diff options
Diffstat (limited to 'drivers/gpu/drm/bridge/lontium-lt9611.c')
| -rw-r--r-- | drivers/gpu/drm/bridge/lontium-lt9611.c | 340 |
1 files changed, 141 insertions, 199 deletions
diff --git a/drivers/gpu/drm/bridge/lontium-lt9611.c b/drivers/gpu/drm/bridge/lontium-lt9611.c index 3ce4e495aee5..a25d21a7d5c1 100644 --- a/drivers/gpu/drm/bridge/lontium-lt9611.c +++ b/drivers/gpu/drm/bridge/lontium-lt9611.c @@ -19,6 +19,7 @@ #include <drm/drm_atomic_helper.h> #include <drm/drm_bridge.h> #include <drm/drm_mipi_dsi.h> +#include <drm/drm_of.h> #include <drm/drm_print.h> #include <drm/drm_probe_helper.h> @@ -33,7 +34,7 @@ struct lt9611 { struct device *dev; struct drm_bridge bridge; - struct drm_connector connector; + struct drm_bridge *next_bridge; struct regmap *regmap; @@ -58,7 +59,6 @@ struct lt9611 { enum drm_connector_status status; u8 edid_buf[EDID_SEG_SIZE]; - u32 vic; }; #define LT9611_PAGE_CONTROL 0xff @@ -84,34 +84,11 @@ static const struct regmap_config lt9611_regmap_config = { .num_ranges = ARRAY_SIZE(lt9611_ranges), }; -struct lt9611_mode { - u16 hdisplay; - u16 vdisplay; - u8 vrefresh; - u8 lanes; - u8 intfs; -}; - -static struct lt9611_mode lt9611_modes[] = { - { 3840, 2160, 30, 4, 2 }, /* 3840x2160 24bit 30Hz 4Lane 2ports */ - { 1920, 1080, 60, 4, 1 }, /* 1080P 24bit 60Hz 4lane 1port */ - { 1920, 1080, 30, 3, 1 }, /* 1080P 24bit 30Hz 3lane 1port */ - { 1920, 1080, 24, 3, 1 }, - { 720, 480, 60, 4, 1 }, - { 720, 576, 50, 2, 1 }, - { 640, 480, 60, 2, 1 }, -}; - static struct lt9611 *bridge_to_lt9611(struct drm_bridge *bridge) { return container_of(bridge, struct lt9611, bridge); } -static struct lt9611 *connector_to_lt9611(struct drm_connector *connector) -{ - return container_of(connector, struct lt9611, connector); -} - static int lt9611_mipi_input_analog(struct lt9611 *lt9611) { const struct reg_sequence reg_cfg[] = { @@ -141,7 +118,7 @@ static int lt9611_mipi_input_digital(struct lt9611 *lt9611, { 0x8306, 0x0a }, }; - if (mode->hdisplay == 3840) + if (lt9611->dsi1_node) reg_cfg[1].def = 0x03; return regmap_multi_reg_write(lt9611->regmap, reg_cfg, ARRAY_SIZE(reg_cfg)); @@ -159,12 +136,12 @@ static void lt9611_mipi_video_setup(struct lt9611 *lt9611, hactive = mode->hdisplay; hsync_len = mode->hsync_end - mode->hsync_start; hfront_porch = mode->hsync_start - mode->hdisplay; - hsync_porch = hsync_len + mode->htotal - mode->hsync_end; + hsync_porch = mode->htotal - mode->hsync_start; vactive = mode->vdisplay; vsync_len = mode->vsync_end - mode->vsync_start; vfront_porch = mode->vsync_start - mode->vdisplay; - vsync_porch = vsync_len + mode->vtotal - mode->vsync_end; + vsync_porch = mode->vtotal - mode->vsync_start; regmap_write(lt9611->regmap, 0x830d, (u8)(v_total / 256)); regmap_write(lt9611->regmap, 0x830e, (u8)(v_total % 256)); @@ -187,12 +164,14 @@ static void lt9611_mipi_video_setup(struct lt9611 *lt9611, regmap_write(lt9611->regmap, 0x8319, (u8)(hfront_porch % 256)); - regmap_write(lt9611->regmap, 0x831a, (u8)(hsync_porch / 256)); + regmap_write(lt9611->regmap, 0x831a, (u8)(hsync_porch / 256) | + ((hfront_porch / 256) << 4)); regmap_write(lt9611->regmap, 0x831b, (u8)(hsync_porch % 256)); } -static void lt9611_pcr_setup(struct lt9611 *lt9611, const struct drm_display_mode *mode) +static void lt9611_pcr_setup(struct lt9611 *lt9611, const struct drm_display_mode *mode, unsigned int postdiv) { + unsigned int pcr_m = mode->clock * 5 * postdiv / 27000; const struct reg_sequence reg_cfg[] = { { 0x830b, 0x01 }, { 0x830c, 0x10 }, @@ -207,45 +186,40 @@ static void lt9611_pcr_setup(struct lt9611 *lt9611, const struct drm_display_mod /* stage 2 */ { 0x834a, 0x40 }, - { 0x831d, 0x10 }, /* MK limit */ { 0x832d, 0x38 }, { 0x8331, 0x08 }, }; - const struct reg_sequence reg_cfg2[] = { - { 0x830b, 0x03 }, - { 0x830c, 0xd0 }, - { 0x8348, 0x03 }, - { 0x8349, 0xe0 }, - { 0x8324, 0x72 }, - { 0x8325, 0x00 }, - { 0x832a, 0x01 }, - { 0x834a, 0x10 }, - { 0x831d, 0x10 }, - { 0x8326, 0x37 }, - }; + u8 pol = 0x10; - regmap_multi_reg_write(lt9611->regmap, reg_cfg, ARRAY_SIZE(reg_cfg)); + if (mode->flags & DRM_MODE_FLAG_NHSYNC) + pol |= 0x2; + if (mode->flags & DRM_MODE_FLAG_NVSYNC) + pol |= 0x1; + regmap_write(lt9611->regmap, 0x831d, pol); - switch (mode->hdisplay) { - case 640: - regmap_write(lt9611->regmap, 0x8326, 0x14); - break; - case 1920: - regmap_write(lt9611->regmap, 0x8326, 0x37); - break; - case 3840: - regmap_multi_reg_write(lt9611->regmap, reg_cfg2, ARRAY_SIZE(reg_cfg2)); - break; + regmap_multi_reg_write(lt9611->regmap, reg_cfg, ARRAY_SIZE(reg_cfg)); + if (lt9611->dsi1_node) { + unsigned int hact = mode->hdisplay; + + hact >>= 2; + hact += 0x50; + hact = min(hact, 0x3e0U); + regmap_write(lt9611->regmap, 0x830b, hact / 256); + regmap_write(lt9611->regmap, 0x830c, hact % 256); + regmap_write(lt9611->regmap, 0x8348, hact / 256); + regmap_write(lt9611->regmap, 0x8349, hact % 256); } + regmap_write(lt9611->regmap, 0x8326, pcr_m); + /* pcr rst */ regmap_write(lt9611->regmap, 0x8011, 0x5a); regmap_write(lt9611->regmap, 0x8011, 0xfa); } -static int lt9611_pll_setup(struct lt9611 *lt9611, const struct drm_display_mode *mode) +static int lt9611_pll_setup(struct lt9611 *lt9611, const struct drm_display_mode *mode, unsigned int *postdiv) { unsigned int pclk = mode->clock; const struct reg_sequence reg_cfg[] = { @@ -264,12 +238,16 @@ static int lt9611_pll_setup(struct lt9611 *lt9611, const struct drm_display_mode regmap_multi_reg_write(lt9611->regmap, reg_cfg, ARRAY_SIZE(reg_cfg)); - if (pclk > 150000) + if (pclk > 150000) { regmap_write(lt9611->regmap, 0x812d, 0x88); - else if (pclk > 70000) + *postdiv = 1; + } else if (pclk > 70000) { regmap_write(lt9611->regmap, 0x812d, 0x99); - else + *postdiv = 2; + } else { regmap_write(lt9611->regmap, 0x812d, 0xaa); + *postdiv = 4; + } /* * first divide pclk by 2 first @@ -354,13 +332,55 @@ end: return temp; } -static void lt9611_hdmi_tx_digital(struct lt9611 *lt9611) +static void lt9611_hdmi_set_infoframes(struct lt9611 *lt9611, + struct drm_connector *connector, + struct drm_display_mode *mode) { - regmap_write(lt9611->regmap, 0x8443, 0x46 - lt9611->vic); - regmap_write(lt9611->regmap, 0x8447, lt9611->vic); - regmap_write(lt9611->regmap, 0x843d, 0x0a); /* UD1 infoframe */ + union hdmi_infoframe infoframe; + ssize_t len; + u8 iframes = 0x0a; /* UD1 infoframe */ + u8 buf[32]; + int ret; + int i; - regmap_write(lt9611->regmap, 0x82d6, 0x8c); + ret = drm_hdmi_avi_infoframe_from_display_mode(&infoframe.avi, + connector, + mode); + if (ret < 0) + goto out; + + len = hdmi_infoframe_pack(&infoframe, buf, sizeof(buf)); + if (len < 0) + goto out; + + for (i = 0; i < len; i++) + regmap_write(lt9611->regmap, 0x8440 + i, buf[i]); + + ret = drm_hdmi_vendor_infoframe_from_display_mode(&infoframe.vendor.hdmi, + connector, + mode); + if (ret < 0) + goto out; + + len = hdmi_infoframe_pack(&infoframe, buf, sizeof(buf)); + if (len < 0) + goto out; + + for (i = 0; i < len; i++) + regmap_write(lt9611->regmap, 0x8474 + i, buf[i]); + + iframes |= 0x20; + +out: + regmap_write(lt9611->regmap, 0x843d, iframes); /* UD1 infoframe */ +} + +static void lt9611_hdmi_tx_digital(struct lt9611 *lt9611, bool is_hdmi) +{ + if (is_hdmi) + regmap_write(lt9611->regmap, 0x82d6, 0x8c); + else + regmap_write(lt9611->regmap, 0x82d6, 0x0c); regmap_write(lt9611->regmap, 0x82d7, 0x04); } @@ -449,12 +469,11 @@ static void lt9611_sleep_setup(struct lt9611 *lt9611) { 0x8023, 0x01 }, { 0x8157, 0x03 }, /* set addr pin as output */ { 0x8149, 0x0b }, - { 0x8151, 0x30 }, /* disable IRQ */ + { 0x8102, 0x48 }, /* MIPI Rx power down */ { 0x8123, 0x80 }, { 0x8130, 0x00 }, - { 0x8100, 0x01 }, /* bandgap power down */ - { 0x8101, 0x00 }, /* system clk power down */ + { 0x8011, 0x0a }, }; regmap_multi_reg_write(lt9611->regmap, @@ -565,24 +584,9 @@ static int lt9611_regulator_enable(struct lt9611 *lt9611) return 0; } -static struct lt9611_mode *lt9611_find_mode(const struct drm_display_mode *mode) -{ - int i; - - for (i = 0; i < ARRAY_SIZE(lt9611_modes); i++) { - if (lt9611_modes[i].hdisplay == mode->hdisplay && - lt9611_modes[i].vdisplay == mode->vdisplay && - lt9611_modes[i].vrefresh == drm_mode_vrefresh(mode)) { - return <9611_modes[i]; - } - } - - return NULL; -} - -/* connector funcs */ -static enum drm_connector_status __lt9611_detect(struct lt9611 *lt9611) +static enum drm_connector_status lt9611_bridge_detect(struct drm_bridge *bridge) { + struct lt9611 *lt9611 = bridge_to_lt9611(bridge); unsigned int reg_val = 0; int connected = 0; @@ -595,12 +599,6 @@ static enum drm_connector_status __lt9611_detect(struct lt9611 *lt9611) return lt9611->status; } -static enum drm_connector_status -lt9611_connector_detect(struct drm_connector *connector, bool force) -{ - return __lt9611_detect(connector_to_lt9611(connector)); -} - static int lt9611_read_edid(struct lt9611 *lt9611) { unsigned int temp; @@ -682,36 +680,37 @@ lt9611_get_edid_block(void *data, u8 *buf, unsigned int block, size_t len) return 0; } -static int lt9611_connector_get_modes(struct drm_connector *connector) -{ - struct lt9611 *lt9611 = connector_to_lt9611(connector); - unsigned int count; - struct edid *edid; - - lt9611_power_on(lt9611); - edid = drm_do_get_edid(connector, lt9611_get_edid_block, lt9611); - drm_connector_update_edid_property(connector, edid); - count = drm_add_edid_modes(connector, edid); - kfree(edid); - - return count; -} - -static enum drm_mode_status -lt9611_connector_mode_valid(struct drm_connector *connector, - struct drm_display_mode *mode) -{ - struct lt9611_mode *lt9611_mode = lt9611_find_mode(mode); - - return lt9611_mode ? MODE_OK : MODE_BAD; -} - /* bridge funcs */ static void lt9611_bridge_atomic_enable(struct