From: Daniel Scheller <d.scheller@gmx.net>
Date: Wed, 29 Mar 2017 16:43:12 +0000 (-0300)
Subject: [media] ddbridge: add i2c_read_regs()
X-Git-Tag: v4.14-rc1~332^2~124
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=6b1256b7becbf737cf220d011b0f732136ef63a5;p=platform%2Fkernel%2Flinux-rpi.git

[media] ddbridge: add i2c_read_regs()

Adds new i2c_read_regs() function and make i2c_read_reg() wrap into this
with len=1. Required for the tuner_tda18212_ping() and XO2 handling
functions (part of the Sony CXD28xx support patch series).

Signed-off-by: Daniel Scheller <d.scheller@gmx.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
---

diff --git a/drivers/media/pci/ddbridge/ddbridge-core.c b/drivers/media/pci/ddbridge/ddbridge-core.c
index 09b5338..f2ec7a9 100644
--- a/drivers/media/pci/ddbridge/ddbridge-core.c
+++ b/drivers/media/pci/ddbridge/ddbridge-core.c
@@ -54,15 +54,21 @@ static int i2c_read(struct i2c_adapter *adapter, u8 adr, u8 *val)
 	return (i2c_transfer(adapter, msgs, 1) == 1) ? 0 : -1;
 }
 
-static int i2c_read_reg(struct i2c_adapter *adapter, u8 adr, u8 reg, u8 *val)
+static int i2c_read_regs(struct i2c_adapter *adapter,
+			 u8 adr, u8 reg, u8 *val, u8 len)
 {
 	struct i2c_msg msgs[2] = {{.addr = adr,  .flags = 0,
 				   .buf  = &reg, .len   = 1 },
 				  {.addr = adr,  .flags = I2C_M_RD,
-				   .buf  = val,  .len   = 1 } };
+				   .buf  = val,  .len   = len } };
 	return (i2c_transfer(adapter, msgs, 2) == 2) ? 0 : -1;
 }
 
+static int i2c_read_reg(struct i2c_adapter *adapter, u8 adr, u8 reg, u8 *val)
+{
+	return i2c_read_regs(adapter, adr, reg, val, 1);
+}
+
 static int i2c_read_reg16(struct i2c_adapter *adapter, u8 adr,
 			  u16 reg, u8 *val)
 {