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drm/i915/display/fdi: use intel_de_rmw if possible

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The helper makes the code more compact and readable.

Signed-off-by: Andrzej Hajda <andrzej.hajda@intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20221215125610.1161729-1-andrzej.hajda@intel.com
This commit is contained in:
Andrzej Hajda 2022-12-15 13:56:10 +01:00 committed by Jani Nikula
parent 2b6f7e39cc
commit 60bb4478f7
1 changed files with 44 additions and 104 deletions
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148
drivers/gpu/drm/i915/display/intel_fdi.c
View file

@ -439,19 +439,11 @@ static void ilk_fdi_link_train(struct intel_crtc *crtc,
drm_err(&dev_priv->drm, "FDI train 1 fail!\n");
/* Train 2 */
reg = FDI_TX_CTL(pipe);
temp = intel_de_read(dev_priv, reg);
temp &= ~FDI_LINK_TRAIN_NONE;
temp |= FDI_LINK_TRAIN_PATTERN_2;
intel_de_write(dev_priv, reg, temp);
reg = FDI_RX_CTL(pipe);
temp = intel_de_read(dev_priv, reg);
temp &= ~FDI_LINK_TRAIN_NONE;
temp |= FDI_LINK_TRAIN_PATTERN_2;
intel_de_write(dev_priv, reg, temp);
intel_de_posting_read(dev_priv, reg);
intel_de_rmw(dev_priv, FDI_TX_CTL(pipe),
FDI_LINK_TRAIN_NONE, FDI_LINK_TRAIN_PATTERN_2);
intel_de_rmw(dev_priv, FDI_RX_CTL(pipe),
FDI_LINK_TRAIN_NONE, FDI_LINK_TRAIN_PATTERN_2);
intel_de_posting_read(dev_priv, FDI_RX_CTL(pipe));
udelay(150);
reg = FDI_RX_IIR(pipe);
@ -538,13 +530,9 @@ static void gen6_fdi_link_train(struct intel_crtc *crtc,
udelay(150);
for (i = 0; i < 4; i++) {
reg = FDI_TX_CTL(pipe);
temp = intel_de_read(dev_priv, reg);
temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
temp |= snb_b_fdi_train_param[i];
intel_de_write(dev_priv, reg, temp);
intel_de_posting_read(dev_priv, reg);
intel_de_rmw(dev_priv, FDI_TX_CTL(pipe),
FDI_LINK_TRAIN_VOL_EMP_MASK, snb_b_fdi_train_param[i]);
intel_de_posting_read(dev_priv, FDI_TX_CTL(pipe));
udelay(500);
for (retry = 0; retry < 5; retry++) {
@ -593,13 +581,9 @@ static void gen6_fdi_link_train(struct intel_crtc *crtc,
udelay(150);
for (i = 0; i < 4; i++) {
reg = FDI_TX_CTL(pipe);
temp = intel_de_read(dev_priv, reg);
temp &= ~FDI_LINK_TRAIN_VOL_EMP_MASK;
temp |= snb_b_fdi_train_param[i];
intel_de_write(dev_priv, reg, temp);
intel_de_posting_read(dev_priv, reg);
intel_de_rmw(dev_priv, FDI_TX_CTL(pipe),
FDI_LINK_TRAIN_VOL_EMP_MASK, snb_b_fdi_train_param[i]);
intel_de_posting_read(dev_priv, FDI_TX_CTL(pipe));
udelay(500);
for (retry = 0; retry < 5; retry++) {
@ -719,19 +703,13 @@ static void ivb_manual_fdi_link_train(struct intel_crtc *crtc,
}
/* Train 2 */
reg = FDI_TX_CTL(pipe);
temp = intel_de_read(dev_priv, reg);
temp &= ~FDI_LINK_TRAIN_NONE_IVB;
temp |= FDI_LINK_TRAIN_PATTERN_2_IVB;
intel_de_write(dev_priv, reg, temp);
reg = FDI_RX_CTL(pipe);
