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Merge branches 'ib-mfd-iio-input-4.20', 'ib-mfd-irqchip-4.20', 'ib-mfd-rtc-4.20' and 'ib-mfd-spi-tty-4.20-1' into ibs-for-mfd-merged

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This commit is contained in:
Lee Jones 2018-10-23 08:58:01 +01:00
commit 92af5c130c
13 changed files with 618 additions and 21 deletions
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9
drivers/mfd/Kconfig
View file

@ -99,6 +99,15 @@ config MFD_AAT2870_CORE
additional drivers must be enabled in order to use the
functionality of the device.
config MFD_AT91_USART
tristate "AT91 USART Driver"
select MFD_CORE
help
Select this to get support for AT91 USART IP. This is a wrapper
over at91-usart-serial driver and usart-spi-driver. Only one function
can be used at a time. The choice is done at boot time by the probe
function of this MFD driver according to a device tree property.
config MFD_ATMEL_FLEXCOM
tristate "Atmel Flexcom (Flexible Serial Communication Unit)"
select MFD_CORE

1
drivers/mfd/Makefile
View file

@ -196,6 +196,7 @@ obj-$(CONFIG_MFD_SPMI_PMIC) += qcom-spmi-pmic.o
obj-$(CONFIG_TPS65911_COMPARATOR) += tps65911-comparator.o
obj-$(CONFIG_MFD_TPS65090) += tps65090.o
obj-$(CONFIG_MFD_AAT2870_CORE) += aat2870-core.o
obj-$(CONFIG_MFD_AT91_USART) += at91-usart.o
obj-$(CONFIG_MFD_ATMEL_FLEXCOM) += atmel-flexcom.o
obj-$(CONFIG_MFD_ATMEL_HLCDC) += atmel-hlcdc.o
obj-$(CONFIG_MFD_ATMEL_SMC) += atmel-smc.o

72
drivers/mfd/at91-usart.c Normal file
View file

@ -0,0 +1,72 @@
// SPDX-License-Identifier: GPL-2.0
/*
* Driver for AT91 USART
*
* Copyright (C) 2018 Microchip Technology
*
* Author: Radu Pirea <radu.pirea@microchip.com>
*
*/
#include <dt-bindings/mfd/at91-usart.h>
#include <linux/module.h>
#include <linux/mfd/core.h>
#include <linux/of.h>
#include <linux/property.h>
static struct mfd_cell at91_usart_spi_subdev = {
.name = "at91_usart_spi",
.of_compatible = "microchip,at91sam9g45-usart-spi",
};
static struct mfd_cell at91_usart_serial_subdev = {
.name = "atmel_usart_serial",
.of_compatible = "atmel,at91rm9200-usart-serial",
};
static int at91_usart_mode_probe(struct platform_device *pdev)
{
struct mfd_cell cell;
u32 opmode = AT91_USART_MODE_SERIAL;
device_property_read_u32(&pdev->dev, "atmel,usart-mode", &opmode);
switch (opmode) {
case AT91_USART_MODE_SPI:
cell = at91_usart_spi_subdev;
break;
case AT91_USART_MODE_SERIAL:
cell = at91_usart_serial_subdev;
break;
default:
dev_err(&pdev->dev, "atmel,usart-mode has an invalid value %u\n",
opmode);
return -EINVAL;
}
return devm_mfd_add_devices(&pdev->dev, PLATFORM_DEVID_AUTO, &cell, 1,
NULL, 0, NULL);
}
static const struct of_device_id at91_usart_mode_of_match[] = {
{ .compatible = "atmel,at91rm9200-usart" },
{ .compatible = "atmel,at91sam9260-usart" },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, at91_usart_mode_of_match);
static struct platform_driver at91_usart_mfd = {
.probe = at91_usart_mode_probe,
.driver = {
.name = "at91_usart_mode",
.of_match_table = at91_usart_mode_of_match,
},
};
module_platform_driver(at91_usart_mfd);
MODULE_AUTHOR("Radu Pirea <[email protected]>");
MODULE_DESCRIPTION("AT91 USART MFD driver");
MODULE_LICENSE("GPL v2");

13
drivers/mfd/menelaus.c
View file

@ -1094,6 +1094,7 @@ static void menelaus_rtc_alarm_work(struct menelaus_chip *m)
static inline void menelaus_rtc_init(struct menelaus_chip *m)
{
int alarm = (m->client->irq > 0);
int err;
/* assume 32KDETEN pin is pulled high */
if (!(menelaus_read_reg(MENELAUS_OSC_CTRL) & 0x80)) {
@ -1101,6 +1102,12 @@ static inline void menelaus_rtc_init(struct menelaus_chip *m)
return;
}
m->rtc = devm_rtc_allocate_device(&m->client->dev);
if (IS_ERR(m->rtc))
return;
m->rtc->ops = &menelaus_rtc_ops;
/* support RTC alarm; it can issue wakeups */
if (alarm) {
if (menelaus_add_irq_work(MENELAUS_RTCALM_IRQ,
@ -1125,10 +1132,8 @@ static inline void menelaus_rtc_init(struct menelaus_chip *m)
menelaus_write_reg(MENELAUS_RTC_CTRL, m->rtc_control);
}
m->rtc = rtc_device_register(DRIVER_NAME,
&m->client->dev,
&menelaus_rtc_ops, THIS_MODULE);
if (IS_ERR(m->rtc)) {
err = rtc_register_device(m->rtc);
if (err) {
if (alarm) {
menelaus_remove_irq_work(MENELAUS_RTCALM_IRQ);
device_init_wakeup(&m->client->dev, 0);