From: Jagan Teki <jagan@amarulasolutions.com> To: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>, Maxime Ripard <maxime.ripard@bootlin.com>, Sean Paul <sean@poorly.run>, David Airlie <airlied@linux.ie>, Rob Herring <robh+dt@kernel.org>, Chen-Yu Tsai <wens@csie.org>, Icenowy Zheng <icenowy@aosc.io>, Jernej Skrabec <jernej.skrabec@siol.net>, Vasily Khoruzhick <anarsoul@gmail.com>, Thierry Reding <thierry.reding@gmail.com>, Mark Rutland <mark.rutland@arm.com>, dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Michael Trimarchi <michael@amarulasolutions.com>, TL Lim <tllim@pine64.org>, linux-sunxi@googlegroups.com Cc: Jagan Teki <jagan@amarulasolutions.com> Subject: [PATCH 01/10] drm/sun4i: sun6i_mipi_dsi: Compute burst mode loop N1 instruction delay Date: Sat, 3 Nov 2018 15:38:51 +0530 [thread overview] Message-ID: <20181103100900.30313-2-jagan@amarulasolutions.com> (raw) In-Reply-To: <20181103100900.30313-1-jagan@amarulasolutions.com> Loop N1 instruction delay for burst mode lcd panel are computed as per BSP code. Reference code is available in BSP (in drivers/video/sunxi/disp2/disp/de/lowlevel_sun50iw1/de_dsi.c) dsi_dev[sel]->dsi_inst_loop_num.bits.loop_n1= (panel->lcd_ht-panel->lcd_x)*(150)/(panel->lcd_dclk_freq*8) - 50; => (((mode->htotal - mode->hdisplay) * 150) / ((mode->clock / 1000) * 8)) - 50; So use the similar computation for loop N1 delay. Signed-off-by: Jagan Teki <jagan@amarulasolutions.com> --- drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c b/drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c index 86430efd9054..da152c21ec62 100644 --- a/drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c +++ b/drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c @@ -394,7 +394,14 @@ static void sun6i_dsi_setup_burst(struct sun6i_dsi *dsi, static void sun6i_dsi_setup_inst_loop(struct sun6i_dsi *dsi, struct drm_display_mode *mode) { - u16 delay = 50 - 1; + struct mipi_dsi_device *device = dsi->device; + u16 delay; + + if (device->mode_flags == MIPI_DSI_MODE_VIDEO_BURST) + delay = (((mode->htotal - mode->hdisplay) * 150) / + ((mode->clock / 1000) * 8)) - 50; + else + delay = 50 - 1; regmap_write(dsi->regs, SUN6I_DSI_INST_LOOP_NUM_REG(0), SUN6I_DSI_INST_LOOP_NUM_N0(50 - 1) | -- 2.18.0.321.gffc6fa0e3
WARNING: multiple messages have this Message-ID (diff)
From: jagan@amarulasolutions.com (Jagan Teki) To: linux-arm-kernel@lists.infradead.org Subject: [PATCH 01/10] drm/sun4i: sun6i_mipi_dsi: Compute burst mode loop N1 instruction delay Date: Sat, 3 Nov 2018 15:38:51 +0530 [thread overview] Message-ID: <20181103100900.30313-2-jagan@amarulasolutions.com> (raw) In-Reply-To: <20181103100900.30313-1-jagan@amarulasolutions.com> Loop N1 instruction delay for burst mode lcd panel are computed as per BSP code. Reference code is available in BSP (in drivers/video/sunxi/disp2/disp/de/lowlevel_sun50iw1/de_dsi.c) dsi_dev[sel]->dsi_inst_loop_num.bits.loop_n1= (panel->lcd_ht-panel->lcd_x)*(150)/(panel->lcd_dclk_freq*8) - 50; => (((mode->htotal - mode->hdisplay) * 150) / ((mode->clock / 1000) * 8)) - 50; So use the similar computation for loop N1 delay. Signed-off-by: Jagan Teki <jagan@amarulasolutions.com> --- drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c b/drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c index 86430efd9054..da152c21ec62 100644 --- a/drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c +++ b/drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c @@ -394,7 +394,14 @@ static void sun6i_dsi_setup_burst(struct sun6i_dsi *dsi, static void sun6i_dsi_setup_inst_loop(struct sun6i_dsi *dsi, struct drm_display_mode *mode) { - u16 delay = 50 - 1; + struct mipi_dsi_device *device = dsi->device; + u16 delay; + + if (device->mode_flags == MIPI_DSI_MODE_VIDEO_BURST) + delay = (((mode->htotal - mode->hdisplay) * 150) / + ((mode->clock / 1000) * 8)) - 50; + else + delay = 50 - 1; regmap_write(dsi->regs, SUN6I_DSI_INST_LOOP_NUM_REG(0), SUN6I_DSI_INST_LOOP_NUM_N0(50 - 1) | -- 2.18.0.321.gffc6fa0e3
