From: Anitha Chrisanthus anitha.chrisanthus@intel.com
[ Upstream commit 74056092ff415e7e20ce2544689b32ee811c4f0b ]
On KMB, ADV bridge must be programmed and powered on prior to MIPI DSI HW initialization.
v2: changed to atomic_bridge_chain_enable (Sam)
Fixes: 98521f4d4b4c ("drm/kmb: Mipi DSI part of the display driver") Co-developed-by: Edmund Dea edmund.j.dea@intel.com Signed-off-by: Edmund Dea edmund.j.dea@intel.com Signed-off-by: Anitha Chrisanthus anitha.chrisanthus@intel.com Link: https://patchwork.freedesktop.org/patch/msgid/20211019230719.789958-1-anitha... Acked-by: Sam Ravnborg sam@ravnborg.org Signed-off-by: Maarten Lankhorst maarten.lankhorst@linux.intel.com Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/gpu/drm/kmb/kmb_crtc.c | 7 ++++--- drivers/gpu/drm/kmb/kmb_dsi.c | 9 +++++---- drivers/gpu/drm/kmb/kmb_dsi.h | 2 +- 3 files changed, 10 insertions(+), 8 deletions(-)
diff --git a/drivers/gpu/drm/kmb/kmb_crtc.c b/drivers/gpu/drm/kmb/kmb_crtc.c index 44327bc629ca..4f240466cf63 100644 --- a/drivers/gpu/drm/kmb/kmb_crtc.c +++ b/drivers/gpu/drm/kmb/kmb_crtc.c @@ -66,7 +66,8 @@ static const struct drm_crtc_funcs kmb_crtc_funcs = { .disable_vblank = kmb_crtc_disable_vblank, };
-static void kmb_crtc_set_mode(struct drm_crtc *crtc) +static void kmb_crtc_set_mode(struct drm_crtc *crtc, + struct drm_atomic_state *old_state) { struct drm_device *dev = crtc->dev; struct drm_display_mode *m = &crtc->state->adjusted_mode; @@ -75,7 +76,7 @@ static void kmb_crtc_set_mode(struct drm_crtc *crtc) unsigned int val = 0;
/* Initialize mipi */ - kmb_dsi_mode_set(kmb->kmb_dsi, m, kmb->sys_clk_mhz); + kmb_dsi_mode_set(kmb->kmb_dsi, m, kmb->sys_clk_mhz, old_state); drm_info(dev, "vfp= %d vbp= %d vsync_len=%d hfp=%d hbp=%d hsync_len=%d\n", m->crtc_vsync_start - m->crtc_vdisplay, @@ -138,7 +139,7 @@ static void kmb_crtc_atomic_enable(struct drm_crtc *crtc, struct kmb_drm_private *kmb = crtc_to_kmb_priv(crtc);
clk_prepare_enable(kmb->kmb_clk.clk_lcd); - kmb_crtc_set_mode(crtc); + kmb_crtc_set_mode(crtc, state); drm_crtc_vblank_on(crtc); }
diff --git a/drivers/gpu/drm/kmb/kmb_dsi.c b/drivers/gpu/drm/kmb/kmb_dsi.c index 5bc6c84073a3..756490589e0a 100644 --- a/drivers/gpu/drm/kmb/kmb_dsi.c +++ b/drivers/gpu/drm/kmb/kmb_dsi.c @@ -1331,7 +1331,8 @@ static u32 mipi_tx_init_dphy(struct kmb_dsi *kmb_dsi, return 0; }
-static void connect_lcd_to_mipi(struct kmb_dsi *kmb_dsi) +static void connect_lcd_to_mipi(struct kmb_dsi *kmb_dsi, + struct drm_atomic_state *old_state) { struct regmap *msscam;
@@ -1340,7 +1341,7 @@ static void connect_lcd_to_mipi(struct kmb_dsi *kmb_dsi) dev_dbg(kmb_dsi->dev, "failed to get msscam syscon"); return; } - + drm_atomic_bridge_chain_enable(adv_bridge, old_state); /* DISABLE MIPI->CIF CONNECTION */ regmap_write(msscam, MSS_MIPI_CIF_CFG, 0);
@@ -1351,7 +1352,7 @@ static void connect_lcd_to_mipi(struct kmb_dsi *kmb_dsi) }
int kmb_dsi_mode_set(struct kmb_dsi *kmb_dsi, struct drm_display_mode *mode, - int sys_clk_mhz) + int sys_clk_mhz, struct drm_atomic_state *old_state) { u64 data_rate;
@@ -1399,7 +1400,7 @@ int kmb_dsi_mode_set(struct kmb_dsi *kmb_dsi, struct drm_display_mode *mode, /* Dphy initialization */ mipi_tx_init_dphy(kmb_dsi, &mipi_tx_init_cfg);
- connect_lcd_to_mipi(kmb_dsi); + connect_lcd_to_mipi(kmb_dsi, old_state); dev_info(kmb_dsi->dev, "mipi hw initialized");
return 0; diff --git a/drivers/gpu/drm/kmb/kmb_dsi.h b/drivers/gpu/drm/kmb/kmb_dsi.h index 66b7c500d9bc..09dc88743d77 100644 --- a/drivers/gpu/drm/kmb/kmb_dsi.h +++ b/drivers/gpu/drm/kmb/kmb_dsi.h @@ -380,7 +380,7 @@ int kmb_dsi_host_bridge_init(struct device *dev); struct kmb_dsi *kmb_dsi_init(struct platform_device *pdev); void kmb_dsi_host_unregister(struct kmb_dsi *kmb_dsi); int kmb_dsi_mode_set(struct kmb_dsi *kmb_dsi, struct drm_display_mode *mode, - int sys_clk_mhz); + int sys_clk_mhz, struct drm_atomic_state *old_state); int kmb_dsi_map_mmio(struct kmb_dsi *kmb_dsi); int kmb_dsi_clk_init(struct kmb_dsi *kmb_dsi); int kmb_dsi_encoder_init(struct drm_device *dev, struct kmb_dsi *kmb_dsi);