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Diffstat (limited to 'target/linux/bcm27xx/patches-6.1/950-0737-i2c-bcm2835-Implement-I2C_M_IGNORE_NAK.patch')
-rw-r--r--target/linux/bcm27xx/patches-6.1/950-0737-i2c-bcm2835-Implement-I2C_M_IGNORE_NAK.patch61
1 files changed, 0 insertions, 61 deletions
diff --git a/target/linux/bcm27xx/patches-6.1/950-0737-i2c-bcm2835-Implement-I2C_M_IGNORE_NAK.patch b/target/linux/bcm27xx/patches-6.1/950-0737-i2c-bcm2835-Implement-I2C_M_IGNORE_NAK.patch
deleted file mode 100644
index 7238b0293d..0000000000
--- a/target/linux/bcm27xx/patches-6.1/950-0737-i2c-bcm2835-Implement-I2C_M_IGNORE_NAK.patch
+++ /dev/null
@@ -1,61 +0,0 @@
-From 5faad0781d619f13723886e36dfed3ea7eeff00f Mon Sep 17 00:00:00 2001
-From: Dave Stevenson <dave.stevenson@raspberrypi.com>
-Date: Tue, 23 May 2023 14:31:03 +0100
-Subject: [PATCH] i2c-bcm2835: Implement I2C_M_IGNORE_NAK
-
-Now that transfers aren't aborted immediately (and uncleanly) on
-errors, and the FIFOs are always drained after all transfers, we
-can implement I2C_M_IGNORE_NAK by ignoring the returned error
-value.
-
-Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
----
- drivers/i2c/busses/i2c-bcm2835.c | 11 +++++++++--
- 1 file changed, 9 insertions(+), 2 deletions(-)
-
---- a/drivers/i2c/busses/i2c-bcm2835.c
-+++ b/drivers/i2c/busses/i2c-bcm2835.c
-@@ -443,6 +443,7 @@ static int bcm2835_i2c_xfer(struct i2c_a
- {
- struct bcm2835_i2c_dev *i2c_dev = i2c_get_adapdata(adap);
- unsigned long time_left;
-+ bool ignore_nak = false;
- int i;
-
- if (debug)
-@@ -452,12 +453,15 @@ static int bcm2835_i2c_xfer(struct i2c_a
- for (i = 0; i < num; i++)
- bcm2835_debug_print_msg(i2c_dev, &msgs[i], i + 1, num, __func__);
-
-- for (i = 0; i < (num - 1); i++)
-+ for (i = 0; i < (num - 1); i++) {
- if (msgs[i].flags & I2C_M_RD) {
- dev_warn_once(i2c_dev->dev,
- "only one read message supported, has to be last\n");
- return -EOPNOTSUPP;
- }
-+ if (msgs[i].flags & I2C_M_IGNORE_NAK)
-+ ignore_nak = true;
-+ }
-
- i2c_dev->curr_msg = msgs;
- i2c_dev->num_msgs = num;
-@@ -471,6 +475,9 @@ static int bcm2835_i2c_xfer(struct i2c_a
-
- bcm2835_i2c_finish_transfer(i2c_dev);
-
-+ if (ignore_nak)
-+ i2c_dev->msg_err &= ~BCM2835_I2C_S_ERR;
-+
- if (debug > 1 || (debug && (!time_left || i2c_dev->msg_err)))
- bcm2835_debug_print(i2c_dev);
- i2c_dev->debug_num_msgs = 0;
-@@ -497,7 +504,7 @@ static int bcm2835_i2c_xfer(struct i2c_a
-
- static u32 bcm2835_i2c_func(struct i2c_adapter *adap)
- {
-- return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL;
-+ return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL | I2C_FUNC_PROTOCOL_MANGLING;
- }
-
- static const struct i2c_algorithm bcm2835_i2c_algo = {