[Patch v6 09/10] media: s5p-mfc: Load firmware for each run in MFCv12.

[Aakarsh Jain]

In MFCv12, some section of firmware gets updated at each MFC run.
Hence we need to reload original firmware for each run at the start.

Cc: linux-fsd at tesla.com
Signed-off-by: Smitha T Murthy <smithatmurthy at gmail.com>
Signed-off-by: Aakarsh Jain <aakarsh.jain at samsung.com>
---
 drivers/media/platform/samsung/s5p-mfc/s5p_mfc_ctrl.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/drivers/media/platform/samsung/s5p-mfc/s5p_mfc_ctrl.c b/drivers/media/platform/samsung/s5p-mfc/s5p_mfc_ctrl.c
index b49159142c53..503487f34a80 100644
--- a/drivers/media/platform/samsung/s5p-mfc/s5p_mfc_ctrl.c
+++ b/drivers/media/platform/samsung/s5p-mfc/s5p_mfc_ctrl.c
@@ -51,8 +51,14 @@ int s5p_mfc_load_firmware(struct s5p_mfc_dev *dev)
 	 * into kernel. */
 	mfc_debug_enter();
 
-	if (dev->fw_get_done)
-		return 0;
+	/* In case of MFC v12, RET_SYS_INIT response from hardware fails due to
+	 * incorrect firmware transfer and therefore it is not able to initialize
+	 * the hardware. This causes failed response for SYS_INIT command when
+	 * MFC runs for second time. So, load the MFC v12 firmware for each run.
+	 */
+	if (!IS_MFCV12(dev))
+		if (dev->fw_get_done)
+			return 0;
 
 	for (i = MFC_FW_MAX_VERSIONS - 1; i >= 0; i--) {
 		if (!dev->variant->fw_name[i])
-- 
2.17.1