From a0d269ec0bfab89f7b025bf6e1e596e9a6f9d999 Mon Sep 17 00:00:00 2001 From: Tomi Valkeinen Date: Tue, 27 Nov 2012 17:05:54 +0200 Subject: OMAPDSS: DSI: remove DSI & DISPC clk divisors from dssdev struct omap_dss_device contains DSS clock divisors. The idea is that the board file can pass precalculated divisors to the display driver. However, these divsors are no longer needed, as the omapdss driver can calculate the divisors during runtime. This patch removes the divisors from omap_dss_device, and their uses from the dsi driver. Signed-off-by: Tomi Valkeinen Reviewed-by: Archit Taneja --- drivers/video/omap2/dss/dsi.c | 47 ++++++++++++++++++++++++------------------- 1 file changed, 26 insertions(+), 21 deletions(-) (limited to 'drivers/video/omap2/dss/dsi.c') diff --git a/drivers/video/omap2/dss/dsi.c b/drivers/video/omap2/dss/dsi.c index 28d41d16b7be..9eb78455b7df 100644 --- a/drivers/video/omap2/dss/dsi.c +++ b/drivers/video/omap2/dss/dsi.c @@ -261,6 +261,13 @@ struct dsi_data { struct clk *dss_clk; struct clk *sys_clk; + struct dispc_clock_info user_dispc_cinfo; + struct dsi_clock_info user_dsi_cinfo; + + enum omap_dss_clk_source user_dispc_fclk_src; + enum omap_dss_clk_source user_lcd_clk_src; + enum omap_dss_clk_source user_dsi_fclk_src; + struct dsi_clock_info current_cinfo; bool vdds_dsi_enabled; @@ -1200,7 +1207,7 @@ static int dsi_set_lp_clk_divisor(struct omap_dss_device *dssdev) unsigned lp_clk_div; unsigned long lp_clk; - lp_clk_div = dssdev->clocks.dsi.lp_clk_div; + lp_clk_div = dsi->user_dsi_cinfo.lp_clk_div; if (lp_clk_div == 0 || lp_clk_div > dsi->lpdiv_max) return -EINVAL; @@ -3910,7 +3917,7 @@ static void dsi_config_cmd_mode_interleaving(struct omap_dss_device *dssdev) struct omap_video_timings *timings = &dsi->timings; int bpp = dsi_get_pixel_size(dsi->pix_fmt); int ndl = dsi->num_lanes_used - 1; - int dsi_fclk_hsdiv = dssdev->clocks.dsi.regm_dsi + 1; + int dsi_fclk_hsdiv = dsi->user_dsi_cinfo.regm_dsi + 1; int hsa_interleave_hs = 0, hsa_interleave_lp = 0; int hfp_interleave_hs = 0, hfp_interleave_lp = 0; int hbp_interleave_hs = 0, hbp_interleave_lp = 0; @@ -4302,24 +4309,24 @@ int omapdss_dsi_set_clocks(struct omap_dss_device *dssdev, dsi_fclk = cinfo.dsi_pll_hsdiv_dsi_clk; lp_clk_div = DIV_ROUND_UP(dsi_fclk, lp_clk * 2); - dssdev->clocks.dsi.regn = cinfo.regn; - dssdev->clocks.dsi.regm = cinfo.regm; - dssdev->clocks.dsi.regm_dispc = cinfo.regm_dispc; - dssdev->clocks.dsi.regm_dsi = cinfo.regm_dsi; + dsi->user_dsi_cinfo.regn = cinfo.regn; + dsi->user_dsi_cinfo.regm = cinfo.regm; + dsi->user_dsi_cinfo.regm_dispc = cinfo.regm_dispc; + dsi->user_dsi_cinfo.regm_dsi = cinfo.regm_dsi; - dssdev->clocks.dsi.lp_clk_div = lp_clk_div; + dsi->user_dsi_cinfo.lp_clk_div = lp_clk_div; - dssdev->clocks.dispc.channel.lck_div = dispc_cinfo.lck_div; - dssdev->clocks.dispc.channel.pck_div = dispc_cinfo.pck_div; + dsi->user_dispc_cinfo.lck_div = dispc_cinfo.lck_div; + dsi->user_dispc_cinfo.pck_div = dispc_cinfo.pck_div; - dssdev->clocks.dispc.dispc_fclk_src = OMAP_DSS_CLK_SRC_FCK; + dsi->user_dispc_fclk_src = OMAP_DSS_CLK_SRC_FCK; - dssdev->clocks.dispc.channel.lcd_clk_src = + dsi->user_lcd_clk_src = dsi->module_id == 0 ? OMAP_DSS_CLK_SRC_DSI_PLL_HSDIV_DISPC : OMAP_DSS_CLK_SRC_DSI2_PLL_HSDIV_DISPC; - dssdev->clocks.dsi.dsi_fclk_src = + dsi->user_dsi_fclk_src = dsi->module_id == 0 ? OMAP_DSS_CLK_SRC_DSI_PLL_HSDIV_DSI : OMAP_DSS_CLK_SRC_DSI2_PLL_HSDIV_DSI; @@ -4589,8 +4596,8 @@ static int dsi_configure_dispc_clocks(struct omap_dss_device *dssdev) fck = dsi_get_pll_hsdiv_dispc_rate(dsidev); - dispc_cinfo.lck_div = dssdev->clocks.dispc.channel.lck_div; - dispc_cinfo.pck_div = dssdev->clocks.dispc.channel.pck_div; + dispc_cinfo.lck_div = dsi->user_dispc_cinfo.lck_div; + dispc_cinfo.pck_div = dsi->user_dispc_cinfo.pck_div; r = dispc_calc_clock_rates(fck, &dispc_cinfo); if (r) { @@ -4679,13 +4686,12 @@ static void dsi_display_uninit_dispc(struct omap_dss_device *dssdev) static int dsi_configure_dsi_clocks(struct omap_dss_device *dssdev) { struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev); + struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); struct dsi_clock_info cinfo; int r; - cinfo.regn = dssdev->clocks.dsi.regn; - cinfo.regm = dssdev->clocks.dsi.regm; - cinfo.regm_dispc = dssdev->clocks.dsi.regm_dispc; - cinfo.regm_dsi = dssdev->clocks.dsi.regm_dsi; + cinfo = dsi->user_dsi_cinfo; + r = dsi_calc_clock_rates(dsidev, &cinfo); if (r) { DSSERR("Failed to calc dsi clocks\n"); @@ -4716,9 +4722,8 @@ static int dsi_display_init_dsi(struct omap_dss_device *dssdev) if (r) goto err1; - dss_select_dsi_clk_source(dsi->module_id, dssdev->clocks.dsi.dsi_fclk_src); - dss_select_lcd_clk_source(mgr->id, - dssdev->clocks.dispc.channel.lcd_clk_src); + dss_select_dsi_clk_source(dsi->module_id, dsi->user_dsi_fclk_src); + dss_select_lcd_clk_source(mgr->id, dsi->user_lcd_clk_src); DSSDBG("PLL OK\n"); -- cgit v1.2.3 From 5761217abf1636b6a0979548286e15200f17c010 Mon Sep 17 00:00:00 2001 From: Tomi Valkeinen Date: Tue, 27 Nov 2012 17:32:36 +0200 Subject: OMAPDSS: DSI: remove omap_dss_device uses The role of struct omap_dss_device will change in the future. The exact details of that are still a bit unclear. However, the less uses of omap_dss_device we have, the easier the change is in the future. This patch removes uses of omap_dss_device from dsi.c, where it can be done easily. Mostly this means passing dsi platform device to functions, instead of the omap_dss_device. Signed-off-by: Tomi Valkeinen Reviewed-by: Archit Taneja --- drivers/video/omap2/dss/dsi.c | 68 ++++++++++++++++++------------------------- 1 file changed, 29 insertions(+), 39 deletions(-) (limited to 'drivers/video/omap2/dss/dsi.c') diff --git a/drivers/video/omap2/dss/dsi.c b/drivers/video/omap2/dss/dsi.c index 9eb78455b7df..815c93047151 100644 --- a/drivers/video/omap2/dss/dsi.c +++ b/drivers/video/omap2/dss/dsi.c @@ -1199,9 +1199,8 @@ static unsigned long dsi_fclk_rate(struct platform_device *dsidev) return r; } -static int dsi_set_lp_clk_divisor(struct omap_dss_device *dssdev) +static int dsi_set_lp_clk_divisor(struct platform_device *dsidev) { - struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev); struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); unsigned long dsi_fclk; unsigned lp_clk_div; @@ -3904,9 +3903,8 @@ static int dsi_compute_interleave_lp(int blank, int enter_hs, int exit_hs, return max(lp_inter, 0); } -static void dsi_config_cmd_mode_interleaving(struct omap_dss_device *dssdev) +static void dsi_config_cmd_mode_interleaving(struct platform_device *dsidev) { - struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev); struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); int blanking_mode; int hfp_blanking_mode, hbp_blanking_mode, hsa_blanking_mode; @@ -4022,9 +4020,8 @@ static void dsi_config_cmd_mode_interleaving(struct omap_dss_device *dssdev) dsi_write_reg(dsidev, DSI_VM_TIMING6, r); } -static int dsi_proto_config(struct omap_dss_device *dssdev) +static int dsi_proto_config(struct platform_device *dsidev) { - struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev); struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); u32 r; int buswidth = 0; @@ -4082,7 +4079,7 @@ static int dsi_proto_config(struct omap_dss_device *dssdev) if (dsi->mode == OMAP_DSS_DSI_VIDEO_MODE) { dsi_config_vp_sync_events(dsidev); dsi_config_blanking_modes(dsidev); - dsi_config_cmd_mode_interleaving(dssdev); + dsi_config_cmd_mode_interleaving(dsidev); } dsi_vc_initial_config(dsidev, 0); @@ -4343,7 +4340,7 @@ int dsi_enable_video_output(struct omap_dss_device *dssdev, int channel) { struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev); struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); - struct omap_overlay_manager *mgr = dssdev->output->manager; + struct omap_overlay_manager *mgr = dsi->output.manager; int bpp = dsi_get_pixel_size(dsi->pix_fmt); u8 data_type; u16 word_count; @@ -4401,7 +4398,7 @@ void dsi_disable_video_output(struct omap_dss_device *dssdev, int channel) { struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev); struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); - struct omap_overlay_manager *mgr = dssdev->output->manager; + struct omap_overlay_manager *mgr = dsi->output.manager; if (dsi->mode == OMAP_DSS_DSI_VIDEO_MODE) { dsi_if_enable(dsidev, false); @@ -4418,11 +4415,10 @@ void dsi_disable_video_output(struct omap_dss_device *dssdev, int channel) } EXPORT_SYMBOL(dsi_disable_video_output); -static void dsi_update_screen_dispc(struct omap_dss_device *dssdev) +static void dsi_update_screen_dispc(struct platform_device *dsidev) { - struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev); struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); - struct omap_overlay_manager *mgr = dssdev->output->manager; + struct omap_overlay_manager *mgr = dsi->output.manager; unsigned bytespp; unsigned bytespl; unsigned bytespf; @@ -4578,7 +4574,7 @@ int omap_dsi_update(struct omap_dss_device *dssdev, int channel, dsi->update_bytes = dw * dh * dsi_get_pixel_size(dsi->pix_fmt) / 8; #endif - dsi_update_screen_dispc(dssdev); + dsi_update_screen_dispc(dsidev); return 0; } @@ -4586,9 +4582,8 @@ EXPORT_SYMBOL(omap_dsi_update); /* Display funcs */ -static int dsi_configure_dispc_clocks(struct omap_dss_device *dssdev) +static int dsi_configure_dispc_clocks(struct platform_device *dsidev) { - struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev); struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); struct dispc_clock_info dispc_cinfo; int r; @@ -4610,11 +4605,10 @@ static int dsi_configure_dispc_clocks(struct omap_dss_device *dssdev) return 0; } -static int dsi_display_init_dispc(struct omap_dss_device *dssdev) +static int dsi_display_init_dispc(struct platform_device *dsidev) { - struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev); struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); - struct omap_overlay_manager *mgr = dssdev->output->manager; + struct omap_overlay_manager *mgr = dsi->output.manager; int r; if (dsi->mode == OMAP_DSS_DSI_CMD_MODE) { @@ -4652,7 +4646,7 @@ static int dsi_display_init_dispc(struct omap_dss_device *dssdev) dss_mgr_set_timings(mgr, &dsi->timings); - r = dsi_configure_dispc_clocks(dssdev); + r = dsi_configure_dispc_clocks(dsidev); if (r) goto err1; @@ -4672,20 +4666,18 @@ err: return r; } -static void dsi_display_uninit_dispc(struct omap_dss_device *dssdev) +static void dsi_display_uninit_dispc(struct platform_device *dsidev) { - struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev); struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); - struct omap_overlay_manager *mgr = dssdev->output->manager; + struct omap_overlay_manager *mgr = dsi->output.manager; if (dsi->mode == OMAP_DSS_DSI_CMD_MODE) dss_mgr_unregister_framedone_handler(mgr, dsi_framedone_irq_callback, dsidev); } -static int dsi_configure_dsi_clocks(struct omap_dss_device *dssdev) +static int dsi_configure_dsi_clocks(struct platform_device *dsidev) { - struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev); struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); struct dsi_clock_info cinfo; int r; @@ -4707,18 +4699,17 @@ static int dsi_configure_dsi_clocks(struct omap_dss_device *dssdev) return 0; } -static int dsi_display_init_dsi(struct omap_dss_device *dssdev) +static int dsi_display_init_dsi(struct platform_device *dsidev) { - struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev); struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); - struct omap_overlay_manager *mgr = dssdev->output->manager; + struct omap_overlay_manager *mgr = dsi->output.manager; int r; r = dsi_pll_init(dsidev, true, true); if (r) goto err0; - r = dsi_configure_dsi_clocks(dssdev); + r = dsi_configure_dsi_clocks(dsidev); if (r) goto err1; @@ -4734,12 +4725,12 @@ static int dsi_display_init_dsi(struct omap_dss_device *dssdev) _dsi_print_reset_status(dsidev); dsi_proto_timings(dsidev); - dsi_set_lp_clk_divisor(dssdev); + dsi_set_lp_clk_divisor(dsidev); if (1) _dsi_print_reset_status(dsidev); - r = dsi_proto_config(dssdev); + r = dsi_proto_config(dsidev); if (r) goto err3; @@ -4764,12 +4755,11 @@ err0: return r; } -static void dsi_display_uninit_dsi(struct omap_dss_device *dssdev, +static void dsi_display_uninit_dsi(struct platform_device *dsidev, bool disconnect_lanes, bool enter_ulps) { - struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev); struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); - struct omap_overlay_manager *mgr = dssdev->output->manager; + struct omap_overlay_manager *mgr = dsi->output.manager; if (enter_ulps && !dsi->ulps_enabled) dsi_enter_ulps(dsidev); @@ -4791,7 +4781,7 @@ int omapdss_dsi_display_enable(struct omap_dss_device *dssdev) { struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev); struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); - struct omap_dss_output *out = dssdev->output; + struct omap_dss_output *out = &dsi->output; int r = 0; DSSDBG("dsi_display_enable\n"); @@ -4820,11 +4810,11 @@ int omapdss_dsi_display_enable(struct omap_dss_device *dssdev) _dsi_initialize_irq(dsidev); - r = dsi_display_init_dispc(dssdev); + r = dsi_display_init_dispc(dsidev); if (r) goto err_init_dispc; - r = dsi_display_init_dsi(dssdev); + r = dsi_display_init_dsi(dsidev); if (r) goto err_init_dsi; @@ -4833,7 +4823,7 @@ int omapdss_dsi_display_enable(struct omap_dss_device *dssdev) return 0; err_init_dsi: - dsi_display_uninit_dispc(dssdev); + dsi_display_uninit_dispc(dsidev); err_init_dispc: dsi_enable_pll_clock(dsidev, 0); dsi_runtime_put(dsidev); @@ -4863,9 +4853,9 @@ void omapdss_dsi_display_disable(struct omap_dss_device *dssdev, dsi_sync_vc(dsidev, 2); dsi_sync_vc(dsidev, 3); - dsi_display_uninit_dispc(dssdev); + dsi_display_uninit_dispc(dsidev); - dsi_display_uninit_dsi(dssdev, disconnect_lanes, enter_ulps); + dsi_display_uninit_dsi(dsidev, disconnect_lanes, enter_ulps); dsi_runtime_put(dsidev); dsi_enable_pll_clock(dsidev, 0); -- cgit v1.2.3 From 7286a08fb5607dbcf1a47639609d53d76b60e957 Mon Sep 17 00:00:00 2001 From: Tomi Valkeinen Date: Mon, 18 Feb 2013 13:06:01 +0200 Subject: OMAPDSS: add output->name Add name field to omapdss's outputs so that in the following patches panels refer to the output by their name. The name also helps debugging. Signed-off-by: Tomi Valkeinen Reviewed-by: Archit Taneja --- drivers/video/omap2/dss/dpi.c | 1 + drivers/video/omap2/dss/dsi.c | 1 + drivers/video/omap2/dss/hdmi.c | 1 + drivers/video/omap2/dss/rfbi.c | 1 + drivers/video/omap2/dss/sdi.c | 1 + drivers/video/omap2/dss/venc.c | 1 + include/video/omapdss.h | 2 ++ 7 files changed, 8 insertions(+) (limited to 'drivers/video/omap2/dss/dsi.c') diff --git a/drivers/video/omap2/dss/dpi.c b/drivers/video/omap2/dss/dpi.c index cb6b280124f1..e393b6ab60db 100644 --- a/drivers/video/omap2/dss/dpi.c +++ b/drivers/video/omap2/dss/dpi.c @@ -512,6 +512,7 @@ static void __init dpi_init_output(struct platform_device *pdev) out->pdev = pdev; out->id = OMAP_DSS_OUTPUT_DPI; out->type = OMAP_DISPLAY_TYPE_DPI; + out->name = "dpi.0"; dss_register_output(out); } diff --git a/drivers/video/omap2/dss/dsi.c b/drivers/video/omap2/dss/dsi.c index 815c93047151..294c83299cea 100644 --- a/drivers/video/omap2/dss/dsi.c +++ b/drivers/video/omap2/dss/dsi.c @@ -5183,6 +5183,7 @@ static void __init dsi_init_output(struct platform_device *dsidev) OMAP_DSS_OUTPUT_DSI1 : OMAP_DSS_OUTPUT_DSI2; out->type = OMAP_DISPLAY_TYPE_DSI; + out->name = dsi->module_id == 0 ? "dsi.0" : "dsi.1"; dss_register_output(out); } diff --git a/drivers/video/omap2/dss/hdmi.c b/drivers/video/omap2/dss/hdmi.c index 04edf325429b..9cbca03eff43 100644 --- a/drivers/video/omap2/dss/hdmi.c +++ b/drivers/video/omap2/dss/hdmi.c @@ -1046,6 +1046,7 @@ static void __init hdmi_init_output(struct platform_device *pdev) out->pdev = pdev; out->id = OMAP_DSS_OUTPUT_HDMI; out->type = OMAP_DISPLAY_TYPE_HDMI; + out->name = "hdmi.0"; dss_register_output(out); } diff --git a/drivers/video/omap2/dss/rfbi.c b/drivers/video/omap2/dss/rfbi.c index e903dd3f54d9..d9d7f3511a7b 100644 --- a/drivers/video/omap2/dss/rfbi.c +++ b/drivers/video/omap2/dss/rfbi.c @@ -1025,6 +1025,7 @@ static void __init rfbi_init_output(struct platform_device *pdev) out->pdev = pdev; out->id = OMAP_DSS_OUTPUT_DBI; out->type = OMAP_DISPLAY_TYPE_DBI; + out->name = "rfbi.0"; dss_register_output(out); } diff --git a/drivers/video/omap2/dss/sdi.c b/drivers/video/omap2/dss/sdi.c index 62b5374ce438..c27b58ad8e4d 100644 --- a/drivers/video/omap2/dss/sdi.c +++ b/drivers/video/omap2/dss/sdi.c @@ -278,6 +278,7 @@ static void __init sdi_init_output(struct platform_device *pdev) out->pdev = pdev; out->id = OMAP_DSS_OUTPUT_SDI; out->type = OMAP_DISPLAY_TYPE_SDI; + out->name = "sdi.0"; dss_register_output(out); } diff --git a/drivers/video/omap2/dss/venc.c b/drivers/video/omap2/dss/venc.c index 006caf3cb509..4c07a25d3d9b 100644 --- a/drivers/video/omap2/dss/venc.c +++ b/drivers/video/omap2/dss/venc.c @@ -819,6 +819,7 @@ static void __init venc_init_output(struct platform_device *pdev) out->pdev = pdev; out->id = OMAP_DSS_OUTPUT_VENC; out->type = OMAP_DISPLAY_TYPE_VENC; + out->name = "venc.0"; dss_register_output(out); } diff --git a/include/video/omapdss.h b/include/video/omapdss.h index 2cb2b0e812af..fa800b7ef832 100644 --- a/include/video/omapdss.h +++ b/include/video/omapdss.h @@ -541,6 +541,8 @@ struct omap_dss_writeback_info { struct omap_dss_output { struct list_head list; + const char *name; + /* display type supported by the output */ enum omap_display_type type; -- cgit v1.2.3 From 2eea5ae6c102a5088e39733115ff7762a4674887 Mon Sep 17 00:00:00 2001 From: Tomi Valkeinen Date: Wed, 13 Feb 2013 11:23:54 +0200 Subject: OMAPDSS: add output->dispc_channel The DISPC channel used for each output is currently passed in panel platform data from the board files. To simplify this, and to make the panel drivers less dependent on OMAP, this patch changes omapdss to resolve the channel independently. The channel is resolved based on the OMAP version and, in case of DSI, the DSI module id. This resolved channel is stored into a new field in output, dispc_channel. The few places where dssdev->channel was used are changed to use output->recommended_channel. After this patch, dssdev->channel is obsolete. Signed-off-by: Tomi Valkeinen Reviewed-by: Archit Taneja --- drivers/video/omap2/dss/dpi.c | 38 ++++++++++++++++++++---- drivers/video/omap2/dss/dsi.c | 50 ++++++++++++++++++++++++++++++++ drivers/video/omap2/dss/hdmi.c | 3 +- drivers/video/omap2/dss/rfbi.c | 1 + drivers/video/omap2/dss/sdi.c | 1 + drivers/video/omap2/dss/venc.c | 3 +- drivers/video/omap2/omapfb/omapfb-main.c | 2 +- include/video/omapdss.h | 4 +++ 8 files changed, 91 insertions(+), 11 deletions(-) (limited to 'drivers/video/omap2/dss/dsi.c') diff --git a/drivers/video/omap2/dss/dpi.c b/drivers/video/omap2/dss/dpi.c index e393b6ab60db..ab6d8b0e94c7 100644 --- a/drivers/video/omap2/dss/dpi.c +++ b/drivers/video/omap2/dss/dpi.c @@ -396,6 +396,36 @@ static int __init dpi_verify_dsi_pll(struct platform_device *dsidev) return 0; } +/* + * Return a hardcoded channel for the DPI output. This should work for + * current use cases, but this can be later expanded to either resolve + * the channel in some more dynamic manner, or get the channel as a user + * parameter. + */ +static enum omap_channel dpi_get_channel(void) +{ + switch (omapdss_get_version()) { + case OMAPDSS_VER_OMAP24xx: + case OMAPDSS_VER_OMAP34xx_ES1: + case OMAPDSS_VER_OMAP34xx_ES3: + case OMAPDSS_VER_OMAP3630: + case OMAPDSS_VER_AM35xx: + return OMAP_DSS_CHANNEL_LCD; + + case OMAPDSS_VER_OMAP4430_ES1: + case OMAPDSS_VER_OMAP4430_ES2: + case OMAPDSS_VER_OMAP4: + return OMAP_DSS_CHANNEL_LCD2; + + case OMAPDSS_VER_OMAP5: + return OMAP_DSS_CHANNEL_LCD3; + + default: + DSSWARN("unsupported DSS version\n"); + return OMAP_DSS_CHANNEL_LCD; + } +} + static int __init dpi_init_display(struct omap_dss_device *dssdev) { struct platform_device *dsidev; @@ -416,12 +446,7 @@ static int __init dpi_init_display(struct omap_dss_device *dssdev) dpi.vdds_dsi_reg = vdds_dsi; } - /* - * XXX We shouldn't need dssdev->channel for this. The dsi pll clock - * source for DPI is SoC integration detail, not something that should - * be configured in the dssdev - */ - dsidev = dpi_get_dsidev(dssdev->channel); + dsidev = dpi_get_dsidev(dpi.output.dispc_channel); if (dsidev && dpi_verify_dsi_pll(dsidev)) { dsidev = NULL; @@ -513,6 +538,7 @@ static void __init dpi_init_output(struct platform_device *pdev) out->id = OMAP_DSS_OUTPUT_DPI; out->type = OMAP_DISPLAY_TYPE_DPI; out->name = "dpi.0"; + out->dispc_channel = dpi_get_channel(); dss_register_output(out); } diff --git a/drivers/video/omap2/dss/dsi.c b/drivers/video/omap2/dss/dsi.c index 294c83299cea..d13e77c01d7e 100644 --- a/drivers/video/omap2/dss/dsi.c +++ b/drivers/video/omap2/dss/dsi.c @@ -4946,6 +4946,55 @@ void omapdss_dsi_set_videomode_timings(struct omap_dss_device *dssdev, } EXPORT_SYMBOL(omapdss_dsi_set_videomode_timings); +/* + * Return a hardcoded channel for the DSI output. This should work for + * current use cases, but this can be later expanded to either resolve + * the channel in some more dynamic manner, or get the channel as a user + * parameter. + */ +static enum omap_channel dsi_get_channel(int module_id) +{ + switch (omapdss_get_version()) { + case OMAPDSS_VER_OMAP24xx: + DSSWARN("DSI not supported\n"); + return OMAP_DSS_CHANNEL_LCD; + + case OMAPDSS_VER_OMAP34xx_ES1: + case OMAPDSS_VER_OMAP34xx_ES3: + case OMAPDSS_VER_OMAP3630: + case OMAPDSS_VER_AM35xx: + return OMAP_DSS_CHANNEL_LCD; + + case OMAPDSS_VER_OMAP4430_ES1: + case OMAPDSS_VER_OMAP4430_ES2: + case OMAPDSS_VER_OMAP4: + switch (module_id) { + case 0: + return OMAP_DSS_CHANNEL_LCD; + case 1: + return OMAP_DSS_CHANNEL_LCD2; + default: + DSSWARN("unsupported module id\n"); + return OMAP_DSS_CHANNEL_LCD; + } + + case OMAPDSS_VER_OMAP5: + switch (module_id) { + case 0: + return OMAP_DSS_CHANNEL_LCD; + case 1: + return OMAP_DSS_CHANNEL_LCD3; + default: + DSSWARN("unsupported module id\n"); + return OMAP_DSS_CHANNEL_LCD; + } + + default: + DSSWARN("unsupported DSS version\n"); + return OMAP_DSS_CHANNEL_LCD; + } +} + static int __init dsi_init_display(struct omap_dss_device *dssdev) { struct platform_device *dsidev = @@ -5184,6 +5233,7 @@ static void __init dsi_init_output(struct platform_device *dsidev) out->type = OMAP_DISPLAY_TYPE_DSI; out->name = dsi->module_id == 0 ? "dsi.0" : "dsi.1"; + out->dispc_channel = dsi_get_channel(dsi->module_id); dss_register_output(out); } diff --git a/drivers/video/omap2/dss/hdmi.c b/drivers/video/omap2/dss/hdmi.c index 9cbca03eff43..a6f953898d94 100644 --- a/drivers/video/omap2/dss/hdmi.c +++ b/drivers/video/omap2/dss/hdmi.c @@ -1012,8 +1012,6 @@ static void __init hdmi_probe_pdata(struct platform_device *pdev) hdmi.ls_oe_gpio = priv->ls_oe_gpio; hdmi.hpd_gpio = priv->hpd_gpio; - dssdev->channel = OMAP_DSS_CHANNEL_DIGIT; - r = hdmi_init_display(dssdev); if (r) { DSSERR("device %s init failed: %d\n", dssdev->name, r); @@ -1047,6 +1045,7 @@ static void __init hdmi_init_output(struct platform_device *pdev) out->id = OMAP_DSS_OUTPUT_HDMI; out->type = OMAP_DISPLAY_TYPE_HDMI; out->name = "hdmi.0"; + out->dispc_channel = OMAP_DSS_CHANNEL_DIGIT; dss_register_output(out); } diff --git a/drivers/video/omap2/dss/rfbi.c b/drivers/video/omap2/dss/rfbi.c index d9d7f3511a7b..1a691bb27547 100644 --- a/drivers/video/omap2/dss/rfbi.c +++ b/drivers/video/omap2/dss/rfbi.c @@ -1026,6 +1026,7 @@ static void __init rfbi_init_output(struct platform_device *pdev) out->id = OMAP_DSS_OUTPUT_DBI; out->type = OMAP_DISPLAY_TYPE_DBI; out->name = "rfbi.0"; + out->dispc_channel = OMAP_DSS_CHANNEL_LCD; dss_register_output(out); } diff --git a/drivers/video/omap2/dss/sdi.c b/drivers/video/omap2/dss/sdi.c index c27b58ad8e4d..3888cfa0881c 100644 --- a/drivers/video/omap2/dss/sdi.c +++ b/drivers/video/omap2/dss/sdi.c @@ -279,6 +279,7 @@ static void __init sdi_init_output(struct platform_device *pdev) out->id = OMAP_DSS_OUTPUT_SDI; out->type = OMAP_DISPLAY_TYPE_SDI; out->name = "sdi.0"; + out->dispc_channel = OMAP_DSS_CHANNEL_LCD; dss_register_output(out); } diff --git a/drivers/video/omap2/dss/venc.c b/drivers/video/omap2/dss/venc.c index 4c07a25d3d9b..5cb983e2f170 100644 --- a/drivers/video/omap2/dss/venc.c +++ b/drivers/video/omap2/dss/venc.c @@ -786,8 +786,6 @@ static void __init venc_probe_pdata(struct platform_device *vencdev) dss_copy_device_pdata(dssdev, plat_dssdev); - dssdev->channel = OMAP_DSS_CHANNEL_DIGIT; - r = venc_init_display(dssdev); if (r) { DSSERR("device %s init failed: %d\n", dssdev->name, r); @@ -820,6 +818,7 @@ static void __init venc_init_output(struct platform_device *pdev) out->id = OMAP_DSS_OUTPUT_VENC; out->type = OMAP_DISPLAY_TYPE_VENC; out->name = "venc.0"; + out->dispc_channel = OMAP_DSS_CHANNEL_DIGIT; dss_register_output(out); } diff --git a/drivers/video/omap2/omapfb/omapfb-main.c b/drivers/video/omap2/omapfb/omapfb-main.c index ca585ef37f25..f38348ea3375 100644 --- a/drivers/video/omap2/omapfb/omapfb-main.c +++ b/drivers/video/omap2/omapfb/omapfb-main.c @@ -2388,7 +2388,7 @@ static int omapfb_init_connections(struct omapfb2_device *fbdev, struct omap_dss_device *dssdev = fbdev->displays[i].dssdev; struct omap_dss_output *out = dssdev->output; - mgr = omap_dss_get_overlay_manager(dssdev->channel); + mgr = omap_dss_get_overlay_manager(out->dispc_channel); if (!mgr || !out) continue; diff --git a/include/video/omapdss.h b/include/video/omapdss.h index fa800b7ef832..41fb434093e9 100644 --- a/include/video/omapdss.h +++ b/include/video/omapdss.h @@ -546,6 +546,9 @@ struct omap_dss_output { /* display type supported by the output */ enum omap_display_type type; + /* DISPC channel for this output */ + enum omap_channel dispc_channel; + /* output instance */ enum omap_dss_output_id id; @@ -563,6 +566,7 @@ struct omap_dss_device { enum omap_display_type type; + /* obsolete, to be removed */ enum omap_channel channel; union { -- cgit v1.2.3 From b7dec9b66f49304470291a95ea3855c9c9fe193b Mon Sep 17 00:00:00 2001 From: Tomi Valkeinen Date: Fri, 22 Feb 2013 12:58:35 +0200 Subject: OMAPDSS: DSI: delay dispc initialization We currently setup both DSI and DISPC related things when the DSI bus is enabled. There's no need for DISPC related thing at that point, though, but only later when the video output is enabled. To make it possible to use the DSI bus before DISPC overlay manager is selected, this patch moves DSI's DISPC initialization to dsi_enable_video_output(), from omapdss_dsi_display_enable(). We also move the selection of DISPC's LCD clock to dsi_enable_video_output. This way there are no DISPC dependencies until the video output is enabled. Signed-off-by: Tomi Valkeinen Reviewed-by: Archit Taneja --- drivers/video/omap2/dss/dsi.c | 75 +++++++++++++++++++++++-------------------- 1 file changed, 40 insertions(+), 35 deletions(-) (limited to 'drivers/video/omap2/dss/dsi.c') diff --git a/drivers/video/omap2/dss/dsi.c b/drivers/video/omap2/dss/dsi.c index d13e77c01d7e..c9f9d0faf8e3 100644 --- a/drivers/video/omap2/dss/dsi.c +++ b/drivers/video/omap2/dss/dsi.c @@ -200,6 +200,11 @@ struct dsi_reg { u16 idx; }; typedef void (*omap_dsi_isr_t) (void *arg, u32 mask); +static int dsi_display_init_dispc(struct platform_device *dsidev, + struct omap_overlay_manager *mgr); +static void dsi_display_uninit_dispc(struct platform_device *dsidev, + struct omap_overlay_manager *mgr); + #define DSI_MAX_NR_ISRS 2 #define DSI_MAX_NR_LANES 5 @@ -4342,10 +4347,20 @@ int dsi_enable_video_output(struct omap_dss_device *dssdev, int channel) struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); struct omap_overlay_manager *mgr = dsi->output.manager; int bpp = dsi_get_pixel_size(dsi->pix_fmt); + struct omap_dss_output *out = &dsi->output; u8 data_type; u16 word_count; int r; + if (out == NULL || out->manager == NULL) { + DSSERR("failed to enable display: no output/manager\n"); + return -ENODEV; + } + + r = dsi_display_init_dispc(dsidev, mgr); + if (r) + goto err_init_dispc; + if (dsi->mode == OMAP_DSS_DSI_VIDEO_MODE) { switch (dsi->pix_fmt) { case OMAP_DSS_DSI_FMT_RGB888: @@ -4361,8 +4376,8 @@ int dsi_enable_video_output(struct omap_dss_device *dssdev, int channel) data_type = MIPI_DSI_PACKED_PIXEL_STREAM_16; break; default: - BUG(); - return -EINVAL; + r = -EINVAL; + goto err_pix_fmt; }; dsi_if_enable(dsidev, false); @@ -4381,16 +4396,20 @@ int dsi_enable_video_output(struct omap_dss_device *dssdev, int channel) } r = dss_mgr_enable(mgr); - if (r) { - if (dsi->mode == OMAP_DSS_DSI_VIDEO_MODE) { - dsi_if_enable(dsidev, false); - dsi_vc_enable(dsidev, channel, false); - } - - return r; - } + if (r) + goto err_mgr_enable; return 0; + +err_mgr_enable: + if (dsi->mode == OMAP_DSS_DSI_VIDEO_MODE) { + dsi_if_enable(dsidev, false); + dsi_vc_enable(dsidev, channel, false); + } +err_pix_fmt: + dsi_display_uninit_dispc(dsidev, mgr); +err_init_dispc: + return r; } EXPORT_SYMBOL(dsi_enable_video_output); @@ -4412,6 +4431,8 @@ void dsi_disable_video_output(struct omap_dss_device *dssdev, int channel) } dss_mgr_disable(mgr); + + dsi_display_uninit_dispc(dsidev, mgr); } EXPORT_SYMBOL(dsi_disable_video_output); @@ -4605,12 +4626,14 @@ static int dsi_configure_dispc_clocks(struct platform_device *dsidev) return 0; } -static int dsi_display_init_dispc(struct platform_device *dsidev) +static int dsi_display_init_dispc(struct platform_device *dsidev, + struct omap_overlay_manager *mgr) { struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); - struct omap_overlay_manager *mgr = dsi->output.manager; int r; + dss_select_lcd_clk_source(mgr->id, dsi->user_lcd_clk_src); + if (dsi->mode == OMAP_DSS_DSI_CMD_MODE) { dsi->timings.hsw = 1; dsi->timings.hfp = 1; @@ -4663,17 +4686,20 @@ err1: dss_mgr_unregister_framedone_handler(mgr, dsi_framedone_irq_callback, dsidev); err: + dss_select_lcd_clk_source(mgr->id, OMAP_DSS_CLK_SRC_FCK); return r; } -static void dsi_display_uninit_dispc(struct platform_device *dsidev) +static void dsi_display_uninit_dispc(struct platform_device *dsidev, + struct omap_overlay_manager *mgr) { struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); - struct omap_overlay_manager *mgr = dsi->output.manager; if (dsi->mode == OMAP_DSS_DSI_CMD_MODE) dss_mgr_unregister_framedone_handler(mgr, dsi_framedone_irq_callback, dsidev); + + dss_select_lcd_clk_source(mgr->id, OMAP_DSS_CLK_SRC_FCK); } static int dsi_configure_dsi_clocks(struct platform_device *dsidev) @@ -4702,7 +4728,6 @@ static int dsi_configure_dsi_clocks(struct platform_device *dsidev) static int dsi_display_init_dsi(struct platform_device *dsidev) { struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); - struct omap_overlay_manager *mgr = dsi->output.manager; int r; r = dsi_pll_init(dsidev, true, true); @@ -4714,7 +4739,6 @@ static int dsi_display_init_dsi(struct platform_device *dsidev) goto err1; dss_select_dsi_clk_source(dsi->module_id, dsi->user_dsi_fclk_src); - dss_select_lcd_clk_source(mgr->id, dsi->user_lcd_clk_src); DSSDBG("PLL OK\n"); @@ -4747,8 +4771,6 @@ err3: dsi_cio_uninit(dsidev); err2: dss_select_dsi_clk_source(dsi->module_id, OMAP_DSS_CLK_SRC_FCK); - dss_select_lcd_clk_source(mgr->id, OMAP_DSS_CLK_SRC_FCK); - err1: dsi_pll_uninit(dsidev, true); err0: @@ -4759,7 +4781,6 @@ static void dsi_display_uninit_dsi(struct platform_device *dsidev, bool disconnect_lanes, bool enter_ulps) { struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); - struct omap_overlay_manager *mgr = dsi->output.manager; if (enter_ulps && !dsi->ulps_enabled) dsi_enter_ulps(dsidev); @@ -4772,7 +4793,6 @@ static void dsi_display_uninit_dsi(struct platform_device *dsidev, dsi_vc_enable(dsidev, 3, 0); dss_select_dsi_clk_source(dsi->module_id, OMAP_DSS_CLK_SRC_FCK); - dss_select_lcd_clk_source(mgr->id, OMAP_DSS_CLK_SRC_FCK); dsi_cio_uninit(dsidev); dsi_pll_uninit(dsidev, disconnect_lanes); } @@ -4781,7 +4801,6 @@ int omapdss_dsi_display_enable(struct omap_dss_device *dssdev) { struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev); struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); - struct omap_dss_output *out = &dsi->output; int r = 0; DSSDBG("dsi_display_enable\n"); @@ -4790,12 +4809,6 @@ int omapdss_dsi_display_enable(struct omap_dss_device *dssdev) mutex_lock(&dsi->lock); - if (out == NULL || out->manager == NULL) { - DSSERR("failed to enable display: no output/manager\n"); - r = -ENODEV; - goto err_start_dev; - } - r = omap_dss_start_device(dssdev); if (r) { DSSERR("failed to start device\n"); @@ -4810,10 +4823,6 @@ int omapdss_dsi_display_enable(struct omap_dss_device *dssdev) _dsi_initialize_irq(dsidev); - r = dsi_display_init_dispc(dsidev); - if (r) - goto err_init_dispc; - r = dsi_display_init_dsi(dsidev); if (r) goto err_init_dsi; @@ -4823,8 +4832,6 @@ int omapdss_dsi_display_enable(struct omap_dss_device *dssdev) return 0; err_init_dsi: - dsi_display_uninit_dispc(dsidev); -err_init_dispc: dsi_enable_pll_clock(dsidev, 0); dsi_runtime_put(dsidev); err_get_dsi: @@ -4853,8 +4860,6 @@ void omapdss_dsi_display_disable(struct omap_dss_device *dssdev, dsi_sync_vc(dsidev, 2); dsi_sync_vc(dsidev, 3); - dsi_display_uninit_dispc(dsidev); - dsi_display_uninit_dsi(dsidev, disconnect_lanes, enter_ulps); dsi_runtime_put(dsidev); -- cgit v1.2.3 From 2c1a3ea0dc48d6b5d580781578a40f9a9e4acef8 Mon Sep 17 00:00:00 2001 From: Tomi Valkeinen Date: Fri, 22 Feb 2013 13:42:59 +0200 Subject: OMAPDSS: DSI: fix DSI channel source initialization During the initialization of the DSI protocol registers, we always set the sources of all DSI channels to L4. However, we don't update the value in the dsi_data, so we may end up with a different value in the register and in the dsi_data, leading to DSI problems. This patch fixes the issue by initializing also the channel source in the dsi_data. Signed-off-by: Tomi Valkeinen Reviewed-by: Archit Taneja --- drivers/video/omap2/dss/dsi.