Make the pclk_rate u64 to accommodate higher pixel clock rates.
Changes in v4: - fixed commit message
Signed-off-by: Abhinav Kumar abhinavk@codeaurora.org --- drivers/gpu/drm/msm/dsi/dsi_host.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/msm/dsi/dsi_host.c b/drivers/gpu/drm/msm/dsi/dsi_host.c index b9f2ef9..596959c 100644 --- a/drivers/gpu/drm/msm/dsi/dsi_host.c +++ b/drivers/gpu/drm/msm/dsi/dsi_host.c @@ -669,7 +669,8 @@ static int dsi_calc_clk_rate(struct msm_dsi_host *msm_host, bool is_dual_dsi) const struct msm_dsi_cfg_handler *cfg_hnd = msm_host->cfg_hnd; u8 lanes = msm_host->lanes; u32 bpp = dsi_get_bpp(msm_host->format); - u32 pclk_rate; + u64 pclk_rate; + u64 pclk_bpp;
if (!mode) { pr_err("%s: mode not set\n", __func__); @@ -689,13 +690,15 @@ static int dsi_calc_clk_rate(struct msm_dsi_host *msm_host, bool is_dual_dsi) if (is_dual_dsi) pclk_rate /= 2;
+ pclk_bpp = pclk_rate * bpp; if (lanes > 0) { - msm_host->byte_clk_rate = (pclk_rate * bpp) / (8 * lanes); + do_div(pclk_bpp, (8 * lanes)); } else { pr_err("%s: forcing mdss_dsi lanes to 1\n", __func__); - msm_host->byte_clk_rate = (pclk_rate * bpp) / 8; + do_div(pclk_bpp, 8); } msm_host->pixel_clk_rate = pclk_rate; + msm_host->byte_clk_rate = pclk_bpp;
DBG("pclk=%d, bclk=%d", msm_host->pixel_clk_rate, msm_host->byte_clk_rate);