From: Linus Walleij <linus.walleij@linaro.org>
To: linux-kernel@vger.kernel.org,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Arnd Bergmann <arnd@arndb.de>
Cc: "Linus Walleij" <linus.walleij@linaro.org>,
"Paweł Chmiel" <pawel.mikolaj.chmiel@gmail.com>,
"Chanwoo Choi" <cw00.choi@samsung.com>
Subject: [PATCH] misc: fsa9480: Delete this driver
Date: Sun, 30 Jun 2019 16:03:02 +0200 [thread overview]
Message-ID: <20190630140302.16245-1-linus.walleij@linaro.org> (raw)
The FSA9480 has a new driver more appropriately located
in the drivers/extcon subsystem. It is also more complete
and includes device tree support. Delete the old misc
driver.
Cc: Paweł Chmiel <pawel.mikolaj.chmiel@gmail.com>
Cc: Chanwoo Choi <cw00.choi@samsung.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
---
drivers/misc/Kconfig | 9 -
drivers/misc/Makefile | 1 -
drivers/misc/fsa9480.c | 547 --------------------------
include/linux/platform_data/fsa9480.h | 24 --
4 files changed, 581 deletions(-)
delete mode 100644 drivers/misc/fsa9480.c
delete mode 100644 include/linux/platform_data/fsa9480.h
diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig
index 85fc77148d19..88e59bb1b06f 100644
--- a/drivers/misc/Kconfig
+++ b/drivers/misc/Kconfig
@@ -431,15 +431,6 @@ config PCH_PHUB
To compile this driver as a module, choose M here: the module will
be called pch_phub.
-config USB_SWITCH_FSA9480
- tristate "FSA9480 USB Switch"
- depends on I2C
- help
- The FSA9480 is a USB port accessory detector and switch.
- The FSA9480 is fully controlled using I2C and enables USB data,
- stereo and mono audio, video, microphone and UART data to use
- a common connector port.
-
config LATTICE_ECP3_CONFIG
tristate "Lattice ECP3 FPGA bitstream configuration via SPI"
depends on SPI && SYSFS
diff --git a/drivers/misc/Makefile b/drivers/misc/Makefile
index b9affcdaa3d6..95440c335dd4 100644
--- a/drivers/misc/Makefile
+++ b/drivers/misc/Makefile
@@ -42,7 +42,6 @@ obj-$(CONFIG_VMWARE_BALLOON) += vmw_balloon.o
obj-$(CONFIG_PCH_PHUB) += pch_phub.o
obj-y += ti-st/
obj-y += lis3lv02d/
-obj-$(CONFIG_USB_SWITCH_FSA9480) += fsa9480.o
obj-$(CONFIG_ALTERA_STAPL) +=altera-stapl/
obj-$(CONFIG_INTEL_MEI) += mei/
obj-$(CONFIG_VMWARE_VMCI) += vmw_vmci/
diff --git a/drivers/misc/fsa9480.c b/drivers/misc/fsa9480.c
deleted file mode 100644
index fab02f2da077..000000000000
--- a/drivers/misc/fsa9480.c
+++ /dev/null
@@ -1,547 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * fsa9480.c - FSA9480 micro USB switch device driver
- *
- * Copyright (C) 2010 Samsung Electronics
- * Minkyu Kang <mk7.kang@samsung.com>
- * Wonguk Jeong <wonguk.jeong@samsung.com>
- */
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/err.h>
-#include <linux/i2c.h>
-#include <linux/platform_data/fsa9480.h>
-#include <linux/irq.h>
-#include <linux/interrupt.h>
-#include <linux/workqueue.h>
-#include <linux/platform_device.h>
-#include <linux/slab.h>
-#include <linux/pm_runtime.h>
-
-/* FSA9480 I2C registers */
