[Intel-gfx] [PATCH 1/7] drm/i915: remove SDV support from lpt_pch_init_refclk
Paulo Zanoni
przanoni at gmail.com
Fri Jul 12 19:19:36 CEST 2013
From: Paulo Zanoni <paulo.r.zanoni at intel.com>
The machines that fall in the "is_sdv" case are some very early
pre-production steppings. This patch may break VGA output after
suspend/resume on these machines.
Even the documentation for the is_sdv cases was removed from BSpec.
Signed-off-by: Paulo Zanoni <paulo.r.zanoni at intel.com>
---
drivers/gpu/drm/i915/intel_display.c | 104 ++++++++++++-----------------------
1 file changed, 34 insertions(+), 70 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index c79addd..5821ffc 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -5170,7 +5170,6 @@ static void lpt_init_pch_refclk(struct drm_device *dev)
struct drm_mode_config *mode_config = &dev->mode_config;
struct intel_encoder *encoder;
bool has_vga = false;
- bool is_sdv = false;
u32 tmp;
list_for_each_entry(encoder, &mode_config->encoder_list, base.head) {
@@ -5186,10 +5185,6 @@ static void lpt_init_pch_refclk(struct drm_device *dev)
mutex_lock(&dev_priv->dpio_lock);
- /* XXX: Rip out SDV support once Haswell ships for real. */
- if (IS_HASWELL(dev) && (dev->pci_device & 0xFF00) == 0x0C00)
- is_sdv = true;
-
tmp = intel_sbi_read(dev_priv, SBI_SSCCTL, SBI_ICLK);
tmp &= ~SBI_SSCCTL_DISABLE;
tmp |= SBI_SSCCTL_PATHALT;
@@ -5201,36 +5196,27 @@ static void lpt_init_pch_refclk(struct drm_device *dev)
tmp &= ~SBI_SSCCTL_PATHALT;
intel_sbi_write(dev_priv, SBI_SSCCTL, tmp, SBI_ICLK);
- if (!is_sdv) {
- tmp = I915_READ(SOUTH_CHICKEN2);
- tmp |= FDI_MPHY_IOSFSB_RESET_CTL;
- I915_WRITE(SOUTH_CHICKEN2, tmp);
+ tmp = I915_READ(SOUTH_CHICKEN2);
+ tmp |= FDI_MPHY_IOSFSB_RESET_CTL;
+ I915_WRITE(SOUTH_CHICKEN2, tmp);
- if (wait_for_atomic_us(I915_READ(SOUTH_CHICKEN2) &
- FDI_MPHY_IOSFSB_RESET_STATUS, 100))
- DRM_ERROR("FDI mPHY reset assert timeout\n");
+ if (wait_for_atomic_us(I915_READ(SOUTH_CHICKEN2) &
+ FDI_MPHY_IOSFSB_RESET_STATUS, 100))
+ DRM_ERROR("FDI mPHY reset assert timeout\n");
- tmp = I915_READ(SOUTH_CHICKEN2);
- tmp &= ~FDI_MPHY_IOSFSB_RESET_CTL;
- I915_WRITE(SOUTH_CHICKEN2, tmp);
+ tmp = I915_READ(SOUTH_CHICKEN2);
+ tmp &= ~FDI_MPHY_IOSFSB_RESET_CTL;
+ I915_WRITE(SOUTH_CHICKEN2, tmp);
- if (wait_for_atomic_us((I915_READ(SOUTH_CHICKEN2) &
- FDI_MPHY_IOSFSB_RESET_STATUS) == 0,
- 100))
- DRM_ERROR("FDI mPHY reset de-assert timeout\n");
- }
+ if (wait_for_atomic_us((I915_READ(SOUTH_CHICKEN2) &
+ FDI_MPHY_IOSFSB_RESET_STATUS) == 0, 100))
+ DRM_ERROR("FDI mPHY reset de-assert timeout\n");
tmp = intel_sbi_read(dev_priv, 0x8008, SBI_MPHY);
tmp &= ~(0xFF << 24);
tmp |= (0x12 << 24);
intel_sbi_write(dev_priv, 0x8008, tmp, SBI_MPHY);
- if (is_sdv) {
- tmp = intel_sbi_read(dev_priv, 0x800C, SBI_MPHY);
- tmp |= 0x7FFF;
- intel_sbi_write(dev_priv, 0x800C, tmp, SBI_MPHY);
- }
-
tmp = intel_sbi_read(dev_priv, 0x2008, SBI_MPHY);
tmp |= (1 << 11);
intel_sbi_write(dev_priv, 0x2008, tmp, SBI_MPHY);
@@ -5239,24 +5225,6 @@ static void lpt_init_pch_refclk(struct drm_device *dev)
tmp |= (1 << 11);
