From: Jagan Teki jagan@edgeble.ai
Add Rockchip RK3328 HDMI Out driver.
Signed-off-by: Jagan Teki jagan@edgeble.ai --- Changes for v3: - drop data Changes for v2: - none
drivers/video/rockchip/Makefile | 1 + drivers/video/rockchip/rk3328_hdmi.c | 126 +++++++++++++++++++++++++++ drivers/video/rockchip/rk_hdmi.h | 3 + 3 files changed, 130 insertions(+) create mode 100644 drivers/video/rockchip/rk3328_hdmi.c
diff --git a/drivers/video/rockchip/Makefile b/drivers/video/rockchip/Makefile index 8128289cc8..4991303c73 100644 --- a/drivers/video/rockchip/Makefile +++ b/drivers/video/rockchip/Makefile @@ -10,6 +10,7 @@ obj-$(CONFIG_ROCKCHIP_RK3399) += rk3399_vop.o obj-$(CONFIG_DISPLAY_ROCKCHIP_EDP) += rk_edp.o obj-$(CONFIG_DISPLAY_ROCKCHIP_LVDS) += rk_lvds.o obj-hdmi-$(CONFIG_ROCKCHIP_RK3288) += rk3288_hdmi.o +obj-hdmi-$(CONFIG_ROCKCHIP_RK3328) += rk3328_hdmi.o obj-hdmi-$(CONFIG_ROCKCHIP_RK3399) += rk3399_hdmi.o obj-$(CONFIG_DISPLAY_ROCKCHIP_HDMI) += rk_hdmi.o $(obj-hdmi-y) obj-mipi-$(CONFIG_ROCKCHIP_RK3288) += rk3288_mipi.o diff --git a/drivers/video/rockchip/rk3328_hdmi.c b/drivers/video/rockchip/rk3328_hdmi.c new file mode 100644 index 0000000000..763669c09b --- /dev/null +++ b/drivers/video/rockchip/rk3328_hdmi.c @@ -0,0 +1,126 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Copyright (c) 2023 Edgeble AI Technologies Pvt. Ltd. + */ + +#include <clk.h> +#include <display.h> +#include <dm.h> +#include <dw_hdmi.h> +#include <asm/io.h> +#include <asm/arch-rockchip/grf_rk3328.h> +#include "rk_hdmi.h" + +#define RK3328_IO_3V_DOMAIN (7 << (9 + 16)) +#define RK3328_IO_5V_DOMAIN ((7 << 9) | (3 << (9 + 16))) +#define RK3328_IO_DDC_IN_MSK ((3 << 10) | (3 << (10 + 16))) +#define RK3328_IO_CTRL_BY_HDMI ((1 << 13) | (1 << (13 + 16))) + +static int rk3328_hdmi_enable(struct udevice *dev, int panel_bpp, + const struct display_timing *edid) +{ + struct rk_hdmi_priv *priv = dev_get_priv(dev); + + return dw_hdmi_enable(&priv->hdmi, edid); +} + +static int rk3328_dw_hdmi_phy_cfg(struct dw_hdmi *hdmi, uint pixclock) +{ + struct rk_hdmi_priv *priv = container_of(hdmi, struct rk_hdmi_priv, hdmi); + int ret; + + ret = generic_phy_init(&priv->phy); + if (ret) { + printf("failed to init phy (ret=%d)\n", ret); + return ret; + } + + ret = generic_phy_power_on(&priv->phy); + if (ret) { + printf("failed to power on phy (ret=%d)\n", ret); + return ret; + } + + return 0; +} + +static void rk3328_dw_hdmi_setup_hpd(struct dw_hdmi *hdmi) +{ + struct rk_hdmi_priv *priv = container_of(hdmi, struct rk_hdmi_priv, hdmi); + struct rk3328_grf_regs *grf = priv->grf; + + writel(RK3328_IO_DDC_IN_MSK, &grf->soc_con[2]); + writel(RK3328_IO_CTRL_BY_HDMI, &grf->soc_con[3]); +} + +static void rk3328_dw_hdmi_read_hpd(struct dw_hdmi *hdmi, bool hpd_status) +{ + struct rk_hdmi_priv *priv = container_of(hdmi, struct rk_hdmi_priv, hdmi); + struct rk3328_grf_regs *grf = priv->grf; + + if (hpd_status) + writel(RK3328_IO_5V_DOMAIN, &grf->soc_con[4]); + else + writel(RK3328_IO_3V_DOMAIN, &grf->soc_con[4]); +} + +static const struct dw_hdmi_phy_ops dw_hdmi_rk3328_phy_ops = { + .phy_set = rk3328_dw_hdmi_phy_cfg, + .setup_hpd = rk3328_dw_hdmi_setup_hpd, + .read_hpd = rk3328_dw_hdmi_read_hpd, +}; + +static int rk3328_hdmi_of_to_plat(struct udevice *dev) +{ + struct rk_hdmi_priv *priv = dev_get_priv(dev); + struct dw_hdmi *hdmi = &priv->hdmi; + + hdmi->i2c_clk_high = 0x71; + hdmi->i2c_clk_low = 0x76; + + rk_hdmi_of_to_plat(dev); + + hdmi->ops = &dw_hdmi_rk3328_phy_ops; + + return 0; +} + +static int rk3328_hdmi_probe(struct udevice *dev) +{ + struct rk_hdmi_priv *priv = dev_get_priv(dev); + int ret; + + ret = generic_phy_get_by_name(dev, "hdmi", &priv->phy); + if (ret) { + printf("failed to get hdmi phy\n"); + return ret; + }; + + ret = rk_hdmi_probe(dev); + if (ret) { + printf("failed to probe rk hdmi\n"); + return ret; + } + + return 0; +} + +static const struct dm_display_ops rk3328_hdmi_ops = { + .read_edid = rk_hdmi_read_edid, + .enable = rk3328_hdmi_enable, +}; + +static const struct udevice_id rk3328_hdmi_ids[] = { + { .compatible = "rockchip,rk3328-dw-hdmi" }, + { } +}; + +U_BOOT_DRIVER(rk3328_hdmi_rockchip) = { + .name = "rk3328_hdmi_rockchip", + .id = UCLASS_DISPLAY, + .of_match = rk3328_hdmi_ids, + .ops = &rk3328_hdmi_ops, + .of_to_plat = rk3328_hdmi_of_to_plat, + .probe = rk3328_hdmi_probe, + .priv_auto = sizeof(struct rk_hdmi_priv), +}; diff --git a/drivers/video/rockchip/rk_hdmi.h b/drivers/video/rockchip/rk_hdmi.h index 200dbaea74..dcfba3d3d7 100644 --- a/drivers/video/rockchip/rk_hdmi.h +++ b/drivers/video/rockchip/rk_hdmi.h @@ -6,6 +6,8 @@ #ifndef __RK_HDMI_H__ #define __RK_HDMI_H__
+#include <generic-phy.h> + struct rkhdmi_driverdata { /* configuration */ u8 i2c_clk_high; @@ -19,6 +21,7 @@ struct rkhdmi_driverdata {
struct rk_hdmi_priv { struct dw_hdmi hdmi; + struct phy phy; void *grf; };