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Searched refs:prescaler (Results 1 – 25 of 46) sorted by relevance

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/Linux-v5.4/drivers/pwm/
Dpwm-sun4i.c112 unsigned int prescaler; in sun4i_pwm_get_state() local
120 prescaler = 1; in sun4i_pwm_get_state()
122 prescaler = prescaler_table[PWM_REG_PRESCAL(val, pwm->hwpwm)]; in sun4i_pwm_get_state()
124 if (prescaler == 0) in sun4i_pwm_get_state()
140 tmp = prescaler * NSEC_PER_SEC * PWM_REG_DTY(val); in sun4i_pwm_get_state()
143 tmp = prescaler * NSEC_PER_SEC * PWM_REG_PRD(val); in sun4i_pwm_get_state()
152 unsigned int pval, prescaler = 0; in sun4i_pwm_calculate() local
158 prescaler = PWM_PRESCAL_MASK; in sun4i_pwm_calculate()
168 prescaler = 0; in sun4i_pwm_calculate()
171 if (prescaler == 0) { in sun4i_pwm_calculate()
[all …]
Dpwm-renesas-tpu.c76 unsigned int prescaler; member
176 pwm->prescaler); in tpu_pwm_timer_start()
225 pwm->prescaler = 0; in tpu_pwm_request()
250 unsigned int prescaler; in tpu_pwm_config() local
263 for (prescaler = 0; prescaler < ARRAY_SIZE(prescalers); ++prescaler) { in tpu_pwm_config()
264 period = clk_rate / prescalers[prescaler] in tpu_pwm_config()
270 if (prescaler == ARRAY_SIZE(prescalers) || period == 0) { in tpu_pwm_config()
276 duty = clk_rate / prescalers[prescaler] in tpu_pwm_config()
286 clk_rate, prescalers[prescaler], period, duty); in tpu_pwm_config()
288 if (pwm->prescaler == prescaler && pwm->period == period) in tpu_pwm_config()
[all …]
Dpwm-jz4740.c96 unsigned int prescaler = 0; in jz4740_pwm_apply() local
103 while (period > 0xffff && prescaler < 6) { in jz4740_pwm_apply()
105 ++prescaler; in jz4740_pwm_apply()
108 if (prescaler == 6) in jz4740_pwm_apply()
124 ctrl = JZ_TIMER_CTRL_PRESCALER(prescaler) | JZ_TIMER_CTRL_SRC_EXT | in jz4740_pwm_apply()
Dpwm-rockchip.c49 unsigned int prescaler; member
78 tmp *= pc->data->prescaler * NSEC_PER_SEC; in rockchip_pwm_get_state()
82 tmp *= pc->data->prescaler * NSEC_PER_SEC; in rockchip_pwm_get_state()
118 pc->data->prescaler * NSEC_PER_SEC); in rockchip_pwm_config()
121 duty = DIV_ROUND_CLOSEST_ULL(div, pc->data->prescaler * NSEC_PER_SEC); in rockchip_pwm_config()
234 .prescaler = 2,
247 .prescaler = 1,
261 .prescaler = 1,
275 .prescaler = 1,
Dpwm-stm32.c323 unsigned int prescaler = 0; in stm32_pwm_config() local
333 prescaler++; in stm32_pwm_config()
335 do_div(div, prescaler + 1); in stm32_pwm_config()
340 if (prescaler > MAX_TIM_PSC) in stm32_pwm_config()
353 if ((psc != prescaler) || (arr != prd - 1)) in stm32_pwm_config()
357 regmap_write(priv->regmap, TIM_PSC, prescaler); in stm32_pwm_config()
Dpwm-imx27.c122 u32 period, prescaler, pwm_clk, val; in pwm_imx27_get_state() local
148 prescaler = MX3_PWMCR_PRESCALER_GET(val); in pwm_imx27_get_state()
150 pwm_clk = DIV_ROUND_CLOSEST_ULL(pwm_clk, prescaler); in pwm_imx27_get_state()
/Linux-v5.4/drivers/clocksource/
Dtimer-stm32.c209 int prescaler = 1; in stm32_timer_set_prescaler() local
212 prescaler = DIV_ROUND_CLOSEST(timer_of_rate(to), in stm32_timer_set_prescaler()
219 prescaler = prescaler < TIM_PSC_MAX ? prescaler : TIM_PSC_MAX; in stm32_timer_set_prescaler()
222 writel_relaxed(prescaler - 1, timer_of_base(to) + TIM_PSC); in stm32_timer_set_prescaler()
227 to->of_clk.rate = DIV_ROUND_CLOSEST(to->of_clk.rate, prescaler); in stm32_timer_set_prescaler()
Dtimer-ti-dm.c638 int prescaler) in omap_dm_timer_set_prescaler() argument
