[PATCH] drm: Perform cmdline mode parsing during connector initialisation
Daniel Vetter
daniel.vetter at ffwll.ch
Wed Aug 6 01:08:32 PDT 2014
From: Chris Wilson <chris at chris-wilson.co.uk>
i915.ko has a custom fbdev initialisation routine that aims to preserve
the current mode set by the BIOS, unless overruled by the user. The
user's wishes are determined by what, if any, mode is specified on the
command line (via the video= parameter). However, that command line mode
is first parsed by drm_fb_helper_initial_config() which is called after
i915.ko's custom initial_config() as a fallback method. So in order for
us to honour it, we need to move the cmdline parser earlier. If we
perform the connector cmdline parsing as soon as we initialise the
connector, that cmdline mode and forced status is then available even if
the fbdev helper is not compiled in or never called.
We also then expose the cmdline user mode in the connector mode lists.
v2: Rebase after connector->name upheaval.
v3: Adapt mga200 to look for the cmdline mode in the new place. Nicely
simplifies things while at that.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=73154
Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk> (v2)
Cc: Jesse Barnes <jbarnes at virtuousgeek.org>
Cc: Ville Syrjälä <ville.syrjala at linux.intel.com>
Cc: Daniel Vetter <daniel.vetter at ffwll.ch>
Reviewed-by: Jesse Barnes <jbarnes at virtuousgeek.org> (v2)
Cc: dri-devel at lists.freedesktop.org
Cc: Julia Lemire <jlemire at matrox.com>
Cc: Dave Airlie <airlied at redhat.com>
Signed-off-by: Daniel Vetter <daniel.vetter at ffwll.ch>
---
drivers/gpu/drm/drm_crtc.c | 55 +++++++++++++++++++++++++++++
drivers/gpu/drm/drm_fb_helper.c | 64 ++--------------------------------
drivers/gpu/drm/drm_modes.c | 1 +
drivers/gpu/drm/drm_probe_helper.c | 17 +++++++++
drivers/gpu/drm/mgag200/mgag200_mode.c | 20 +++--------
include/drm/drm_crtc.h | 1 +
include/drm/drm_fb_helper.h | 1 -
7 files changed, 82 insertions(+), 77 deletions(-)
diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
index 3c4a62169f28..d3f1e0033475 100644
--- a/drivers/gpu/drm/drm_crtc.c
+++ b/drivers/gpu/drm/drm_crtc.c
@@ -852,6 +852,59 @@ static void drm_mode_remove(struct drm_connector *connector,
}
/**
+ * drm_connector_get_cmdline_mode - reads the user's cmdline mode
+ * @connector: connector to quwery
+ * @mode: returned mode
+ *
+ * The kernel supports per-connector configration of its consoles through
+ * use of the video= parameter. This function parses that option and
+ * extracts the user's specified mode (or enable/disable status) for a
+ * particular connector. This is typically only used during the early fbdev
+ * setup.
+ */
+static void drm_connector_get_cmdline_mode(struct drm_connector *connector)
+{
+ struct drm_cmdline_mode *mode = &connector->cmdline_mode;
+ char *option = NULL;
+
+ if (fb_get_options(connector->name, &option))
+ return;
+
+ if (!drm_mode_parse_command_line_for_connector(option,
+ connector,
+ mode))
+ return;
+
+ if (mode->force) {
+ const char *s;
+
+ switch (mode->force) {
+ case DRM_FORCE_OFF:
+ s = "OFF";
+ break;
+ case DRM_FORCE_ON_DIGITAL:
+ s = "ON - dig";
+ break;
+ default:
+ case DRM_FORCE_ON:
+ s = "ON";
+ break;
+ }
+
+ DRM_INFO("forcing %s connector %s\n", connector->name, s);
+ connector->force = mode->force;
+ }
+
+ DRM_DEBUG_KMS("cmdline mode for connector %s %dx%d@%dHz%s%s%s\n",
+ connector->name,
+ mode->xres, mode->yres,
+ mode->refresh_specified ? mode->refresh : 60,
+ mode->rb ? " reduced blanking" : "",
+ mode->margins ? " with margins" : "",
+ mode->interlace ? " interlaced" : "");
+}
+
+/**
* drm_connector_init - Init a preallocated connector
