[v10.1 PATCH 5/5] drm/rockchip: cdn-dp: add cdn DP support for rk3399
Mark yao
mark.yao at rock-chips.com
Thu Aug 11 19:06:40 PDT 2016
Hi Chris
Looks good for me
only tiny problem comment inline.
Thanks.
On 2016年08月11日 07:32, Chris Zhong wrote:
> Add support for cdn DP controller which is embedded in the rk3399
> SoCs. The DP is compliant with DisplayPort Specification,
> Version 1.3, This IP is compatible with the rockchip type-c PHY IP.
> There is a uCPU in DP controller, it need a firmware to work,
> please put the firmware file to /lib/firmware/rockchip/dptx.bin. The
> uCPU in charge of aux communication and link training, the host use
> mailbox to communicate with the ucpu.
> The dclk pin_pol of vop must not be invert for DP.
>
> Signed-off-by: Chris Zhong <zyw at rock-chips.com>
> Reviewed-by: Sean Paul <seanpaul at chromium.org>
> Acked-by: Mark Yao <mark.yao at rock-chips.com>
>
> ---
>
> Changes in v10.1:
> - support read sink count from DPCD
>
> Changes in v10:
> - control the grf_clk in DP
>
> Changes in v9:
> - do not need reset the phy before power_on
> - add a orientation information for set_capability
> - retry to read dpcd in 10 seconds
>
> Changes in v8:
> - optimization the err log
>
> Changes in v7:
> - support firmware standby when no dptx connection
> - optimization the calculation of tu size and valid symbol
>
> Changes in v6:
> - add a port struct
> - select SND_SOC_HDMI_CODEC
> - force reset the phy when hpd detected
>
> Changes in v5:
> - alphabetical order
> - do not use long, use u32 or u64
> - return MODE_CLOCK_HIGH when requested > actual
> - Optimized Coding Style
> - add a formula to get better tu size and symbol value.
> - modify according to Sean Paul's comments
> - fixed the fw_wait always 0
>
> Changes in v4:
> - use phy framework to control DP phy
> - support 2 phys
>
> Changes in v3:
> - use EXTCON_DISP_DP and EXTCON_DISP_DP_ALT cable to get dp port state.
> - reset spdif before config it
> - modify the firmware clk to 100Mhz
> - retry load firmware if fw file is requested too early
>
> Changes in v2:
> - Alphabetic order
> - remove excess error message
> - use define clk_rate
> - check all return value
> - remove dev_set_name(dp->dev, "cdn-dp");
> - use schedule_delayed_work
> - remove never-called functions
> - remove some unnecessary ()
>
> Changes in v1:
> - use extcon API
> - use hdmi-codec for the DP Asoc
> - do not initialize the "ret"
> - printk a err log when drm_of_encoder_active_endpoint_id
> - modify the dclk pin_pol to a single line
>
> drivers/gpu/drm/rockchip/Kconfig | 10 +
> drivers/gpu/drm/rockchip/Makefile | 1 +
> drivers/gpu/drm/rockchip/cdn-dp-core.c | 937 +++++++++++++++++++++++++++
> drivers/gpu/drm/rockchip/cdn-dp-core.h | 104 +++
> drivers/gpu/drm/rockchip/cdn-dp-reg.c | 959 ++++++++++++++++++++++++++++
> drivers/gpu/drm/rockchip/cdn-dp-reg.h | 482 ++++++++++++++
> drivers/gpu/drm/rockchip/rockchip_drm_vop.c | 13 +-
> drivers/gpu/drm/rockchip/rockchip_drm_vop.h | 9 +
> drivers/gpu/drm/rockchip/rockchip_vop_reg.c | 2 +
> 9 files changed, 2514 insertions(+), 3 deletions(-)
> create mode 100644 drivers/gpu/drm/rockchip/cdn-dp-core.c
> create mode 100644 drivers/gpu/drm/rockchip/cdn-dp-core.h
> create mode 100644 drivers/gpu/drm/rockchip/cdn-dp-reg.c
> create mode 100644 drivers/gpu/drm/rockchip/cdn-dp-reg.h
>
> diff --git a/drivers/gpu/drm/rockchip/Kconfig b/drivers/gpu/drm/rockchip/Kconfig
> index d30bdc3..20aaafe 100644
> --- a/drivers/gpu/drm/rockchip/Kconfig
> +++ b/drivers/gpu/drm/rockchip/Kconfig
> @@ -25,6 +25,16 @@ config ROCKCHIP_ANALOGIX_DP
> for the Analogix Core DP driver. If you want to enable DP
> on RK3288 based SoC, you should selet this option.
>
> +config ROCKCHIP_CDN_DP
> + tristate "Rockchip cdn DP"
> + depends on DRM_ROCKCHIP
> + select SND_SOC_HDMI_CODEC if SND_SOC
> + help
> + This selects support for Rockchip SoC specific extensions
> + for the cdn DP driver. If you want to enable Dp on
> + RK3399 based SoC, you should select this
> + option.
> +
> config ROCKCHIP_DW_HDMI
> tristate "Rockchip specific extensions for Synopsys DW HDMI"
> depends on DRM_ROCKCHIP
> diff --git a/drivers/gpu/drm/rockchip/Makefile b/drivers/gpu/drm/rockchip/Makefile
> index 05d0713..abdecd5 100644
> --- a/drivers/gpu/drm/rockchip/Makefile
> +++ b/drivers/gpu/drm/rockchip/Makefile
> @@ -7,6 +7,7 @@ rockchipdrm-y := rockchip_drm_drv.o rockchip_drm_fb.o \
> rockchipdrm-$(CONFIG_DRM_FBDEV_EMULATION) += rockchip_drm_fbdev.o
>
> obj-$(CONFIG_ROCKCHIP_ANALOGIX_DP) += analogix_dp-rockchip.o
> +obj-$(CONFIG_ROCKCHIP_CDN_DP) += cdn-dp-core.o cdn-dp-reg.o
> obj-$(CONFIG_ROCKCHIP_DW_HDMI) += dw_hdmi-rockchip.o
> obj-$(CONFIG_ROCKCHIP_DW_MIPI_DSI) += dw-mipi-dsi.o
> obj-$(CONFIG_ROCKCHIP_INNO_HDMI) += inno_hdmi.o
> diff --git a/drivers/gpu/drm/rockchip/cdn-dp-core.c b/drivers/gpu/drm/rockchip/cdn-dp-core.c
> new file mode 100644
> index 0000000..f9a5afb
> --- /dev/null
> +++ b/drivers/gpu/drm/rockchip/cdn-dp-core.c
> @@ -0,0 +1,937 @@
> +/*
> + * Copyright (C) Fuzhou Rockchip Electronics Co.Ltd
> + * Author: Chris Zhong <zyw at rock-chips.com>
> + *
> + * This software is licensed under the terms of the GNU General Public
> + * License version 2, as published by the Free Software Foundation, and
> + * may be copied, distributed, and modified under those terms.
> + *
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> + * GNU General Public License for more details.
> + */
> +
> +#include <drm/drmP.h>
> +#include <drm/drm_atomic_helper.h>
> +#include <drm/drm_crtc_helper.h>
> +#include <drm/drm_dp_helper.h>
> +#include <drm/drm_edid.h>
> +#include <drm/drm_of.h>
> +
> +#include <linux/clk.h>
> +#include <linux/component.h>
> +#include <linux/extcon.h>
> +#include <linux/firmware.h>
> +#include <linux/regmap.h>
> +#include <linux/reset.h>
> +
> +#include <linux/mfd/syscon.h>
> +#include <linux/phy/phy.h>
> +
> +#include <sound/hdmi-codec.h>
> +
> +#include "cdn-dp-core.h"
> +#include "cdn-dp-reg.h"
> +#include "rockchip_drm_vop.h"
> +
> +#define connector_to_dp(c) \
> + container_of(c, struct cdn_dp_device, connector)
> +
> +#define encoder_to_dp(c) \
> + container_of(c, struct cdn_dp_device, encoder)
> +
> +/* dp grf register offset */
> +#define GRF_SOC_CON9 0x6224
> +#define DP_SEL_VOP_LIT BIT(12)
> +#define GRF_SOC_CON26 0x6268
> +#define UPHY_SEL_BIT 3
> +#define UPHY_SEL_MASK BIT(19)
> +#define DPTX_HPD_SEL (3 << 12)
> +#define DPTX_HPD_DEL (2 << 12)
> +#define DPTX_HPD_SEL_MASK (3 << 28)
> +
> +#define MAX_FW_WAIT_SECS 64
> +#define CDN_DP_FIRMWARE "rockchip/dptx.bin"
> +
> +struct cdn_dp_data {
> + u8 max_phy;
> +};
> +
> +struct cdn_dp_data rk3399_cdn_dp = {
> + .max_phy = 2,
> +};
> +
> +static const struct of_device_id cdn_dp_dt_ids[] = {
> + { .compatible = "rockchip,rk3399-cdn-dp",
> + .data = (void *)&rk3399_cdn_dp },
> + {}
> +};
> +
> +MODULE_DEVICE_TABLE(of, cdn_dp_dt_ids);
> +
> +static int cdn_dp_grf_write(struct cdn_dp_device *dp,
> + unsigned int reg, unsigned int val)
> +{
> + int ret;
> +
> + ret = clk_prepare_enable(dp->grf_clk);
> + if (ret) {
> + dev_err(dp->dev, "Failed to prepare_enable grf clock\n");
> + return ret;
> + }
> +
> + ret = regmap_write(dp->grf, reg, val);
> + if (ret) {
> + dev_err(dp->dev, "Could not write to GRF: %d\n", ret);
> + return ret;
> + }
> +
> + clk_disable_unprepare(dp->grf_clk);
> +
> + return 0;
> +}
> +
> +static int cdn_dp_clk_enable(struct cdn_dp_device *dp)
> +{
> + int ret;
> + u32 rate;
> +
> + ret = clk_prepare_enable(dp->pclk);
> + if (ret < 0) {
> + dev_err(dp->dev, "cannot enable dp pclk %d\n", ret);
> + goto err_pclk;
> + }
> +
> + ret = clk_prepare_enable(dp->core_clk);
> + if (ret < 0) {
> + dev_err(dp->dev, "cannot enable core_clk %d\n", ret);
> + goto err_core_clk;
> + }
> +
> + rate = clk_get_rate(dp->core_clk);
> + if (rate < 0) {
> + dev_err(dp->dev, "get clk rate failed: %d\n", rate);
> + goto err_set_rate;
> + }
> +
> + cdn_dp_set_fw_clk(dp, rate);
> +
> + return 0;
> +
> +err_set_rate:
> + clk_disable_unprepare(dp->core_clk);
> +err_core_clk:
> + clk_disable_unprepare(dp->pclk);
> +err_pclk:
> + return ret;
> +}
> +
> +static enum drm_connector_status
> +cdn_dp_connector_detect(struct drm_connector *connector, bool force)
> +{
> + struct cdn_dp_device *dp = connector_to_dp(connector);
> +
> + return dp->hpd_status;
> +}
> +
> +static void cdn_dp_connector_destroy(struct drm_connector *connector)
> +{
> + drm_connector_unregister(connector);
> + drm_connector_cleanup(connector);
> +}
> +
> +static struct drm_connector_funcs cdn_dp_atomic_connector_funcs = {
> + .dpms = drm_atomic_helper_connector_dpms,
> + .detect = cdn_dp_connector_detect,
> + .destroy = cdn_dp_connector_destroy,
> + .fill_modes = drm_helper_probe_single_connector_modes,
> + .reset = drm_atomic_helper_connector_reset,
> + .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state,
> + .atomic_destroy_state = drm_atomic_helper_connector_destroy_state,
> +};
> +
> +static int cdn_dp_connector_get_modes(struct drm_connector *connector)
> +{
> + struct cdn_dp_device *dp = connector_to_dp(connector);
> + struct edid *edid;
> + int ret = 0;
> +
> + edid = drm_do_get_edid(connector, cdn_dp_get_edid_block, dp);
> + if (edid) {
> + dev_dbg(dp->dev, "got edid: width[%d] x height[%d]\n",
> + edid->width_cm, edid->height_cm);
> +
> + dp->sink_has_audio = drm_detect_monitor_audio(edid);
> + ret = drm_add_edid_modes(connector, edid);
> + if (ret) {
> + drm_mode_connector_update_edid_property(connector,
> + edid);
> + drm_edid_to_eld(connector, edid);
> + }
> + kfree(edid);
> + }
> +
> + return ret;
> +}
> +
> +static struct drm_encoder *
> + cdn_dp_connector_best_encoder(struct drm_connector *connector)
> +{
> + struct cdn_dp_device *dp = connector_to_dp(connector);
> +
> + return &dp->encoder;
> +}
I think cdn-dp have a 1:1 relationship between connectors and encoders,
Since the commit(c61b93f drm/atomic: Fix remaining places where
!funcs->best_encoder is valid),
the best_encoder ops can be removed.
