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Searched refs:prescale (Results 1 – 25 of 58) sorted by relevance

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/Linux-v5.4/drivers/iio/adc/
Dqcom-vadc-common.c92 const struct vadc_prescale_ratio *prescale,
96 const struct vadc_prescale_ratio *prescale,
100 const struct vadc_prescale_ratio *prescale,
104 const struct vadc_prescale_ratio *prescale,
108 const struct vadc_prescale_ratio *prescale,
182 const struct vadc_prescale_ratio *prescale, in qcom_vadc_scale_volt() argument
190 voltage = voltage * prescale->den; in qcom_vadc_scale_volt()
191 result = div64_s64(voltage, prescale->num); in qcom_vadc_scale_volt()
198 const struct vadc_prescale_ratio *prescale, in qcom_vadc_scale_therm() argument
222 const struct vadc_prescale_ratio *prescale, in qcom_vadc_scale_die_temp() argument
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Dqcom-vadc-common.h147 const struct vadc_prescale_ratio *prescale,
152 int (*scale_fn)(const struct vadc_prescale_ratio *prescale,
157 const struct vadc_prescale_ratio *prescale,
/Linux-v5.4/drivers/pwm/
Dpwm-imx-tpm.c72 u8 prescale; member
95 u32 rate, prescale, period_count, clock_unit; in pwm_imx_tpm_round_state() local
102 prescale = 0; in pwm_imx_tpm_round_state()
104 prescale = ilog2(clock_unit) + 1 - PWM_IMX_TPM_MOD_WIDTH; in pwm_imx_tpm_round_state()
106 if ((!FIELD_FIT(PWM_IMX_TPM_SC_PS, prescale))) in pwm_imx_tpm_round_state()
108 p->prescale = prescale; in pwm_imx_tpm_round_state()
110 period_count = (clock_unit + ((1 << prescale) >> 1)) >> prescale; in pwm_imx_tpm_round_state()
114 tmp = (u64)period_count << prescale; in pwm_imx_tpm_round_state()
142 u32 rate, val, prescale; in pwm_imx_tpm_get_state() local
151 prescale = FIELD_GET(PWM_IMX_TPM_SC_PS, val); in pwm_imx_tpm_get_state()
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Dpwm-sprd.c74 u32 val, duty, prescale; in sprd_pwm_get_state() local
104 prescale = val & SPRD_PWM_PRESCALE_MSK; in sprd_pwm_get_state()
105 tmp = (prescale + 1) * NSEC_PER_SEC * SPRD_PWM_MOD_MAX; in sprd_pwm_get_state()
110 tmp = (prescale + 1) * NSEC_PER_SEC * duty; in sprd_pwm_get_state()
122 u32 prescale, duty; in sprd_pwm_config() local
139 prescale = DIV_ROUND_CLOSEST_ULL(tmp, SPRD_PWM_MOD_MAX) - 1; in sprd_pwm_config()
140 if (prescale > SPRD_PWM_PRESCALE_MSK) in sprd_pwm_config()
141 prescale = SPRD_PWM_PRESCALE_MSK; in sprd_pwm_config()
151 sprd_pwm_write(spc, pwm->hwpwm, SPRD_PWM_PRESCALE, prescale); in sprd_pwm_config()
Dpwm-bcm-iproc.c86 u32 value, prescale; in iproc_pwmc_get_state() local
103 prescale = value >> IPROC_PWM_PRESCALE_SHIFT(pwm->hwpwm); in iproc_pwmc_get_state()
104 prescale &= IPROC_PWM_PRESCALE_MAX; in iproc_pwmc_get_state()
106 multi = NSEC_PER_SEC * (prescale + 1); in iproc_pwmc_get_state()
120 unsigned long prescale = IPROC_PWM_PRESCALE_MIN; in iproc_pwmc_apply() local
140 div = NSEC_PER_SEC * (prescale + 1); in iproc_pwmc_apply()
