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/linux-4.1.27/drivers/i2c/busses/
Di2c-rk3x.c466 unsigned long min_low_div, min_high_div; in rk3x_i2c_calc_divs() local
540 min_low_div = DIV_ROUND_UP(clk_rate_khz * min_low_ns, 8 * 1000000); in rk3x_i2c_calc_divs()
542 min_div_for_hold = (min_low_div + min_high_div); in rk3x_i2c_calc_divs()
550 if (min_low_div > max_low_div) { in rk3x_i2c_calc_divs()
553 min_low_div, max_low_div); in rk3x_i2c_calc_divs()
554 max_low_div = min_low_div; in rk3x_i2c_calc_divs()
562 *div_low = min_low_div; in rk3x_i2c_calc_divs()
587 if (ideal_low_div > min_low_div + extra_div) in rk3x_i2c_calc_divs()
588 ideal_low_div = min_low_div + extra_div; in rk3x_i2c_calc_divs()
591 extra_low_div = ideal_low_div - min_low_div; in rk3x_i2c_calc_divs()