> +
> +static int cdn_dp_connector_mode_valid(struct drm_connector *connector,
> + struct drm_display_mode *mode)
> +{
> + struct cdn_dp_device *dp = connector_to_dp(connector);
> + struct drm_display_info *display_info = &dp->connector.display_info;
> + u32 requested = mode->clock * display_info->bpc * 3 / 1000;
> + u32 actual, rate, sink_max, source_max = 0;
> + u8 lanes, i;
> +
> + /* find the running port */
> + for (i = 0; i < dp->ports; i++) {
> + if (dp->port[i]->phy_status) {
> + source_max = dp->port[i]->cap_lanes;
> + break;
> + }
> + }
> +
> + sink_max = drm_dp_max_lane_count(dp->dpcd);
> + lanes = min(source_max, sink_max);
> +
> + source_max = drm_dp_bw_code_to_link_rate(CDN_DP_MAX_LINK_RATE);
> + sink_max = drm_dp_max_link_rate(dp->dpcd);
> + rate = min(source_max, sink_max);
> +
> + actual = rate * lanes / 100;
> +
> + /* efficiency is about 0.8 */
> + actual = actual * 8 / 10;
> +
> + if (requested > actual) {
> + dev_dbg(dp->dev, "requested=%d, actual=%d, clock=%d\n",
> + requested, actual, mode->clock);
> + return MODE_CLOCK_HIGH;
> + }
> +
> + return MODE_OK;
> +}
> +
> +static struct drm_connector_helper_funcs cdn_dp_connector_helper_funcs = {
> + .get_modes = cdn_dp_connector_get_modes,
> + .best_encoder = cdn_dp_connector_best_encoder,
> + .mode_valid = cdn_dp_connector_mode_valid,
> +};
> +
> +static void cdn_dp_commit(struct drm_encoder *encoder)
> +{
> + struct cdn_dp_device *dp = encoder_to_dp(encoder);
> + int ret;
> +
> + ret = cdn_dp_training_start(dp);
> + if (ret)
> + return;
> +
> + ret = cdn_dp_get_training_status(dp);
> + if (ret)
> + return;
> +
> + dev_info(dp->dev, "rate:0x%x, lanes:%d\n",
> + dp->link.rate, dp->link.num_lanes);
> +
> + if (cdn_dp_set_video_status(dp, CONTROL_VIDEO_IDLE))
> + return;
> +
> + if (cdn_dp_config_video(dp))
> + return;
> +
> + if (cdn_dp_set_video_status(dp, CONTROL_VIDEO_VALID))
> + return;
> +
> + dp->dpms_mode = DRM_MODE_DPMS_ON;
> +}
> +
> +static void cdn_dp_encoder_mode_set(struct drm_encoder *encoder,
> + struct drm_display_mode *mode,
> + struct drm_display_mode *adjusted)
> +{
> + struct cdn_dp_device *dp = encoder_to_dp(encoder);
> + struct drm_display_info *display_info = &dp->connector.display_info;
> + struct rockchip_crtc_state *state;
> + struct video_info *video = &dp->video_info;
> + int ret, val;
> +
> + switch (display_info->bpc) {
> + case 16:
> + case 12:
> + case 10:
> + video->color_depth = 10;
> + break;
> + case 6:
> + video->color_depth = 6;
> + break;
> + default:
> + video->color_depth = 8;
> + break;
> + }
> +
> + video->color_fmt = PXL_RGB;
> +
> + video->v_sync_polarity = !!(mode->flags & DRM_MODE_FLAG_NVSYNC);
> + video->h_sync_polarity = !!(mode->flags & DRM_MODE_FLAG_NHSYNC);
> +
> + ret = drm_of_encoder_active_endpoint_id(dp->dev->of_node, encoder);
> + if (ret < 0) {
> + dev_err(dp->dev, "Could not get vop id, %d", ret);
> + return;
> + }
> +
> + dev_dbg(dp->dev, "vop %s output to cdn-dp\n", (ret) ? "LIT" : "BIG");
> + state = to_rockchip_crtc_state(encoder->crtc->state);
> + if (ret) {
> + val = DP_SEL_VOP_LIT | (DP_SEL_VOP_LIT << 16);
> + state->output_mode = ROCKCHIP_OUT_MODE_P888;
> + } else {
> + val = DP_SEL_VOP_LIT << 16;
> + state->output_mode = ROCKCHIP_OUT_MODE_AAAA;
> + }
> +
> + ret = cdn_dp_grf_write(dp, GRF_SOC_CON9, val);
> + if (ret)
> + return;
> +
> + memcpy(&dp->mode, adjusted, sizeof(*mode));
> +}
> +
> +static void cdn_dp_encoder_enable(struct drm_encoder *encoder)
> +{
> + struct cdn_dp_device *dp = encoder_to_dp(encoder);
> +
> + if (dp->dpms_mode != DRM_MODE_DPMS_ON)
> + cdn_dp_commit(encoder);
> +}
> +
> +static void cdn_dp_encoder_disable(struct drm_encoder *encoder)
> +{
> + struct cdn_dp_device *dp = encoder_to_dp(encoder);
> +
> + dp->dpms_mode = DRM_MODE_DPMS_OFF;
> +}
> +
> +static int
> +cdn_dp_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_DisplayPort;
> +
> + return 0;
> +}
> +
> +static struct drm_encoder_helper_funcs cdn_dp_encoder_helper_funcs = {
> + .mode_set = cdn_dp_encoder_mode_set,
> + .enable = cdn_dp_encoder_enable,
> + .disable = cdn_dp_encoder_disable,
> + .atomic_check = cdn_dp_encoder_atomic_check,
> +};
> +
> +static struct drm_encoder_funcs cdn_dp_encoder_funcs = {
> + .destroy = drm_encoder_cleanup,
> +};
> +
> +static int cdn_dp_firmware_init(struct cdn_dp_device *dp)
> +{
> + int ret;
> + const u32 *iram_data, *dram_data;
> + const struct firmware *fw = dp->fw;
> + const struct cdn_firmware_header *hdr;
> +
> + hdr = (struct cdn_firmware_header *)fw->data;
> + if (fw->size != le32_to_cpu(hdr->size_bytes)) {
> + dev_err(dp->dev, "firmware is invalid\n");
> + return -EINVAL;
> + }
> +
> + iram_data = (const u32 *)(fw->data + hdr->header_size);
> + dram_data = (const u32 *)(fw->data + hdr->header_size + hdr->iram_size);
> +
> + ret = cdn_dp_load_firmware(dp, iram_data, hdr->iram_size,
> + dram_data, hdr->dram_size);
> + if (ret)
> + return ret;
> +
> + ret = cdn_dp_set_firmware_active(dp, true);
> + if (ret) {
> + dev_err(dp->dev, "active ucpu failed: %d\n", ret);
> + return ret;
> + }
> +
> + return cdn_dp_event_config(dp);
> +}
> +
> +static int cdn_dp_init(struct cdn_dp_device *dp)
> +{
> + struct device *dev = dp->dev;
> + struct device_node *np = dev->of_node;
> + struct platform_device *pdev = to_platform_device(dev);
> + struct resource *res;
> + int ret;
> +
> + dp->grf = syscon_regmap_lookup_by_phandle(np, "rockchip,grf");
> + if (IS_ERR(dp->grf)) {
> + dev_err(dev, "cdn-dp needs rockchip,grf property\n");
> + return PTR_ERR(dp->grf);
> + }
> +
> + res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> + dp->regs = devm_ioremap_resource(dev, res);
> + if (IS_ERR(dp->regs)) {
> + dev_err(dev, "ioremap reg failed\n");
> + return PTR_ERR(dp->regs);
> + }
> +
> + dp->core_clk = devm_clk_get(dev, "core-clk");
> + if (IS_ERR(dp->core_clk)) {
> + dev_err(dev, "cannot get core_clk_dp\n");
> + return PTR_ERR(dp->core_clk);
> + }
> +
> + dp->pclk = devm_clk_get(dev, "pclk");
> + if (IS_ERR(dp->pclk)) {
> + dev_err(dev, "cannot get pclk\n");
> + return PTR_ERR(dp->pclk);
> + }
> +
> + dp->spdif_clk = devm_clk_get(dev, "spdif");
> + if (IS_ERR(dp->spdif_clk)) {
> + dev_err(dev, "cannot get spdif_clk\n");
> + return PTR_ERR(dp->spdif_clk);
> + }
> +
> + dp->grf_clk = devm_clk_get(dev, "grf");
> + if (IS_ERR(dp->grf_clk)) {
> + dev_err(dev, "cannot get grf clk\n");
> + return PTR_ERR(dp->grf_clk);
> + }
> +
> + dp->spdif_rst = devm_reset_control_get(dev, "spdif");
> + if (IS_ERR(dp->spdif_rst)) {
> + dev_err(dev, "no spdif reset control found\n");
> + return PTR_ERR(dp->spdif_rst);
> + }
> +
> + dp->dpms_mode = DRM_MODE_DPMS_OFF;
> +
> + ret = cdn_dp_clk_enable(dp);
> + if (ret < 0)
> + return ret;
> +
> + cdn_dp_clock_reset(dp);
> +
> + return 0;
> +}
> +
> +static int cdn_dp_audio_hw_params(struct device *dev, void *data,
> + struct hdmi_codec_daifmt *daifmt,
> + struct hdmi_codec_params *params)
> +{
> + struct cdn_dp_device *dp = dev_get_drvdata(dev);
> + struct audio_info audio = {
> + .sample_width = params->sample_width,
> + .sample_rate = params->sample_rate,
> + .channels = params->channels,
> + };
> + int ret;
> +
> + if (!dp->encoder.crtc)
> + return -ENODEV;
> +
> + switch (daifmt->fmt) {
> + case HDMI_I2S:
> + audio.format = AFMT_I2S;
> + break;
> + case HDMI_SPDIF:
> + audio.format = AFMT_SPDIF;
> + break;
> + default:
> + dev_err(dev, "%s: Invalid format %d\n", __func__, daifmt->fmt);
> + return -EINVAL;
> + }
> +
> + ret = cdn_dp_audio_config(dp, &audio);
> + if (!ret)
> + dp->audio_info = audio;
> +
> + return ret;
> +}
> +
> +static void cdn_dp_audio_shutdown(struct device *dev, void *data)
> +{
> + struct cdn_dp_device *dp = dev_get_drvdata(dev);
> + int ret;
> +
> + if (!dp->encoder.crtc)
> + return;
> +
> + ret = cdn_dp_audio_stop(dp, &dp->audio_info);
> + if (!ret)
> + dp->audio_info.format = AFMT_UNUSED;
> +}
> +
> +static int cdn_dp_audio_digital_mute(struct device *dev, void *data,
> + bool enable)
> +{
> + struct cdn_dp_device *dp = dev_get_drvdata(dev);
> +
> + if (!dp->encoder.crtc)
> + return -ENODEV;
> +
> + return cdn_dp_audio_mute(dp, enable);
> +}
> +
> +static int cdn_dp_audio_get_eld(struct device *dev, void *data,
> + u8 *buf, size_t len)
> +{
> + struct cdn_dp_device *dp = dev_get_drvdata(dev);
> + struct drm_mode_config *config = &dp->encoder.dev->mode_config;
> + struct drm_connector *connector;
> + int ret = -ENODEV;
> +
> + mutex_lock(&config->mutex);
> + list_for_each_entry(connector, &config->connector_list, head) {
> + if (&dp->encoder == connector->encoder) {
> + memcpy(buf, connector->eld,
> + min(sizeof(connector->eld), len));
> + ret = 0;
> + }
> + }
> + mutex_unlock(&config->mutex);
> +
> + return ret;
> +}
> +
> +static const struct hdmi_codec_ops audio_codec_ops = {
> + .hw_params = cdn_dp_audio_hw_params,
> + .audio_shutdown = cdn_dp_audio_shutdown,
> + .digital_mute = cdn_dp_audio_digital_mute,
> + .get_eld = cdn_dp_audio_get_eld,
> +};
> +
> +static int cdn_dp_audio_codec_init(struct cdn_dp_device *dp,
> + struct device *dev)
> +{
> + struct hdmi_codec_pdata codec_data = {
> + .i2s = 1,
> + .spdif = 1,
> + .ops = &audio_codec_ops,
> + .max_i2s_channels = 8,
> + };
> +
> + dp->audio_pdev = platform_device_register_data(
> + dev, HDMI_CODEC_DRV_NAME, PLATFORM_DEVID_AUTO,
> + &codec_data, sizeof(codec_data));
> +
> + return PTR_ERR_OR_ZERO(dp->audio_pdev);
> +}
> +
> +static int cdn_dp_get_cap_lanes(struct cdn_dp_device *dp,
> + struct extcon_dev *edev)
> +{
> + bool dfp, dptx;
> + u8 lanes;
> +
> + dfp = extcon_get_state(edev, EXTCON_USB_HOST);
> + dptx = extcon_get_state(edev, EXTCON_DISP_DP);
> +
> + if (dfp && dptx)
> + lanes = 2;
> + else if (dptx)
> + lanes = 4;
> + else
> + lanes = 0;
> +
> + return lanes;
> +}
> +
> +static int cdn_dp_pd_event(struct notifier_block *nb,
> + unsigned long event, void *priv)
> +{
> + struct cdn_dp_port *port;
> +
> + port = container_of(nb, struct cdn_dp_port, event_nb);
> +
> + schedule_delayed_work(&port->event_wq, 0);
> +
> + return 0;
> +}
> +
> +static void cdn_dp_pd_event_wq(struct work_struct *work)
> +{
> + struct cdn_dp_port *port = container_of(work, struct cdn_dp_port,
> + event_wq.work);
> + union extcon_property_value property;
> + struct cdn_dp_device *dp = port->dp;
> + u8 new_cap_lanes, sink_count, i;
> + int ret;
> +
> + new_cap_lanes = cdn_dp_get_cap_lanes(dp, port->extcon);
> +
> + if (new_cap_lanes == port->cap_lanes) {
> + dev_dbg(dp->dev, "lanes count does not change: %d\n",
> + new_cap_lanes);
> +
> + if (!new_cap_lanes)
> + return;
> +
> + /*
> + * Read the sink count from DPCD, if sink count become 0, this
> + * phy could be power off.
> + */
> + ret = cdn_dp_dpcd_read(dp, DP_SINK_COUNT,
> + &sink_count, 1);
ret = cdn_dp_dpcd_read(dp, DP_SINK_COUNT, &sink_count, 1);
this line is not over 80 characters, no need to become two lines.