* @dev: DRM device
* @connector: the connector to init
@@ -903,6 +956,8 @@ int drm_connector_init(struct drm_device *dev,
connector->edid_blob_ptr = NULL;
connector->status = connector_status_unknown;
+ drm_connector_get_cmdline_mode(connector);
+
list_add_tail(&connector->head, &dev->mode_config.connector_list);
dev->mode_config.num_connector++;
diff --git a/drivers/gpu/drm/drm_fb_helper.c b/drivers/gpu/drm/drm_fb_helper.c
index d139eddb3d61..9a91ee69af2b 100644
--- a/drivers/gpu/drm/drm_fb_helper.c
+++ b/drivers/gpu/drm/drm_fb_helper.c
@@ -171,60 +171,6 @@ int drm_fb_helper_remove_one_connector(struct drm_fb_helper *fb_helper,
}
EXPORT_SYMBOL(drm_fb_helper_remove_one_connector);
-static int drm_fb_helper_parse_command_line(struct drm_fb_helper *fb_helper)
-{
- struct drm_fb_helper_connector *fb_helper_conn;
- int i;
-
- for (i = 0; i < fb_helper->connector_count; i++) {
- struct drm_cmdline_mode *mode;
- struct drm_connector *connector;
- char *option = NULL;
-
- fb_helper_conn = fb_helper->connector_info[i];
- connector = fb_helper_conn->connector;
- mode = &fb_helper_conn->cmdline_mode;
-
- /* do something on return - turn off connector maybe */
- if (fb_get_options(connector->name, &option))
- continue;
-
- if (drm_mode_parse_command_line_for_connector(option,
- connector,
- mode)) {
- if (mode->force) {
- const char *s;
- switch (mode->force) {
- case DRM_FORCE_OFF:
- s = "OFF";
- break;
- case DRM_FORCE_ON_DIGITAL:
- s = "ON - dig";
- break;
- default:
- case DRM_FORCE_ON:
- s = "ON";
- break;
- }
-
- DRM_INFO("forcing %s connector %s\n",
- connector->name, s);
- connector->force = mode->force;
- }
-
- DRM_DEBUG_KMS("cmdline mode for connector %s %dx%d@%dHz%s%s%s\n",
- connector->name,
- mode->xres, mode->yres,
- mode->refresh_specified ? mode->refresh : 60,
- mode->rb ? " reduced blanking" : "",
- mode->margins ? " with margins" : "",
- mode->interlace ? " interlaced" : "");
- }
-
- }
- return 0;
-}
-
static void drm_fb_helper_save_lut_atomic(struct drm_crtc *crtc, struct drm_fb_helper *helper)
{
uint16_t *r_base, *g_base, *b_base;
@@ -1020,7 +966,7 @@ static int drm_fb_helper_single_fb_probe(struct drm_fb_helper *fb_helper,
struct drm_fb_helper_connector *fb_helper_conn = fb_helper->connector_info[i];
struct drm_cmdline_mode *cmdline_mode;
- cmdline_mode = &fb_helper_conn->cmdline_mode;
+ cmdline_mode = &fb_helper_conn->connector->cmdline_mode;
if (cmdline_mode->bpp_specified) {
switch (cmdline_mode->bpp) {
@@ -1267,9 +1213,7 @@ EXPORT_SYMBOL(drm_has_preferred_mode);
static bool drm_has_cmdline_mode(struct drm_fb_helper_connector *fb_connector)
{
- struct drm_cmdline_mode *cmdline_mode;
- cmdline_mode = &fb_connector->cmdline_mode;
- return cmdline_mode->specified;
+ return fb_connector->connector->cmdline_mode.specified;
}
struct drm_display_mode *drm_pick_cmdline_mode(struct drm_fb_helper_connector *fb_helper_conn,
@@ -1279,7 +1223,7 @@ struct drm_display_mode *drm_pick_cmdline_mode(struct drm_fb_helper_connector *f
struct drm_display_mode *mode = NULL;
bool prefer_non_interlace;
- cmdline_mode = &fb_helper_conn->cmdline_mode;
+ cmdline_mode = &fb_helper_conn->connector->cmdline_mode;
if (cmdline_mode->specified == false)
return mode;
@@ -1664,8 +1608,6 @@ bool drm_fb_helper_initial_config(struct drm_fb_helper *fb_helper, int bpp_sel)
struct drm_device *dev = fb_helper->dev;
int count = 0;
- drm_fb_helper_parse_command_line(fb_helper);
-
mutex_lock(&dev->mode_config.mutex);
count = drm_fb_helper_probe_connector_modes(fb_helper,
dev->mode_config.max_width,
diff --git a/drivers/gpu/drm/drm_modes.c b/drivers/gpu/drm/drm_modes.c
index bedf1894e17e..d1b7d2006529 100644
--- a/drivers/gpu/drm/drm_modes.c
