drm/omap: dsi: fix and cleanup ddr_clk_always_on

The driver ignores MIPI_DSI_CLOCK_NON_CONTINUOUS, and always uses
non-continuous clock.

Fix this by using MIPI_DSI_CLOCK_NON_CONTINUOUS and at the same time,
drop ddr_clk_always_on field which seems pretty useless.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201215104657.802264-82-tomi.valkeinen@ti.com

diff --git a/drivers/gpu/drm/omapdrm/dss/dsi.c b/drivers/gpu/drm/omapdrm/dss/dsi.c
index a17d734..749f591 100644 (file)
--- a/drivers/gpu/drm/omapdrm/dss/dsi.c
+++ b/drivers/gpu/drm/omapdrm/dss/dsi.c
@@ -1736,11 +1736,10 @@ static int dsi_cio_init(struct dsi_data *dsi)
 
        dsi_cio_timings(dsi);
 
-       if (dsi->mode == OMAP_DSS_DSI_VIDEO_MODE) {
-               /* DDR_CLK_ALWAYS_ON */
-               REG_FLD_MOD(dsi, DSI_CLK_CTRL,
-                       dsi->vm_timings.ddr_clk_always_on, 13, 13);
-       }
+       /* DDR_CLK_ALWAYS_ON */
+       REG_FLD_MOD(dsi, DSI_CLK_CTRL,
+                   !(dsi->dsidev->mode_flags & MIPI_DSI_CLOCK_NON_CONTINUOUS),
+                   13, 13);
 
        dsi->ulps_enabled = false;
 
@@ -3643,7 +3642,7 @@ static void dsi_setup_dsi_vcs(struct dsi_data *dsi)
        dsi_force_tx_stop_mode_io(dsi);
 
        /* start the DDR clock by sending a NULL packet */
-       if (dsi->vm_timings.ddr_clk_always_on)
+       if (!(dsi->dsidev->mode_flags & MIPI_DSI_CLOCK_NON_CONTINUOUS))
                dsi_vc_send_null(dsi, VC_CMD, dsi->dsidev->channel);
 }
 
@@ -4152,7 +4151,6 @@ static bool dsi_vm_calc_blanking(struct dsi_clk_calc_ctx *ctx)
        dsi_vm->hfp_blanking_mode = 1;
        dsi_vm->hbp_blanking_mode = 1;
 
-       dsi_vm->ddr_clk_always_on = cfg->ddr_clk_always_on;
        dsi_vm->window_sync = 4;
 
        /* setup DISPC videomode */

diff --git a/drivers/gpu/drm/omapdrm/dss/dsi.h b/drivers/gpu/drm/omapdrm/dss/dsi.h
index 478fc10..476069f 100644 (file)
--- a/drivers/gpu/drm/omapdrm/dss/dsi.h
+++ b/drivers/gpu/drm/omapdrm/dss/dsi.h
@@ -212,7 +212,6 @@ struct omap_dss_dsi_videomode_timings {
 
        enum omap_dss_dsi_trans_mode trans_mode;
 
-       bool ddr_clk_always_on;
        int window_sync;
 };
 
@@ -224,7 +223,6 @@ struct omap_dss_dsi_config {
        unsigned long hs_clk_min, hs_clk_max;
        unsigned long lp_clk_min, lp_clk_max;
 
-       bool ddr_clk_always_on;
        enum omap_dss_dsi_trans_mode trans_mode;
 };