> + if (ret || sink_count)
> + return;
> +
> + new_cap_lanes = 0;
> + }
> +
> + if (!new_cap_lanes) {
> + ret = phy_power_off(port->phy);
> + if (ret) {
> + dev_err(dp->dev, "phy power off failed: %d", ret);
> + return;
> + }
> + port->phy_status = false;
> + port->cap_lanes = 0;
> + for (i = 0; i < dp->ports; i++) {
> + if (dp->port[i]->phy_status)
> + return;
> + }
> +
> + ret = cdn_dp_grf_write(dp, GRF_SOC_CON26,
> + DPTX_HPD_SEL_MASK | DPTX_HPD_DEL);
> + if (ret)
> + return;
> +
> + dp->hpd_status = connector_status_disconnected;
> + drm_helper_hpd_irq_event(dp->drm_dev);
> + cdn_dp_set_firmware_active(dp, false);
> + return;
> + }
> +
> + /* if other phy is running, do not touch the hpd_status, and return */
> + for (i = 0; i < dp->ports; i++) {
> + if (dp->port[i]->phy_status) {
> + dev_warn(dp->dev, "busy, phy[%d] is running",
> + dp->port[i]->id);
> + return;
> + }
> + }
> +
> + if (!dp->fw_loaded) {
> + ret = request_firmware(&dp->fw, CDN_DP_FIRMWARE, dp->dev);
> + if (ret == -ENOENT && dp->fw_wait <= MAX_FW_WAIT_SECS) {
> + unsigned long time = msecs_to_jiffies(dp->fw_wait * HZ);
> +
> + /*
> + * If can not find the file, retry to load the firmware
> + * in several seconds, if still failed after 1 minute,
> + * give up.
> + */
> + schedule_delayed_work(&port->event_wq, time);
> + dp->fw_wait *= 2;
> + return;
> + } else if (ret) {
> + dev_err(dp->dev, "failed to request firmware: %d\n",
> + ret);
> + return;
> + }
> + } else {
> + cdn_dp_set_firmware_active(dp, true);
> + }
> +
> + ret = cdn_dp_grf_write(dp, GRF_SOC_CON26,
> + (port->id << UPHY_SEL_BIT) | UPHY_SEL_MASK);
> + if (ret)
> + goto err_phy;
> +
> + ret = phy_power_on(port->phy);
> + if (ret) {
> + dev_err(dp->dev, "phy power on failed: %d\n", ret);
> + goto err_phy;
> + }
> +
> + port->phy_status = true;
> +
> + if (!dp->fw_loaded) {
> + ret = cdn_dp_firmware_init(dp);
> + if (ret) {
> + dev_err(dp->dev, "firmware init failed: %d", ret);
> + goto err_firmware;
> + }
> + release_firmware(dp->fw);
> + dp->fw_loaded = 1;
> + }
> +
> + ret = cdn_dp_grf_write(dp, GRF_SOC_CON26,
> + DPTX_HPD_SEL_MASK | DPTX_HPD_SEL);
> + if (ret)
> + goto err_firmware;
> +
> + ret = cdn_dp_get_hpd_status(dp);
> + if (ret <= 0) {
> + if (!ret)
> + dev_err(dp->dev, "hpd does not exist\n");
> + goto err_firmware;
> + }
> +
> + ret = extcon_get_property(port->extcon, EXTCON_DISP_DP,
> + EXTCON_PROP_USB_TYPEC_POLARITY, &property);
> + if (ret) {
> + dev_err(dp->dev, "get property failed\n");
> + goto err_firmware;
> + }
> +
> + ret = cdn_dp_set_host_cap(dp, new_cap_lanes, property.intval);
> + if (ret) {
> + dev_err(dp->dev, "set host capabilities failed: %d\n", ret);
> + goto err_firmware;
> + }
> +
> + /*
> + * Native read with retry for link status and receiver capability reads
> + * for cases where the sink may still not be ready.
> + *
> + * Sinks are *supposed* to come up within 1ms from an off state, but
> + * some DOCKs need about 5 seconds to power up, so read the dpcd every
> + * 100ms, if can not get a good dpcd in 10 seconds, give up.
> + */
> + for (i = 0; i < 100; i++) {
> + ret = cdn_dp_dpcd_read(dp, 0x000, dp->dpcd,
> + DP_RECEIVER_CAP_SIZE);
> + if (!ret) {
> + dev_dbg(dp->dev, "get dpcd success!\n");
> +
> + /*
> + * Check sink count here. Then goto power off phy,
> + * if sink count is 0.
> + */
> + ret = cdn_dp_dpcd_read(dp, DP_SINK_COUNT,
> + &sink_count, 1);
> + if (ret)
> + continue;
> +
> + sink_count = DP_GET_SINK_COUNT(sink_count);
> + if (!sink_count)
> + goto err_firmware;
> +
> + port->cap_lanes = new_cap_lanes;
> + dp->hpd_status = connector_status_connected;
> + drm_helper_hpd_irq_event(dp->drm_dev);
> + return;
> + } else if (!extcon_get_state(port->extcon, EXTCON_DISP_DP)) {
> + break;
> + }
> + msleep(100);
> + }
> +
> + dev_err(dp->dev, "get dpcd failed!\n");
> +
> +err_firmware:
> + ret = phy_power_off(port->phy);
> + if (ret)
> + dev_err(dp->dev, "phy power off failed: %d", ret);
> + else
> + port->phy_status = false;
> +
> +err_phy:
> + if (dp->fw_loaded)
> + cdn_dp_set_firmware_active(dp, false);
> + else
> + release_firmware(dp->fw);
> +}
> +
> +static int cdn_dp_bind(struct device *dev, struct device *master, void *data)
> +{
> + struct cdn_dp_device *dp = dev_get_drvdata(dev);
> + struct drm_encoder *encoder;
> + struct drm_connector *connector;
> + struct cdn_dp_port *port;
> + struct drm_device *drm_dev = data;
> + int ret, i;
> +
> + ret = cdn_dp_init(dp);
> + if (ret < 0)
> + return ret;
> +
> + dp->drm_dev = drm_dev;
> + dp->hpd_status = connector_status_disconnected;
> + dp->fw_wait = 1;
> +
> + encoder = &dp->encoder;
> +
> + encoder->possible_crtcs = drm_of_find_possible_crtcs(drm_dev,
> + dev->of_node);
> + DRM_DEBUG_KMS("possible_crtcs = 0x%x\n", encoder->possible_crtcs);
> +
> + ret = drm_encoder_init(drm_dev, encoder, &cdn_dp_encoder_funcs,
> + DRM_MODE_ENCODER_TMDS, NULL);
> + if (ret) {
> + DRM_ERROR("failed to initialize encoder with drm\n");
> + return ret;
> + }
> +
> + drm_encoder_helper_add(encoder, &cdn_dp_encoder_helper_funcs);
> +
> + connector = &dp->connector;
> + connector->polled = DRM_CONNECTOR_POLL_HPD;
> + connector->dpms = DRM_MODE_DPMS_OFF;
> +
> + ret = drm_connector_init(drm_dev, connector,
> + &cdn_dp_atomic_connector_funcs,
> + DRM_MODE_CONNECTOR_DisplayPort);
> + if (ret) {
> + DRM_ERROR("failed to initialize connector with drm\n");
> + goto err_free_encoder;
> + }
> +
> + drm_connector_helper_add(connector, &cdn_dp_connector_helper_funcs);
> +
> + ret = drm_mode_connector_attach_encoder(connector, encoder);
> + if (ret) {
> + DRM_ERROR("failed to attach connector and encoder\n");
> + goto err_free_connector;
> + }
> +
> + cdn_dp_audio_codec_init(dp, dev);
> +
> + for (i = 0; i < dp->ports; i++) {
> + port = dp->port[i];
> +
> + port->event_nb.notifier_call = cdn_dp_pd_event;
> + INIT_DELAYED_WORK(&port->event_wq, cdn_dp_pd_event_wq);
> + ret = extcon_register_notifier(port->extcon, EXTCON_DISP_DP,
> + &port->event_nb);
> + if (ret) {
> + dev_err(dev, "register EXTCON_DISP_DP notifier err\n");
> + return ret;
> + }
> +
> + if (extcon_get_state(port->extcon, EXTCON_DISP_DP))
> + schedule_delayed_work(&port->event_wq, 0);
> + }
> +
> + return 0;
> +
> +err_free_connector:
> + drm_connector_cleanup(connector);
> +err_free_encoder:
> + drm_encoder_cleanup(encoder);
> + return ret;
> +}
> +
> +static void cdn_dp_unbind(struct device *dev, struct device *master, void *data)
> +{
> + struct cdn_dp_device *dp = dev_get_drvdata(dev);
> + struct drm_encoder *encoder = &dp->encoder;
> + struct drm_connector *connector = &dp->connector;
> + struct cdn_dp_port *port;
> + int i;
> +
> + platform_device_unregister(dp->audio_pdev);
> + cdn_dp_encoder_disable(encoder);
> + encoder->funcs->destroy(encoder);
> + connector->funcs->destroy(connector);
> +
> + for (i = 0; i < dp->ports; i++) {
> + port = dp->port[i];
> + extcon_unregister_notifier(port->extcon, EXTCON_DISP_DP,
> + &port->event_nb);
> + }
> +}
> +
> +static const struct component_ops cdn_dp_component_ops = {
> + .bind = cdn_dp_bind,
> + .unbind = cdn_dp_unbind,
> +};
> +
> +static int cdn_dp_probe(struct platform_device *pdev)
> +{
> + struct device *dev = &pdev->dev;
> + const struct of_device_id *match;
> + struct cdn_dp_data *dp_data;
> + struct cdn_dp_port *port;
> + struct cdn_dp_device *dp;
> + struct extcon_dev *extcon;
> + struct phy *phy;
> + int i;
> +
> + dp = devm_kzalloc(dev, sizeof(*dp), GFP_KERNEL);
> + if (!dp)
> + return -ENOMEM;
> + dp->dev = dev;
> +
> + match = of_match_node(cdn_dp_dt_ids, pdev->dev.of_node);
> + dp_data = (struct cdn_dp_data *)match->data;
> +
> + for (i = 0; i < dp_data->max_phy; i++) {
> + extcon = extcon_get_edev_by_phandle(dev, i);
> + phy = devm_of_phy_get_by_index(dev, dev->of_node, i);
> +
> + if (PTR_ERR(extcon) == -EPROBE_DEFER ||
> + PTR_ERR(phy) == -EPROBE_DEFER)
> + return -EPROBE_DEFER;
> +
> + if (IS_ERR(extcon) || IS_ERR(phy))
> + continue;
> +
> + port = devm_kzalloc(dev, sizeof(*port), GFP_KERNEL);
> + if (!dp)
> + return -ENOMEM;
> +
> + port->extcon = extcon;
> + port->phy = phy;
> + port->dp = dp;
> + port->id = i;
> + dp->port[dp->ports++] = port;
> + }
> +
> + if (!dp->ports) {
> + dev_err(dev, "missing extcon or phy\n");
> + return -EINVAL;
> + }
> +
> + dev_set_drvdata(dev, dp);
> +
> + return component_add(dev, &cdn_dp_component_ops);
> +}
> +
> +static int cdn_dp_remove(struct platform_device *pdev)
> +{
> + component_del(&pdev->dev, &cdn_dp_component_ops);
> +
> + return 0;
> +}
> +
> +static struct platform_driver cdn_dp_driver = {
> + .probe = cdn_dp_probe,
> + .remove = cdn_dp_remove,
> + .driver = {
> + .name = "cdn-dp",
> + .owner = THIS_MODULE,
> + .of_match_table = of_match_ptr(cdn_dp_dt_ids),
> + },
> +};
> +
> +module_platform_driver(cdn_dp_driver);
> +
> +MODULE_AUTHOR("Chris Zhong <zyw at rock-chips.com>");
> +MODULE_DESCRIPTION("cdn DP Driver");
> +MODULE_LICENSE("GPL v2");
> diff --git a/drivers/gpu/drm/rockchip/cdn-dp-core.h b/drivers/gpu/drm/rockchip/cdn-dp-core.h
> new file mode 100644
> index 0000000..0cf23db
> --- /dev/null
> +++ b/drivers/gpu/drm/rockchip/cdn-dp-core.h
> @@ -0,0 +1,104 @@
> +/*
> + * Copyright (C) 2016 Chris Zhong <zyw at rock-chips.com>
> + * Copyright (C) 2016 ROCKCHIP, Inc.
> + *
> + * 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.
> + *
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> + * GNU General Public License for more details.
> + */
> +
> +#ifndef _CDN_DP_CORE_H
> +#define _CDN_DP_CORE_H
> +
> +#include <drm/drmP.h>
> +#include <drm/drm_crtc_helper.h>
> +#include <drm/drm_dp_helper.h>
> +#include <drm/drm_panel.h>
> +#include "rockchip_drm_drv.h"
> +
> +#define MAX_PHY 2
> +
> +enum audio_format {
> + AFMT_I2S = 0,
> + AFMT_SPDIF = 1,
> + AFMT_UNUSED,
> +};
> +
> +struct audio_info {
> + enum audio_format format;
> + int sample_rate;
> + int channels;
> + int sample_width;
> +};
> +
> +enum vic_pxl_encoding_format {
> + PXL_RGB = 0x1,
> + YCBCR_4_4_4 = 0x2,
> + YCBCR_4_2_2 = 0x4,
> + YCBCR_4_2_0 = 0x8,
> + Y_ONLY = 0x10,
> +};
> +
> +struct video_info {
> + bool h_sync_polarity;
> + bool v_sync_polarity;
> + bool interlaced;
> + int color_depth;
> + enum vic_pxl_encoding_format color_fmt;
> +};
> +
> +struct cdn_firmware_header {
> + u32 size_bytes; /* size of the entire header+image(s) in bytes */
> + u32 header_size; /* size of just the header in bytes */
> + u32 iram_size; /* size of iram */
> + u32 dram_size; /* size of dram */
> +};
> +
> +struct cdn_dp_port {
> + struct cdn_dp_device *dp;
> + struct notifier_block event_nb;
> + struct delayed_work event_wq;
> + struct extcon_dev *extcon;
> + struct phy *phy;
> + u8 cap_lanes;
> + bool phy_status;
> + u8 id;
> +};
> +
> +struct cdn_dp_device {
> + struct device *dev;
> + struct drm_device *drm_dev;
> + struct drm_connector connector;
> + struct drm_encoder encoder;
> + struct drm_display_mode mode;
> + struct platform_device *audio_pdev;
> +
> + const struct firmware *fw; /* cdn dp firmware */
> + unsigned int fw_version; /* cdn fw version */
> + u32 fw_wait;
> + bool fw_loaded;
> + bool fw_actived;
> + void __iomem *regs;
> + struct regmap *grf;
> + struct clk *core_clk;
> + struct clk *pclk;
> + struct clk *spdif_clk;
> + struct clk *grf_clk;
> + struct reset_control *spdif_rst;
> + struct audio_info audio_info;
> + struct video_info video_info;
> + struct drm_dp_link link;
> + struct cdn_dp_port *port[MAX_PHY];
> + u8 ports;
> +
> + u8 dpcd[DP_RECEIVER_CAP_SIZE];
> + enum drm_connector_status hpd_status;
> + int dpms_mode;
> + bool sink_has_audio;
> +};
> +#endif /* _CDN_DP_CORE_H */
> diff --git a/drivers/gpu/drm/rockchip/cdn-dp-reg.c b/drivers/gpu/drm/rockchip/cdn-dp-reg.c
> new file mode 100644
> index 0000000..2ea702d
> --- /dev/null
> +++ b/drivers/gpu/drm/rockchip/cdn-dp-reg.c
> @@ -0,0 +1,959 @@
> +/*
> + * Copyright (C) Fuzhou Rockchip Electronics Co.Ltd
> + * Author: Chris Zhong <zyw at rock-chips.com>
> + *
> + * This software is licensed under the terms of the GNU General Public
> + * License version 2, as published by the Free Software Foundation, and
> + * may be copied, distributed, and modified under those terms.
