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drm/i915: Fix TV get_modes to return modes count

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The get_modes hook must return the number of modes added.  This also fixes
TV mode's clock calculation int overflow issue, and use 0.01 precision for
mode refresh validation.

Signed-off-by: Zhenyu Wang <zhenyu.z.wang@intel.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
This commit is contained in:
Zhenyu Wang 2009-03-04 19:36:01 +08:00 committed by Eric Anholt
parent 771cb08135
commit 02c5dd985d
1 changed files with 12 additions and 8 deletions
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20
drivers/gpu/drm/i915/intel_tv.c
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@ -1082,7 +1082,7 @@ intel_tv_mode_valid(struct drm_connector *connector, struct drm_display_mode *mo
const struct tv_mode *tv_mode = intel_tv_mode_find(intel_output);
/* Ensure TV refresh is close to desired refresh */
if (tv_mode && abs(tv_mode->refresh - drm_mode_vrefresh(mode)) < 1)
if (tv_mode && abs(tv_mode->refresh - drm_mode_vrefresh(mode)) < 10)
return MODE_OK;
return MODE_CLOCK_RANGE;
}
@ -1495,7 +1495,8 @@ intel_tv_get_modes(struct drm_connector *connector)
struct drm_display_mode *mode_ptr;
struct intel_output *intel_output = to_intel_output(connector);
const struct tv_mode *tv_mode = intel_tv_mode_find(intel_output);
int j;
int j, count = 0;
u64 tmp;
for (j = 0; j < sizeof(input_res_table) / sizeof(input_res_table[0]);
j++) {
@ -1510,8 +1511,9 @@ intel_tv_get_modes(struct drm_connector *connector)
&& !tv_mode->component_only))
continue;
mode_ptr = drm_calloc(1, sizeof(struct drm_display_mode),
DRM_MEM_DRIVER);
mode_ptr = drm_mode_create(connector->dev);
if (!mode_ptr)
continue;
strncpy(mode_ptr->name, input->name, DRM_DISPLAY_MODE_LEN);
mode_ptr->hdisplay = hactive_s;
@ -1528,15 +1530,17 @@ intel_tv_get_modes(struct drm_connector *connector)
mode_ptr->vsync_end = mode_ptr->vsync_start + 1;
mode_ptr->vtotal = vactive_s + 33;
mode_ptr->clock = (int) (tv_mode->refresh *
mode_ptr->vtotal *
mode_ptr->htotal / 1000) / 1000;
tmp = (u64) tv_mode->refresh * mode_ptr->vtotal;
tmp *= mode_ptr->htotal;
tmp = div_u64(tmp, 1000000);
mode_ptr->clock = (int) tmp;
mode_ptr->type = DRM_MODE_TYPE_DRIVER;
drm_mode_probed_add(connector, mode_ptr);
count++;
}
return 0;
return count;
}
static void