diff options
Diffstat (limited to 'drivers/gpu/drm/tidss')
| -rw-r--r-- | drivers/gpu/drm/tidss/Makefile | 3 | ||||
| -rw-r--r-- | drivers/gpu/drm/tidss/tidss_crtc.c | 4 | ||||
| -rw-r--r-- | drivers/gpu/drm/tidss/tidss_dispc.c | 287 | ||||
| -rw-r--r-- | drivers/gpu/drm/tidss/tidss_dispc.h | 20 | ||||
| -rw-r--r-- | drivers/gpu/drm/tidss/tidss_dispc_regs.h | 29 | ||||
| -rw-r--r-- | drivers/gpu/drm/tidss/tidss_drv.c | 10 | ||||
| -rw-r--r-- | drivers/gpu/drm/tidss/tidss_drv.h | 5 | ||||
| -rw-r--r-- | drivers/gpu/drm/tidss/tidss_encoder.c | 10 | ||||
| -rw-r--r-- | drivers/gpu/drm/tidss/tidss_kms.c | 4 | ||||
| -rw-r--r-- | drivers/gpu/drm/tidss/tidss_oldi.c | 598 | ||||
| -rw-r--r-- | drivers/gpu/drm/tidss/tidss_oldi.h | 43 | ||||
| -rw-r--r-- | drivers/gpu/drm/tidss/tidss_plane.c | 2 |
12 files changed, 921 insertions, 94 deletions
diff --git a/drivers/gpu/drm/tidss/Makefile b/drivers/gpu/drm/tidss/Makefile index 312645271014..b6d6becf1683 100644 --- a/drivers/gpu/drm/tidss/Makefile +++ b/drivers/gpu/drm/tidss/Makefile @@ -7,6 +7,7 @@ tidss-y := tidss_crtc.o \ tidss_irq.o \ tidss_plane.o \ tidss_scale_coefs.o \ - tidss_dispc.o + tidss_dispc.o \ + tidss_oldi.o obj-$(CONFIG_DRM_TIDSS) += tidss.o diff --git a/drivers/gpu/drm/tidss/tidss_crtc.c b/drivers/gpu/drm/tidss/tidss_crtc.c index 94f8e3178df5..a2f40a5c7703 100644 --- a/drivers/gpu/drm/tidss/tidss_crtc.c +++ b/drivers/gpu/drm/tidss/tidss_crtc.c @@ -130,7 +130,7 @@ static void tidss_crtc_position_planes(struct tidss_device *tidss, !to_tidss_crtc_state(cstate)->plane_pos_changed) return; - for (layer = 0; layer < tidss->feat->num_planes; layer++) { + for (layer = 0; layer < tidss->feat->num_vids ; layer++) { struct drm_plane_state *pstate; struct drm_plane *plane; bool layer_active = false; @@ -271,7 +271,7 @@ static void tidss_crtc_atomic_disable(struct drm_crtc *crtc, * another videoport, the DSS will report sync lost issues. Disable all * the layers here as a work-around. */ - for (u32 layer = 0; layer < tidss->feat->num_planes; layer++) + for (u32 layer = 0; layer < tidss->feat->num_vids; layer++) dispc_ovr_enable_layer(tidss->dispc, tcrtc->hw_videoport, layer, false); diff --git a/drivers/gpu/drm/tidss/tidss_dispc.c b/drivers/gpu/drm/tidss/tidss_dispc.c index cacb5f3d8085..c0277fa36425 100644 --- a/drivers/gpu/drm/tidss/tidss_dispc.c +++ b/drivers/gpu/drm/tidss/tidss_dispc.c @@ -103,9 +103,16 @@ const struct dispc_features dispc_k2g_feats = { }, }, - .num_planes = 1, - .vid_name = { "vid1" }, - .vid_lite = { false }, + .num_vids = 1, + + .vid_info = { + { + .name = "vid1", + .is_lite = false, + .hw_id = 0, + }, + }, + .vid_order = { 0 }, }; @@ -139,7 +146,7 @@ static const u16 tidss_am65x_common_regs[DISPC_COMMON_REG_TABLE_LEN] = { const struct dispc_features dispc_am65x_feats = { .max_pclk_khz = { [DISPC_VP_DPI] = 165000, - [DISPC_VP_OLDI] = 165000, + [DISPC_VP_OLDI_AM65X] = 165000, }, .scaling = { @@ -169,7 +176,7 @@ const struct dispc_features dispc_am65x_feats = { .vp_name = { "vp1", "vp2" }, .ovr_name = { "ovr1", "ovr2" }, .vpclk_name = { "vp1", "vp2" }, - .vp_bus_type = { DISPC_VP_OLDI, DISPC_VP_DPI }, + .vp_bus_type = { DISPC_VP_OLDI_AM65X, DISPC_VP_DPI }, .vp_feat = { .color = { .has_ctm = true, @@ -178,11 +185,22 @@ const struct dispc_features dispc_am65x_feats = { }, }, - .num_planes = 2, + .num_vids = 2, /* note: vid is plane_id 0 and vidl1 is plane_id 1 */ - .vid_name = { "vid", "vidl1" }, - .vid_lite = { false, true, }, - .vid_order = { 1, 0 }, + .vid_info = { + { + .name = "vid", + .is_lite = false, + .hw_id = 0, + }, + { + .name = "vidl1", + .is_lite = true, + .hw_id = 1, + }, + }, + + .vid_order = {1, 0}, }; static const u16 tidss_j721e_common_regs[DISPC_COMMON_REG_TABLE_LEN] = { @@ -267,9 +285,32 @@ const struct dispc_features dispc_j721e_feats = { .gamma_type = TIDSS_GAMMA_10BIT, }, }, - .num_planes = 4, - .vid_name = { "vid1", "vidl1", "vid2", "vidl2" }, - .vid_lite = { 0, 1, 0, 1, }, + + .num_vids = 4, + + .vid_info = { + { + .name = "vid1", + .is_lite = false, + .hw_id = 0, + }, + { + .name = "vidl1", + .is_lite = true, + .hw_id = 1, + }, + { + .name = "vid2", + .is_lite = false, + .hw_id = 2, + }, + { + .name = "vidl2", + .is_lite = true, + .hw_id = 3, + }, + }, + .vid_order = { 1, 3, 0, 2 }, }; @@ -315,11 +356,23 @@ const struct dispc_features dispc_am625_feats = { }, }, - .num_planes = 2, + .num_vids = 2, + /* note: vid is plane_id 0 and vidl1 is plane_id 1 */ - .vid_name = { "vid", "vidl1" }, - .vid_lite = { false, true, }, - .vid_order = { 1, 0 }, + .vid_info = { + { + .name = "vid", + .is_lite = false, + .hw_id = 0, + }, + { + .name = "vidl1", + .is_lite = true, + .hw_id = 1, + } + }, + + .vid_order = {1, 0}, }; const struct dispc_features dispc_am62a7_feats = { @@ -369,11 +422,58 @@ const struct dispc_features dispc_am62a7_feats = { }, }, - .num_planes = 2, - /* note: vid is plane_id 0 and vidl1 is plane_id 1 */ - .vid_name = { "vid", "vidl1" }, - .vid_lite = { false, true, }, - .vid_order = { 1, 0 }, + .num_vids = 2, + + .vid_info = { + { + .name = "vid", + .is_lite = false, + .hw_id = 0, + }, + { + .name = "vidl1", + .is_lite = true, + .hw_id = 1, + } + }, + + .vid_order = {1, 0}, +}; + +const struct dispc_features dispc_am62l_feats = { + .max_pclk_khz = { + [DISPC_VP_DPI] = 165000, + }, + + .subrev = DISPC_AM62L, + + .common = "common", + .common_regs = tidss_am65x_common_regs, + + .num_vps = 1, + .vp_name = { "vp1" }, + .ovr_name = { "ovr1" }, + .vpclk_name = { "vp1" }, + .vp_bus_type = { DISPC_VP_DPI }, + + .vp_feat = { .color = { + .has_ctm = true, + .gamma_size = 256, + .gamma_type = TIDSS_GAMMA_8BIT, + }, + }, + + .num_vids = 1, + + .vid_info = { + { + .name = "vidl1", + .is_lite = true, + .hw_id = 1, + } + }, + + .vid_order = {0}, }; static const u16 *dispc_common_regmap; @@ -391,7 +491,7 @@ struct dispc_device { void __iomem *base_ovr[TIDSS_MAX_PORTS]; void __iomem *base_vp[TIDSS_MAX_PORTS]; - struct regmap *oldi_io_ctrl; + struct regmap *am65x_oldi_io_ctrl; struct clk *vp_clk[TIDSS_MAX_PORTS]; @@ -466,6 +566,29 @@ static u32 dispc_vp_read(struct dispc_device *dispc, u32 hw_videoport, u16 reg) return ioread32(base + reg); } +int tidss_configure_oldi(struct tidss_device *tidss, u32 hw_videoport, + u32 oldi_cfg) +{ + u32 count = 0; + u32 oldi_reset_bit = BIT(5 + hw_videoport); + + dispc_vp_write(tidss->dispc, hw_videoport, DISPC_VP_DSS_OLDI_CFG, oldi_cfg); + + while (!