On Thu, 27 Sep 2012 19:13:06 +0530
Vijay Purushothaman <vijay.a.purushothaman at intel.com> wrote:
> In valleyview voltageswing, pre-emphasis and lane control registers can
> be programmed only through the h/w side band fabric.
>
> Cleaned up DPLL calculations for Valleyview to support multi display
> configurations.
>
> v2: Based on Daniel's feedbacak, moved crt hotplug detect work around as separate
> patch. Also moved i9xx_update_pll_dividers to i8xx_update_pll and
> i9xx_update_pll.
>
> Signed-off-by: Vijay Purushothaman <vijay.a.purushothaman at intel.com>
> Signed-off-by: Gajanan Bhat <gajanan.bhat at intel.com>
> ---
> drivers/gpu/drm/i915/i915_reg.h | 8 +--
> drivers/gpu/drm/i915/intel_display.c | 90 ++++++++++++++++++++++++----------
> 2 files changed, 66 insertions(+), 32 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
> index 3f75ee6..0fe4aad 100644
> --- a/drivers/gpu/drm/i915/i915_reg.h
> +++ b/drivers/gpu/drm/i915/i915_reg.h
> @@ -385,12 +385,8 @@
>
> #define DPIO_FASTCLK_DISABLE 0x8100
>
> -#define _DPIO_DATA_LANE0 0x0220
> -#define _DPIO_DATA_LANE1 0x0420
> -#define _DPIO_DATA_LANE2 0x2620
> -#define _DPIO_DATA_LANE3 0x2820
> -#define DPIO_DATA_LANE_A(pipe) _PIPE(pipe, _DPIO_DATA_LANE0, _DPIO_DATA_LANE2)
> -#define DPIO_DATA_LANE_B(pipe) _PIPE(pipe, _DPIO_DATA_LANE1, _DPIO_DATA_LANE3)
> +#define DPIO_DATA_CHANNEL1 0x8220
> +#define DPIO_DATA_CHANNEL2 0x8420
>
> /*
> * Fence registers
> diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
> index 68828e7..ed749c4 100644
> --- a/drivers/gpu/drm/i915/intel_display.c
> +++ b/drivers/gpu/drm/i915/intel_display.c
> @@ -4017,7 +4017,7 @@ static void vlv_update_pll(struct drm_crtc *crtc,
> struct drm_display_mode *mode,
> struct drm_display_mode *adjusted_mode,
> intel_clock_t *clock, intel_clock_t *reduced_clock,
> - int refclk, int num_connectors)
> + int num_connectors)
> {
> struct drm_device *dev = crtc->dev;
> struct drm_i915_private *dev_priv = dev->dev_private;
> @@ -4025,9 +4025,19 @@ static void vlv_update_pll(struct drm_crtc *crtc,
> int pipe = intel_crtc->pipe;
> u32 dpll, mdiv, pdiv;
> u32 bestn, bestm1, bestm2, bestp1, bestp2;
> - bool is_hdmi;
> + bool is_sdvo;
> + u32 temp;
> +
> + is_sdvo = intel_pipe_has_type(crtc, INTEL_OUTPUT_SDVO) ||
> + intel_pipe_has_type(crtc, INTEL_OUTPUT_HDMI);
>
> - is_hdmi = intel_pipe_has_type(crtc, INTEL_OUTPUT_HDMI);
> + dpll = DPLL_VGA_MODE_DIS;
> + dpll |= DPLL_EXT_BUFFER_ENABLE_VLV;
> + dpll |= DPLL_REFA_CLK_ENABLE_VLV;
> + dpll |= DPLL_INTEGRATED_CLOCK_VLV;
> +
> + I915_WRITE(DPLL(pipe), dpll);
> + POSTING_READ(DPLL(pipe));
>
> bestn = clock->n;
> bestm1 = clock->m1;
> @@ -4035,12 +4045,10 @@ static void vlv_update_pll(struct drm_crtc *crtc,
> bestp1 = clock->p1;
> bestp2 = clock->p2;
>
> - /* Enable DPIO clock input */
> - dpll = DPLL_EXT_BUFFER_ENABLE_VLV | DPLL_REFA_CLK_ENABLE_VLV |
> - DPLL_VGA_MODE_DIS | DPLL_INTEGRATED_CLOCK_VLV;
> - I915_WRITE(DPLL(pipe), dpll);
> - POSTING_READ(DPLL(pipe));
> -
> + /*
> + * In Valleyview PLL and program lane counter registers are exposed
> + * through DPIO interface
> + */
> mdiv = ((bestm1 << DPIO_M1DIV_SHIFT) | (bestm2 & DPIO_M2DIV_MASK));
> mdiv |= ((bestp1 << DPIO_P1_SHIFT) | (bestp2 << DPIO_P2_SHIFT));
> mdiv |= ((bestn << DPIO_N_SHIFT));
> @@ -4051,12 +4059,13 @@ static void vlv_update_pll(struct drm_crtc *crtc,
>
> intel_dpio_write(dev_priv, DPIO_CORE_CLK(pipe), 0x01000000);
>
> - pdiv = DPIO_REFSEL_OVERRIDE | (5 << DPIO_PLL_MODESEL_SHIFT) |
> + pdiv = (1 << DPIO_REFSEL_OVERRIDE) | (5 << DPIO_PLL_MODESEL_SHIFT) |
> (3 << DPIO_BIAS_CURRENT_CTL_SHIFT) | (1<<20) |
> - (8 << DPIO_DRIVER_CTL_SHIFT) | (5 << DPIO_CLK_BIAS_CTL_SHIFT);
> + (7 << DPIO_PLL_REFCLK_SEL_SHIFT) | (8 << DPIO_DRIVER_CTL_SHIFT) |
> + (5 << DPIO_CLK_BIAS_CTL_SHIFT);
