openwrt/target/linux/generic/backport-5.4/803-v5.8-i2c-pxa-use-official-address-byte-helper.patch
Adrian Schmutzler 807366af38 kernel: drop backported gpio emulated open drain output fix
This patch has been backported to stable kernel 5.4 already.

Remove our local patch explicitly now, as by applying the patch
(or refreshing) the relevant code is actually added a second time.

Refresh remaining patches as well.

Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
2020-05-25 21:10:44 +02:00

60 lines
1.8 KiB
Diff

From: Russell King <rmk+kernel@armlinux.org.uk>
Bcc: linux@mail.armlinux.org.uk
Cc: linux-i2c@vger.kernel.org
Subject: [PATCH 01/17] i2c: pxa: use official address byte helper
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i2c-pxa was created before i2c_8bit_addr_from_msg() was implemented,
and used its own i2c_pxa_addr_byte() which is functionally the same.
Sadly, it was never updated to use this new helper. Switch it over.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
---
drivers/i2c/busses/i2c-pxa.c | 21 +++++++--------------
1 file changed, 7 insertions(+), 14 deletions(-)
--- a/drivers/i2c/busses/i2c-pxa.c
+++ b/drivers/i2c/busses/i2c-pxa.c
@@ -675,16 +675,6 @@ static void i2c_pxa_slave_stop(struct px
* PXA I2C Master mode
*/
-static inline unsigned int i2c_pxa_addr_byte(struct i2c_msg *msg)
-{
- unsigned int addr = (msg->addr & 0x7f) << 1;
-
- if (msg->flags & I2C_M_RD)
- addr |= 1;
-
- return addr;
-}
-
static inline void i2c_pxa_start_message(struct pxa_i2c *i2c)
{
u32 icr;
@@ -692,8 +682,8 @@ static inline void i2c_pxa_start_message
/*
* Step 1: target slave address into IDBR
*/
- writel(i2c_pxa_addr_byte(i2c->msg), _IDBR(i2c));
- i2c->req_slave_addr = i2c_pxa_addr_byte(i2c->msg);
+ i2c->req_slave_addr = i2c_8bit_addr_from_msg(i2c->msg);
+ writel(i2c->req_slave_addr, _IDBR(i2c));
/*
* Step 2: initiate the write.
@@ -1006,8 +996,8 @@ static void i2c_pxa_irq_txempty(struct p
/*
* Write the next address.
*/
- writel(i2c_pxa_addr_byte(i2c->msg), _IDBR(i2c));
- i2c->req_slave_addr = i2c_pxa_addr_byte(i2c->msg);
+ i2c->req_slave_addr = i2c_8bit_addr_from_msg(i2c->msg);
+ writel(i2c->req_slave_addr, _IDBR(i2c));
/*
* And trigger a repeated start, and send the byte.