155 if (++prescale > IPROC_PWM_PRESCALE_MAX) in iproc_pwmc_apply()
164 value |= prescale << IPROC_PWM_PRESCALE_SHIFT(pwm->hwpwm); in iproc_pwmc_apply()
Dpwm-puv3.c41 unsigned long period_cycles, prescale, pv, dc; in puv3_pwm_config() local
53 prescale = (period_cycles - 1) / 1024; in puv3_pwm_config()
54 pv = period_cycles / (prescale + 1) - 1; in puv3_pwm_config()
56 if (prescale > 63) in puv3_pwm_config()
70 writel(prescale, puv3->base + OST_PWM_PWCR); in puv3_pwm_config()
Dpwm-pxa.c65 unsigned long period_cycles, prescale, pv, dc; in pxa_pwm_config() local
78 prescale = (period_cycles - 1) / 1024; in pxa_pwm_config()
79 pv = period_cycles / (prescale + 1) - 1; in pxa_pwm_config()
81 if (prescale > 63) in pxa_pwm_config()
96 writel(prescale, pc->mmio_base + offset + PWMCR); in pxa_pwm_config()
Dpwm-vt8500.c77 unsigned long period_cycles, prescale, pv, dc; in vt8500_pwm_config() local
94 prescale = (period_cycles - 1) / 4096; in vt8500_pwm_config()
95 pv = period_cycles / (prescale + 1) - 1; in vt8500_pwm_config()
99 if (prescale > 1023) { in vt8500_pwm_config()
108 writel(prescale, vt8500->base + REG_SCALAR(pwm->hwpwm)); in vt8500_pwm_config()
Dpwm-spear.c82 unsigned long prescale = PWMCR_MIN_PRESCALE, pv, dc; in spear_pwm_config() local
98 div *= 1 + prescale; in spear_pwm_config()
113 if (++prescale > PWMCR_MAX_PRESCALE) in spear_pwm_config()
129 prescale << PWMCR_PRESCALE_SHIFT); in spear_pwm_config()
Dpwm-sti.c123 unsigned int *prescale) in sti_pwm_get_prescale() argument
149 *prescale = ps; in sti_pwm_get_prescale()
168 unsigned int ncfg, value, prescale = 0; in sti_pwm_config() local
204 ret = sti_pwm_get_prescale(pc, period_ns, &prescale); in sti_pwm_config()
208 value = prescale & PWM_PRESCALE_LOW_MASK; in sti_pwm_config()
214 value = (prescale & PWM_PRESCALE_HIGH_MASK) >> 4; in sti_pwm_config()
239 prescale, period_ns, duty_ns, value); in sti_pwm_config()
Dpwm-bcm-kona.c116 unsigned long prescale = PRESCALE_MIN, pc, dc; in kona_pwmc_config() local
134 div *= 1 + prescale; in kona_pwmc_config()
149 if (++prescale > PRESCALE_MAX) in kona_pwmc_config()
163 value |= prescale << PRESCALE_SHIFT(chan); in kona_pwmc_config()
Dpwm-imx27.c214 unsigned long period_cycles, duty_cycles, prescale; in pwm_imx27_apply() local
230 prescale = period_cycles / 0x10000 + 1; in pwm_imx27_apply()
232 period_cycles /= prescale; in pwm_imx27_apply()
264 cr = MX3_PWMCR_PRESCALER_SET(prescale) | in pwm_imx27_apply()
/Linux-v5.4/drivers/clk/ingenic/
Dtcu.c163 unsigned int prescale; in ingenic_tcu_recalc_rate() local
166 ret = regmap_read(tcu_clk->tcu->map, info->tcsr_reg, &prescale); in ingenic_tcu_recalc_rate()
169 prescale = (prescale & TCU_TCSR_PRESCALE_MASK) >> TCU_TCSR_PRESCALE_LSB; in ingenic_tcu_recalc_rate()
171 return parent_rate >> (prescale * 2); in ingenic_tcu_recalc_rate()
176 u8 prescale; in ingenic_tcu_get_prescale() local
178 for (prescale = 0; prescale < 5; prescale++) in ingenic_tcu_get_prescale()
