lkml.org 
[lkml]   [2017]   [Sep]   [29]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH v2 4/7] drm/rockchip: dw_hdmi: add inno hdmi phy ops
Date
Because some RK chips use inno hdmi phy, such as RK3328, we add
inno hdmi phy ops.

Signed-off-by: Algea Cao <algea.cao@rock-chips.com>
---
drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c | 110 +++++++++++++++++++++++++++-
1 file changed, 107 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c b/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c
index 09c77f9..7658b2f 100644
--- a/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c
+++ b/drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c
@@ -12,7 +12,7 @@
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/regmap.h>
-
+#include <linux/phy/phy.h>
#include <drm/drm_of.h>
#include <drm/drmP.h>
#include <drm/drm_crtc_helper.h>
@@ -26,6 +26,18 @@
#define RK3288_HDMI_LCDC_SEL BIT(4)
#define RK3399_GRF_SOC_CON20 0x6250
#define RK3399_HDMI_LCDC_SEL BIT(6)
+#define RK3328_GRF_SOC_CON2 0x0408
+#define RK3328_DDC_MASK_EN ((3 << 10) | (3 << (10 + 16)))
+#define RK3328_GRF_SOC_CON3 0x040c
+#define RK3328_IO_CTRL_BY_HDMI (0xf0000000 | BIT(13) | BIT(12))
+#define RK3328_GRF_SOC_CON4 0x0410
+#define RK3328_IO_3V_DOMAIN (7 << (9 + 16))
+#define RK3328_IO_5V_DOMAIN ((7 << 9) | (3 << (9 + 16)))
+#define RK3328_HPD_3V (BIT(8 + 16) | BIT(13 + 16))
+#define RK3228_GRF_SOC_CON2 0x0408
+#define RK3228_DDC_MASK_EN ((3 << 13) | (3 << (13 + 16)))
+#define RK3228_GRF_SOC_CON6 0x0418
+#define RK3228_IO_3V_DOMAIN ((7 << 4) | (7 << (4 + 16)))

#define HIWORD_UPDATE(val, mask) (val | (mask) << 16)

@@ -49,10 +61,82 @@ struct rockchip_hdmi {
enum dw_hdmi_devtype dev_type;
struct clk *vpll_clk;
struct clk *grf_clk;
+ struct phy *phy;
};

#define to_rockchip_hdmi(x) container_of(x, struct rockchip_hdmi, x)

+static int
+inno_dw_hdmi_phy_init(struct dw_hdmi *dw_hdmi, void *data,
+ struct drm_display_mode *mode)
+{
+ struct rockchip_hdmi *hdmi = (struct rockchip_hdmi *)data;
+
+ return phy_power_on(hdmi->phy);
+}
+
+static void inno_dw_hdmi_phy_disable(struct dw_hdmi *dw_hdmi, void *data)
+{
+ struct rockchip_hdmi *hdmi = (struct rockchip_hdmi *)data;
+
+ phy_power_off(hdmi->phy);
+}
+
+static enum drm_connector_status
+inno_dw_hdmi_phy_read_hpd(struct dw_hdmi *dw_hdmi, void *data)
+{
+ struct rockchip_hdmi *hdmi = (struct rockchip_hdmi *)data;
+ enum drm_connector_status status;
+
+ status = dw_hdmi_phy_read_hpd(dw_hdmi, data);
+
+ if (hdmi->dev_type == RK3228_HDMI)
+ return status;
+
+ if (status == connector_status_connected)
+ regmap_write(hdmi->regmap,
+ RK3328_GRF_SOC_CON4,
+ RK3328_IO_5V_DOMAIN);
+ else
+ regmap_write(hdmi->regmap,
+ RK3328_GRF_SOC_CON4,
+ RK3328_IO_3V_DOMAIN);
+ return status;
+}
+
+static int inno_dw_hdmi_init(struct rockchip_hdmi *hdmi)
+{
+ int ret;
+
+ ret = clk_prepare_enable(hdmi->grf_clk);
+ if (ret < 0) {
+ dev_err(hdmi->dev, "failed to enable grfclk %d\n", ret);
+ return -EPROBE_DEFER;
+ }
+ if (hdmi->dev_type == RK3328_HDMI) {
+ /* Map HPD pin to 3V io */
+ regmap_write(hdmi->regmap,
+ RK3328_GRF_SOC_CON4,
+ RK3328_IO_3V_DOMAIN |
+ RK3328_HPD_3V);
+ /* Map ddc pin to 5V io */
+ regmap_write(hdmi->regmap,
+ RK3328_GRF_SOC_CON3,
+ RK3328_IO_CTRL_BY_HDMI);
+ regmap_write(hdmi->regmap,
+ RK3328_GRF_SOC_CON2,
+ RK3328_DDC_MASK_EN |
+ BIT(18));
+ } else {
+ regmap_write(hdmi->regmap, RK3228_GRF_SOC_CON2,
+ RK3228_DDC_MASK_EN);
+ regmap_write(hdmi->regmap, RK3228_GRF_SOC_CON6,
+ RK3228_IO_3V_DOMAIN);
+ }
+ clk_disable_unprepare(hdmi->grf_clk);
+ return 0;
+}
+
static const struct dw_hdmi_mpll_config rockchip_mpll_cfg[] = {
{
27000000, {
@@ -294,6 +378,12 @@ static const struct drm_encoder_helper_funcs dw_hdmi_rockchip_encoder_helper_fun
.atomic_check = dw_hdmi_rockchip_encoder_atomic_check,
};