(oldi_reset_bit & dispc_read(tidss->dispc, DSS_SYSSTATUS)) && + count < 10000) + count++; + + if (!(oldi_reset_bit & dispc_read(tidss->dispc, DSS_SYSSTATUS))) + return -ETIMEDOUT; + + return 0; +} + +void tidss_disable_oldi(struct tidss_device *tidss, u32 hw_videoport) +{ + dispc_vp_write(tidss->dispc, hw_videoport, DISPC_VP_DSS_OLDI_CFG, 0); +} + /* * TRM gives bitfields as start:end, where start is the higher bit * number. For example 7:0 @@ -734,7 +857,8 @@ static void dispc_k3_vp_write_irqstatus(struct dispc_device *dispc, static dispc_irq_t dispc_k3_vid_read_irqstatus(struct dispc_device *dispc, u32 hw_plane) { - u32 stat = dispc_read(dispc, DISPC_VID_IRQSTATUS(hw_plane)); + u32 hw_id = dispc->feat->vid_info[hw_plane].hw_id; + u32 stat = dispc_read(dispc, DISPC_VID_IRQSTATUS(hw_id)); return dispc_vid_irq_from_raw(stat, hw_plane); } @@ -742,9 +866,10 @@ static dispc_irq_t dispc_k3_vid_read_irqstatus(struct dispc_device *dispc, static void dispc_k3_vid_write_irqstatus(struct dispc_device *dispc, u32 hw_plane, dispc_irq_t vidstat) { + u32 hw_id = dispc->feat->vid_info[hw_plane].hw_id; u32 stat = dispc_vid_irq_to_raw(vidstat, hw_plane); - dispc_write(dispc, DISPC_VID_IRQSTATUS(hw_plane), stat); + dispc_write(dispc, DISPC_VID_IRQSTATUS(hw_id), stat); } static dispc_irq_t dispc_k3_vp_read_irqenable(struct dispc_device *dispc, @@ -766,7 +891,8 @@ static void dispc_k3_vp_set_irqenable(struct dispc_device *dispc, static dispc_irq_t dispc_k3_vid_read_irqenable(struct dispc_device *dispc, u32 hw_plane) { - u32 stat = dispc_read(dispc, DISPC_VID_IRQENABLE(hw_plane)); + u32 hw_id = dispc->feat->vid_info[hw_plane].hw_id; + u32 stat = dispc_read(dispc, DISPC_VID_IRQENABLE(hw_id)); return dispc_vid_irq_from_raw(stat, hw_plane); } @@ -774,9 +900,10 @@ static dispc_irq_t dispc_k3_vid_read_irqenable(struct dispc_device *dispc, static void dispc_k3_vid_set_irqenable(struct dispc_device *dispc, u32 hw_plane, dispc_irq_t vidstat) { + u32 hw_id = dispc->feat->vid_info[hw_plane].hw_id; u32 stat = dispc_vid_irq_to_raw(vidstat, hw_plane); - dispc_write(dispc, DISPC_VID_IRQENABLE(hw_plane), stat); + dispc_write(dispc, DISPC_VID_IRQENABLE(hw_id), stat); } static @@ -788,7 +915,8 @@ void dispc_k3_clear_irqstatus(struct dispc_device *dispc, dispc_irq_t clearmask) if (clearmask & DSS_IRQ_VP_MASK(i)) dispc_k3_vp_write_irqstatus(dispc, i, clearmask); } - for (i = 0; i < dispc->feat->num_planes; ++i) { + + for (i = 0; i < dispc->feat->num_vids; ++i) { if (clearmask & DSS_IRQ_PLANE_MASK(i)) dispc_k3_vid_write_irqstatus(dispc, i, clearmask); } @@ -809,7 +937,7 @@ dispc_irq_t dispc_k3_read_and_clear_irqstatus(struct dispc_device *dispc) for (i = 0; i < dispc->feat->num_vps; ++i) status |= dispc_k3_vp_read_irqstatus(dispc, i); - for (i = 0; i < dispc->feat->num_planes; ++i) + for (i = 0; i < dispc->feat->num_vids; ++i) status |= dispc_k3_vid_read_irqstatus(dispc, i); dispc_k3_clear_irqstatus(dispc, status); @@ -825,7 +953,7 @@ static dispc_irq_t dispc_k3_read_irqenable(struct dispc_device *dispc) for (i = 0; i < dispc->feat->num_vps; ++i) enable |= dispc_k3_vp_read_irqenable(dispc, i); - for (i = 0; i < dispc->feat->num_planes; ++i) + for (i = 0; i < dispc->feat->num_vids; ++i) enable |= dispc_k3_vid_read_irqenable(dispc, i); return enable; @@ -851,12 +979,15 @@ static void dispc_k3_set_irqenable(struct dispc_device *dispc, main_disable |= BIT(i); /* VP IRQ */ } - for (i = 0; i < dispc->feat->num_planes; ++i) { + for (i = 0; i < dispc->feat->num_vids; ++i) { + u32 hw_id = dispc->feat->vid_info[i].hw_id; + dispc_k3_vid_set_irqenable(dispc, i, mask); + if (mask & DSS_IRQ_PLANE_MASK(i)) - main_enable |= BIT(i + 4); /* VID IRQ */ + main_enable |= BIT(hw_id + 4); /* VID IRQ */ else - main_disable |= BIT(i + 4); /* VID IRQ */ + main_disable |= BIT(hw_id + 4); /* VID IRQ */ } if (main_enable) @@ -879,6 +1010,7 @@ dispc_irq_t dispc_read_and_clear_irqstatus(struct dispc_device *dispc) return dispc_k2g_read_and_clear_irqstatus(dispc); case DISPC_AM625: case DISPC_AM62A7: + case DISPC_AM62L: case DISPC_AM65X: case DISPC_J721E: return dispc_k3_read_and_clear_irqstatus(dispc); @@ -896,6 +1028,7 @@ void dispc_set_irqenable(struct dispc_device *dispc, dispc_irq_t mask) break; case DISPC_AM625: case DISPC_AM62A7: + case DISPC_AM62L: case DISPC_AM65X: case DISPC_J721E: dispc_k3_set_irqenable(dispc, mask); @@ -906,13 +1039,11 @@ void dispc_set_irqenable(struct dispc_device *dispc, dispc_irq_t mask) } } -enum dispc_oldi_mode_reg_val { SPWG_18 = 0, JEIDA_24 = 1, SPWG_24 = 2 }; - struct dispc_bus_format { u32 bus_fmt; u32 data_width; bool is_oldi_fmt; - enum dispc_oldi_mode_reg_val oldi_mode_reg_val; + enum oldi_mode_reg_val am65x_oldi_mode_reg_val; }; static const struct dispc_bus_format dispc_bus_formats[] = { @@ -956,7 +1087,7 @@ int dispc_vp_bus_check(struct dispc_device *dispc, u32 hw_videoport, return -EINVAL; } - if (dispc->feat->vp_bus_type[hw_videoport] != DISPC_VP_OLDI && + if (dispc->feat->vp_bus_type[hw_videoport] != DISPC_VP_OLDI_AM65X && fmt->is_oldi_fmt) { dev_dbg(dispc->dev, "%s: %s is not OLDI-port\n", __func__, dispc->feat->vp_name[hw_videoport]); @@ -966,23 +1097,23 @@ int dispc_vp_bus_check(struct dispc_device *dispc, u32 hw_videoport, return 0; } -static void dispc_oldi_tx_power(struct dispc_device *dispc, bool power) +static void dispc_am65x_oldi_tx_power(struct dispc_device *dispc, bool power) { - u32 val = power ? 