145 lines
4.7 KiB
Diff
145 lines
4.7 KiB
Diff
|
From 2a153d97f5ea9086f309a0abef57dfe0b7a46e96 Mon Sep 17 00:00:00 2001
|
||
|
|
From: Mateusz Kwiatkowski <kfyatek+publicgit@gmail.com>
|
||
|
|
Date: Thu, 15 Jul 2021 01:08:01 +0200
|
||
|
|
Subject: [PATCH] drm/vc4: Allow setting the TV norm via module
|
||
|
|
parameter
|
||
|
|
|
||
|
|
Similar to the ch7006 and nouveau drivers, introduce a "tv_mode" module
|
||
|
|
parameter that allow setting the TV norm by specifying vc4.tv_norm= on
|
||
|
|
the kernel command line.
|
||
|
|
|
||
|
|
If that is not specified, try inferring one of the most popular norms
|
||
|
|
(PAL or NTSC) from the video mode specified on the command line. On
|
||
|
|
Raspberry Pis, this causes the most common cases of the sdtv_mode
|
||
|
|
setting in config.txt to be respected.
|
||
|
|
|
||
|
|
Signed-off-by: Mateusz Kwiatkowski <kfyatek+publicgit@gmail.com>
|
||
|
|
---
|
||
|
|
drivers/gpu/drm/vc4/vc4_vec.c | 72 ++++++++++++++++++++++++++++-------
|
||
|
|
1 file changed, 58 insertions(+), 14 deletions(-)
|
||
|
|
|
||
|
|
--- a/drivers/gpu/drm/vc4/vc4_vec.c
|
||
|
|
+++ b/drivers/gpu/drm/vc4/vc4_vec.c
|
||
|
|
@@ -66,7 +66,7 @@
|
||
|
|
#define VEC_CONFIG0_YCDELAY BIT(4)
|
||
|
|
#define VEC_CONFIG0_RAMPEN BIT(2)
|
||
|
|
#define VEC_CONFIG0_YCDIS BIT(2)
|
||
|
|
-#define VEC_CONFIG0_STD_MASK GENMASK(1, 0)
|
||
|
|
+#define VEC_CONFIG0_STD_MASK (VEC_CONFIG0_SECAM_STD | GENMASK(1, 0))
|
||
|
|
#define VEC_CONFIG0_NTSC_STD 0
|
||
|
|
#define VEC_CONFIG0_PAL_BDGHI_STD 1
|
||
|
|
#define VEC_CONFIG0_PAL_M_STD 2
|
||
|
|
@@ -185,6 +185,8 @@
|
||
|
|
#define VEC_DAC_MISC_DAC_RST_N BIT(0)
|
||
|
|
|
||
|
|
|
||
|
|
+static char *vc4_vec_tv_norm;
|
||
|
|
+
|
||
|
|
struct vc4_vec_variant {
|
||
|
|
u32 dac_config;
|
||
|
|
};
|
||
|
|
@@ -344,6 +346,44 @@ static const struct vc4_vec_tv_mode vc4_
|
||
|
|
},
|
||
|
|
};
|
||
|
|
|
||
|
|
+static const char * const tv_mode_names[] = {
|
||
|
|
+ [VC4_VEC_TV_MODE_NTSC] = "NTSC",
|
||
|
|
+ [VC4_VEC_TV_MODE_NTSC_J] = "NTSC-J",
|
||
|
|
+ [VC4_VEC_TV_MODE_NTSC_443] = "NTSC-443",
|
||
|
|
+ [VC4_VEC_TV_MODE_PAL] = "PAL",
|
||
|
|
+ [VC4_VEC_TV_MODE_PAL_M] = "PAL-M",
|
||
|
|
+ [VC4_VEC_TV_MODE_PAL_N] = "PAL-N",
|
||
|
|
+ [VC4_VEC_TV_MODE_PAL60] = "PAL60",
|
||
|
|
+ [VC4_VEC_TV_MODE_SECAM] = "SECAM",
|
||
|
|
+};
|
||
|
|
+
|
||
|
|
+enum vc4_vec_tv_mode_id
|
||
|
|
+vc4_vec_get_default_mode(struct drm_connector *connector)
|
||
|
|
+{
|
||
|
|
+ int i;
|
||
|
|
+
|
||
|
|
+ if (vc4_vec_tv_norm) {
|
||
|
|
+ for (i = 0; i < ARRAY_SIZE(tv_mode_names); i++)
|
||
|
|
+ if (strcmp(vc4_vec_tv_norm, tv_mode_names[i]) == 0)
|
||
|
|
+ return (enum vc4_vec_tv_mode_id) i;
|
||
|
|
+ } else if (connector->cmdline_mode.specified &&
|
||
|
|
+ ((connector->cmdline_mode.refresh_specified &&
|
||
|
|
+ (connector->cmdline_mode.refresh == 25 ||
|
||
|
|
+ connector->cmdline_mode.refresh == 50)) ||
|
||
|
|
+ (!connector->cmdline_mode.refresh_specified &&
|
||
|
|
+ (connector->cmdline_mode.yres == 288 ||
|
||
|
