On Wed, 2017-03-08 at 07:44 +0100, Heiner Kallweit wrote: > We don't have to parse the DT manually to retrieve the bus frequency > and we don't have to maintain an own default for the bus frequency. > Let the i2c core do this for us. > > Signed-off-by: Heiner Kallweit <hkallweit1@xxxxxxxxx> > --- > drivers/i2c/busses/i2c-meson.c | 13 +++++-------- > 1 file changed, 5 insertions(+), 8 deletions(-) > > diff --git a/drivers/i2c/busses/i2c-meson.c b/drivers/i2c/busses/i2c- > meson.c > index 50059d09..5e243efa 100644 > --- a/drivers/i2c/busses/i2c-meson.c > +++ b/drivers/i2c/busses/i2c-meson.c > @@ -38,7 +38,6 @@ > #define REG_CTRL_CLKDIV_MASK ((BIT(10) - 1) << > REG_CTRL_CLKDIV_SHIFT) > > #define I2C_TIMEOUT_MS 500 > -#define DEFAULT_FREQ 100000 > > enum { > TOKEN_END = 0, > @@ -73,7 +72,7 @@ enum { > * @error: Flag set when an error is received > * @lock: To avoid race conditions between irq handler and > xfer code > * @done: Completion used to wait for transfer termination > - * @frequency: Operating frequency of I2C bus clock > + * @timings: Struct including the bus frequency > * @tokens: Sequence of tokens to be written to the device > * @num_tokens: Number of tokens > */ > @@ -92,7 +91,7 @@ struct meson_i2c { > > spinlock_t lock; > struct completion done; > - unsigned int frequency; > + struct i2c_timings timings; > u32 tokens[2]; > int num_tokens; > }; > @@ -136,12 +135,12 @@ static void meson_i2c_set_clk_div(struct > meson_i2c *i2c) > unsigned long clk_rate = clk_get_rate(i2c->clk); > unsigned int div; > > - div = DIV_ROUND_UP(clk_rate, i2c->frequency * 4); > + div = DIV_ROUND_UP(clk_rate, i2c->timings.bus_freq_hz * 4); > meson_i2c_set_mask(i2c, REG_CTRL, REG_CTRL_CLKDIV_MASK, > div << REG_CTRL_CLKDIV_SHIFT); > > dev_dbg(i2c->dev, "%s: clk %lu, freq %u, div %u\n", > __func__, > - clk_rate, i2c->frequency, div); > + clk_rate, i2c->timings.bus_freq_hz, div); > } > > static void meson_i2c_get_data(struct meson_i2c *i2c, char *buf, int > len) > @@ -396,9 +395,7 @@ static int meson_i2c_probe(struct platform_device > *pdev) > if (!i2c) > return -ENOMEM; > > - if (of_property_read_u32(pdev->dev.of_node, "clock- > frequency", > - &i2c->frequency)) > - i2c->frequency = DEFAULT_FREQ; > + i2c_parse_fw_timings(&pdev->dev, &i2c->timings, true); > > i2c->dev = &pdev->dev; > platform_set_drvdata(pdev, i2c); Reviewed-by: Jerome Brunet <jbrunet@xxxxxxxxxxxx> -- To unsubscribe from this list: send the line "unsubscribe linux-i2c" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html