0 : OLDI_PWRDN_TX; + u32 val = power ? 0 : AM65X_OLDI_PWRDN_TX; - if (WARN_ON(!dispc->oldi_io_ctrl)) + if (WARN_ON(!dispc->am65x_oldi_io_ctrl)) return; - regmap_update_bits(dispc->oldi_io_ctrl, OLDI_DAT0_IO_CTRL, - OLDI_PWRDN_TX, val); - regmap_update_bits(dispc->oldi_io_ctrl, OLDI_DAT1_IO_CTRL, - OLDI_PWRDN_TX, val); - regmap_update_bits(dispc->oldi_io_ctrl, OLDI_DAT2_IO_CTRL, - OLDI_PWRDN_TX, val); - regmap_update_bits(dispc->oldi_io_ctrl, OLDI_DAT3_IO_CTRL, - OLDI_PWRDN_TX, val); - regmap_update_bits(dispc->oldi_io_ctrl, OLDI_CLK_IO_CTRL, - OLDI_PWRDN_TX, val); + regmap_update_bits(dispc->am65x_oldi_io_ctrl, AM65X_OLDI_DAT0_IO_CTRL, + AM65X_OLDI_PWRDN_TX, val); + regmap_update_bits(dispc->am65x_oldi_io_ctrl, AM65X_OLDI_DAT1_IO_CTRL, + AM65X_OLDI_PWRDN_TX, val); + regmap_update_bits(dispc->am65x_oldi_io_ctrl, AM65X_OLDI_DAT2_IO_CTRL, + AM65X_OLDI_PWRDN_TX, val); + regmap_update_bits(dispc->am65x_oldi_io_ctrl, AM65X_OLDI_DAT3_IO_CTRL, + AM65X_OLDI_PWRDN_TX, val); + regmap_update_bits(dispc->am65x_oldi_io_ctrl, AM65X_OLDI_CLK_IO_CTRL, + AM65X_OLDI_PWRDN_TX, val); } static void dispc_set_num_datalines(struct dispc_device *dispc, @@ -1011,8 +1142,8 @@ static void dispc_set_num_datalines(struct dispc_device *dispc, VP_REG_FLD_MOD(dispc, hw_videoport, DISPC_VP_CONTROL, v, 10, 8); } -static void dispc_enable_oldi(struct dispc_device *dispc, u32 hw_videoport, - const struct dispc_bus_format *fmt) +static void dispc_enable_am65x_oldi(struct dispc_device *dispc, u32 hw_videoport, + const struct dispc_bus_format *fmt) { u32 oldi_cfg = 0; u32 oldi_reset_bit = BIT(5 + hw_videoport); @@ -1031,7 +1162,7 @@ static void dispc_enable_oldi(struct dispc_device *dispc, u32 hw_videoport, oldi_cfg |= BIT(7); /* DEPOL */ - oldi_cfg = FLD_MOD(oldi_cfg, fmt->oldi_mode_reg_val, 3, 1); + oldi_cfg = FLD_MOD(oldi_cfg, fmt->am65x_oldi_mode_reg_val, 3, 1); oldi_cfg |= BIT(12); /* SOFTRST */ @@ -1060,10 +1191,10 @@ void dispc_vp_prepare(struct dispc_device *dispc, u32 hw_videoport, if (WARN_ON(!fmt)) return; - if (dispc->feat->vp_bus_type[hw_videoport] == DISPC_VP_OLDI) { - dispc_oldi_tx_power(dispc, true); + if (dispc->feat->vp_bus_type[hw_videoport] == DISPC_VP_OLDI_AM65X) { + dispc_am65x_oldi_tx_power(dispc, true); - dispc_enable_oldi(dispc, hw_videoport, fmt); + dispc_enable_am65x_oldi(dispc, hw_videoport, fmt); } } @@ -1119,7 +1250,7 @@ void dispc_vp_enable(struct dispc_device *dispc, u32 hw_videoport, align = true; /* always use DE_HIGH for OLDI */ - if (dispc->feat->vp_bus_type[hw_videoport] == DISPC_VP_OLDI) + if (dispc->feat->vp_bus_type[hw_videoport] == DISPC_VP_OLDI_AM65X) ieo = false; dispc_vp_write(dispc, hw_videoport, DISPC_VP_POL_FREQ, @@ -1145,10 +1276,10 @@ void dispc_vp_disable(struct dispc_device *dispc, u32 hw_videoport) void dispc_vp_unprepare(struct dispc_device *dispc, u32 hw_videoport) { - if (dispc->feat->vp_bus_type[hw_videoport] == DISPC_VP_OLDI) { + if (dispc->feat->vp_bus_type[hw_videoport] == DISPC_VP_OLDI_AM65X) { dispc_vp_write(dispc, hw_videoport, DISPC_VP_DSS_OLDI_CFG, 0); - dispc_oldi_tx_power(dispc, false); + dispc_am65x_oldi_tx_power(dispc, false); } } @@ -1310,7 +1441,6 @@ void dispc_vp_disable_clk(struct dispc_device *dispc, u32 hw_videoport) * Calculate the percentage difference between the requested pixel clock rate * and the effective rate resulting from calculating the clock divider value. */ -static unsigned int dispc_pclk_diff(unsigned long rate, unsigned long real_rate) { int r = rate / 100, rr = real_rate / 100; @@ -1358,8 +1488,10 @@ static void dispc_am65x_ovr_set_plane(struct dispc_device *dispc, u32 hw_plane, u32 hw_videoport, u32 x, u32 y, u32 layer) { + u32 hw_id = dispc->feat->vid_info[hw_plane].hw_id; + OVR_REG_FLD_MOD(dispc, hw_videoport, DISPC_OVR_ATTRIBUTES(layer), - hw_plane, 4, 1); + hw_id, 4, 1); OVR_REG_FLD_MOD(dispc, hw_videoport, DISPC_OVR_ATTRIBUTES(layer), x, 17, 6); OVR_REG_FLD_MOD(dispc, hw_videoport, DISPC_OVR_ATTRIBUTES(layer), @@ -1370,8 +1502,10 @@ static void dispc_j721e_ovr_set_plane(struct dispc_device *dispc, u32 hw_plane, u32 hw_videoport, u32 x, u32 y, u32 layer) { + u32 hw_id = dispc->feat->vid_info[hw_plane].hw_id; + OVR_REG_FLD_MOD(dispc, hw_videoport, DISPC_OVR_ATTRIBUTES(layer), - hw_plane, 4, 1); + hw_id, 4, 1); OVR_REG_FLD_MOD(dispc, hw_videoport, DISPC_OVR_ATTRIBUTES2(layer), x, 13, 0); OVR_REG_FLD_MOD(dispc, hw_videoport, DISPC_OVR_ATTRIBUTES2(layer), @@ -1388,6 +1522,7 @@ void dispc_ovr_set_plane(struct dispc_device *dispc, u32 hw_plane, break; case DISPC_AM625: case DISPC_AM62A7: + case DISPC_AM62L: case DISPC_AM65X: dispc_am65x_ovr_set_plane(dispc, hw_plane, hw_videoport, x, y, layer); @@ -2025,7 +2160,7 @@ int dispc_plane_check(struct dispc_device *dispc, u32 hw_plane, const struct drm_plane_state *state, u32 hw_videoport) { - bool lite = dispc->feat->vid_lite[hw_plane]; + bool lite = dispc->feat->vid_info[hw_plane].is_lite; u32 fourcc = state->fb->format->format; bool need_scaling = state->src_w >> 16 != state->crtc_w || state->src_h >> 16 != state->crtc_h; @@ -2096,7 +2231,7 @@ void dispc_plane_setup(struct dispc_device *dispc, u32 hw_plane, const struct drm_plane_state *state, u32 hw_videoport) { - bool lite = dispc->feat->vid_lite[hw_plane]; + bool lite = dispc->feat->vid_info[hw_plane].is_lite; u32 fourcc = state->fb->format->format; u16 cpp = state->fb->format->cpp[0]; u32 fb_width = state->fb->pitches[0] / cpp; @@ -2210,7 +2345,7 @@ static void dispc_k2g_plane_init(struct dispc_device *dispc) /* MFLAG_START = MFLAGNORMALSTARTMODE */ REG_FLD_MOD(dispc, DISPC_GLOBAL_MFLAG_ATTRIBUTE, 0, 6, 6); - for (hw_plane = 0; hw_plane < dispc->feat->num_planes; hw_plane++) { + for (hw_plane = 0; hw_plane < dispc->feat->num_vids; hw_plane++) { u32 size = dispc_vid_get_fifo_size(dispc, hw_plane); u32 thr_low, thr_high; u32 mflag_low, mflag_high; @@ -2226,7 +2361,7 @@ static void dispc_k2g_plane_init(struct dispc_device *dispc) dev_dbg(dispc->dev, "%s: bufsize %u, buf_threshold %u/%u, mflag threshold %u/%u preload %u\n", - dispc->feat->vid_name[hw_plane], + dispc->feat->vid_info[hw_plane].name, size, thr_high, thr_low, mflag_high, mflag_low, @@ -2265,7 +2400,7 @@ static void dispc_k3_plane_init(struct dispc_device *dispc) /* MFLAG_START = MFLAGNORMALSTARTMODE */ REG_FLD_MOD(dispc, DISPC_GLOBAL_MFLAG_ATTRIBUTE, 0, 6, 6); - for (hw_plane = 0; hw_plane < dispc->feat->num_planes; hw_plane++) { + for (hw_plane = 0; hw_plane < dispc->feat->num_vids; hw_plane++) { u32 size = dispc_vid_get_fifo_size(dispc, hw_plane); u32 thr_low, thr_high; u32 mflag_low, mflag_high; @@ -2281,7 +2416,7 @@ static void dispc_k3_plane_init(struct dispc_device *dispc) dev_dbg(dispc->dev, "%s: bufsize %u, buf_threshold %u/%u, mflag threshold %u/%u preload %u\n", - dispc->feat->vid_name[hw_plane], + dispc->feat->vid_info[hw_plane].name, size, thr_high, thr_low, mflag_high, mflag_low, @@ -2308,6 +2443,7 @@ static void dispc_plane_init(struct dispc_device *dispc) break; case DISPC_AM625: case DISPC_AM62A7: + case DISPC_AM62L: case DISPC_AM65X: case DISPC_J721E: dispc_k3_plane_init(dispc); @@ -2416,6 +2552,7 @@ static void dispc_vp_write_gamma_table(struct dispc_device *dispc, break; case DISPC_AM625: case DISPC_AM62A7: + case DISPC_AM62L: case DISPC_AM65X: dispc_am65x_vp_write_gamma_table(dispc, hw_videoport); break; @@ -2735,15 +2872,15 @@ static int dispc_iomap_resource(struct platform_device *pdev, const char *name, static int dispc_init_am65x_oldi_io_ctrl(struct device *dev, struct dispc_device *dispc) { - dispc->oldi_io_ctrl = + dispc->am65x_oldi_io_ctrl = syscon_regmap_lookup_by_phandle(dev->of_node, "ti,am65x-oldi-io-ctrl"); - if (PTR_ERR(dispc->oldi_io_ctrl) == -ENODEV) { - dispc->oldi_io_ctrl = NULL; - } else if (IS_ERR(dispc->oldi_io_ctrl)) { + if (PTR_ERR(dispc->am65x_oldi_io_ctrl) == -ENODEV) { + dispc->am65x_oldi_io_ctrl = NULL; + } else if (IS_ERR(dispc->am65x_oldi_io_ctrl)) { dev_err(dev, "%s: syscon_regmap_lookup_by_phandle failed %ld\n", - __func__, PTR_ERR(dispc->oldi_io_ctrl)); - return PTR_ERR(dispc->oldi_io_ctrl); + __func__, PTR_ERR(dispc->am65x_oldi_io_ctrl)); + return PTR_ERR(dispc->am65x_oldi_io_ctrl); } return 0; } @@ -2898,8 +3035,8 @@ int dispc_init(struct tidss_device *tidss) if (r) return r; - for (i = 0; i < dispc->feat->num_planes; i++) { - r = dispc_iomap_resource(pdev, dispc->feat->vid_name[i], + for (i = 0; i < dispc->feat->num_vids; i++) { + r = dispc_iomap_resource(pdev, dispc->feat->vid_info[i].name, &dispc->base_vid[i]); if (r) return r; diff --git a/drivers/gpu/drm/tidss/tidss_dispc.h b/drivers/gpu/drm/tidss/tidss_dispc.h index 086327d51a90..b8614f62186c 100644 --- a/drivers/gpu/drm/tidss/tidss_dispc.h +++ b/drivers/gpu/drm/tidss/tidss_dispc.h @@ -46,13 +46,19 @@ struct dispc_features_scaling { u32 xinc_max; }; +struct dispc_vid_info { + const char *name; /* Should match dt reg names */ + u32 hw_id; + bool is_lite; +}; + struct dispc_errata { bool i2000; /* DSS Does Not Support YUV Pixel Data Formats */ }; enum dispc_vp_bus_type { DISPC_VP_DPI, /* DPI output */ - DISPC_VP_OLDI, /* OLDI (LVDS) output */ + DISPC_VP_OLDI_AM65X, /* OLDI (LVDS) output for AM65x DSS */ DISPC_VP_INTERNAL, /* SoC internal routing */ DISPC_VP_TIED_OFF, /* Tied off / Unavailable */ DISPC_VP_MAX_BUS_TYPE, @@ -61,6 +67,7 @@ enum dispc_vp_bus_type { enum dispc_dss_subrevision { DISPC_K2G, DISPC_AM625, + DISPC_AM62L, DISPC_AM62A7, DISPC_AM65X, DISPC_J721E, @@ -82,18 +89,23 @@ struct dispc_features { const char *vpclk_name[TIDSS_MAX_PORTS]; /* Should match dt clk names */ const enum dispc_vp_bus_type vp_bus_type[TIDSS_MAX_PORTS]; struct tidss_vp_feat vp_feat; - u32 num_planes; - const char *vid_name[TIDSS_MAX_PLANES]; /* Should match dt reg names */ - bool vid_lite[TIDSS_MAX_PLANES]; + u32 num_vids; + struct dispc_vid_info vid_info[TIDSS_MAX_PLANES]; u32 vid_order[TIDSS_MAX_PLANES]; }; extern const struct dispc_features dispc_k2g_feats; extern const struct dispc_features dispc_am625_feats; extern const struct dispc_features dispc_am62a7_feats; +extern const struct dispc_features dispc_am62l_feats; extern const struct dispc_features dispc_am65x_feats; extern const struct dispc_features dispc_j721e_feats; +int tidss_configure_oldi(struct tidss_device *tidss, u32 hw_videoport, + u32 oldi_cfg); +void tidss_disable_oldi(struct tidss_device *tidss, u32 hw_videoport); +unsigned int dispc_pclk_diff(unsigned long rate, unsigned long real_rate); + void dispc_set_irqenable(struct dispc_device *dispc, dispc_irq_t mask); dispc_irq_t dispc_read_and_clear_irqstatus(struct dispc_device *dispc); diff --git a/drivers/gpu/drm/tidss/tidss_dispc_regs.h b/drivers/gpu/drm/tidss/tidss_dispc_regs.h index e88148e44937..50a3f28250ef 100644 --- a/drivers/gpu/drm/tidss/tidss_dispc_regs.h +++ b/drivers/gpu/drm/tidss/tidss_dispc_regs.h @@ -226,18 +226,35 @@ enum dispc_common_regs { #define DISPC_VP_DSS_DMA_THREADSIZE 0x170 /* J721E */ #define DISPC_VP_DSS_DMA_THREADSIZE_STATUS 0x174 /* J721E */ +/* OLDI Config Bits (DISPC_VP_DSS_OLDI_CFG) */ +#define OLDI_ENABLE BIT(0) +#define OLDI_MAP (BIT(1) | BIT(2) | BIT(3)) +#define OLDI_SRC BIT(4) +#define OLDI_CLONE_MODE