drm_bridge *bridge, struct drm_bridge_state *old_bridge_state) { struct lt9611 *lt9611 = bridge_to_lt9611(bridge); + struct drm_atomic_state *state = old_bridge_state->base.state; + struct drm_connector *connector; + struct drm_connector_state *conn_state; + struct drm_crtc_state *crtc_state; + struct drm_display_mode *mode; + unsigned int postdiv; + + connector = drm_atomic_get_new_connector_for_encoder(state, bridge->encoder); + if (WARN_ON(!connector)) + return; + + conn_state = drm_atomic_get_new_connector_state(state, connector); + if (WARN_ON(!conn_state)) + return; + + crtc_state = drm_atomic_get_new_crtc_state(state, conn_state->crtc); + if (WARN_ON(!crtc_state)) + return; + + mode = &crtc_state->adjusted_mode; + + lt9611_mipi_input_digital(lt9611, mode); + lt9611_pll_setup(lt9611, mode, &postdiv); + lt9611_mipi_video_setup(lt9611, mode); + lt9611_pcr_setup(lt9611, mode, postdiv); if (lt9611_power_on(lt9611)) { dev_err(lt9611->dev, "power on failed\n"); @@ -719,7 +718,8 @@ lt9611_bridge_atomic_enable(struct drm_bridge *bridge, } lt9611_mipi_input_analog(lt9611); - lt9611_hdmi_tx_digital(lt9611); + lt9611_hdmi_set_infoframes(lt9611, connector, mode); + lt9611_hdmi_tx_digital(lt9611, connector->display_info.is_hdmi); lt9611_hdmi_tx_phy(lt9611); msleep(500); @@ -750,25 +750,10 @@ lt9611_bridge_atomic_disable(struct drm_bridge *bridge, } } -static struct -drm_connector_helper_funcs lt9611_bridge_connector_helper_funcs = { - .get_modes = lt9611_connector_get_modes, - .mode_valid = lt9611_connector_mode_valid, -}; - -static const struct drm_connector_funcs lt9611_bridge_connector_funcs = { - .fill_modes = drm_helper_probe_single_connector_modes, - .detect = lt9611_connector_detect, - .destroy = drm_connector_cleanup, - .reset = drm_atomic_helper_connector_reset, - .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state, - .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, -}; - static struct mipi_dsi_device *lt9611_attach_dsi(struct lt9611 *lt9611, struct device_node *dsi_node) { - const struct mipi_dsi_device_info info = { "lt9611", 0, NULL }; + const struct mipi_dsi_device_info info = { "lt9611", 0, lt9611->dev->of_node}; struct mipi_dsi_device *dsi; struct mipi_dsi_host *host; struct device *dev = lt9611->dev; @@ -800,70 +785,54 @@ static struct mipi_dsi_device *lt9611_attach_dsi(struct lt9611 *lt9611, return dsi; } -static int lt9611_connector_init(struct drm_bridge *bridge, struct lt9611 *lt9611) -{ - int ret; - - ret = drm_connector_init(bridge->dev, <9611->connector, - <9611_bridge_connector_funcs, - DRM_MODE_CONNECTOR_HDMIA); - if (ret) { - DRM_ERROR("Failed to initialize connector with drm\n"); - return ret; - } - - drm_connector_helper_add(<9611->connector, - <9611_bridge_connector_helper_funcs); - - if (!bridge->encoder) { - DRM_ERROR("Parent encoder object not found"); - return -ENODEV; - } - - drm_connector_attach_encoder(<9611->connector, bridge->encoder); - - return 0; -} - static int lt9611_bridge_attach(struct drm_bridge *bridge, enum drm_bridge_attach_flags flags) { struct lt9611 *lt9611 = bridge_to_lt9611(bridge); - int ret; - if (!(flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR)) { - ret = lt9611_connector_init(bridge, lt9611); - if (ret < 0) - return ret; - } - - return 0; + return drm_bridge_attach(bridge->encoder, lt9611->next_bridge, + bridge, flags); } static enum drm_mode_status lt9611_bridge_mode_valid(struct drm_bridge *bridge, const struct drm_display_info *info, const struct drm_display_mode *mode) { - struct lt9611_mode *lt9611_mode = lt9611_find_mode(mode); struct lt9611 *lt9611 = bridge_to_lt9611(bridge); - if (!lt9611_mode) - return MODE_BAD; - else if (lt9611_mode->intfs > 1 && !lt9611->dsi1) + if (mode->hdisplay > 3840) + return MODE_BAD_HVALUE; + + if (mode->vdisplay > 2160) + return MODE_BAD_VVALUE; + + if (mode->hdisplay == 3840 && + mode->vdisplay == 2160 && + drm_mode_vrefresh(mode) > 30) + return MODE_CLOCK_HIGH; + + if (mode->hdisplay > 2000 && !lt9611->dsi1_node) return MODE_PANEL; else return MODE_OK; } -static void lt9611_bridge_pre_enable(struct drm_bridge *bridge) +static void lt9611_bridge_atomic_pre_enable(struct drm_bridge *bridge, + struct drm_bridge_state *old_bridge_state) { struct lt9611 *lt9611 = bridge_to_lt9611(bridge); + static const struct reg_sequence reg_cfg[] = { + { 0x8102, 0x12 }, + { 0x8123, 0x40 }, + { 0x8130, 0xea }, + { 0x8011, 0xfa }, + }; if (!lt9611->sleep) return; - lt9611_reset(lt9611); - regmap_write(lt9611->regmap, 0x80ee, 0x01); + regmap_multi_reg_write(lt9611->regmap, + reg_cfg, ARRAY_SIZE(reg_cfg)); lt9611->sleep = false; } @@ -877,33 +846,6 @@ lt9611_bridge_atomic_post_disable(struct drm_bridge *bridge, lt9611_sleep_setup(lt9611); } -static void lt9611_bridge_mode_set(struct drm_bridge *bridge, - const struct drm_display_mode *mode, - const struct drm_display_mode *adj_mode) -{ - struct lt9611 *lt9611 = bridge_to_lt9611(bridge); - struct hdmi_avi_infoframe avi_frame; - int ret; - - lt9611_bridge_pre_enable(bridge); - - lt9611_mipi_input_digital(lt9611, mode); - lt9611_pll_setup(lt9611, mode); - lt9611_mipi_video_setup(lt9611, mode); - lt9611_pcr_setup(lt9611, mode); - - ret = drm_hdmi_avi_infoframe_from_display_mode(&avi_frame, - <9611->connector, - mode); - if (!ret) - lt9611->vic = avi_frame.video_code; -} - -static enum drm_connector_status lt9611_bridge_detect(struct drm_bridge *bridge) -{ - return __lt9611_detect(bridge_to_lt9611(bridge)); -} - static struct edid *lt9611_bridge_get_edid(struct drm_bridge *bridge, struct drm_connector *connector) { @@ -949,11 +891,11 @@ lt9611_atomic_get_input_bus_fmts(struct drm_bridge *bridge, static const struct drm_bridge_funcs lt9611_bridge_funcs = { .attach = lt9611_bridge_attach, .mode_valid = lt9611_bridge_mode_valid, - .mode_set = lt9611_bridge_mode_set, .detect = lt9611_bridge_detect, .get_edid = lt9611_bridge_get_edid, .hpd_enable = lt9611_bridge_hpd_enable, + .atomic_pre_enable = lt9611_bridge_atomic_pre_enable, .atomic_enable = lt9611_bridge_atomic_enable, .atomic_disable = lt9611_bridge_atomic_disable, .atomic_post_disable = lt9611_bridge_atomic_post_disable, @@ -976,7 +918,7 @@ static int lt9611_parse_dt(struct device *dev, lt9611->ac_mode = of_property_read_bool(dev->of_node, "lt,ac-mode"); - return 0; + return drm_of_find_panel_or_bridge(dev->of_node, 2, -1, NULL, <9611->next_bridge); } static int lt9611_gpio_init(struct lt9611 *lt9611) |