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Date: Wed, 5 Jan 2022 11:32:01 +0100
From: Robert Foss <robert.foss@...aro.org>
To: Xin Ji <xji@...logixsemi.com>
Cc: narmstrong@...libre.com, dan.carpenter@...cle.com,
laurent.pinchart@...asonboard.com, jonas@...boo.se,
jernej.skrabec@...il.com, airlied@...ux.ie, daniel@...ll.ch,
sam@...nborg.org, pihsun@...omium.org, tzungbi@...gle.com,
maxime@...no.tech, drinkcat@...gle.com, hsinyi@...omium.org,
dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
bliang@...logixsemi.com, qwen@...logixsemi.com
Subject: Re: [PATCH 1/2] drm/bridge: anx7625: add HDCP support
On Wed, 5 Jan 2022 at 08:17, Xin Ji <xji@...logixsemi.com> wrote:
>
> On Tue, Jan 04, 2022 at 03:50:34PM +0100, Robert Foss wrote:
> > Hey Xin,
> Hi Robert Foss, thanks for the reply.
> As HDCP config interface "anx7625_hdcp_config(..)" need be called in
> anx7625_connector_atomic_check(...) interface, so I cannot split out
> atomic conversion patch.
I don't think that's correct, but maybe I'm missing something. The
atomic conversion patch should be self-contained if done before the
addition of HDCP support.
>
> Thanks,
> Xin
> >
> > On Tue, 9 Nov 2021 at 03:42, Xin Ji <xji@...logixsemi.com> wrote:
> > >
> > > This patch provides HDCP setting interface for userspace to dynamic
> > > enable/disable HDCP function.
> > >
> > > Signed-off-by: Xin Ji <xji@...logixsemi.com>
> > > ---
> > > drivers/gpu/drm/bridge/analogix/anx7625.c | 368 +++++++++++++++++++++-
> > > drivers/gpu/drm/bridge/analogix/anx7625.h | 69 +++-
> > > 2 files changed, 425 insertions(+), 12 deletions(-)
> > >
> > > diff --git a/drivers/gpu/drm/bridge/analogix/anx7625.c b/drivers/gpu/drm/bridge/analogix/anx7625.c
> > > index 001fb39d9919..6d93026c2999 100644
> > > --- a/drivers/gpu/drm/bridge/analogix/anx7625.c
> > > +++ b/drivers/gpu/drm/bridge/analogix/anx7625.c
> > > @@ -26,6 +26,7 @@
> > > #include <drm/drm_crtc_helper.h>
> > > #include <drm/drm_dp_helper.h>
> > > #include <drm/drm_edid.h>
> > > +#include <drm/drm_hdcp.h>
> > > #include <drm/drm_mipi_dsi.h>
> > > #include <drm/drm_of.h>
> > > #include <drm/drm_panel.h>
> > > @@ -213,6 +214,60 @@ static int wait_aux_op_finish(struct anx7625_data *ctx)
> > > return 0;
> > > }
> > >
> > > +static int anx7625_aux_dpcd_read(struct anx7625_data *ctx,
> > > + u8 addrh, u8 addrm, u8 addrl,
> > > + u8 len, u8 *buf)
> > > +{
> > > + struct device *dev = &ctx->client->dev;
> > > + int ret;
> > > + u8 cmd;
> > > +
> > > + if (len > MAX_DPCD_BUFFER_SIZE) {
> > > + DRM_DEV_ERROR(dev, "exceed aux buffer len.\n");
> > > + return -EINVAL;
> > > + }
> > > +
> > > + cmd = ((len - 1) << 4) | 0x09;
> > > +
> > > + /* Set command and length */
> > > + ret = anx7625_reg_write(ctx, ctx->i2c.rx_p0_client,
> > > + AP_AUX_COMMAND, cmd);
> > > +
> > > + /* Set aux access address */
> > > + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p0_client,
> > > + AP_AUX_ADDR_7_0, addrl);
> > > + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p0_client,