179 if ((rate >> (prescale * 2)) <= req_rate) in ingenic_tcu_get_prescale()
180 return prescale; in ingenic_tcu_get_prescale()
189 u8 prescale; in ingenic_tcu_round_rate() local
194 prescale = ingenic_tcu_get_prescale(rate, req_rate); in ingenic_tcu_round_rate()
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/Linux-v5.4/drivers/i2c/busses/
Di2c-kempld.c226 long prescale; in kempld_i2c_device_init() local
240 prescale = pld->pld_clock / (bus_frequency * 5) - 1000; in kempld_i2c_device_init()
242 prescale = pld->pld_clock / (bus_frequency * 4) - 3000; in kempld_i2c_device_init()
244 if (prescale < 0) in kempld_i2c_device_init()
245 prescale = 0; in kempld_i2c_device_init()
248 prescale_corr = prescale / 1000; in kempld_i2c_device_init()
249 if (prescale % 1000 >= 500) in kempld_i2c_device_init()
Di2c-imx-lpi2c.c209 u8 prescale, filt, sethold, clkhi, clklo, datavd; in lpi2c_imx_config() local
222 for (prescale = 0; prescale <= 7; prescale++) { in lpi2c_imx_config()
223 clk_cycle = clk_rate / ((1 << prescale) * lpi2c_imx->bitrate) in lpi2c_imx_config()
231 if (prescale > 7) in lpi2c_imx_config()
239 temp = prescale | pincfg << 24; in lpi2c_imx_config()
/Linux-v5.4/arch/powerpc/platforms/52xx/
Dmpc52xx_gpt.c392 u32 prescale; in mpc52xx_gpt_do_start() local
426 prescale = (clocks >> 16) + 1; in mpc52xx_gpt_do_start()
427 do_div(clocks, prescale); in mpc52xx_gpt_do_start()
430 prescale, clocks); in mpc52xx_gpt_do_start()
442 out_be32(&gpt->regs->count, prescale << 16 | clocks); in mpc52xx_gpt_do_start()
496 u64 prescale; in mpc52xx_gpt_timer_period() local
503 prescale = period >> 16; in mpc52xx_gpt_timer_period()
505 if (prescale == 0) in mpc52xx_gpt_timer_period()
506 prescale = 0x10000; in mpc52xx_gpt_timer_period()
507 period = period * prescale * 1000000000ULL; in mpc52xx_gpt_timer_period()
/Linux-v5.4/drivers/gpu/drm/radeon/
Dradeon_i2c.c242 u32 prescale = 0; in radeon_get_i2c_prescale() local
268 prescale = m | (n << 8); in radeon_get_i2c_prescale()
276 prescale = (((sclk * 10)/(4 * 128 * 100) + 1) << 8) + 128; in radeon_get_i2c_prescale()
291 prescale = (127 << 8) + ((sclk * 10) / (4 * 127 * i2c_clock)); in radeon_get_i2c_prescale()
293 prescale = (((sclk * 10)/(4 * 128 * 100) + 1) << 8) + 128; in radeon_get_i2c_prescale()
322 return prescale; in radeon_get_i2c_prescale()
337 u32 prescale; in r100_hw_i2c_xfer() local
345 prescale = radeon_get_i2c_prescale(rdev); in r100_hw_i2c_xfer()
347 reg = ((prescale << RADEON_I2C_PRESCALE_SHIFT) | in r100_hw_i2c_xfer()
590 u32 prescale; in r500_hw_i2c_xfer() local
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/Linux-v5.4/drivers/staging/comedi/drivers/
Ddt3000.c345 unsigned int divider, base, prescale; in dt3k_ns_to_timer() local
350 for (prescale = 0; prescale < 16; prescale++) { in dt3k_ns_to_timer()
351 base = timer_base * (prescale + 1); in dt3k_ns_to_timer()
366 return (prescale << 16) | (divider); in dt3k_ns_to_timer()
