lkml.org 
[lkml]   [2020]   [Aug]   [12]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH] drm/bridge/tc358775: Fixes bus formats read
Date
- 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 <simhavcs@gmail.com>

---
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,
--
2.7.4
\
 
 \ /
  Last update: 2020-08-12 09:26    [W:0.084 / U:2.452 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site