> > > + AP_AUX_ADDR_15_8, addrm);
> > > + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p0_client,
> > > + AP_AUX_ADDR_19_16, addrh);
> > > +
> > > + /* Enable aux access */
> > > + ret |= anx7625_write_or(ctx, ctx->i2c.rx_p0_client,
> > > + AP_AUX_CTRL_STATUS, AP_AUX_CTRL_OP_EN);
> > > +
> > > + if (ret < 0) {
> > > + DRM_DEV_ERROR(dev, "cannot access aux related register.\n");
> > > + return -EIO;
> > > + }
> > > +
> > > + usleep_range(2000, 2100);
> > > +
> > > + ret = wait_aux_op_finish(ctx);
> > > + if (ret) {
> > > + DRM_DEV_ERROR(dev, "aux IO error: wait aux op finish.\n");
> > > + return ret;
> > > + }
> > > +
> > > + ret = anx7625_reg_block_read(ctx, ctx->i2c.rx_p0_client,
> > > + AP_AUX_BUFF_START, len, buf);
> > > + if (ret < 0) {
> > > + DRM_DEV_ERROR(dev, "read dpcd register failed\n");
> > > + return -EIO;
> > > + }
> > > +
> > > + return 0;
> > > +}
> > > +
> > > static int anx7625_video_mute_control(struct anx7625_data *ctx,
> > > u8 status)
> > > {
> > > @@ -669,6 +724,160 @@ static int anx7625_dpi_config(struct anx7625_data *ctx)
> > > return ret;
> > > }
> > >
> > > +static int anx7625_read_flash_status(struct anx7625_data *ctx)
> > > +{
> > > + return anx7625_reg_read(ctx, ctx->i2c.rx_p0_client, R_RAM_CTRL);
> > > +}
> > > +
> > > +static int anx7625_hdcp_key_probe(struct anx7625_data *ctx)
> > > +{
> > > + int ret, val;
> > > + struct device *dev = &ctx->client->dev;
> > > + u8 ident[32];
> >
> > Could this hardcoded array length be replaced with FLASH_BUF_LEN?
> >
> > > +
> > > + ret = anx7625_reg_write(ctx, ctx->i2c.rx_p0_client,
> > > + FLASH_ADDR_HIGH, 0x91);
> > > + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p0_client,
> > > + FLASH_ADDR_LOW, 0xA0);
> > > + if (ret < 0) {
> > > + DRM_DEV_ERROR(dev, "IO error : set key flash address.\n");
> > > + return ret;
> > > + }
> > > +
> > > + ret = anx7625_reg_write(ctx, ctx->i2c.rx_p0_client,
> > > + FLASH_LEN_HIGH, (FLASH_BUF_LEN - 1) >> 8);
> > > + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p0_client,
> > > + FLASH_LEN_LOW, (FLASH_BUF_LEN - 1) & 0xFF);
> > > + if (ret < 0) {
> > > + DRM_DEV_ERROR(dev, "IO error : set key flash len.\n");
> > > + return ret;
> > > + }
> > > +
> > > + ret = anx7625_reg_write(ctx, ctx->i2c.rx_p0_client,
> > > + R_FLASH_RW_CTRL, FLASH_READ);
> > > + ret |= readx_poll_timeout(anx7625_read_flash_status,
> > > + ctx, val,
> > > + ((val & FLASH_DONE) || (val < 0)),
> > > + 2000,
> > > + 2000 * 150);
> > > + if (ret) {
> > > + DRM_DEV_ERROR(dev, "flash read access fail!\n");
> > > + return -EIO;
> > > + }
> > > +
> > > + ret = anx7625_reg_block_read(ctx, ctx->i2c.rx_p0_client,
> > > + FLASH_BUF_BASE_ADDR,
> > > + FLASH_BUF_LEN, ident);
> > > + if (ret < 0) {
> > > + DRM_DEV_ERROR(dev, "read flash data fail!\n");
> > > + return -EIO;
> > > + }
> > > +
> > > + if (ident[29] == 0xFF && ident[30] == 0xFF && ident[31] == 0xFF)
> > > + return -EINVAL;
> > > +
> > > + return 0;