> intel_dpio_write(dev_priv, DPIO_REFSFR(pipe), pdiv);
>
> - intel_dpio_write(dev_priv, DPIO_LFP_COEFF(pipe), 0x009f0051);
> + intel_dpio_write(dev_priv, DPIO_LFP_COEFF(pipe), 0x005f003b);
>
> dpll |= DPLL_VCO_ENABLE;
> I915_WRITE(DPLL(pipe), dpll);
> @@ -4064,21 +4073,47 @@ static void vlv_update_pll(struct drm_crtc *crtc,
> if (wait_for(((I915_READ(DPLL(pipe)) & DPLL_LOCK_VLV) == DPLL_LOCK_VLV), 1))
> DRM_ERROR("DPLL %d failed to lock\n", pipe);
>
> - if (is_hdmi) {
> - u32 temp = intel_mode_get_pixel_multiplier(adjusted_mode);
> + intel_dpio_write(dev_priv, DPIO_FASTCLK_DISABLE, 0x620);
> +
> + if (intel_pipe_has_type(crtc, INTEL_OUTPUT_DISPLAYPORT))
> + intel_dp_set_m_n(crtc, mode, adjusted_mode);
> +
> + I915_WRITE(DPLL(pipe), dpll);
> +
> + /* Wait for the clocks to stabilize. */
> + POSTING_READ(DPLL(pipe));
> + udelay(150);
>
> + temp = 0;
> + if (is_sdvo) {
> + temp = intel_mode_get_pixel_multiplier(adjusted_mode);
> if (temp > 1)
> temp = (temp - 1) << DPLL_MD_UDI_MULTIPLIER_SHIFT;
> else
> temp = 0;
> -
> - I915_WRITE(DPLL_MD(pipe), temp);
> - POSTING_READ(DPLL_MD(pipe));
> }
> + I915_WRITE(DPLL_MD(pipe), temp);
> + POSTING_READ(DPLL_MD(pipe));
>
> - intel_dpio_write(dev_priv, DPIO_FASTCLK_DISABLE, 0x641); /* ??? */
> + /* Now program lane control registers */
> + if(intel_pipe_has_type(crtc, INTEL_OUTPUT_DISPLAYPORT)
> + || intel_pipe_has_type(crtc, INTEL_OUTPUT_HDMI))
> + {
> + temp = 0x1000C4;
> + if(pipe == 1)
> + temp |= (1 << 21);
> + intel_dpio_write(dev_priv, DPIO_DATA_CHANNEL1, temp);
> + }
> + if(intel_pipe_has_type(crtc,INTEL_OUTPUT_EDP))
> + {
> + temp = 0x1000C4;
> + if(pipe == 1)
> + temp |= (1 << 21);
> + intel_dpio_write(dev_priv, DPIO_DATA_CHANNEL2, temp);
> + }
> }
>
> +
> static void i9xx_update_pll(struct drm_crtc *crtc,
> struct drm_display_mode *mode,
> struct drm_display_mode *adjusted_mode,
> @@ -4092,9 +4127,10 @@ static void i9xx_update_pll(struct drm_crtc *crtc,
> u32 dpll;
> bool is_sdvo;
>
> + i9xx_update_pll_dividers(crtc, clock, reduced_clock);
> +
> is_sdvo = intel_pipe_has_type(crtc, INTEL_OUTPUT_SDVO) ||
> intel_pipe_has_type(crtc, INTEL_OUTPUT_HDMI);
> -
> dpll = DPLL_VGA_MODE_DIS;
>
> if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS))
> @@ -4192,7 +4228,7 @@ static void i9xx_update_pll(struct drm_crtc *crtc,
>
> static void i8xx_update_pll(struct drm_crtc *crtc,
> struct drm_display_mode *adjusted_mode,
> - intel_clock_t *clock,
> + intel_clock_t *clock, intel_clock_t *reduced_clock,
> int num_connectors)
> {
> struct drm_device *dev = crtc->dev;
> @@ -4201,6 +4237,8 @@ static void i8xx_update_pll(struct drm_crtc *crtc,
> int pipe = intel_crtc->pipe;
> u32 dpll;
>
> + i9xx_update_pll_dividers(crtc, clock, reduced_clock);
> +
> dpll = DPLL_VGA_MODE_DIS;
>
> if (intel_pipe_has_type(crtc, INTEL_OUTPUT_LVDS)) {
> @@ -4327,14 +4365,14 @@ static int i9xx_crtc_mode_set(struct drm_crtc *crtc,
> if (is_sdvo && is_tv)
> i9xx_adjust_sdvo_tv_clock(adjusted_mode, &clock);
>
> - i9xx_update_pll_dividers(crtc, &clock, has_reduced_clock ?
> - &reduced_clock : NULL);
> -
> if (IS_GEN2(dev))
> - i8xx_update_pll(crtc, adjusted_mode, &clock, num_connectors);
> + i8xx_update_pll(crtc, adjusted_mode, &clock,
> + has_reduced_clock ? &reduced_clock : NULL,
> + num_connectors);
> else if (IS_VALLEYVIEW(dev))
> - vlv_update_pll(crtc, mode,adjusted_mode, &clock, NULL,
> - refclk, num_connectors);
> + vlv_update_pll(crtc, mode, adjusted_mode, &clock,
> + has_reduced_clock ? &reduced_clock : NULL,
> + num_connectors);
> else
> i9xx_update_pll(crtc, mode, adjusted_mode, &clock,
> has_reduced_clock ? &reduced_clock : NULL,
Looks good.
Reviewed-by: Jesse Barnes <jbarnes at virtuousgeek.org>
--
Jesse Barnes, Intel Open Source Technology Center
