diff options
Diffstat (limited to 'drivers/gpu/drm/sun4i/sun4i_tcon.c')
| -rw-r--r-- | drivers/gpu/drm/sun4i/sun4i_tcon.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/drivers/gpu/drm/sun4i/sun4i_tcon.c b/drivers/gpu/drm/sun4i/sun4i_tcon.c index 2809d0ccb1a7..1a114e380f13 100644 --- a/drivers/gpu/drm/sun4i/sun4i_tcon.c +++ b/drivers/gpu/drm/sun4i/sun4i_tcon.c @@ -875,6 +875,7 @@ static int sun4i_tcon_bind(struct device *dev, struct device *master, struct sunxi_engine *engine; struct device_node *remote; struct sun4i_tcon *tcon; + struct reset_control *edp_rstc; bool has_lvds_rst, has_lvds_alt, can_lvds; int ret; @@ -899,6 +900,20 @@ static int sun4i_tcon_bind(struct device *dev, struct device *master, return PTR_ERR(tcon->lcd_rst); } + if (tcon->quirks->needs_edp_reset) { + edp_rstc = devm_reset_control_get_shared(dev, "edp"); + if (IS_ERR(edp_rstc)) { + dev_err(dev, "Couldn't get edp reset line\n"); + return PTR_ERR(edp_rstc); + } + + ret = reset_control_deassert(edp_rstc); + if (ret) { + dev_err(dev, "Couldn't deassert edp reset line\n"); + return ret; + } + } + /* Make sure our TCON is reset */ ret = reset_control_reset(tcon->lcd_rst); if (ret) { @@ -1191,6 +1206,16 @@ static const struct sun4i_tcon_quirks sun8i_v3s_quirks = { .has_channel_0 = true, }; +static const struct sun4i_tcon_quirks sun9i_a80_tcon_lcd_quirks = { + .has_channel_0 = true, + .needs_edp_reset = true, +}; + +static const struct sun4i_tcon_quirks sun9i_a80_tcon_tv_quirks = { + .has_channel_1 = true, + .needs_edp_reset = true, +}; + /* sun4i_drv uses this list to check if a device node is a TCON */ const struct of_device_id sun4i_tcon_of_table[] = { { .compatible = "allwinner,sun4i-a10-tcon", .data = &sun4i_a10_quirks }, @@ -1202,6 +1227,8 @@ const struct of_device_id sun4i_tcon_of_table[] = { { .compatible = "allwinner,sun8i-a83t-tcon-lcd", .data = &sun8i_a83t_lcd_quirks }, { .compatible = "allwinner,sun8i-a83t-tcon-tv", .data = &sun8i_a83t_tv_quirks }, { .compatible = "allwinner,sun8i-v3s-tcon", .data = &sun8i_v3s_quirks }, + { .compatible = "allwinner,sun9i-a80-tcon-lcd", .data = &sun9i_a80_tcon_lcd_quirks }, + { .compatible = "allwinner,sun9i-a80-tcon-tv", .data = &sun9i_a80_tcon_tv_quirks }, { } }; MODULE_DEVICE_TABLE(of, sun4i_tcon_of_table); |