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| author | Patrick Delaunay <patrick.delaunay@foss.st.com> | 2021-08-03 13:05:15 +0300 |
|---|---|---|
| committer | Patrice Chotard <patrice.chotard@foss.st.com> | 2021-10-08 09:42:41 +0300 |
| commit | c31cf40096f9187d2f11e4ed4a102b9dd3ac98c2 (patch) | |
| tree | 943c3fde6b8c107534ccf8652ef115592fcdf6de /drivers/i2c/stm32f7_i2c.c | |
| parent | 6338b458887021dbea718d7bee973569a2e62bf5 (diff) | |
| download | u-boot-c31cf40096f9187d2f11e4ed4a102b9dd3ac98c2.tar.xz | |
i2c: stm32f7: compute i2cclk only one time
Compute i2cclk only one time in stm32_i2c_compute_timing()
and remove setup parameter (accessible in i2c_priv).
Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Signed-off-by: Patrice Chotard <patrice.chotard@foss.st.com>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
Diffstat (limited to 'drivers/i2c/stm32f7_i2c.c')
| -rw-r--r-- | drivers/i2c/stm32f7_i2c.c | 18 |
1 files changed, 8 insertions, 10 deletions
diff --git a/drivers/i2c/stm32f7_i2c.c b/drivers/i2c/stm32f7_i2c.c index 2b2dae67a3..c6ae65badb 100644 --- a/drivers/i2c/stm32f7_i2c.c +++ b/drivers/i2c/stm32f7_i2c.c @@ -507,14 +507,13 @@ static int stm32_i2c_xfer(struct udevice *bus, struct i2c_msg *msg, return 0; } -static int stm32_i2c_compute_solutions(struct stm32_i2c_setup *setup, +static int stm32_i2c_compute_solutions(u32 i2cclk, + struct stm32_i2c_setup *setup, const struct stm32_i2c_spec *specs, struct list_head *solutions) { struct stm32_i2c_timings *v; u32 p_prev = STM32_PRESC_MAX; - u32 i2cclk = DIV_ROUND_CLOSEST(STM32_NSEC_PER_SEC, - setup->clock_src); u32 af_delay_min, af_delay_max; u16 p, l, a; int sdadel_min, sdadel_max, scldel_min; @@ -582,7 +581,8 @@ static int stm32_i2c_compute_solutions(struct stm32_i2c_setup *setup, return ret; } -static int stm32_i2c_choose_solution(struct stm32_i2c_setup *setup, +static int stm32_i2c_choose_solution(u32 i2cclk, + struct stm32_i2c_setup *setup, const struct stm32_i2c_spec *specs, struct list_head *solutions, struct stm32_i2c_timings *s) @@ -591,8 +591,6 @@ static int stm32_i2c_choose_solution(struct stm32_i2c_setup *setup, u32 i2cbus = DIV_ROUND_CLOSEST(STM32_NSEC_PER_SEC, setup->speed_freq); u32 clk_error_prev = i2cbus; - u32 i2cclk = DIV_ROUND_CLOSEST(STM32_NSEC_PER_SEC, - setup->clock_src); u32 clk_min, clk_max; u32 af_delay_min; u32 dnf_delay; @@ -679,9 +677,9 @@ static const struct stm32_i2c_spec *get_specs(u32 rate) } static int stm32_i2c_compute_timing(struct stm32_i2c_priv *i2c_priv, - struct stm32_i2c_setup *setup, struct stm32_i2c_timings *output) { + struct stm32_i2c_setup *setup = &i2c_priv->setup; const struct stm32_i2c_spec *specs; struct stm32_i2c_timings *v, *_v; struct list_head solutions; @@ -712,11 +710,11 @@ static int stm32_i2c_compute_timing(struct stm32_i2c_priv *i2c_priv, } INIT_LIST_HEAD(&solutions); - ret = stm32_i2c_compute_solutions(setup, specs, &solutions); + ret = stm32_i2c_compute_solutions(i2cclk, setup, specs, &solutions); if (ret) goto exit; - ret = stm32_i2c_choose_solution(setup, specs, &solutions, output); + ret = stm32_i2c_choose_solution(i2cclk, setup, specs, &solutions, output); if (ret) goto exit; @@ -761,7 +759,7 @@ static int stm32_i2c_setup_timing(struct stm32_i2c_priv *i2c_priv, } do { - ret = stm32_i2c_compute_timing(i2c_priv, setup, timing); + ret = stm32_i2c_compute_timing(i2c_priv, timing); if (ret) { log_debug("failed to compute I2C timings.\n"); if (setup->speed_freq > I2C_SPEED_STANDARD_RATE) { |