| /* | |
| * Copyright (c) 2014, Fuzhou Rockchip Electronics Co., Ltd | |
| * | |
| * This program is free software; you can redistribute it and/or modify | |
| * it under the terms of the GNU General Public License as published by | |
| * the Free Software Foundation; either version 2 of the License, or | |
| * (at your option) any later version. | |
| */ | |
| #include <linux/module.h> | |
| #include <linux/platform_device.h> | |
| #include <linux/mfd/syscon.h> | |
| #include <linux/regmap.h> | |
| #include <drm/drm_of.h> | |
| #include <drm/drmP.h> | |
| #include <drm/drm_crtc_helper.h> | |
| #include <drm/drm_edid.h> | |
| #include <drm/bridge/dw_hdmi.h> | |
| #include "rockchip_drm_drv.h" | |
| #include "rockchip_drm_vop.h" | |
| #define GRF_SOC_CON6 0x025c | |
| #define HDMI_SEL_VOP_LIT (1 << 4) | |
| struct rockchip_hdmi { | |
| struct device *dev; | |
| struct regmap *regmap; | |
| struct drm_encoder encoder; | |
| }; | |
| #define to_rockchip_hdmi(x) container_of(x, struct rockchip_hdmi, x) | |
| static const struct dw_hdmi_mpll_config rockchip_mpll_cfg[] = { | |
| { | |
| 27000000, { | |
| { 0x00b3, 0x0000}, | |
| { 0x2153, 0x0000}, | |
| { 0x40f3, 0x0000} | |
| }, | |
| }, { | |
| 36000000, { | |
| { 0x00b3, 0x0000}, | |
| { 0x2153, 0x0000}, | |
| { 0x40f3, 0x0000} | |
| }, | |
| }, { | |
| 40000000, { | |
| { 0x00b3, 0x0000}, | |
| { 0x2153, 0x0000}, | |
| { 0x40f3, 0x0000} | |
| }, | |
| }, { | |
| 54000000, { | |
| { 0x0072, 0x0001}, | |
| { 0x2142, 0x0001}, | |
| { 0x40a2, 0x0001}, | |
| }, | |
| }, { | |
| 65000000, { | |
| { 0x0072, 0x0001}, | |
| { 0x2142, 0x0001}, | |
| { 0x40a2, 0x0001}, | |
| }, | |
| }, { | |
| 66000000, { | |
| { 0x013e, 0x0003}, | |
| { 0x217e, 0x0002}, | |
| { 0x4061, 0x0002} | |
| }, | |
| }, { | |
| 74250000, { | |
| { 0x0072, 0x0001}, | |
| { 0x2145, 0x0002}, | |
| { 0x4061, 0x0002} | |
| }, | |
| }, { | |
| 83500000, { | |
| { 0x0072, 0x0001}, | |
| }, | |
| }, { | |
| 108000000, { | |
| { 0x0051, 0x0002}, | |
| { 0x2145, 0x0002}, | |
| { 0x4061, 0x0002} | |
| }, | |
| }, { | |
| 106500000, { | |
| { 0x0051, 0x0002}, | |
| { 0x2145, 0x0002}, | |
| { 0x4061, 0x0002} | |
| }, | |
| }, { | |
| 146250000, { | |
| { 0x0051, 0x0002}, | |
| { 0x2145, 0x0002}, | |
| { 0x4061, 0x0002} | |
| }, | |
| }, { | |
| 148500000, { | |
| { 0x0051, 0x0003}, | |
| { 0x214c, 0x0003}, | |
| { 0x4064, 0x0003} | |
| }, | |
| }, { | |
| ~0UL, { | |
| { 0x00a0, 0x000a }, | |
| { 0x2001, 0x000f }, | |
| { 0x4002, 0x000f }, | |
| }, | |
| } | |
| }; | |
| static const struct dw_hdmi_curr_ctrl rockchip_cur_ctr[] = { | |
| /* pixelclk bpp8 bpp10 bpp12 */ | |
| { | |
| 40000000, { 0x0018, 0x0018, 0x0018 }, | |
| }, { | |
| 65000000, { 0x0028, 0x0028, 0x0028 }, | |
| }, { | |
| 66000000, { 0x0038, 0x0038, 0x0038 }, | |
| }, { | |
| 74250000, { 0x0028, 0x0038, 0x0038 }, | |
| }, { | |
| 83500000, { 0x0028, 0x0038, 0x0038 }, | |
| }, { | |
| 146250000, { 0x0038, 0x0038, 0x0038 }, | |
| }, { | |
| 148500000, { 0x0000, 0x0038, 0x0038 }, | |
| }, { | |
| ~0UL, { 0x0000, 0x0000, 0x0000}, | |
| } | |
| }; | |
| static const struct dw_hdmi_phy_config rockchip_phy_config[] = { | |
| /*pixelclk symbol term vlev*/ | |
| { 74250000, 0x8009, 0x0004, 0x0272}, | |
| { 148500000, 0x802b, 0x0004, 0x028d}, | |
