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/openbmc/linux/drivers/pwm/
H A Dpwm-stm32.c1 // SPDX-License-Identifier: GPL-2.0
7 * Inspired by timer-stm32.c from Maxime Coquelin
8 * pwm-atmel.c from Bo Shen
12 #include <linux/mfd/stm32-timers.h>
17 #include <linux/pwm.h>
31 struct mutex lock; /* protect pwm config/enable */
50 regmap_read(dev->regmap, TIM_CCER, &ccer); in active_channels()
59 return regmap_write(dev->regmap, TIM_CCR1, value); in write_ccrx()
61 return regmap_write(dev->regmap, TIM_CCR2, value); in write_ccrx()
63 return regmap_write(dev->regmap, TIM_CCR3, value); in write_ccrx()
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H A Dpwm-tiehrpwm.c1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * EHRPWM PWM driver
5 * Copyright (C) 2012 Texas Instruments, Inc. - https://www.ti.com/
10 #include <linux/pwm.h>
94 #define NUM_PWM_CHANNEL 2 /* EHRPWM channels */
133 static void ehrpwm_modify(void __iomem *base, unsigned int offset, u16 mask, in ehrpwm_modify() argument
139 val &= ~mask; in ehrpwm_modify()
140 val |= value & mask; in ehrpwm_modify()
145 * set_prescale_div - Set up the prescaler divider function
187 * Configure PWM output to HIGH/LOW level on counter in configure_polarity()
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H A Dpwm-jz4740.c1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Copyright (C) 2010, Lars-Peter Clausen <lars@metafoo.de>
4 * JZ4740 platform PWM support
7 * - The .apply callback doesn't complete the currently running period before
15 #include <linux/mfd/ingenic-tcu.h>
20 #include <linux/pwm.h>
40 /* Enable all TCU channels for PWM use by default except channels 0/1 */ in jz4740_pwm_can_use_chn()
41 u32 pwm_channels_mask = GENMASK(jz->chip.npwm - 1, 2); in jz4740_pwm_can_use_chn()
43 device_property_read_u32(jz->chip.dev->parent, in jz4740_pwm_can_use_chn()
44 "ingenic,pwm-channels-mask", in jz4740_pwm_can_use_chn()
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H A Dpwm-meson.c1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
3 * PWM controller driver for Amlogic Meson SoCs.
5 * This PWM is only a set of Gates, Dividers and Counters:
6 * PWM output is achieved by calculating a clock that permits calculating
13 * Setting the duty cycle will disable and re-enable the PWM output.
14 * Disabling the PWM stops the output immediately (without waiting for the
17 * The public S912 (GXM) datasheet contains some documentation for this PWM
19 * https://dl.khadas.com/Hardware/VIM2/Datasheet/S912_Datasheet_V0.220170314publicversion-Wesion.pdf
23 * https://dn.odroid.com/S922X/ODROID-N2/Datasheet/S922X_Public_Datasheet_V0.2.pdf
33 #include <linux/clk-provider.h>
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H A Dpwm-microchip-core.c1 // SPDX-License-Identifier: GPL-2.0
5 * Copyright (c) 2021-2023 Microchip Corporation. All rights reserved.
8 * https://www.microsemi.com/document-portal/doc_download/1245275-corepwm-hb
11 * - If the IP block is configured without "shadow registers", all register
16 * will take effective immediately, even for those channels.
19 * - The IP block has no concept of a duty cycle, only rising/falling edges of
28 * - The PWM period is set for the whole IP block not per channel. The driver
29 * will only change the period if no other PWM output is enabled.
42 #include <linux/pwm.h>
71 static void mchp_core_pwm_enable(struct pwm_chip *chip, struct pwm_device *pwm, in mchp_core_pwm_enable() argument
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/openbmc/linux/Documentation/devicetree/bindings/pwm/
H A Dmicrochip,corepwm.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
4 ---
5 $id: http://devicetree.org/schemas/pwm/microchip,corepwm.yaml#
6 $schema: http://devicetree.org/meta-schemas/core.yaml#
11 - Conor Dooley <conor.dooley@microchip.com>
16 https://www.microsemi.com/existing-parts/parts/152118
19 - $ref: pwm.yaml#
24 - const: microchip,corepwm-rtl-v4
32 "#pwm-cells":
37 microchip,sync-update-mask:
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/openbmc/linux/drivers/mfd/
H A Dlp3943.c1 // SPDX-License-Identifier: GPL-2.0-only
10 * LP3943 is an integrated device capable of driving 16 output channels.
