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Wed, 12 Aug 2020 00:25:56 -0700 (PDT) From: Vinay Simha BN To: Subject: [PATCH] drm/bridge/tc358775: Fixes bus formats read Date: Wed, 12 Aug 2020 12:55:50 +0530 Message-Id: <1597217150-22911-1-git-send-email-simhavcs@gmail.com> X-Mailer: git-send-email 2.7.4 X-Mailman-Approved-At: Thu, 13 Aug 2020 07:12:31 +0000 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Jernej Skrabec , Jonas Karlman , David Airlie , Neil Armstrong , open list , "open list:DRM DRIVERS" , Andrzej Hajda , Laurent Pinchart , Vinay Simha BN MIME-Version: 1.0 Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" - bus formats read from drm_bridge_state.output_bus_cfg.format and .atomic_get_input_bus_fmts() instead of connector Signed-off-by: Vinay Simha BN --- v1: * Laurent Pinchart review comments incorporated drm_bridge_state.output_bus_cfg.format instead of connector --- drivers/gpu/drm/bridge/tc358775.c | 76 ++++++++++++++++++++++++++++++--------- 1 file changed, 59 insertions(+), 17 deletions(-) diff --git a/drivers/gpu/drm/bridge/tc358775.c b/drivers/gpu/drm/bridge/tc358775.c index 7da15cd..5d8714a 100644 --- a/drivers/gpu/drm/bridge/tc358775.c +++ b/drivers/gpu/drm/bridge/tc358775.c @@ -271,6 +271,13 @@ struct tc_data { struct gpio_desc *stby_gpio; u8 lvds_link; /* single-link or dual-link */ u8 bpc; + u32 output_bus_fmt; +}; + +static const u32 tc_lvds_out_bus_fmts[] = { + MEDIA_BUS_FMT_RGB888_1X7X4_JEIDA, + MEDIA_BUS_FMT_RGB888_1X7X4_SPWG, + MEDIA_BUS_FMT_RGB666_1X7X3_SPWG, }; static inline struct tc_data *bridge_to_tc(struct drm_bridge *b) @@ -359,19 +366,6 @@ static void d2l_write(struct i2c_client *i2c, u16 addr, u32 val) ret, addr); } -/* helper function to access bus_formats */ -static struct drm_connector *get_connector(struct drm_encoder *encoder) -{ - struct drm_device *dev = encoder->dev; - struct drm_connector *connector; - - list_for_each_entry(connector, &dev->mode_config.connector_list, head) - if (connector->encoder == encoder) - return connector; - - return NULL; -} - static void tc_bridge_enable(struct drm_bridge *bridge) { struct tc_data *tc = bridge_to_tc(bridge); @@ -380,7 +374,6 @@ static void tc_bridge_enable(struct drm_bridge *bridge) u32 val = 0; u16 dsiclk, clkdiv, byteclk, t1, t2, t3, vsdelay; struct drm_display_mode *mode; - struct drm_connector *connector = get_connector(bridge->encoder); mode = &bridge->encoder->crtc->state->adjusted_mode; @@ -451,14 +444,13 @@ static void tc_bridge_enable(struct drm_bridge *bridge) d2l_write(tc->i2c, LVPHY0, LV_PHY0_PRBS_ON(4) | LV_PHY0_ND(6)); dev_dbg(tc->dev, "bus_formats %04x bpc %d\n", - connector->display_info.bus_formats[0], + tc->output_bus_fmt, tc->bpc); /* * Default hardware register settings of tc358775 configured * with MEDIA_BUS_FMT_RGB888_1X7X4_JEIDA jeida-24 format */ - if (connector->display_info.bus_formats[0] == - MEDIA_BUS_FMT_RGB888_1X7X4_SPWG) { + if (tc->output_bus_fmt == MEDIA_BUS_FMT_RGB888_1X7X4_SPWG) { /* VESA-24 */ d2l_write(tc->i2c, LV_MX0003, LV_MX(LVI_R0, LVI_R1, LVI_R2, LVI_R3)); d2l_write(tc->i2c, LV_MX0407, LV_MX(LVI_R4, LVI_R7, LVI_R5, LVI_G0)); @@ -590,6 +582,51 @@ static int tc358775_parse_dt(struct device_node *np, struct tc_data *tc) return 0; } +static int tc_bridge_atomic_check(struct drm_bridge *bridge, + struct drm_bridge_state *bridge_state, + struct drm_crtc_state *crtc_state, + struct drm_connector_state *conn_state) +{ + struct tc_data *tc = bridge_to_tc(bridge); + + tc->output_bus_fmt = bridge_state->output_bus_cfg.format; + + dev_dbg(tc->dev, "output_bus_fmt %04x\n", tc->output_bus_fmt); + + return 0; +} + +static u32 * +tc_bridge_get_input_bus_fmts(struct drm_bridge *bridge, + struct drm_bridge_state *bridge_state, + struct drm_crtc_state *crtc_state, + struct drm_connector_state *conn_state, + u32 output_fmt, + unsigned int *num_input_fmts) +{ + u32 *input_fmts = NULL; + int i; + + *num_input_fmts = 0; + + for (i = 0 ; i < ARRAY_SIZE(tc_lvds_out_bus_fmts) ; ++i) { + if (output_fmt == tc_lvds_out_bus_fmts[i]) { + *num_input_fmts = 1; + input_fmts = kcalloc(*num_input_fmts, + sizeof(*input_fmts), + GFP_KERNEL); + if (!input_fmts) + return NULL; + + input_fmts[0] = output_fmt; + + break; + } + } + + return input_fmts; +} + static int tc_bridge_attach(struct drm_bridge *bridge, enum drm_bridge_attach_flags flags) { @@ -639,6 +676,11 @@ static int tc_bridge_attach(struct drm_bridge *bridge, } static const struct drm_bridge_funcs tc_bridge_funcs = { + .atomic_duplicate_state = drm_atomic_helper_bridge_duplicate_state, + .atomic_destroy_state = drm_atomic_helper_bridge_destroy_state, + .atomic_reset = drm_atomic_helper_bridge_reset, + .atomic_get_input_bus_fmts = tc_bridge_get_input_bus_fmts, + .atomic_check = tc_bridge_atomic_check, .attach = tc_bridge_attach, .pre_enable = tc_bridge_pre_enable, .enable = tc_bridge_enable,