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authorJulien Panis <jpanis@baylibre.com>2023-05-11 12:51:24 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2023-06-15 14:41:53 +0300
commita0df3ef087f8aaebbdf205b1b2e126ec9ef6b113 (patch)
treedd7fdc8a45a8003abd26b7327d5451856dc4dd23 /include/uapi/linux/tps6594_pfsm.h
parent875fdd0787e41e4dfc4161461514ec3b1230458f (diff)
downloadlinux-a0df3ef087f8aaebbdf205b1b2e126ec9ef6b113.tar.xz
misc: tps6594-pfsm: Add driver for TI TPS6594 PFSM
This PFSM controls the operational modes of the PMIC: - STANDBY and LP_STANDBY, - ACTIVE state, - MCU_ONLY state, - RETENTION state, with or without DDR and/or GPIO retention. Depending on the current operational mode, some voltage domains remain energized while others can be off. This PFSM is also used to trigger a firmware update, and provides R/W access to device registers. See Documentation/misc-devices/tps6594-pfsm.rst for more information. Signed-off-by: Julien Panis <jpanis@baylibre.com> Message-ID: <20230511095126.105104-5-jpanis@baylibre.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include/uapi/linux/tps6594_pfsm.h')
-rw-r--r--include/uapi/linux/tps6594_pfsm.h37
1 files changed, 37 insertions, 0 deletions
diff --git a/include/uapi/linux/tps6594_pfsm.h b/include/uapi/linux/tps6594_pfsm.h
new file mode 100644
index 000000000000..c69569e0a7a2
--- /dev/null
+++ b/include/uapi/linux/tps6594_pfsm.h
@@ -0,0 +1,37 @@
+/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
+/*
+ * Userspace ABI for TPS6594 PMIC Pre-configurable Finite State Machine
+ *
+ * Copyright (C) 2023 BayLibre Incorporated - https://www.baylibre.com/
+ */
+
+#ifndef __TPS6594_PFSM_H
+#define __TPS6594_PFSM_H
+
+#include <linux/const.h>
+#include <linux/ioctl.h>
+#include <linux/types.h>
+
+/**
+ * struct pmic_state_opt - PMIC state options
+ * @gpio_retention: if enabled, power rails associated with GPIO retention remain active
+ * @ddr_retention: if enabled, power rails associated with DDR retention remain active
+ * @mcu_only_startup_dest: if enabled, startup destination state is MCU_ONLY
+ */
+struct pmic_state_opt {
+ __u8 gpio_retention;
+ __u8 ddr_retention;
+ __u8 mcu_only_startup_dest;
+};
+
+/* Commands */
+#define PMIC_BASE 'P'
+
+#define PMIC_GOTO_STANDBY _IO(PMIC_BASE, 0)
+#define PMIC_GOTO_LP_STANDBY _IO(PMIC_BASE, 1)
+#define PMIC_UPDATE_PGM _IO(PMIC_BASE, 2)
+#define PMIC_SET_ACTIVE_STATE _IO(PMIC_BASE, 3)
+#define PMIC_SET_MCU_ONLY_STATE _IOW(PMIC_BASE, 4, struct pmic_state_opt)
+#define PMIC_SET_RETENTION_STATE _IOW(PMIC_BASE, 5, struct pmic_state_opt)
+
+#endif /* __TPS6594_PFSM_H */