> + *
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> + * GNU General Public License for more details.
> + */
> +
> +#include <linux/clk.h>
> +#include <linux/device.h>
> +#include <linux/delay.h>
> +#include <linux/io.h>
> +#include <linux/iopoll.h>
> +#include <linux/reset.h>
> +
> +#include "cdn-dp-core.h"
> +#include "cdn-dp-reg.h"
> +
> +#define CDN_DP_SPDIF_CLK 200000000
> +#define FW_ALIVE_TIMEOUT_US 1000000
> +#define MAILBOX_RETRY_US 1000
> +#define MAILBOX_TIMEOUT_US 5000000
> +#define LINK_TRAINING_RETRY_MS 20
> +#define LINK_TRAINING_TIMEOUT_MS 500
> +
> +void cdn_dp_set_fw_clk(struct cdn_dp_device *dp, u32 clk)
> +{
> + writel(clk / 1000000, dp->regs + SW_CLK_H);
> +}
> +
> +void cdn_dp_clock_reset(struct cdn_dp_device *dp)
> +{
> + u32 val;
> +
> + val = DPTX_FRMR_DATA_CLK_RSTN_EN |
> + DPTX_FRMR_DATA_CLK_EN |
> + DPTX_PHY_DATA_RSTN_EN |
> + DPTX_PHY_DATA_CLK_EN |
> + DPTX_PHY_CHAR_RSTN_EN |
> + DPTX_PHY_CHAR_CLK_EN |
> + SOURCE_AUX_SYS_CLK_RSTN_EN |
> + SOURCE_AUX_SYS_CLK_EN |
> + DPTX_SYS_CLK_RSTN_EN |
> + DPTX_SYS_CLK_EN |
> + CFG_DPTX_VIF_CLK_RSTN_EN |
> + CFG_DPTX_VIF_CLK_EN;
> + writel(val, dp->regs + SOURCE_DPTX_CAR);
> +
> + val = SOURCE_PHY_RSTN_EN | SOURCE_PHY_CLK_EN;
> + writel(val, dp->regs + SOURCE_PHY_CAR);
> +
> + val = SOURCE_PKT_SYS_RSTN_EN |
> + SOURCE_PKT_SYS_CLK_EN |
> + SOURCE_PKT_DATA_RSTN_EN |
> + SOURCE_PKT_DATA_CLK_EN;
> + writel(val, dp->regs + SOURCE_PKT_CAR);
> +
> + val = SPDIF_CDR_CLK_RSTN_EN |
> + SPDIF_CDR_CLK_EN |
> + SOURCE_AIF_SYS_RSTN_EN |
> + SOURCE_AIF_SYS_CLK_EN |
> + SOURCE_AIF_CLK_RSTN_EN |
> + SOURCE_AIF_CLK_EN;
> + writel(val, dp->regs + SOURCE_AIF_CAR);
> +
> + val = SOURCE_CIPHER_SYSTEM_CLK_RSTN_EN |
> + SOURCE_CIPHER_SYS_CLK_EN |
> + SOURCE_CIPHER_CHAR_CLK_RSTN_EN |
> + SOURCE_CIPHER_CHAR_CLK_EN;
> + writel(val, dp->regs + SOURCE_CIPHER_CAR);
> +
> + val = SOURCE_CRYPTO_SYS_CLK_RSTN_EN |
> + SOURCE_CRYPTO_SYS_CLK_EN;
> + writel(val, dp->regs + SOURCE_CRYPTO_CAR);
> +
> + val = ~(MAILBOX_INT_MASK_BIT | PIF_INT_MASK_BIT) & ALL_INT_MASK;
> + writel(val, dp->regs + APB_INT_MASK);
> +}
> +
> +static int cdn_dp_mailbox_read(struct cdn_dp_device *dp, bool force)
> +{
> + int val, ret;
> +
> + if (!dp->fw_actived && !force)
> + return -EPERM;
> +
> + ret = readx_poll_timeout(readl, dp->regs + MAILBOX_EMPTY_ADDR,
> + val, !val, MAILBOX_RETRY_US,
> + MAILBOX_TIMEOUT_US);
> + if (ret < 0)
> + return ret;
> +
> + return readl(dp->regs + MAILBOX0_RD_DATA) & 0xff;
> +}
> +
> +static int cdp_dp_mailbox_write(struct cdn_dp_device *dp, u8 val, bool force)
> +{
> + int ret, full;
> +
> + if (!dp->fw_actived && !force)
> + return -EPERM;
> +
> + ret = readx_poll_timeout(readl, dp->regs + MAILBOX_FULL_ADDR,
> + full, !full, MAILBOX_RETRY_US,
> + MAILBOX_TIMEOUT_US);
> + if (ret < 0)
> + return ret;
> +
> + writel(val, dp->regs + MAILBOX0_WR_DATA);
> +
> + return 0;
> +}
> +
> +static int cdn_dp_mailbox_validate_receive(struct cdn_dp_device *dp,
> + u8 module_id, u8 opcode,
> + u8 req_size)
> +{
> + u32 mbox_size, i;
> + u8 header[4];
> + int ret;
> +
> + /* read the header of the message */
> + for (i = 0; i < 4; i++) {
> + ret = cdn_dp_mailbox_read(dp, 0);
> + if (ret < 0)
> + return ret;
> +
> + header[i] = ret;
> + }
> +
> + mbox_size = (header[2] << 8) | header[3];
> +
> + if (opcode != header[0] || module_id != header[1] ||
> + req_size != mbox_size) {
> + /*
> + * If the message in mailbox is not what we want, we need to
> + * clear the mailbox by read.
> + */
> + for (i = 0; i < mbox_size; i++)
> + if (cdn_dp_mailbox_read(dp, 0) < 0)
> + break;
> +
> + return -EINVAL;
> + }
> +
> + return 0;
> +}
> +
> +static int cdn_dp_mailbox_read_receive(struct cdn_dp_device *dp,
> + u8 *buff, u8 buff_size)
> +{
> + u32 i;
> + int ret;
> +
> + for (i = 0; i < buff_size; i++) {
> + ret = cdn_dp_mailbox_read(dp, 0);
> + if (ret < 0)
> + return ret;
> +
> + buff[i] = ret;
> + }
> +
> + return 0;
> +}
> +
> +static int cdn_dp_mailbox_send(struct cdn_dp_device *dp, u8 module_id,
> + u8 opcode, u16 size, u8 *message)
> +{
> + u8 header[4];
> + int ret, i;
> +
> + header[0] = opcode;
> + header[1] = module_id;
> + header[2] = (size >> 8) & 0xff;
> + header[3] = size & 0xff;
> +
> + for (i = 0; i < 4; i++) {
> + ret = cdp_dp_mailbox_write(dp, header[i], 0);
> + if (ret)
> + return ret;
> + }
> +
> + for (i = 0; i < size; i++) {
> + ret = cdp_dp_mailbox_write(dp, message[i], 0);
> + if (ret)
> + return ret;
> + }
> +
> + return 0;
> +}
> +
> +static int cdn_dp_reg_write(struct cdn_dp_device *dp, u16 addr, u32 val)
> +{
> + u8 msg[6];
> +
> + msg[0] = (addr >> 8) & 0xff;
> + msg[1] = addr & 0xff;
> + msg[2] = (val >> 24) & 0xff;
> + msg[3] = (val >> 16) & 0xff;
> + msg[4] = (val >> 8) & 0xff;
> + msg[5] = val & 0xff;
> + return cdn_dp_mailbox_send(dp, MB_MODULE_ID_DP_TX, DPTX_WRITE_REGISTER,
> + sizeof(msg), msg);
> +}
> +
> +static int cdn_dp_reg_write_bit(struct cdn_dp_device *dp, u16 addr,
> + u8 start_bit, u8 bits_no, u32 val)
> +{
> + u8 field[8];
> +
> + field[0] = (addr >> 8) & 0xff;
> + field[1] = addr & 0xff;
> + field[2] = start_bit;
> + field[3] = bits_no;
> + field[4] = (val >> 24) & 0xff;
> + field[5] = (val >> 16) & 0xff;
> + field[6] = (val >> 8) & 0xff;
> + field[7] = val & 0xff;
> +
> + return cdn_dp_mailbox_send(dp, MB_MODULE_ID_DP_TX, DPTX_WRITE_FIELD,
> + sizeof(field), field);
> +}
> +
> +int cdn_dp_dpcd_read(struct cdn_dp_device *dp, u32 addr, u8 *data, u16 len)
> +{
> + u8 msg[5], reg[5];
> + int ret;
> +
> + msg[0] = (len >> 8) & 0xff;
> + msg[1] = len & 0xff;
> + msg[2] = (addr >> 16) & 0xff;
> + msg[3] = (addr >> 8) & 0xff;
> + msg[4] = addr & 0xff;
> + ret = cdn_dp_mailbox_send(dp, MB_MODULE_ID_DP_TX, DPTX_READ_DPCD,
> + sizeof(msg), msg);
> + if (ret)
> + goto err_dpcd_read;
> +
> + ret = cdn_dp_mailbox_validate_receive(dp, MB_MODULE_ID_DP_TX,
> + DPTX_READ_DPCD,
> + sizeof(reg) + len);
> + if (ret)
> + goto err_dpcd_read;
> +
> + ret = cdn_dp_mailbox_read_receive(dp, reg, sizeof(reg));
> + if (ret)
> + goto err_dpcd_read;
> +
> + ret = cdn_dp_mailbox_read_receive(dp, data, len);
> +
> +err_dpcd_read:
> + return ret;
> +}
> +
> +int cdn_dp_dpcd_write(struct cdn_dp_device *dp, u32 addr, u8 value)
> +{
> + u8 msg[6], reg[5];
> + int ret;
> +
> + msg[0] = 0;
> + msg[1] = 1;
> + msg[2] = (addr >> 16) & 0xff;
> + msg[3] = (addr >> 8) & 0xff;
> + msg[4] = addr & 0xff;
> + msg[5] = value;
> + ret = cdn_dp_mailbox_send(dp, MB_MODULE_ID_DP_TX, DPTX_WRITE_DPCD,
> + sizeof(msg), msg);
> + if (ret)
> + goto err_dpcd_write;
> +
> + ret = cdn_dp_mailbox_validate_receive(dp, MB_MODULE_ID_DP_TX,
> + DPTX_WRITE_DPCD, sizeof(reg));
> + if (ret)
> + goto err_dpcd_write;
> +
> + ret = cdn_dp_mailbox_read_receive(dp, reg, sizeof(reg));
> + if (ret)
> + goto err_dpcd_write;
> +
> + if (addr != (reg[2] << 16 | reg[3] << 8 | reg[4]))
> + ret = -EINVAL;
> +
> +err_dpcd_write:
> + if (ret)
> + dev_err(dp->dev, "dpcd write failed: %d\n", ret);
> + return ret;
> +}
> +
> +int cdn_dp_load_firmware(struct cdn_dp_device *dp, const u32 *i_mem,
> + u32 i_size, const u32 *d_mem, u32 d_size)
> +{
> + u32 reg;
> + int i, ret;
> +
> + /* reset ucpu before load firmware*/
> + writel(APB_IRAM_PATH | APB_DRAM_PATH | APB_XT_RESET,
> + dp->regs + APB_CTRL);
> +
> + for (i = 0; i < i_size; i += 4)
> + writel(*i_mem++, dp->regs + ADDR_IMEM + i);
> +
> + for (i = 0; i < d_size; i += 4)
> + writel(*d_mem++, dp->regs + ADDR_DMEM + i);
> +
> + /* un-reset ucpu */
> + writel(0, dp->regs + APB_CTRL);
> +
> + /* check the keep alive register to make sure fw working */
> + ret = readx_poll_timeout(readl, dp->regs + KEEP_ALIVE,
> + reg, reg, 2000, FW_ALIVE_TIMEOUT_US);
> + if (ret < 0) {
> + dev_err(dp->dev, "failed to loaded the FW reg = %x\n", reg);
> + return -EINVAL;
> + }
> +
> + reg = readl(dp->regs + VER_L) & 0xff;
> + dp->fw_version = reg;
