diff options
Diffstat (limited to 'drivers/gpu/drm/sun4i/sun8i_mixer.c')
| -rw-r--r-- | drivers/gpu/drm/sun4i/sun8i_mixer.c | 81 |
1 files changed, 75 insertions, 6 deletions
diff --git a/drivers/gpu/drm/sun4i/sun8i_mixer.c b/drivers/gpu/drm/sun4i/sun8i_mixer.c index 126899d6f0d3..fc3713608f78 100644 --- a/drivers/gpu/drm/sun4i/sun8i_mixer.c +++ b/drivers/gpu/drm/sun4i/sun8i_mixer.c @@ -21,8 +21,9 @@ #include <linux/component.h> #include <linux/dma-mapping.h> -#include <linux/reset.h> #include <linux/of_device.h> +#include <linux/of_graph.h> +#include <linux/reset.h> #include "sun4i_drv.h" #include "sun8i_mixer.h" @@ -322,6 +323,42 @@ static struct regmap_config sun8i_mixer_regmap_config = { .max_register = 0xbfffc, /* guessed */ }; +static int sun8i_mixer_of_get_id(struct device_node *node) +{ + struct device_node *port, *ep; + int ret = -EINVAL; + + /* output is port 1 */ + port = of_graph_get_port_by_id(node, 1); + if (!port) + return -EINVAL; + + /* try to find downstream endpoint */ + for_each_available_child_of_node(port, ep) { + struct device_node *remote; + u32 reg; + + remote = of_graph_get_remote_endpoint(ep); + if (!remote) + continue; + + ret = of_property_read_u32(remote, "reg", ®); + if (!ret) { + of_node_put(remote); + of_node_put(ep); + of_node_put(port); + + return reg; + } + + of_node_put(remote); + } + + of_node_put(port); + + return ret; +} + static int sun8i_mixer_bind(struct device *dev, struct device *master, void *data) { @@ -353,8 +390,16 @@ static int sun8i_mixer_bind(struct device *dev, struct device *master, dev_set_drvdata(dev, mixer); mixer->engine.ops = &sun8i_engine_ops; mixer->engine.node = dev->of_node; - /* The ID of the mixer currently doesn't matter */ - mixer->engine.id = -1; + + /* + * While this function can fail, we shouldn't do anything + * if this happens. Some early DE2 DT entries don't provide + * mixer id but work nevertheless because matching between + * TCON and mixer is done by comparing node pointers (old + * way) instead comparing ids. If this function fails and + * id is needed, it will fail during id matching anyway. + */ + mixer->engine.id = sun8i_mixer_of_get_id(dev->of_node); mixer->cfg = of_device_get_match_data(dev); if (!mixer->cfg) @@ -432,14 +477,14 @@ static int sun8i_mixer_bind(struct device *dev, struct device *master, regmap_write(mixer->engine.regs, SUN8I_MIXER_BLEND_ATTR_FCOLOR(0), SUN8I_MIXER_BLEND_COLOR_BLACK); - /* Fixed zpos for now */ - regmap_write(mixer->engine.regs, SUN8I_MIXER_BLEND_ROUTE, 0x43210); - plane_cnt = mixer->cfg->vi_num + mixer->cfg->ui_num; for (i = 0; i < plane_cnt; i++) regmap_write(mixer->engine.regs, SUN8I_MIXER_BLEND_MODE(i), SUN8I_MIXER_BLEND_MODE_DEF); + regmap_update_bits(mixer->engine.regs, SUN8I_MIXER_BLEND_PIPE_CTL, + SUN8I_MIXER_BLEND_PIPE_CTL_EN_MSK, 0); + return 0; err_disable_bus_clk: @@ -500,6 +545,22 @@ static const struct sun8i_mixer_cfg sun8i_h3_mixer0_cfg = { .vi_num = 1, }; +static const struct sun8i_mixer_cfg sun8i_r40_mixer0_cfg = { + .ccsc = 0, + .mod_rate = 297000000, + .scaler_mask = 0xf, + .ui_num = 3, + .vi_num = 1, +}; + +static const struct sun8i_mixer_cfg sun8i_r40_mixer1_cfg = { + .ccsc = 1, + .mod_rate = 297000000, + .scaler_mask = 0x3, + .ui_num = 1, + .vi_num = 1, +}; + static const struct sun8i_mixer_cfg sun8i_v3s_mixer_cfg = { .vi_num = 2, .ui_num = 1, @@ -522,6 +583,14 @@ static const struct of_device_id sun8i_mixer_of_table[] = { .data = &sun8i_h3_mixer0_cfg, }, { + .compatible = "allwinner,sun8i-r40-de2-mixer-0", + .data = &sun8i_r40_mixer0_cfg, + }, + { + .compatible = "allwinner,sun8i-r40-de2-mixer-1", + .data = &sun8i_r40_mixer1_cfg, + }, + { .compatible = "allwinner,sun8i-v3s-de2-mixer", .data = &sun8i_v3s_mixer_cfg, }, |