| /* Copyright (C) 2011-2013 Freescale Semiconductor, Inc. |
| * |
| * derived from imx-hdmi.c(renamed to bridge/dw_hdmi.c now) |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License version 2 as |
| * published by the Free Software Foundation. |
| */ |
| #include <linux/module.h> |
| #include <linux/platform_device.h> |
| #include <linux/component.h> |
| #include <linux/mfd/syscon.h> |
| #include <linux/mfd/syscon/imx6q-iomuxc-gpr.h> |
| #include <drm/bridge/dw_hdmi.h> |
| #include <video/imx-ipu-v3.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/drm_encoder_slave.h> |
| |
| #include "imx-drm.h" |
| |
| struct imx_hdmi { |
| struct device *dev; |
| struct drm_encoder encoder; |
| struct regmap *regmap; |
| }; |
| |
| static const struct dw_hdmi_mpll_config imx_mpll_cfg[] = { |
| { |
| 45250000, { |
| { 0x01e0, 0x0000 }, |
| { 0x21e1, 0x0000 }, |
| { 0x41e2, 0x0000 } |
| }, |
| }, { |
| 92500000, { |
| { 0x0140, 0x0005 }, |
| { 0x2141, 0x0005 }, |
| { 0x4142, 0x0005 }, |
| }, |
| }, { |
| 148500000, { |
| { 0x00a0, 0x000a }, |
| { 0x20a1, 0x000a }, |
| { 0x40a2, 0x000a }, |
| }, |
| }, { |
| ~0UL, { |
| { 0x00a0, 0x000a }, |
| { 0x2001, 0x000f }, |
| { 0x4002, 0x000f }, |
| }, |
| } |
| }; |
| |
| static const struct dw_hdmi_curr_ctrl imx_cur_ctr[] = { |
| /* pixelclk bpp8 bpp10 bpp12 */ |
| { |
| 54000000, { 0x091c, 0x091c, 0x06dc }, |
| }, { |
| 58400000, { 0x091c, 0x06dc, 0x06dc }, |
| }, { |
| 72000000, { 0x06dc, 0x06dc, 0x091c }, |
| }, { |
| 74250000, { 0x06dc, 0x0b5c, 0x091c }, |
| }, { |
| 118800000, { 0x091c, 0x091c, 0x06dc }, |
| }, { |
| 216000000, { 0x06dc, 0x0b5c, 0x091c }, |
| }, { |
| ~0UL, { 0x0000, 0x0000, 0x0000 }, |
| }, |
| }; |
| |
| static const struct dw_hdmi_sym_term imx_sym_term[] = { |
| /*pixelclk symbol term*/ |
| { 148500000, 0x800d, 0x0005 }, |
| { ~0UL, 0x0000, 0x0000 } |
| }; |
| |
| static int dw_hdmi_imx_parse_dt(struct imx_hdmi *hdmi) |
| { |
| struct device_node *np = hdmi->dev->of_node; |
| |
| hdmi->regmap = syscon_regmap_lookup_by_phandle(np, "gpr"); |
| if (IS_ERR(hdmi->regmap)) { |
| dev_err(hdmi->dev, "Unable to get gpr\n"); |
| return PTR_ERR(hdmi->regmap); |
| } |
| |
| return 0; |
| } |
| |
| static void dw_hdmi_imx_encoder_disable(struct drm_encoder *encoder) |
| { |
| } |
| |
| static bool dw_hdmi_imx_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_imx_encoder_mode_set(struct drm_encoder *encoder, |
| struct drm_display_mode *mode, |
| struct drm_display_mode *adj_mode) |
| { |
| } |
| |
| static void dw_hdmi_imx_encoder_commit(struct drm_encoder *encoder) |
| { |
| struct imx_hdmi *hdmi = container_of(encoder, struct imx_hdmi, encoder); |
| int mux = imx_drm_encoder_get_mux_id(hdmi->dev->of_node, encoder); |
| |
| regmap_update_bits(hdmi->regmap, IOMUXC_GPR3, |
| IMX6Q_GPR3_HDMI_MUX_CTL_MASK, |
| mux << IMX6Q_GPR3_HDMI_MUX_CTL_SHIFT); |
| } |
| |
| static void dw_hdmi_imx_encoder_prepare(struct drm_encoder *encoder) |
| { |
| imx_drm_panel_format(encoder, V4L2_PIX_FMT_RGB24); |
| } |
| |
| static struct drm_encoder_helper_funcs dw_hdmi_imx_encoder_helper_funcs = { |
| .mode_fixup = dw_hdmi_imx_encoder_mode_fixup, |
| .mode_set = dw_hdmi_imx_encoder_mode_set, |
| .prepare = dw_hdmi_imx_encoder_prepare, |