> + reg = readl(dp->regs + VER_H) & 0xff;
> + dp->fw_version |= reg << 8;
> + reg = readl(dp->regs + VER_LIB_L_ADDR) & 0xff;
> + dp->fw_version |= reg << 16;
> + reg = readl(dp->regs + VER_LIB_H_ADDR) & 0xff;
> + dp->fw_version |= reg << 24;
> +
> + dev_dbg(dp->dev, "firmware version: %x\n", dp->fw_version);
> +
> + return 0;
> +}
> +
> +int cdn_dp_set_firmware_active(struct cdn_dp_device *dp, bool enable)
> +{
> + u8 msg[5];
> + int ret, i;
> +
> + msg[0] = GENERAL_MAIN_CONTROL;
> + msg[1] = MB_MODULE_ID_GENERAL;
> + msg[2] = 0;
> + msg[3] = 1;
> + msg[4] = enable ? FW_ACTIVE : FW_STANDBY;
> +
> + for (i = 0; i < sizeof(msg); i++) {
> + ret = cdp_dp_mailbox_write(dp, msg[i], 1);
> + if (ret)
> + goto err_set_firmware_active;
> + }
> +
> + /* read the firmware state */
> + for (i = 0; i < sizeof(msg); i++) {
> + ret = cdn_dp_mailbox_read(dp, 1);
> + if (ret < 0)
> + goto err_set_firmware_active;
> +
> + msg[i] = ret;
> + }
> +
> + dp->fw_actived = (msg[4] == FW_ACTIVE);
> + ret = 0;
> +
> +err_set_firmware_active:
> + if (ret < 0)
> + dev_err(dp->dev, "set firmware active failed\n");
> + return ret;
> +}
> +
> +int cdn_dp_set_host_cap(struct cdn_dp_device *dp, u8 lanes, bool flip)
> +{
> + u8 msg[8];
> + int ret;
> +
> + msg[0] = CDN_DP_MAX_LINK_RATE;
> + msg[1] = lanes;
> + msg[2] = VOLTAGE_LEVEL_2;
> + msg[3] = PRE_EMPHASIS_LEVEL_3;
> + msg[4] = PTS1 | PTS2 | PTS3 | PTS4;
> + msg[5] = FAST_LT_NOT_SUPPORT;
> + msg[6] = flip ? LANE_MAPPING_FLIPPED : LANE_MAPPING_NORMAL;
> + msg[7] = ENHANCED;
> +
> + ret = cdn_dp_mailbox_send(dp, MB_MODULE_ID_DP_TX,
> + DPTX_SET_HOST_CAPABILITIES,
> + sizeof(msg), msg);
> + if (ret)
> + goto err_set_host_cap;
> +
> + ret = cdn_dp_reg_write(dp, DP_AUX_SWAP_INVERSION_CONTROL,
> + AUX_HOST_INVERT);
> +
> +err_set_host_cap:
> + if (ret)
> + dev_err(dp->dev, "set host cap failed: %d\n", ret);
> + return ret;
> +}
> +
> +int cdn_dp_event_config(struct cdn_dp_device *dp)
> +{
> + u8 msg[5];
> + int ret;
> +
> + memset(msg, 0, sizeof(msg));
> +
> + msg[0] = DPTX_EVENT_ENABLE_HPD | DPTX_EVENT_ENABLE_TRAINING;
> +
> + ret = cdn_dp_mailbox_send(dp, MB_MODULE_ID_DP_TX, DPTX_ENABLE_EVENT,
> + sizeof(msg), msg);
> + if (ret)
> + dev_err(dp->dev, "set event config failed: %d\n", ret);
> +
> + return ret;
> +}
> +
> +u32 cdn_dp_get_event(struct cdn_dp_device *dp)
> +{
> + return readl(dp->regs + SW_EVENTS0);
> +}
> +
> +int cdn_dp_get_hpd_status(struct cdn_dp_device *dp)
> +{
> + u8 status;
> + int ret;
> +
> + ret = cdn_dp_mailbox_send(dp, MB_MODULE_ID_DP_TX, DPTX_HPD_STATE,
> + 0, NULL);
> + if (ret)
> + goto err_get_hpd;
> +
> + ret = cdn_dp_mailbox_validate_receive(dp, MB_MODULE_ID_DP_TX,
> + DPTX_HPD_STATE, sizeof(status));
> + if (ret)
> + goto err_get_hpd;
> +
> + ret = cdn_dp_mailbox_read_receive(dp, &status, sizeof(status));
> + if (ret)
> + goto err_get_hpd;
> +
> + return status;
> +
> +err_get_hpd:
> + dev_err(dp->dev, "get hpd status failed: %d\n", ret);
> + return ret;
> +}
> +
> +int cdn_dp_get_edid_block(void *data, u8 *edid,
> + unsigned int block, size_t length)
> +{
> + struct cdn_dp_device *dp = data;
> + u8 msg[2], reg[2];
> + int ret;
> +
> + msg[0] = block / 2;
> + msg[1] = block % 2;
> +
> + ret = cdn_dp_mailbox_send(dp, MB_MODULE_ID_DP_TX, DPTX_GET_EDID,
> + sizeof(msg), msg);
> + if (ret)
> + goto err_get_edid;
> +
> + ret = cdn_dp_mailbox_validate_receive(dp, MB_MODULE_ID_DP_TX,
> + DPTX_GET_EDID,
> + sizeof(reg) + length);
> + if (ret)
> + goto err_get_edid;
> +
> + ret = cdn_dp_mailbox_read_receive(dp, reg, sizeof(reg));
> + if (ret)
> + goto err_get_edid;
> +
> + ret = cdn_dp_mailbox_read_receive(dp, edid, length);
> + if (ret)
> + goto err_get_edid;
> +
> + if (reg[0] != length || reg[1] != block / 2)
> + ret = -EINVAL;
> +
> +err_get_edid:
> + if (ret)
> + dev_err(dp->dev, "get block[%d] edid failed: %d\n", block, ret);
> + return ret;
> +}
> +
> +int cdn_dp_training_start(struct cdn_dp_device *dp)
> +{
> + unsigned long timeout;
> + u8 msg, event[2];
> + int ret;
> +
> + msg = LINK_TRAINING_RUN;
> +
> + /* start training */
> + ret = cdn_dp_mailbox_send(dp, MB_MODULE_ID_DP_TX, DPTX_TRAINING_CONTROL,
> + sizeof(msg), &msg);
> + if (ret)
> + goto err_training_start;
> +
> + timeout = jiffies + msecs_to_jiffies(LINK_TRAINING_TIMEOUT_MS);
> + while (time_before(jiffies, timeout)) {
> + msleep(LINK_TRAINING_RETRY_MS);
> + ret = cdn_dp_mailbox_send(dp, MB_MODULE_ID_DP_TX,
> + DPTX_READ_EVENT, 0, NULL);
> + if (ret)
> + goto err_training_start;
> +
> + ret = cdn_dp_mailbox_validate_receive(dp, MB_MODULE_ID_DP_TX,
> + DPTX_READ_EVENT,
> + sizeof(event));
> + if (ret)
> + goto err_training_start;
> +
> + ret = cdn_dp_mailbox_read_receive(dp, event, sizeof(event));
> + if (ret)
> + goto err_training_start;
> +
> + if (event[1] & EQ_PHASE_FINISHED)
> + return 0;
> + }
> +
> + ret = -ETIMEDOUT;
> +
> +err_training_start:
> + dev_err(dp->dev, "training failed: %d\n", ret);
> + return ret;
> +}
> +
> +int cdn_dp_get_training_status(struct cdn_dp_device *dp)
> +{
> + u8 status[10];
> + int ret;
> +
> + ret = cdn_dp_mailbox_send(dp, MB_MODULE_ID_DP_TX, DPTX_READ_LINK_STAT,
> + 0, NULL);
> + if (ret)
> + goto err_get_training_status;
> +
> + ret = cdn_dp_mailbox_validate_receive(dp, MB_MODULE_ID_DP_TX,
> + DPTX_READ_LINK_STAT,
> + sizeof(status));
> + if (ret)
> + goto err_get_training_status;
> +
> + ret = cdn_dp_mailbox_read_receive(dp, status, sizeof(status));
> + if (ret)
> + goto err_get_training_status;
> +
> + dp->link.rate = status[0];
> + dp->link.num_lanes = status[1];
> +
> +err_get_training_status:
> + if (ret)
> + dev_err(dp->dev, "get training status failed: %d\n", ret);
> + return ret;
> +}
> +
> +int cdn_dp_set_video_status(struct cdn_dp_device *dp, int active)
> +{
> + u8 msg;
> + int ret;
> +
> + msg = !!active;
> +
> + ret = cdn_dp_mailbox_send(dp, MB_MODULE_ID_DP_TX, DPTX_SET_VIDEO,
> + sizeof(msg), &msg);
> + if (ret)
> + dev_err(dp->dev, "set video status failed: %d\n", ret);
> +
> + return ret;
> +}
> +
> +static int cdn_dp_get_msa_misc(struct video_info *video,
> + struct drm_display_mode *mode)
> +{
> + u32 msa_misc;
> + u8 val[2];
> +
> + switch (video->color_fmt) {
> + case PXL_RGB:
> + case Y_ONLY:
> + val[0] = 0;
> + break;
> + /* set YUV default color space conversion to BT601 */
> + case YCBCR_4_4_4:
> + val[0] = 6 + BT_601 * 8;
> + break;
> + case YCBCR_4_2_2:
> + val[0] = 5 + BT_601 * 8;
> + break;
> + case YCBCR_4_2_0:
> + val[0] = 5;
> + break;
> + };
> +
> + switch (video->color_depth) {
> + case 6:
> + val[1] = 0;
> + break;
> + case 8:
> + val[1] = 1;
> + break;
> + case 10:
> + val[1] = 2;
> + break;
> + case 12:
> + val[1] = 3;
> + break;
> + case 16:
> + val[1] = 4;
> + break;
> + };
> +
> + msa_misc = 2 * val[0] + 32 * val[1] +
> + ((video->color_fmt == Y_ONLY) ? (1 << 14) : 0);
> +
> + return msa_misc;
> +}
> +
> +int cdn_dp_config_video(struct cdn_dp_device *dp)
> +{
> + struct video_info *video = &dp->video_info;
> + struct drm_display_mode *mode = &dp->mode;
> + u64 symbol, tmp;
> + u32 val, link_rate;
> + u8 bit_per_pix, tu_size_reg = TU_SIZE;
> + int ret;
> +
> + bit_per_pix = (video->color_fmt == YCBCR_4_2_2) ?
> + (video->color_depth * 2) : (video->color_depth * 3);
> +
> + link_rate = drm_dp_bw_code_to_link_rate(dp->link.rate) / 1000;
> +
> + val = VIF_BYPASS_INTERLACE;
> + ret = cdn_dp_reg_write(dp, BND_HSYNC2VSYNC, val);
> + if (ret)
> + goto err_config_video;
> +
> + ret = cdn_dp_reg_write(dp, HSYNC2VSYNC_POL_CTRL, 0);
> + if (ret)
> + goto err_config_video;
> +
> + /*
> + * get a best tu_size and valid symbol:
> + * 1. chose Lclk freq(162Mhz, 270Mhz, 540Mhz), set TU to 32
> + * 2. calculate VS(valid symbol) = TU * Pclk * Bpp / (Lclk * Lanes)
> + * 3. if VS > *.85 or VS < *.1 or VS < 2 or TU < VS + 4, then set
> + * TU += 2 and repeat 2nd step.