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'drivers/video/omap2/dss/dsi.c') diff --git a/drivers/video/omap2/dss/dsi.c b/drivers/video/omap2/dss/dsi.c index c9f9d0faf8e3..b0eed4323394 100644 --- a/drivers/video/omap2/dss/dsi.c +++ b/drivers/video/omap2/dss/dsi.c @@ -2794,6 +2794,7 @@ static int dsi_vc_enable(struct platform_device *dsidev, int channel, static void dsi_vc_initial_config(struct platform_device *dsidev, int channel) { + struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); u32 r; DSSDBG("Initial config of virtual channel %d", channel); @@ -2818,6 +2819,8 @@ static void dsi_vc_initial_config(struct platform_device *dsidev, int channel) r = FLD_MOD(r, 4, 23, 21); /* DMA_TX_REQ_NB = no dma */ dsi_write_reg(dsidev, DSI_VC_CTRL(channel), r); + + dsi->vc[channel].source = DSI_VC_SOURCE_L4; } static int dsi_vc_config_source(struct platform_device *dsidev, int channel, -- cgit v1.2.3 From 17518189218cdf4c8136ce6f0284519b9a878a09 Mon Sep 17 00:00:00 2001 From: Tomi Valkeinen Date: Thu, 7 Mar 2013 11:21:45 +0200 Subject: OMAPDSS: DSI: fix wrong unsigned long long use dsi_configure_dispc_clocks() stores dsi func clock into unsigned long long, but it should really be just unsigned long. Fix this. Signed-off-by: Tomi Valkeinen --- drivers/video/omap2/dss/dsi.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/video/omap2/dss/dsi.c') diff --git a/drivers/video/omap2/dss/dsi.c b/drivers/video/omap2/dss/dsi.c index b0eed4323394..dd13bd9138fc 100644 --- a/drivers/video/omap2/dss/dsi.c +++ b/drivers/video/omap2/dss/dsi.c @@ -4611,7 +4611,7 @@ static int dsi_configure_dispc_clocks(struct platform_device *dsidev) struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); struct dispc_clock_info dispc_cinfo; int r; - unsigned long long fck; + unsigned long fck; fck = dsi_get_pll_hsdiv_dispc_rate(dsidev); -- cgit v1.2.3 From 777f05cc79892c1a5c25a72cfb3cc24554378a45 Mon Sep 17 00:00:00 2001 From: Tomi Valkeinen Date: Wed, 6 Mar 2013 11:10:29 +0200 Subject: OMAPDSS: DSI: simplify dsi configuration We have a bunch of dsi functions that are used to do the basic configuration for DSI. To simplify things, and to make sure we have all the necessary information, create a single dsi config function, which does the basic configuration. Signed-off-by: Tomi Valkeinen --- drivers/video/omap2/displays/panel-taal.c | 16 ++++--- drivers/video/omap2/dss/dsi.c | 74 +++++-------------------------- include/video/omapdss.h | 23 +++++----- 3 files changed, 31 insertions(+), 82 deletions(-) (limited to 'drivers/video/omap2/dss/dsi.c') diff --git a/drivers/video/omap2/displays/panel-taal.c b/drivers/video/omap2/displays/panel-taal.c index bc4c95ee41cc..eb86cbae8c2a 100644 --- a/drivers/video/omap2/displays/panel-taal.c +++ b/drivers/video/omap2/displays/panel-taal.c @@ -919,6 +919,13 @@ static int taal_power_on(struct omap_dss_device *dssdev) struct taal_data *td = dev_get_drvdata(&dssdev->dev); u8 id1, id2, id3; int r; + struct omap_dss_dsi_config dsi_config = { + .mode = OMAP_DSS_DSI_CMD_MODE, + .pixel_format = OMAP_DSS_DSI_FMT_RGB888, + .timings = &dssdev->panel.timings, + .hs_clk = 216000000, + .lp_clk = 10000000, + }; r = omapdss_dsi_configure_pins(dssdev, &td->pin_config); if (r) { @@ -926,14 +933,9 @@ static int taal_power_on(struct omap_dss_device *dssdev) goto err0; }; - omapdss_dsi_set_size(dssdev, dssdev->panel.timings.x_res, - dssdev->panel.timings.y_res); - omapdss_dsi_set_pixel_format(dssdev, OMAP_DSS_DSI_FMT_RGB888); - omapdss_dsi_set_operation_mode(dssdev, OMAP_DSS_DSI_CMD_MODE); - - r = omapdss_dsi_set_clocks(dssdev, 216000000, 10000000); + r = omapdss_dsi_set_config(dssdev, &dsi_config); if (r) { - dev_err(&dssdev->dev, "failed to set HS and LP clocks\n"); + dev_err(&dssdev->dev, "failed to configure DSI\n"); goto err0; } diff --git a/drivers/video/omap2/dss/dsi.c b/drivers/video/omap2/dss/dsi.c index dd13bd9138fc..8cb43af60fe1 100644 --- a/drivers/video/omap2/dss/dsi.c +++ b/drivers/video/omap2/dss/dsi.c @@ -4278,7 +4278,7 @@ int omapdss_dsi_configure_pins(struct omap_dss_device *dssdev, } EXPORT_SYMBOL(omapdss_dsi_configure_pins); -int omapdss_dsi_set_clocks(struct omap_dss_device *dssdev, +static int dsi_set_clocks(struct omap_dss_device *dssdev, unsigned long ddr_clk, unsigned long lp_clk) { struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev); @@ -4293,8 +4293,6 @@ int omapdss_dsi_set_clocks(struct omap_dss_device *dssdev, DSSDBG("Setting DSI clocks: ddr_clk %lu, lp_clk %lu", ddr_clk, lp_clk); - mutex_lock(&dsi->lock); - /* Calculate PLL output clock */ r = dsi_pll_calc_ddrfreq(dsidev, ddr_clk * 4, &cinfo); if (r) @@ -4336,13 +4334,10 @@ int omapdss_dsi_set_clocks(struct omap_dss_device *dssdev, OMAP_DSS_CLK_SRC_DSI_PLL_HSDIV_DSI : OMAP_DSS_CLK_SRC_DSI2_PLL_HSDIV_DSI; - mutex_unlock(&dsi->lock); return 0; err: - mutex_unlock(&dsi->lock); return r; } -EXPORT_SYMBOL(omapdss_dsi_set_clocks); int dsi_enable_video_output(struct omap_dss_device *dssdev, int channel) { @@ -4884,75 +4879,26 @@ int omapdss_dsi_enable_te(struct omap_dss_device *dssdev, bool enable) } EXPORT_SYMBOL(omapdss_dsi_enable_te); -void omapdss_dsi_set_timings(struct omap_dss_device *dssdev, - struct omap_video_timings *timings) +int omapdss_dsi_set_config(struct omap_dss_device *dssdev, + const struct omap_dss_dsi_config *config) { struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev); struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); mutex_lock(&dsi->lock); - dsi->timings = *timings; - - mutex_unlock(&dsi->lock); -} -EXPORT_SYMBOL(omapdss_dsi_set_timings); - -void omapdss_dsi_set_size(struct omap_dss_device *dssdev, u16 w, u16 h) -{ - struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev); - struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); - - mutex_lock(&dsi->lock); + dsi->timings = *config->timings; + dsi->vm_timings = *config->vm_timings; + dsi->pix_fmt = config->pixel_format; + dsi->mode = config->mode; - dsi->timings.x_res = w; - dsi->timings.y_res = h; + dsi_set_clocks(dssdev, config->hs_clk, config->lp_clk); mutex_unlock(&dsi->lock); -} -EXPORT_SYMBOL(omapdss_dsi_set_size); -void omapdss_dsi_set_pixel_format(struct omap_dss_device *dssdev, - enum omap_dss_dsi_pixel_format fmt) -{ - struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev); - struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); - - mutex_lock(&dsi->lock); - - dsi->pix_fmt = fmt; - - mutex_unlock(&dsi->lock); -} -EXPORT_SYMBOL(omapdss_dsi_set_pixel_format); - -void omapdss_dsi_set_operation_mode(struct omap_dss_device *dssdev, - enum omap_dss_dsi_mode mode) -{ - struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev); - struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); - - mutex_lock(&dsi->lock); - - dsi->mode = mode; - - mutex_unlock(&dsi->lock); -} -EXPORT_SYMBOL(omapdss_dsi_set_operation_mode); - -void omapdss_dsi_set_videomode_timings(struct omap_dss_device *dssdev, - struct omap_dss_dsi_videomode_timings *timings) -{ - struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev); - struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); - - mutex_lock(&dsi->lock); - - dsi->vm_timings = *timings; - - mutex_unlock(&dsi->lock); + return 0; } -EXPORT_SYMBOL(omapdss_dsi_set_videomode_timings); +EXPORT_SYMBOL(omapdss_dsi_set_config); /* * Return a hardcoded channel for the DSI output. This should work for diff --git a/include/video/omapdss.h b/include/video/omapdss.h index 41fb434093e9..4dd4cea41bd4 100644 --- a/include/video/omapdss.h +++ b/include/video/omapdss.h @@ -282,6 +282,16 @@ struct omap_dss_dsi_videomode_timings { int window_sync; }; +struct omap_dss_dsi_config { + enum omap_dss_dsi_mode mode; + enum omap_dss_dsi_pixel_format pixel_format; + const struct omap_video_timings *timings; + const struct omap_dss_dsi_videomode_timings *vm_timings; + + unsigned long hs_clk; + unsigned long lp_clk; +}; + void dsi_bus_lock(struct omap_dss_device *dssdev); void dsi_bus_unlock(struct omap_dss_device *dssdev); int dsi_vc_dcs_write(struct omap_dss_device *dssdev, int channel, u8 *data, @@ -806,15 +816,8 @@ int dispc_ovl_setup(enum omap_plane plane, const struct omap_overlay_info *oi, void omapdss_dsi_vc_enable_hs(struct omap_dss_device *dssdev, int channel, bool enable); int omapdss_dsi_enable_te(struct omap_dss_device *dssdev, bool enable); -void omapdss_dsi_set_timings(struct omap_dss_device *dssdev, - struct omap_video_timings *timings); -void omapdss_dsi_set_size(struct omap_dss_device *dssdev, u16 w, u16 h); -void omapdss_dsi_set_pixel_format(struct omap_dss_device *dssdev, - enum omap_dss_dsi_pixel_format fmt); -void omapdss_dsi_set_operation_mode(struct omap_dss_device *dssdev, - enum omap_dss_dsi_mode mode); -void omapdss_dsi_set_videomode_timings(struct omap_dss_device *dssdev, - struct omap_dss_dsi_videomode_timings *timings); +int omapdss_dsi_set_config(struct omap_dss_device *dssdev, + const struct omap_dss_dsi_config *config); int omap_dsi_update(struct omap_dss_device *dssdev, int channel, void (*callback)(int, void *), void *data); @@ -823,8 +826,6 @@ int omap_dsi_set_vc_id(struct omap_dss_device *dssdev, int channel, int vc_id); void omap_dsi_release_vc(struct omap_dss_device *dssdev, int channel); int omapdss_dsi_configure_pins(struct omap_dss_device *dssdev, const struct omap_dsi_pin_config *pin_cfg); -int omapdss_dsi_set_clocks(struct omap_dss_device *dssdev, - unsigned long ddr_clk, unsigned long lp_clk); int omapdss_dsi_display_enable(struct omap_dss_device *dssdev); void omapdss_dsi_display_disable(struct omap_dss_device *dssdev, -- cgit v1.2.3 From 99322577e80da240cebc087da9ea328bb0960be1 Mon Sep 17 00:00:00 2001 From: Tomi Valkeinen Date: Tue, 5 Mar 2013 10:37:02 +0200 Subject: OMAPDSS: DSI: get line buffer size at probe To find out the DSI line buffer size we need to read HW registers. To make it possible to do DSI configuration calculations without HW powered up, store the line buffer size at DSI driver's probe. Signed-off-by: Tomi Valkeinen --- drivers/video/omap2/dss/dsi.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) (limited to 'drivers/video/omap2/dss/dsi.c') diff --git a/drivers/video/omap2/dss/dsi.c b/drivers/video/omap2/dss/dsi.c index 8cb43af60fe1..590da06e6a82 100644 --- a/drivers/video/omap2/dss/dsi.c +++ b/drivers/video/omap2/dss/dsi.c @@ -336,6 +336,7 @@ struct dsi_data { unsigned long lpdiv_max; unsigned num_lanes_supported; + unsigned line_buffer_size; struct dsi_lane_config lanes[DSI_MAX_NR_LANES]; unsigned num_lanes_used; @@ -3791,13 +3792,12 @@ static void dsi_config_vp_num_line_buffers(struct platform_device *dsidev) if (dsi->mode == OMAP_DSS_DSI_VIDEO_MODE) { int bpp = dsi_get_pixel_size(dsi->pix_fmt); - unsigned line_buf_size = dsi_get_line_buf_size(dsidev); struct omap_video_timings *timings = &dsi->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) + if (dsi->line_buffer_size <= timings->x_res * bpp / 8) num_line_buffers = 0; else num_line_buffers = 2; @@ -4447,7 +4447,7 @@ static void dsi_update_screen_dispc(struct platform_device *dsidev) u32 l; int r; const unsigned channel = dsi->update_channel; - const unsigned line_buf_size = dsi_get_line_buf_size(dsidev); + const unsigned line_buf_size = dsi->line_buffer_size; u16 w = dsi->timings.x_res; u16 h = dsi->timings.y_res; @@ -5293,6 +5293,8 @@ static int __init omap_dsihw_probe(struct platform_device *dsidev) else dsi->num_lanes_supported = 3; + dsi->line_buffer_size = dsi_get_line_buf_size(dsidev); + dsi_init_output(dsidev); dsi_probe_pdata(dsidev); -- cgit v1.2.3 From 478d7df8af89f449bacc4e67ff35dc630400c0ca Mon Sep 17 00:00:00 2001 From: Tomi Valkeinen Date: Tue, 5 Mar 2013 16:29:36 +0200 Subject: OMAPDSS: DSI: add enum omap_dss_dsi_trans_mode Instead of managing DSI sync ends with booleans, add an enum for the DSI transfer mode. This is much cleaner way to handle the DSI