[PATCH v18 12/12] drm: bridge/dw_hdmi: add rockchip rk3288 support
Andy Yan
andy.yan at rock-chips.com
Tue Jan 6 23:48:27 PST 2015
Rockchip RK3288 hdmi is compatible with dw_hdmi
Signed-off-by: Andy Yan <andy.yan at rock-chips.com>
---
Changes in v18:
- fix two compile errors when build as module
Changes in v17:
- parse resource and irq in platform driver
Changes in v16: None
Changes in v15:
- remove THIS_MODULE in platform driver
Changes in v14: None
Changes in v13: None
Changes in v12:
- add comment for the depend on patch
Changes in v11: None
Changes in v10:
- add more display mode support mpll configuration for rk3288
Changes in v9:
- move some phy configuration to platform driver
Changes in v8: None
Changes in v7: None
Changes in v6: None
Changes in v5: None
Changes in v4: None
Changes in v3: None
drivers/gpu/drm/bridge/dw_hdmi.c | 3 +
drivers/gpu/drm/rockchip/Kconfig | 10 +
drivers/gpu/drm/rockchip/Makefile | 2 +
drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c | 341 ++++++++++++++++++++++++++++
include/drm/bridge/dw_hdmi.h | 1 +
5 files changed, 357 insertions(+)
create mode 100644 drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c
diff --git a/drivers/gpu/drm/bridge/dw_hdmi.c b/drivers/gpu/drm/bridge/dw_hdmi.c
index cecc46a..01c95a8 100644
--- a/drivers/gpu/drm/bridge/dw_hdmi.c
+++ b/drivers/gpu/drm/bridge/dw_hdmi.c
@@ -852,6 +852,9 @@ static int hdmi_phy_configure(struct dw_hdmi *hdmi, unsigned char prep,
dw_hdmi_phy_gen2_txpwron(hdmi, 1);
dw_hdmi_phy_gen2_pddq(hdmi, 0);
+ if (hdmi->dev_type == RK3288_HDMI)
+ dw_hdmi_phy_enable_spare(hdmi, 1);
+
/*Wait for PHY PLL lock */
msec = 5;
do {
diff --git a/drivers/gpu/drm/rockchip/Kconfig b/drivers/gpu/drm/rockchip/Kconfig
index ca9f085..6ebebe8 100644
--- a/drivers/gpu/drm/rockchip/Kconfig
+++ b/drivers/gpu/drm/rockchip/Kconfig
@@ -15,3 +15,13 @@ config DRM_ROCKCHIP
management to userspace. This driver does not provide
2D or 3D acceleration; acceleration is performed by other
IP found on the SoC.
+
+config ROCKCHIP_DW_HDMI
+ bool "Rockchip specific extensions for Synopsys DW HDMI"
+ depends on DRM_ROCKCHIP
+ select DRM_DW_HDMI
+ help
+ This selects support for Rockchip SoC specific extensions
+ for the Synopsys DesignWare HDMI driver. If you want to
+ enable HDMI on RK3288 based SoC, you should selet this
+ option.
diff --git a/drivers/gpu/drm/rockchip/Makefile b/drivers/gpu/drm/rockchip/Makefile
index 2cb0672..f3d8a19 100644
--- a/drivers/gpu/drm/rockchip/Makefile
+++ b/drivers/gpu/drm/rockchip/Makefile
@@ -5,4 +5,6 @@
rockchipdrm-y := rockchip_drm_drv.o rockchip_drm_fb.o rockchip_drm_fbdev.o \
rockchip_drm_gem.o
+obj-$(CONFIG_ROCKCHIP_DW_HDMI) += dw_hdmi-rockchip.o
+
obj-$(CONFIG_DRM_ROCKCHIP) += rockchipdrm.o rockchip_drm_vop.o
diff --git a/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c b/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c
new file mode 100644
index 0000000..d236faa
--- /dev/null
+++ b/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c
@@ -0,0 +1,341 @@
+/*
+ * 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/drm_encoder_slave.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_sym_term rockchip_sym_term[] = {
+ /*pixelclk symbol term*/
+ { 74250000, 0x8009, 0x0004 },
+ { 148500000, 0x8029, 0x0004 },
+ { 297000000, 0x8039, 0x0005 },
+ { ~0UL, 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 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_commit(struct drm_encoder *encoder)
+{
+ struct rockchip_hdmi *hdmi = to_rockchip_hdmi(encoder);
+ u32 val;
+ int mux;
+
+ mux = rockchip_drm_encoder_get_mux_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 void dw_hdmi_rockchip_encoder_prepare(struct drm_encoder *encoder)
+{
+ rockchip_drm_crtc_mode_config(encoder->crtc, DRM_MODE_CONNECTOR_HDMIA,
+ ROCKCHIP_OUT_MODE_AAAA);
+}
+
+static 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,
+ .prepare = dw_hdmi_rockchip_encoder_prepare,
+ .commit = dw_hdmi_rockchip_encoder_commit,
+ .disable = dw_hdmi_rockchip_encoder_disable,
+};
+
+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,
+ .sym_term = rockchip_sym_term,
+ .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;
+
+ 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 = 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);
+
+ return dw_hdmi_bind(dev, master, data, encoder, iores, irq, plat_data);
+}
+
+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 at rock-chips.com>");
+MODULE_AUTHOR("Yakir Yang <ykk at rock-chips.com>");
+MODULE_DESCRIPTION("Rockchip Specific DW-HDMI Driver Extension");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:dwhdmi-rockchip");
diff --git a/include/drm/bridge/dw_hdmi.h b/include/drm/bridge/dw_hdmi.h
index b64e58a..5a4f490 100644
--- a/include/drm/bridge/dw_hdmi.h
+++ b/include/drm/bridge/dw_hdmi.h
@@ -22,6 +22,7 @@ enum {
enum dw_hdmi_devtype {
IMX6Q_HDMI,
IMX6DL_HDMI,
+ RK3288_HDMI,
};
struct dw_hdmi_mpll_config {
--
1.9.1
More information about the Linux-rockchip
mailing list