> + */
> + do {
> + tu_size_reg += 2;
> + tmp = tu_size_reg * mode->clock * bit_per_pix;
> + tmp /= dp->link.num_lanes * link_rate * 8;
> + symbol = tmp / 1000;
> + } while ((symbol <= 1) || (tu_size_reg - symbol < 4) ||
> + (tmp % 1000 > 850) || (tmp % 1000 < 100));
> +
> + val = symbol + (tu_size_reg << 8);
> + ret = cdn_dp_reg_write(dp, DP_FRAMER_TU, val);
> + if (ret)
> + goto err_config_video;
> +
> + /* set the FIFO Buffer size */
> + val = ((mode->clock * (symbol + 1) / 1000) + link_rate);
> + val /= (dp->link.num_lanes * link_rate);
> + val = 8 * (symbol + 1) / bit_per_pix - val;
> + val += 2;
> + ret = cdn_dp_reg_write(dp, DP_VC_TABLE(15), val);
> +
> + switch (video->color_depth) {
> + case 6:
> + val = BCS_6;
> + break;
> + case 8:
> + val = BCS_8;
> + break;
> + case 10:
> + val = BCS_10;
> + break;
> + case 12:
> + val = BCS_12;
> + break;
> + case 16:
> + val = BCS_16;
> + break;
> + };
> +
> + val += video->color_fmt << 8;
> + ret = cdn_dp_reg_write(dp, DP_FRAMER_PXL_REPR, val);
> + if (ret)
> + goto err_config_video;
> +
> + val = video->h_sync_polarity ? DP_FRAMER_SP_HSP : 0;
> + val |= video->v_sync_polarity ? DP_FRAMER_SP_VSP : 0;
> + ret = cdn_dp_reg_write(dp, DP_FRAMER_SP, val);
> + if (ret)
> + goto err_config_video;
> +
> + val = (mode->hsync_start - mode->hdisplay) << 16;
> + val |= mode->htotal - mode->hsync_end;
> + ret = cdn_dp_reg_write(dp, DP_FRONT_BACK_PORCH, val);
> + if (ret)
> + goto err_config_video;
> +
> + val = mode->hdisplay * bit_per_pix / 8;
> + ret = cdn_dp_reg_write(dp, DP_BYTE_COUNT, val);
> + if (ret)
> + goto err_config_video;
> +
> + val = mode->htotal | ((mode->htotal - mode->hsync_start) << 16);
> + ret = cdn_dp_reg_write(dp, MSA_HORIZONTAL_0, val);
> + if (ret)
> + goto err_config_video;
> +
> + val = mode->hsync_end - mode->hsync_start;
> + val |= (mode->hdisplay << 16) | (video->h_sync_polarity << 15);
> + ret = cdn_dp_reg_write(dp, MSA_HORIZONTAL_1, val);
> + if (ret)
> + goto err_config_video;
> +
> + val = mode->vtotal;
> + val |= ((mode->vtotal - mode->vsync_start) << 16);
> + ret = cdn_dp_reg_write(dp, MSA_VERTICAL_0, val);
> + if (ret)
> + goto err_config_video;
> +
> + val = mode->vsync_end - mode->vsync_start;
> + val |= mode->vdisplay << 16 | (video->v_sync_polarity << 15);
> + ret = cdn_dp_reg_write(dp, MSA_VERTICAL_1, val);
> + if (ret)
> + goto err_config_video;
> +
> + val = cdn_dp_get_msa_misc(video, mode);
> + ret = cdn_dp_reg_write(dp, MSA_MISC, val);
> + if (ret)
> + goto err_config_video;
> +
> + ret = cdn_dp_reg_write(dp, STREAM_CONFIG, 1);
> + if (ret)
> + goto err_config_video;
> +
> + val = mode->hsync_end - mode->hsync_start;
> + val |= (mode->hdisplay << 16);
> + ret = cdn_dp_reg_write(dp, DP_HORIZONTAL, val);
> + if (ret)
> + goto err_config_video;
> +
> + val = mode->vtotal;
> + val -= (mode->vtotal - mode->vdisplay);
> + val |= (mode->vtotal - mode->vsync_start) << 16;
> + ret = cdn_dp_reg_write(dp, DP_VERTICAL_0, val);
> + if (ret)
> + goto err_config_video;
> +
> + val = mode->vtotal;
> + ret = cdn_dp_reg_write(dp, DP_VERTICAL_1, val);
> + if (ret)
> + goto err_config_video;
> +
> + val = 0;
> + ret = cdn_dp_reg_write_bit(dp, DP_VB_ID, 2, 1, val);
> +
> +err_config_video:
> + if (ret)
> + dev_err(dp->dev, "config video failed: %d\n", ret);
> + return ret;
> +}
> +
> +int cdn_dp_audio_stop(struct cdn_dp_device *dp, struct audio_info *audio)
> +{
> + u32 val;
> + int ret;
> +
> + ret = cdn_dp_reg_write(dp, AUDIO_PACK_CONTROL, 0);
> + if (ret) {
> + dev_err(dp->dev, "audio stop failed: %d\n", ret);
> + return ret;
> + }
> +
> + val = SPDIF_AVG_SEL | SPDIF_JITTER_BYPASS;
> + val |= SPDIF_FIFO_MID_RANGE(0xe0);
> + val |= SPDIF_JITTER_THRSH(0xe0);
> + val |= SPDIF_JITTER_AVG_WIN(7);
> + writel(val, dp->regs + SPDIF_CTRL_ADDR);
> +
> + /* clearn the audio config and reset */
> + writel(0, dp->regs + AUDIO_SRC_CNTL);
> + writel(0, dp->regs + AUDIO_SRC_CNFG);
> + writel(AUDIO_SW_RST, dp->regs + AUDIO_SRC_CNTL);
> + writel(0, dp->regs + AUDIO_SRC_CNTL);
> +
> + /* reset smpl2pckt component */
> + writel(0, dp->regs + SMPL2PKT_CNTL);
> + writel(AUDIO_SW_RST, dp->regs + SMPL2PKT_CNTL);
> + writel(0, dp->regs + SMPL2PKT_CNTL);
> +
> + /* reset FIFO */
> + writel(AUDIO_SW_RST, dp->regs + FIFO_CNTL);
> + writel(0, dp->regs + FIFO_CNTL);
> +
> + if (audio->format == AFMT_SPDIF)
> + clk_disable_unprepare(dp->spdif_clk);
> +
> + return 0;
> +}
> +
> +int cdn_dp_audio_mute(struct cdn_dp_device *dp, bool enable)
> +{
> + int ret;
> +
> + ret = cdn_dp_reg_write_bit(dp, DP_VB_ID, 4, 1, enable);
> + if (ret)
> + dev_err(dp->dev, "audio mute failed: %d\n", ret);
> +
> + return ret;
> +}
> +
> +static void cdn_dp_audio_config_i2s(struct cdn_dp_device *dp,
> + struct audio_info *audio)
> +{
> + int sub_pckt_num = 1, i2s_port_en_val = 0xf, i;
> + u32 val;
> +
> + if (audio->channels == 2) {
> + if (dp->link.num_lanes == 1)
> + sub_pckt_num = 2;
> + else
> + sub_pckt_num = 4;
> +
> + i2s_port_en_val = 1;
> + } else if (audio->channels == 4) {
> + i2s_port_en_val = 3;
> + }
> +
> + writel(0x0, dp->regs + SPDIF_CTRL_ADDR);
> +
> + writel(SYNC_WR_TO_CH_ZERO, dp->regs + FIFO_CNTL);
> +
> + val = MAX_NUM_CH(audio->channels);
> + val |= NUM_OF_I2S_PORTS(audio->channels);
> + val |= AUDIO_TYPE_LPCM;
> + val |= CFG_SUB_PCKT_NUM(sub_pckt_num);
> + writel(val, dp->regs + SMPL2PKT_CNFG);
> +
> + if (audio->sample_width == 16)
> + val = 0;
> + else if (audio->sample_width == 24)
> + val = 1 << 9;
> + else
> + val = 2 << 9;
> +
> + val |= AUDIO_CH_NUM(audio->channels);
> + val |= I2S_DEC_PORT_EN(i2s_port_en_val);
> + val |= TRANS_SMPL_WIDTH_32;
> + writel(val, dp->regs + AUDIO_SRC_CNFG);
> +
> + for (i = 0; i < (audio->channels + 1) / 2; i++) {
> + if (audio->sample_width == 16)
> + val = (0x08 << 8) | (0x08 << 20);
> + else if (audio->sample_width == 24)
> + val = (0x0b << 8) | (0x0b << 20);
> +
> + val |= ((2 * i) << 4) | ((2 * i + 1) << 16);
> + writel(val, dp->regs + STTS_BIT_CH(i));
> + }
> +
> + switch (audio->sample_rate) {
> + case 32000:
> + val = SAMPLING_FREQ(3) |
> + ORIGINAL_SAMP_FREQ(0xc);
> + break;
> + case 44100:
> + val = SAMPLING_FREQ(0) |
> + ORIGINAL_SAMP_FREQ(0xf);
> + break;
> + case 48000:
> + val = SAMPLING_FREQ(2) |
> + ORIGINAL_SAMP_FREQ(0xd);
> + break;
> + case 88200:
> + val = SAMPLING_FREQ(8) |
> + ORIGINAL_SAMP_FREQ(0x7);
> + break;
> + case 96000:
> + val = SAMPLING_FREQ(0xa) |
> + ORIGINAL_SAMP_FREQ(5);
> + break;
> + case 176400:
> + val = SAMPLING_FREQ(0xc) |
> + ORIGINAL_SAMP_FREQ(3);
> + break;
> + case 192000:
> + val = SAMPLING_FREQ(0xe) |
> + ORIGINAL_SAMP_FREQ(1);
> + break;
> + }
> + val |= 4;
> + writel(val, dp->regs + COM_CH_STTS_BITS);
> +
> + writel(SMPL2PKT_EN, dp->regs + SMPL2PKT_CNTL);
> + writel(I2S_DEC_START, dp->regs + AUDIO_SRC_CNTL);
> +}
> +
> +static void cdn_dp_audio_config_spdif(struct cdn_dp_device *dp)
> +{
> + u32 val;
> +
> + val = SPDIF_AVG_SEL | SPDIF_JITTER_BYPASS;
> + val |= SPDIF_FIFO_MID_RANGE(0xe0);
> + val |= SPDIF_JITTER_THRSH(0xe0);
> + val |= SPDIF_JITTER_AVG_WIN(7);
> + writel(val, dp->regs + SPDIF_CTRL_ADDR);
> +
> + writel(SYNC_WR_TO_CH_ZERO, dp->regs + FIFO_CNTL);
> +
> + val = MAX_NUM_CH(2) | AUDIO_TYPE_LPCM | CFG_SUB_PCKT_NUM(4);
> + writel(val, dp->regs + SMPL2PKT_CNFG);
> + writel(SMPL2PKT_EN, dp->regs + SMPL2PKT_CNTL);
> +
> + val = SPDIF_ENABLE | SPDIF_AVG_SEL | SPDIF_JITTER_BYPASS;
> + val |= SPDIF_FIFO_MID_RANGE(0xe0);
> + val |= SPDIF_JITTER_THRSH(0xe0);
> + val |= SPDIF_JITTER_AVG_WIN(7);
> + writel(val, dp->regs + SPDIF_CTRL_ADDR);
> +
> + clk_prepare_enable(dp->spdif_clk);
> + clk_set_rate(dp->spdif_clk, CDN_DP_SPDIF_CLK);
> +}
> +
> +int cdn_dp_audio_config(struct cdn_dp_device *dp, struct audio_info *audio)
> +{
> + int ret;
> +
> + /* reset the spdif clk before config */
> + if (audio->format == AFMT_SPDIF) {
> + reset_control_assert(dp->spdif_rst);
> + reset_control_deassert(dp->spdif_rst);
> + }
> +
> + ret = cdn_dp_reg_write(dp, CM_LANE_CTRL, LANE_REF_CYC);
> + if (ret)
> + goto err_audio_config;
> +
> + ret = cdn_dp_reg_write(dp, CM_CTRL, 0);
> + if (ret)
> + goto err_audio_config;
> +
> + if (audio->format == AFMT_I2S)
> + cdn_dp_audio_config_i2s(dp, audio);
> + else
> + cdn_dp_audio_config_spdif(dp);
> +
> + ret = cdn_dp_reg_write(dp, AUDIO_PACK_CONTROL, AUDIO_PACK_EN);
> +
> +err_audio_config:
> + if (ret)
> + dev_err(dp->dev, "audio config failed: %d\n", ret);
> + return ret;
> +}
> diff --git a/drivers/gpu/drm/rockchip/cdn-dp-reg.h b/drivers/gpu/drm/rockchip/cdn-dp-reg.h
> new file mode 100644
> index 0000000..6ac3674
> --- /dev/null
> +++ b/drivers/gpu/drm/rockchip/cdn-dp-reg.h
> @@ -0,0 +1,482 @@
> +/*
> + * Copyright (C) Fuzhou Rockchip Electronics Co.Ltd
> + * Author: Chris Zhong <zyw at rock-chips.com>
> + *
> + * This software is licensed under the terms of the GNU General Public
> + * License version 2, as published by the Free Software Foundation, and
> + * may be copied, distributed, and modified under those terms.
> + *
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> + * GNU General Public License for more details.