next prev parent reply other threads:[~2018-11-03 10:09 UTC|newest] Thread overview: 70+ messages / expand[flat|nested] mbox.gz Atom feed top 2018-11-03 10:08 [PATCH 00/10] drm/sun4i: Allwinner MIPI-DSI Burst mode support Jagan Teki 2018-11-03 10:08 ` Jagan Teki 2018-11-03 10:08 ` Jagan Teki 2018-11-03 10:08 ` Jagan Teki [this message] 2018-11-03 10:08 ` [PATCH 01/10] drm/sun4i: sun6i_mipi_dsi: Compute burst mode loop N1 instruction delay Jagan Teki 2018-11-03 15:23 ` Sergey Suloev 2018-11-03 15:23 ` Sergey Suloev 2018-11-03 15:23 ` Sergey Suloev 2018-11-04 16:45 ` Jagan Teki 2018-11-04 16:45 ` Jagan Teki 2018-11-04 16:45 ` Jagan Teki 2018-11-04 17:57 ` [linux-sunxi] " Priit Laes 2018-11-04 17:57 ` Priit Laes 2018-11-04 17:57 ` Priit Laes 2018-11-05 10:38 ` Maxime Ripard 2018-11-05 10:38 ` Maxime Ripard 2018-11-05 10:38 ` Maxime Ripard 2018-11-03 10:08 ` [PATCH 02/10] drm/sun4i: sun6i_mipi_dsi: Support instruction loop selection Jagan Teki 2018-11-03 10:08 ` Jagan Teki 2018-11-03 10:08 ` Jagan Teki 2018-11-05 10:38 ` Maxime Ripard 2018-11-05 10:38 ` Maxime Ripard 2018-11-05 10:38 ` Maxime Ripard 2018-11-05 11:26 ` Jagan Teki 2018-11-05 11:26 ` Jagan Teki 2018-11-05 11:26 ` Jagan Teki 2018-11-06 15:52 ` Maxime Ripard 2018-11-06 15:52 ` Maxime Ripard 2018-11-06 15:52 ` Maxime Ripard 2018-11-03 10:08 ` [PATCH 03/10] drm/sun4i: sun6i_mipi_dsi: Setup burst mode timings Jagan Teki 2018-11-03 10:08 ` Jagan Teki 2018-11-03 10:08 ` Jagan Teki 2018-11-05 10:40 ` Maxime Ripard 2018-11-05 10:40 ` Maxime Ripard 2018-11-05 10:40 ` Maxime Ripard 2018-11-03 10:08 ` [PATCH 04/10] drm/sun4i: sun6i_mipi_dsi: Setup burst mode Jagan Teki 2018-11-03 10:08 ` Jagan Teki 2018-11-05 10:44 ` Maxime Ripard 2018-11-05 10:44 ` Maxime Ripard 2018-11-05 10:44 ` Maxime Ripard 2018-11-03 10:08 ` [PATCH 05/10] drm/sun4i: sun6i_mipi_dsi: Enable " Jagan Teki 2018-11-03 10:08 ` Jagan Teki 2018-11-05 10:45 ` Maxime Ripard 2018-11-05 10:45 ` Maxime Ripard 2018-11-05 10:45 ` Maxime Ripard 2018-11-03 10:08 ` [PATCH 06/10] drm/sun4i: sun6i_mipi_dsi: Enable 2byte trail for 4-lane " Jagan Teki 2018-11-03 10:08 ` Jagan Teki 2018-11-03 10:08 ` Jagan Teki 2018-11-03 10:08 ` [PATCH 07/10] drm/sun4i: sun6i_mipi_dsi: Enable burst mode HBP, HSA_HSE Jagan Teki 2018-11-03 10:08 ` Jagan Teki 2018-11-03 10:08 ` Jagan Teki 2018-11-05 10:46 ` Maxime Ripard 2018-11-05 10:46 ` Maxime Ripard 2018-11-05 10:46 ` Maxime Ripard 2018-11-03 10:08 ` [PATCH 08/10] dt-bindings: panel: Add Feiyang FY07024DI26A30-D MIPI-DSI LCD panel Jagan Teki 2018-11-03 10:08 ` Jagan Teki 2018-11-03 10:08 ` Jagan Teki 2018-11-12 23:37 ` Rob Herring 2018-11-12 23:37 ` Rob Herring 2018-11-03 10:08 ` [PATCH 09/10] drm/panel: " Jagan Teki 2018-11-03 10:08 ` Jagan Teki 2018-11-03 10:08 ` Jagan Teki 2018-11-04 20:43 ` Sam Ravnborg 2018-11-04 20:43 ` Sam Ravnborg 2018-11-04 20:43 ` Sam Ravnborg 2018-11-05 6:53 ` Jagan Teki 2018-11-05 6:53 ` Jagan Teki 2018-11-05 6:53 ` Jagan Teki 2018-11-03 10:09 ` [PATCH 10/10] [DO NOT MERGE] arm64: allwinner: a64: pine64-lts: Enable Feiyang FY07024DI26A30-D DSI panel Jagan Teki 2018-11-03 10:09 ` Jagan Teki
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