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authorWolfram Sang <wsa+renesas@sang-engineering.com>2019-01-16 22:05:55 +0100
committerWolfram Sang <wsa@the-dreams.de>2019-01-23 00:18:10 +0100
commit9d899ed4009976c5cb26196afa6d28b82d78010b (patch)
tree269459438da2e02e3bbff0f431853881e892d06a /drivers/i2c/busses/i2c-sh_mobile.c
parent63c524600353a9c2d097041863a9ab36ed2db79b (diff)
downloadlwn-9d899ed4009976c5cb26196afa6d28b82d78010b.tar.gz
lwn-9d899ed4009976c5cb26196afa6d28b82d78010b.zip
i2c: sh_mobile: update copyright and comments
Update copyright years and add Renesas to it. Add/update comments to make driver easier to understand. Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Diffstat (limited to 'drivers/i2c/busses/i2c-sh_mobile.c')
-rw-r--r--drivers/i2c/busses/i2c-sh_mobile.c7
1 files changed, 3 insertions, 4 deletions
diff --git a/drivers/i2c/busses/i2c-sh_mobile.c b/drivers/i2c/busses/i2c-sh_mobile.c
index dd4df961d8eb..554bd79e0891 100644
--- a/drivers/i2c/busses/i2c-sh_mobile.c
+++ b/drivers/i2c/busses/i2c-sh_mobile.c
@@ -2,8 +2,7 @@
/*
* SuperH Mobile I2C Controller
*
- * Copyright (C) 2014 Wolfram Sang <wsa@sang-engineering.com>
- *
+ * Copyright (C) 2014-19 Wolfram Sang <wsa@sang-engineering.com>
* Copyright (C) 2008 Magnus Damm
*
* Portions of the code based on out-of-tree driver i2c-sh7343.c
@@ -373,6 +372,7 @@ static int sh_mobile_i2c_isr_rx(struct sh_mobile_i2c_data *pd)
unsigned char data;
int real_pos;
+ /* switch from TX (address) to RX (data) adds two interrupts */
real_pos = pd->pos - 2;
if (pd->pos == -1) {
@@ -717,8 +717,7 @@ static const struct i2c_adapter_quirks sh_mobile_i2c_quirks = {
};
/*
- * r8a7740 chip has lasting errata on I2C I/O pad reset.
- * this is work-around for it.
+ * r8a7740 has an errata regarding I2C I/O pad reset needing this workaround.
*/
static int sh_mobile_i2c_r8a7740_workaround(struct sh_mobile_i2c_data *pd)
{