> + */
> +
> +#ifndef _CDN_DP_REG_H
> +#define _CDN_DP_REG_H
> +
> +#include <linux/bitops.h>
> +
> +#define ADDR_IMEM 0x10000
> +#define ADDR_DMEM 0x20000
> +
> +/* APB CFG addr */
> +#define APB_CTRL 0
> +#define XT_INT_CTRL 0x04
> +#define MAILBOX_FULL_ADDR 0x08
> +#define MAILBOX_EMPTY_ADDR 0x0c
> +#define MAILBOX0_WR_DATA 0x10
> +#define MAILBOX0_RD_DATA 0x14
> +#define KEEP_ALIVE 0x18
> +#define VER_L 0x1c
> +#define VER_H 0x20
> +#define VER_LIB_L_ADDR 0x24
> +#define VER_LIB_H_ADDR 0x28
> +#define SW_DEBUG_L 0x2c
> +#define SW_DEBUG_H 0x30
> +#define MAILBOX_INT_MASK 0x34
> +#define MAILBOX_INT_STATUS 0x38
> +#define SW_CLK_L 0x3c
> +#define SW_CLK_H 0x40
> +#define SW_EVENTS0 0x44
> +#define SW_EVENTS1 0x48
> +#define SW_EVENTS2 0x4c
> +#define SW_EVENTS3 0x50
> +#define XT_OCD_CTRL 0x60
> +#define APB_INT_MASK 0x6c
> +#define APB_STATUS_MASK 0x70
> +
> +/* audio decoder addr */
> +#define AUDIO_SRC_CNTL 0x30000
> +#define AUDIO_SRC_CNFG 0x30004
> +#define COM_CH_STTS_BITS 0x30008
> +#define STTS_BIT_CH(x) (0x3000c + ((x) << 2))
> +#define SPDIF_CTRL_ADDR 0x3004c
> +#define SPDIF_CH1_CS_3100_ADDR 0x30050
> +#define SPDIF_CH1_CS_6332_ADDR 0x30054
> +#define SPDIF_CH1_CS_9564_ADDR 0x30058
> +#define SPDIF_CH1_CS_12796_ADDR 0x3005c
> +#define SPDIF_CH1_CS_159128_ADDR 0x30060
> +#define SPDIF_CH1_CS_191160_ADDR 0x30064
> +#define SPDIF_CH2_CS_3100_ADDR 0x30068
> +#define SPDIF_CH2_CS_6332_ADDR 0x3006c
> +#define SPDIF_CH2_CS_9564_ADDR 0x30070
> +#define SPDIF_CH2_CS_12796_ADDR 0x30074
> +#define SPDIF_CH2_CS_159128_ADDR 0x30078
> +#define SPDIF_CH2_CS_191160_ADDR 0x3007c
> +#define SMPL2PKT_CNTL 0x30080
> +#define SMPL2PKT_CNFG 0x30084
> +#define FIFO_CNTL 0x30088
> +#define FIFO_STTS 0x3008c
> +
> +/* source pif addr */
> +#define SOURCE_PIF_WR_ADDR 0x30800
> +#define SOURCE_PIF_WR_REQ 0x30804
> +#define SOURCE_PIF_RD_ADDR 0x30808
> +#define SOURCE_PIF_RD_REQ 0x3080c
> +#define SOURCE_PIF_DATA_WR 0x30810
> +#define SOURCE_PIF_DATA_RD 0x30814
> +#define SOURCE_PIF_FIFO1_FLUSH 0x30818
> +#define SOURCE_PIF_FIFO2_FLUSH 0x3081c
> +#define SOURCE_PIF_STATUS 0x30820
> +#define SOURCE_PIF_INTERRUPT_SOURCE 0x30824
> +#define SOURCE_PIF_INTERRUPT_MASK 0x30828
> +#define SOURCE_PIF_PKT_ALLOC_REG 0x3082c
> +#define SOURCE_PIF_PKT_ALLOC_WR_EN 0x30830
> +#define SOURCE_PIF_SW_RESET 0x30834
> +
> +/* bellow registers need access by mailbox */
> +/* source car addr */
> +#define SOURCE_HDTX_CAR 0x0900
> +#define SOURCE_DPTX_CAR 0x0904
> +#define SOURCE_PHY_CAR 0x0908
> +#define SOURCE_CEC_CAR 0x090c
> +#define SOURCE_CBUS_CAR 0x0910
> +#define SOURCE_PKT_CAR 0x0918
> +#define SOURCE_AIF_CAR 0x091c
> +#define SOURCE_CIPHER_CAR 0x0920
> +#define SOURCE_CRYPTO_CAR 0x0924
> +
> +/* clock meters addr */
> +#define CM_CTRL 0x0a00
> +#define CM_I2S_CTRL 0x0a04
> +#define CM_SPDIF_CTRL 0x0a08
> +#define CM_VID_CTRL 0x0a0c
> +#define CM_LANE_CTRL 0x0a10
> +#define I2S_NM_STABLE 0x0a14
> +#define I2S_NCTS_STABLE 0x0a18
> +#define SPDIF_NM_STABLE 0x0a1c
> +#define SPDIF_NCTS_STABLE 0x0a20
> +#define NMVID_MEAS_STABLE 0x0a24
> +#define I2S_MEAS 0x0a40
> +#define SPDIF_MEAS 0x0a80
> +#define NMVID_MEAS 0x0ac0
> +
> +/* source vif addr */
> +#define BND_HSYNC2VSYNC 0x0b00
> +#define HSYNC2VSYNC_F1_L1 0x0b04
> +#define HSYNC2VSYNC_F2_L1 0x0b08
> +#define HSYNC2VSYNC_STATUS 0x0b0c
> +#define HSYNC2VSYNC_POL_CTRL 0x0b10
> +
> +/* dptx phy addr */
> +#define DP_TX_PHY_CONFIG_REG 0x2000
> +#define DP_TX_PHY_STATUS_REG 0x2004
> +#define DP_TX_PHY_SW_RESET 0x2008
> +#define DP_TX_PHY_SCRAMBLER_SEED 0x200c
> +#define DP_TX_PHY_TRAINING_01_04 0x2010
> +#define DP_TX_PHY_TRAINING_05_08 0x2014
> +#define DP_TX_PHY_TRAINING_09_10 0x2018
> +#define TEST_COR 0x23fc
> +
> +/* dptx hpd addr */
> +#define HPD_IRQ_DET_MIN_TIMER 0x2100
> +#define HPD_IRQ_DET_MAX_TIMER 0x2104
> +#define HPD_UNPLGED_DET_MIN_TIMER 0x2108
> +#define HPD_STABLE_TIMER 0x210c
> +#define HPD_FILTER_TIMER 0x2110
> +#define HPD_EVENT_MASK 0x211c
> +#define HPD_EVENT_DET 0x2120
> +
> +/* dpyx framer addr */
> +#define DP_FRAMER_GLOBAL_CONFIG 0x2200
> +#define DP_SW_RESET 0x2204
> +#define DP_FRAMER_TU 0x2208
> +#define DP_FRAMER_PXL_REPR 0x220c
> +#define DP_FRAMER_SP 0x2210
> +#define AUDIO_PACK_CONTROL 0x2214
> +#define DP_VC_TABLE(x) (0x2218 + ((x) << 2))
> +#define DP_VB_ID 0x2258
> +#define DP_MTPH_LVP_CONTROL 0x225c
> +#define DP_MTPH_SYMBOL_VALUES 0x2260
> +#define DP_MTPH_ECF_CONTROL 0x2264
> +#define DP_MTPH_ACT_CONTROL 0x2268
> +#define DP_MTPH_STATUS 0x226c
> +#define DP_INTERRUPT_SOURCE 0x2270
> +#define DP_INTERRUPT_MASK 0x2274
> +#define DP_FRONT_BACK_PORCH 0x2278
> +#define DP_BYTE_COUNT 0x227c
> +
> +/* dptx stream addr */
> +#define MSA_HORIZONTAL_0 0x2280
> +#define MSA_HORIZONTAL_1 0x2284
> +#define MSA_VERTICAL_0 0x2288
> +#define MSA_VERTICAL_1 0x228c
> +#define MSA_MISC 0x2290
> +#define STREAM_CONFIG 0x2294
> +#define AUDIO_PACK_STATUS 0x2298
> +#define VIF_STATUS 0x229c
> +#define PCK_STUFF_STATUS_0 0x22a0
> +#define PCK_STUFF_STATUS_1 0x22a4
> +#define INFO_PACK_STATUS 0x22a8
> +#define RATE_GOVERNOR_STATUS 0x22ac
> +#define DP_HORIZONTAL 0x22b0
> +#define DP_VERTICAL_0 0x22b4
> +#define DP_VERTICAL_1 0x22b8
> +#define DP_BLOCK_SDP 0x22bc
> +
> +/* dptx glbl addr */
> +#define DPTX_LANE_EN 0x2300
> +#define DPTX_ENHNCD 0x2304
> +#define DPTX_INT_MASK 0x2308
> +#define DPTX_INT_STATUS 0x230c
> +
> +/* dp aux addr */
> +#define DP_AUX_HOST_CONTROL 0x2800
> +#define DP_AUX_INTERRUPT_SOURCE 0x2804
> +#define DP_AUX_INTERRUPT_MASK 0x2808
> +#define DP_AUX_SWAP_INVERSION_CONTROL 0x280c
> +#define DP_AUX_SEND_NACK_TRANSACTION 0x2810
> +#define DP_AUX_CLEAR_RX 0x2814
> +#define DP_AUX_CLEAR_TX 0x2818
> +#define DP_AUX_TIMER_STOP 0x281c
> +#define DP_AUX_TIMER_CLEAR 0x2820
> +#define DP_AUX_RESET_SW 0x2824
> +#define DP_AUX_DIVIDE_2M 0x2828
> +#define DP_AUX_TX_PREACHARGE_LENGTH 0x282c
> +#define DP_AUX_FREQUENCY_1M_MAX 0x2830
> +#define DP_AUX_FREQUENCY_1M_MIN 0x2834
> +#define DP_AUX_RX_PRE_MIN 0x2838
> +#define DP_AUX_RX_PRE_MAX 0x283c
> +#define DP_AUX_TIMER_PRESET 0x2840
> +#define DP_AUX_NACK_FORMAT 0x2844
> +#define DP_AUX_TX_DATA 0x2848
> +#define DP_AUX_RX_DATA 0x284c
> +#define DP_AUX_TX_STATUS 0x2850
> +#define DP_AUX_RX_STATUS 0x2854
> +#define DP_AUX_RX_CYCLE_COUNTER 0x2858
> +#define DP_AUX_MAIN_STATES 0x285c
> +#define DP_AUX_MAIN_TIMER 0x2860
> +#define DP_AUX_AFE_OUT 0x2864
> +
> +/* crypto addr */
> +#define CRYPTO_HDCP_REVISION 0x5800
> +#define HDCP_CRYPTO_CONFIG 0x5804
> +#define CRYPTO_INTERRUPT_SOURCE 0x5808
> +#define CRYPTO_INTERRUPT_MASK 0x580c
> +#define CRYPTO22_CONFIG 0x5818
> +#define CRYPTO22_STATUS 0x581c
> +#define SHA_256_DATA_IN 0x583c
> +#define SHA_256_DATA_OUT_(x) (0x5850 + ((x) << 2))
> +#define AES_32_KEY_(x) (0x5870 + ((x) << 2))
> +#define AES_32_DATA_IN 0x5880
> +#define AES_32_DATA_OUT_(x) (0x5884 + ((x) << 2))
> +#define CRYPTO14_CONFIG 0x58a0
> +#define CRYPTO14_STATUS 0x58a4
> +#define CRYPTO14_PRNM_OUT 0x58a8
> +#define CRYPTO14_KM_0 0x58ac
> +#define CRYPTO14_KM_1 0x58b0
> +#define CRYPTO14_AN_0 0x58b4
> +#define CRYPTO14_AN_1 0x58b8
> +#define CRYPTO14_YOUR_KSV_0 0x58bc
> +#define CRYPTO14_YOUR_KSV_1 0x58c0
> +#define CRYPTO14_MI_0 0x58c4
> +#define CRYPTO14_MI_1 0x58c8
> +#define CRYPTO14_TI_0 0x58cc
> +#define CRYPTO14_KI_0 0x58d0
> +#define CRYPTO14_KI_1 0x58d4
> +#define CRYPTO14_BLOCKS_NUM 0x58d8
> +#define CRYPTO14_KEY_MEM_DATA_0 0x58dc
> +#define CRYPTO14_KEY_MEM_DATA_1 0x58e0
> +#define CRYPTO14_SHA1_MSG_DATA 0x58e4
> +#define CRYPTO14_SHA1_V_VALUE_(x) (0x58e8 + ((x) << 2))
> +#define TRNG_CTRL 0x58fc
> +#define TRNG_DATA_RDY 0x5900
> +#define TRNG_DATA 0x5904
> +
> +/* cipher addr */
> +#define HDCP_REVISION 0x60000
> +#define INTERRUPT_SOURCE 0x60004
> +#define INTERRUPT_MASK 0x60008
> +#define HDCP_CIPHER_CONFIG 0x6000c
> +#define AES_128_KEY_0 0x60010
> +#define AES_128_KEY_1 0x60014
> +#define AES_128_KEY_2 0x60018
> +#define AES_128_KEY_3 0x6001c
> +#define AES_128_RANDOM_0 0x60020
> +#define AES_128_RANDOM_1 0x60024
> +#define CIPHER14_KM_0 0x60028
> +#define CIPHER14_KM_1 0x6002c
> +#define CIPHER14_STATUS 0x60030
> +#define CIPHER14_RI_PJ_STATUS 0x60034
> +#define CIPHER_MODE 0x60038
> +#define CIPHER14_AN_0 0x6003c
> +#define CIPHER14_AN_1 0x60040
> +#define CIPHER22_AUTH 0x60044
> +#define CIPHER14_R0_DP_STATUS 0x60048
> +#define CIPHER14_BOOTSTRAP 0x6004c
> +
> +#define DPTX_FRMR_DATA_CLK_RSTN_EN BIT(11)
> +#define DPTX_FRMR_DATA_CLK_EN BIT(10)
> +#define DPTX_PHY_DATA_RSTN_EN BIT(9)
> +#define DPTX_PHY_DATA_CLK_EN BIT(8)
> +#define DPTX_PHY_CHAR_RSTN_EN BIT(7)
> +#define DPTX_PHY_CHAR_CLK_EN BIT(6)
> +#define SOURCE_AUX_SYS_CLK_RSTN_EN BIT(5)
> +#define SOURCE_AUX_SYS_CLK_EN BIT(4)
> +#define DPTX_SYS_CLK_RSTN_EN BIT(3)
> +#define DPTX_SYS_CLK_EN BIT(2)
> +#define CFG_DPTX_VIF_CLK_RSTN_EN BIT(1)
> +#define CFG_DPTX_VIF_CLK_EN BIT(0)
> +
> +#define SOURCE_PHY_RSTN_EN BIT(1)
> +#define SOURCE_PHY_CLK_EN BIT(0)
> +
> +#define SOURCE_PKT_SYS_RSTN_EN BIT(3)
> +#define SOURCE_PKT_SYS_CLK_EN BIT(2)
> +#define SOURCE_PKT_DATA_RSTN_EN BIT(1)
> +#define SOURCE_PKT_DATA_CLK_EN BIT(0)
> +
> +#define SPDIF_CDR_CLK_RSTN_EN BIT(5)
> +#define SPDIF_CDR_CLK_EN BIT(4)
> +#define SOURCE_AIF_SYS_RSTN_EN BIT(3)
> +#define SOURCE_AIF_SYS_CLK_EN BIT(2)
> +#define SOURCE_AIF_CLK_RSTN_EN BIT(1)
> +#define SOURCE_AIF_CLK_EN BIT(0)
> +
> +#define SOURCE_CIPHER_SYSTEM_CLK_RSTN_EN BIT(3)
> +#define SOURCE_CIPHER_SYS_CLK_EN BIT(2)
> +#define SOURCE_CIPHER_CHAR_CLK_RSTN_EN BIT(1)