BIT(5) +#define OLDI_MASTERSLAVE BIT(6) +#define OLDI_DEPOL BIT(7) +#define OLDI_MSB BIT(8) +#define OLDI_LBEN BIT(9) +#define OLDI_LBDATA BIT(10) +#define OLDI_DUALMODESYNC BIT(11) +#define OLDI_SOFTRST BIT(12) +#define OLDI_TPATCFG BIT(13) + +/* LVDS Format values for OLDI_MAP field in DISPC_VP_OLDI_CFG register */ +enum oldi_mode_reg_val { SPWG_18 = 0, JEIDA_24 = 1, SPWG_24 = 2 }; + /* * OLDI IO_CTRL register offsets. On AM654 the registers are found * from CTRL_MMR0, there the syscon regmap should map 0x14 bytes from * CTRLMMR0P1_OLDI_DAT0_IO_CTRL to CTRLMMR0P1_OLDI_CLK_IO_CTRL * register range. */ -#define OLDI_DAT0_IO_CTRL 0x00 -#define OLDI_DAT1_IO_CTRL 0x04 -#define OLDI_DAT2_IO_CTRL 0x08 -#define OLDI_DAT3_IO_CTRL 0x0C -#define OLDI_CLK_IO_CTRL 0x10 +#define AM65X_OLDI_DAT0_IO_CTRL 0x00 +#define AM65X_OLDI_DAT1_IO_CTRL 0x04 +#define AM65X_OLDI_DAT2_IO_CTRL 0x08 +#define AM65X_OLDI_DAT3_IO_CTRL 0x0C +#define AM65X_OLDI_CLK_IO_CTRL 0x10 -#define OLDI_PWRDN_TX BIT(8) +#define AM65X_OLDI_PWRDN_TX BIT(8) #endif /* __TIDSS_DISPC_REGS_H */ diff --git a/drivers/gpu/drm/tidss/tidss_drv.c b/drivers/gpu/drm/tidss/tidss_drv.c index d4652e8cc28c..a1b12e52aca4 100644 --- a/drivers/gpu/drm/tidss/tidss_drv.c +++ b/drivers/gpu/drm/tidss/tidss_drv.c @@ -24,6 +24,7 @@ #include "tidss_drv.h" #include "tidss_kms.h" #include "tidss_irq.h" +#include "tidss_oldi.h" /* Power management */ @@ -147,6 +148,10 @@ static int tidss_probe(struct platform_device *pdev) return ret; } + ret = tidss_oldi_init(tidss); + if (ret) + return dev_err_probe(dev, ret, "failed to init OLDI\n"); + pm_runtime_enable(dev); pm_runtime_set_autosuspend_delay(dev, 1000); @@ -203,6 +208,8 @@ err_runtime_suspend: pm_runtime_dont_use_autosuspend(dev); pm_runtime_disable(dev); + tidss_oldi_deinit(tidss); + return ret; } @@ -227,6 +234,8 @@ static void tidss_remove(struct platform_device *pdev) pm_runtime_dont_use_autosuspend(dev); pm_runtime_disable(dev); + tidss_oldi_deinit(tidss); + /* devm allocated dispc goes away with the dev so mark it NULL */ dispc_remove(tidss); @@ -242,6 +251,7 @@ static const struct of_device_id tidss_of_table[] = { { .compatible = "ti,k2g-dss", .data = &dispc_k2g_feats, }, { .compatible = "ti,am625-dss", .data = &dispc_am625_feats, }, { .compatible = "ti,am62a7-dss", .data = &dispc_am62a7_feats, }, + { .compatible = "ti,am62l-dss", .data = &dispc_am62l_feats, }, { .compatible = "ti,am65x-dss", .data = &dispc_am65x_feats, }, { .compatible = "ti,j721e-dss", .data = &dispc_j721e_feats, }, { } diff --git a/drivers/gpu/drm/tidss/tidss_drv.h b/drivers/gpu/drm/tidss/tidss_drv.h index 7f4f4282bc04..d14d5d28f0a3 100644 --- a/drivers/gpu/drm/tidss/tidss_drv.h +++ b/drivers/gpu/drm/tidss/tidss_drv.h @@ -11,8 +11,10 @@ #define TIDSS_MAX_PORTS 4 #define TIDSS_MAX_PLANES 4 +#define TIDSS_MAX_OLDI_TXES 2 typedef u32 dispc_irq_t; +struct tidss_oldi; struct tidss_device { struct drm_device ddev; /* DRM device for DSS */ @@ -27,6 +29,9 @@ struct tidss_device { unsigned int num_planes; struct drm_plane *planes[TIDSS_MAX_PLANES]; + unsigned int num_oldis; + struct tidss_oldi *oldis[TIDSS_MAX_OLDI_TXES]; + unsigned int irq; /* protects the irq masks field and irqenable/irqstatus registers */ diff --git a/drivers/gpu/drm/tidss/tidss_encoder.c b/drivers/gpu/drm/tidss/tidss_encoder.c index 95b4aeff2775..81a04f767770 100644 --- a/drivers/gpu/drm/tidss/tidss_encoder.c +++ b/drivers/gpu/drm/tidss/tidss_encoder.c @@ -90,14 +90,18 @@ int tidss_encoder_create(struct tidss_device *tidss, struct drm_connector *connector; int ret; - t_enc = drmm_simple_encoder_alloc(&tidss->ddev, struct tidss_encoder, - encoder, encoder_type); + t_enc = devm_drm_bridge_alloc(tidss->dev, struct tidss_encoder, + bridge, &tidss_bridge_funcs); if (IS_ERR(t_enc)) return PTR_ERR(t_enc); + ret = drm_simple_encoder_init(&tidss->ddev, &t_enc->encoder, + encoder_type); + if (ret) + return ret; + t_enc->tidss = tidss; t_enc->next_bridge = next_bridge; - t_enc->bridge.funcs = &tidss_bridge_funcs; enc = &t_enc->encoder; enc->possible_crtcs = possible_crtcs; diff --git a/drivers/gpu/drm/tidss/tidss_kms.c b/drivers/gpu/drm/tidss/tidss_kms.c index f371518f8697..c34eb90cddbe 100644 --- a/drivers/gpu/drm/tidss/tidss_kms.c +++ b/drivers/gpu/drm/tidss/tidss_kms.c @@ -115,7 +115,7 @@ static int tidss_dispc_modeset_init(struct tidss_device *tidss) const struct dispc_features *feat = tidss->feat; u32 max_vps = feat->num_vps; - u32 max_planes = feat->num_planes; + u32 max_planes = feat->num_vids; struct pipe pipes[TIDSS_MAX_PORTS]; u32 num_pipes = 0; @@ -144,7 +144,7 @@ static int tidss_dispc_modeset_init(struct tidss_device *tidss) dev_dbg(dev, "Setting up panel for port %d\n", i); switch (feat->vp_bus_type[i]) { - case DISPC_VP_OLDI: + case DISPC_VP_OLDI_AM65X: enc_type = DRM_MODE_ENCODER_LVDS; conn_type = DRM_MODE_CONNECTOR_LVDS; break; diff --git a/drivers/gpu/drm/tidss/tidss_oldi.c b/drivers/gpu/drm/tidss/tidss_oldi.c new file mode 100644 index 000000000000..8f25159d0666 --- /dev/null +++ b/drivers/gpu/drm/tidss/tidss_oldi.c @@ -0,0 +1,598 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Copyright (C) 2025 - Texas Instruments Incorporated + * + * Aradhya Bhatia <a-bhatia1@ti.com> + */ + +#include <linux/clk.h> +#include <linux/of.h> +#include <linux/of_graph.h> +#include <linux/mfd/syscon.h> +#include <linux/media-bus-format.h> +#include <linux/regmap.h> + +#include <drm/drm_atomic_helper.h> +#include <drm/drm_bridge.h> +#include <drm/drm_of.h> + +#include "tidss_dispc.h" +#include "tidss_dispc_regs.h" +#include "tidss_oldi.h" + +struct tidss_oldi { + struct tidss_device *tidss; + struct device *dev; + + struct drm_bridge bridge; + struct drm_bridge *next_bridge; + + enum tidss_oldi_link_type