diff options
Diffstat (limited to 'drivers/video/omap2/dss/dsi.c')
| -rw-r--r-- | drivers/video/omap2/dss/dsi.c | 260 |
1 files changed, 231 insertions, 29 deletions
diff --git a/drivers/video/omap2/dss/dsi.c b/drivers/video/omap2/dss/dsi.c index 77aca3e9a05..43c04a9889c 100644 --- a/drivers/video/omap2/dss/dsi.c +++ b/drivers/video/omap2/dss/dsi.c @@ -132,7 +132,7 @@ struct dsi_reg { u16 idx; }; #define DSI_IRQ_TA_TIMEOUT (1 << 20) #define DSI_IRQ_ERROR_MASK \ (DSI_IRQ_HS_TX_TIMEOUT | DSI_IRQ_LP_RX_TIMEOUT | DSI_IRQ_SYNC_LOST | \ - DSI_IRQ_TA_TIMEOUT) + DSI_IRQ_TA_TIMEOUT | DSI_IRQ_SYNC_LOST) #define DSI_IRQ_CHANNEL_MASK 0xf /* Virtual channel interrupts */ @@ -2472,6 +2472,12 @@ static int dsi_cio_init(struct omap_dss_device *dssdev) dsi_cio_timings(dsidev); + if (dssdev->panel.dsi_mode == OMAP_DSS_DSI_VIDEO_MODE) { + /* DDR_CLK_ALWAYS_ON */ + REG_FLD_MOD(dsidev, DSI_CLK_CTRL, + dssdev->panel.dsi_vm_data.ddr_clk_always_on, 13, 13); + } + dsi->ulps_enabled = false; DSSDBG("CIO init done\n"); @@ -2496,6 +2502,9 @@ static void dsi_cio_uninit(struct omap_dss_device *dssdev) struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev); struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); + /* DDR_CLK_ALWAYS_ON */ + REG_FLD_MOD(dsidev, DSI_CLK_CTRL, 0, 13, 13); + dsi_cio_power(dsidev, DSI_COMPLEXIO_POWER_OFF); dsi_disable_scp_clk(dsidev); dsi->disable_pads(dsidev->id, dsi_get_lane_mask(dssdev)); @@ -2799,6 +2808,10 @@ void omapdss_dsi_vc_enable_hs(struct omap_dss_device *dssdev, int channel, dsi_if_enable(dsidev, 1); dsi_force_tx_stop_mode_io(dsidev); + + /* start the DDR clock by sending a NULL packet */ + if (dssdev->panel.dsi_vm_data.ddr_clk_always_on && enable) + dsi_vc_send_null(dssdev, channel); } EXPORT_SYMBOL(omapdss_dsi_vc_enable_hs); @@ -3682,6 +3695,75 @@ static void dsi_set_hs_tx_timeout(struct platform_device *dsidev, ticks, x4 ? " x4" : "", x16 ? " x16" : "", (total_ticks * 1000) / (fck / 1000 / 1000)); } + +static void dsi_config_vp_num_line_buffers(struct omap_dss_device *dssdev) +{ + struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev); + int num_line_buffers; + + if (dssdev->panel.dsi_mode == OMAP_DSS_DSI_VIDEO_MODE) { + int bpp = dsi_get_pixel_size(dssdev->panel.dsi_pix_fmt); + unsigned line_buf_size = dsi_get_line_buf_size(dsidev); + struct omap_video_timings *timings = &dssdev->panel.timings; + /* + * Don't use line buffers if width is greater than the video + * port's line buffer size + */ + if (line_buf_size <= timings->x_res * bpp / 8) + num_line_buffers = 0; + else + num_line_buffers = 2; + } else { + /* Use maximum number of line buffers in command mode */ + num_line_buffers = 2; + } + + /* LINE_BUFFER */ + REG_FLD_MOD(dsidev, DSI_CTRL, num_line_buffers, 13, 12); +} + +static void dsi_config_vp_sync_events(struct omap_dss_device *dssdev) +{ + struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev); + int de_pol = dssdev->panel.dsi_vm_data.vp_de_pol; + int hsync_pol = dssdev->panel.dsi_vm_data.vp_hsync_pol; + int vsync_pol = dssdev->panel.dsi_vm_data.vp_vsync_pol; + bool