diff options
author | Tom Rini <trini@konsulko.com> | 2021-01-19 07:56:59 -0500 |
---|---|---|
committer | Tom Rini <trini@konsulko.com> | 2021-01-19 07:56:59 -0500 |
commit | db0dd72e27ce62c5b28f07595b91ed00d0565819 (patch) | |
tree | 912603265aac7ae1fb843c02986dbbb0835b7060 /cmd/pwm.c | |
parent | ae3d8b6c403218e68b56bce962ba7737161cc6f4 (diff) | |
parent | ac7a51c0e48f2aa81ae20caf8d6b9fad976675cd (diff) |
Merge branch '2021-01-18-assorted-platform-updates'
- Assorted MediaTek, AST2x00 updates
- Assorted driver fixes for various platforms
- Keymile platform updates
- Add pwm command, mp5416 pmic driver
Diffstat (limited to 'cmd/pwm.c')
-rw-r--r-- | cmd/pwm.c | 117 |
1 files changed, 117 insertions, 0 deletions
diff --git a/cmd/pwm.c b/cmd/pwm.c new file mode 100644 index 0000000000..5849fc57b6 --- /dev/null +++ b/cmd/pwm.c @@ -0,0 +1,117 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Control PWM channels + * + * Copyright (c) 2020 SiFive, Inc + * author: Pragnesh Patel <pragnesh.patel@sifive.com> + */ + +#include <command.h> +#include <dm.h> +#include <pwm.h> + +enum pwm_cmd { + PWM_SET_INVERT, + PWM_SET_CONFIG, + PWM_SET_ENABLE, + PWM_SET_DISABLE, +}; + +static int do_pwm(struct cmd_tbl *cmdtp, int flag, int argc, + char *const argv[]) +{ + const char *str_cmd, *str_channel = NULL, *str_enable = NULL; + const char *str_pwm = NULL, *str_period = NULL, *str_duty = NULL; + enum pwm_cmd sub_cmd; + struct udevice *dev; + u32 channel, pwm_enable, pwm_dev, period_ns = 0, duty_ns = 0; + int ret; + + if (argc < 4) + return CMD_RET_USAGE; + + str_cmd = argv[1]; + argc -= 2; + argv += 2; + + if (argc > 0) { + str_pwm = *argv; + argc--; + argv++; + } + + if (!str_pwm) + return CMD_RET_USAGE; + + switch (*str_cmd) { + case 'i': + sub_cmd = PWM_SET_INVERT; + break; + case 'c': + sub_cmd = PWM_SET_CONFIG; + break; + case 'e': + sub_cmd = PWM_SET_ENABLE; + break; + case 'd': + sub_cmd = PWM_SET_DISABLE; + break; + default: + return CMD_RET_USAGE; + } + + pwm_dev = simple_strtoul(str_pwm, NULL, 10); + ret = uclass_get_device(UCLASS_PWM, pwm_dev, &dev); + if (ret) { + printf("pwm: '%s' not found\n", str_pwm); + return cmd_process_error(cmdtp, ret); + } + + if (argc > 0) { + str_channel = *argv; + channel = simple_strtoul(str_channel, NULL, 10); + argc--; + argv++; + } else { + return CMD_RET_USAGE; + } + + if (sub_cmd == PWM_SET_INVERT && argc > 0) { + str_enable = *argv; + pwm_enable = simple_strtoul(str_enable, NULL, 10); + ret = pwm_set_invert(dev, channel, pwm_enable); + } else if (sub_cmd == PWM_SET_CONFIG && argc == 2) { + str_period = *argv; + argc--; + argv++; + period_ns = simple_strtoul(str_period, NULL, 10); + + if (argc > 0) { + str_duty = *argv; + duty_ns = simple_strtoul(str_duty, NULL, 10); + } + + ret = pwm_set_config(dev, channel, period_ns, duty_ns); + } else if (sub_cmd == PWM_SET_ENABLE) { + ret = pwm_set_enable(dev, channel, 1); + } else if (sub_cmd == PWM_SET_DISABLE) { + ret = pwm_set_enable(dev, channel, 0); + } else { + printf("PWM arguments missing\n"); + return CMD_RET_FAILURE; + } + + if (ret) { + printf("error(%d)\n", ret); + return CMD_RET_FAILURE; + } + + return CMD_RET_SUCCESS; +} + +U_BOOT_CMD(pwm, 6, 0, do_pwm, + "control pwm channels", + "pwm <invert> <pwm_dev_num> <channel> <polarity>\n" + "pwm <config> <pwm_dev_num> <channel> <period_ns> <duty_ns>\n" + "pwm <enable/disable> <pwm_dev_num> <channel>\n" + "Note: All input values are in decimal"); |