intel_sbi_write(dev_priv, 0x2108, tmp, SBI_MPHY);
- if (is_sdv) {
- tmp = intel_sbi_read(dev_priv, 0x2038, SBI_MPHY);
- tmp |= (0x3F << 24) | (0xF << 20) | (0xF << 16);
- intel_sbi_write(dev_priv, 0x2038, tmp, SBI_MPHY);
-
- tmp = intel_sbi_read(dev_priv, 0x2138, SBI_MPHY);
- tmp |= (0x3F << 24) | (0xF << 20) | (0xF << 16);
- intel_sbi_write(dev_priv, 0x2138, tmp, SBI_MPHY);
-
- tmp = intel_sbi_read(dev_priv, 0x203C, SBI_MPHY);
- tmp |= (0x3F << 8);
- intel_sbi_write(dev_priv, 0x203C, tmp, SBI_MPHY);
-
- tmp = intel_sbi_read(dev_priv, 0x213C, SBI_MPHY);
- tmp |= (0x3F << 8);
- intel_sbi_write(dev_priv, 0x213C, tmp, SBI_MPHY);
- }
-
tmp = intel_sbi_read(dev_priv, 0x206C, SBI_MPHY);
tmp |= (1 << 24) | (1 << 21) | (1 << 18);
intel_sbi_write(dev_priv, 0x206C, tmp, SBI_MPHY);
@@ -5265,17 +5233,15 @@ static void lpt_init_pch_refclk(struct drm_device *dev)
tmp |= (1 << 24) | (1 << 21) | (1 << 18);
intel_sbi_write(dev_priv, 0x216C, tmp, SBI_MPHY);
- if (!is_sdv) {
- tmp = intel_sbi_read(dev_priv, 0x2080, SBI_MPHY);
- tmp &= ~(7 << 13);
- tmp |= (5 << 13);
- intel_sbi_write(dev_priv, 0x2080, tmp, SBI_MPHY);
+ tmp = intel_sbi_read(dev_priv, 0x2080, SBI_MPHY);
+ tmp &= ~(7 << 13);
+ tmp |= (5 << 13);
+ intel_sbi_write(dev_priv, 0x2080, tmp, SBI_MPHY);
- tmp = intel_sbi_read(dev_priv, 0x2180, SBI_MPHY);
- tmp &= ~(7 << 13);
- tmp |= (5 << 13);
- intel_sbi_write(dev_priv, 0x2180, tmp, SBI_MPHY);
- }
+ tmp = intel_sbi_read(dev_priv, 0x2180, SBI_MPHY);
+ tmp &= ~(7 << 13);
+ tmp |= (5 << 13);
+ intel_sbi_write(dev_priv, 0x2180, tmp, SBI_MPHY);
tmp = intel_sbi_read(dev_priv, 0x208C, SBI_MPHY);
tmp &= ~0xFF;
@@ -5297,25 +5263,23 @@ static void lpt_init_pch_refclk(struct drm_device *dev)
tmp |= (0x1C << 16);
intel_sbi_write(dev_priv, 0x2198, tmp, SBI_MPHY);
- if (!is_sdv) {
- tmp = intel_sbi_read(dev_priv, 0x20C4, SBI_MPHY);
- tmp |= (1 << 27);
- intel_sbi_write(dev_priv, 0x20C4, tmp, SBI_MPHY);
+ tmp = intel_sbi_read(dev_priv, 0x20C4, SBI_MPHY);
+ tmp |= (1 << 27);
+ intel_sbi_write(dev_priv, 0x20C4, tmp, SBI_MPHY);
- tmp = intel_sbi_read(dev_priv, 0x21C4, SBI_MPHY);
- tmp |= (1 << 27);
- intel_sbi_write(dev_priv, 0x21C4, tmp, SBI_MPHY);
+ tmp = intel_sbi_read(dev_priv, 0x21C4, SBI_MPHY);
+ tmp |= (1 << 27);
+ intel_sbi_write(dev_priv, 0x21C4, tmp, SBI_MPHY);
- tmp = intel_sbi_read(dev_priv, 0x20EC, SBI_MPHY);
- tmp &= ~(0xF << 28);
- tmp |= (4 << 28);
- intel_sbi_write(dev_priv, 0x20EC, tmp, SBI_MPHY);
+ tmp = intel_sbi_read(dev_priv, 0x20EC, SBI_MPHY);
+ tmp &= ~(0xF << 28);
+ tmp |= (4 << 28);
+ intel_sbi_write(dev_priv, 0x20EC, tmp, SBI_MPHY);
- tmp = intel_sbi_read(dev_priv, 0x21EC, SBI_MPHY);
- tmp &= ~(0xF << 28);
- tmp |= (4 << 28);
- intel_sbi_write(dev_priv, 0x21EC, tmp, SBI_MPHY);
- }
+ tmp = intel_sbi_read(dev_priv, 0x21EC, SBI_MPHY);
+ tmp &= ~(0xF << 28);
+ tmp |= (4 << 28);
+ intel_sbi_write(dev_priv, 0x21EC, tmp, SBI_MPHY);
/* ULT uses SBI_GEN0, but ULT doesn't have VGA, so we don't care. */
tmp = intel_sbi_read(dev_priv, SBI_DBUFF0, SBI_ICLK);
--
1.8.1.2
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