From 260c1ad1993d3f17e25c5d848d6d2525ff38913c Mon Sep 17 00:00:00 2001 From: Jani Nikula Date: Wed, 1 Jul 2015 15:58:50 +0300 Subject: drm/i915/dsi: abstract dsi bpp derivation from pixel format MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Nuke three copies of the same switch case. Hopefully we can switch to a drm generic function later on, but that will require us to swich to enum mipi_dsi_pixel_format first. Reviewed-by: Ville Syrjälä Signed-off-by: Jani Nikula Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/intel_dsi_pll.c | 67 +++++++++++++----------------------- 1 file changed, 24 insertions(+), 43 deletions(-) (limited to 'drivers/gpu') diff --git a/drivers/gpu/drm/i915/intel_dsi_pll.c b/drivers/gpu/drm/i915/intel_dsi_pll.c index d20cf37b6901..49ae821e82d8 100644 --- a/drivers/gpu/drm/i915/intel_dsi_pll.c +++ b/drivers/gpu/drm/i915/intel_dsi_pll.c @@ -38,6 +38,27 @@ #define DSI_HFP_PACKET_EXTRA_SIZE 6 #define DSI_EOTP_PACKET_SIZE 4 +static int dsi_pixel_format_bpp(int pixel_format) +{ + int bpp; + + switch (pixel_format) { + default: + case VID_MODE_FORMAT_RGB888: + case VID_MODE_FORMAT_RGB666_LOOSE: + bpp = 24; + break; + case VID_MODE_FORMAT_RGB666: + bpp = 18; + break; + case VID_MODE_FORMAT_RGB565: + bpp = 16; + break; + } + + return bpp; +} + struct dsi_mnp { u32 dsi_pll_ctrl; u32 dsi_pll_div; @@ -65,19 +86,7 @@ static u32 dsi_rr_formula(const struct drm_display_mode *mode, u32 dsi_bit_clock_hz; u32 dsi_clk; - switch (pixel_format) { - default: - case VID_MODE_FORMAT_RGB888: - case VID_MODE_FORMAT_RGB666_LOOSE: - bpp = 24; - break; - case VID_MODE_FORMAT_RGB666: - bpp = 18; - break; - case VID_MODE_FORMAT_RGB565: - bpp = 16; - break; - } + bpp = dsi_pixel_format_bpp(pixel_format); hactive = mode->hdisplay; vactive = mode->vdisplay; @@ -137,21 +146,7 @@ static u32 dsi_rr_formula(const struct drm_display_mode *mode, static u32 dsi_clk_from_pclk(u32 pclk, int pixel_format, int lane_count) { u32 dsi_clk_khz; - u32 bpp; - - switch (pixel_format) { - default: - case VID_MODE_FORMAT_RGB888: - case VID_MODE_FORMAT_RGB666_LOOSE: - bpp = 24; - break; - case VID_MODE_FORMAT_RGB666: - bpp = 18; - break; - case VID_MODE_FORMAT_RGB565: - bpp = 16; - break; - } + u32 bpp = dsi_pixel_format_bpp(pixel_format); /* DSI data rate = pixel clock * bits per pixel / lane count pixel clock is converted from KHz to Hz */ @@ -286,21 +281,7 @@ void vlv_disable_dsi_pll(struct intel_encoder *encoder) static void assert_bpp_mismatch(int pixel_format, int pipe_bpp) { - int bpp; - - switch (pixel_format) { - default: - case VID_MODE_FORMAT_RGB888: - case VID_MODE_FORMAT_RGB666_LOOSE: - bpp = 24; - break; - case VID_MODE_FORMAT_RGB666: - bpp = 18; - break; - case VID_MODE_FORMAT_RGB565: - bpp = 16; - break; - } + int bpp = dsi_pixel_format_bpp(pixel_format); WARN(bpp != pipe_bpp, "bpp match assertion failure (expected %d, current %d)\n", -- cgit v1.2.1