From: Maxime Ripard <maxime.ripard@bootlin.com> To: Kishon Vijay Abraham I <kishon@ti.com> Cc: Thomas Petazzoni <thomas.petazzoni@bootlin.com>, Laurent Pinchart <laurent.pinchart@ideasonboard.com>, linux-media@vger.kernel.org, Archit Taneja <architt@codeaurora.org>, Andrzej Hajda <a.hajda@samsung.com>, Chen-Yu Tsai <wens@csie.org>, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-arm-kernel@lists.infradead.org, Krzysztof Witos <kwitos@cadence.com>, Rafal Ciepiela <rafalc@cadence.com>, Maarten Lankhorst <maarten.lankhorst@linux.intel.com>, Sean Paul <seanpaul@chromium.org>, Maxime Ripard <maxime.ripard@bootlin.com> Subject: [PATCH v5 6/9] drm/bridge: cdns: Separate DSI and D-PHY configuration Date: Mon, 21 Jan 2019 16:45:51 +0100 [thread overview] Message-ID: <0b3bea44e05745b65c23af7926ca546bc80a1bcc.1548085432.git-series.maxime.ripard@bootlin.com> (raw) In-Reply-To: <cover.fbf0776c70c0cfb7b7fd88ce6a96b4597d620cac.1548085432.git-series.maxime.ripard@bootlin.com> The current configuration of the DSI bridge and its associated D-PHY is intertwined. In order to ease the future conversion to the phy framework for the D-PHY part, let's split the configuration in two. Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com> --- drivers/gpu/drm/bridge/cdns-dsi.c | 101 ++++++++++++++++++++++--------- 1 file changed, 73 insertions(+), 28 deletions(-) diff --git a/drivers/gpu/drm/bridge/cdns-dsi.c b/drivers/gpu/drm/bridge/cdns-dsi.c index ce9496d13986..796874e76308 100644 --- a/drivers/gpu/drm/bridge/cdns-dsi.c +++ b/drivers/gpu/drm/bridge/cdns-dsi.c @@ -545,6 +545,15 @@ bridge_to_cdns_dsi_input(struct drm_bridge *bridge) return container_of(bridge, struct cdns_dsi_input, bridge); } +static unsigned int mode_to_dpi_hfp(const struct drm_display_mode *mode, + bool mode_valid_check) +{ + if (mode_valid_check) + return mode->hsync_start - mode->hdisplay; + + return mode->crtc_hsync_start - mode->crtc_hdisplay; +} + static int cdns_dsi_get_dphy_pll_cfg(struct cdns_dphy *dphy, struct cdns_dphy_cfg *cfg, unsigned int dpi_htotal, @@ -731,14 +740,12 @@ static unsigned int dpi_to_dsi_timing(unsigned int dpi_timing, static int cdns_dsi_mode2cfg(struct cdns_dsi *dsi, const struct drm_display_mode *mode, struct cdns_dsi_cfg *dsi_cfg, - struct cdns_dphy_cfg *dphy_cfg, bool mode_valid_check) { - unsigned long dsi_htotal = 0, dsi_hss_hsa_hse_hbp = 0; struct cdns_dsi_output *output = &dsi->output; - unsigned int dsi_hfp_ext = 0, dpi_hfp, tmp; + unsigned int tmp; bool sync_pulse = false; - int bpp, nlanes, ret; + int bpp, nlanes; memset(dsi_cfg, 0, sizeof(*dsi_cfg)); @@ -757,8 +764,6 @@ static int cdns_dsi_mode2cfg(struct cdns_dsi *dsi, mode->crtc_hsync_end : mode->crtc_hsync_start); dsi_cfg->hbp = dpi_to_dsi_timing(tmp, bpp, DSI_HBP_FRAME_OVERHEAD); - dsi_htotal += dsi_cfg->hbp + DSI_HBP_FRAME_OVERHEAD; - dsi_hss_hsa_hse_hbp += dsi_cfg->hbp + DSI_HBP_FRAME_OVERHEAD; if (sync_pulse) { if (mode_valid_check) @@ -768,49 +773,91 @@ static int cdns_dsi_mode2cfg(struct cdns_dsi *dsi, dsi_cfg->hsa = dpi_to_dsi_timing(tmp, bpp, DSI_HSA_FRAME_OVERHEAD); - dsi_htotal += dsi_cfg->hsa + DSI_HSA_FRAME_OVERHEAD; - dsi_hss_hsa_hse_hbp += dsi_cfg->hsa + DSI_HSA_FRAME_OVERHEAD; } dsi_cfg->hact = dpi_to_dsi_timing(mode_valid_check ? mode->hdisplay : mode->crtc_hdisplay, bpp, 0); - dsi_htotal += dsi_cfg->hact; + dsi_cfg->hfp = dpi_to_dsi_timing(mode_to_dpi_hfp(mode, mode_valid_check), + bpp, DSI_HFP_FRAME_OVERHEAD); - if (mode_valid_check) - dpi_hfp = mode->hsync_start - mode->hdisplay; - else - dpi_hfp = mode->crtc_hsync_start - mode->crtc_hdisplay; + return 0; +} + +static int cdns_dphy_validate(struct cdns_dsi *dsi, + struct cdns_dsi_cfg *dsi_cfg, + struct cdns_dphy_cfg *dphy_cfg, + const struct drm_display_mode *mode, + bool mode_valid_check) +{ + struct cdns_dsi_output *output = &dsi->output; + unsigned long dsi_htotal; + unsigned int dsi_hfp_ext = 0; + + int ret; + + dsi_htotal = dsi_cfg->hbp + DSI_HBP_FRAME_OVERHEAD; + if (output->dev->mode_flags & MIPI_DSI_MODE_VIDEO_SYNC_PULSE) + dsi_htotal += dsi_cfg->hsa + DSI_HSA_FRAME_OVERHEAD; - dsi_cfg->hfp = dpi_to_dsi_timing(dpi_hfp, bpp, DSI_HFP_FRAME_OVERHEAD); + dsi_htotal += dsi_cfg->hact; dsi_htotal += dsi_cfg->hfp + DSI_HFP_FRAME_OVERHEAD; if (mode_valid_check) ret = cdns_dsi_get_dphy_pll_cfg(dsi->dphy, dphy_cfg, - mode->htotal, bpp, + mode->htotal, mode->clock * 1000, - dsi_htotal, nlanes, + mipi_dsi_pixel_format_to_bpp(output->dev->format), + dsi_htotal, + output->dev->lanes, &dsi_hfp_ext); else ret = cdns_dsi_get_dphy_pll_cfg(dsi->dphy, dphy_cfg, - mode->crtc_htotal, bpp, + mode->crtc_htotal, + mipi_dsi_pixel_format_to_bpp(output->dev->format), mode->crtc_clock * 1000, - dsi_htotal, nlanes, + dsi_htotal, + output->dev->lanes, &dsi_hfp_ext); - if (ret) return ret; dsi_cfg->hfp += dsi_hfp_ext; - dsi_htotal += dsi_hfp_ext; - dsi_cfg->htotal = dsi_htotal; + dsi_cfg->htotal = dsi_htotal + dsi_hfp_ext; + + return 0; +} + +static int cdns_dsi_check_conf(struct cdns_dsi *dsi, + const struct drm_display_mode *mode, + struct cdns_dsi_cfg *dsi_cfg, + struct cdns_dphy_cfg *dphy_cfg, + bool mode_valid_check) +{ + struct cdns_dsi_output *output = &dsi->output; + unsigned long dsi_hss_hsa_hse_hbp; + unsigned int nlanes = output->dev->lanes; + int ret; + + ret = cdns_dsi_mode2cfg(dsi, mode, dsi_cfg, mode_valid_check); + if (ret) + return ret; + + ret = cdns_dphy_validate(dsi, dsi_cfg, dphy_cfg, mode, mode_valid_check); + if (ret) + return ret; + + dsi_hss_hsa_hse_hbp = dsi_cfg->hbp + DSI_HBP_FRAME_OVERHEAD; + if (output->dev->mode_flags & MIPI_DSI_MODE_VIDEO_SYNC_PULSE) + dsi_hss_hsa_hse_hbp += dsi_cfg->hsa + DSI_HSA_FRAME_OVERHEAD; /* * Make sure DPI(HFP) > DSI(HSS+HSA+HSE+HBP) to guarantee that the FIFO * is empty before we start a receiving a new line on the DPI * interface. */ - if ((u64)dphy_cfg->lane_bps * dpi_hfp * nlanes < + if ((u64)dphy_cfg->lane_bps * + mode_to_dpi_hfp(mode, mode_valid_check) * nlanes < (u64)dsi_hss_hsa_hse_hbp * (mode_valid_check ? mode->clock : mode->crtc_clock) * 1000) return -EINVAL; @@ -842,7 +889,7 @@ cdns_dsi_bridge_mode_valid(struct drm_bridge *bridge, struct cdns_dsi_output *output = &dsi->output; struct cdns_dphy_cfg dphy_cfg; struct cdns_dsi_cfg dsi_cfg; - int bpp, nlanes, ret; + int bpp, ret; /* * VFP_DSI should be less than VFP_DPI and VFP_DSI should be at @@ -860,11 +907,9 @@ cdns_dsi_bridge_mode_valid(struct drm_bridge *bridge, if ((mode->hdisplay * bpp) % 32) return MODE_H_ILLEGAL; - nlanes = output->dev->lanes; - - ret = cdns_dsi_mode2cfg(dsi, mode, &dsi_cfg, &dphy_cfg, true); + ret = cdns_dsi_check_conf(dsi, mode, &dsi_cfg, &dphy_cfg, true); if (ret) - return MODE_CLOCK_RANGE; + return MODE_BAD; return MODE_OK; } @@ -990,7 +1035,7 @@ static void cdns_dsi_bridge_enable(struct drm_bridge *bridge) bpp = mipi_dsi_pixel_format_to_bpp(output->dev->format); nlanes = output->dev->lanes; - WARN_ON_ONCE(cdns_dsi_mode2cfg(dsi, mode, &dsi_cfg, &dphy_cfg, false)); + WARN_ON_ONCE(cdns_dsi_check_conf(dsi, mode, &dsi_cfg, &dphy_cfg, false)); cdns_dsi_hs_init(dsi, &dphy_cfg); cdns_dsi_init_link(dsi); -- git-series 0.9.1
WARNING: multiple messages have this Message-ID (diff)
From: Maxime Ripard <maxime.ripard@bootlin.com> To: Kishon Vijay Abraham I <kishon@ti.com> Cc: Archit Taneja <architt@codeaurora.org>, Rafal Ciepiela <rafalc@cadence.com>, Krzysztof Witos <kwitos@cadence.com>, Maxime Ripard <maxime.ripard@bootlin.com>, Maarten Lankhorst <maarten.lankhorst@linux.intel.com>, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, Andrzej Hajda <a.hajda@samsung.com>, Chen-Yu Tsai <wens@csie.org>, Sean Paul <seanpaul@chromium.org>, Laurent Pinchart <laurent.pinchart@ideasonboard.com>, Thomas Petazzoni <thomas.petazzoni@bootlin.com>, linux-arm-kernel@lists.infradead.org, linux-media@vger.kernel.org Subject: [PATCH v5 6/9] drm/bridge: cdns: Separate DSI and D-PHY configuration Date: Mon, 21 Jan 2019 16:45:51 +0100 [thread overview] Message-ID: <0b3bea44e05745b65c23af7926ca546bc80a1bcc.1548085432.git-series.maxime.ripard@bootlin.com> (raw) In-Reply-To: <cover.fbf0776c70c0cfb7b7fd88ce6a96b4597d620cac.1548085432.git-series.maxime.ripard@bootlin.com> The current configuration of the DSI bridge and its associated D-PHY is intertwined. In order to ease the future conversion to the phy framework for the D-PHY part, let's split the configuration in two. Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com> --- drivers/gpu/drm/bridge/cdns-dsi.c | 101 ++++++++++++++++++++++--------- 1 file changed, 73 insertions(+), 28 deletions(-) diff --git a/drivers/gpu/drm/bridge/cdns-dsi.c b/drivers/gpu/drm/bridge/cdns-dsi.c index ce9496d13986..796874e76308 100644 --- a/drivers/gpu/drm/bridge/cdns-dsi.c +++ b/drivers/gpu/drm/bridge/cdns-dsi.c @@ -545,6 +545,15 @@ bridge_to_cdns_dsi_input(struct drm_bridge *bridge) return container_of(bridge, struct cdns_dsi_input, bridge); } +static unsigned int mode_to_dpi_hfp(const struct drm_display_mode *mode, + bool mode_valid_check) +{ + if (mode_valid_check) + return mode->hsync_start - mode->hdisplay; + + return mode->crtc_hsync_start - mode->crtc_hdisplay; +} + static int cdns_dsi_get_dphy_pll_cfg(struct cdns_dphy *dphy, struct cdns_dphy_cfg *cfg, unsigned int dpi_htotal, @@ -731,14 +740,12 @@ static unsigned int dpi_to_dsi_timing(unsigned int dpi_timing, static int cdns_dsi_mode2cfg(struct cdns_dsi *dsi, const struct drm_display_mode *mode, struct cdns_dsi_cfg *dsi_cfg, - struct cdns_dphy_cfg *dphy_cfg, bool mode_valid_check) { - unsigned long dsi_htotal = 0, dsi_hss_hsa_hse_hbp = 0; struct cdns_dsi_output *output = &dsi->output; - unsigned int dsi_hfp_ext = 0, dpi_hfp, tmp; + unsigned int tmp; bool sync_pulse = false; - int bpp, nlanes, ret; + int bpp, nlanes; memset(dsi_cfg, 0, sizeof(*dsi_cfg)); @@ -757,8 +764,6 @@ static int cdns_dsi_mode2cfg(struct cdns_dsi *dsi, mode->crtc_hsync_end : mode->crtc_hsync_start); dsi_cfg->hbp = dpi_to_dsi_timing(tmp, bpp, DSI_HBP_FRAME_OVERHEAD); - dsi_htotal += dsi_cfg->hbp + DSI_HBP_FRAME_OVERHEAD; - dsi_hss_hsa_hse_hbp += dsi_cfg->hbp + DSI_HBP_FRAME_OVERHEAD; if (sync_pulse) { if (mode_valid_check) @@ -768,49 +773,91 @@ static int cdns_dsi_mode2cfg(struct cdns_dsi *dsi, dsi_cfg->hsa = dpi_to_dsi_timing(tmp, bpp, DSI_HSA_FRAME_OVERHEAD); - dsi_htotal += dsi_cfg->hsa + DSI_HSA_FRAME_OVERHEAD; - dsi_hss_hsa_hse_hbp += dsi_cfg->hsa + DSI_HSA_FRAME_OVERHEAD; } dsi_cfg->hact = dpi_to_dsi_timing(mode_valid_check ? mode->hdisplay : mode->crtc_hdisplay, bpp, 0); - dsi_htotal += dsi_cfg->hact; + dsi_cfg->hfp = dpi_to_dsi_timing(mode_to_dpi_hfp(mode, mode_valid_check), + bpp, DSI_HFP_FRAME_OVERHEAD); - if (mode_valid_check) - dpi_hfp = mode->hsync_start - mode->hdisplay; - else - dpi_hfp = mode->crtc_hsync_start - mode->crtc_hdisplay; + return 0; +} + +static int cdns_dphy_validate(struct cdns_dsi *dsi, + struct cdns_dsi_cfg *dsi_cfg, + struct cdns_dphy_cfg *dphy_cfg, + const struct drm_display_mode *mode, + bool mode_valid_check) +{ + struct cdns_dsi_output *output = &dsi->output; + unsigned long dsi_htotal; + unsigned int dsi_hfp_ext = 0; + + int ret; + + dsi_htotal = dsi_cfg->hbp + DSI_HBP_FRAME_OVERHEAD; + if (output->dev->mode_flags & MIPI_DSI_MODE_VIDEO_SYNC_PULSE) + dsi_htotal += dsi_cfg->hsa + DSI_HSA_FRAME_OVERHEAD; - dsi_cfg->hfp = dpi_to_dsi_timing(dpi_hfp, bpp, DSI_HFP_FRAME_OVERHEAD); + dsi_htotal += dsi_cfg->hact; dsi_htotal += dsi_cfg->hfp + DSI_HFP_FRAME_OVERHEAD; if (mode_valid_check) ret = cdns_dsi_get_dphy_pll_cfg(dsi->dphy, dphy_cfg, - mode->htotal, bpp, + mode->htotal, mode->clock * 1000, - dsi_htotal, nlanes, + mipi_dsi_pixel_format_to_bpp(output->dev->format), + dsi_htotal, + output->dev->lanes, &dsi_hfp_ext); else ret = cdns_dsi_get_dphy_pll_cfg(dsi->dphy, dphy_cfg, - mode->crtc_htotal, bpp, + mode->crtc_htotal, + mipi_dsi_pixel_format_to_bpp(output->dev->format), mode->crtc_clock * 1000, - dsi_htotal, nlanes, + dsi_htotal, + output->dev->lanes, &dsi_hfp_ext); - if (ret) return ret; dsi_cfg->hfp += dsi_hfp_ext; - dsi_htotal += dsi_hfp_ext; - dsi_cfg->htotal = dsi_htotal; + dsi_cfg->htotal = dsi_htotal + dsi_hfp_ext; + + return 0; +} + +static int cdns_dsi_check_conf(struct cdns_dsi *dsi, + const struct drm_display_mode *mode, + struct cdns_dsi_cfg *dsi_cfg, + struct cdns_dphy_cfg *dphy_cfg, + bool mode_valid_check) +{ + struct cdns_dsi_output *output = &dsi->output; + unsigned long dsi_hss_hsa_hse_hbp; + unsigned int nlanes = output->dev->lanes; + int ret; + + ret = cdns_dsi_mode2cfg(dsi, mode, dsi_cfg, mode_valid_check); + if (ret) + return ret; + + ret = cdns_dphy_validate(dsi, dsi_cfg, dphy_cfg, mode, mode_valid_check); + if (ret) + return ret; + + dsi_hss_hsa_hse_hbp = dsi_cfg->hbp + DSI_HBP_FRAME_OVERHEAD; + if (output->dev->mode_flags & MIPI_DSI_MODE_VIDEO_SYNC_PULSE) + dsi_hss_hsa_hse_hbp += dsi_cfg->hsa + DSI_HSA_FRAME_OVERHEAD; /* * Make sure DPI(HFP) > DSI(HSS+HSA+HSE+HBP) to guarantee that the FIFO * is empty before we start a receiving a new line on the DPI * interface. */ - if ((u64)dphy_cfg->lane_bps * dpi_hfp * nlanes < + if ((u64)dphy_cfg->lane_bps * + mode_to_dpi_hfp(mode, mode_valid_check) * nlanes < (u64)dsi_hss_hsa_hse_hbp * (mode_valid_check ? mode->clock : mode->crtc_clock) * 1000) return -EINVAL; @@ -842,7 +889,7 @@ cdns_dsi_bridge_mode_valid(struct drm_bridge *bridge, struct cdns_dsi_output *output = &dsi->output; struct cdns_dphy_cfg dphy_cfg; struct cdns_dsi_cfg dsi_cfg; - int bpp, nlanes, ret; + int bpp, ret; /* * VFP_DSI should be less than VFP_DPI and VFP_DSI should be at @@ -860,11 +907,9 @@ cdns_dsi_bridge_mode_valid(struct drm_bridge *bridge, if ((mode->hdisplay * bpp) % 32) return MODE_H_ILLEGAL; - nlanes = output->dev->lanes; - - ret = cdns_dsi_mode2cfg(dsi, mode, &dsi_cfg, &dphy_cfg, true); + ret = cdns_dsi_check_conf(dsi, mode, &dsi_cfg, &dphy_cfg, true); if (ret) - return MODE_CLOCK_RANGE; + return MODE_BAD; return MODE_OK; } @@ -990,7 +1035,7 @@ static void cdns_dsi_bridge_enable(struct drm_bridge *bridge) bpp = mipi_dsi_pixel_format_to_bpp(output->dev->format); nlanes = output->dev->lanes; - WARN_ON_ONCE(cdns_dsi_mode2cfg(dsi, mode, &dsi_cfg, &dphy_cfg, false)); + WARN_ON_ONCE(cdns_dsi_check_conf(dsi, mode, &dsi_cfg, &dphy_cfg, false)); cdns_dsi_hs_init(dsi, &dphy_cfg); cdns_dsi_init_link(dsi); -- git-series 0.9.