From: Rustam Adilov Date: Wed, 1 Apr 2026 18:06:43 +0000 (+0500) Subject: i2c: rtl9300: introduce F_BUSY to the reg_fields struct X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=55284a806b63a412846b9ecd3846f2639eaeaff4;p=thirdparty%2Fkernel%2Fstable.git i2c: rtl9300: introduce F_BUSY to the reg_fields struct In RTL9607C i2c controller the busy check operation is done on the separate bit of the command register as opposed to self clearing command trigger bit on the rtl9300 and rtl9310 i2c controllers. Introduce a new F_BUSY field to the reg_fields struct for that and change the regmap read poll function to use F_BUSY instead of I2C_TRIG. Signed-off-by: Rustam Adilov Reviewed-by: Chris Packham Signed-off-by: Andi Shyti Link: https://lore.kernel.org/r/20260401180648.337834-4-adilov@disroot.org --- diff --git a/drivers/i2c/busses/i2c-rtl9300.c b/drivers/i2c/busses/i2c-rtl9300.c index 2cada6038b44..e40b4692a3fa 100644 --- a/drivers/i2c/busses/i2c-rtl9300.c +++ b/drivers/i2c/busses/i2c-rtl9300.c @@ -53,6 +53,7 @@ enum rtl9300_i2c_reg_fields { F_SCL_SEL, F_SDA_OUT_SEL, F_SDA_SEL, + F_BUSY, /* keep last */ F_NUM_FIELDS @@ -262,7 +263,7 @@ static int rtl9300_i2c_do_xfer(struct rtl9300_i2c *i2c, struct rtl9300_i2c_xfer if (ret) return ret; - ret = regmap_field_read_poll_timeout(i2c->fields[F_I2C_TRIG], val, !val, 100, 100000); + ret = regmap_field_read_poll_timeout(i2c->fields[F_BUSY], val, !val, 100, 100000); if (ret) return ret; @@ -505,6 +506,7 @@ static const struct rtl9300_i2c_drv_data rtl9300_i2c_drv_data = { [F_MEM_ADDR_WIDTH] = MST_REG_FIELD(RTL9300_I2C_MST_CTRL2, 2, 3), [F_SCL_FREQ] = MST_REG_FIELD(RTL9300_I2C_MST_CTRL2, 0, 1), [F_SDA_SEL] = GLB_REG_FIELD(RTL9300_I2C_MST_GLB_CTRL, 0, 7), + [F_BUSY] = MST_REG_FIELD(RTL9300_I2C_MST_CTRL1, 0, 0), }, .select_scl = rtl9300_i2c_select_scl, .rd_reg = RTL9300_I2C_MST_DATA_WORD0, @@ -527,6 +529,7 @@ static const struct rtl9300_i2c_drv_data rtl9310_i2c_drv_data = { [F_I2C_FAIL] = MST_REG_FIELD(RTL9310_I2C_MST_CTRL, 1, 1), [F_I2C_TRIG] = MST_REG_FIELD(RTL9310_I2C_MST_CTRL, 0, 0), [F_MEM_ADDR] = MST_REG_FIELD(RTL9310_I2C_MST_MEMADDR_CTRL, 0, 23), + [F_BUSY] = MST_REG_FIELD(RTL9310_I2C_MST_CTRL, 0, 0), }, .select_scl = rtl9310_i2c_select_scl, .rd_reg = RTL9310_I2C_MST_DATA_CTRL,