-#define FSA9480_REG_DEVID 0x01
-#define FSA9480_REG_CTRL 0x02
-#define FSA9480_REG_INT1 0x03
-#define FSA9480_REG_INT2 0x04
-#define FSA9480_REG_INT1_MASK 0x05
-#define FSA9480_REG_INT2_MASK 0x06
-#define FSA9480_REG_ADC 0x07
-#define FSA9480_REG_TIMING1 0x08
-#define FSA9480_REG_TIMING2 0x09
-#define FSA9480_REG_DEV_T1 0x0a
-#define FSA9480_REG_DEV_T2 0x0b
-#define FSA9480_REG_BTN1 0x0c
-#define FSA9480_REG_BTN2 0x0d
-#define FSA9480_REG_CK 0x0e
-#define FSA9480_REG_CK_INT1 0x0f
-#define FSA9480_REG_CK_INT2 0x10
-#define FSA9480_REG_CK_INTMASK1 0x11
-#define FSA9480_REG_CK_INTMASK2 0x12
-#define FSA9480_REG_MANSW1 0x13
-#define FSA9480_REG_MANSW2 0x14
-
-/* Control */
-#define CON_SWITCH_OPEN (1 << 4)
-#define CON_RAW_DATA (1 << 3)
-#define CON_MANUAL_SW (1 << 2)
-#define CON_WAIT (1 << 1)
-#define CON_INT_MASK (1 << 0)
-#define CON_MASK (CON_SWITCH_OPEN | CON_RAW_DATA | \
- CON_MANUAL_SW | CON_WAIT)
-
-/* Device Type 1 */
-#define DEV_USB_OTG (1 << 7)
-#define DEV_DEDICATED_CHG (1 << 6)
-#define DEV_USB_CHG (1 << 5)
-#define DEV_CAR_KIT (1 << 4)
-#define DEV_UART (1 << 3)
-#define DEV_USB (1 << 2)
-#define DEV_AUDIO_2 (1 << 1)
-#define DEV_AUDIO_1 (1 << 0)
-
-#define DEV_T1_USB_MASK (DEV_USB_OTG | DEV_USB)
-#define DEV_T1_UART_MASK (DEV_UART)
-#define DEV_T1_CHARGER_MASK (DEV_DEDICATED_CHG | DEV_USB_CHG)
-
-/* Device Type 2 */
-#define DEV_AV (1 << 6)
-#define DEV_TTY (1 << 5)
-#define DEV_PPD (1 << 4)
-#define DEV_JIG_UART_OFF (1 << 3)
-#define DEV_JIG_UART_ON (1 << 2)
-#define DEV_JIG_USB_OFF (1 << 1)
-#define DEV_JIG_USB_ON (1 << 0)
-
-#define DEV_T2_USB_MASK (DEV_JIG_USB_OFF | DEV_JIG_USB_ON)
-#define DEV_T2_UART_MASK (DEV_JIG_UART_OFF | DEV_JIG_UART_ON)
-#define DEV_T2_JIG_MASK (DEV_JIG_USB_OFF | DEV_JIG_USB_ON | \
- DEV_JIG_UART_OFF | DEV_JIG_UART_ON)
-
-/*
- * Manual Switch
- * D- [7:5] / D+ [4:2]
- * 000: Open all / 001: USB / 010: AUDIO / 011: UART / 100: V_AUDIO
- */
-#define SW_VAUDIO ((4 << 5) | (4 << 2))
-#define SW_UART ((3 << 5) | (3 << 2))
-#define SW_AUDIO ((2 << 5) | (2 << 2))
-#define SW_DHOST ((1 << 5) | (1 << 2))
-#define SW_AUTO ((0 << 5) | (0 << 2))
-
-/* Interrupt 1 */
-#define INT_DETACH (1 << 1)
-#define INT_ATTACH (1 << 0)
-
-struct fsa9480_usbsw {
- struct i2c_client *client;
- struct fsa9480_platform_data *pdata;
- int dev1;
- int dev2;
- int mansw;
-};
-
-static struct fsa9480_usbsw *chip;
-
-static int fsa9480_write_reg(struct i2c_client *client,
- int reg, int value)
-{
- int ret;
-
- ret = i2c_smbus_write_byte_data(client, reg, value);
-
- if (ret < 0)
- dev_err(&client->dev, "%s: err %d\n", __func__, ret);
-
- return ret;
-}
-
-static int fsa9480_read_reg(struct i2c_client *client, int reg)
-{
- int ret;
-
- ret = i2c_smbus_read_byte_data(client, reg);
-
- if (ret < 0)
- dev_err(&client->dev, "%s: err %d\n", __func__, ret);
-
- return ret;
-}
-
-static int fsa9480_read_irq(struct i2c_client *client, int *value)
-{
- int ret;
-
- ret = i2c_smbus_read_i2c_block_data(client,