11 * It can be used for a GPIO expander and PWM generators.
16 * LP3943 MFD ---- GPIO expander leds-gpio eg) HW enable pin
18 * --- PWM generator leds-pwm eg) PWM input
20 * Internal two PWM channels are used for LED dimming effect.
23 * LEDs can be controlled with legacy leds-gpio(static brightness) or
24 * leds-pwm drivers(dynamic brightness control).
25 * Alternatively, it can be used for generic GPIO and PWM controller.
27 * A PWM is input pin of a backlight device.
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/openbmc/linux/drivers/leds/rgb/
H A Dleds-qcom-lpg.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * Copyright (c) 2017-2022 Linaro Ltd
4 * Copyright (c) 2010-2012, The Linux Foundation. All rights reserved.
9 #include <linux/led-class-multicolor.h>
13 #include <linux/pwm.h>
40 #define PWM_DTEST_REG(x) (0xe2 + (x) - 1)
58 * struct lpg - LPG device context
61 * @lock: used to synchronize LED and pwm callback requests
62 * @pwm: PWM-chip object, if operating in PWM mode
68 * @triled_src: power-source for the TRILED
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/openbmc/linux/drivers/clocksource/
H A Dsamsung_pwm_timer.c1 // SPDX-License-Identifier: GPL-2.0-only
6 * samsung - Common hr-timer support (s3c and s5p)
45 * bits (one channel) after channel 0, so channels have different numbering
49 * in its set of bits is 2 as opposed to 3 for other channels.
79 static struct samsung_pwm_clocksource pwm; variable
92 reg = readl(pwm.base + REG_TCFG0); in samsung_timer_set_prescale()
94 reg |= (prescale - 1) << shift; in samsung_timer_set_prescale()
95 writel(reg, pwm.base + REG_TCFG0); in samsung_timer_set_prescale()
107 bits = (fls(divisor) - 1) - pwm.variant.div_base; in samsung_timer_set_divisor()
111 reg = readl(pwm.base + REG_TCFG1); in samsung_timer_set_divisor()
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H A Dingenic-timer.c1 // SPDX-License-Identifier: GPL-2.0
14 #include <linux/mfd/ingenic-tcu.h>
23 #include <dt-bindings/clock/ingenic,tcu.h>
56 regmap_read(tcu->map, TCU_REG_TCNTc(tcu->cs_channel), &count); in ingenic_tcu_timer_read()
69 return container_of(timer, struct ingenic_tcu, timers[timer->cpu]); in to_ingenic_tcu()
83 regmap_write(tcu->map, TCU_REG_TECR, BIT(timer->channel)); in ingenic_tcu_cevt_set_state_shutdown()
95 return -EINVAL; in ingenic_tcu_cevt_set_next()
97 regmap_write(tcu->map, TCU_REG_TDFRc(timer->channel), next); in ingenic_tcu_cevt_set_next()
98 regmap_write(tcu->map, TCU_REG_TCNTc(timer->channel), 0); in ingenic_tcu_cevt_set_next()
99 regmap_write(tcu->map, TCU_REG_TESR, BIT(timer->channel)); in ingenic_tcu_cevt_set_next()
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/openbmc/linux/Documentation/devicetree/bindings/timer/