link_type; + const struct oldi_bus_format *bus_format; + u32 oldi_instance; + int companion_instance; /* -1 when OLDI TX operates in Single-Link */ + u32 parent_vp; + + struct clk *serial; + struct regmap *io_ctrl; +}; + +struct oldi_bus_format { + u32 bus_fmt; + u32 data_width; + enum oldi_mode_reg_val oldi_mode_reg_val; + u32 input_bus_fmt; +}; + +static const struct oldi_bus_format oldi_bus_formats[] = { + { MEDIA_BUS_FMT_RGB666_1X7X3_SPWG, 18, SPWG_18, MEDIA_BUS_FMT_RGB666_1X18 }, + { MEDIA_BUS_FMT_RGB888_1X7X4_SPWG, 24, SPWG_24, MEDIA_BUS_FMT_RGB888_1X24 }, + { MEDIA_BUS_FMT_RGB888_1X7X4_JEIDA, 24, JEIDA_24, MEDIA_BUS_FMT_RGB888_1X24 }, +}; + +#define OLDI_IDLE_CLK_HZ 25000000 /*25 MHz */ + +static inline struct tidss_oldi * +drm_bridge_to_tidss_oldi(struct drm_bridge *bridge) +{ + return container_of(bridge, struct tidss_oldi, bridge); +} + +static int tidss_oldi_bridge_attach(struct drm_bridge *bridge, + struct drm_encoder *encoder, + enum drm_bridge_attach_flags flags) +{ + struct tidss_oldi *oldi = drm_bridge_to_tidss_oldi(bridge); + + if (!oldi->next_bridge) { + dev_err(oldi->dev, + "%s: OLDI%u Failure attach next bridge\n", + __func__, oldi->oldi_instance); + return -ENODEV; + } + + if (!(flags & DRM_BRIDGE_ATTACH_NO_CONNECTOR)) { + dev_err(oldi->dev, + "%s: OLDI%u DRM_BRIDGE_ATTACH_NO_CONNECTOR is mandatory.\n", + __func__, oldi->oldi_instance); + return -EINVAL; + } + + return drm_bridge_attach(encoder, oldi->next_bridge, bridge, flags); +} + +static int +tidss_oldi_set_serial_clk(struct tidss_oldi *oldi, unsigned long rate) +{ + unsigned long new_rate; + int ret; + + ret = clk_set_rate(oldi->serial, rate); + if (ret) { + dev_err(oldi->dev, + "OLDI%u: failed to set serial clk rate to %lu Hz\n", + oldi->oldi_instance, rate); + return ret; + } + + new_rate = clk_get_rate(oldi->serial); + + if (dispc_pclk_diff(rate, new_rate) > 5) + dev_warn(oldi->dev, + "OLDI%u Clock rate %lu differs over 5%% from requested %lu\n", + oldi->oldi_instance, new_rate, rate); + + dev_dbg(oldi->dev, "OLDI%u: new rate %lu Hz (requested %lu Hz)\n", + oldi->oldi_instance, clk_get_rate(oldi->serial), rate); + + return 0; +} + +static void tidss_oldi_tx_power(struct tidss_oldi *oldi, bool enable) +{ + u32 mask; + + /* + * The power control bits are Active Low, and remain powered off by + * default. That is, the bits are set to 1. To power on the OLDI TXes, + * the bits must be cleared to 0. Since there are cases where not all + * OLDI TXes are being used, the power logic selectively powers them + * on. + * Setting the variable 'val' to particular bit masks, makes sure that + * the undesired OLDI TXes remain powered off. + */ + + if (enable) { + switch (oldi->link_type) { + case OLDI_MODE_SINGLE_LINK: + /* Power-on only the required OLDI TX's IO*/ + mask = OLDI_PWRDOWN_TX(oldi->oldi_instance) | OLDI_PWRDN_BG; + break; + case OLDI_MODE_CLONE_SINGLE_LINK: + case OLDI_MODE_DUAL_LINK: + /* Power-on both the OLDI TXes' IOs */ + mask = OLDI_PWRDOWN_TX(oldi->oldi_instance) | + OLDI_PWRDOWN_TX(oldi->companion_instance) | + OLDI_PWRDN_BG; + break; + default: + /* + * This code execution should never reach here as any + * OLDI with an unsupported OLDI mode would never get + * registered in the first place. + * However, power-off the OLDI in concern just in case. + */ + mask = OLDI_PWRDOWN_TX(oldi->oldi_instance); + enable = false; + break; + } + } else { + switch (oldi->link_type) { + case OLDI_MODE_CLONE_SINGLE_LINK: + case OLDI_MODE_DUAL_LINK: + mask = OLDI_PWRDOWN_TX(oldi->oldi_instance) | + OLDI_PWRDOWN_TX(oldi->companion_instance) | + OLDI_PWRDN_BG; + break; + case OLDI_MODE_SINGLE_LINK: + default: + mask = OLDI_PWRDOWN_TX(oldi->oldi_instance); + break; + } + } + + regmap_update_bits(oldi->io_ctrl, OLDI_PD_CTRL, mask, enable ? 0 : mask); +} + +static int tidss_oldi_config(struct tidss_oldi *oldi) +{ + const struct oldi_bus_format *bus_fmt = NULL; + u32 oldi_cfg = 0; + int ret; + + bus_fmt = oldi->bus_format; + + /* + * MASTERSLAVE and SRC bits of OLDI Config are always set to 0. + */ + + if (bus_fmt->data_width == 24) + oldi_cfg |= OLDI_MSB; + else if (bus_fmt->data_width != 18) + dev_warn(oldi->dev, + "OLDI%u: DSS port width %d not supported\n", + oldi->oldi_instance, bus_fmt->data_width); + + oldi_cfg |= OLDI_DEPOL; + + oldi_cfg = (oldi_cfg & (~OLDI_MAP)) | (bus_fmt->oldi_mode_reg_val << 1); + + oldi_cfg |= OLDI_SOFTRST; + + oldi_cfg |= OLDI_ENABLE; + + switch (oldi->link_type) { + case OLDI_MODE_SINGLE_LINK: + /* All configuration is done for this mode. */ + break; + + case OLDI_MODE_CLONE_SINGLE_LINK: + oldi_cfg |= OLDI_CLONE_MODE; + break; + + case OLDI_MODE_DUAL_LINK: + /* data-mapping field also indicates dual-link mode */ + oldi_cfg |= BIT(3); + oldi_cfg |= OLDI_DUALMODESYNC; + break; + + default: + dev_err(oldi->dev, "OLDI%u: Unsupported mode.\n", + oldi->oldi_instance); + return -EINVAL; + } + + ret = tidss_configure_oldi(oldi->tidss, oldi->parent_vp, oldi_cfg); + if (ret == -ETIMEDOUT) + dev_warn(oldi->dev, "OLDI%u: timeout waiting for OLDI reset done.