> > > +}
> > > +
> > > +static int anx7625_hdcp_key_load(struct anx7625_data *ctx)
> > > +{
> > > + int ret;
> > > + struct device *dev = &ctx->client->dev;
> > > +
> > > + /* Select HDCP 1.4 KEY */
> > > + ret = anx7625_reg_write(ctx, ctx->i2c.rx_p0_client,
> > > + R_BOOT_RETRY, 0x12);
> > > + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p0_client,
> > > + FLASH_ADDR_HIGH, HDCP14KEY_START_ADDR >> 8);
> > > + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p0_client,
> > > + FLASH_ADDR_LOW, HDCP14KEY_START_ADDR & 0xFF);
> > > + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p0_client,
> > > + R_RAM_LEN_H, HDCP14KEY_SIZE >> 12);
> > > + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p0_client,
> > > + R_RAM_LEN_L, HDCP14KEY_SIZE >> 4);
> > > +
> > > + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p0_client,
> > > + R_RAM_ADDR_H, 0);
> > > + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p0_client,
> > > + R_RAM_ADDR_L, 0);
> > > + /* Enable HDCP 1.4 KEY load */
> > > + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p0_client,
> > > + R_RAM_CTRL, DECRYPT_EN | LOAD_START);
> > > + DRM_DEV_DEBUG_DRIVER(dev, "load HDCP 1.4 key done\n");
> > > + return ret;
> > > +}
> > > +
> > > +static int anx7625_hdcp_config(struct anx7625_data *ctx, bool on)
> > > +{
> > > + u8 bcap;
> > > + int ret;
> > > + struct device *dev = &ctx->client->dev;
> > > +
> > > + if (!on) {
> > > + DRM_DEV_DEBUG_DRIVER(dev, "disable HDCP 1.4\n");
> > > +
> > > + /* Disable HDCP */
> > > + ret = anx7625_write_and(ctx, ctx->i2c.rx_p1_client, 0xee, 0x9f);
> > > + /* Try auth flag */
> > > + ret |= anx7625_write_or(ctx, ctx->i2c.rx_p1_client, 0xec, 0x10);
> > > + /* Interrupt for DRM */
> > > + ret |= anx7625_write_or(ctx, ctx->i2c.rx_p1_client, 0xff, 0x01);
> > > + if (ret < 0)
> > > + DRM_DEV_ERROR(dev, "fail to disable HDCP\n");
> > > +
> > > + return anx7625_write_and(ctx, ctx->i2c.tx_p0_client,
> > > + TX_HDCP_CTRL0, ~HARD_AUTH_EN & 0xFF);
> > > + }
> > > +
> > > + ret = anx7625_hdcp_key_probe(ctx);
> > > + if (ret) {
> > > + DRM_DEV_DEBUG_DRIVER(dev, "no key found, not to do hdcp\n");
> > > + return ret;
> > > + }
> > > +
> > > + anx7625_aux_dpcd_read(ctx, 0x06, 0x80, 0x28, 1, &bcap);
> > > + if (!(bcap & 0x01)) {
> > > + DRM_WARN("downstream not support HDCP 1.4, cap(%x).\n", bcap);
> > > + return 0;
> > > + }
> > > +
> > > + DRM_DEV_DEBUG_DRIVER(dev, "enable HDCP 1.4\n");
> > > +
> > > + /* First clear HDCP state */
> > > + ret = anx7625_reg_write(ctx, ctx->i2c.tx_p0_client,
> > > + TX_HDCP_CTRL0,
> > > + KSVLIST_VLD | BKSV_SRM_PASS | RE_AUTHEN);
> > > + usleep_range(1000, 1100);
> > > + /* Second clear HDCP state */
> > > + ret |= anx7625_reg_write(ctx, ctx->i2c.tx_p0_client,
> > > + TX_HDCP_CTRL0,
> > > + KSVLIST_VLD | BKSV_SRM_PASS | RE_AUTHEN);
> > > +
> > > + /* Set time for waiting KSVR */
> > > + ret |= anx7625_reg_write(ctx, ctx->i2c.tx_p0_client,
> > > + SP_TX_WAIT_KSVR_TIME, 0xc8);
