP driver */
- vlv_cck_modify(dev_priv, 0x6D, 0x00010000, 0x00030000);
- msleep(20);
- vlv_cck_modify(dev_priv, 0x6E, 0x00010000, 0x00030000);
- msleep(20);
- vlv_cck_modify(dev_priv, 0x6F, 0x00010000, 0x00030000);
- msleep(20);
- vlv_cck_modify(dev_priv, 0x00, 0x00008000, 0x00008000);
- msleep(20);
- vlv_cck_modify(dev_priv, 0x00, 0x00000000, 0x00008000);
- msleep(20);
-
- /* Turn Display Trunk on */
- vlv_cck_modify(dev_priv, 0x6B, 0x00020000, 0x00030000);
- msleep(20);
-
- vlv_cck_modify(dev_priv, 0x6C, 0x00020000, 0x00030000);
- msleep(20);
-
- vlv_cck_modify(dev_priv, 0x6D, 0x00020000, 0x00030000);
- msleep(20);
- vlv_cck_modify(dev_priv, 0x6E, 0x00020000, 0x00030000);
- msleep(20);
- vlv_cck_modify(dev_priv, 0x6F, 0x00020000, 0x00030000);
+ vlv_flisdsi_write(dev_priv, 0x08, 0x0001);
+ vlv_flisdsi_write(dev_priv, 0x0F, 0x0005);
+ vlv_flisdsi_write(dev_priv, 0x0F, 0x0025);
+ udelay(150);
+ vlv_flisdsi_write(dev_priv, 0x0F, 0x0000);
+ vlv_flisdsi_write(dev_priv, 0x08, 0x0000);
mutex_unlock(&dev_priv->dpio_lock);
-
- /* Need huge delay, otherwise clock is not stable */
- msleep(100);
}
static struct intel_dsi *intel_attached_dsi(struct drm_connector *connector)
@@ -364,7 +333,7 @@ static void intel_dsi_mode_set(struct intel_encoder *intel_encoder)
vlv_enable_dsi_pll(intel_encoder);
/* XXX: Location of the call */
- band_gap_wa(dev_priv);
+ band_gap_reset(dev_priv);
/* escape clock divider, 20MHz, shared for A and C. device ready must be
* off when doing this! txclkesc? */
diff --git a/drivers/gpu/drm/i915/intel_sideband.c b/drivers/gpu/drm/i915/intel_sideband.c
index cc6fbcd..0954f13 100644
--- a/drivers/gpu/drm/i915/intel_sideband.c
+++ b/drivers/gpu/drm/i915/intel_sideband.c
@@ -249,3 +249,17 @@ void intel_sbi_write(struct drm_i915_private *dev_priv, u16 reg, u32 value,
return;
}
}
+
+u32 vlv_flisdsi_read(struct drm_i915_private *dev_priv, u32 reg)
+{
+ u32 val = 0;
+ vlv_sideband_rw(dev_priv, DPIO_DEVFN, IOSF_PORT_FLISDSI,
+ DPIO_OPCODE_REG_READ, reg, &val);
+ return val;
+}
+
+void vlv_flisdsi_write(struct drm_i915_private *dev_priv, u32 reg, u32 val)
+{
+ vlv_sideband_rw(dev_priv, DPIO_DEVFN, IOSF_PORT_FLISDSI,
+ DPIO_OPCODE_REG_WRITE, reg, &val);
+}
--
1.8.3.2
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