| { 297000000, 0x8039, 0x0005, 0x028d}, | |
| { ~0UL, 0x0000, 0x0000, 0x0000} | |
| }; | |
| static int rockchip_hdmi_parse_dt(struct rockchip_hdmi *hdmi) | |
| { | |
| struct device_node *np = hdmi->dev->of_node; | |
| hdmi->regmap = syscon_regmap_lookup_by_phandle(np, "rockchip,grf"); | |
| if (IS_ERR(hdmi->regmap)) { | |
| dev_err(hdmi->dev, "Unable to get rockchip,grf\n"); | |
| return PTR_ERR(hdmi->regmap); | |
| } | |
| return 0; | |
| } | |
| static enum drm_mode_status | |
| dw_hdmi_rockchip_mode_valid(struct drm_connector *connector, | |
| struct drm_display_mode *mode) | |
| { | |
| const struct dw_hdmi_mpll_config *mpll_cfg = rockchip_mpll_cfg; | |
| int pclk = mode->clock * 1000; | |
| bool valid = false; | |
| int i; | |
| for (i = 0; mpll_cfg[i].mpixelclock != (~0UL); i++) { | |
| if (pclk == mpll_cfg[i].mpixelclock) { | |
| valid = true; | |
| break; | |
| } | |
| } | |
| return (valid) ? MODE_OK : MODE_BAD; | |
| } | |
| static const struct drm_encoder_funcs dw_hdmi_rockchip_encoder_funcs = { | |
| .destroy = drm_encoder_cleanup, | |
| }; | |
| static void dw_hdmi_rockchip_encoder_disable(struct drm_encoder *encoder) | |
| { | |
| } | |
| static bool | |
| dw_hdmi_rockchip_encoder_mode_fixup(struct drm_encoder *encoder, | |
| const struct drm_display_mode *mode, | |
| struct drm_display_mode *adj_mode) | |
| { | |
| return true; | |
| } | |
| static void dw_hdmi_rockchip_encoder_mode_set(struct drm_encoder *encoder, | |
| struct drm_display_mode *mode, | |
| struct drm_display_mode *adj_mode) | |
| { | |
| } | |
| static void dw_hdmi_rockchip_encoder_enable(struct drm_encoder *encoder) | |
| { | |
| struct rockchip_hdmi *hdmi = to_rockchip_hdmi(encoder); | |
| u32 val; | |
| int mux; | |
| mux = drm_of_encoder_active_endpoint_id(hdmi->dev->of_node, encoder); | |
| if (mux) | |
| val = HDMI_SEL_VOP_LIT | (HDMI_SEL_VOP_LIT << 16); | |
| else | |
| val = HDMI_SEL_VOP_LIT << 16; | |
| regmap_write(hdmi->regmap, GRF_SOC_CON6, val); | |
| dev_dbg(hdmi->dev, "vop %s output to hdmi\n", | |
| (mux) ? "LIT" : "BIG"); | |
| } | |
| static int | |
| dw_hdmi_rockchip_encoder_atomic_check(struct drm_encoder *encoder, | |
| struct drm_crtc_state *crtc_state, | |
| struct drm_connector_state *conn_state) | |
| { | |
| struct rockchip_crtc_state *s = to_rockchip_crtc_state(crtc_state); | |
| s->output_mode = ROCKCHIP_OUT_MODE_AAAA; | |
| s->output_type = DRM_MODE_CONNECTOR_HDMIA; | |
| return 0; | |
| } | |
| static const struct drm_encoder_helper_funcs dw_hdmi_rockchip_encoder_helper_funcs = { | |
| .mode_fixup = dw_hdmi_rockchip_encoder_mode_fixup, | |
| .mode_set = dw_hdmi_rockchip_encoder_mode_set, | |
| .enable = dw_hdmi_rockchip_encoder_enable, | |
| .disable = dw_hdmi_rockchip_encoder_disable, | |
| .atomic_check = dw_hdmi_rockchip_encoder_atomic_check, | |
| }; | |
| static const struct dw_hdmi_plat_data rockchip_hdmi_drv_data = { | |
| .mode_valid = dw_hdmi_rockchip_mode_valid, | |
| .mpll_cfg = rockchip_mpll_cfg, | |
| .cur_ctr = rockchip_cur_ctr, | |
| .phy_config = rockchip_phy_config, | |
| .dev_type = RK3288_HDMI, | |
| }; | |
| static const struct of_device_id dw_hdmi_rockchip_dt_ids[] = { | |
| { .compatible = "rockchip,rk3288-dw-hdmi", | |
| .data = &rockchip_hdmi_drv_data | |