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2019-01-21 15:46 UTC|newest] Thread overview: 47+ messages / expand[flat|nested] mbox.gz Atom feed top 2019-01-21 15:45 [PATCH v5 0/9] phy: Add configuration interface for MIPI D-PHY devices Maxime Ripard 2019-01-21 15:45 ` Maxime Ripard 2019-01-21 15:45 ` [PATCH v5 1/9] phy: dphy: Remove unused header Maxime Ripard 2019-01-21 15:45 ` Maxime Ripard 2019-01-21 15:45 ` [PATCH v5 2/9] phy: dphy: Change units of wakeup and init parameters Maxime Ripard 2019-01-21 15:45 ` Maxime Ripard 2019-01-21 15:45 ` [PATCH v5 3/9] phy: dphy: Clarify lanes parameter documentation Maxime Ripard 2019-01-21 15:45 ` Maxime Ripard 2019-01-21 15:45 ` [PATCH v5 4/9] sun6i: dsi: Convert to generic phy handling Maxime Ripard 2019-01-21 15:45 ` Maxime Ripard 2019-02-07 8:15 ` Paul Kocialkowski 2019-02-07 8:15 ` Paul Kocialkowski 2019-01-21 15:45 ` [PATCH v5 5/9] phy: Move Allwinner A31 D-PHY driver to drivers/phy/ Maxime Ripard 2019-01-21 15:45 ` Maxime Ripard 2019-02-07 8:19 ` Paul Kocialkowski 2019-02-07 8:19 ` Paul Kocialkowski 2019-01-21 15:45 ` Maxime Ripard [this message] 2019-01-21 15:45 ` [PATCH v5 6/9] drm/bridge: cdns: Separate DSI and D-PHY configuration Maxime Ripard 2019-02-07 8:44 ` Paul Kocialkowski 2019-02-07 8:44 ` Paul Kocialkowski 2019-02-07 9:16 ` Maxime Ripard 2019-02-07 9:16 ` Maxime Ripard 2019-01-21 15:45 ` [PATCH v5 7/9] dt-bindings: phy: Move the Cadence D-PHY bindings Maxime Ripard 2019-01-21 15:45 ` Maxime Ripard 2019-01-21 15:45 ` [PATCH v5 8/9] phy: Add Cadence D-PHY support Maxime Ripard 2019-01-21 15:45 ` Maxime Ripard 2019-01-21 15:45 ` [PATCH v5 9/9] drm/bridge: cdns: Convert to phy framework Maxime Ripard 2019-01-21 15:45 ` Maxime Ripard 2019-02-04 10:03 ` [PATCH v5 0/9] phy: Add configuration interface for MIPI D-PHY devices Kishon Vijay Abraham I 2019-02-04 10:03 ` Kishon Vijay Abraham I 2019-02-04 10:03 ` Kishon Vijay Abraham I 2019-02-04 13:51 ` Maxime Ripard 2019-02-04 13:51 ` Maxime Ripard 2019-02-05 8:46 ` Daniel Vetter 2019-02-05 8:46 ` Daniel Vetter 2019-02-05 8:46 ` Daniel Vetter 2019-02-06 12:13 ` Kishon Vijay Abraham I 2019-02-06 12:13 ` Kishon Vijay Abraham I 2019-02-06 12:13 ` Kishon Vijay Abraham I 2019-02-06 12:25 ` Maxime Ripard 2019-02-06 12:25 ` Maxime Ripard 2019-02-06 12:30 ` Kishon Vijay Abraham I 2019-02-06 12:30 ` Kishon Vijay Abraham I 2019-02-06 12:30 ` Kishon Vijay Abraham I 2019-02-07 9:17 ` Maxime Ripard 2019-02-07 9:17 ` Maxime Ripard 2019-02-07 9:17 ` Maxime Ripard
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