From: Russell King Date: Tue, 21 Jul 2015 09:22:29 +0000 (+0100) Subject: gpu: imx: fix support for interlaced modes X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=aefa627fa3f231c5d86aeb229f15e8478cb6e910;p=linux-beck.git gpu: imx: fix support for interlaced modes The support for interlaced video modes seems to be broken; we don't use anything other than the vtotal/htotal from the timing information to define the various sync counters. Freescale patches for interlaced video support contain an alternative sync counter setup, which we include here. This setup produces the hsync and vsync via the normal counter 2 and 3, but moves the display enable signal from counter 5 to counter 6. Therefore, we need to change the display controller setup as well. The corresponding Freescale patches for this change are: iMX6-HDMI-support-interlaced-display-mode.patch IPU-fine-tuning-the-interlace-display-timing-for-CEA.patch This produces a working interlace format output from the IPU. Tested-by: Philipp Zabel Reviewed-by: Fabio Estevam Signed-off-by: Russell King --- diff --git a/drivers/gpu/ipu-v3/ipu-dc.c b/drivers/gpu/ipu-v3/ipu-dc.c index 9ef2e1f54ca4..d3ad5347342c 100644 --- a/drivers/gpu/ipu-v3/ipu-dc.c +++ b/drivers/gpu/ipu-v3/ipu-dc.c @@ -183,12 +183,19 @@ int ipu_dc_init_sync(struct ipu_dc *dc, struct ipu_di *di, bool interlaced, } if (interlaced) { - dc_link_event(dc, DC_EVT_NL, 0, 3); - dc_link_event(dc, DC_EVT_EOL, 0, 2); - dc_link_event(dc, DC_EVT_NEW_DATA, 0, 1); + int addr; + + if (dc->di) + addr = 1; + else + addr = 0; + + dc_link_event(dc, DC_EVT_NL, addr, 3); + dc_link_event(dc, DC_EVT_EOL, addr, 2); + dc_link_event(dc, DC_EVT_NEW_DATA, addr, 1); /* Init template microcode */ - dc_write_tmpl(dc, 0, WROD(0), 0, map, SYNC_WAVE, 0, 8, 1); + dc_write_tmpl(dc, addr, WROD(0), 0, map, SYNC_WAVE, 0, 6, 1); } else { if (dc->di) { dc_link_event(dc, DC_EVT_NL, 2, 3); diff --git a/drivers/gpu/ipu-v3/ipu-di.c b/drivers/gpu/ipu-v3/ipu-di.c index a96991c5c15f..359268e3a166 100644 --- a/drivers/gpu/ipu-v3/ipu-di.c +++ b/drivers/gpu/ipu-v3/ipu-di.c @@ -71,6 +71,10 @@ enum di_sync_wave { DI_SYNC_HSYNC = 3, DI_SYNC_VSYNC = 4, DI_SYNC_DE = 6, + + DI_SYNC_CNT1 = 2, /* counter >= 2 only */ + DI_SYNC_CNT4 = 5, /* counter >= 5 only */ + DI_SYNC_CNT5 = 6, /* counter >= 6 only */ }; #define SYNC_WAVE 0 @@ -211,66 +215,59 @@ static void ipu_di_sync_config_interlaced(struct ipu_di *di, sig->mode.hback_porch + sig->mode.hfront_porch; u32 v_total = sig->mode.vactive + sig->mode.vsync_len + sig->mode.vback_porch + sig->mode.vfront_porch; - u32 reg; struct di_sync_config cfg[] = { { - .run_count = h_total / 2 - 1, - .run_src = DI_SYNC_CLK, + /* 1: internal VSYNC for each frame */ + .run_count = v_total * 2 - 1, + .run_src = 3, /* == counter 7 */ }, { - .run_count = h_total - 11, + /* PIN2: HSYNC waveform */ + .run_count = h_total - 1, .run_src = DI_SYNC_CLK, - .cnt_down = 4, + .cnt_polarity_gen_en = 1, + .cnt_polarity_trigger_src = DI_SYNC_CLK, + .cnt_down = sig->mode.hsync_len * 2, }, { - .run_count = v_total * 2 - 1, - .run_src = DI_SYNC_INT_HSYNC, - .offset_count = 1, - .offset_src = DI_SYNC_INT_HSYNC, - .cnt_down = 4, + /* PIN3: VSYNC waveform */ + .run_count = v_total - 1, + .run_src = 4, /* == counter 7 */ + .cnt_polarity_gen_en = 1, + .cnt_polarity_trigger_src = 4, /* == counter 7 */ + .cnt_down = sig->mode.vsync_len * 2, + .cnt_clr_src = DI_SYNC_CNT1, }, { - .run_count = v_total / 2 - 1, + /* 4: Field */ + .run_count = v_total / 2, .run_src = DI_SYNC_HSYNC, - .offset_count = sig->mode.vback_porch, - .offset_src = DI_SYNC_HSYNC, + .offset_count = h_total / 2, + .offset_src = DI_SYNC_CLK, .repeat_count = 2, - .cnt_clr_src = DI_SYNC_VSYNC, + .cnt_clr_src = DI_SYNC_CNT1, }, { + /* 5: Active lines */ .run_src = DI_SYNC_HSYNC, - .repeat_count = sig->mode.vactive / 2, - .cnt_clr_src = 4, - }, { - .run_count = v_total - 1, - .run_src = DI_SYNC_HSYNC, - }, { - .run_count = v_total / 2 - 1, - .run_src = DI_SYNC_HSYNC, - .offset_count = 9, + .offset_count = (sig->mode.vsync_len + + sig->mode.vback_porch) / 2, .offset_src = DI_SYNC_HSYNC, - .repeat_count = 2, - .cnt_clr_src = DI_SYNC_VSYNC, + .repeat_count = sig->mode.vactive / 2, + .cnt_clr_src = DI_SYNC_CNT4, }, { + /* 6: Active pixel, referenced by DC */ .run_src = DI_SYNC_CLK, - .offset_count = sig->mode.hback_porch, + .offset_count = sig->mode.hsync_len + + sig->mode.hback_porch, .offset_src = DI_SYNC_CLK, .repeat_count = sig->mode.hactive, - .cnt_clr_src = 5, + .cnt_clr_src = DI_SYNC_CNT5, }, { - .run_count = v_total - 1, - .run_src = DI_SYNC_INT_HSYNC, - .offset_count = v_total / 2, - .offset_src = DI_SYNC_INT_HSYNC, - .cnt_clr_src = DI_SYNC_HSYNC, - .cnt_down = 4, + /* 7: Half line HSYNC */ + .run_count = h_total / 2 - 1, + .run_src = DI_SYNC_CLK, } }; ipu_di_sync_config(di, cfg, 0, ARRAY_SIZE(cfg)); - /* set gentime select and tag sel */ - reg = ipu_di_read(di, DI_SW_GEN1(9)); - reg &= 0x1FFFFFFF; - reg |= (3 - 1) << 29 | 0x00008000; - ipu_di_write(di, reg, DI_SW_GEN1(9)); - ipu_di_write(di, v_total / 2 - 1, DI_SCR_CONF); } @@ -605,10 +602,8 @@ int ipu_di_init_sync_panel(struct ipu_di *di, struct ipu_di_signal_cfg *sig) /* set y_sel = 1 */ di_gen |= 0x10000000; - di_gen |= DI_GEN_POLARITY_5; - di_gen |= DI_GEN_POLARITY_8; - vsync_cnt = 7; + vsync_cnt = 3; } else { ipu_di_sync_config_noninterlaced(di, sig, div);