WCD9335 supports two lines of irqs INTR1 and INTR2. Multiple interrupts are muxed via these lines. INTR1 consists of all possible interrupt sources like: Ear OCP, HPH OCP, MBHC, MAD, VBAT, and SVA INTR2 is a subset of first interrupt sources like MAD, VBAT, and SVA
Signed-off-by: Srinivas Kandagatla srinivas.kandagatla@linaro.org --- drivers/mfd/Makefile | 2 +- drivers/mfd/wcd9335-core.c | 9 ++ drivers/mfd/wcd9335-irq.c | 172 ++++++++++++++++++++++++++++++++++++ include/dt-bindings/mfd/wcd9335.h | 43 +++++++++ include/linux/mfd/wcd9335/wcd9335.h | 3 + 5 files changed, 228 insertions(+), 1 deletion(-) create mode 100644 drivers/mfd/wcd9335-irq.c create mode 100644 include/dt-bindings/mfd/wcd9335.h
diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile index a4697370640b..210875afe78a 100644 --- a/drivers/mfd/Makefile +++ b/drivers/mfd/Makefile @@ -58,7 +58,7 @@ obj-$(CONFIG_MFD_ARIZONA) += cs47l24-tables.o endif
obj-$(CONFIG_MFD_WCD9335) += wcd9335.o -wcd9335-objs := wcd9335-core.o +wcd9335-objs := wcd9335-core.o wcd9335-irq.o
obj-$(CONFIG_MFD_WM8400) += wm8400-core.o wm831x-objs := wm831x-core.o wm831x-irq.o wm831x-otp.o diff --git a/drivers/mfd/wcd9335-core.c b/drivers/mfd/wcd9335-core.c index 8f746901f4e9..6299dfb63aca 100644 --- a/drivers/mfd/wcd9335-core.c +++ b/drivers/mfd/wcd9335-core.c @@ -243,12 +243,20 @@ static int wcd9335_slim_status(struct slim_device *sdev, return ret; }
+ wcd9335_irq_init(wcd); wcd->slim_ifd = wcd->slim_ifd;
return mfd_add_devices(wcd->dev, 0, wcd9335_devices, ARRAY_SIZE(wcd9335_devices), NULL, 0, NULL); }
+static void wcd9335_slim_remove(struct slim_device *sdev) +{ + struct wcd9335 *wcd = dev_get_drvdata(&sdev->dev); + + wcd9335_irq_exit(wcd); +} + static const struct slim_device_id wcd9335_slim_id[] = { {0x217, 0x1a0, 0x1, 0x0}, {} @@ -259,6 +267,7 @@ static struct slim_driver wcd9335_slim_driver = { .name = "wcd9335-slim", }, .probe = wcd9335_slim_probe, + .remove = wcd9335_slim_remove, .device_status = wcd9335_slim_status, .id_table = wcd9335_slim_id, }; diff --git a/drivers/mfd/wcd9335-irq.c b/drivers/mfd/wcd9335-irq.c new file mode 100644 index 000000000000..84098c89419b --- /dev/null +++ b/drivers/mfd/wcd9335-irq.c @@ -0,0 +1,172 @@ +// SPDX-License-Identifier: GPL-2.0 +// Copyright (c) 2018, Linaro Limited +// +#include <linux/gpio.h> +#include <linux/interrupt.h> +#include <linux/regmap.h> +#include <linux/of_irq.h> +#include <dt-bindings/mfd/wcd9335.h> +#include <linux/mfd/wcd9335/wcd9335.h> +#include <linux/mfd/wcd9335/registers.h> + +static const struct regmap_irq wcd9335_irqs[] = { + /* INTR_REG 0 */ + [WCD9335_IRQ_SLIMBUS] = { + .reg_offset = 0, + .mask = BIT(0), + }, + [WCD9335_IRQ_FLL_LOCK_LOSS] = { + .reg_offset = 0, + .mask = BIT(1), + }, + [WCD9335_IRQ_HPH_PA_OCPL_FAULT] = { + .reg_offset = 0, + .mask = BIT(2), + }, + [WCD9335_IRQ_HPH_PA_OCPR_FAULT] = { + .reg_offset = 0, + .mask = BIT(3), + }, + [WCD9335_IRQ_EAR_PA_OCP_FAULT] = { + .reg_offset = 0, + .mask = BIT(4), + }, + [WCD9335_IRQ_HPH_PA_CNPL_COMPLETE] = { + .reg_offset = 0, + .mask = BIT(5), + }, + [WCD9335_IRQ_HPH_PA_CNPR_COMPLETE] = { + .reg_offset = 0, + .mask = BIT(6), + }, + [WCD9335_IRQ_EAR_PA_CNP_COMPLETE] = { + .reg_offset = 0, + .mask = BIT(7), + }, + /* INTR_REG 1 */ + [WCD9335_IRQ_MBHC_SW_DET] = { + .reg_offset = 1, + .mask = BIT(0), + }, + [WCD9335_IRQ_MBHC_ELECT_INS_REM_DET] = { + .reg_offset = 1, + .mask = BIT(1), + }, + [WCD9335_IRQ_MBHC_BUTTON_PRESS_DET] = { + .reg_offset = 1, + .mask = BIT(2), + }, + [WCD9335_IRQ_MBHC_BUTTON_RELEASE_DET] = { + .reg_offset = 1, + .mask = BIT(3), + }, + [WCD9335_IRQ_MBHC_ELECT_INS_REM_LEG_DET] = { + .reg_offset = 1, + .mask = BIT(4), + }, + /* INTR_REG 2 */ + [WCD9335_IRQ_LINE_PA1_CNP_COMPLETE] = { + .reg_offset = 2, + .mask = BIT(0), + }, + [WCD9335_IRQ_LINE_PA2_CNP_COMPLETE] = { + .reg_offset = 2, + .mask = BIT(1), + }, + [WCD9335_IRQ_LINE_PA3_CNP_COMPLETE] = { + .reg_offset = 2, + .mask = BIT(2), + }, + [WCD9335_IRQ_LINE_PA4_CNP_COMPLETE] = { + .reg_offset = 2, + .mask = BIT(3), + }, + [WCD9335_IRQ_SOUNDWIRE] = { + .reg_offset = 2, + .mask = BIT(4), + }, + [WCD9335_IRQ_VDD_DIG_RAMP_COMPLETE] = { + .reg_offset = 2, + .mask = BIT(5), + }, + [WCD9335_IRQ_RCO_ERROR] = { + .reg_offset = 2, + .mask = BIT(6), + }, + [WCD9335_IRQ_SVA_ERROR] = { + .reg_offset = 2, + .mask = BIT(7), + }, + /* INTR_REG 3 */ + [WCD9335_IRQ_MAD_AUDIO] = { + .reg_offset = 3, + .mask = BIT(0), + }, + [WCD9335_IRQ_MAD_BEACON] = { + .reg_offset = 3, + .mask = BIT(1), + }, + [WCD9335_IRQ_MAD_ULTRASOUND] = { + .reg_offset = 3, + .mask = BIT(2), + }, + [WCD9335_IRQ_VBAT_ATTACK] = { + .reg_offset = 3, + .mask = BIT(3), + }, + [WCD9335_IRQ_VBAT_RESTORE] = { + .reg_offset = 3, + .mask = BIT(4), + }, + [WCD9335_IRQ_SVA_OUTBOX1] = { + .reg_offset = 3, + .mask = BIT(5), + }, + [WCD9335_IRQ_SVA_OUTBOX2] = { + .reg_offset = 3, + .mask = BIT(6), + }, +}; + +static const struct regmap_irq_chip wcd9335_regmap_irq1_chip = { + .name = "wcd9335_pin1_irq", + .status_base = WCD9335_INTR_PIN1_STATUS0, + .mask_base = WCD9335_INTR_PIN1_MASK0, + .ack_base = WCD9335_INTR_PIN1_CLEAR0, + .type_base = WCD9335_INTR_LEVEL0, + .num_regs = 4, + .irqs = wcd9335_irqs, + .num_irqs = ARRAY_SIZE(wcd9335_irqs), +}; + +int wcd9335_irq_init(struct wcd9335 *wcd) +{ + int ret; + /* + * INTR1 consists of all possible interrupt sources Ear OCP, + * HPH OCP, MBHC, MAD, VBAT, and SVA + * INTR2 is a subset of first interrupt sources MAD, VBAT, and SVA + */ + wcd->intr1 = of_irq_get_byname(wcd->dev->of_node, "intr1"); + if (wcd->intr1 < 0 || wcd->intr1 == -EPROBE_DEFER) { + dev_err(wcd->dev, "Unable to configure irq\n"); + return wcd->intr1; + } + + ret = regmap_add_irq_chip(wcd->regmap, wcd->intr1, + IRQF_TRIGGER_HIGH | IRQF_ONESHOT, + 0, &wcd9335_regmap_irq1_chip, + &wcd->irq_data); + if (ret != 0) { + dev_err(wcd->dev, "Failed to register IRQ chip: %d\n", ret); + return ret; + } + + return 0; +} + +int wcd9335_irq_exit(struct wcd9335 *wcd) +{ + regmap_del_irq_chip(wcd->intr1, wcd->irq_data); + return 0; +} diff --git a/include/dt-bindings/mfd/wcd9335.h b/include/dt-bindings/mfd/wcd9335.h new file mode 100644 index 000000000000..61b6a11da00d --- /dev/null +++ b/include/dt-bindings/mfd/wcd9335.h @@ -0,0 +1,43 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * This header provides macros for WCD9335 device bindings. + * + * Copyright (c) 2018, Linaro Limited + */ + +#ifndef _DT_BINDINGS_MFD_WCD9335_H +#define _DT_BINDINGS_MFD_WCD9335_H + +#define WCD9335_IRQ_SLIMBUS 0 +#define WCD9335_IRQ_FLL_LOCK_LOSS 1 +#define WCD9335_IRQ_HPH_PA_OCPL_FAULT 2 +#define WCD9335_IRQ_HPH_PA_OCPR_FAULT 3 +#define WCD9335_IRQ_EAR_PA_OCP_FAULT 4 +#define WCD9335_IRQ_HPH_PA_CNPL_COMPLETE 5 +#define WCD9335_IRQ_HPH_PA_CNPR_COMPLETE 6 +#define WCD9335_IRQ_EAR_PA_CNP_COMPLETE 7 +#define WCD9335_IRQ_MBHC_SW_DET 8 +#define WCD9335_IRQ_MBHC_ELECT_INS_REM_DET 9 +#define WCD9335_IRQ_MBHC_BUTTON_PRESS_DET 10 +#define WCD9335_IRQ_MBHC_BUTTON_RELEASE_DET 11 +#define WCD9335_IRQ_MBHC_ELECT_INS_REM_LEG_DET 12 +#define WCD9335_IRQ_RESERVED_0 13 +#define WCD9335_IRQ_RESERVED_1 14 +#define WCD9335_IRQ_RESERVED_2 15 +#define WCD9335_IRQ_LINE_PA1_CNP_COMPLETE 16 +#define WCD9335_IRQ_LINE_PA2_CNP_COMPLETE 17 +#define WCD9335_IRQ_LINE_PA3_CNP_COMPLETE 18 +#define WCD9335_IRQ_LINE_PA4_CNP_COMPLETE 19 +#define WCD9335_IRQ_SOUNDWIRE 20 +#define WCD9335_IRQ_VDD_DIG_RAMP_COMPLETE 21 +#define WCD9335_IRQ_RCO_ERROR 22 +#define WCD9335_IRQ_SVA_ERROR 23 +#define WCD9335_IRQ_MAD_AUDIO 24 +#define WCD9335_IRQ_MAD_BEACON 25 +#define WCD9335_IRQ_MAD_ULTRASOUND 26 +#define WCD9335_IRQ_VBAT_ATTACK 27 +#define WCD9335_IRQ_VBAT_RESTORE 28 +#define WCD9335_IRQ_SVA_OUTBOX1 29 +#define WCD9335_IRQ_SVA_OUTBOX2 30 + +#endif /* _DT_BINDINGS_MFD_WCD9335_H */ diff --git a/include/linux/mfd/wcd9335/wcd9335.h b/include/linux/mfd/wcd9335/wcd9335.h index b9d2f7af243a..1479bfe75f23 100644 --- a/include/linux/mfd/wcd9335/wcd9335.h +++ b/include/linux/mfd/wcd9335/wcd9335.h @@ -39,4 +39,7 @@ struct wcd9335 { struct regulator_bulk_data supplies[WCD9335_MAX_SUPPLY]; };
+extern int wcd9335_irq_init(struct wcd9335 *wcd); +extern int wcd9335_irq_exit(struct wcd9335 *wcd); + #endif /* __WCD9335_H__ */