diff options
Diffstat (limited to 'target/linux/layerscape/patches-5.4/805-display-0014-drm-ls1028a-Add-DP-driver-support-for-LS1028A.patch')
| -rw-r--r-- | target/linux/layerscape/patches-5.4/805-display-0014-drm-ls1028a-Add-DP-driver-support-for-LS1028A.patch | 186 |
1 files changed, 186 insertions, 0 deletions
diff --git a/target/linux/layerscape/patches-5.4/805-display-0014-drm-ls1028a-Add-DP-driver-support-for-LS1028A.patch b/target/linux/layerscape/patches-5.4/805-display-0014-drm-ls1028a-Add-DP-driver-support-for-LS1028A.patch new file mode 100644 index 0000000000..c84b119a4f --- /dev/null +++ b/target/linux/layerscape/patches-5.4/805-display-0014-drm-ls1028a-Add-DP-driver-support-for-LS1028A.patch @@ -0,0 +1,186 @@ +From 06e912bd821b21d9360a75cde2d78b03f17a5872 Mon Sep 17 00:00:00 2001 +From: Wen He <wen.he_1@nxp.com> +Date: Tue, 17 Sep 2019 15:35:52 +0800 +Subject: [PATCH] drm: ls1028a: Add DP driver support for LS1028A + +Add Display Port driver support for NXP Layerscape LS1028A platform. + +Signed-off-by: Wen He <wen.he_1@nxp.com> +--- + drivers/gpu/drm/bridge/cadence/cdns-dp-core.c | 1 + + drivers/gpu/drm/imx/Makefile | 2 +- + drivers/gpu/drm/imx/cdn-mhdp-imxdrv.c | 13 +++ + drivers/gpu/drm/imx/cdn-mhdp-ls1028a.c | 110 ++++++++++++++++++++++++++ + drivers/gpu/drm/imx/cdns-mhdp-imx.h | 2 + + 5 files changed, 127 insertions(+), 1 deletion(-) + create mode 100644 drivers/gpu/drm/imx/cdn-mhdp-ls1028a.c + +--- a/drivers/gpu/drm/bridge/cadence/cdns-dp-core.c ++++ b/drivers/gpu/drm/bridge/cadence/cdns-dp-core.c +@@ -275,6 +275,7 @@ static int cdns_dp_bridge_attach(struct + struct drm_connector *connector = &mhdp->connector.base; + + connector->interlace_allowed = 1; ++ + connector->polled = DRM_CONNECTOR_POLL_HPD; + + drm_connector_helper_add(connector, &cdns_dp_connector_helper_funcs); +--- a/drivers/gpu/drm/imx/Makefile ++++ b/drivers/gpu/drm/imx/Makefile +@@ -9,4 +9,4 @@ obj-$(CONFIG_DRM_IMX_TVE) += imx-tve.o + obj-$(CONFIG_DRM_IMX_LDB) += imx-ldb.o + + obj-$(CONFIG_DRM_IMX_HDMI) += dw_hdmi-imx.o +-obj-$(CONFIG_DRM_IMX_CDNS_MHDP) += cdn-mhdp-imxdrv.o cdn-mhdp-dp-phy.o cdn-mhdp-hdmi-phy.o cdn-mhdp-imx8qm.o ++obj-$(CONFIG_DRM_IMX_CDNS_MHDP) += cdn-mhdp-imxdrv.o cdn-mhdp-dp-phy.o cdn-mhdp-hdmi-phy.o cdn-mhdp-imx8qm.o cdn-mhdp-ls1028a.o +--- a/drivers/gpu/drm/imx/cdn-mhdp-imxdrv.c ++++ b/drivers/gpu/drm/imx/cdn-mhdp-imxdrv.c +@@ -94,6 +94,16 @@ static struct cdns_plat_data imx8qm_dp_d + .is_dp = true, + }; + ++static struct cdns_plat_data ls1028a_dp_drv_data = { ++ .bind = cdns_dp_bind, ++ .unbind = cdns_dp_unbind, ++ .phy_set = cdns_dp_phy_set_imx8mq, ++ .power_on = cdns_mhdp_power_on_ls1028a, ++ .firmware_init = cdns_mhdp_firmware_init_imx8qm, ++ .pclk_rate = cdns_mhdp_pclk_rate_ls1028a, ++ .bus_type = BUS_TYPE_NORMAL_APB, ++}; ++ + static const struct of_device_id cdns_mhdp_imx_dt_ids[] = { + { .compatible = "cdn,imx8mq-hdmi", + .data = &imx8mq_hdmi_drv_data +@@ -107,6 +117,9 @@ static const struct of_device_id cdns_mh + { .compatible = "cdn,imx8qm-dp", + .data = &imx8qm_dp_drv_data + }, ++ { .compatible = "cdn,ls1028a-dp", ++ .data = &ls1028a_dp_drv_data ++ }, + {}, + }; + MODULE_DEVICE_TABLE(of, cdns_mhdp_imx_dt_ids); +--- /dev/null ++++ b/drivers/gpu/drm/imx/cdn-mhdp-ls1028a.c +@@ -0,0 +1,110 @@ ++// SPDX-License-Identifier: GPL-2.0 ++/* ++ * Copyright 2019 NXP ++ * ++ */ ++#include <linux/clk.h> ++#include <drm/drmP.h> ++#include <linux/of.h> ++#include <linux/of_address.h> ++#include <linux/of_device.h> ++ ++#include "cdns-mhdp-imx.h" ++ ++static const struct of_device_id scfg_device_ids[] = { ++ { .compatible = "fsl,ls1028a-scfg", }, ++ {} ++}; ++ ++static void ls1028a_phy_reset(u8 reset) ++{ ++ struct device_node *scfg_node; ++ void __iomem *scfg_base = NULL; ++ ++ scfg_node = of_find_matching_node(NULL, scfg_device_ids); ++ if (scfg_node) ++ scfg_base = of_iomap(scfg_node, 0); ++ ++ iowrite32(reset, scfg_base + 0x230); ++} ++ ++int ls1028a_clocks_init(struct imx_mhdp_device *imx_mhdp) ++{ ++ struct device *dev = imx_mhdp->mhdp.dev; ++ struct imx_hdp_clks *clks = &imx_mhdp->clks; ++ ++ clks->clk_core = devm_clk_get(dev, "clk_core"); ++ if (IS_ERR(clks->clk_core)) { ++ dev_warn(dev, "failed to get hdp core clk\n"); ++ return PTR_ERR(clks->clk_core); ++ } ++ ++ clks->clk_pxl = devm_clk_get(dev, "clk_pxl"); ++ if (IS_ERR(clks->clk_pxl)) { ++ dev_warn(dev, "failed to get pxl clk\n"); ++ return PTR_ERR(clks->clk_pxl); ++ } ++ ++ return true; ++} ++ ++static int ls1028a_pixel_clk_enable(struct imx_mhdp_device *imx_mhdp) ++{ ++ struct imx_hdp_clks *clks = &imx_mhdp->clks; ++ struct device *dev = imx_mhdp->mhdp.dev; ++ int ret; ++ ++ ret = clk_prepare_enable(clks->clk_pxl); ++ if (ret < 0) { ++ dev_err(dev, "%s, pre clk pxl error\n", __func__); ++ return ret; ++ } ++ ++ return ret; ++} ++ ++static void ls1028a_pixel_clk_disable(struct imx_mhdp_device *imx_mhdp) ++{ ++ struct imx_hdp_clks *clks = &imx_mhdp->clks; ++ ++ clk_disable_unprepare(clks->clk_pxl); ++} ++ ++static void ls1028a_pixel_clk_set_rate(struct imx_mhdp_device *imx_mhdp, ++ u32 pclock) ++{ ++ struct imx_hdp_clks *clks = &imx_mhdp->clks; ++ ++ clk_set_rate(clks->clk_pxl, pclock); ++} ++ ++int cdns_mhdp_power_on_ls1028a(struct cdns_mhdp_device *mhdp) ++{ ++ struct imx_mhdp_device *imx_mhdp = container_of ++ (mhdp, struct imx_mhdp_device, mhdp); ++ ++ /* clock init and rate set */ ++ ls1028a_clocks_init(imx_mhdp); ++ ++ ls1028a_pixel_clk_enable(imx_mhdp); ++ ++ /* Init pixel clock with 148.5MHz before FW init */ ++ ls1028a_pixel_clk_set_rate(imx_mhdp, 148500000); ++ ++ ls1028a_phy_reset(1); ++ ++ return 0; ++} ++ ++void cdns_mhdp_pclk_rate_ls1028a(struct cdns_mhdp_device *mhdp) ++{ ++ struct imx_mhdp_device *imx_mhdp = container_of ++ (mhdp, struct imx_mhdp_device, mhdp); ++ ++ /* set pixel clock before video mode setup */ ++ ls1028a_pixel_clk_disable(imx_mhdp); ++ ++ ls1028a_pixel_clk_set_rate(imx_mhdp, imx_mhdp->mhdp.mode.clock * 1000); ++ ++ ls1028a_pixel_clk_enable(imx_mhdp); ++} +--- a/drivers/gpu/drm/imx/cdns-mhdp-imx.h ++++ b/drivers/gpu/drm/imx/cdns-mhdp-imx.h +@@ -78,4 +78,6 @@ void cdns_mhdp_plat_deinit_imx8qm(struct + void cdns_mhdp_pclk_rate_imx8qm(struct cdns_mhdp_device *mhdp); + int cdns_mhdp_firmware_init_imx8qm(struct cdns_mhdp_device *mhdp); + int cdns_mhdp_power_on_imx8qm(struct cdns_mhdp_device *mhdp); ++int cdns_mhdp_power_on_ls1028a(struct cdns_mhdp_device *mhdp); ++void cdns_mhdp_pclk_rate_ls1028a(struct cdns_mhdp_device *mhdp); + #endif /* CDNS_MHDP_IMX_H_ */ |