+static const struct dw_hdmi_phy_ops inno_dw_hdmi_phy_ops = {
+ .init = inno_dw_hdmi_phy_init,
+ .disable = inno_dw_hdmi_phy_disable,
+ .read_hpd = inno_dw_hdmi_phy_read_hpd,
+};
+
static struct rockchip_hdmi_chip_data rk3288_chip_data = {
.lcdsel_grf_reg = RK3288_GRF_SOC_CON6,
.lcdsel_big = HIWORD_UPDATE(0, RK3288_HDMI_LCDC_SEL),
@@ -317,6 +407,8 @@ static struct rockchip_hdmi_chip_data rk3399_chip_data = {

static const struct dw_hdmi_plat_data rk3328_hdmi_drv_data = {
.mode_valid = dw_hdmi_rockchip_mode_valid,
+ .phy_ops = &inno_dw_hdmi_phy_ops,
+ .phy_name = "inno_dw_hdmi_phy2",
.dev_type = RK3328_HDMI,
};
static const struct dw_hdmi_plat_data rk3399_hdmi_drv_data = {
@@ -346,7 +438,7 @@ 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;
+ struct dw_hdmi_plat_data *plat_data;
const struct of_device_id *match;
struct drm_device *drm = data;
struct drm_encoder *encoder;
@@ -361,7 +453,7 @@ static int dw_hdmi_rockchip_bind(struct device *dev, struct device *master,
return -ENOMEM;

match = of_match_node(dw_hdmi_rockchip_dt_ids, pdev->dev.of_node);
- plat_data = match->data;
+ plat_data = (struct dw_hdmi_plat_data *)match->data;
hdmi->dev = &pdev->dev;
hdmi->chip_data = plat_data->phy_data;
hdmi->dev_type = plat_data->dev_type;
@@ -383,6 +475,18 @@ static int dw_hdmi_rockchip_bind(struct device *dev, struct device *master,
return ret;
}

+ if (hdmi->dev_type == RK3328_HDMI || hdmi->dev_type == RK3228_HDMI) {
+ hdmi->phy = devm_phy_get(dev, "hdmi_phy");
+ if (IS_ERR(hdmi->phy)) {
+ ret = PTR_ERR(hdmi->phy);
+ dev_err(dev, "failed to get phy: %d\n", ret);
+ return ret;
+ }
+ plat_data->phy_data = hdmi;
+ ret = inno_dw_hdmi_init(hdmi);
+ if (ret < 0)
+ 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);
--
2.7.4

\
 
 \ /
  Last update: 2017-09-30 03:46    [W:0.043 / U:5.112 seconds]
©2003-2017 Jasper Spaans. hosted at Digital OceanAdvertise on this site