[PATCH v3 21/23] drm/qxl: add qxl_add_mode helper function

Gerd Hoffmann
2019-01-18T12:21:43Z

Add a helper function to add custom video modes to a connector.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
---
drivers/gpu/drm/qxl/qxl_display.c | 84 +++++++++++++++++++++++----------------
1 file changed, 49 insertions(+), 35 deletions(-)

diff --git a/drivers/gpu/drm/qxl/qxl_display.c b/drivers/gpu/drm/qxl/qxl_display.c
index fed2ea018d..926fcb49b2 100644
--- a/drivers/gpu/drm/qxl/qxl_display.c
+++ b/drivers/gpu/drm/qxl/qxl_display.c
@@ -212,15 +212,36 @@ static int qxl_check_framebuffer(struct qxl_device *qdev,
return qxl_check_mode(qdev, bo->surf.width, bo->surf.height);
}

-static int qxl_add_monitors_config_modes(struct drm_connector *connector,
- unsigned *pwidth,
- unsigned *pheight)
+static int qxl_add_mode(struct drm_connector *connector,
+ unsigned int width,
+ unsigned int height,
+ bool preferred)
+{
+ struct drm_device *dev = connector->dev;
+ struct qxl_device *qdev = dev->dev_private;
+ struct drm_display_mode *mode = NULL;
+ int rc;
+
+ rc = qxl_check_mode(qdev, width, height);
+ if (rc != 0)
+ return 0;
+
+ mode = drm_cvt_mode(dev, width, height, 60, false, false, false);
+ if (preferred)
+ mode->type |= DRM_MODE_TYPE_PREFERRED;
+ mode->hdisplay = width;
+ mode->vdisplay = height;
+ drm_mode_set_name(mode);
+ drm_mode_probed_add(connector, mode);
+ return 1;
+}
+
+static int qxl_add_monitors_config_modes(struct drm_connector *connector)
{
struct drm_device *dev = connector->dev;
struct qxl_device *qdev = dev->dev_private;
struct qxl_output *output = drm_connector_to_qxl_output(connector);
int h = output->index;
- struct drm_display_mode *mode = NULL;
struct qxl_head *head;

if (!qdev->monitors_config)
@@ -235,19 +256,7 @@ static int qxl_add_monitors_config_modes(struct drm_connector *connector,
head = &qdev->client_monitors_config->heads[h];
DRM_DEBUG_KMS("head %d is %dx%d\n", h, head->width, head->height);

- mode = drm_cvt_mode(dev, head->width, head->height, 60, false, false,
- false);
- mode->type |= DRM_MODE_TYPE_PREFERRED;
- mode->hdisplay = head->width;
- mode->vdisplay = head->height;
- drm_mode_set_name(mode);
- *pwidth = head->width;
- *pheight = head->height;
- drm_mode_probed_add(connector, mode);
- /* remember the last custom size for mode validation */
- qdev->monitors_config_width = mode->hdisplay;
- qdev->monitors_config_height = mode->vdisplay;
- return 1;
+ return qxl_add_mode(connector, head->width, head->height, true);
}

static struct mode_size {
@@ -273,22 +282,16 @@ static struct mode_size {
{1920, 1200}
};

-static int qxl_add_common_modes(struct drm_connector *connector,
- unsigned int pwidth,
- unsigned int pheight)
+static int qxl_add_common_modes(struct drm_connector *connector)
{
- struct drm_device *dev = connector->dev;
- struct drm_display_mode *mode = NULL;
- int i;
+ int i, ret = 0;

- for (i = 0; i < ARRAY_SIZE(common_modes); i++) {
- mode = drm_cvt_mode(dev, common_modes[i].w, common_modes[i].h,
- 60, false, false, false);
- if (common_modes[i].w == pwidth && common_modes[i].h == pheight)
- mode->type |= DRM_MODE_TYPE_PREFERRED;
- drm_mode_probed_add(connector, mode);
- }
- return i - 1;
+ for (i = 0; i < ARRAY_SIZE(common_modes); i++)
+ ret += qxl_add_mode(connector,
+ common_modes[i].w,
+ common_modes[i].h,
+ false);
+ return ret;
}

static void qxl_send_monitors_config(struct qxl_device *qdev)
@@ -991,14 +994,25 @@ static int qdev_crtc_init(struct drm_device *dev, int crtc_id)

static int qxl_conn_get_modes(struct drm_connector *connector)
{
+ struct drm_device *dev = connector->dev;
+ struct qxl_device *qdev = dev->dev_private;
+ struct qxl_output *output = drm_connector_to_qxl_output(connector);
unsigned int pwidth = 1024;
unsigned int pheight = 768;
int ret = 0;

- ret = qxl_add_monitors_config_modes(connector, &pwidth, &pheight);
- if (ret < 0)
- return ret;
- ret += qxl_add_common_modes(connector, pwidth, pheight);
+ if (qdev->client_monitors_config) {
+ struct qxl_head *head;
+ head = &qdev->client_monitors_config->heads[output->index];
+ if (head->width)
+ pwidth = head->width;
+ if (head->height)
+ pheight = head->height;
+ }
+
+ ret += qxl_add_common_modes(connector);
+ ret += qxl_add_monitors_config_modes(connector);
+ drm_set_preferred_mode(connector, pwidth, pheight);
return ret;
}

--
2.9.3