\n", + oldi->oldi_instance); + + return ret; +} + +static void tidss_oldi_atomic_pre_enable(struct drm_bridge *bridge, + struct drm_atomic_state *state) +{ + struct tidss_oldi *oldi = drm_bridge_to_tidss_oldi(bridge); + struct drm_connector *connector; + struct drm_connector_state *conn_state; + struct drm_crtc_state *crtc_state; + struct drm_display_mode *mode; + + if (oldi->link_type == OLDI_MODE_SECONDARY_CLONE_SINGLE_LINK) + return; + + 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; + + /* Configure the OLDI params*/ + tidss_oldi_config(oldi); + + /* Set the OLDI serial clock (7 times the pixel clock) */ + tidss_oldi_set_serial_clk(oldi, mode->clock * 7 * 1000); + + /* Enable OLDI IO power */ + tidss_oldi_tx_power(oldi, true); +} + +static void tidss_oldi_atomic_post_disable(struct drm_bridge *bridge, + struct drm_atomic_state *state) +{ + struct tidss_oldi *oldi = drm_bridge_to_tidss_oldi(bridge); + + if (oldi->link_type == OLDI_MODE_SECONDARY_CLONE_SINGLE_LINK) + return; + + /* Disable OLDI IO power */ + tidss_oldi_tx_power(oldi, false); + + /* Set the OLDI serial clock to IDLE Frequency */ + tidss_oldi_set_serial_clk(oldi, OLDI_IDLE_CLK_HZ); + + /* Clear OLDI Config */ + tidss_disable_oldi(oldi->tidss, oldi->parent_vp); +} + +#define MAX_INPUT_SEL_FORMATS 1 + +static u32 *tidss_oldi_atomic_get_input_bus_fmts(struct drm_bridge *bridge, + struct drm_bridge_state *bridge_state, + struct drm_crtc_state *crtc_state, + struct drm_connector_state *conn_state, + u32 output_fmt, + unsigned int *num_input_fmts) +{ + struct tidss_oldi *oldi = drm_bridge_to_tidss_oldi(bridge); + u32 *input_fmts; + int i; + + *num_input_fmts = 0; + + for (i = 0; i < ARRAY_SIZE(oldi_bus_formats); i++) + if (oldi_bus_formats[i].bus_fmt == output_fmt) + break; + + if (i == ARRAY_SIZE(oldi_bus_formats)) + return NULL; + + input_fmts = kcalloc(MAX_INPUT_SEL_FORMATS, sizeof(*input_fmts), + GFP_KERNEL); + if (!input_fmts) + return NULL; + + *num_input_fmts = 1; + input_fmts[0] = oldi_bus_formats[i].input_bus_fmt; + oldi->bus_format = &oldi_bus_formats[i]; + + return input_fmts; +} + +static const struct drm_bridge_funcs tidss_oldi_bridge_funcs = { + .attach = tidss_oldi_bridge_attach, + .atomic_pre_enable = tidss_oldi_atomic_pre_enable, + .atomic_post_disable = tidss_oldi_atomic_post_disable, + .atomic_get_input_bus_fmts = tidss_oldi_atomic_get_input_bus_fmts, + .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, +}; + +static int get_oldi_mode(struct device_node *oldi_tx, int *companion_instance) +{ + struct device_node *companion; + struct device_node *port0, *port1; + u32 companion_reg; + bool secondary_oldi = false; + int pixel_order; + + /* + * Find if the OLDI is paired with another OLDI for combined OLDI + * operation (dual-link or clone). + */ + companion = of_parse_phandle(oldi_tx, "ti,companion-oldi", 0); + if (!companion) + /* + * The OLDI TX does not have a companion, nor is it a + * secondary OLDI. It will operate independently. + */ + return OLDI_MODE_SINGLE_LINK; + + if (of_property_read_u32(companion, "reg", &companion_reg)) + return OLDI_MODE_UNSUPPORTED; + + if (companion_reg > (TIDSS_MAX_OLDI_TXES - 1)) + /* Invalid companion OLDI reg value. */ + return OLDI_MODE_UNSUPPORTED; + + *companion_instance = (int)companion_reg; + + if (of_property_read_bool(oldi_tx, "ti,secondary-oldi")) + secondary_oldi = true; + + /* + * We need to work out if the sink is expecting us to function in + * dual-link mode. We do this by looking at the DT port nodes, the + * OLDI TX ports are connected to. If they are marked as expecting + * even pixels and odd pixels, then we need to enable dual-link. + */ + port0 = of_graph_get_port_by_id(oldi_tx, 1); + port1 = of_graph_get_port_by_id(companion, 1); + pixel_order = drm_of_lvds_get_dual_link_pixel_order(port0, port1); + of_node_put(port0); + of_node_put(port1); + of_node_put(companion); + + switch (pixel_order) { + case -EINVAL: + /* + * The dual-link properties were not found in at least + * one of the sink nodes. Since 2 OLDI ports are present + * in the DT, it can be safely assumed that the required + * configuration is Clone Mode. + */ + return (secondary_oldi ? OLDI_MODE_SECONDARY_CLONE_SINGLE_LINK : + OLDI_MODE_CLONE_SINGLE_LINK); + + case DRM_LVDS_DUAL_LINK_ODD_EVEN_PIXELS: + /* + * Primary OLDI can only support "ODD" pixels. So, from its + * perspective, the pixel order has to be ODD-EVEN. + */ + return (secondary_oldi ? OLDI_MODE_UNSUPPORTED : + OLDI_MODE_DUAL_LINK); + + case DRM_LVDS_DUAL_LINK_EVEN_ODD_PIXELS: + /* + * Secondary OLDI can only support "EVEN" pixels. So, from its + * perspective, the pixel order has to be EVEN-ODD. + */ + return (secondary_oldi ? OLDI_MODE_SECONDARY_DUAL_LINK : + OLDI_MODE_UNSUPPORTED); + + default: + return OLDI_MODE_UNSUPPORTED; + } +} + +static int get_parent_dss_vp(struct device_node *oldi_tx, u32 *parent_vp) +{ + struct device_node *ep, *dss_port; + int ret; + + ep = of_graph_get_endpoint_by_regs(oldi_tx, OLDI_INPUT_PORT, -1); + if (ep) { + dss_port = of_graph_get_remote_port(ep); + if (!dss_port) { + ret = -ENODEV; + goto err_return_ep_port; + } + + ret = of_property_read_u32(dss_port, "reg", parent_vp); + + of_node_put(dss_port); +err_return_ep_port: + of_node_put(ep); + return ret; + } + + return -ENODEV; +} + +static const struct drm_bridge_timings default_tidss_oldi_timings = { + .input_bus_flags = DRM_BUS_FLAG_SYNC_SAMPLE_NEGEDGE + | DRM_BUS_FLAG_DE_HIGH, +}; + +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->oldis[i] = NULL; + } + } +} + +int tidss_oldi_init(struct tidss_device *tidss) +{ + struct tidss_oldi *oldi; + struct device_node *child; + struct drm_bridge *bridge; + u32 parent_vp, oldi_instance; + int companion_instance = -1; + enum tidss_oldi_link_type link_type = OLDI_MODE_UNSUPPORTED; + struct device_node *oldi_parent; + int ret = 0; + + tidss->num_oldis = 0; + + oldi_parent = of_get_child_by_name(tidss->dev->of_node, "oldi-transmitters"); + if (!oldi_parent) + /* Return gracefully */ + return 0; + + for_each_available_child_of_node(oldi_parent, child) { + ret = get_parent_dss_vp(child, &parent_vp); + if (ret) { + if (ret == -ENODEV) { + /* + * ENODEV means that this particular OLDI node + * is not connected with the DSS, which is not + * a harmful case. There could be another OLDI + * which may still be connected. + * Continue to search for that. + */ + ret = 0; + continue; + } + goto err_put_node; + } + + ret = of_property_read_u32(child, "reg", &oldi_instance); + if (ret) + goto err_put_node; + + /* + * Now that it's confirmed that OLDI is connected with DSS, + * let's continue getting the OLDI sinks ahead and other OLDI + * properties. + */ + bridge = devm_drm_of_get_bridge(tidss->dev, child, + OLDI_OUTPUT_PORT, 0); + if (IS_ERR(bridge)) { + /* + * Either there was no OLDI sink in the devicetree, or + * the OLDI sink has not been added yet. In any case, + * return. + * We don't want to have an OLDI node connected to DSS + * but not to any sink. + */ + ret = dev_err_probe(tidss->dev, PTR_ERR(bridge), + "no panel/bridge for OLDI%u.