370 prescale = 15; in dt3k_ns_to_timer()
371 base = timer_base * (prescale + 1); in dt3k_ns_to_timer()
374 return (prescale << 16) | (divider); in dt3k_ns_to_timer()
/Linux-v5.4/drivers/media/i2c/
Dsaa717x.c807 int task, int prescale) in set_h_prescale() argument
833 if (vals[i].xpsc == prescale) in set_h_prescale()
987 int prescale, h_scale, v_scale; in saa717x_set_fmt() local
1008 prescale = SAA717X_NTSC_WIDTH / fmt->width; in saa717x_set_fmt()
1009 if (prescale == 0) in saa717x_set_fmt()
1010 prescale = 1; in saa717x_set_fmt()
1011 h_scale = 1024 * SAA717X_NTSC_WIDTH / prescale / fmt->width; in saa717x_set_fmt()
1016 set_h_prescale(sd, 0, prescale); in saa717x_set_fmt()
1017 set_h_prescale(sd, 1, prescale); in saa717x_set_fmt()
/Linux-v5.4/drivers/spi/
Dspi-fsl-lpspi.c94 u8 prescale; member
283 temp |= fsl_lpspi->config.prescale << 27; in fsl_lpspi_set_cmd()
323 u8 prescale; in fsl_lpspi_set_bitrate() local
333 for (prescale = 0; prescale < 8; prescale++) { in fsl_lpspi_set_bitrate()
335 (clkdivs[prescale] * config.speed_hz) - 2; in fsl_lpspi_set_bitrate()
337 fsl_lpspi->config.prescale = prescale; in fsl_lpspi_set_bitrate()
342 if (prescale == 8 && scldiv >= 256) in fsl_lpspi_set_bitrate()
349 perclk_rate, config.speed_hz, prescale, scldiv); in fsl_lpspi_set_bitrate()
Dspi-armada-3700.c222 u32 prescale; in a3700_spi_clock_set() local
224 prescale = DIV_ROUND_UP(clk_get_rate(a3700_spi->clk), speed_hz); in a3700_spi_clock_set()
230 if (prescale > 15) in a3700_spi_clock_set()
231 prescale = A3700_SPI_CLK_EVEN_OFFS + DIV_ROUND_UP(prescale, 2); in a3700_spi_clock_set()
236 val = val | (prescale & A3700_SPI_CLK_PRESCALE_MASK); in a3700_spi_clock_set()
239 if (prescale <= 2) { in a3700_spi_clock_set()
/Linux-v5.4/Documentation/devicetree/bindings/hwmon/
Dmax6650.txt13 - maxim,fan-prescale : Pre-scaling value, as per datasheet [1]. Lower values
26 maxim,fan-prescale = <4>;
/Linux-v5.4/drivers/media/pci/cobalt/
Dcobalt-i2c.c309 int prescale; in cobalt_i2c_init() local
315 prescale = ((ALT_CPU_FREQ) / (5 * I2C_FREQUENCY)) - 1; in cobalt_i2c_init()
344 iowrite8(prescale & 0xff, &regs->prerlo); in cobalt_i2c_init()
345 iowrite8((prescale >> 8) & 0xff, &regs->prerhi); in cobalt_i2c_init()
/Linux-v5.4/Documentation/devicetree/bindings/display/
Dcirrus,clps711x-fb.txt12 - ac-prescale : LCD AC bias frequency. This frequency is the required
32 ac-prescale = <17>;
/Linux-v5.4/drivers/media/pci/cx88/
Dcx88-core.c740 static int set_pll(struct cx88_core *core, int prescale, u32 ofreq) in set_pll() argument
747 if (prescale < 2) in set_pll()
748 prescale = 2; in set_pll()
749 if (prescale > 5) in set_pll()
750 prescale = 5; in set_pll()
752 pll = ofreq * 8 * prescale * (u64)(1 << 20); in set_pll()
754 reg = (pll & 0x3ffffff) | (pre[prescale] << 26); in set_pll()
767 prescale, ofreq); in set_pll()
773 dprintk(1, "pll NOT locked [pre=%d,ofreq=%d]\n", prescale, ofreq); in set_pll()

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