642 if (unlikely(!timer) || prescaler < -1 || prescaler > 7) in omap_dm_timer_set_prescaler()
648 if (prescaler >= 0) { in omap_dm_timer_set_prescaler()
650 l |= prescaler << 2; in omap_dm_timer_set_prescaler()
/Linux-v5.4/drivers/watchdog/
Dmpc8xxx_wdt.c44 int prescaler; member
186 ddata->swtc = min(ddata->wdd.timeout * freq / wdt_type->prescaler, in mpc8xxx_wdt_probe()
197 ddata->wdd.max_hw_heartbeat_ms = (ddata->swtc * wdt_type->prescaler) / in mpc8xxx_wdt_probe()
219 .prescaler = 0x10000,
226 .prescaler = 0x10000,
234 .prescaler = 0x800,
Dcadence_wdt.c78 u32 prescaler; member
186 count = (wdd->timeout * (clock_f / wdt->prescaler)) / in cdns_wdt_start()
354 wdt->prescaler = CDNS_WDT_PRESCALE_512; in cdns_wdt_probe()
357 wdt->prescaler = CDNS_WDT_PRESCALE_4096; in cdns_wdt_probe()
Dkempld_wdt.c135 u32 prescaler; in kempld_wdt_set_stage_timeout() local
141 prescaler = kempld_prescaler[PRESCALER_21]; in kempld_wdt_set_stage_timeout()
147 remainder = do_div(stage_timeout64, prescaler); in kempld_wdt_set_stage_timeout()
177 u32 prescaler; in kempld_wdt_get_timeout() local
186 prescaler = kempld_prescaler[STAGE_CFG_GET_PRESCALER(stage_cfg)]; in kempld_wdt_get_timeout()
188 stage_timeout = (stage_timeout & stage->mask) * prescaler; in kempld_wdt_get_timeout()
/Linux-v5.4/arch/powerpc/sysdev/
Dfsl_gtm.c170 unsigned int prescaler; in gtm_set_ref_timer16() local
181 prescaler = gtm->clock / frequency; in gtm_set_ref_timer16()
187 if (prescaler > max_prescaler) in gtm_set_ref_timer16()
190 if (prescaler > max_prescaler / 16) { in gtm_set_ref_timer16()
192 prescaler /= 16; in gtm_set_ref_timer16()
195 if (prescaler <= 256) { in gtm_set_ref_timer16()
197 sps = prescaler - 1; in gtm_set_ref_timer16()
200 sps = prescaler / 256 - 1; in gtm_set_ref_timer16()
/Linux-v5.4/Documentation/ABI/testing/
Dsysfs-bus-counter-ftm-quaddec9 What: /sys/bus/counter/devices/counterX/countY/prescaler
13 Configure the prescaler value associated with Count Y.
15 prescaler (i.e. a counter). This acts like a clock
/Linux-v5.4/Documentation/devicetree/bindings/power/supply/
Dltc2941.txt16 - lltc,prescaler-exponent: The prescaler exponent as explained in the datasheet.
27 lltc,prescaler-exponent = <5>; /* 2^(2*5) = 1024 */
/Linux-v5.4/arch/powerpc/kernel/
Dudbg_16550.c126 unsigned int dll, dlm, divisor, prescaler, speed; in udbg_probe_uart_speed() local
141 prescaler = 4; in udbg_probe_uart_speed()
143 prescaler = 1; in udbg_probe_uart_speed()
149 speed = (clock / prescaler) / (divisor * 16); in udbg_probe_uart_speed()
/Linux-v5.4/drivers/i2c/busses/
Di2c-mpc.c360 u32 prescaler = 1; in mpc_i2c_get_prescaler_8xxx() local
375 prescaler = 1; in mpc_i2c_get_prescaler_8xxx()
379 prescaler = mpc_i2c_get_sec_cfg_8xxx() ? 3 : 2; in mpc_i2c_get_prescaler_8xxx()
382 prescaler = 2; in mpc_i2c_get_prescaler_8xxx()
385 return prescaler; in mpc_i2c_get_prescaler_8xxx()
392 u32 prescaler = mpc_i2c_get_prescaler_8xxx(); in mpc_i2c_get_fdr_8xxx() local
398 *real_clk = fsl_get_sys_freq() / prescaler / (16 * 3072); in mpc_i2c_get_fdr_8xxx()
402 divider = fsl_get_sys_freq() / clock / prescaler; in mpc_i2c_get_fdr_8xxx()
417 *real_clk = fsl_get_sys_freq() / prescaler / div->divider; in mpc_i2c_get_fdr_8xxx()
/Linux-v5.4/Documentation/devicetree/bindings/mfd/
Dstm32-timers.txt5 prescaler, break input feature, PWM outputs and complementary PWM ouputs channels.