> +#define SOURCE_CIPHER_CHAR_CLK_EN BIT(0)
> +
> +#define SOURCE_CRYPTO_SYS_CLK_RSTN_EN BIT(1)
> +#define SOURCE_CRYPTO_SYS_CLK_EN BIT(0)
> +
> +#define APB_IRAM_PATH BIT(2)
> +#define APB_DRAM_PATH BIT(1)
> +#define APB_XT_RESET BIT(0)
> +
> +#define MAILBOX_INT_MASK_BIT BIT(1)
> +#define PIF_INT_MASK_BIT BIT(0)
> +#define ALL_INT_MASK 3
> +
> +/* mailbox */
> +#define MB_OPCODE_ID 0
> +#define MB_MODULE_ID 1
> +#define MB_SIZE_MSB_ID 2
> +#define MB_SIZE_LSB_ID 3
> +#define MB_DATA_ID 4
> +
> +#define MB_MODULE_ID_DP_TX 0x01
> +#define MB_MODULE_ID_HDCP_TX 0x07
> +#define MB_MODULE_ID_HDCP_RX 0x08
> +#define MB_MODULE_ID_HDCP_GENERAL 0x09
> +#define MB_MODULE_ID_GENERAL 0x0a
> +
> +/* general opcode */
> +#define GENERAL_MAIN_CONTROL 0x01
> +#define GENERAL_TEST_ECHO 0x02
> +#define GENERAL_BUS_SETTINGS 0x03
> +#define GENERAL_TEST_ACCESS 0x04
> +
> +#define DPTX_SET_POWER_MNG 0x00
> +#define DPTX_SET_HOST_CAPABILITIES 0x01
> +#define DPTX_GET_EDID 0x02
> +#define DPTX_READ_DPCD 0x03
> +#define DPTX_WRITE_DPCD 0x04
> +#define DPTX_ENABLE_EVENT 0x05
> +#define DPTX_WRITE_REGISTER 0x06
> +#define DPTX_READ_REGISTER 0x07
> +#define DPTX_WRITE_FIELD 0x08
> +#define DPTX_TRAINING_CONTROL 0x09
> +#define DPTX_READ_EVENT 0x0a
> +#define DPTX_READ_LINK_STAT 0x0b
> +#define DPTX_SET_VIDEO 0x0c
> +#define DPTX_SET_AUDIO 0x0d
> +#define DPTX_GET_LAST_AUX_STAUS 0x0e
> +#define DPTX_SET_LINK_BREAK_POINT 0x0f
> +#define DPTX_FORCE_LANES 0x10
> +#define DPTX_HPD_STATE 0x11
> +
> +#define FW_STANDBY 0
> +#define FW_ACTIVE 1
> +
> +#define DPTX_EVENT_ENABLE_HPD BIT(0)
> +#define DPTX_EVENT_ENABLE_TRAINING BIT(1)
> +
> +#define LINK_TRAINING_NOT_ACTIVE 0
> +#define LINK_TRAINING_RUN 1
> +#define LINK_TRAINING_RESTART 2
> +
> +#define CONTROL_VIDEO_IDLE 0
> +#define CONTROL_VIDEO_VALID 1
> +
> +#define VIF_BYPASS_INTERLACE BIT(13)
> +#define INTERLACE_FMT_DET BIT(12)
> +#define INTERLACE_DTCT_WIN 0x20
> +
> +#define DP_FRAMER_SP_INTERLACE_EN BIT(2)
> +#define DP_FRAMER_SP_HSP BIT(1)
> +#define DP_FRAMER_SP_VSP BIT(0)
> +
> +/* capability */
> +#define AUX_HOST_INVERT 3
> +#define FAST_LT_SUPPORT 1
> +#define FAST_LT_NOT_SUPPORT 0
> +#define LANE_MAPPING_NORMAL 0x1b
> +#define LANE_MAPPING_FLIPPED 0xe4
> +#define ENHANCED 1
> +
> +#define FULL_LT_STARTED BIT(0)
> +#define FASE_LT_STARTED BIT(1)
> +#define CLK_RECOVERY_FINISHED BIT(2)
> +#define EQ_PHASE_FINISHED BIT(3)
> +#define FASE_LT_START_FINISHED BIT(4)
> +#define CLK_RECOVERY_FAILED BIT(5)
> +#define EQ_PHASE_FAILED BIT(6)
> +#define FASE_LT_FAILED BIT(7)
> +
> +#define DPTX_HPD_EVENT BIT(0)
> +#define DPTX_TRAINING_EVENT BIT(1)
> +#define HDCP_TX_STATUS_EVENT BIT(4)
> +#define HDCP2_TX_IS_KM_STORED_EVENT BIT(5)
> +#define HDCP2_TX_STORE_KM_EVENT BIT(6)
> +#define HDCP_TX_IS_RECEIVER_ID_VALID_EVENT BIT(7)
> +
> +#define TU_SIZE 30
> +#define CDN_DP_MAX_LINK_RATE DP_LINK_BW_5_4
> +
> +/* audio */
> +#define AUDIO_PACK_EN BIT(8)
> +#define SAMPLING_FREQ(x) (((x) & 0xf) << 16)
> +#define ORIGINAL_SAMP_FREQ(x) (((x) & 0xf) << 24)
> +#define SYNC_WR_TO_CH_ZERO BIT(1)
> +#define I2S_DEC_START BIT(1)
> +#define AUDIO_SW_RST BIT(0)
> +#define SMPL2PKT_EN BIT(1)
> +#define MAX_NUM_CH(x) (((x) & 0x1f) - 1)
> +#define NUM_OF_I2S_PORTS(x) ((((x) / 2 - 1) & 0x3) << 5)
> +#define AUDIO_TYPE_LPCM (2 << 7)
> +#define CFG_SUB_PCKT_NUM(x) ((((x) - 1) & 0x7) << 11)
> +#define AUDIO_CH_NUM(x) ((((x) - 1) & 0x1f) << 2)
> +#define TRANS_SMPL_WIDTH_16 0
> +#define TRANS_SMPL_WIDTH_24 BIT(11)
> +#define TRANS_SMPL_WIDTH_32 (2 << 11)
> +#define I2S_DEC_PORT_EN(x) (((x) & 0xf) << 17)
> +#define SPDIF_ENABLE BIT(21)
> +#define SPDIF_AVG_SEL BIT(20)
> +#define SPDIF_JITTER_BYPASS BIT(19)
> +#define SPDIF_FIFO_MID_RANGE(x) (((x) & 0xff) << 11)
> +#define SPDIF_JITTER_THRSH(x) (((x) & 0xff) << 3)
> +#define SPDIF_JITTER_AVG_WIN(x) ((x) & 0x7)
> +
> +/* Refernce cycles when using lane clock as refernce */
> +#define LANE_REF_CYC 0x8000
> +
> +enum voltage_swing_level {
> + VOLTAGE_LEVEL_0,
> + VOLTAGE_LEVEL_1,
> + VOLTAGE_LEVEL_2,
> + VOLTAGE_LEVEL_3,
> +};
> +
> +enum pre_emphasis_level {
> + PRE_EMPHASIS_LEVEL_0,
> + PRE_EMPHASIS_LEVEL_1,
> + PRE_EMPHASIS_LEVEL_2,
> + PRE_EMPHASIS_LEVEL_3,
> +};
> +
> +enum pattern_set {
> + PTS1 = BIT(0),
> + PTS2 = BIT(1),
> + PTS3 = BIT(2),
> + PTS4 = BIT(3),
> + DP_NONE = BIT(4)
> +};
> +
> +enum vic_color_depth {
> + BCS_6 = 0x1,
> + BCS_8 = 0x2,
> + BCS_10 = 0x4,
> + BCS_12 = 0x8,
> + BCS_16 = 0x10,
> +};
> +
> +enum vic_bt_type {
> + BT_601 = 0x0,
> + BT_709 = 0x1,
> +};
> +
> +void cdn_dp_clock_reset(struct cdn_dp_device *dp);
> +
> +void cdn_dp_set_fw_clk(struct cdn_dp_device *dp, u32 clk);
> +int cdn_dp_load_firmware(struct cdn_dp_device *dp, const u32 *i_mem,
> + u32 i_size, const u32 *d_mem, u32 d_size);
> +int cdn_dp_set_firmware_active(struct cdn_dp_device *dp, bool enable);
> +int cdn_dp_set_host_cap(struct cdn_dp_device *dp, u8 lanes, bool flip);
> +int cdn_dp_event_config(struct cdn_dp_device *dp);
> +u32 cdn_dp_get_event(struct cdn_dp_device *dp);
> +int cdn_dp_get_hpd_status(struct cdn_dp_device *dp);
> +int cdn_dp_dpcd_write(struct cdn_dp_device *dp, u32 addr, u8 value);
> +int cdn_dp_dpcd_read(struct cdn_dp_device *dp, u32 addr, u8 *data, u16 len);
> +int cdn_dp_get_edid_block(void *dp, u8 *edid,
> + unsigned int block, size_t length);
> +int cdn_dp_training_start(struct cdn_dp_device *dp);
> +int cdn_dp_get_training_status(struct cdn_dp_device *dp);
> +int cdn_dp_set_video_status(struct cdn_dp_device *dp, int active);
> +int cdn_dp_config_video(struct cdn_dp_device *dp);
> +int cdn_dp_audio_stop(struct cdn_dp_device *dp, struct audio_info *audio);
> +int cdn_dp_audio_mute(struct cdn_dp_device *dp, bool enable);
> +int cdn_dp_audio_config(struct cdn_dp_device *dp, struct audio_info *audio);
> +#endif /* _CDN_DP_REG_H */
> diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
> index edd7ec2..d723d8e 100644
> --- a/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
> +++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop.c
> @@ -969,9 +969,11 @@ static void vop_crtc_enable(struct drm_crtc *crtc)
> vop_dsp_hold_valid_irq_disable(vop);
> }
>
> - pin_pol = 0x8;
> - pin_pol |= (adjusted_mode->flags & DRM_MODE_FLAG_NHSYNC) ? 0 : 1;
> - pin_pol |= (adjusted_mode->flags & DRM_MODE_FLAG_NVSYNC) ? 0 : (1 << 1);
> + pin_pol = BIT(DCLK_INVERT);
> + pin_pol |= (adjusted_mode->flags & DRM_MODE_FLAG_NHSYNC) ?
> + 0 : BIT(HSYNC_POSITIVE);
> + pin_pol |= (adjusted_mode->flags & DRM_MODE_FLAG_NVSYNC) ?
> + 0 : BIT(VSYNC_POSITIVE);
> VOP_CTRL_SET(vop, pin_pol, pin_pol);
>
> switch (s->output_type) {
> @@ -991,6 +993,11 @@ static void vop_crtc_enable(struct drm_crtc *crtc)
> VOP_CTRL_SET(vop, mipi_pin_pol, pin_pol);
> VOP_CTRL_SET(vop, mipi_en, 1);
> break;
> + case DRM_MODE_CONNECTOR_DisplayPort:
> + pin_pol &= ~BIT(DCLK_INVERT);
> + VOP_CTRL_SET(vop, dp_pin_pol, pin_pol);
> + VOP_CTRL_SET(vop, dp_en, 1);
> + break;
> default:
> DRM_ERROR("unsupport connector_type[%d]\n", s->output_type);
> }
> diff --git a/drivers/gpu/drm/rockchip/rockchip_drm_vop.h b/drivers/gpu/drm/rockchip/rockchip_drm_vop.h
> index ff4f52e..4820a8b 100644
> --- a/drivers/gpu/drm/rockchip/rockchip_drm_vop.h
> +++ b/drivers/gpu/drm/rockchip/rockchip_drm_vop.h
> @@ -45,6 +45,7 @@ struct vop_ctrl {
> struct vop_reg edp_en;
> struct vop_reg hdmi_en;
> struct vop_reg mipi_en;
> + struct vop_reg dp_en;
> struct vop_reg out_mode;
> struct vop_reg dither_down;
> struct vop_reg dither_up;
> @@ -53,6 +54,7 @@ struct vop_ctrl {
> struct vop_reg hdmi_pin_pol;
> struct vop_reg edp_pin_pol;
> struct vop_reg mipi_pin_pol;
> + struct vop_reg dp_pin_pol;
>
> struct vop_reg htotal_pw;
> struct vop_reg hact_st_end;
> @@ -242,6 +244,13 @@ enum scale_down_mode {
> SCALE_DOWN_AVG = 0x1
> };
>
> +enum vop_pol {
> + HSYNC_POSITIVE = 0,
> + VSYNC_POSITIVE = 1,
> + DEN_NEGATIVE = 2,
> + DCLK_INVERT = 3
> +};
> +
> #define FRAC_16_16(mult, div) (((mult) << 16) / (div))
> #define SCL_FT_DEFAULT_FIXPOINT_SHIFT 12
> #define SCL_MAX_VSKIPLINES 4
> diff --git a/drivers/gpu/drm/rockchip/rockchip_vop_reg.c b/drivers/gpu/drm/rockchip/rockchip_vop_reg.c
> index 5b1ae1f..dcf172e 100644
> --- a/drivers/gpu/drm/rockchip/rockchip_vop_reg.c
> +++ b/drivers/gpu/drm/rockchip/rockchip_vop_reg.c
> @@ -281,6 +281,7 @@ static const struct vop_data rk3288_vop = {
> static const struct vop_ctrl rk3399_ctrl_data = {
> .standby = VOP_REG(RK3399_SYS_CTRL, 0x1, 22),
> .gate_en = VOP_REG(RK3399_SYS_CTRL, 0x1, 23),
> + .dp_en = VOP_REG(RK3399_SYS_CTRL, 0x1, 11),
> .rgb_en = VOP_REG(RK3399_SYS_CTRL, 0x1, 12),
> .hdmi_en = VOP_REG(RK3399_SYS_CTRL, 0x1, 13),
> .edp_en = VOP_REG(RK3399_SYS_CTRL, 0x1, 14),
> @@ -290,6 +291,7 @@ static const struct vop_ctrl rk3399_ctrl_data = {
> .data_blank = VOP_REG(RK3399_DSP_CTRL0, 0x1, 19),
> .out_mode = VOP_REG(RK3399_DSP_CTRL0, 0xf, 0),
> .rgb_pin_pol = VOP_REG(RK3399_DSP_CTRL1, 0xf, 16),
> + .dp_pin_pol = VOP_REG(RK3399_DSP_CTRL1, 0xf, 16),
> .hdmi_pin_pol = VOP_REG(RK3399_DSP_CTRL1, 0xf, 20),
> .edp_pin_pol = VOP_REG(RK3399_DSP_CTRL1, 0xf, 24),
> .mipi_pin_pol = VOP_REG(RK3399_DSP_CTRL1, 0xf, 28),
--
Ｍark Yao 姚智情
Rockchip 福州瑞芯微电子有限公司
Fuzhou Headquarters
Addr:No.21 Building, A District, Fuzhou
Software Park, 89 Soft Avenue, Tongpan Road,
Gulou District, Fuzhou (350003)
地址:福建省福州市铜盘路软件大道89号软件园A区21号楼 (350003)
Tel:（86-0591）83991906 - 8296
E-mail:mark.yao at rock-chips.com
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