H A Dingenic,tcu.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
11 Documentation/arch/mips/ingenic-tcu.rst.
14 - Paul Cercueil <paul@crapouillou.net>
21 - ingenic,jz4740-tcu
22 - ingenic,jz4725b-tcu
23 - ingenic,jz4760-tcu
24 - ingenic,jz4760b-tcu
25 - ingenic,jz4770-tcu
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/openbmc/linux/include/linux/fsl/
H A Dftm.h1 // SPDX-License-Identifier: GPL-2.0
13 #define FTM_OUTINIT 0x5C /* Initial State For Channels Output */
14 #define FTM_OUTMASK 0x60 /* Output Mask */
15 #define FTM_COMBINE 0x64 /* Function For Linked Channels */
18 #define FTM_POL 0x70 /* Channels Polarity */
28 #define FTM_PWMLOAD 0x98 /* FTM PWM Load */
57 * https://community.nxp.com/thread/467648#comment-1010319
/openbmc/linux/arch/arm/boot/dts/intel/pxa/
H A Dpxa3xx.dtsi1 // SPDX-License-Identifier: GPL-2.0
7 (gpio <= 26) ? (0x027c + 4 * (gpio - 3)) : \
8 (gpio <= 98) ? (0x0400 + 4 * (gpio - 27)) : \
9 (gpio <= 127) ? (0x0600 + 4 * (gpio - 99)) : \
18 (gpio <= 26) ? (0x027c + 4 * (gpio - 3)) : \
19 (gpio <= 29) ? (0x0400 + 4 * (gpio - 27)) : \
20 (gpio <= 98) ? (0x0418 + 4 * (gpio - 30)) : \
21 (gpio <= 127) ? (0x0600 + 4 * (gpio - 99)) : \
23 (gpio <= 268) ? (0x052c + 4 * (gpio - 263)) : \
33 (gpio <= 9) ? (0x028c + 4 * (gpio - 5)) : \
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/openbmc/linux/arch/arm64/boot/dts/amlogic/
H A Dmeson-g12a-sei510.dts1 // SPDX-License-Identifier: (GPL-2.0+ OR MIT)
6 /dts-v1/;
8 #include "meson-g12a.dtsi"
9 #include <dt-bindings/gpio/gpio.h>
10 #include <dt-bindings/input/input.h>
11 #include <dt-bindings/gpio/meson-g12a-gpio.h>
12 #include <dt-bindings/sound/meson-g12a-tohdmitx.h>
19 compatible = "adc-keys";
20 io-channels = <&saradc 0>;
21 io-channel-names = "buttons";
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H A Dmeson-g12b-bananapi.dtsi1 // SPDX-License-Identifier: (GPL-2.0+ OR MIT)
8 #include <dt-bindings/input/input.h>
9 #include <dt-bindings/leds/common.h>
10 #include <dt-bindings/gpio/meson-g12a-gpio.h>
11 #include <dt-bindings/sound/meson-g12a-tohdmitx.h>
21 stdout-path = "serial0:115200n8";
29 adc-keys {
30 compatible = "adc-keys";
31 io-channels = <&saradc 2>;
32 io-channel-names = "buttons";
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H A Dmeson-sm1-sei610.dts1 // SPDX-License-Identifier: (GPL-2.0+ OR MIT)
6 /dts-v1/;
8 #include "meson-sm1.dtsi"
9 #include <dt-bindings/gpio/gpio.h>
10 #include <dt-bindings/input/input.h>
11 #include <dt-bindings/gpio/meson-g12a-gpio.h>
12 #include <dt-bindings/sound/meson-g12a-tohdmitx.h>
23 mono_dac: audio-codec-0 {
25 #sound-dai-cells = <0>;
26 sound-name-prefix = "U16";
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/openbmc/linux/include/soc/at91/
H A Datmel_tcb.h17 * Many 32-bit Atmel SOCs include one or more TC blocks, each of which holds
18 * three general-purpose 16-bit timers. These timers share one register bank.
23 * clocks or clock gates, and per-timer TIOA and TIOB signals used for PWM
37 * struct atmel_tcb_config - SoC data for a Timer/Counter Block
50 * struct atmel_tc - information about a Timer/Counter Block
55 * @irq: irq for each of the three channels
56 * @clk: internal clock source for each of the three channels
61 * while on others, all TC channels share the same clock and IRQ.