- FSA9480_REG_INT1, 2, (u8 *)value);
- *value &= 0xffff;
-
- if (ret < 0)
- dev_err(&client->dev, "%s: err %d\n", __func__, ret);
-
- return ret;
-}
-
-static void fsa9480_set_switch(const char *buf)
-{
- struct fsa9480_usbsw *usbsw = chip;
- struct i2c_client *client = usbsw->client;
- unsigned int value;
- unsigned int path = 0;
-
- value = fsa9480_read_reg(client, FSA9480_REG_CTRL);
-
- if (!strncmp(buf, "VAUDIO", 6)) {
- path = SW_VAUDIO;
- value &= ~CON_MANUAL_SW;
- } else if (!strncmp(buf, "UART", 4)) {
- path = SW_UART;
- value &= ~CON_MANUAL_SW;
- } else if (!strncmp(buf, "AUDIO", 5)) {
- path = SW_AUDIO;
- value &= ~CON_MANUAL_SW;
- } else if (!strncmp(buf, "DHOST", 5)) {
- path = SW_DHOST;
- value &= ~CON_MANUAL_SW;
- } else if (!strncmp(buf, "AUTO", 4)) {
- path = SW_AUTO;
- value |= CON_MANUAL_SW;
- } else {
- printk(KERN_ERR "Wrong command\n");
- return;
- }
-
- usbsw->mansw = path;
- fsa9480_write_reg(client, FSA9480_REG_MANSW1, path);
- fsa9480_write_reg(client, FSA9480_REG_CTRL, value);
-}
-
-static ssize_t fsa9480_get_switch(char *buf)
-{
- struct fsa9480_usbsw *usbsw = chip;
- struct i2c_client *client = usbsw->client;
- unsigned int value;
-
- value = fsa9480_read_reg(client, FSA9480_REG_MANSW1);
-
- if (value == SW_VAUDIO)
- return sprintf(buf, "VAUDIO\n");
- else if (value == SW_UART)
- return sprintf(buf, "UART\n");
- else if (value == SW_AUDIO)
- return sprintf(buf, "AUDIO\n");
- else if (value == SW_DHOST)
- return sprintf(buf, "DHOST\n");
- else if (value == SW_AUTO)
- return sprintf(buf, "AUTO\n");
- else
- return sprintf(buf, "%x", value);
-}
-
-static ssize_t fsa9480_show_device(struct device *dev,
- struct device_attribute *attr,
- char *buf)
-{
- struct fsa9480_usbsw *usbsw = dev_get_drvdata(dev);
- struct i2c_client *client = usbsw->client;
- int dev1, dev2;
-
- dev1 = fsa9480_read_reg(client, FSA9480_REG_DEV_T1);
- dev2 = fsa9480_read_reg(client, FSA9480_REG_DEV_T2);
-
- if (!dev1 && !dev2)
- return sprintf(buf, "NONE\n");
-
- /* USB */
- if (dev1 & DEV_T1_USB_MASK || dev2 & DEV_T2_USB_MASK)
- return sprintf(buf, "USB\n");
-
- /* UART */
- if (dev1 & DEV_T1_UART_MASK || dev2 & DEV_T2_UART_MASK)
- return sprintf(buf, "UART\n");
-
- /* CHARGER */
- if (dev1 & DEV_T1_CHARGER_MASK)
- return sprintf(buf, "CHARGER\n");
-
- /* JIG */
- if (dev2 & DEV_T2_JIG_MASK)
- return sprintf(buf, "JIG\n");
-
- return sprintf(buf, "UNKNOWN\n");
-}
-
-static ssize_t fsa9480_show_manualsw(struct device *dev,
- struct device_attribute *attr, char *buf)
-{
- return fsa9480_get_switch(buf);
-
-}
-
-static ssize_t fsa9480_set_manualsw(struct device *dev,
- struct device_attribute *attr,
- const char *buf, size_t count)
-{
- fsa9480_set_switch(buf);
-
- return count;
-}
-
-static DEVICE_ATTR(device, S_IRUGO, fsa9480_show_device, NULL);
-static DEVICE_ATTR(switch, S_IRUGO | S_IWUSR,
- fsa9480_show_manualsw, fsa9480_set_manualsw);
-
-static struct attribute *fsa9480_attributes[] = {
- &dev_attr_device.attr,
- &dev_attr_switch.attr,