temp = intel_de_read(dev_priv, reg);
temp &= ~FDI_LINK_TRAIN_PATTERN_MASK_CPT;
temp |= FDI_LINK_TRAIN_PATTERN_2_CPT;
intel_de_write(dev_priv, reg, temp);
intel_de_posting_read(dev_priv, reg);
intel_de_rmw(dev_priv, FDI_TX_CTL(pipe),
FDI_LINK_TRAIN_NONE_IVB,
FDI_LINK_TRAIN_PATTERN_2_IVB);
intel_de_rmw(dev_priv, FDI_RX_CTL(pipe),
FDI_LINK_TRAIN_PATTERN_MASK_CPT,
FDI_LINK_TRAIN_PATTERN_2_CPT);
intel_de_posting_read(dev_priv, FDI_RX_CTL(pipe));
udelay(2); /* should be 1.5us */
for (i = 0; i < 4; i++) {
@ -837,9 +815,8 @@ void hsw_fdi_link_train(struct intel_encoder *encoder,
udelay(30);
/* Unset FDI_RX_MISC pwrdn lanes */
temp = intel_de_read(dev_priv, FDI_RX_MISC(PIPE_A));
temp &= ~(FDI_RX_PWRDN_LANE1_MASK | FDI_RX_PWRDN_LANE0_MASK);
intel_de_write(dev_priv, FDI_RX_MISC(PIPE_A), temp);
intel_de_rmw(dev_priv, FDI_RX_MISC(PIPE_A),
FDI_RX_PWRDN_LANE1_MASK | FDI_RX_PWRDN_LANE0_MASK, 0);
intel_de_posting_read(dev_priv, FDI_RX_MISC(PIPE_A));
/* Wait for FDI auto training time */
@ -865,25 +842,21 @@ void hsw_fdi_link_train(struct intel_encoder *encoder,
intel_de_write(dev_priv, FDI_RX_CTL(PIPE_A), rx_ctl_val);
intel_de_posting_read(dev_priv, FDI_RX_CTL(PIPE_A));
temp = intel_de_read(dev_priv, DDI_BUF_CTL(PORT_E));
temp &= ~DDI_BUF_CTL_ENABLE;
intel_de_write(dev_priv, DDI_BUF_CTL(PORT_E), temp);
intel_de_rmw(dev_priv, DDI_BUF_CTL(PORT_E), DDI_BUF_CTL_ENABLE, 0);
intel_de_posting_read(dev_priv, DDI_BUF_CTL(PORT_E));
/* Disable DP_TP_CTL and FDI_RX_CTL and retry */
temp = intel_de_read(dev_priv, DP_TP_CTL(PORT_E));
temp &= ~(DP_TP_CTL_ENABLE | DP_TP_CTL_LINK_TRAIN_MASK);
temp |= DP_TP_CTL_LINK_TRAIN_PAT1;
intel_de_write(dev_priv, DP_TP_CTL(PORT_E), temp);
intel_de_rmw(dev_priv, DP_TP_CTL(PORT_E),
DP_TP_CTL_ENABLE | DP_TP_CTL_LINK_TRAIN_MASK,
DP_TP_CTL_LINK_TRAIN_PAT1);
intel_de_posting_read(dev_priv, DP_TP_CTL(PORT_E));
intel_wait_ddi_buf_idle(dev_priv, PORT_E);
/* Reset FDI_RX_MISC pwrdn lanes */
temp = intel_de_read(dev_priv, FDI_RX_MISC(PIPE_A));
temp &= ~(FDI_RX_PWRDN_LANE1_MASK | FDI_RX_PWRDN_LANE0_MASK);
temp |= FDI_RX_PWRDN_LANE1_VAL(2) | FDI_RX_PWRDN_LANE0_VAL(2);
intel_de_write(dev_priv, FDI_RX_MISC(PIPE_A), temp);
intel_de_rmw(dev_priv, FDI_RX_MISC(PIPE_A),
FDI_RX_PWRDN_LANE1_MASK | FDI_RX_PWRDN_LANE0_MASK,
FDI_RX_PWRDN_LANE1_VAL(2) | FDI_RX_PWRDN_LANE0_VAL(2));
intel_de_posting_read(dev_priv, FDI_RX_MISC(PIPE_A));
}
@ -898,7 +871,6 @@ void hsw_fdi_link_train(struct intel_encoder *encoder,
void hsw_fdi_disable(struct intel_encoder *encoder)
{
struct drm_i915_private *dev_priv = to_i915(encoder->base.dev);
u32 val;
/*
* Bspec lists this as both step 13 (before DDI_BUF_CTL disable)
@ -906,30 +878,15 @@ void hsw_fdi_disable(struct intel_encoder *encoder)
* step 13 is the correct place for it. Step 18 is where it was
* originally before the BUN.