\n", + oldi_instance); + goto err_put_node; + } + + link_type = get_oldi_mode(child, &companion_instance); + if (link_type == OLDI_MODE_UNSUPPORTED) { + ret = dev_err_probe(tidss->dev, -EINVAL, + "OLDI%u: Unsupported OLDI connection.\n", + oldi_instance); + goto err_put_node; + } else if ((link_type == OLDI_MODE_SECONDARY_CLONE_SINGLE_LINK) || + (link_type == OLDI_MODE_CLONE_SINGLE_LINK)) { + /* + * The OLDI driver cannot support OLDI clone mode + * properly at present. + * The clone mode requires 2 working encoder-bridge + * pipelines, generating from the same crtc. The DRM + * framework does not support this at present. If + * there were to be, say, 2 OLDI sink bridges each + * connected to an OLDI TXes, they couldn't both be + * supported simultaneously. + * This driver still has some code pertaining to OLDI + * clone mode configuration in DSS hardware for future, + * when there is a better infrastructure in the DRM + * framework to support 2 encoder-bridge pipelines + * simultaneously. + * Till that time, this driver shall error out if it + * detects a clone mode configuration. + */ + ret = dev_err_probe(tidss->dev, -EOPNOTSUPP, + "The OLDI driver does not support Clone Mode at present.\n"); + goto err_put_node; + } else if (link_type == OLDI_MODE_SECONDARY_DUAL_LINK) { + /* + * This is the secondary OLDI node, which serves as a + * companion to the primary OLDI, when it is configured + * for the dual-link mode. Since the primary OLDI will + * be a part of bridge chain, no need to put this one + * too. Continue onto the next OLDI node. + */ + continue; + } + + oldi = devm_drm_bridge_alloc(tidss->dev, struct tidss_oldi, bridge, + &tidss_oldi_bridge_funcs); + if (IS_ERR(oldi)) { + ret = PTR_ERR(oldi); + goto err_put_node; + } + + oldi->parent_vp = parent_vp; + oldi->oldi_instance = oldi_instance; + oldi->companion_instance = companion_instance; + oldi->link_type = link_type; + oldi->dev = tidss->dev; + oldi->next_bridge = bridge; + + /* + * Only the primary OLDI needs to reference the io-ctrl system + * registers, and the serial clock. + * We don't require a check for secondary OLDI in dual-link mode + * because the driver will not create a drm_bridge instance. + * But the driver will need to create a drm_bridge instance, + * for secondary OLDI in clone mode (once it is supported). + */ + if (link_type != OLDI_MODE_SECONDARY_CLONE_SINGLE_LINK) { + oldi->io_ctrl = syscon_regmap_lookup_by_phandle(child, + "ti,oldi-io-ctrl"); + if (IS_ERR(oldi->io_ctrl)) { + ret = dev_err_probe(oldi->dev, PTR_ERR(oldi->io_ctrl), + "OLDI%u: syscon_regmap_lookup_by_phandle failed.\n", + oldi_instance); + goto err_put_node; + } + + oldi->serial = of_clk_get_by_name(child, "serial"); + if (IS_ERR(oldi->serial)) { + ret = dev_err_probe(oldi->dev, PTR_ERR(oldi->serial), + "OLDI%u: Failed to get serial clock.\n", + oldi_instance); + goto err_put_node; + } + } + + /* Register the bridge. */ + oldi->bridge.of_node = child; + oldi->bridge.driver_private = oldi; + oldi->bridge.timings = &default_tidss_oldi_timings; + + tidss->oldis[tidss->num_oldis++] = oldi; + oldi->tidss = tidss; + + drm_bridge_add(&oldi->bridge); + } + + of_node_put(child); + of_node_put(oldi_parent); + + return 0; + +err_put_node: + of_node_put(child); + of_node_put(oldi_parent); + return ret; +} diff --git a/drivers/gpu/drm/tidss/tidss_oldi.h b/drivers/gpu/drm/tidss/tidss_oldi.h new file mode 100644 index 000000000000..8cd535c5ee65 --- /dev/null +++ b/drivers/gpu/drm/tidss/tidss_oldi.h @@ -0,0 +1,43 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * Copyright (C) 2025 - Texas Instruments Incorporated + * + * Aradhya Bhatia <a-bhatia1@ti.com> + */ + +#ifndef __TIDSS_OLDI_H__ +#define __TIDSS_OLDI_H__ + +#include "tidss_drv.h" + +struct tidss_oldi; + +/* OLDI PORTS */ +#define OLDI_INPUT_PORT 0 +#define OLDI_OUTPUT_PORT 1 + +/* Control MMR Registers */ + +/* Register offsets */ +#define OLDI_PD_CTRL 0x100 +#define OLDI_LB_CTRL 0x104 + +/* Power control bits */ +#define OLDI_PWRDOWN_TX(n) BIT(n) + +/* LVDS Bandgap reference Enable/Disable */ +#define OLDI_PWRDN_BG BIT(8) + +enum tidss_oldi_link_type { + OLDI_MODE_UNSUPPORTED, + OLDI_MODE_SINGLE_LINK, + OLDI_MODE_CLONE_SINGLE_LINK, + OLDI_MODE_SECONDARY_CLONE_SINGLE_LINK, + OLDI_MODE_DUAL_LINK, + OLDI_MODE_SECONDARY_DUAL_LINK, +}; + +int tidss_oldi_init(struct tidss_device *tidss); +void tidss_oldi_deinit(struct tidss_device *tidss); + +#endif /* __TIDSS_OLDI_H__ */ diff --git a/drivers/gpu/drm/tidss/tidss_plane.c b/drivers/gpu/drm/tidss/tidss_plane.c index 719412e6c346..142ae81951a0 100644 --- a/drivers/gpu/drm/tidss/tidss_plane.c +++ b/drivers/gpu/drm/tidss/tidss_plane.c @@ -200,7 +200,7 @@ struct tidss_plane *tidss_plane_create(struct tidss_device *tidss, struct tidss_plane *tplane; enum drm_plane_type type; u32 possible_crtcs; - u32 num_planes = tidss->feat->num_planes; + u32 num_planes = tidss->feat->num_vids; u32 color_encodings = (BIT(DRM_COLOR_YCBCR_BT601) | BIT(DRM_COLOR_YCBCR_BT709)); u32 color_ranges = (BIT(DRM_COLOR_YCBCR_FULL_RANGE) | |