On Mon, 08 Dec 2014, Rickard Strandqvist <rickard_strandqvist@xxxxxxxxxxxxxxxxxx> wrote:
> Remove the function dsi_rr_formula() that is not used anywhere.
Please don't.
BR,
Jani.
>
> This was partially found by using a static code analysis program called cppcheck.
>
> Signed-off-by: Rickard Strandqvist <rickard_strandqvist@xxxxxxxxxxxxxxxxxx>
> ---
> drivers/gpu/drm/i915/intel_dsi_pll.c | 83 +---------------------------------
> 1 file changed, 1 insertion(+), 82 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/intel_dsi_pll.c b/drivers/gpu/drm/i915/intel_dsi_pll.c
> index fa7a6ca..20086e8 100644
> --- a/drivers/gpu/drm/i915/intel_dsi_pll.c
> +++ b/drivers/gpu/drm/i915/intel_dsi_pll.c
> @@ -50,88 +50,7 @@ static const u32 lfsr_converts[] = {
> 71, 35 /* 91 - 92 */
> };
>
> -#ifdef DSI_CLK_FROM_RR
> -
> -static u32 dsi_rr_formula(const struct drm_display_mode *mode,
> - int pixel_format, int video_mode_format,
> - int lane_count, bool eotp)
> -{
> - u32 bpp;
> - u32 hactive, vactive, hfp, hsync, hbp, vfp, vsync, vbp;
> - u32 hsync_bytes, hbp_bytes, hactive_bytes, hfp_bytes;
> - u32 bytes_per_line, bytes_per_frame;
> - u32 num_frames;
> - u32 bytes_per_x_frames, bytes_per_x_frames_x_lanes;
> - 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;
> - }
> -
> - hactive = mode->hdisplay;
> - vactive = mode->vdisplay;
> - hfp = mode->hsync_start - mode->hdisplay;
> - hsync = mode->hsync_end - mode->hsync_start;
> - hbp = mode->htotal - mode->hsync_end;
> -
> - vfp = mode->vsync_start - mode->vdisplay;
> - vsync = mode->vsync_end - mode->vsync_start;
> - vbp = mode->vtotal - mode->vsync_end;
> -
> - hsync_bytes = DIV_ROUND_UP(hsync * bpp, 8);
> - hbp_bytes = DIV_ROUND_UP(hbp * bpp, 8);
> - hactive_bytes = DIV_ROUND_UP(hactive * bpp, 8);
> - hfp_bytes = DIV_ROUND_UP(hfp * bpp, 8);
> -
> - bytes_per_line = DSI_HSS_PACKET_SIZE + hsync_bytes +
> - DSI_HSA_PACKET_EXTRA_SIZE + DSI_HSE_PACKET_SIZE +
> - hbp_bytes + DSI_HBP_PACKET_EXTRA_SIZE +
> - hactive_bytes + DSI_HACTIVE_PACKET_EXTRA_SIZE +
> - hfp_bytes + DSI_HFP_PACKET_EXTRA_SIZE;
> -
> - /*
> - * XXX: Need to accurately calculate LP to HS transition timeout and add
> - * it to bytes_per_line/bytes_per_frame.
> - */
> -
> - if (eotp && video_mode_format == VIDEO_MODE_BURST)
> - bytes_per_line += DSI_EOTP_PACKET_SIZE;
> -
> - bytes_per_frame = vsync * bytes_per_line + vbp * bytes_per_line +
> - vactive * bytes_per_line + vfp * bytes_per_line;
> -
> - if (eotp &&
> - (video_mode_format == VIDEO_MODE_NON_BURST_WITH_SYNC_PULSE ||
> - video_mode_format == VIDEO_MODE_NON_BURST_WITH_SYNC_EVENTS))
> - bytes_per_frame += DSI_EOTP_PACKET_SIZE;
> -
> - num_frames = drm_mode_vrefresh(mode);
> - bytes_per_x_frames = num_frames * bytes_per_frame;
> -
> - bytes_per_x_frames_x_lanes = bytes_per_x_frames / lane_count;
> -
> - /* the dsi clock is divided by 2 in the hardware to get dsi ddr clock */
> - dsi_bit_clock_hz = bytes_per_x_frames_x_lanes * 8;
> - dsi_clk = dsi_bit_clock_hz / 1000;
> -
> - if (eotp && video_mode_format == VIDEO_MODE_BURST)
> - dsi_clk *= 2;
> -
> - return dsi_clk;
> -}
> -
> -#else
> +#ifndef DSI_CLK_FROM_RR
>
> /* Get DSI clock from pixel clock */
> static u32 dsi_clk_from_pclk(u32 pclk, int pixel_format, int lane_count)
> --
> 1.7.10.4
>
--
Jani Nikula, Intel Open Source Technology Center
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