diff options
Diffstat (limited to 'drivers/gpu/drm/tidss/tidss_oldi.c')
| -rw-r--r-- | drivers/gpu/drm/tidss/tidss_oldi.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/drivers/gpu/drm/tidss/tidss_oldi.c b/drivers/gpu/drm/tidss/tidss_oldi.c index 7688251beba2..17c535bfa057 100644 --- a/drivers/gpu/drm/tidss/tidss_oldi.c +++ b/drivers/gpu/drm/tidss/tidss_oldi.c @@ -309,6 +309,25 @@ static u32 *tidss_oldi_atomic_get_input_bus_fmts(struct drm_bridge *bridge, return input_fmts; } +static enum drm_mode_status +tidss_oldi_mode_valid(struct drm_bridge *bridge, + const struct drm_display_info *info, + const struct drm_display_mode *mode) +{ + struct tidss_oldi *oldi = drm_bridge_to_tidss_oldi(bridge); + unsigned long round_clock; + + round_clock = clk_round_rate(oldi->serial, mode->clock * 7 * 1000); + /* + * To keep the check consistent with dispc_vp_set_clk_rate(), + * we use the same 5% check here. + */ + if (dispc_pclk_diff(mode->clock * 7 * 1000, round_clock) > 5) + return -EINVAL; + + return 0; +} + static const struct drm_bridge_funcs tidss_oldi_bridge_funcs = { .attach = tidss_oldi_bridge_attach, .atomic_pre_enable = tidss_oldi_atomic_pre_enable, @@ -317,6 +336,7 @@ static const struct drm_bridge_funcs tidss_oldi_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, + .mode_valid = tidss_oldi_mode_valid, }; static int get_oldi_mode(struct device_node *oldi_tx, int *companion_instance) @@ -430,6 +450,7 @@ void tidss_oldi_deinit(struct tidss_device *tidss) for (int i = 0; i < tidss->num_oldis; i++) { if (tidss->oldis[i]) { drm_bridge_remove(&tidss->oldis[i]->bridge); + tidss->is_ext_vp_clk[tidss->oldis[i]->parent_vp] = false; tidss->oldis[i] = NULL; } } @@ -580,6 +601,7 @@ int tidss_oldi_init(struct tidss_device *tidss) oldi->bridge.timings = &default_tidss_oldi_timings; tidss->oldis[tidss->num_oldis++] = oldi; + tidss->is_ext_vp_clk[oldi->parent_vp] = true; oldi->tidss = tidss; drm_bridge_add(&oldi->bridge); |