drm/omap: fix DPI clkout index handling

DPI driver uses a fixed clkout index, 0. This has worked fine as the
first clkout is usually used.

To generalize the code and to support additional clock sources, change
the code to use dss_pll_get_clkout_idx_for_src() to get the clkout
index.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>

diff --git a/drivers/gpu/drm/omapdrm/dss/dpi.c b/drivers/gpu/drm/omapdrm/dss/dpi.c
index 5a5065691cad58d9f8e99de71dbba7e2d9675991..e24b9912c6d28017de4802ad61a6b3204a911f55 100644 (file)
--- a/drivers/gpu/drm/omapdrm/dss/dpi.c
+++ b/drivers/gpu/drm/omapdrm/dss/dpi.c
@@ -39,8 +39,6 @@
 #include "dss.h"
 #include "dss_features.h"
 
-#define HSDIV_DISPC    0
-
 struct dpi_data {
        struct platform_device *pdev;
 
@@ -128,6 +126,7 @@ static enum dss_clk_source dpi_get_clk_src(enum omap_channel channel)
 
 struct dpi_clk_calc_ctx {
        struct dss_pll *pll;
+       unsigned clkout_idx;
 
        /* inputs */
 
@@ -180,8 +179,8 @@ static bool dpi_calc_hsdiv_cb(int m_dispc, unsigned long dispc,
        if (m_dispc > 1 && m_dispc % 2 != 0 && ctx->pck_min >= 100000000)
                return false;
 
-       ctx->dsi_cinfo.mX[HSDIV_DISPC] = m_dispc;
-       ctx->dsi_cinfo.clkout[HSDIV_DISPC] = dispc;
+       ctx->dsi_cinfo.mX[ctx->clkout_idx] = m_dispc;
+       ctx->dsi_cinfo.clkout[ctx->clkout_idx] = dispc;
 
        return dispc_div_calc(dispc, ctx->pck_min, ctx->pck_max,
                        dpi_calc_dispc_cb, ctx);
@@ -222,6 +221,7 @@ static bool dpi_dsi_clk_calc(struct dpi_data *dpi, unsigned long pck,
 
        memset(ctx, 0, sizeof(*ctx));
        ctx->pll = dpi->pll;
+       ctx->clkout_idx = dss_pll_get_clkout_idx_for_src(dpi->clk_src);
        ctx->pck_min = pck - 1000;
        ctx->pck_max = pck + 1000;
 
@@ -286,7 +286,7 @@ static int dpi_set_dsi_clk(struct dpi_data *dpi, enum omap_channel channel,
 
        dpi->mgr_config.clock_info = ctx.dispc_cinfo;
 
-       *fck = ctx.dsi_cinfo.clkout[HSDIV_DISPC];
+       *fck = ctx.dsi_cinfo.clkout[ctx.clkout_idx];
        *lck_div = ctx.dispc_cinfo.lck_div;
        *pck_div = ctx.dispc_cinfo.pck_div;
 
@@ -514,7 +514,7 @@ static int dpi_check_timings(struct omap_dss_device *dssdev,
                if (!ok)
                        return -EINVAL;
 
-               fck = ctx.dsi_cinfo.clkout[HSDIV_DISPC];
+               fck = ctx.dsi_cinfo.clkout[ctx.clkout_idx];
        } else {
                ok = dpi_dss_clk_calc(timings->pixelclock, &ctx);
                if (!ok)