> > > + /* Set time for waiting R0 */
> > > + ret |= anx7625_reg_write(ctx, ctx->i2c.tx_p0_client,
> > > + SP_TX_WAIT_R0_TIME, 0xb0);
> > > + ret |= anx7625_hdcp_key_load(ctx);
> > > + if (ret) {
> > > + DRM_WARN("prepare HDCP key failed.\n");
> > > + return ret;
> > > + }
> > > +
> > > + ret = anx7625_write_or(ctx, ctx->i2c.rx_p1_client, 0xee, 0x20);
> > > +
> > > + /* Try auth flag */
> > > + ret |= anx7625_write_or(ctx, ctx->i2c.rx_p1_client, 0xec, 0x10);
> > > + /* Interrupt for DRM */
> > > + ret |= anx7625_write_or(ctx, ctx->i2c.rx_p1_client, 0xff, 0x01);
> > > + if (ret < 0)
> > > + DRM_DEV_ERROR(dev, "fail to enable HDCP\n");
> > > +
> > > + return anx7625_write_or(ctx, ctx->i2c.tx_p0_client,
> > > + TX_HDCP_CTRL0, HARD_AUTH_EN);
> > > +}
> > > +
> > > static void anx7625_dp_start(struct anx7625_data *ctx)
> > > {
> > > int ret;
> > > @@ -679,6 +888,9 @@ static void anx7625_dp_start(struct anx7625_data *ctx)
> > > return;
> > > }
> > >
> > > + /* Disable HDCP */
> > > + anx7625_write_and(ctx, ctx->i2c.rx_p1_client, 0xee, 0x9f);
> > > +
> > > if (ctx->pdata.is_dpi)
> > > ret = anx7625_dpi_config(ctx);
> > > else
> > > @@ -686,6 +898,10 @@ static void anx7625_dp_start(struct anx7625_data *ctx)
> > >
> > > if (ret < 0)
> > > DRM_DEV_ERROR(dev, "MIPI phy setup error.\n");
> > > +
> > > + ctx->hdcp_cp = DRM_MODE_CONTENT_PROTECTION_UNDESIRED;
> > > +
> > > + ctx->dp_en = 1;
> > > }
> > >
> > > static void anx7625_dp_stop(struct anx7625_data *ctx)
> > > @@ -705,6 +921,10 @@ static void anx7625_dp_stop(struct anx7625_data *ctx)
> > > ret |= anx7625_video_mute_control(ctx, 1);
> > > if (ret < 0)
> > > DRM_DEV_ERROR(dev, "IO error : mute video fail\n");
> > > +
> > > + ctx->hdcp_cp = DRM_MODE_CONTENT_PROTECTION_UNDESIRED;
> > > +
> > > + ctx->dp_en = 0;
> > > }
> > >
> > > static int sp_tx_rst_aux(struct anx7625_data *ctx)
> > > @@ -859,7 +1079,7 @@ static int sp_tx_edid_read(struct anx7625_data *ctx,
> > > AP_AUX_ADDR_7_0, 0x50);
> > > ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p0_client,
> > > AP_AUX_ADDR_15_8, 0);
> > > - ret |= anx7625_write_and(ctx, ctx->i2c.rx_p0_client,
> > > + ret |= anx7625_reg_write(ctx, ctx->i2c.rx_p0_client,
> > > AP_AUX_ADDR_19_16, 0xf0);
> > > if (ret < 0) {
> > > DRM_DEV_ERROR(dev, "access aux channel IO error.\n");
> > > @@ -1688,6 +1908,83 @@ static int anx7625_attach_dsi(struct anx7625_data *ctx)
> > > return 0;
> > > }
> > >
> > > +void hdcp_check_work_func(struct work_struct *work)
> > > +{
> > > + u8 status;
> > > + struct delayed_work *dwork;
> > > + struct anx7625_data *ctx;
> > > + struct device *dev;
> > > + struct drm_device *drm_dev;
> > > +
> > > + dwork = to_delayed_work(work);
> > > + ctx = container_of(dwork, struct anx7625_data, hdcp_work);
> > > + dev = &ctx->client->dev;
> > > +
> > > + if (!ctx->connector) {
> > > + DRM_ERROR("HDCP connector is null!");
> > > + return;
> > > + }
> > > +
> > > + drm_dev = ctx->connector->dev;
> > > + drm_modeset_lock(&drm_dev->mode_config.connection_mutex, NULL);