| }, | |
| {}, | |
| }; | |
| MODULE_DEVICE_TABLE(of, dw_hdmi_rockchip_dt_ids); | |
| static int dw_hdmi_rockchip_bind(struct device *dev, struct device *master, | |
| void *data) | |
| { | |
| struct platform_device *pdev = to_platform_device(dev); | |
| const struct dw_hdmi_plat_data *plat_data; | |
| const struct of_device_id *match; | |
| struct drm_device *drm = data; | |
| struct drm_encoder *encoder; | |
| struct rockchip_hdmi *hdmi; | |
| struct resource *iores; | |
| int irq; | |
| int ret; | |
| if (!pdev->dev.of_node) | |
| return -ENODEV; | |
| hdmi = devm_kzalloc(&pdev->dev, sizeof(*hdmi), GFP_KERNEL); | |
| if (!hdmi) | |
| return -ENOMEM; | |
| match = of_match_node(dw_hdmi_rockchip_dt_ids, pdev->dev.of_node); | |
| plat_data = match->data; | |
| hdmi->dev = &pdev->dev; | |
| encoder = &hdmi->encoder; | |
| irq = platform_get_irq(pdev, 0); | |
| if (irq < 0) | |
| return irq; | |
| iores = platform_get_resource(pdev, IORESOURCE_MEM, 0); | |
| if (!iores) | |
| return -ENXIO; | |
| encoder->possible_crtcs = drm_of_find_possible_crtcs(drm, dev->of_node); | |
| /* | |
| * If we failed to find the CRTC(s) which this encoder is | |
| * supposed to be connected to, it's because the CRTC has | |
| * not been registered yet. Defer probing, and hope that | |
| * the required CRTC is added later. | |
| */ | |
| if (encoder->possible_crtcs == 0) | |
| return -EPROBE_DEFER; | |
| ret = rockchip_hdmi_parse_dt(hdmi); | |
| if (ret) { | |
| dev_err(hdmi->dev, "Unable to parse OF data\n"); | |
| return ret; | |
| } | |
| drm_encoder_helper_add(encoder, &dw_hdmi_rockchip_encoder_helper_funcs); | |
| drm_encoder_init(drm, encoder, &dw_hdmi_rockchip_encoder_funcs, | |
| DRM_MODE_ENCODER_TMDS, NULL); | |
| ret = dw_hdmi_bind(dev, master, data, encoder, iores, irq, plat_data); | |
| /* | |
| * If dw_hdmi_bind() fails we'll never call dw_hdmi_unbind(), | |
| * which would have called the encoder cleanup. Do it manually. | |
| */ | |
| if (ret) | |
| drm_encoder_cleanup(encoder); | |
| return ret; | |
| } | |
| static void dw_hdmi_rockchip_unbind(struct device *dev, struct device *master, | |
| void *data) | |
| { | |
| return dw_hdmi_unbind(dev, master, data); | |
| } | |
| static const struct component_ops dw_hdmi_rockchip_ops = { | |
| .bind = dw_hdmi_rockchip_bind, | |
| .unbind = dw_hdmi_rockchip_unbind, | |
| }; | |
| static int dw_hdmi_rockchip_probe(struct platform_device *pdev) | |
| { | |
| return component_add(&pdev->dev, &dw_hdmi_rockchip_ops); | |
| } | |
| static int dw_hdmi_rockchip_remove(struct platform_device *pdev) | |
| { | |
| component_del(&pdev->dev, &dw_hdmi_rockchip_ops); | |
| return 0; | |
| } | |
| static struct platform_driver dw_hdmi_rockchip_pltfm_driver = { | |
| .probe = dw_hdmi_rockchip_probe, | |
| .remove = dw_hdmi_rockchip_remove, | |
| .driver = { | |
| .name = "dwhdmi-rockchip", | |
| .of_match_table = dw_hdmi_rockchip_dt_ids, | |
| }, | |
| }; | |
| module_platform_driver(dw_hdmi_rockchip_pltfm_driver); | |
| MODULE_AUTHOR("Andy Yan <andy.yan@rock-chips.com>"); | |
| MODULE_AUTHOR("Yakir Yang <ykk@rock-chips.com>"); | |
| MODULE_DESCRIPTION("Rockchip Specific DW-HDMI Driver Extension"); | |
| MODULE_LICENSE("GPL"); | |
| MODULE_ALIAS("platform:dwhdmi-rockchip"); |