From f9f682ae3530f9287379dd91d1b7deaef4abf391 Mon Sep 17 00:00:00 2001 From: Jani Nikula Date: Mon, 27 Oct 2014 16:26:45 +0200 Subject: [PATCH] drm/i915/audio: beat some sense into the variable types and names Most importantly, "i" need not be the universal variable used for everything. No functional changes. Signed-off-by: Jani Nikula Reviewed-by: Rodrigo Vivi Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/intel_audio.c | 115 ++++++++++++++--------------- 1 file changed, 57 insertions(+), 58 deletions(-) diff --git a/drivers/gpu/drm/i915/intel_audio.c b/drivers/gpu/drm/i915/intel_audio.c index e761f2c8d1ae..00e9bfcd1e8d 100644 --- a/drivers/gpu/drm/i915/intel_audio.c +++ b/drivers/gpu/drm/i915/intel_audio.c @@ -73,20 +73,21 @@ static bool intel_eld_uptodate(struct drm_connector *connector, { struct drm_i915_private *dev_priv = connector->dev->dev_private; uint8_t *eld = connector->eld; - uint32_t i; + uint32_t tmp; + int i; - i = I915_READ(reg_eldv); - i &= bits_eldv; + tmp = I915_READ(reg_eldv); + tmp &= bits_eldv; if (!eld[0]) - return !i; + return !tmp; - if (!i) + if (!tmp) return false; - i = I915_READ(reg_elda); - i &= ~bits_elda; - I915_WRITE(reg_elda, i); + tmp = I915_READ(reg_elda); + tmp &= ~bits_elda; + I915_WRITE(reg_elda, tmp); for (i = 0; i < eld[2]; i++) if (I915_READ(reg_edid) != *((uint32_t *)eld + i)) @@ -102,12 +103,11 @@ static void g4x_write_eld(struct drm_connector *connector, struct drm_i915_private *dev_priv = connector->dev->dev_private; uint8_t *eld = connector->eld; uint32_t eldv; - uint32_t len; - uint32_t i; - - i = I915_READ(G4X_AUD_VID_DID); + uint32_t tmp; + int len, i; - if (i == INTEL_AUDIO_DEVBLC || i == INTEL_AUDIO_DEVCL) + tmp = I915_READ(G4X_AUD_VID_DID); + if (tmp == INTEL_AUDIO_DEVBLC || tmp == INTEL_AUDIO_DEVCL) eldv = G4X_ELDV_DEVCL_DEVBLC; else eldv = G4X_ELDV_DEVCTG; @@ -118,22 +118,22 @@ static void g4x_write_eld(struct drm_connector *connector, G4X_HDMIW_HDMIEDID)) return; - i = I915_READ(G4X_AUD_CNTL_ST); - i &= ~(eldv | G4X_ELD_ADDR); - len = (i >> 9) & 0x1f; /* ELD buffer size */ - I915_WRITE(G4X_AUD_CNTL_ST, i); + tmp = I915_READ(G4X_AUD_CNTL_ST); + tmp &= ~(eldv | G4X_ELD_ADDR); + len = (tmp >> 9) & 0x1f; /* ELD buffer size */ + I915_WRITE(G4X_AUD_CNTL_ST, tmp); if (!eld[0]) return; - len = min_t(uint8_t, eld[2], len); + len = min_t(int, eld[2], len); DRM_DEBUG_DRIVER("ELD size %d\n", len); for (i = 0; i < len; i++) I915_WRITE(G4X_HDMIW_HDMIEDID, *((uint32_t *)eld + i)); - i = I915_READ(G4X_AUD_CNTL_ST); - i |= eldv; - I915_WRITE(G4X_AUD_CNTL_ST, i); + tmp = I915_READ(G4X_AUD_CNTL_ST); + tmp |= eldv; + I915_WRITE(G4X_AUD_CNTL_ST, tmp); } static void haswell_write_eld(struct drm_connector *connector, @@ -144,11 +144,10 @@ static void haswell_write_eld(struct drm_connector *connector, struct intel_crtc *intel_crtc = to_intel_crtc(crtc); uint8_t *eld = connector->eld; uint32_t eldv; - uint32_t i; - int len; - int pipe = to_intel_crtc(crtc)->pipe; - int tmp; - + uint32_t tmp; + int len, i; + enum pipe pipe = to_intel_crtc(crtc)->pipe; + enum port port; int hdmiw_hdmiedid = HSW_AUD_EDID_DATA(pipe); int aud_cntl_st = HSW_AUD_DIP_ELD_CTRL(pipe); int aud_config = HSW_AUD_CFG(pipe); @@ -196,28 +195,27 @@ static void haswell_write_eld(struct drm_connector *connector, hdmiw_hdmiedid)) return; - i = I915_READ(aud_cntrl_st2); - i &= ~eldv; - I915_WRITE(aud_cntrl_st2, i); + tmp = I915_READ(aud_cntrl_st2); + tmp &= ~eldv; + I915_WRITE(aud_cntrl_st2, tmp); if (!eld[0]) return; - i = I915_READ(aud_cntl_st); - i &= ~IBX_ELD_ADDRESS; - I915_WRITE(aud_cntl_st, i); - i = (i >> 29) & DIP_PORT_SEL_MASK; /* DIP_Port_Select, 0x1 = PortB */ - DRM_DEBUG_DRIVER("port num:%d\n", i); + tmp = I915_READ(aud_cntl_st); + tmp &= ~IBX_ELD_ADDRESS; + I915_WRITE(aud_cntl_st, tmp); + port = (tmp >> 29) & DIP_PORT_SEL_MASK; /* DIP_Port_Select, 0x1 = PortB */ + DRM_DEBUG_DRIVER("port num:%d\n", port); - len = min_t(uint8_t, eld[2], 21); /* 84 bytes of hw ELD buffer */ + len = min_t(int, eld[2], 21); /* 84 bytes of hw ELD buffer */ DRM_DEBUG_DRIVER("ELD size %d\n", len); for (i = 0; i < len; i++) I915_WRITE(hdmiw_hdmiedid, *((uint32_t *)eld + i)); - i = I915_READ(aud_cntrl_st2); - i |= eldv; - I915_WRITE(aud_cntrl_st2, i); - + tmp = I915_READ(aud_cntrl_st2); + tmp |= eldv; + I915_WRITE(aud_cntrl_st2, tmp); } static void ironlake_write_eld(struct drm_connector *connector, @@ -228,13 +226,14 @@ static void ironlake_write_eld(struct drm_connector *connector, struct intel_crtc *intel_crtc = to_intel_crtc(crtc); uint8_t *eld = connector->eld; uint32_t eldv; - uint32_t i; - int len; + uint32_t tmp; + int len, i; int hdmiw_hdmiedid; int aud_config; int aud_cntl_st; int aud_cntrl_st2; - int pipe = to_intel_crtc(crtc)->pipe; + enum pipe pipe = to_intel_crtc(crtc)->pipe; + enum port port; if (HAS_PCH_IBX(connector->dev)) { hdmiw_hdmiedid = IBX_HDMIW_HDMIEDID(pipe); @@ -261,22 +260,22 @@ static void ironlake_write_eld(struct drm_connector *connector, intel_encoder = intel_attached_encoder(connector); intel_dig_port = enc_to_dig_port(&intel_encoder->base); - i = intel_dig_port->port; + port = intel_dig_port->port; } else { - i = I915_READ(aud_cntl_st); - i = (i >> 29) & DIP_PORT_SEL_MASK; + tmp = I915_READ(aud_cntl_st); + port = (tmp >> 29) & DIP_PORT_SEL_MASK; /* DIP_Port_Select, 0x1 = PortB */ } - if (!i) { + if (!port) { DRM_DEBUG_DRIVER("Audio directed to unknown port\n"); /* operate blindly on all ports */ eldv = IBX_ELD_VALIDB; eldv |= IBX_ELD_VALIDB << 4; eldv |= IBX_ELD_VALIDB << 8; } else { - DRM_DEBUG_DRIVER("ELD on port %c\n", port_name(i)); - eldv = IBX_ELD_VALIDB << ((i - 1) * 4); + DRM_DEBUG_DRIVER("ELD on port %c\n", port_name(port)); + eldv = IBX_ELD_VALIDB << ((port - 1) * 4); } if (intel_pipe_has_type(intel_crtc, INTEL_OUTPUT_DISPLAYPORT)) { @@ -293,25 +292,25 @@ static void ironlake_write_eld(struct drm_connector *connector, hdmiw_hdmiedid)) return; - i = I915_READ(aud_cntrl_st2); - i &= ~eldv; - I915_WRITE(aud_cntrl_st2, i); + tmp = I915_READ(aud_cntrl_st2); + tmp &= ~eldv; + I915_WRITE(aud_cntrl_st2, tmp); if (!eld[0]) return; - i = I915_READ(aud_cntl_st); - i &= ~IBX_ELD_ADDRESS; - I915_WRITE(aud_cntl_st, i); + tmp = I915_READ(aud_cntl_st); + tmp &= ~IBX_ELD_ADDRESS; + I915_WRITE(aud_cntl_st, tmp); - len = min_t(uint8_t, eld[2], 21); /* 84 bytes of hw ELD buffer */ + len = min_t(int, eld[2], 21); /* 84 bytes of hw ELD buffer */ DRM_DEBUG_DRIVER("ELD size %d\n", len); for (i = 0; i < len; i++) I915_WRITE(hdmiw_hdmiedid, *((uint32_t *)eld + i)); - i = I915_READ(aud_cntrl_st2); - i |= eldv; - I915_WRITE(aud_cntrl_st2, i); + tmp = I915_READ(aud_cntrl_st2); + tmp |= eldv; + I915_WRITE(aud_cntrl_st2, tmp); } void intel_write_eld(struct drm_encoder *encoder, -- 2.30.2