| .commit = dw_hdmi_imx_encoder_commit, |
| .disable = dw_hdmi_imx_encoder_disable, |
| }; |
| |
| static struct drm_encoder_funcs dw_hdmi_imx_encoder_funcs = { |
| .destroy = drm_encoder_cleanup, |
| }; |
| |
| static enum drm_mode_status imx6q_hdmi_mode_valid(struct drm_connector *con, |
| struct drm_display_mode *mode) |
| { |
| if (mode->clock < 13500) |
| return MODE_CLOCK_LOW; |
| if (mode->clock > 266000) |
| return MODE_CLOCK_HIGH; |
| |
| return MODE_OK; |
| } |
| |
| static enum drm_mode_status imx6dl_hdmi_mode_valid(struct drm_connector *con, |
| struct drm_display_mode *mode) |
| { |
| if (mode->clock < 13500) |
| return MODE_CLOCK_LOW; |
| if (mode->clock > 270000) |
| return MODE_CLOCK_HIGH; |
| |
| return MODE_OK; |
| } |
| |
| static struct dw_hdmi_plat_data imx6q_hdmi_drv_data = { |
| .mpll_cfg = imx_mpll_cfg, |
| .cur_ctr = imx_cur_ctr, |
| .sym_term = imx_sym_term, |
| .dev_type = IMX6Q_HDMI, |
| .mode_valid = imx6q_hdmi_mode_valid, |
| }; |
| |
| static struct dw_hdmi_plat_data imx6dl_hdmi_drv_data = { |
| .mpll_cfg = imx_mpll_cfg, |
| .cur_ctr = imx_cur_ctr, |
| .sym_term = imx_sym_term, |
| .dev_type = IMX6DL_HDMI, |
| .mode_valid = imx6dl_hdmi_mode_valid, |
| }; |
| |
| static const struct of_device_id dw_hdmi_imx_dt_ids[] = { |
| { .compatible = "fsl,imx6q-hdmi", |
| .data = &imx6q_hdmi_drv_data |
| }, { |
| .compatible = "fsl,imx6dl-hdmi", |
| .data = &imx6dl_hdmi_drv_data |
| }, |
| {}, |
| }; |
| MODULE_DEVICE_TABLE(of, dw_hdmi_imx_dt_ids); |
| |
| static int dw_hdmi_imx_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 imx_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_imx_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; |
| |
| platform_set_drvdata(pdev, hdmi); |
| |
| 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 = dw_hdmi_imx_parse_dt(hdmi); |
| if (ret < 0) |
| return ret; |
| |
| drm_encoder_helper_add(encoder, &dw_hdmi_imx_encoder_helper_funcs); |
| drm_encoder_init(drm, encoder, &dw_hdmi_imx_encoder_funcs, |
| DRM_MODE_ENCODER_TMDS); |
| |
| return dw_hdmi_bind(dev, master, data, encoder, iores, irq, plat_data); |
| } |
| |
| static void dw_hdmi_imx_unbind(struct device *dev, struct device *master, |
| void *data) |
| { |
| return dw_hdmi_unbind(dev, master, data); |
| } |
| |
| static const struct component_ops dw_hdmi_imx_ops = { |
| .bind = dw_hdmi_imx_bind, |
| .unbind = dw_hdmi_imx_unbind, |
| }; |
| |
| static int dw_hdmi_imx_probe(struct platform_device *pdev) |
| { |
| return component_add(&pdev->dev, &dw_hdmi_imx_ops); |
| } |
| |
| static int dw_hdmi_imx_remove(struct platform_device *pdev) |
| { |
| component_del(&pdev->dev, &dw_hdmi_imx_ops); |
| |
| return 0; |
| } |
| |
| static struct platform_driver dw_hdmi_imx_platform_driver = { |
| .probe = dw_hdmi_imx_probe, |
| .remove = dw_hdmi_imx_remove, |
| .driver = { |
| .name = "dwhdmi-imx", |
| .of_match_table = dw_hdmi_imx_dt_ids, |
| }, |
| }; |
| |
| module_platform_driver(dw_hdmi_imx_platform_driver); |
| |
| MODULE_AUTHOR("Andy Yan <andy.yan@rock-chips.com>"); |
| MODULE_AUTHOR("Yakir Yang <ykk@rock-chips.com>"); |
| MODULE_DESCRIPTION("IMX6 Specific DW-HDMI Driver Extension"); |
| MODULE_LICENSE("GPL"); |
| MODULE_ALIAS("platform:dwhdmi-imx"); |