80 /* platform-specific ATMEL_TC_TIMER_CLOCKx divisors (0 means 32KiHz) */
85 * Two registers have block-wide controls. These are: configuring the three
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/openbmc/linux/arch/arm/boot/dts/ti/omap/
H A Domap2.dtsi1 // SPDX-License-Identifier: GPL-2.0-only
5 * Copyright (C) 2011 Texas Instruments Incorporated - https://www.ti.com/
8 #include <dt-bindings/bus/ti-sysc.h>
9 #include <dt-bindings/gpio/gpio.h>
10 #include <dt-bindings/interrupt-controller/irq.h>
11 #include <dt-bindings/pinctrl/omap.h>
15 interrupt-parent = <&intc>;
16 #address-cells = <1>;
17 #size-cells = <1>;
29 #address-cells = <0>;
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H A Ddm816x.dtsi1 // SPDX-License-Identifier: GPL-2.0-only
3 #include <dt-bindings/bus/ti-sysc.h>
4 #include <dt-bindings/clock/dm816.h>
5 #include <dt-bindings/gpio/gpio.h>
6 #include <dt-bindings/pinctrl/omap.h>
10 interrupt-parent = <&intc>;
11 #address-cells = <1>;
12 #size-cells = <1>;
26 #address-cells = <1>;
27 #size-cells = <0>;
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/openbmc/u-boot/arch/arm/dts/
H A Dstm32mp157c.dtsi1 // SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
3 * Copyright (C) STMicroelectronics 2017 - All Rights Reserved
6 #include <dt-bindings/interrupt-controller/arm-gic.h>
7 #include <dt-bindings/clock/stm32mp1-clks.h>
8 #include <dt-bindings/reset/stm32mp1-resets.h>
11 #address-cells = <1>;
12 #size-cells = <1>;
15 #address-cells = <1>;
16 #size-cells = <0>;
19 compatible = "arm,cortex-a7";
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/openbmc/linux/drivers/input/keyboard/
H A Dlm8323.c1 // SPDX-License-Identifier: GPL-2.0-only
5 * Copyright (C) 2007-2009 Nokia Corporation
45 #define LM8323_CMD_PWM_WRITE 0x95 /* Write PWM script. */
46 #define LM8323_CMD_START_PWM 0x96 /* Start PWM engine. */
47 #define LM8323_CMD_STOP_PWM 0x97 /* Stop PWM engine. */
87 /* Commands for PWM engine; feed in with PWM_WRITE. */
88 /* Load ramp counter from duty cycle field (range 0 - 0xff). */
111 * Wait for trigger. Argument is a mask of channels, shifted by the channel
112 * number, e.g. 0xa for channels 3 and 1. Note that channels are numbered
126 /* pwm lock */
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/openbmc/linux/arch/arm/boot/dts/nxp/ls/
H A Dls1021a.dtsi1 // SPDX-License-Identifier: (GPL-2.0+ OR MIT)
3 * Copyright 2013-2014 Freescale Semiconductor, Inc.
6 #include <dt-bindings/interrupt-controller/arm-gic.h>
7 #include <dt-bindings/thermal/thermal.h>
10 #address-cells = <2>;
11 #size-cells = <2>;
12 interrupt-parent = <&gic>;
30 #address-cells = <1>;
31 #size-cells = <0>;
34 compatible = "arm,cortex-a7";
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/openbmc/linux/arch/arm/boot/dts/renesas/
H A Dr8a7742.dtsi1 // SPDX-License-Identifier: GPL-2.0
8 #include <dt-bindings/clock/r8a7742-cpg-mssr.h>
9 #include <dt-bindings/interrupt-controller/arm-gic.h>
10 #include <dt-bindings/interrupt-controller/irq.h>
11 #include <dt-bindings/power/r8a7742-sysc.h>
15 #address-cells = <2>;
16 #size-cells = <2>;
24 compatible = "fixed-clock";
25 #clock-cells = <0>;
26 clock-frequency = <0>;
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H A Dr8a7790.dtsi1 // SPDX-License-Identifier: GPL-2.0
3 * Device Tree Source for the R-Car H2 (R8A77900) SoC
6 * Copyright (C) 2013-2014 Renesas Solutions Corp.
10 #include <dt-bindings/clock/r8a7790-cpg-mssr.h>
11 #include <dt-bindings/interrupt-controller/arm-gic.h>
12 #include <dt-bindings/interrupt-controller/irq.h>
13 #include <dt-bindings/power/r8a7790-sysc.h>
17 #address-cells = <2>;
18 #size-cells = <2>;
46 compatible = "fixed-clock";
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/openbmc/linux/drivers/leds/
H A Dleds-lp5521.c1 // SPDX-License-Identifier: GPL-2.0-only
18 #include <linux/platform_data/leds-lp55xx.h>
22 #include "leds-lp55xx-common.h"
51 #define LP5521_LOGARITHMIC_PWM 0x80 /* Logarithmic PWM adjustment */
59 #define LP5521_PWM_HF 0x40 /* PWM: 0 = 256Hz, 1 = 558Hz */
113 led->led_current = led_current; in lp5521_set_led_current()
114 lp55xx_write(led->chip, LP5521_REG_LED_CURRENT_BASE + led->chan_nr, in lp5521_set_led_current()
120 enum lp55xx_engine_index idx = chip->engine_idx; in lp5521_load_engine()
121 static const u8 mask[] = { in lp5521_load_engine() local
133 lp55xx_update_bits(chip, LP5521_REG_OP_MODE, mask[idx], val[idx]); in lp5521_load_engine()
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