> > > + mutex_lock(&ctx->hdcp_wq_lock);
> > > +
> > > + status = anx7625_reg_read(ctx, ctx->i2c.tx_p0_client, 0);
> > > + DRM_DEV_DEBUG_DRIVER(dev, "sink HDCP status check: %.02x\n", status);
> > > + if (status & BIT(1)) {
> > > + ctx->hdcp_cp = DRM_MODE_CONTENT_PROTECTION_ENABLED;
> > > + drm_hdcp_update_content_protection(ctx->connector,
> > > + ctx->hdcp_cp);
> > > + DRM_DEV_DEBUG_DRIVER(dev, "update CP to ENABLE\n");
> > > + }
> > > +
> > > + mutex_unlock(&ctx->hdcp_wq_lock);
> > > + drm_modeset_unlock(&drm_dev->mode_config.connection_mutex);
> > > +}
> > > +
> > > +static int anx7625_connector_atomic_check(struct anx7625_data *ctx,
> > > + struct drm_connector_state *state)
> > > +{
> > > + struct device *dev = &ctx->client->dev;
> > > + int cp;
> > > +
> > > + DRM_DEV_DEBUG_DRIVER(dev, "hdcp state check\n");
> > > + cp = state->content_protection;
> > > +
> > > + if (cp == ctx->hdcp_cp)
> > > + return 0;
> > > +
> > > + if (cp == DRM_MODE_CONTENT_PROTECTION_DESIRED) {
> > > + if (ctx->dp_en) {
> > > + DRM_DEV_DEBUG_DRIVER(dev, "enable HDCP\n");
> > > + anx7625_hdcp_config(ctx, true);
> > > +
> > > + queue_delayed_work(ctx->hdcp_workqueue,
> > > + &ctx->hdcp_work,
> > > + msecs_to_jiffies(2000));
> > > + }
> > > + }
> > > +
> > > + if (cp == DRM_MODE_CONTENT_PROTECTION_UNDESIRED) {
> > > + if (ctx->hdcp_cp != DRM_MODE_CONTENT_PROTECTION_ENABLED) {
> > > + DRM_ERROR("current CP is not ENABLED\n");
> > > + return -EINVAL;
> > > + }
> > > + anx7625_hdcp_config(ctx, false);
> > > + ctx->hdcp_cp = DRM_MODE_CONTENT_PROTECTION_UNDESIRED;
> > > + drm_hdcp_update_content_protection(ctx->connector,
> > > + ctx->hdcp_cp);
> > > + DRM_DEV_DEBUG_DRIVER(dev, "update CP to UNDESIRE\n");
> > > + }
> > > +
> > > + if (cp == DRM_MODE_CONTENT_PROTECTION_ENABLED) {
> > > + DRM_ERROR("Userspace illegal set to PROTECTION ENABLE\n");
> > > + return -EINVAL;
> > > + }
> > > +
> > > + return 0;
> > > +}
> > > +
> > > static int anx7625_bridge_attach(struct drm_bridge *bridge,
> > > enum drm_bridge_attach_flags flags)
> > > {
> > > @@ -1902,25 +2199,58 @@ static bool anx7625_bridge_mode_fixup(struct drm_bridge *bridge,
> > > return true;
> > > }
> > >
> > > -static void anx7625_bridge_enable(struct drm_bridge *bridge)
> > > +static int anx7625_bridge_atomic_check(struct drm_bridge *bridge,
> > > + struct drm_bridge_state *bridge_state,
> > > + struct drm_crtc_state *crtc_state,
> > > + struct drm_connector_state *conn_state)
> > > {
> > > struct anx7625_data *ctx = bridge_to_anx7625(bridge);
> > > struct device *dev = &ctx->client->dev;
> > >
> > > - DRM_DEV_DEBUG_DRIVER(dev, "drm enable\n");
> > > + DRM_DEV_DEBUG_DRIVER(dev, "drm bridge atomic check\n");
> > > + anx7625_bridge_mode_fixup(bridge, &crtc_state->mode,
> > > + &crtc_state->adjusted_mode);
> > > +
> > > + return anx7625_connector_atomic_check(ctx, conn_state);
If doing an atomic only conversion patch, the above function call
could simply be removed.