vsync_end = dssdev->panel.dsi_vm_data.vp_vsync_end; + bool hsync_end = dssdev->panel.dsi_vm_data.vp_hsync_end; + u32 r; + + r = dsi_read_reg(dsidev, DSI_CTRL); + r = FLD_MOD(r, de_pol, 9, 9); /* VP_DE_POL */ + r = FLD_MOD(r, hsync_pol, 10, 10); /* VP_HSYNC_POL */ + r = FLD_MOD(r, vsync_pol, 11, 11); /* VP_VSYNC_POL */ + r = FLD_MOD(r, 1, 15, 15); /* VP_VSYNC_START */ + r = FLD_MOD(r, vsync_end, 16, 16); /* VP_VSYNC_END */ + r = FLD_MOD(r, 1, 17, 17); /* VP_HSYNC_START */ + r = FLD_MOD(r, hsync_end, 18, 18); /* VP_HSYNC_END */ + dsi_write_reg(dsidev, DSI_CTRL, r); +} + +static void dsi_config_blanking_modes(struct omap_dss_device *dssdev) +{ + struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev); + int blanking_mode = dssdev->panel.dsi_vm_data.blanking_mode; + int hfp_blanking_mode = dssdev->panel.dsi_vm_data.hfp_blanking_mode; + int hbp_blanking_mode = dssdev->panel.dsi_vm_data.hbp_blanking_mode; + int hsa_blanking_mode = dssdev->panel.dsi_vm_data.hsa_blanking_mode; + u32 r; + + /* + * 0 = TX FIFO packets sent or LPS in corresponding blanking periods + * 1 = Long blanking packets are sent in corresponding blanking periods + */ + r = dsi_read_reg(dsidev, DSI_CTRL); + r = FLD_MOD(r, blanking_mode, 20, 20); /* BLANKING_MODE */ + r = FLD_MOD(r, hfp_blanking_mode, 21, 21); /* HFP_BLANKING */ + r = FLD_MOD(r, hbp_blanking_mode, 22, 22); /* HBP_BLANKING */ + r = FLD_MOD(r, hsa_blanking_mode, 23, 23); /* HSA_BLANKING */ + dsi_write_reg(dsidev, DSI_CTRL, r); +} + static int dsi_proto_config(struct omap_dss_device *dssdev) { struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev); @@ -3725,7 +3807,6 @@ static int dsi_proto_config(struct omap_dss_device *dssdev) r = FLD_MOD(r, 1, 4, 4); /* VP_CLK_RATIO, always 1, see errata*/ r = FLD_MOD(r, buswidth, 7, 6); /* VP_DATA_BUS_WIDTH */ r = FLD_MOD(r, 0, 8, 8); /* VP_CLK_POL */ - r = FLD_MOD(r, 2, 13, 12); /* LINE_BUFFER, 2 lines */ r = FLD_MOD(r, 1, 14, 14); /* TRIGGER_RESET_MODE */ r = FLD_MOD(r, 1, 19, 19); /* EOT_ENABLE */ if (!dss_has_feature(FEAT_DSI_DCS_CMD_CONFIG_VC)) { @@ -3736,6 +3817,13 @@ static int dsi_proto_config(struct omap_dss_device *dssdev) dsi_write_reg(dsidev, DSI_CTRL, r); + dsi_config_vp_num_line_buffers(dssdev); + + if (dssdev->panel.dsi_mode == OMAP_DSS_DSI_VIDEO_MODE) { + dsi_config_vp_sync_events(dssdev); + dsi_config_blanking_modes(dssdev); + } + dsi_vc_initial_config(dsidev, 0); dsi_vc_initial_config(dsidev, 1); dsi_vc_initial_config(dsidev, 2); @@ -3754,6 +3842,7 @@ static void dsi_proto_timings(struct omap_dss_device *dssdev) unsigned ddr_clk_pre, ddr_clk_post; unsigned enter_hs_mode_lat, exit_hs_mode_lat; unsigned ths_eot; + int ndl = dsi_get_num_data_lanes_dssdev(dssdev); u32 r; r = dsi_read_reg(dsidev, DSI_DSIPHY_CFG0); @@ -3776,7 +3865,7 @@ static void dsi_proto_timings(struct omap_dss_device *dssdev) /* min 60ns + 52*UI */ tclk_post = ns2ddr(dsidev, 60) + 26; - ths_eot = DIV_ROUND_UP(4, dsi_get_num_data_lanes_dssdev(dssdev)); + ths_eot = DIV_ROUND_UP(4, ndl); ddr_clk_pre = DIV_ROUND_UP(tclk_pre + tlpx + tclk_zero + tclk_prepare, 4); @@ -3806,7 +3895,114 @@ static void dsi_proto_timings(struct omap_dss_device *dssdev) DSSDBG("enter_hs_mode_lat %u, exit_hs_mode_lat %u\n", enter_hs_mode_lat, exit_hs_mode_lat); + + if (dssdev->panel.dsi_mode == OMAP_DSS_DSI_VIDEO_MODE) { + /* TODO: Implement a video mode check_timings function */ + int hsa = dssdev->panel.dsi_vm_data.hsa; + int hfp = dssdev->panel.dsi_vm_data.hfp; + int hbp = dssdev->panel.dsi_vm_data.hbp; + int vsa = dssdev->panel.dsi_vm_data.vsa; + int vfp = dssdev->panel.dsi_vm_data.vfp; + int vbp = dssdev->panel.dsi_vm_data.vbp; + int window_sync = dssdev->panel.dsi_vm_data.window_sync; + bool hsync_end = dssdev->panel.dsi_vm_data.vp_hsync_end; + struct omap_video_timings *timings = &dssdev->panel.timings; + int bpp = dsi_get_pixel_size(dssdev->panel.dsi_pix_fmt); + int tl, t_he, width_bytes; + + t_he = hsync_end ? + ((hsa == 0 && ndl == 3) ? 1 : DIV_ROUND_UP(4, ndl)) : 0; + + width_bytes = DIV_ROUND_UP(timings->x_res * bpp, 8); + + /* TL = t_HS + HSA + t_HE + HFP + ceil((WC + 6) / NDL) + HBP */ + tl = DIV_ROUND_UP(4, ndl) + (hsync_end ? hsa : 0) + t_he + hfp + + DIV_ROUND_UP(width_bytes + 6, ndl) + hbp; + + DSSDBG("HBP: %d, HFP: %d, HSA: %d, TL: %d TXBYTECLKHS\n", hbp, + hfp, hsync_end ? hsa : 0, tl); + DSSDBG("VBP: %d, VFP: %d, VSA: %d, VACT: %d lines\n", vbp, vfp, + vsa, timings->y_res); + + r = dsi_read_reg(dsidev, DSI_VM_TIMING1); + r = FLD_MOD(r, hbp, 11, 0); /* HBP */ + r = FLD_MOD(r, hfp, 23, 12); /* HFP */ + r = FLD_MOD(r, hsync_end ? hsa : 0, 31, 24); /* HSA */ + dsi_write_reg(dsidev, DSI_VM_TIMING1, r); + + r = dsi_read_reg(dsidev, DSI_VM_TIMING2); + r = FLD_MOD(r, vbp, 7, 0); /* VBP */ + r = FLD_MOD(r, vfp, 15, 8); /* VFP */ + r = FLD_MOD(r, vsa, 23, 16); /* VSA */ + r = FLD_MOD(r, window_sync, 27, 24); /* WINDOW_SYNC */ + dsi_write_reg(dsidev, DSI_VM_TIMING2, r); + + r = dsi_read_reg(dsidev, DSI_VM_TIMING3); + r = FLD_MOD(r, timings->y_res, 14, 0); /* VACT */ + r = FLD_MOD(r, tl, 31, 16); /* TL */ + dsi_write_reg(dsidev, DSI_VM_TIMING3, r); + } +} + +int dsi_video_mode_enable(struct omap_dss_device *dssdev, int channel) +{ + struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev); + int bpp = dsi_get_pixel_size(dssdev->panel.dsi_pix_fmt); + u8 data_type; + u16 word_count; + + switch (dssdev->panel.dsi_pix_fmt) { + case OMAP_DSS_DSI_FMT_RGB888: + data_type = MIPI_DSI_PACKED_PIXEL_STREAM_24; + break; + case OMAP_DSS_DSI_FMT_RGB666: + data_type = MIPI_DSI_PIXEL_STREAM_3BYTE_18; + break; + case OMAP_DSS_DSI_FMT_RGB666_PACKED: + data_type = MIPI_DSI_PACKED_PIXEL_STREAM_18; + break; + case OMAP_DSS_DSI_FMT_RGB565: + data_type = MIPI_DSI_PACKED_PIXEL_STREAM_16; + break; + default: + BUG(); + }; + + dsi_if_enable(dsidev, false); + dsi_vc_enable(dsidev, channel, false); + + /* MODE, 1 = video mode */ + REG_FLD_MOD(dsidev, DSI_VC_CTRL(channel), 1, 4, 4); + + word_count = DIV_ROUND_UP(dssdev->panel.timings.x_res * bpp, 8); + + dsi_vc_write_long_header(dsidev, channel, data_type, word_count, 