*/
val = intel_de_read(dev_priv, FDI_RX_CTL(PIPE_A));
val &= ~FDI_RX_ENABLE;
intel_de_write(dev_priv, FDI_RX_CTL(PIPE_A), val);
val = intel_de_read(dev_priv, DDI_BUF_CTL(PORT_E));
val &= ~DDI_BUF_CTL_ENABLE;
intel_de_write(dev_priv, DDI_BUF_CTL(PORT_E), val);
intel_de_rmw(dev_priv, FDI_RX_CTL(PIPE_A), FDI_RX_ENABLE, 0);
intel_de_rmw(dev_priv, DDI_BUF_CTL(PORT_E), DDI_BUF_CTL_ENABLE, 0);
intel_wait_ddi_buf_idle(dev_priv, PORT_E);
intel_ddi_disable_clock(encoder);
val = intel_de_read(dev_priv, FDI_RX_MISC(PIPE_A));
val &= ~(FDI_RX_PWRDN_LANE1_MASK | FDI_RX_PWRDN_LANE0_MASK);
val |= FDI_RX_PWRDN_LANE1_VAL(2) | FDI_RX_PWRDN_LANE0_VAL(2);
intel_de_write(dev_priv, FDI_RX_MISC(PIPE_A), val);
val = intel_de_read(dev_priv, FDI_RX_CTL(PIPE_A));
val &= ~FDI_PCDCLK;
intel_de_write(dev_priv, FDI_RX_CTL(PIPE_A), val);
val = intel_de_read(dev_priv, FDI_RX_CTL(PIPE_A));
val &= ~FDI_RX_PLL_ENABLE;
intel_de_write(dev_priv, FDI_RX_CTL(PIPE_A), val);
intel_de_rmw(dev_priv, FDI_RX_MISC(PIPE_A),
FDI_RX_PWRDN_LANE1_MASK | FDI_RX_PWRDN_LANE0_MASK,
FDI_RX_PWRDN_LANE1_VAL(2) | FDI_RX_PWRDN_LANE0_VAL(2));
intel_de_rmw(dev_priv, FDI_RX_CTL(PIPE_A), FDI_PCDCLK, 0);
intel_de_rmw(dev_priv, FDI_RX_CTL(PIPE_A), FDI_RX_PLL_ENABLE, 0);
}
void ilk_fdi_pll_enable(const struct intel_crtc_state *crtc_state)
@ -952,9 +909,7 @@ void ilk_fdi_pll_enable(const struct intel_crtc_state *crtc_state)
udelay(200);
/* Switch from Rawclk to PCDclk */
temp = intel_de_read(dev_priv, reg);
intel_de_write(dev_priv, reg, temp | FDI_PCDCLK);
intel_de_rmw(dev_priv, reg, 0, FDI_PCDCLK);
intel_de_posting_read(dev_priv, reg);
udelay(200);
@ -974,28 +929,18 @@ void ilk_fdi_pll_disable(struct intel_crtc *crtc)
struct drm_device *dev = crtc->base.dev;
struct drm_i915_private *dev_priv = to_i915(dev);
enum pipe pipe = crtc->pipe;
i915_reg_t reg;
u32 temp;
/* Switch from PCDclk to Rawclk */
reg = FDI_RX_CTL(pipe);
temp = intel_de_read(dev_priv, reg);
intel_de_write(dev_priv, reg, temp & ~FDI_PCDCLK);
intel_de_rmw(dev_priv, FDI_RX_CTL(pipe), FDI_PCDCLK, 0);
/* Disable CPU FDI TX PLL */
reg = FDI_TX_CTL(pipe);
temp = intel_de_read(dev_priv, reg);
intel_de_write(dev_priv, reg, temp & ~FDI_TX_PLL_ENABLE);
intel_de_posting_read(dev_priv, reg);
intel_de_rmw(dev_priv, FDI_TX_CTL(pipe), FDI_TX_PLL_ENABLE, 0);
intel_de_posting_read(dev_priv, FDI_TX_CTL(pipe));
udelay(100);
reg = FDI_RX_CTL(pipe);
temp = intel_de_read(dev_priv, reg);
intel_de_write(dev_priv, reg, temp & ~FDI_RX_PLL_ENABLE);
/* Wait for the clocks to turn off. */
intel_de_posting_read(dev_priv, reg);
intel_de_rmw(dev_priv, FDI_RX_CTL(pipe), FDI_RX_PLL_ENABLE, 0);
intel_de_posting_read(dev_priv, FDI_RX_CTL(pipe));
udelay(100);
}
@ -1007,10 +952,8 @@ void ilk_fdi_disable(struct intel_crtc *crtc)
u32 temp;
/* disable CPU FDI tx and PCH FDI rx */
reg = FDI_TX_CTL(pipe);
temp = intel_de_read(dev_priv, reg);
intel_de_write(dev_priv, reg, temp & ~FDI_TX_ENABLE);
intel_de_posting_read(dev_priv, reg);
intel_de_rmw(dev_priv, FDI_TX_CTL(pipe), FDI_TX_ENABLE, 0);
intel_de_posting_read(dev_priv, FDI_TX_CTL(pipe));
reg = FDI_RX_CTL(pipe);
temp = intel_de_read(dev_priv, reg);
@ -1027,11 +970,8 @@ void ilk_fdi_disable(struct intel_crtc *crtc)
FDI_RX_PHASE_SYNC_POINTER_OVR);
/* still set train pattern 1 */
reg = FDI_TX_CTL(pipe);
temp = intel_de_read(dev_priv, reg);
temp &= ~FDI_LINK_TRAIN_NONE;
temp |= FDI_LINK_TRAIN_PATTERN_1;
intel_de_write(dev_priv, reg, temp);
intel_de_rmw(dev_priv, FDI_TX_CTL(pipe),
FDI_LINK_TRAIN_NONE, FDI_LINK_TRAIN_PATTERN_1);
reg = FDI_RX_CTL(pipe);
temp = intel_de_read(dev_priv, reg);