> > > +}
> > > +
> > > +static void anx7625_bridge_atomic_enable(struct drm_bridge *bridge,
> > > + struct drm_bridge_state *state)
> > > +{
> > > + struct anx7625_data *ctx = bridge_to_anx7625(bridge);
> > > + struct device *dev = &ctx->client->dev;
> > > + struct drm_connector *connector;
> > > +
> > > + DRM_DEV_DEBUG_DRIVER(dev, "drm atomic enable\n");
> > > +
> > > + if (!bridge->encoder) {
> > > + DRM_DEV_ERROR(dev, "Parent encoder object not found");
> > > + return;
> > > + }
> > > +
> > > + connector = drm_atomic_get_new_connector_for_encoder(state->base.state,
> > > + bridge->encoder);
> > > + if (!connector)
> > > + return;
> > > +
> > > + ctx->connector = connector;
> > > +
> > > + DRM_DEV_DEBUG_DRIVER(dev, "attached content protection.\n");
> > >
> > > pm_runtime_get_sync(dev);
> > >
> > > anx7625_dp_start(ctx);
> > > }
> > >
> > > -static void anx7625_bridge_disable(struct drm_bridge *bridge)
> > > +static void anx7625_bridge_atomic_disable(struct drm_bridge *bridge,
> > > + struct drm_bridge_state *old)
> > > {
> > > struct anx7625_data *ctx = bridge_to_anx7625(bridge);
> > > struct device *dev = &ctx->client->dev;
> > >
> > > DRM_DEV_DEBUG_DRIVER(dev, "drm disable\n");
> > >
> > > + ctx->connector = NULL;
> > > anx7625_dp_stop(ctx);
> > >
> > > pm_runtime_put_sync(dev);
> > > @@ -1950,11 +2280,14 @@ static struct edid *anx7625_bridge_get_edid(struct drm_bridge *bridge,
> > >
> > > static const struct drm_bridge_funcs anx7625_bridge_funcs = {
> > > .attach = anx7625_bridge_attach,
> > > - .disable = anx7625_bridge_disable,
> > > .mode_valid = anx7625_bridge_mode_valid,
> > > .mode_set = anx7625_bridge_mode_set,
> > > - .mode_fixup = anx7625_bridge_mode_fixup,
> > > - .enable = anx7625_bridge_enable,
> > > + .atomic_check = anx7625_bridge_atomic_check,
> > > + .atomic_enable = anx7625_bridge_atomic_enable,
> > > + .atomic_disable = anx7625_bridge_atomic_disable,
> > > + .atomic_duplicate_state = drm_atomic_helper_bridge_duplicate_state,
> > > + .atomic_destroy_state = drm_atomic_helper_bridge_destroy_state,
> > > + .atomic_reset = drm_atomic_helper_bridge_reset,
> >
> > Could this atomic conversion be split out into its own logical patch?
