diff options
Diffstat (limited to 'drivers/video')
| -rw-r--r-- | drivers/video/tegra/dc/nvhdcp.c | 15 |
1 files changed, 7 insertions, 8 deletions
diff --git a/drivers/video/tegra/dc/nvhdcp.c b/drivers/video/tegra/dc/nvhdcp.c index 6ff5a79e2581..aa581c254fb5 100644 --- a/drivers/video/tegra/dc/nvhdcp.c +++ b/drivers/video/tegra/dc/nvhdcp.c @@ -420,7 +420,7 @@ static int wait_hdcp_ctrl(struct tegra_dc_hdmi_data *hdmi, u32 mask, u32 *v) do { ctrl = tegra_hdmi_readl(hdmi, HDMI_NV_PDISP_RG_HDCP_CTRL); - if ((ctrl | (mask))) { + if ((ctrl & mask)) { if (v) *v = ctrl; break; @@ -435,19 +435,18 @@ static int wait_hdcp_ctrl(struct tegra_dc_hdmi_data *hdmi, u32 mask, u32 *v) return 0; } -/* wait for any bits in mask to be set in HDMI_NV_PDISP_KEY_CTRL +/* wait for bits in mask to be set to value in HDMI_NV_PDISP_KEY_CTRL * waits up to 100mS */ -static int wait_key_ctrl(struct tegra_dc_hdmi_data *hdmi, u32 mask) +static int wait_key_ctrl(struct tegra_dc_hdmi_data *hdmi, u32 mask, u32 value) { int retries = 101; u32 ctrl; do { + msleep(1); ctrl = tegra_hdmi_readl(hdmi, HDMI_NV_PDISP_KEY_CTRL); - if ((ctrl | (mask))) + if (((ctrl ^ value) & mask) == 0) break; - if (retries > 1) - msleep(1); } while (--retries); if (!retries) { nvhdcp_err("key ctrl read timeout (mask=0x%x)\n", mask); @@ -667,7 +666,7 @@ static int load_kfuse(struct tegra_dc_hdmi_data *hdmi) tegra_hdmi_writel(hdmi, ctrl | PKEY_REQUEST_RELOAD_TRIGGER | LOCAL_KEYS , HDMI_NV_PDISP_KEY_CTRL); - e = wait_key_ctrl(hdmi, PKEY_LOADED); + e = wait_key_ctrl(hdmi, PKEY_LOADED, PKEY_LOADED); if (e) { nvhdcp_err("key reload timeout\n"); return -EIO; @@ -705,7 +704,7 @@ static int load_kfuse(struct tegra_dc_hdmi_data *hdmi) tegra_hdmi_writel(hdmi, tmp, HDMI_NV_PDISP_KEY_CTRL); /* wait for WRITE16 to complete */ - e = wait_key_ctrl(hdmi, 0x10); /* WRITE16 */ + e = wait_key_ctrl(hdmi, 0x10, 0); /* WRITE16 */ if (e) { nvhdcp_err("key write timeout\n"); return -EIO; |