[U-Boot] [PATCH v4] qe: disable qe when qe-ucode fails to be uploaded for "deep sleep"

[Zhao Qiang]

when qe-ucode fails to be uploaded, "deep sleep" will hang.
if there is no qe-ucode, disable qe module for platforms
which support "deep sleep"

Signed-off-by: Zhao Qiang <B45475 at freescale.com>
---
Changes for v2:
	- add "#ifdef CONFIG_MPC85xx"
Changes for v3:
	- modify commit msg
Changes for v4:
	- modify "#ifdef CONFIG_MPC85xx" to "#ifdef CONFIG_DEEP_SLEEP"

diff --git a/drivers/qe/qe.c b/drivers/qe/qe.c
index b1da75e..9c5fbd1 100644
--- a/drivers/qe/qe.c
+++ b/drivers/qe/qe.c
@@ -14,6 +14,8 @@
 #include "asm/immap_qe.h"
 #include "qe.h"
 
+#define MPC85xx_DEVDISR_QE_DISABLE	0x1
+
 qe_map_t		*qe_immr = NULL;
 static qe_snum_t	snums[QE_NUM_OF_SNUM];
 
@@ -317,7 +319,9 @@ int qe_upload_firmware(const struct qe_firmware *firmware)
 	size_t calc_size = sizeof(struct qe_firmware);
 	size_t length;
 	const struct qe_header *hdr;
-
+#ifdef CONFIG_DEEP_SLEEP
+	ccsr_gur_t *gur = (void *)(CONFIG_SYS_MPC85xx_GUTS_ADDR);
+#endif
 	if (!firmware) {
 		printf("Invalid address\n");
 		return -EINVAL;
@@ -330,6 +334,9 @@ int qe_upload_firmware(const struct qe_firmware *firmware)
 	if ((hdr->magic[0] != 'Q') || (hdr->magic[1] != 'E') ||
 	    (hdr->magic[2] != 'F')) {
 		printf("Not a microcode\n");
+#ifdef CONFIG_DEEP_SLEEP
+		setbits_be32(&gur->devdisr, MPC85xx_DEVDISR_QE_DISABLE);
+#endif
 		return -EPERM;
 	}
 
-- 
1.8.5