> >
> > > .detect = anx7625_bridge_detect,
> > > .get_edid = anx7625_bridge_get_edid,
> > > };
> > > @@ -2134,6 +2467,15 @@ static int anx7625_i2c_probe(struct i2c_client *client,
> > > anx7625_init_gpio(platform);
> > >
> > > mutex_init(&platform->lock);
> > > + mutex_init(&platform->hdcp_wq_lock);
> > > +
> > > + INIT_DELAYED_WORK(&platform->hdcp_work, hdcp_check_work_func);
> > > + platform->hdcp_workqueue = create_workqueue("hdcp workqueue");
> > > + if (!platform->hdcp_workqueue) {
> > > + DRM_DEV_ERROR(dev, "fail to create work queue\n");
> > > + ret = -ENOMEM;
> > > + goto free_platform;
> > > + }
> > >
> > > platform->pdata.intp_irq = client->irq;
> > > if (platform->pdata.intp_irq) {
> > > @@ -2143,7 +2485,7 @@ static int anx7625_i2c_probe(struct i2c_client *client,
> > > if (!platform->workqueue) {
> > > DRM_DEV_ERROR(dev, "fail to create work queue\n");
> > > ret = -ENOMEM;
> > > - goto free_platform;
> > > + goto free_hdcp_wq;
> > > }
> > >
> > > ret = devm_request_threaded_irq(dev, platform->pdata.intp_irq,
> > > @@ -2213,6 +2555,10 @@ static int anx7625_i2c_probe(struct i2c_client *client,
> > > if (platform->workqueue)
> > > destroy_workqueue(platform->workqueue);
> > >
> > > +free_hdcp_wq:
> > > + if (platform->hdcp_workqueue)
> > > + destroy_workqueue(platform->hdcp_workqueue);
> > > +
> > > free_platform:
> > > kfree(platform);
> > >
> > > @@ -2228,6 +2574,12 @@ static int anx7625_i2c_remove(struct i2c_client *client)
> > > if (platform->pdata.intp_irq)
> > > destroy_workqueue(platform->workqueue);
> > >
> > > + if (platform->hdcp_workqueue) {
> > > + cancel_delayed_work(&platform->hdcp_work);
> > > + flush_workqueue(platform->workqueue);
> > > + destroy_workqueue(platform->workqueue);
> > > + }
> > > +
> > > if (!platform->pdata.low_power_mode)
> > > pm_runtime_put_sync_suspend(&client->dev);
> > >
> > > diff --git a/drivers/gpu/drm/bridge/analogix/anx7625.h b/drivers/gpu/drm/bridge/analogix/anx7625.h
> > > index 3d79b6fb13c8..89b1b347a463 100644
> > > --- a/drivers/gpu/drm/bridge/analogix/anx7625.h
> > > +++ b/drivers/gpu/drm/bridge/analogix/anx7625.h
> > > @@ -59,10 +59,23 @@
> > >
> > > /***************************************************************/
> > > /* Register definition of device address 0x70 */
> > > -#define I2C_ADDR_70_DPTX 0x70
> > > -
> > > -#define SP_TX_LINK_BW_SET_REG 0xA0
> > > -#define SP_TX_LANE_COUNT_SET_REG 0xA1
> > > +#define TX_HDCP_CTRL0 0x01
> > > +#define STORE_AN BIT(7)
> > > +#define RX_REPEATER BIT(6)
> > > +#define RE_AUTHEN BIT(5)
> > > +#define SW_AUTH_OK BIT(4)
> > > +#define HARD_AUTH_EN BIT(3)
> > > +#define ENC_EN BIT(2)
> > > +#define BKSV_SRM_PASS BIT(1)
> > > +#define KSVLIST_VLD BIT(0)
> > > +
> > > +#define SP_TX_WAIT_R0_TIME 0x40
> > > +#define SP_TX_WAIT_KSVR_TIME 0x42
> > > +#define SP_TX_SYS_CTRL1_REG 0x80
> > > +#define HDCP2TX_FW_EN BIT(4)
> > > +
> > > +#define SP_TX_LINK_BW_SET_REG 0xA0
> > > +#define SP_TX_LANE_COUNT_SET_REG 0xA1
> > >
> > > #define M_VID_0 0xC0
> > > #define M_VID_1 0xC1