|
+ connector->cmdline_mode.yres == 576)))) {
|
||
|
|
+ /*
|
||
|
|
+ * no explicitly specified TV norm; use PAL if a mode that
|
||
|
|
+ * looks like PAL has been specified on the command line
|
||
|
|
+ */
|
||
|
|
+ return VC4_VEC_TV_MODE_PAL;
|
||
|
|
+ }
|
||
|
|
+
|
||
|
|
+ /* in all other cases, default to NTSC */
|
||
|
|
+ return VC4_VEC_TV_MODE_NTSC;
|
||
|
|
+}
|
||
|
|
+
|
||
|
|
static enum drm_connector_status
|
||
|
|
vc4_vec_connector_detect(struct drm_connector *connector, bool force)
|
||
|
|
{
|
||
|
|
@@ -373,11 +413,19 @@ static int vc4_vec_connector_get_modes(s
|
||
|
|
return 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
+static void vc4_vec_connector_reset(struct drm_connector *connector)
|
||
|
|
+{
|
||
|
|
+ drm_atomic_helper_connector_reset(connector);
|
||
|
|
+ /* preserve TV standard */
|
||
|
|
+ if (connector->state)
|
||
|
|
+ connector->state->tv.mode = vc4_vec_get_default_mode(connector);
|
||
|
|
+}
|
||
|
|
+
|
||
|
|
static const struct drm_connector_funcs vc4_vec_connector_funcs = {
|
||
|
|
.detect = vc4_vec_connector_detect,
|
||
|
|
.fill_modes = drm_helper_probe_single_connector_modes,
|
||
|
|
.destroy = vc4_vec_connector_destroy,
|
||
|
|
- .reset = drm_atomic_helper_connector_reset,
|
||
|
|
+ .reset = vc4_vec_connector_reset,
|
||
|
|
.atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
|
||
|
|
.atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
|
||
|
|
};
|
||
|
|
@@ -409,7 +457,7 @@ static struct drm_connector *vc4_vec_con
|
||
|
|
|
||
|
|
drm_object_attach_property(&connector->base,
|
||
|
|
dev->mode_config.tv_mode_property,
|
||
|
|
- VC4_VEC_TV_MODE_NTSC);
|
||
|
|
+ vc4_vec_get_default_mode(connector));
|
||
|
|
|
||
|
|
drm_connector_attach_encoder(connector, vec->encoder);
|
||
|
|
|
||
|
|
@@ -561,17 +609,6 @@ static const struct of_device_id vc4_vec
|
||
|
|
{ /* sentinel */ },
|
||
|
|
};
|
||
|
|
|
||
|
|
-static const char * const tv_mode_names[] = {
|
||
|
|
- [VC4_VEC_TV_MODE_NTSC] = "NTSC",
|
||
|
|
- [VC4_VEC_TV_MODE_NTSC_J] = "NTSC-J",
|
||
|
|
- [VC4_VEC_TV_MODE_NTSC_443] = "NTSC-443",
|
||
|
|
- [VC4_VEC_TV_MODE_PAL] = "PAL",
|
||
|
|
- [VC4_VEC_TV_MODE_PAL_M] = "PAL-M",
|
||
|
|
- [VC4_VEC_TV_MODE_PAL_N] = "PAL-N",
|
||
|
|
- [VC4_VEC_TV_MODE_PAL60] = "PAL60",
|
||
|
|
- [VC4_VEC_TV_MODE_SECAM] = "SECAM",
|
||
|
|
-};
|
||
|
|
-
|
||
|
|
static int vc4_vec_bind(struct device *dev, struct device *master, void *data)
|
||
|
|
{
|
||
|
|
struct platform_device *pdev = to_platform_device(dev);
|
||
|
|
@@ -680,3 +717,10 @@ struct platform_driver vc4_vec_driver =
|
||
|
|
.of_match_table = vc4_vec_dt_match,
|
||
|
|
},
|
||
|
|
};
|
||
|
|
+
|
||
|
|
+module_param_named(tv_norm, vc4_vec_tv_norm, charp, 0600);
|
||
|
|
+MODULE_PARM_DESC(tv_norm, "Default TV norm.\n"
|
||
|
|
+ "\t\tSupported: NTSC, NTSC-J, NTSC-443, PAL, PAL-M, PAL-N,\n"
|
||
|
|
+ "\t\t\tPAL60, SECAM.\n"
|
||
|
|
+ "\t\tDefault: PAL if a 50 Hz mode has been set via video=,\n"
|
||
|
|
+ "\t\t\tNTSC otherwise");
|