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authorNicola Corna <nicola@corna.info>2015-10-29 12:34:24 +0100
committerWolfram Sang <wsa@the-dreams.de>2015-11-30 18:37:25 +0100
commita94d306b71a5202cb928a7a1328dedab4fe0e968 (patch)
tree3f5fab1ee6e2e9a06561576c21c100970af205c0 /drivers/i2c
parenti2c: add i2c quirk flag for unsupported clock stretching (diff)
downloadlinux-a94d306b71a5202cb928a7a1328dedab4fe0e968.tar.xz
linux-a94d306b71a5202cb928a7a1328dedab4fe0e968.zip
i2c: algo-bit: add I2C_AQ_NO_CLK_STRETCH
Add I2C_AQ_NO_CLK_STRETCH to drivers/i2c/algos/i2c-algo-bit.c when getscl is not available. Signed-off-by: Nicola Corna <nicola@corna.info> Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Diffstat (limited to 'drivers/i2c')
-rw-r--r--drivers/i2c/algos/i2c-algo-bit.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/i2c/algos/i2c-algo-bit.c b/drivers/i2c/algos/i2c-algo-bit.c
index 899bede81b31..9d233bbde5e1 100644
--- a/drivers/i2c/algos/i2c-algo-bit.c
+++ b/drivers/i2c/algos/i2c-algo-bit.c
@@ -617,6 +617,10 @@ const struct i2c_algorithm i2c_bit_algo = {
};
EXPORT_SYMBOL(i2c_bit_algo);
+const struct i2c_adapter_quirks i2c_bit_quirk_no_clk_stretch = {
+ .flags = I2C_AQ_NO_CLK_STRETCH,
+};
+
/*
* registering functions to load algorithms at runtime
*/
@@ -635,6 +639,8 @@ static int __i2c_bit_add_bus(struct i2c_adapter *adap,
/* register new adapter to i2c module... */
adap->algo = &i2c_bit_algo;
adap->retries = 3;
+ if (bit_adap->getscl == NULL)
+ adap->quirks = &i2c_bit_quirk_no_clk_stretch;
ret = add_adapter(adap);
if (ret < 0)