> > > @@ -71,6 +84,12 @@
> > > #define N_VID_1 0xC4
> > > #define N_VID_2 0xC5
> > >
> > > +#define KEY_START_ADDR 0x9000
> > > +#define KEY_RESERVED 416
> > > +
> > > +#define HDCP14KEY_START_ADDR (KEY_START_ADDR + KEY_RESERVED)
> > > +#define HDCP14KEY_SIZE 624
> > > +
> > > /***************************************************************/
> > > /* Register definition of device address 0x72 */
> > > #define AUX_RST 0x04
> > > @@ -155,9 +174,43 @@
> > >
> > > #define I2C_ADDR_7E_FLASH_CONTROLLER 0x7E
> > >
> > > +#define R_BOOT_RETRY 0x00
> > > +#define R_RAM_ADDR_H 0x01
> > > +#define R_RAM_ADDR_L 0x02
> > > +#define R_RAM_LEN_H 0x03
> > > +#define R_RAM_LEN_L 0x04
> > > #define FLASH_LOAD_STA 0x05
> > > #define FLASH_LOAD_STA_CHK BIT(7)
> > >
> > > +#define R_RAM_CTRL 0x05
> > > +/* bit positions */
> > > +#define FLASH_DONE BIT(7)
> > > +#define BOOT_LOAD_DONE BIT(6)
> > > +#define CRC_OK BIT(5)
> > > +#define LOAD_DONE BIT(4)
> > > +#define O_RW_DONE BIT(3)
> > > +#define FUSE_BUSY BIT(2)
> > > +#define DECRYPT_EN BIT(1)
> > > +#define LOAD_START BIT(0)
> > > +
> > > +#define FLASH_ADDR_HIGH 0x0F
> > > +#define FLASH_ADDR_LOW 0x10
> > > +#define FLASH_LEN_HIGH 0x31
> > > +#define FLASH_LEN_LOW 0x32
> > > +#define R_FLASH_RW_CTRL 0x33
> > > +/* bit positions */
> > > +#define READ_DELAY_SELECT BIT(7)
> > > +#define GENERAL_INSTRUCTION_EN BIT(6)
> > > +#define FLASH_ERASE_EN BIT(5)
> > > +#define RDID_READ_EN BIT(4)
> > > +#define REMS_READ_EN BIT(3)
> > > +#define WRITE_STATUS_EN BIT(2)
> > > +#define FLASH_READ BIT(1)
> > > +#define FLASH_WRITE BIT(0)
> > > +
> > > +#define FLASH_BUF_BASE_ADDR 0x60
> > > +#define FLASH_BUF_LEN 0x20
> > > +
> > > #define XTAL_FRQ_SEL 0x3F
> > > /* bit field positions */
> > > #define XTAL_FRQ_SEL_POS 5
> > > @@ -392,21 +445,29 @@ struct anx7625_data {
> > > struct platform_device *audio_pdev;
> > > int hpd_status;
> > > int hpd_high_cnt;
> > > + int dp_en;
> > > + int hdcp_cp;
> > > /* Lock for work queue */
> > > struct mutex lock;
> > > struct i2c_client *client;
> > > struct anx7625_i2c_client i2c;
> > > struct i2c_client *last_client;
> > > + struct timer_list hdcp_timer;
> > > struct s_edid_data slimport_edid_p;
> > > struct device *codec_dev;
> > > hdmi_codec_plugged_cb plugged_cb;
> > > struct work_struct work;
> > > struct workqueue_struct *workqueue;
> > > + struct delayed_work hdcp_work;
> > > + struct workqueue_struct *hdcp_workqueue;
> > > + /* Lock for hdcp work queue */
> > > + struct mutex hdcp_wq_lock;
> > > char edid_block;
> > > struct display_timing dt;
> > > u8 display_timing_valid;
> > > struct drm_bridge bridge;
> > > u8 bridge_attached;
> > > + struct drm_connector *connector;
> > > struct mipi_dsi_device *dsi;
> > > };
> > >
> > > --
> > > 2.25.1
> > >
> >
> > With the above issues fixed, feel free to add my R-b to this patch and
> > the split out atomic conversion patch.
> >
> > Reviewed-by: Robert Foss <robert.foss@...aro.org>
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