+++ b/drivers/gpu/drm/drm_modes.c
@@ -1259,6 +1259,7 @@ drm_mode_create_from_cmdline_mode(struct drm_device *dev,
if (!mode)
return NULL;
+ mode->type |= DRM_MODE_TYPE_USERDEF;
drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
return mode;
}
diff --git a/drivers/gpu/drm/drm_probe_helper.c b/drivers/gpu/drm/drm_probe_helper.c
index db7d250f7ac7..6857e9ad6339 100644
--- a/drivers/gpu/drm/drm_probe_helper.c
+++ b/drivers/gpu/drm/drm_probe_helper.c
@@ -82,6 +82,22 @@ static void drm_mode_validate_flag(struct drm_connector *connector,
return;
}
+static int drm_helper_probe_add_cmdline_mode(struct drm_connector *connector)
+{
+ struct drm_display_mode *mode;
+
+ if (!connector->cmdline_mode.specified)
+ return 0;
+
+ mode = drm_mode_create_from_cmdline_mode(connector->dev,
+ &connector->cmdline_mode);
+ if (mode == NULL)
+ return 0;
+
+ drm_mode_probed_add(connector, mode);
+ return 1;
+}
+
static int drm_helper_probe_single_connector_modes_merge_bits(struct drm_connector *connector,
uint32_t maxX, uint32_t maxY, bool merge_type_bits)
{
@@ -141,6 +157,7 @@ static int drm_helper_probe_single_connector_modes_merge_bits(struct drm_connect
if (count == 0 && connector->status == connector_status_connected)
count = drm_add_modes_noedid(connector, 1024, 768);
+ count += drm_helper_probe_add_cmdline_mode(connector);
if (count == 0)
goto prune;
diff --git a/drivers/gpu/drm/mgag200/mgag200_mode.c b/drivers/gpu/drm/mgag200/mgag200_mode.c
index 45f04dea0ac2..e5ae60d7f0c5 100644
--- a/drivers/gpu/drm/mgag200/mgag200_mode.c
+++ b/drivers/gpu/drm/mgag200/mgag200_mode.c
@@ -1483,11 +1483,7 @@ static int mga_vga_mode_valid(struct drm_connector *connector,
{
struct drm_device *dev = connector->dev;
struct mga_device *mdev = (struct mga_device*)dev->dev_private;
- struct mga_fbdev *mfbdev = mdev->mfbdev;
- struct drm_fb_helper *fb_helper = &mfbdev->helper;
- struct drm_fb_helper_connector *fb_helper_conn = NULL;
int bpp = 32;
- int i = 0;
if (IS_G200_SE(mdev)) {
if (mdev->unique_rev_id == 0x01) {
@@ -1537,21 +1533,15 @@ static int mga_vga_mode_valid(struct drm_connector *connector,
}
/* Validate the mode input by the user */
- for (i = 0; i < fb_helper->connector_count; i++) {
- if (fb_helper->connector_info[i]->connector == connector) {
- /* Found the helper for this connector */
- fb_helper_conn = fb_helper->connector_info[i];
- if (fb_helper_conn->cmdline_mode.specified) {
- if (fb_helper_conn->cmdline_mode.bpp_specified) {
- bpp = fb_helper_conn->cmdline_mode.bpp;
- }
- }
+ if (connector->cmdline_mode.specified) {
+ if (connector->cmdline_mode.bpp_specified) {
+ bpp = connector->cmdline_mode.bpp;
}
}
if ((mode->hdisplay * mode->vdisplay * (bpp/8)) > mdev->mc.vram_size) {
- if (fb_helper_conn)
- fb_helper_conn->cmdline_mode.specified = false;
+ if (connector->cmdline_mode.specified)
+ connector->cmdline_mode.specified = false;
return MODE_BAD;
}
diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h
index 62f73bdbcc47..265b20f6bd8b 100644
--- a/include/drm/drm_crtc.h
+++ b/include/drm/drm_crtc.h
@@ -548,6 +548,7 @@ struct drm_connector {
void *helper_private;
/* forced on connector */
+ struct drm_cmdline_mode cmdline_mode;
enum drm_connector_force force;
bool override_edid;
uint32_t encoder_ids[DRM_CONNECTOR_MAX_ENCODER];
diff --git a/include/drm/drm_fb_helper.h b/include/drm/drm_fb_helper.h
index bfd329d613c4..f4ad254e3488 100644
--- a/include/drm/drm_fb_helper.h
+++ b/include/drm/drm_fb_helper.h
@@ -77,7 +77,6 @@ struct drm_fb_helper_funcs {
struct drm_fb_helper_connector {
struct drm_connector *connector;
- struct drm_cmdline_mode cmdline_mode;
};
struct drm_fb_helper {
--
2.0.1
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