7 programmable prescaler and PWM outputs.
8 - basic timers consist of a 16-bit auto-reload counter driven by a programmable prescaler.
/Linux-v5.4/arch/arm/mach-omap2/
Dvc.c432 u32 prescaler; in omap4_calc_volt_ramp() local
441 prescaler = 0; in omap4_calc_volt_ramp()
448 prescaler++; in omap4_calc_volt_ramp()
454 prescaler++; in omap4_calc_volt_ramp()
460 prescaler++; in omap4_calc_volt_ramp()
472 return (prescaler << OMAP4430_RAMP_UP_PRESCAL_SHIFT) | in omap4_calc_volt_ramp()
/Linux-v5.4/drivers/thermal/st/
Dstm_thermal.c192 u32 prescaler; in stm_thermal_calibration() local
199 prescaler = 0; in stm_thermal_calibration()
202 while (prescaler <= clk_freq) in stm_thermal_calibration()
203 prescaler++; in stm_thermal_calibration()
212 value |= (prescaler << HSREF_CLK_DIV_POS); in stm_thermal_calibration()
/Linux-v5.4/drivers/iio/frequency/
Dadf4350.c133 u32 div_gcd, prescaler, chspc; in adf4350_set_freq() local
141 prescaler = ADF4350_REG1_PRESCALER; in adf4350_set_freq()
144 prescaler = 0; in adf4350_set_freq()
198 1 << st->r4_rf_div_sel, prescaler ? "8/9" : "4/5", in adf4350_set_freq()
206 prescaler; in adf4350_set_freq()
/Linux-v5.4/drivers/mmc/host/
Dmxcmmc.c793 int prescaler = 0; in mxcmci_set_clk_rate() local
796 while (prescaler <= 0x800) { in mxcmci_set_clk_rate()
802 if (prescaler) in mxcmci_set_clk_rate()
803 x /= (prescaler * 2); in mxcmci_set_clk_rate()
811 if (prescaler == 0) in mxcmci_set_clk_rate()
812 prescaler = 1; in mxcmci_set_clk_rate()
814 prescaler <<= 1; in mxcmci_set_clk_rate()
817 mxcmci_writew(host, (prescaler << 4) | divider, MMC_REG_CLK_RATE); in mxcmci_set_clk_rate()
820 prescaler, divider, clk_in, clk_ios); in mxcmci_set_clk_rate()
Ds3cmci.h31 u8 prescaler; member
/Linux-v5.4/drivers/usb/serial/
Dkeyspan.c69 u8 *prescaler, int portnum);
73 u8 *prescaler, int portnum);
77 u8 *prescaler, int portnum);
81 u8 *prescaler, int portnum);
196 u8 *rate_hi, u8 *rate_low, u8 *prescaler,
1857 u8 *rate_low, u8 *prescaler, int portnum) in keyspan_usa19_calc_baud() argument
1898 u8 *rate_low, u8 *prescaler, int portnum) in keyspan_usa19hs_calc_baud() argument
1934 u8 *rate_low, u8 *prescaler, int portnum) in keyspan_usa19w_calc_baud() argument
1988 if (prescaler) { in keyspan_usa19w_calc_baud()
1989 *prescaler = best_prescaler; in keyspan_usa19w_calc_baud()
[all …]
Dkeyspan_usa26msg.h155 prescaler; // BOTH: specified as N/8; values 8-ff are valid member
/Linux-v5.4/drivers/iio/trigger/
Dstm32-timer-trigger.c108 int prescaler = 0; in stm32_timer_start() local
123 prescaler++; in stm32_timer_start()
125 do_div(div, (prescaler + 1)); in stm32_timer_start()
129 if (prescaler > MAX_TIM_PSC) { in stm32_timer_start()
143 regmap_write(priv->regmap, TIM_PSC, prescaler); in stm32_timer_start()

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