syncs. Signed-off-by: Tomi Valkeinen --- drivers/video/omap2/dss/dsi.c | 15 ++++++++++----- include/video/omapdss.h | 13 ++++++++++--- 2 files changed, 20 insertions(+), 8 deletions(-) (limited to 'drivers/video/omap2/dss/dsi.c') diff --git a/drivers/video/omap2/dss/dsi.c b/drivers/video/omap2/dss/dsi.c index 590da06e6a82..e8f5bdb2796c 100644 --- a/drivers/video/omap2/dss/dsi.c +++ b/drivers/video/omap2/dss/dsi.c @@ -3813,18 +3813,22 @@ static void dsi_config_vp_num_line_buffers(struct platform_device *dsidev) static void dsi_config_vp_sync_events(struct platform_device *dsidev) { struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); - bool vsync_end = dsi->vm_timings.vp_vsync_end; - bool hsync_end = dsi->vm_timings.vp_hsync_end; + bool sync_end; u32 r; + if (dsi->vm_timings.trans_mode == OMAP_DSS_DSI_PULSE_MODE) + sync_end = true; + else + sync_end = false; + r = dsi_read_reg(dsidev, DSI_CTRL); r = FLD_MOD(r, 1, 9, 9); /* VP_DE_POL */ r = FLD_MOD(r, 1, 10, 10); /* VP_HSYNC_POL */ r = FLD_MOD(r, 1, 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, sync_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 */ + r = FLD_MOD(r, sync_end, 18, 18); /* VP_HSYNC_END */ dsi_write_reg(dsidev, DSI_CTRL, r); } @@ -4171,11 +4175,12 @@ static void dsi_proto_timings(struct platform_device *dsidev) int vfp = dsi->vm_timings.vfp; int vbp = dsi->vm_timings.vbp; int window_sync = dsi->vm_timings.window_sync; - bool hsync_end = dsi->vm_timings.vp_hsync_end; + bool hsync_end; struct omap_video_timings *timings = &dsi->timings; int bpp = dsi_get_pixel_size(dsi->pix_fmt); int tl, t_he, width_bytes; + hsync_end = dsi->vm_timings.trans_mode == OMAP_DSS_DSI_PULSE_MODE; t_he = hsync_end ? ((hsa == 0 && ndl == 3) ? 1 : DIV_ROUND_UP(4, ndl)) : 0; diff --git a/include/video/omapdss.h b/include/video/omapdss.h index 4dd4cea41bd4..7f774c5f8b6b 100644 --- a/include/video/omapdss.h +++ b/include/video/omapdss.h @@ -257,6 +257,15 @@ void rfbi_bus_unlock(void); /* DSI */ +enum omap_dss_dsi_trans_mode { + /* Sync Pulses: both sync start and end packets sent */ + OMAP_DSS_DSI_PULSE_MODE, + /* Sync Events: only sync start packets sent */ + OMAP_DSS_DSI_EVENT_MODE, + /* Burst: only sync start packets sent, pixels are time compressed */ + OMAP_DSS_DSI_BURST_MODE, +}; + struct omap_dss_dsi_videomode_timings { /* DSI video mode blanking data */ /* Unit: byte clock cycles */ @@ -274,9 +283,7 @@ struct omap_dss_dsi_videomode_timings { int hbp_blanking_mode; int hfp_blanking_mode; - /* Video port sync events */ - bool vp_vsync_end; - bool vp_hsync_end; + enum omap_dss_dsi_trans_mode trans_mode; bool ddr_clk_always_on; int window_sync; -- cgit v1.2.3 From 4ce9e33c0f6abc4203f25f5fc287bf072de32513 Mon Sep 17 00:00:00 2001 From: Tomi Valkeinen Date: Tue, 5 Mar 2013 17:11:16 +0200 Subject: OMAPDSS: DSI remove unneeded clk source setup code We always use the same clock sources for DSI, so let's remove the unnecessary clock source fields from dsi_data. Signed-off-by: Tomi Valkeinen --- drivers/video/omap2/dss/dsi.c | 24 ++++++------------------ 1 file changed, 6 insertions(+), 18 deletions(-) (limited to 'drivers/video/omap2/dss/dsi.c') diff --git a/drivers/video/omap2/dss/dsi.c b/drivers/video/omap2/dss/dsi.c index e8f5bdb2796c..110a505332db 100644 --- a/drivers/video/omap2/dss/dsi.c +++ b/drivers/video/omap2/dss/dsi.c @@ -269,10 +269,6 @@ struct dsi_data { struct dispc_clock_info user_dispc_cinfo; struct dsi_clock_info user_dsi_cinfo; - enum omap_dss_clk_source user_dispc_fclk_src; - enum omap_dss_clk_source user_lcd_clk_src; - enum omap_dss_clk_source user_dsi_fclk_src; - struct dsi_clock_info current_cinfo; bool vdds_dsi_enabled; @@ -4327,18 +4323,6 @@ static int dsi_set_clocks(struct omap_dss_device *dssdev, dsi->user_dispc_cinfo.lck_div = dispc_cinfo.lck_div; dsi->user_dispc_cinfo.pck_div = dispc_cinfo.pck_div; - dsi->user_dispc_fclk_src = OMAP_DSS_CLK_SRC_FCK; - - dsi->user_lcd_clk_src = - dsi->module_id == 0 ? - OMAP_DSS_CLK_SRC_DSI_PLL_HSDIV_DISPC : - OMAP_DSS_CLK_SRC_DSI2_PLL_HSDIV_DISPC; - - dsi->user_dsi_fclk_src = - dsi->module_id == 0 ? - OMAP_DSS_CLK_SRC_DSI_PLL_HSDIV_DSI : - OMAP_DSS_CLK_SRC_DSI2_PLL_HSDIV_DSI; - return 0; err: return r; @@ -4635,7 +4619,9 @@ static int dsi_display_init_dispc(struct platform_device *dsidev, struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); int r; - dss_select_lcd_clk_source(mgr->id, dsi->user_lcd_clk_src); + dss_select_lcd_clk_source(mgr->id, dsi->module_id == 0 ? + OMAP_DSS_CLK_SRC_DSI_PLL_HSDIV_DISPC : + OMAP_DSS_CLK_SRC_DSI2_PLL_HSDIV_DISPC); if (dsi->mode == OMAP_DSS_DSI_CMD_MODE) { dsi->timings.hsw = 1; @@ -4741,7 +4727,9 @@ static int dsi_display_init_dsi(struct platform_device *dsidev) if (r) goto err1; - dss_select_dsi_clk_source(dsi->module_id, dsi->user_dsi_fclk_src); + dss_select_dsi_clk_source(dsi->module_id, dsi->module_id == 0 ? + OMAP_DSS_CLK_SRC_DSI_PLL_HSDIV_DSI : + OMAP_DSS_CLK_SRC_DSI2_PLL_HSDIV_DSI); DSSDBG("PLL OK\n"); -- cgit v1.2.3 From 72658f0716f36efad19d37517456b4a8a7cc7840 Mon Sep 17 00:00:00 2001 From: Tomi Valkeinen Date: Tue, 5 Mar 2013 16:39:00 +0200 Subject: OMAPDSS: DSI: add new clock calculation code Add new way to iterate over DSI PLL and HSDIV clock divisors. dsi_pll_calc() and dss_hsdiv_calc() provide a generic way to go over all the divisors, within given clock range. The functions will call a callback function for each divider set, making the function reusable for all use cases. Signed-off-by: Tomi Valkeinen --- drivers/video/omap2/dss/dsi.c | 69 +++++++++++++++++++++++++++++++++++++++++++ drivers/video/omap2/dss/dss.h | 12 ++++++++ 2 files changed, 81 insertions(+) (limited to 'drivers/video/omap2/dss/dsi.c') diff --git a/drivers/video/omap2/dss/dsi.c b/drivers/video/omap2/dss/dsi.c index 110a505332db..a4e0560c2799 100644 --- a/drivers/video/omap2/dss/dsi.c +++ b/drivers/video/omap2/dss/dsi.c @@ -1280,6 +1280,75 @@ static int dsi_pll_power(struct platform_device *dsidev, return 0; } +unsigned long dsi_get_pll_clkin(struct platform_device *dsidev) +{ + struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); + return clk_get_rate(dsi->sys_clk); +} + +bool dsi_hsdiv_calc(struct platform_device *dsidev, unsigned long pll, + unsigned long out_min, dsi_hsdiv_calc_func func, void *data) +{ + struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); + int regm, regm_start, regm_stop; + unsigned long out_max; + unsigned long out; + + out_min = out_min ? out_min : 1; + out_max = dss_feat_get_param_max(FEAT_PARAM_DSS_FCK); + + regm_start = max(DIV_ROUND_UP(pll, out_max), 1ul); + regm_stop = min(pll / out_min, dsi->regm_dispc_max); + + for (regm = regm_start; regm <= regm_stop; ++regm) { + out = pll / regm; + + if (func(regm, out, data)) + return true; + } + + return false; +} + +bool dsi_pll_calc(struct platform_device *dsidev, unsigned long clkin, + unsigned long pll_min, unsigned long pll_max, + dsi_pll_calc_func func, void *data) +{ + struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); + int regn, regn_start, regn_stop; + int regm, regm_start, regm_stop; + unsigned long fint, pll; + const unsigned long pll_hw_max = 1800000000; + unsigned long fint_hw_min, fint_hw_max; + + fint_hw_min = dsi->fint_min; + fint_hw_max = dsi->fint_max; + + regn_start = max(DIV_ROUND_UP(clkin, fint_hw_max), 1ul); + regn_stop = min(clkin / fint_hw_min, dsi->regn_max); + + pll_max = pll_max ? pll_max : ULONG_MAX; + + for (regn = regn_start; regn <= regn_stop; ++regn) { + fint = clkin / regn; + + regm_start = max(DIV_ROUND_UP(DIV_ROUND_UP(pll_min, fint), 2), + 1ul); + regm_stop = min3(pll_max / fint / 2, + pll_hw_max / fint / 2, + dsi->regm_max); + + for (regm = regm_start; regm <= regm_stop; ++regm) { + pll = 2 * regm * fint; + + if (func(regn, regm, fint, pll, data)) + return true; + } + } + + return false; +} + /* calculate clock rates using dividers in cinfo */ static int dsi_calc_clock_rates(struct platform_device *dsidev, struct dsi_clock_info *cinfo) diff --git a/drivers/video/omap2/dss/dss.h b/drivers/video/omap2/dss/dss.h index 4180302a7fb3..dde6cc109480 100644 --- a/drivers/video/omap2/dss/dss.h +++ b/drivers/video/omap2/dss/dss.h @@ -295,6 +295,18 @@ void dsi_dump_clocks(struct seq_file *s); void dsi_irq_handler(void); u8 dsi_get_pixel_size(enum omap_dss_dsi_pixel_format fmt); +unsigned long dsi_get_pll_clkin(struct platform_device *dsidev); + +typedef bool (*dsi_pll_calc_func)(int regn, int regm, unsigned long fint, + unsigned long pll, void *data); +typedef bool (*dsi_hsdiv_calc_func)(int regm_dispc, unsigned long dispc, + void *data); +bool dsi_hsdiv_calc(struct platform_device *dsidev, unsigned long pll, + unsigned long out_min, dsi_hsdiv_calc_func func, void *data); +bool dsi_pll_calc(struct platform_device *dsidev, unsigned long clkin, + unsigned long pll_min, unsigned long pll_max, + dsi_pll_calc_func func, void *data); + unsigned long dsi_get_pll_hsdiv_dispc_rate(struct platform_device *dsidev); int dsi_pll_set_clock_div(struct platform_device *dsidev, struct dsi_clock_info *cinfo); -- cgit v1.2.3 From f1e0001f973cfbec62d702cbd3d56f6b703cc90e Mon Sep 17 00:00:00 2001 From: Tomi Valkeinen Date: Tue, 5 Mar 2013 17:21:35 +0200 Subject: OMAPDSS: DSI: use new clock calculation code Use the new clock calculation code in the DSI driver. The new code does not need DSI video mode parameters from the panel driver, like the old code does. Instead the new code is given the normal video timings, and a few DSI parameters, which are used to create DSI video timings. Signed-off-by: Tomi Valkeinen --- drivers/video/omap2/displays/panel-taal.c | 7 +- drivers/video/omap2/dss/dsi.c | 557 +++++++++++++++++++++++++++++- include/video/omapdss.h | 20 +- 3 files changed, 566 insertions(+), 18 deletions(-) (limited to 'drivers/video/omap2/dss/dsi.c') diff --git a/drivers/video/omap2/displays/panel-taal.c b/drivers/video/omap2/displays/panel-taal.c index eb86cbae8c2a..2fc923de23cc 100644 --- a/drivers/video/omap2/displays/panel-taal.c +++ b/drivers/video/omap2/displays/panel-taal.c @@ -787,6 +787,7 @@ static int taal_probe(struct omap_dss_device *dssdev) dssdev->panel.timings.x_res = 864; dssdev->panel.timings.y_res = 480; + dssdev->panel.timings.pixel_clock = DIV_ROUND_UP(864 * 480 * 60, 1000); dssdev->panel.dsi_pix_fmt = OMAP_DSS_DSI_FMT_RGB888; dssdev->caps = OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE | OMAP_DSS_DISPLAY_CAP_TEAR_ELIM; @@ -923,8 +924,10 @@ static int taal_power_on(struct omap_dss_device *dssdev) .mode = OMAP_DSS_DSI_CMD_MODE, .pixel_format = OMAP_DSS_DSI_FMT_RGB888, .timings = &dssdev->panel.timings, - .hs_clk = 216000000, - .lp_clk = 10000000, + .hs_clk_min = 150000000, + .hs_clk_max = 300000000, + .lp_clk_min = 7000000, + .lp_clk_max = 10000000, }; r = omapdss_dsi_configure_pins(dssdev, &td->pin_config); diff --git a/drivers/video/omap2/dss/dsi.c b/drivers/video/omap2/dss/dsi.c index a4e0560c2799..de88e69ef0a2 100644 --- a/drivers/video/omap2/dss/dsi.c +++ b/drivers/video/omap2/dss/dsi.c @@ -255,6 +255,24 @@ struct dsi_isr_tables { struct dsi_isr_data isr_table_cio[DSI_MAX_NR_ISRS]; }; +struct dsi_clk_calc_ctx { + struct platform_device *dsidev; + + /* inputs */ + + const struct omap_dss_dsi_config *config; + + unsigned long req_pck_min, req_pck_nom, req_pck_max; + + /* outputs */ + + struct dsi_clock_info dsi_cinfo; + struct dispc_clock_info dispc_cinfo; + + struct omap_video_timings dispc_vm; + struct omap_dss_dsi_videomode_timings dsi_vm; +}; + struct dsi_data { struct platform_device *pdev; void __iomem *base; @@ -1201,6 +1219,25 @@ static unsigned long dsi_fclk_rate(struct platform_device *dsidev) return r; } +static int dsi_lp_clock_calc(struct dsi_clock_info *cinfo, + unsigned long lp_clk_min, unsigned long lp_clk_max) +{ + unsigned long dsi_fclk = cinfo->dsi_pll_hsdiv_dsi_clk; + unsigned lp_clk_div; + unsigned long lp_clk; + + lp_clk_div = DIV_ROUND_UP(dsi_fclk, lp_clk_max * 2); + lp_clk = dsi_fclk / 2 / lp_clk_div; + + if (lp_clk < lp_clk_min || lp_clk > lp_clk_max) + return -EINVAL; + + cinfo->lp_clk_div = lp_clk_div; + cinfo->lp_clk = lp_clk; + + return 0; +} + static int dsi_set_lp_clk_divisor(struct platform_device *dsidev) { struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); @@ -1577,8 +1614,7 @@ found: return 0; } -static void dsi_pll_calc_dsi_fck(struct platform_device *dsidev, - struct dsi_clock_info *cinfo) +static void dsi_pll_calc_dsi_fck(struct dsi_clock_info *cinfo) { unsigned long max_dsi_fck; @@ -4369,7 +4405,7 @@ static int dsi_set_clocks(struct omap_dss_device *dssdev, goto err; /* Calculate PLL's DSI clock */ - dsi_pll_calc_dsi_fck(dsidev, &cinfo); + dsi_pll_calc_dsi_fck(&cinfo); /* Calculate PLL's DISPC clock and pck & lck divs */ pck = cinfo.clkin4ddr / 16 * (dsi->num_lanes_used - 1) * 8 / bpp; @@ -4693,13 +4729,6 @@ static int dsi_display_init_dispc(struct platform_device *dsidev, OMAP_DSS_CLK_SRC_DSI2_PLL_HSDIV_DISPC); if (dsi->mode == OMAP_DSS_DSI_CMD_MODE) { - dsi->timings.hsw = 1; - dsi->timings.hfp = 1; - dsi->timings.hbp = 1; - dsi->timings.vsw = 1; - dsi->timings.vfp = 0; - dsi->timings.vbp = 0; - r = dss_mgr_register_framedone_handler(mgr, dsi_framedone_irq_callback, dsidev); if (r) { @@ -4941,24 +4970,526 @@ int omapdss_dsi_enable_te(struct omap_dss_device *dssdev, bool enable) } EXPORT_SYMBOL(omapdss_dsi_enable_te); +#ifdef PRINT_VERBOSE_VM_TIMINGS +static void print_dsi_vm(const char *str, + const struct omap_dss_dsi_videomode_timings *t) +{ + unsigned long byteclk = t->hsclk / 4; + int bl, wc, pps, tot; + + wc = DIV_ROUND_UP(t->hact * t->bitspp, 8); + pps = DIV_ROUND_UP(wc + 6, t->ndl); /* pixel packet size */ + bl = t->hss + t->hsa + t->hse + t->hbp + t->hfp; + tot = bl + pps; + +#define TO_DSI_T(x) ((u32)div64_u64((u64)x * 1000000000llu, byteclk)) + + pr_debug("%s bck %lu, %u/%u/%u/%u/%u/%u = %u+%u = %u, " + "%u/%u/%u/%u/%u/%u = %u + %u = %u\n", + str, + byteclk, + t->hss, t->hsa, t->hse, t->hbp, pps, t->hfp, + bl, pps, tot, + TO_DSI_T(t->hss), + TO_DSI_T(t->hsa), + TO_DSI_T(t->hse), + TO_DSI_T(t->hbp), + TO_DSI_T(pps), + TO_DSI_T(t->hfp), + + TO_DSI_T(bl), + TO_DSI_T(pps), + + TO_DSI_T(tot)); +#undef TO_DSI_T +} + +static void print_dispc_vm(const char *str, const struct omap_video_timings *t) +{ + unsigned long pck = t->pixel_clock * 1000; + int hact, bl, tot; + + hact = t->x_res; + bl = t->hsw + t->hbp + t->hfp; + tot = hact + bl; + +#define TO_DISPC_T(x) ((u32)div64_u64((u64)x * 1000000000llu, pck)) + + pr_debug("%s pck %lu, %u/%u/%u/%u = %u+%u = %u, " + "%u/%u/%u/%u = %u + %u = %u\n", + str, + pck, + t->hsw, t->hbp, hact, t->hfp, + bl, hact, tot, + TO_DISPC_T(t->hsw), + TO_DISPC_T(t->hbp), + TO_DISPC_T(hact), + TO_DISPC_T(t->hfp), + TO_DISPC_T(bl), + TO_DISPC_T(hact), + TO_DISPC_T(tot)); +#undef TO_DISPC_T +} + +/* note: this is not quite accurate */ +static void print_dsi_dispc_vm(const char *str, + const struct omap_dss_dsi_videomode_timings *t) +{ + struct omap_video_timings vm = { 0 }; + unsigned long byteclk = t->hsclk / 4; + unsigned long pck; + u64 dsi_tput; + int dsi_hact, dsi_htot; + + dsi_tput = (u64)byteclk * t->ndl * 8; + pck = (u32)div64_u64(dsi_tput, t->bitspp); + dsi_hact = DIV_ROUND_UP(DIV_ROUND_UP(t->hact * t->bitspp, 8) + 6, t->ndl); + dsi_htot = t->hss + t->hsa + t->hse + t->hbp + dsi_hact + t->hfp; + + vm.pixel_clock = pck / 1000; + vm.hsw = div64_u64((u64)(t->hsa + t->hse) * pck, byteclk); + vm.hbp = div64_u64((u64)t->hbp * pck, byteclk); + vm.hfp = div64_u64((u64)t->hfp * pck, byteclk); + vm.x_res = t->hact; + + print_dispc_vm(str, &vm); +} +#endif /* PRINT_VERBOSE_VM_TIMINGS */ + +static bool dsi_cm_calc_dispc_cb(int lckd, int pckd, unsigned long lck, + unsigned long pck, void *data) +{ + struct dsi_clk_calc_ctx *ctx = data; + struct omap_video_timings *t = &ctx->dispc_vm; + + ctx->dispc_cinfo.lck_div = lckd; + ctx->dispc_cinfo.pck_div = pckd; + ctx->dispc_cinfo.lck = lck; + ctx->dispc_cinfo.pck = pck; + + *t = *ctx->config->timings; + t->pixel_clock = pck / 1000; + t->x_res = ctx->config->timings->x_res; + t->y_res = ctx->config->timings->y_res; + t->hsw = t->hfp = t->hbp = t->vsw = 1; + t->vfp = t->vbp = 0; + + return true; +} + +static bool dsi_cm_calc_hsdiv_cb(int regm_dispc, unsigned long dispc, + void *data) +{ + struct dsi_clk_calc_ctx *ctx = data; + + ctx->dsi_cinfo.regm_dispc = regm_dispc; + ctx->dsi_cinfo.dsi_pll_hsdiv_dispc_clk = dispc; + + return dispc_div_calc(dispc, ctx->req_pck_min, ctx->req_pck_max, + dsi_cm_calc_dispc_cb, ctx); +} + +static bool dsi_cm_calc_pll_cb(int regn, int regm, unsigned long fint, + unsigned long pll, void *data) +{ + struct dsi_clk_calc_ctx *ctx = data; + + ctx->dsi_cinfo.regn = regn; + ctx->dsi_cinfo.regm = regm; + ctx->dsi_cinfo.fint = fint; + ctx->dsi_cinfo.clkin4ddr = pll; + + return dsi_hsdiv_calc(ctx->dsidev, pll, ctx->req_pck_min, + dsi_cm_calc_hsdiv_cb, ctx); +} + +static bool dsi_cm_calc(struct dsi_data *dsi, + const struct omap_dss_dsi_config *cfg, + struct dsi_clk_calc_ctx *ctx) +{ + unsigned long clkin; + int bitspp, ndl; + unsigned long pll_min, pll_max; + unsigned long pck, txbyteclk; + + clkin = clk_get_rate(dsi->sys_clk); + bitspp = dsi_get_pixel_size(cfg->pixel_format); + ndl = dsi->num_lanes_used - 1; + + /* + * Here we should calculate minimum txbyteclk to be able to send the + * frame in time, and also to handle TE. That's not very simple, though, + * especially as we go to LP between each pixel packet due to HW + * "feature". So let's just estimate very roughly and multiply by 1.5. + */ + pck = cfg->timings->pixel_clock * 1000; + pck = pck * 3 / 2; + txbyteclk = pck * bitspp / 8 / ndl; + + memset(ctx, 0, sizeof(*ctx)); + ctx->dsidev = dsi->pdev; + ctx->config = cfg; + ctx->req_pck_min = pck; + ctx->req_pck_nom = pck; + ctx->req_pck_max = pck * 3 / 2; + ctx->dsi_cinfo.clkin = clkin; + + pll_min = max(cfg->hs_clk_min * 4, txbyteclk * 4 * 4); + pll_max = cfg->hs_clk_max * 4; + + return dsi_pll_calc(dsi->pdev, clkin, + pll_min, pll_max, + dsi_cm_calc_pll_cb, ctx); +} + +static bool dsi_vm_calc_blanking(struct dsi_clk_calc_ctx *ctx) +{ + struct dsi_data *dsi = dsi_get_dsidrv_data(ctx->dsidev); + const struct omap_dss_dsi_config *cfg = ctx->config; + int bitspp = dsi_get_pixel_size(cfg->pixel_format); + int ndl = dsi->num_lanes_used - 1; + unsigned long hsclk = ctx->dsi_cinfo.clkin4ddr / 4; + unsigned long byteclk = hsclk / 4; + + unsigned long dispc_pck, req_pck_min, req_pck_nom, req_pck_max; + int xres; + int panel_htot, panel_hbl; /* pixels */ + int dispc_htot, dispc_hbl; /* pixels */ + int dsi_htot, dsi_hact, dsi_hbl, hss, hse; /* byteclks */ + int hfp, hsa, hbp; + const struct omap_video_timings *req_vm; + struct omap_video_timings *dispc_vm; + struct omap_dss_dsi_videomode_timings *dsi_vm; + u64 dsi_tput, dispc_tput; + + dsi_tput = (u64)byteclk * ndl * 8; + + req_vm = cfg->timings; + req_pck_min = ctx->req_pck_min; + req_pck_max = ctx->req_pck_max; + req_pck_nom = ctx->req_pck_nom; + + dispc_pck = ctx->dispc_cinfo.pck; + dispc_tput = (u64)dispc_pck * bitspp; + + xres = req_vm->x_res; + + panel_hbl = req_vm->hfp + req_vm->hbp + req_vm->hsw; + panel_htot = xres + panel_hbl; + + dsi_hact = DIV_ROUND_UP(DIV_ROUND_UP(xres * bitspp, 8) + 6, ndl); + + /* + * When there are no line buffers, DISPC and DSI must have the + * same tput. Otherwise DISPC tput needs to be higher than DSI's. + */ + if (dsi->line_buffer_size < xres * bitspp / 8) { + if (dispc_tput != dsi_tput) + return false; + } else { + if (dispc_tput < dsi_tput) + return false; + } + + /* DSI tput must be over the min requirement */ + if (dsi_tput < (u64)bitspp * req_pck_min) + return false; + + /* When non-burst mode, DSI tput must be below max requirement. */ + if (cfg->trans_mode != OMAP_DSS_DSI_BURST_MODE) { + if (dsi_tput > (u64)bitspp * req_pck_max) + return false; + } + + hss = DIV_ROUND_UP(4, ndl); + + if (cfg->trans_mode == OMAP_DSS_DSI_PULSE_MODE) { + if (ndl == 3 && req_vm->hsw == 0) + hse = 1; + else + hse = DIV_ROUND_UP(4, ndl); + } else { + hse = 0; + } + + /* DSI htot to match the panel's nominal pck */ + dsi_htot = div64_u64((u64)panel_htot * byteclk, req_pck_nom); + + /* fail if there would be no time for blanking */ + if (dsi_htot < hss + hse + dsi_hact) + return false; + + /* total DSI blanking needed to achieve panel's TL */ + dsi_hbl = dsi_htot - dsi_hact; + + /* DISPC htot to match the DSI TL */ + dispc_htot = div64_u64((u64)dsi_htot * dispc_pck, byteclk); + + /* verify that the DSI and DISPC TLs are the same */ + if ((u64)dsi_htot * dispc_pck != (u64)dispc_htot * byteclk) + return false; + + dispc_hbl = dispc_htot - xres; + + /* setup DSI videomode */ + + dsi_vm = &ctx->dsi_vm; + memset(dsi_vm, 0, sizeof(*dsi_vm)); + + dsi_vm->hsclk = hsclk; + + dsi_vm->ndl = ndl; + dsi_vm->bitspp = bitspp; + + if (cfg->trans_mode != OMAP_DSS_DSI_PULSE_MODE) { + hsa = 0; + } else if (ndl == 3 && req_vm->hsw == 0) { + hsa = 0; + } else { + hsa = div64_u64((u64)req_vm->hsw * byteclk, req_pck_nom); + hsa = max(hsa - hse, 1); + } + + hbp = div64_u64((u64)req_vm->hbp * byteclk, req_pck_nom); + hbp = max(hbp, 1); + + hfp = dsi_hbl - (hss + hsa + hse + hbp); + if (hfp < 1) { + int t; + /* we need to take cycles from hbp */ + + t = 1 - hfp; + hbp = max(hbp - t, 1); + hfp = dsi_hbl - (hss + hsa + hse + hbp); + + if (hfp < 1 && hsa > 0) { + /* we need to take cycles from hsa */ + t = 1 - hfp; + hsa = max(hsa - t, 1); + hfp = dsi_hbl - (hss + hsa + hse + hbp); + } + } + + if (hfp < 1) + return false; + + dsi_vm->hss = hss; + dsi_vm->hsa = hsa; + dsi_vm->hse = hse; + dsi_vm->hbp = hbp; + dsi_vm->hact = xres; + dsi_vm->hfp = hfp; + + dsi_vm->vsa = req_vm->vsw; + dsi_vm->vbp = req_vm->vbp; + dsi_vm->vact = req_vm->y_res; + dsi_vm->vfp = req_vm->vfp; + + dsi_vm->trans_mode = cfg->trans_mode; + + dsi_vm->blanking_mode = 0; + dsi_vm->hsa_blanking_mode = 1; + dsi_vm->hfp_blanking_mode = 1; + dsi_vm->hbp_blanking_mode = 1; + + dsi_vm->ddr_clk_always_on = cfg->ddr_clk_always_on; + dsi_vm->window_sync = 4; + + /* setup DISPC videomode */ + + dispc_vm = &ctx->dispc_vm; + *dispc_vm = *req_vm; + dispc_vm->pixel_clock = dispc_pck / 1000; + + if (cfg->trans_mode == OMAP_DSS_DSI_PULSE_MODE) { + hsa = div64_u64((u64)req_vm->hsw * dispc_pck, + req_pck_nom); + hsa = max(hsa, 1); + } else { + hsa = 1; + } + + hbp = div64_u64((u64)req_vm->hbp * dispc_pck, req_pck_nom); + hbp = max(hbp, 1); + + hfp = dispc_hbl - hsa - hbp; + if (hfp < 1) { + int t; + /* we need to take cycles from hbp */ + + t = 1 - hfp; + hbp = max(hbp - t, 1); + hfp = dispc_hbl - hsa - hbp; + + if (hfp < 1) { + /* we need to take cycles from hsa */ + t = 1 - hfp; + hsa = max(hsa - t, 1); + hfp = dispc_hbl - hsa - hbp; + } + } + + if (hfp < 1) + return false; + + dispc_vm->hfp = hfp; + dispc_vm->hsw = hsa; + dispc_vm->hbp = hbp; + + return true; +} + + +static bool dsi_vm_calc_dispc_cb(int lckd, int pckd, unsigned long lck, + unsigned long pck, void *data) +{ + struct dsi_clk_calc_ctx *ctx = data; + + ctx->dispc_cinfo.lck_div = lckd; + ctx->dispc_cinfo.pck_div = pckd; + ctx->dispc_cinfo.lck = lck; + ctx->dispc_cinfo.pck = pck; + + if (dsi_vm_calc_blanking(ctx) == false) + return false; + +#ifdef PRINT_VERBOSE_VM_TIMINGS + print_dispc_vm("dispc", &ctx->dispc_vm); + print_dsi_vm("dsi ", &ctx->dsi_vm); + print_dispc_vm("req ", ctx->config->timings); + print_dsi_dispc_vm("act ", &ctx->dsi_vm); +#endif + + return true; +} + +static bool dsi_vm_calc_hsdiv_cb(int regm_dispc, unsigned long dispc, + void *data) +{ + struct dsi_clk_calc_ctx *ctx = data; + unsigned long pck_max; + + ctx->dsi_cinfo.regm_dispc = regm_dispc; + ctx->dsi_cinfo.dsi_pll_hsdiv_dispc_clk = dispc; + + /* + * In burst mode we can let the dispc pck be arbitrarily high, but it + * limits our scaling abilities. So for now, don't aim too high. + */ + + if (ctx->config->trans_mode == OMAP_DSS_DSI_BURST_MODE) + pck_max = ctx->req_pck_max + 10000000; + else + pck_max = ctx->req_pck_max; + + return dispc_div_calc(dispc, ctx->req_pck_min, pck_max, + dsi_vm_calc_dispc_cb, ctx); +} + +static bool dsi_vm_calc_pll_cb(int regn, int regm, unsigned long fint, + unsigned long pll, void *data) +{ + struct dsi_clk_calc_ctx *ctx = data; + + ctx->dsi_cinfo.regn = regn; + ctx->dsi_cinfo.regm = regm; + ctx->dsi_cinfo.fint = fint; + ctx->dsi_cinfo.clkin4ddr = pll; + + return dsi_hsdiv_calc(ctx->dsidev, pll, ctx->req_pck_min, + dsi_vm_calc_hsdiv_cb, ctx); +} + +static bool dsi_vm_calc(struct dsi_data *dsi, + const struct omap_dss_dsi_config *cfg, + struct dsi_clk_calc_ctx *ctx) +{ + const struct omap_video_timings *t = cfg->timings; + unsigned long clkin; + unsigned long pll_min; + unsigned long pll_max; + int ndl = dsi->num_lanes_used - 1; + int bitspp = dsi_get_pixel_size(cfg->pixel_format); + unsigned long byteclk_min; + + clkin = clk_get_rate(dsi->sys_clk); + + memset(ctx, 0, sizeof(*ctx)); + ctx->dsidev = dsi->pdev; + ctx->config = cfg; + + ctx->dsi_cinfo.clkin = clkin; + + /* these limits should come from the panel driver */ + ctx->req_pck_min = t->pixel_clock * 1000 - 1000; + ctx->req_pck_nom = t->pixel_clock * 1000; + ctx->req_pck_max = t->pixel_clock * 1000 + 1000; + + byteclk_min = div64_u64((u64)ctx->req_pck_min * bitspp, ndl * 8); + pll_min = max(cfg->hs_clk_min * 4, byteclk_min * 4 * 4); + + if (cfg->trans_mode == OMAP_DSS_DSI_BURST_MODE) { + pll_max = cfg->hs_clk_max * 4; + } else { + unsigned long byteclk_max; + byteclk_max = div64_u64((u64)ctx->req_pck_max * bitspp, + ndl * 8); + + pll_max = byteclk_max * 4 * 4; + } + + return dsi_pll_calc(dsi->pdev, clkin, + pll_min, pll_max, + dsi_vm_calc_pll_cb, ctx); +} + int omapdss_dsi_set_config(struct omap_dss_device *dssdev, const struct omap_dss_dsi_config *config) { struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev); struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); + struct dsi_clk_calc_ctx ctx; + bool ok; + int r; mutex_lock(&dsi->lock); - dsi->timings = *config->timings; - dsi->vm_timings = *config->vm_timings; dsi->pix_fmt = config->pixel_format; dsi->mode = config->mode; - dsi_set_clocks(dssdev, config->hs_clk, config->lp_clk); + if (config->mode == OMAP_DSS_DSI_VIDEO_MODE) + ok = dsi_vm_calc(dsi, config, &ctx); + else + ok = dsi_cm_calc(dsi, config, &ctx); + + if (!ok) { + DSSERR("failed to find suitable DSI clock settings\n"); + r = -EINVAL; + goto err; + } + + dsi_pll_calc_dsi_fck(&ctx.dsi_cinfo); + + r = dsi_lp_clock_calc(&ctx.dsi_cinfo, config->lp_clk_min, + config->lp_clk_max); + if (r) { + DSSERR("failed to find suitable DSI LP clock settings\n"); + goto err; + } + + dsi->user_dsi_cinfo = ctx.dsi_cinfo; + dsi->user_dispc_cinfo = ctx.dispc_cinfo; + + dsi->timings = ctx.dispc_vm; + dsi->vm_timings = ctx.dsi_vm; mutex_unlock(&dsi->lock); return 0; +err: + mutex_unlock(&dsi->lock); + + return r; } EXPORT_SYMBOL(omapdss_dsi_set_config); diff --git a/include/video/omapdss.h b/include/video/omapdss.h index 7f774c5f8b6b..8821d933d9fd 100644 --- a/include/video/omapdss.h +++ b/include/video/omapdss.h @@ -267,9 +267,21 @@ enum omap_dss_dsi_trans_mode { }; struct omap_dss_dsi_videomode_timings { + unsigned long hsclk; + + unsigned ndl; + unsigned bitspp; + + /* pixels */ + u16 hact; + /* lines */ + u16 vact; + /* DSI video mode blanking data */ /* Unit: byte clock cycles */ + u16 hss; u16 hsa; + u16 hse; u16 hfp; u16 hbp; /* Unit: line clocks */ @@ -293,10 +305,12 @@ struct omap_dss_dsi_config { enum omap_dss_dsi_mode mode; enum omap_dss_dsi_pixel_format pixel_format; const struct omap_video_timings *timings; - const struct omap_dss_dsi_videomode_timings *vm_timings; - unsigned long hs_clk; - unsigned long lp_clk; + unsigned long hs_clk_min, hs_clk_max; + unsigned long lp_clk_min, lp_clk_max; + + bool ddr_clk_always_on; + enum omap_dss_dsi_trans_mode trans_mode; }; void dsi_bus_lock(struct omap_dss_device *dssdev); -- cgit v1.2.3 From b7ec96c78b0d5c89f5a1082e62e0d0021b2920ed Mon Sep 17 00:00:00 2001 From: Tomi Valkeinen Date: Tue, 5 Mar 2013 17:23:59 +0200 Subject: OMAPDSS: remove unused old clock calculation code Now that the old clock calculation code is no longer used, we can remove it from the driver. Signed-off-by: Tomi Valkeinen --- drivers/video/omap2/dss/dispc.c | 48 ------ drivers/video/omap2/dss/dsi.c | 317 ---------------------------------------- drivers/video/omap2/dss/dss.c | 115 --------------- drivers/video/omap2/dss/dss.h | 15 -- 4 files changed, 495 deletions(-) (limited to 'drivers/video/omap2/dss/dsi.c') diff --git a/drivers/video/omap2/dss/dispc.c b/drivers/video/omap2/dss/dispc.c index cd54e8fe2d58..8cfa27b4fdd8 100644 --- a/drivers/video/omap2/dss/dispc.c +++ b/drivers/video/omap2/dss/dispc.c @@ -3311,54 +3311,6 @@ static void dispc_dump_regs(struct seq_file *s) #undef DUMPREG } -/* with fck as input clock rate, find dispc dividers that produce req_pck */ -void dispc_find_clk_divs(unsigned long req_pck, unsigned long fck, - struct dispc_clock_info *cinfo) -{ - u16 pcd_min, pcd_max; - unsigned long best_pck; - u16 best_ld, cur_ld; - u16 best_pd, cur_pd; - - pcd_min = dss_feat_get_param_min(FEAT_PARAM_DSS_PCD); - pcd_max = dss_feat_get_param_max(FEAT_PARAM_DSS_PCD); - - best_pck = 0; - best_ld = 0; - best_pd = 0; - - for (cur_ld = 1; cur_ld <= 255; ++cur_ld) { - unsigned long lck = fck / cur_ld; - - for (cur_pd = pcd_min; cur_pd <= pcd_max; ++cur_pd) { - unsigned long pck = lck / cur_pd; - long old_delta = abs(best_pck - req_pck); - long new_delta = abs(pck - req_pck); - - if (best_pck == 0 || new_delta < old_delta) { - best_pck = pck; - best_ld = cur_ld; - best_pd = cur_pd; - - if (pck == req_pck) - goto found; - } - - if (pck < req_pck) - break; - } - - if (lck / pcd_min < req_pck) - break; - } - -found: - cinfo->lck_div = best_ld; - cinfo->pck_div = best_pd; - cinfo->lck = fck / cinfo->lck_div; - cinfo->pck = cinfo->lck / cinfo->pck_div; -} - /* calculate clock rates using dividers in cinfo */ int dispc_calc_clock_rates(unsigned long dispc_fclk_rate, struct dispc_clock_info *cinfo) diff --git a/drivers/video/omap2/dss/dsi.c b/drivers/video/omap2/dss/dsi.c index de88e69ef0a2..8db29bff0423 100644 --- a/drivers/video/omap2/dss/dsi.c +++ b/drivers/video/omap2/dss/dsi.c @@ -1430,190 +1430,6 @@ static int dsi_calc_clock_rates(struct platform_device *dsidev, return 0; } -int dsi_pll_calc_clock_div_pck(struct platform_device *dsidev, - unsigned long req_pck, struct dsi_clock_info *dsi_cinfo, - struct dispc_clock_info *dispc_cinfo) -{ - struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); - struct dsi_clock_info cur, best; - struct dispc_clock_info best_dispc; - int min_fck_per_pck; - int match = 0; - unsigned long dss_sys_clk, max_dss_fck; - - dss_sys_clk = clk_get_rate(dsi->sys_clk); - - max_dss_fck = dss_feat_get_param_max(FEAT_PARAM_DSS_FCK); - - if (req_pck == dsi->cache_req_pck && - dsi->cache_cinfo.clkin == dss_sys_clk) { - DSSDBG("DSI clock info found from cache\n"); - *dsi_cinfo = dsi->cache_cinfo; - dispc_find_clk_divs(req_pck, dsi_cinfo->dsi_pll_hsdiv_dispc_clk, - dispc_cinfo); - return 0; - } - - min_fck_per_pck = CONFIG_OMAP2_DSS_MIN_FCK_PER_PCK; - - if (min_fck_per_pck && - req_pck * min_fck_per_pck > max_dss_fck) { - DSSERR("Requested pixel clock not possible with the current " - "OMAP2_DSS_MIN_FCK_PER_PCK setting. Turning " - "the constraint off.\n"); - min_fck_per_pck = 0; - } - - DSSDBG("dsi_pll_calc\n"); - -retry: - memset(&best, 0, sizeof(best)); - memset(&best_dispc, 0, sizeof(best_dispc)); - - memset(&cur, 0, sizeof(cur)); - cur.clkin = dss_sys_clk; - - /* 0.75MHz < Fint = clkin / regn < 2.1MHz */ - /* To reduce PLL lock time, keep Fint high (around 2 MHz) */ - for (cur.regn = 1; cur.regn < dsi->regn_max; ++cur.regn) { - cur.fint = cur.clkin / cur.regn; - - if (cur.fint > dsi->fint_max || cur.fint < dsi->fint_min) - continue; - - /* DSIPHY(MHz) = (2 * regm / regn) * clkin */ - for (cur.regm = 1; cur.regm < dsi->regm_max; ++cur.regm) { - unsigned long a, b; - - a = 2 * cur.regm * (cur.clkin/1000); - b = cur.regn; - cur.clkin4ddr = a / b * 1000; - - if (cur.clkin4ddr > 1800 * 1000 * 1000) - break; - - /* dsi_pll_hsdiv_dispc_clk(MHz) = - * DSIPHY(MHz) / regm_dispc < 173MHz/186Mhz */ - for (cur.regm_dispc = 1; cur.regm_dispc < - dsi->regm_dispc_max; ++cur.regm_dispc) { - struct dispc_clock_info cur_dispc; - cur.dsi_pll_hsdiv_dispc_clk = - cur.clkin4ddr / cur.regm_dispc; - - if (cur.regm_dispc > 1 && - cur.regm_dispc % 2 != 0 && - req_pck >= 1000000) - continue; - - /* this will narrow down the search a bit, - * but still give pixclocks below what was - * requested */ - if (cur.dsi_pll_hsdiv_dispc_clk < req_pck) - break; - - if (cur.dsi_pll_hsdiv_dispc_clk > max_dss_fck) - continue; - - if (min_fck_per_pck && - cur.dsi_pll_hsdiv_dispc_clk < - req_pck * min_fck_per_pck) - continue; - - match = 1; - - dispc_find_clk_divs(req_pck, - cur.dsi_pll_hsdiv_dispc_clk, - &cur_dispc); - - if (abs(cur_dispc.pck - req_pck) < - abs(best_dispc.pck - req_pck)) { - best = cur; - best_dispc = cur_dispc; - - if (cur_dispc.pck == req_pck) - goto found; - } - } - } - } -found: - if (!match) { - if (min_fck_per_pck) { - DSSERR("Could not find suitable clock settings.\n" - "Turning FCK/PCK constraint off and" - "trying again.\n"); - min_fck_per_pck = 0; - goto retry; - } - - DSSERR("Could not find suitable clock settings.\n"); - - return -EINVAL; - } - - /* dsi_pll_hsdiv_dsi_clk (regm_dsi) is not used */ - best.regm_dsi = 0; - best.dsi_pll_hsdiv_dsi_clk = 0; - - if (dsi_cinfo) - *dsi_cinfo = best; - if (dispc_cinfo) - *dispc_cinfo = best_dispc; - - dsi->cache_req_pck = req_pck; - dsi->cache_clk_freq = 0; - dsi->cache_cinfo = best; - - return 0; -} - -static int dsi_pll_calc_ddrfreq(struct platform_device *dsidev, - unsigned long req_clkin4ddr, struct dsi_clock_info *cinfo) -{ - struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); - struct dsi_clock_info cur, best; - - DSSDBG("dsi_pll_calc_ddrfreq\n"); - - memset(&best, 0, sizeof(best)); - memset(&cur, 0, sizeof(cur)); - - cur.clkin = clk_get_rate(dsi->sys_clk); - - for (cur.regn = 1; cur.regn < dsi->regn_max; ++cur.regn) { - cur.fint = cur.clkin / cur.regn; - - if (cur.fint > dsi->fint_max || cur.fint < dsi->fint_min) - continue; - - /* DSIPHY(MHz) = (2 * regm / regn) * clkin */ - for (cur.regm = 1; cur.regm < dsi->regm_max; ++cur.regm) { - unsigned long a, b; - - a = 2 * cur.regm * (cur.clkin/1000); - b = cur.regn; - cur.clkin4ddr = a / b * 1000; - - if (cur.clkin4ddr > 1800 * 1000 * 1000) - break; - - if (abs(cur.clkin4ddr - req_clkin4ddr) < - abs(best.clkin4ddr - req_clkin4ddr)) { - best = cur; - DSSDBG("best %ld\n", best.clkin4ddr); - } - - if (cur.clkin4ddr == req_clkin4ddr) - goto found; - } - } -found: - if (cinfo) - *cinfo = best; - - return 0; -} - static void dsi_pll_calc_dsi_fck(struct dsi_clock_info *cinfo) { unsigned long max_dsi_fck; @@ -1624,90 +1440,6 @@ static void dsi_pll_calc_dsi_fck(struct dsi_clock_info *cinfo) cinfo->dsi_pll_hsdiv_dsi_clk = cinfo->clkin4ddr / cinfo->regm_dsi; } -static int dsi_pll_calc_dispc_fck(struct platform_device *dsidev, - unsigned long req_pck, struct dsi_clock_info *cinfo, - struct dispc_clock_info *dispc_cinfo) -{ - struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); - unsigned regm_dispc, best_regm_dispc; - unsigned long dispc_clk, best_dispc_clk; - int min_fck_per_pck; - unsigned long max_dss_fck; - struct dispc_clock_info best_dispc; - bool match; - - max_dss_fck = dss_feat_get_param_max(FEAT_PARAM_DSS_FCK); - - min_fck_per_pck = CONFIG_OMAP2_DSS_MIN_FCK_PER_PCK; - - if (min_fck_per_pck && - req_pck * min_fck_per_pck > max_dss_fck) { - DSSERR("Requested pixel clock not possible with the current " - "OMAP2_DSS_MIN_FCK_PER_PCK setting. Turning " - "the constraint off.