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drm/i915: set default value for config->pixel_multiplier

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This way we can simplify the code quite a bit.

Also add a WARN in the sdvo code to complain about a bogus value
and kill the readout code in intel_ddi.c that Jesse sneaked in.
HW state readout for the pixel multiplier will work a bit differently
in the end.

v2: Rebase on top of the fdi pixel mutliplier handling fix.

Reviewed-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Daniel Vetter 2013-06-01 17:17:04 +02:00
parent c2a2a1a722
commit ef1b460d1b
3 changed files with 11 additions and 20 deletions
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1
drivers/gpu/drm/i915/intel_ddi.c
View File

@ -1279,7 +1279,6 @@ static void intel_ddi_get_config(struct intel_encoder *encoder,
flags |= DRM_MODE_FLAG_NVSYNC;
pipe_config->adjusted_mode.flags |= flags;
pipe_config->pixel_multiplier = 1;
}
static void intel_ddi_destroy(struct drm_encoder *encoder)

29
drivers/gpu/drm/i915/intel_display.c
View File

@ -4003,8 +4003,7 @@ retry:
link_bw = intel_fdi_link_freq(dev) * MHz(100)/KHz(1)/10;
fdi_dotclock = adjusted_mode->clock;
if (pipe_config->pixel_multiplier > 1)
fdi_dotclock /= pipe_config->pixel_multiplier;
fdi_dotclock /= pipe_config->pixel_multiplier;
lane = ironlake_get_lanes_required(fdi_dotclock, link_bw,
pipe_config->pipe_bpp);
@ -4458,11 +4457,8 @@ static void vlv_update_pll(struct intel_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);
dpll_md = 0;
if (crtc->config.pixel_multiplier > 1) {
dpll_md = (crtc->config.pixel_multiplier - 1)
<< DPLL_MD_UDI_MULTIPLIER_SHIFT;
}
dpll_md = (crtc->config.pixel_multiplier - 1)
<< DPLL_MD_UDI_MULTIPLIER_SHIFT;
I915_WRITE(DPLL_MD(pipe), dpll_md);
POSTING_READ(DPLL_MD(pipe));
@ -4496,8 +4492,7 @@ static void i9xx_update_pll(struct intel_crtc *crtc,
else
dpll |= DPLLB_MODE_DAC_SERIAL;
if ((crtc->config.pixel_multiplier > 1) &&
(IS_I945G(dev) || IS_I945GM(dev) || IS_G33(dev))) {
if (IS_I945G(dev) || IS_I945GM(dev) || IS_G33(dev)) {
dpll |= (crtc->config.pixel_multiplier - 1)
<< SDVO_MULTIPLIER_SHIFT_HIRES;
}
@ -4560,11 +4555,8 @@ static void i9xx_update_pll(struct intel_crtc *crtc,
udelay(150);
if (INTEL_INFO(dev)->gen >= 4) {
u32 dpll_md = 0;
if (crtc->config.pixel_multiplier > 1) {
dpll_md = (crtc->config.pixel_multiplier - 1)
<< DPLL_MD_UDI_MULTIPLIER_SHIFT;
}
u32 dpll_md = (crtc->config.pixel_multiplier - 1)
<< DPLL_MD_UDI_MULTIPLIER_SHIFT;
I915_WRITE(DPLL_MD(pipe), dpll_md);
} else {
/* The pixel multiplier can only be updated once the
@ -5613,10 +5605,8 @@ static uint32_t ironlake_compute_dpll(struct intel_crtc *intel_crtc,
else
dpll |= DPLLB_MODE_DAC_SERIAL;
if (intel_crtc->config.pixel_multiplier > 1) {
dpll |= (intel_crtc->config.pixel_multiplier - 1)
<< PLL_REF_SDVO_HDMI_MULTIPLIER_SHIFT;
}
dpll |= (intel_crtc->config.pixel_multiplier - 1)
<< PLL_REF_SDVO_HDMI_MULTIPLIER_SHIFT;
if (is_sdvo)
dpll |= DPLL_DVO_HIGH_SPEED;
@ -7783,8 +7773,9 @@ intel_modeset_pipe_config(struct drm_crtc *crtc,
goto fail;
encoder_retry:
/* Ensure the port clock default is reset when retrying. */
/* Ensure the port clock defaults are reset when retrying. */
pipe_config->port_clock = 0;
pipe_config->pixel_multiplier = 1;
/* Pass our mode to the connectors and the CRTC to give them a chance to
* adjust it according to limitations or connector properties, and also

1
drivers/gpu/drm/i915/intel_sdvo.c
View File

@ -1219,6 +1219,7 @@ static void intel_sdvo_mode_set(struct intel_encoder *intel_encoder)
switch (intel_crtc->config.pixel_multiplier) {
default:
WARN(1, "unknown pixel mutlipler specified\n");
case 1: rate = SDVO_CLOCK_RATE_MULT_1X; break;
case 2: rate = SDVO_CLOCK_RATE_MULT_2X; break;
case 4: rate = SDVO_CLOCK_RATE_MULT_4X; break;