From: Paulo Zanoni Date: Tue, 23 Oct 2012 20:29:56 +0000 (-0200) Subject: drm/i915: convert PIPE_CLK_SEL to transcoder X-Git-Tag: MMI-PSA29.97-13-9~15304^2~193^2~125 X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=bb523fc08d4a4a726c7555be7800735685888b3c;p=GitHub%2FMotorolaMobilityLLC%2Fkernel-slsi.git drm/i915: convert PIPE_CLK_SEL to transcoder This register appeared in Haswell. It does not have an EDP version because the EDP transcoder is always tied to the DDIA clock. Notice that if we call PIPE_CLK_SEL(pipe) when pipe is PIPE_A and transcoder is TRANSCODER_EDP we might introduce a bug, that's why this is a transcoder register even though it does not have an EDP version. Even though Haswell names this register PIPE_CLK_SEL, it will be renamed to TRANS_CLK_SEL in the future, so let's just start using the real name that makes more sense and avoids misusage. Signed-off-by: Paulo Zanoni Reviewed-by: Damien Lespiau Signed-off-by: Daniel Vetter --- diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index 598f83a298cf..99cda88819c7 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -4543,13 +4543,13 @@ #define PORT_CLK_SEL_WRPLL2 (5<<29) #define PORT_CLK_SEL_NONE (7<<29) -/* Pipe clock selection */ -#define PIPE_CLK_SEL_A 0x46140 -#define PIPE_CLK_SEL_B 0x46144 -#define PIPE_CLK_SEL(pipe) _PIPE(pipe, PIPE_CLK_SEL_A, PIPE_CLK_SEL_B) -/* For each pipe, we need to select the corresponding port clock */ -#define PIPE_CLK_SEL_DISABLED (0x0<<29) -#define PIPE_CLK_SEL_PORT(x) ((x+1)<<29) +/* Transcoder clock selection */ +#define TRANS_CLK_SEL_A 0x46140 +#define TRANS_CLK_SEL_B 0x46144 +#define TRANS_CLK_SEL(tran) _TRANSCODER(tran, TRANS_CLK_SEL_A, TRANS_CLK_SEL_B) +/* For each transcoder, we need to select the corresponding port clock */ +#define TRANS_CLK_SEL_DISABLED (0x0<<29) +#define TRANS_CLK_SEL_PORT(x) ((x+1)<<29) #define _PIPEA_MSA_MISC 0x60410 #define _PIPEB_MSA_MISC 0x61410 diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c index 81cca482c9dc..f568862aca57 100644 --- a/drivers/gpu/drm/i915/intel_ddi.c +++ b/drivers/gpu/drm/i915/intel_ddi.c @@ -1095,15 +1095,21 @@ void intel_ddi_enable_pipe_clock(struct intel_crtc *intel_crtc) struct drm_i915_private *dev_priv = crtc->dev->dev_private; struct intel_encoder *intel_encoder = intel_ddi_get_crtc_encoder(crtc); enum port port = intel_ddi_get_encoder_port(intel_encoder); + enum transcoder cpu_transcoder = intel_crtc->cpu_transcoder; - I915_WRITE(PIPE_CLK_SEL(intel_crtc->pipe), PIPE_CLK_SEL_PORT(port)); + if (cpu_transcoder != TRANSCODER_EDP) + I915_WRITE(TRANS_CLK_SEL(cpu_transcoder), + TRANS_CLK_SEL_PORT(port)); } void intel_ddi_disable_pipe_clock(struct intel_crtc *intel_crtc) { struct drm_i915_private *dev_priv = intel_crtc->base.dev->dev_private; + enum transcoder cpu_transcoder = intel_crtc->cpu_transcoder; - I915_WRITE(PIPE_CLK_SEL(intel_crtc->pipe), PIPE_CLK_SEL_DISABLED); + if (cpu_transcoder != TRANSCODER_EDP) + I915_WRITE(TRANS_CLK_SEL(cpu_transcoder), + TRANS_CLK_SEL_DISABLED); } void intel_ddi_pre_enable(struct intel_encoder *intel_encoder)