\n"); - min_fck_per_pck = 0; - } - -retry: - best_regm_dispc = 0; - best_dispc_clk = 0; - memset(&best_dispc, 0, sizeof(best_dispc)); - match = false; - - for (regm_dispc = 1; regm_dispc < dsi->regm_dispc_max; ++regm_dispc) { - struct dispc_clock_info cur_dispc; - - dispc_clk = cinfo->clkin4ddr / regm_dispc; - - /* this will narrow down the search a bit, - * but still give pixclocks below what was - * requested */ - if (dispc_clk < req_pck) - break; - - if (dispc_clk > max_dss_fck) - continue; - - if (min_fck_per_pck && dispc_clk < req_pck * min_fck_per_pck) - continue; - - match = true; - - dispc_find_clk_divs(req_pck, dispc_clk, &cur_dispc); - - if (abs(cur_dispc.pck - req_pck) < - abs(best_dispc.pck - req_pck)) { - best_regm_dispc = regm_dispc; - best_dispc_clk = dispc_clk; - best_dispc = cur_dispc; - - if (cur_dispc.pck == req_pck) - goto found; - } - } - - if (!match) { - if (min_fck_per_pck) { - DSSERR("Could not find suitable clock settings.\n" - "Turning FCK/PCK constraint off and" - "trying again.\n"); - min_fck_per_pck = 0; - goto retry; - } - - DSSERR("Could not find suitable clock settings.\n"); - - return -EINVAL; - } -found: - cinfo->regm_dispc = best_regm_dispc; - cinfo->dsi_pll_hsdiv_dispc_clk = best_dispc_clk; - - *dispc_cinfo = best_dispc; - - return 0; -} - int dsi_pll_set_clock_div(struct platform_device *dsidev, struct dsi_clock_info *cinfo) { @@ -4384,55 +4116,6 @@ int omapdss_dsi_configure_pins(struct omap_dss_device *dssdev, } EXPORT_SYMBOL(omapdss_dsi_configure_pins); -static int dsi_set_clocks(struct omap_dss_device *dssdev, - unsigned long ddr_clk, unsigned long lp_clk) -{ - struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev); - struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); - struct dsi_clock_info cinfo; - struct dispc_clock_info dispc_cinfo; - unsigned lp_clk_div; - unsigned long dsi_fclk; - int bpp = dsi_get_pixel_size(dssdev->panel.dsi_pix_fmt); - unsigned long pck; - int r; - - DSSDBG("Setting DSI clocks: ddr_clk %lu, lp_clk %lu", ddr_clk, lp_clk); - - /* Calculate PLL output clock */ - r = dsi_pll_calc_ddrfreq(dsidev, ddr_clk * 4, &cinfo); - if (r) - goto err; - - /* Calculate PLL's DSI clock */ - dsi_pll_calc_dsi_fck(&cinfo); - - /* Calculate PLL's DISPC clock and pck & lck divs */ - pck = cinfo.clkin4ddr / 16 * (dsi->num_lanes_used - 1) * 8 / bpp; - DSSDBG("finding dispc dividers for pck %lu\n", pck); - r = dsi_pll_calc_dispc_fck(dsidev, pck, &cinfo, &dispc_cinfo); - if (r) - goto err; - - /* Calculate LP clock */ - dsi_fclk = cinfo.dsi_pll_hsdiv_dsi_clk; - lp_clk_div = DIV_ROUND_UP(dsi_fclk, lp_clk * 2); - - dsi->user_dsi_cinfo.regn = cinfo.regn; - dsi->user_dsi_cinfo.regm = cinfo.regm; - dsi->user_dsi_cinfo.regm_dispc = cinfo.regm_dispc; - dsi->user_dsi_cinfo.regm_dsi = cinfo.regm_dsi; - - dsi->user_dsi_cinfo.lp_clk_div = lp_clk_div; - - dsi->user_dispc_cinfo.lck_div = dispc_cinfo.lck_div; - dsi->user_dispc_cinfo.pck_div = dispc_cinfo.pck_div; - - return 0; -err: - return r; -} - int dsi_enable_video_output(struct omap_dss_device *dssdev, int channel) { struct platform_device *dsidev = dsi_get_dsidev_from_dssdev(dssdev); diff --git a/drivers/video/omap2/dss/dss.c b/drivers/video/omap2/dss/dss.c index eba4127b61a6..fdd32e8d9212 100644 --- a/drivers/video/omap2/dss/dss.c +++ b/drivers/video/omap2/dss/dss.c @@ -581,121 +581,6 @@ static int dss_setup_default_clock(void) return 0; } -int dss_calc_clock_div(unsigned long req_pck, struct dss_clock_info *dss_cinfo, - struct dispc_clock_info *dispc_cinfo) -{ - unsigned long prate; - struct dss_clock_info best_dss; - struct dispc_clock_info best_dispc; - - unsigned long fck, max_dss_fck; - - u16 fck_div; - - int match = 0; - int min_fck_per_pck; - - prate = dss_get_dpll4_rate(); - - max_dss_fck = dss_feat_get_param_max(FEAT_PARAM_DSS_FCK); - - fck = clk_get_rate(dss.dss_clk); - if (req_pck == dss.cache_req_pck && prate == dss.cache_prate && - dss.cache_dss_cinfo.fck == fck) { - DSSDBG("dispc clock info found from cache.\n"); - *dss_cinfo = dss.cache_dss_cinfo; - *dispc_cinfo = dss.cache_dispc_cinfo; - return 0; - } - - min_fck_per_pck = CONFIG_OMAP2_DSS_MIN_FCK_PER_PCK; - - if (min_fck_per_pck && - req_pck * min_fck_per_pck > max_dss_fck) { - DSSERR("Requested pixel clock not possible with the current " - "OMAP2_DSS_MIN_FCK_PER_PCK setting. Turning " - "the constraint off.\n"); - min_fck_per_pck = 0; - } - -retry: - memset(&best_dss, 0, sizeof(best_dss)); - memset(&best_dispc, 0, sizeof(best_dispc)); - - if (dss.dpll4_m4_ck == NULL) { - struct dispc_clock_info cur_dispc; - /* XXX can we change the clock on omap2? */ - fck = clk_get_rate(dss.dss_clk); - fck_div = 1; - - dispc_find_clk_divs(req_pck, fck, &cur_dispc); - match = 1; - - best_dss.fck = fck; - best_dss.fck_div = fck_div; - - best_dispc = cur_dispc; - - goto found; - } else { - for (fck_div = dss.feat->fck_div_max; fck_div > 0; --fck_div) { - struct dispc_clock_info cur_dispc; - - fck = prate / fck_div * dss.feat->dss_fck_multiplier; - - if (fck > max_dss_fck) - continue; - - if (min_fck_per_pck && - fck < req_pck * min_fck_per_pck) - continue; - - match = 1; - - dispc_find_clk_divs(req_pck, fck, &cur_dispc); - - if (abs(cur_dispc.pck - req_pck) < - abs(best_dispc.pck - req_pck)) { - - best_dss.fck = fck; - best_dss.fck_div = fck_div; - - best_dispc = cur_dispc; - - if (cur_dispc.pck == req_pck) - goto found; - } - } - } - -found: - if (!match) { - if (min_fck_per_pck) { - DSSERR("Could not find suitable clock settings.\n" - "Turning FCK/PCK constraint off and" - "trying again.\n"); - min_fck_per_pck = 0; - goto retry; - } - - DSSERR("Could not find suitable clock settings.\n"); - - return -EINVAL; - } - - if (dss_cinfo) - *dss_cinfo = best_dss; - if (dispc_cinfo) - *dispc_cinfo = best_dispc; - - dss.cache_req_pck = req_pck; - dss.cache_prate = prate; - dss.cache_dss_cinfo = best_dss; - dss.cache_dispc_cinfo = best_dispc; - - return 0; -} - void dss_set_venc_output(enum omap_dss_venc_type type) { int l = 0; diff --git a/drivers/video/omap2/dss/dss.h b/drivers/video/omap2/dss/dss.h index dde6cc109480..faaf35857b0e 100644 --- a/drivers/video/omap2/dss/dss.h +++ b/drivers/video/omap2/dss/dss.h @@ -268,8 +268,6 @@ void dss_set_dac_pwrdn_bgz(bool enable); unsigned long dss_get_dpll4_rate(void); int dss_calc_clock_rates(struct dss_clock_info *cinfo); int dss_set_clock_div(struct dss_clock_info *cinfo); -int dss_calc_clock_div(unsigned long req_pck, struct dss_clock_info *dss_cinfo, - struct dispc_clock_info *dispc_cinfo); typedef bool (*dss_div_calc_func)(int fckd, unsigned long fck, void *data); bool dss_div_calc(unsigned long fck_min, dss_div_calc_func func, void *data); @@ -310,9 +308,6 @@ bool dsi_pll_calc(struct platform_device *dsidev, unsigned long clkin, unsigned long dsi_get_pll_hsdiv_dispc_rate(struct platform_device *dsidev); int dsi_pll_set_clock_div(struct platform_device *dsidev, struct dsi_clock_info *cinfo); -int dsi_pll_calc_clock_div_pck(struct platform_device *dsidev, - unsigned long req_pck, struct dsi_clock_info *cinfo, - struct dispc_clock_info *dispc_cinfo); int dsi_pll_init(struct platform_device *dsidev, bool enable_hsclk, bool enable_hsdiv); void dsi_pll_uninit(struct platform_device *dsidev, bool disconnect_lanes); @@ -343,14 +338,6 @@ static inline int dsi_pll_set_clock_div(struct platform_device *dsidev, WARN("%s: DSI not compiled in\n", __func__); return -ENODEV; } -static inline int dsi_pll_calc_clock_div_pck(struct platform_device *dsidev, - unsigned long req_pck, - struct dsi_clock_info *dsi_cinfo, - struct dispc_clock_info *dispc_cinfo) -{ - WARN("%s: DSI not compiled in\n", __func__); - return -ENODEV; -} static inline int dsi_pll_init(struct platform_device *dsidev, bool enable_hsclk, bool enable_hsdiv) { @@ -400,8 +387,6 @@ bool dispc_div_calc(unsigned long dispc, bool dispc_mgr_timings_ok(enum omap_channel channel, const struct omap_video_timings *timings); unsigned long dispc_fclk_rate(void); -void dispc_find_clk_divs(unsigned long req_pck, unsigned long fck, - struct dispc_clock_info *cinfo); int dispc_calc_clock_rates(unsigned long dispc_fclk_rate, struct dispc_clock_info *cinfo); -- cgit v1.2.3 From 5303b3aa77a175a6a312aee6867e740ad1809171 Mon Sep 17 00:00:00 2001 From: Sachin Kamat Date: Tue, 2 Apr 2013 14:33:00 +0300 Subject: OMAPDSS: DSI: Use devm_clk_get() Using devm_clk_get cleans up some code. Signed-off-by: Sachin Kamat Signed-off-by: Tomi Valkeinen --- drivers/video/omap2/dss/dsi.c | 19 ++----------------- 1 file changed, 2 insertions(+), 17 deletions(-) (limited to 'drivers/video/omap2/dss/dsi.c') diff --git a/drivers/video/omap2/dss/dsi.c b/drivers/video/omap2/dss/dsi.c index 28d41d16b7be..36de3fedc3f6 100644 --- a/drivers/video/omap2/dss/dsi.c +++ b/drivers/video/omap2/dss/dsi.c @@ -5073,7 +5073,7 @@ static int dsi_get_clocks(struct platform_device *dsidev) struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); struct clk *clk; - clk = clk_get(&dsidev->dev, "fck"); + clk = devm_clk_get(&dsidev->dev, "fck"); if (IS_ERR(clk)) { DSSERR("can't get fck\n"); return PTR_ERR(clk); @@ -5081,11 +5081,9 @@ static int dsi_get_clocks(struct platform_device *dsidev) dsi->dss_clk = clk; - clk = clk_get(&dsidev->dev, "sys_clk"); + clk = devm_clk_get(&dsidev->dev, "sys_clk"); if (IS_ERR(clk)) { DSSERR("can't get sys_clk\n"); - clk_put(dsi->dss_clk); - dsi->dss_clk = NULL; return PTR_ERR(clk); } @@ -5094,16 +5092,6 @@ static int dsi_get_clocks(struct platform_device *dsidev) return 0; } -static void dsi_put_clocks(struct platform_device *dsidev) -{ - struct dsi_data *dsi = dsi_get_dsidrv_data(dsidev); - - if (dsi->dss_clk) - clk_put(dsi->dss_clk); - if (dsi->sys_clk) - clk_put(dsi->sys_clk); -} - static struct omap_dss_device * __init dsi_find_dssdev(struct platform_device *pdev) { struct omap_dss_board_info *pdata = pdev->dev.platform_data; @@ -5314,7 +5302,6 @@ static int __init omap_dsihw_probe(struct platform_device *dsidev) err_runtime_get: pm_runtime_disable(&dsidev->dev); - dsi_put_clocks(dsidev); return r; } @@ -5330,8 +5317,6 @@ static int __exit omap_dsihw_remove(struct platform_device *dsidev) pm_runtime_disable(&dsidev->dev); - dsi_put_clocks(dsidev); - if (dsi->vdds_dsi_reg != NULL) { if (dsi->vdds_dsi_enabled) { regulator_disable(dsi->vdds_dsi_reg); -- cgit v1.2.3