commit 234a60244c62ffce5c5c1d5b80d200f4568c5cfd
author Patrick Delaunay <patrick.delaunay@st.com> Fri Aug 02 13:08:03 2019 +0200
committer Patrice Chotard <patrice.chotard@st.com> Tue Aug 27 11:19:23 2019 +0200
tree 1cb48f4de3abda3055c59a67b89f97447be40008
parent 0c8620d2ffe1440165156c7a0d95424c7eabe60b

pmu: stpmic1: change specific NVM api to MISC

Use MISC u-class to export the NVM register (starting at 0xF8 offset)
and avoid specific API.
- SHADOW have offset < 0.
- NVM have register > 0

Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>

drivers/misc/stm32mp_fuse.c

diff --git a/drivers/misc/stm32mp_fuse.c b/drivers/misc/stm32mp_fuse.c
index a1a27d1..0eed345 100644
--- a/drivers/misc/stm32mp_fuse.c
+++ b/drivers/misc/stm32mp_fuse.c
@@ -40,8 +40,17 @@
 
 #ifdef CONFIG_PMIC_STPMIC1
 	case STM32MP_NVM_BANK:
+		ret = uclass_get_device_by_driver(UCLASS_MISC,
+						  DM_GET_DRIVER(stpmic1_nvm),
+						  &dev);
+		if (ret)
+			return ret;
 		*val = 0;
-		ret = stpmic1_shadow_read_byte(word, (u8 *)val);
+		ret = misc_read(dev, -word, val, 1);
+		if (ret != 1)
+			ret = -EINVAL;
+		else
+			ret = 0;
 		break;
 #endif /* CONFIG_PMIC_STPMIC1 */
 
@@ -76,7 +85,16 @@
 
 #ifdef CONFIG_PMIC_STPMIC1
 	case STM32MP_NVM_BANK:
-		ret = stpmic1_nvm_write_byte(word, (u8 *)&val);
+		ret = uclass_get_device_by_driver(UCLASS_MISC,
+						  DM_GET_DRIVER(stpmic1_nvm),
+						  &dev);
+		if (ret)
+			return ret;
+		ret = misc_write(dev, word, &val, 1);
+		if (ret != 1)
+			ret = -EINVAL;
+		else
+			ret = 0;
 		break;
 #endif /* CONFIG_PMIC_STPMIC1 */
 
@@ -110,8 +128,17 @@
 
 #ifdef CONFIG_PMIC_STPMIC1
 	case STM32MP_NVM_BANK:
+		ret = uclass_get_device_by_driver(UCLASS_MISC,
+						  DM_GET_DRIVER(stpmic1_nvm),
+						  &dev);
+		if (ret)
+			return ret;
 		*val = 0;
-		ret = stpmic1_nvm_read_byte(word, (u8 *)val);
+		ret = misc_read(dev, word, val, 1);
+		if (ret != 1)
+			ret = -EINVAL;
+		else
+			ret = 0;
 		break;
 #endif /* CONFIG_PMIC_STPMIC1 */
 
@@ -146,7 +173,16 @@
 
 #ifdef CONFIG_PMIC_STPMIC1
 	case STM32MP_NVM_BANK:
-		ret = stpmic1_shadow_write_byte(word, (u8 *)&val);
+		ret = uclass_get_device_by_driver(UCLASS_MISC,
+						  DM_GET_DRIVER(stpmic1_nvm),
+						  &dev);
+		if (ret)
+			return ret;
+		ret = misc_write(dev, -word, &val, 1);
+		if (ret != 1)
+			ret = -EINVAL;
+		else
+			ret = 0;
 		break;
 #endif /* CONFIG_PMIC_STPMIC1 */