0); + + dsi_vc_enable(dsidev, channel, true); + dsi_if_enable(dsidev, true); + + dssdev->manager->enable(dssdev->manager); + + return 0; } +EXPORT_SYMBOL(dsi_video_mode_enable); + +void dsi_video_mode_disable(struct omap_dss_device *dssdev, int channel) +{ + struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev); + + dsi_if_enable(dsidev, false); + dsi_vc_enable(dsidev, channel, false); + + /* MODE, 0 = command mode */ + REG_FLD_MOD(dsidev, DSI_VC_CTRL(channel), 0, 4, 4); + + dsi_vc_enable(dsidev, channel, true); + dsi_if_enable(dsidev, true); + + dssdev->manager->disable(dssdev->manager); +} +EXPORT_SYMBOL(dsi_video_mode_disable); static void dsi_update_screen_dispc(struct omap_dss_device *dssdev, u16 x, u16 y, u16 w, u16 h) @@ -4019,28 +4215,9 @@ EXPORT_SYMBOL(omap_dsi_update); static int dsi_display_init_dispc(struct omap_dss_device *dssdev) { int r; - u32 irq; - - irq = dssdev->manager->id == OMAP_DSS_CHANNEL_LCD ? - DISPC_IRQ_FRAMEDONE : DISPC_IRQ_FRAMEDONE2; - - r = omap_dispc_register_isr(dsi_framedone_irq_callback, (void *) dssdev, - irq); - if (r) { - DSSERR("can't get FRAMEDONE irq\n"); - return r; - } - - dispc_mgr_set_lcd_display_type(dssdev->manager->id, - OMAP_DSS_LCD_DISPLAY_TFT); - - dispc_mgr_enable_stallmode(dssdev->manager->id, true); - dispc_mgr_enable_fifohandcheck(dssdev->manager->id, 1); - - dispc_mgr_set_tft_data_lines(dssdev->manager->id, - dsi_get_pixel_size(dssdev->panel.dsi_pix_fmt)); - { + if (dssdev->panel.dsi_mode == OMAP_DSS_DSI_CMD_MODE) { + u32 irq; struct omap_video_timings timings = { .hsw = 1, .hfp = 1, @@ -4050,21 +4227,46 @@ static int dsi_display_init_dispc(struct omap_dss_device *dssdev) .vbp = 0, }; + irq = dssdev->manager->id == OMAP_DSS_CHANNEL_LCD ? + DISPC_IRQ_FRAMEDONE : DISPC_IRQ_FRAMEDONE2; + + r = omap_dispc_register_isr(dsi_framedone_irq_callback, + (void *) dssdev, irq); + if (r) { + DSSERR("can't get FRAMEDONE irq\n"); + return r; + } + + dispc_mgr_enable_stallmode(dssdev->manager->id, true); + dispc_mgr_enable_fifohandcheck(dssdev->manager->id, 1); + dispc_mgr_set_lcd_timings(dssdev->manager->id, &timings); + } else { + dispc_mgr_enable_stallmode(dssdev->manager->id, false); + dispc_mgr_enable_fifohandcheck(dssdev->manager->id, 0); + + dispc_mgr_set_lcd_timings(dssdev->manager->id, + &dssdev->panel.timings); } + dispc_mgr_set_lcd_display_type(dssdev->manager->id, + OMAP_DSS_LCD_DISPLAY_TFT); + dispc_mgr_set_tft_data_lines(dssdev->manager->id, + dsi_get_pixel_size(dssdev->panel.dsi_pix_fmt)); return 0; } static void dsi_display_uninit_dispc(struct omap_dss_device *dssdev) { - u32 irq; + if (dssdev->panel.dsi_mode == OMAP_DSS_DSI_CMD_MODE) { + u32 irq; - irq = dssdev->manager->id == OMAP_DSS_CHANNEL_LCD ? - DISPC_IRQ_FRAMEDONE : DISPC_IRQ_FRAMEDONE2; + irq = dssdev->manager->id == OMAP_DSS_CHANNEL_LCD ? + DISPC_IRQ_FRAMEDONE : DISPC_IRQ_FRAMEDONE2; - omap_dispc_unregister_isr(dsi_framedone_irq_callback, (void *) dssdev, - irq); + omap_dispc_unregister_isr(dsi_framedone_irq_callback, + (void *) dssdev, irq); + } } static int dsi_configure_dsi_clocks(struct omap_dss_device *dssdev) |