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media: rockchip: hdmirx: add hdcp1x key write

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Change-Id: I43d828663e1d3fcdc670d258f883f4a1b3492b06
Signed-off-by: Chen Shunqing <csq@rock-chips.com>
This commit is contained in:
Chen Shunqing 2023-03-29 09:24:14 +00:00
parent c6c61f8679
commit 52b4834126
2 changed files with 67 additions and 5 deletions
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71
drivers/media/platform/rockchip/hdmirx/rk_hdmirx_hdcp.c
View File

@ -79,14 +79,14 @@ static int hdcp_load_keys_cb(struct rk_hdmirx_hdcp *hdcp)
static int rk_hdmirx_hdcp_load_key(struct rk_hdmirx_hdcp *hdcp)
{
int ret;
int ret = 0;
hdcp->status = HDMIRX_HDCP_DISABLED;
if (!hdcp->keys_is_load) {
if (!hdcp->keys_is_load)
ret = hdcp_load_keys_cb(hdcp);
if (ret)
return ret;
}
if (ret && !hdcp->test_key_load)
return -EINVAL;
hdcp->status = HDMIRX_HDCP_AUTH_START;
if (hdcp->aes_encrypt)
@ -313,6 +313,60 @@ static ssize_t support_show(struct device *device,
static DEVICE_ATTR_RO(support);
static ssize_t test_key1x_store(struct device *device,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct rk_hdmirx_hdcp *hdcp = g_hdmirx_hdcp;
u8 hdcp_vendor_data[VENDOR_DATA_SIZE + 1];
struct hdcp_key_data_t *key_data;
void __iomem *base;
char str[4] = {0};
int ret, len, i;
len = count / 2;
if (len < (HDCP_KEY_SIZE + HDCP_KEY_SEED_SIZE))
return -EINVAL;
if (len > VENDOR_DATA_SIZE)
len = VENDOR_DATA_SIZE;
for (i = 0; i < len; i++) {
long c = -1;
memcpy(str, &buf[i * 2], 2);
ret = kstrtol(str, 16, &c);
if (ret || c > 255 || c < 0)
return -EINVAL;
hdcp_vendor_data[i] = (u8)(c & 0xff);
}
key_data = (struct hdcp_key_data_t *)hdcp_vendor_data;
if ((key_data->signature != HDCP_SIG_MAGIC)
|| !(key_data->flags & HDCP_FLG_AES))
hdcp->aes_encrypt = false;
else
hdcp->aes_encrypt = true;
base = sip_hdcp_request_share_memory(HDMI_RX);
if (!base)
return -ENOMEM;
memcpy_toio(base, hdcp_vendor_data, len);
hdcp->test_key_load = true;
if (!hdcp->enable)
return count;
rk_hdmirx_hdcp2_hpd_config(hdcp, false);
rk_hdmirx_hdcp_start(hdcp);
msleep(300);
rk_hdmirx_hdcp2_hpd_config(hdcp, true);
return count;
}
static DEVICE_ATTR_WO(test_key1x);
struct rk_hdmirx_hdcp *rk_hdmirx_hdcp_register(struct rk_hdmirx_hdcp *hdcp_data)
{
int ret = 0;
@ -362,6 +416,12 @@ struct rk_hdmirx_hdcp *rk_hdmirx_hdcp_register(struct rk_hdmirx_hdcp *hdcp_data)
goto error2;
}
ret = device_create_file(hdcp->mdev.this_device, &dev_attr_test_key1x);
if (ret) {
dev_err(hdcp->dev, "HDCP: Could not add sys file test_key1x\n");
goto error2;
}
hdcp->hdcp_start = rk_hdmirx_hdcp_start;
hdcp->hdcp_stop = rk_hdmirx_hdcp_stop;
hdcp->hdcp2_connect_ctrl = rk_hdmirx_hdcp2_connect_ctrl;
@ -382,5 +442,6 @@ void rk_hdmirx_hdcp_unregister(struct rk_hdmirx_hdcp *hdcp)
device_remove_file(hdcp->mdev.this_device, &dev_attr_enable);
device_remove_file(hdcp->mdev.this_device, &dev_attr_status);
device_remove_file(hdcp->mdev.this_device, &dev_attr_support);
device_remove_file(hdcp->mdev.this_device, &dev_attr_test_key1x);
misc_deregister(&hdcp->mdev);
}

1
drivers/media/platform/rockchip/hdmirx/rk_hdmirx_hdcp.h
View File

@ -48,6 +48,7 @@ struct rk_hdmirx_hdcp {
struct miscdevice mdev;
bool keys_is_load;
bool test_key_load;
bool aes_encrypt;
struct device *dev;
struct rk_hdmirx_dev *hdmirx;