- NULL
-};
-
-static const struct attribute_group fsa9480_group = {
- .attrs = fsa9480_attributes,
-};
-
-static void fsa9480_detect_dev(struct fsa9480_usbsw *usbsw, int intr)
-{
- int val1, val2, ctrl;
- struct fsa9480_platform_data *pdata = usbsw->pdata;
- struct i2c_client *client = usbsw->client;
-
- val1 = fsa9480_read_reg(client, FSA9480_REG_DEV_T1);
- val2 = fsa9480_read_reg(client, FSA9480_REG_DEV_T2);
- ctrl = fsa9480_read_reg(client, FSA9480_REG_CTRL);
-
- dev_info(&client->dev, "intr: 0x%x, dev1: 0x%x, dev2: 0x%x\n",
- intr, val1, val2);
-
- if (!intr)
- goto out;
-
- if (intr & INT_ATTACH) { /* Attached */
- /* USB */
- if (val1 & DEV_T1_USB_MASK || val2 & DEV_T2_USB_MASK) {
- if (pdata->usb_cb)
- pdata->usb_cb(FSA9480_ATTACHED);
-
- if (usbsw->mansw) {
- fsa9480_write_reg(client,
- FSA9480_REG_MANSW1, usbsw->mansw);
- }
- }
-
- /* UART */
- if (val1 & DEV_T1_UART_MASK || val2 & DEV_T2_UART_MASK) {
- if (pdata->uart_cb)
- pdata->uart_cb(FSA9480_ATTACHED);
-
- if (!(ctrl & CON_MANUAL_SW)) {
- fsa9480_write_reg(client,
- FSA9480_REG_MANSW1, SW_UART);
- }
- }
-
- /* CHARGER */
- if (val1 & DEV_T1_CHARGER_MASK) {
- if (pdata->charger_cb)
- pdata->charger_cb(FSA9480_ATTACHED);
- }
-
- /* JIG */
- if (val2 & DEV_T2_JIG_MASK) {
- if (pdata->jig_cb)
- pdata->jig_cb(FSA9480_ATTACHED);
- }
- } else if (intr & INT_DETACH) { /* Detached */
- /* USB */
- if (usbsw->dev1 & DEV_T1_USB_MASK ||
- usbsw->dev2 & DEV_T2_USB_MASK) {
- if (pdata->usb_cb)
- pdata->usb_cb(FSA9480_DETACHED);
- }
-
- /* UART */
- if (usbsw->dev1 & DEV_T1_UART_MASK ||
- usbsw->dev2 & DEV_T2_UART_MASK) {
- if (pdata->uart_cb)
- pdata->uart_cb(FSA9480_DETACHED);
- }
-
- /* CHARGER */
- if (usbsw->dev1 & DEV_T1_CHARGER_MASK) {
- if (pdata->charger_cb)
- pdata->charger_cb(FSA9480_DETACHED);
- }
-
- /* JIG */
- if (usbsw->dev2 & DEV_T2_JIG_MASK) {
- if (pdata->jig_cb)
- pdata->jig_cb(FSA9480_DETACHED);
- }
- }
-
- usbsw->dev1 = val1;
- usbsw->dev2 = val2;
-
-out:
- ctrl &= ~CON_INT_MASK;
- fsa9480_write_reg(client, FSA9480_REG_CTRL, ctrl);
-}
-
-static irqreturn_t fsa9480_irq_handler(int irq, void *data)
-{
- struct fsa9480_usbsw *usbsw = data;
- struct i2c_client *client = usbsw->client;
- int intr;
-
- /* clear interrupt */
- fsa9480_read_irq(client, &intr);
-
- /* device detection */
- fsa9480_detect_dev(usbsw, intr);
-
- return IRQ_HANDLED;
-}
-
-static int fsa9480_irq_init(struct fsa9480_usbsw *usbsw)
-{
- struct fsa9480_platform_data *pdata = usbsw->pdata;
- struct i2c_client *client = usbsw->client;
- int ret;
- int intr;
- unsigned int ctrl = CON_MASK;
-
- /* clear interrupt */
- fsa9480_read_irq(client, &intr);
-
- /* unmask interrupt (attach/detach only) */
- fsa9480_write_reg(client, FSA9480_REG_INT1_MASK, 0xfc);
- fsa9480_write_reg(client, FSA9480_REG_INT2_MASK, 0x1f);
-
- usbsw->mansw = fsa9480_read_reg(client, FSA9480_REG_MANSW1);
-
- if (usbsw->mansw)
- ctrl &= ~CON_MANUAL_SW; /* Manual Switching Mode */
-
- fsa9480_write_reg(client, FSA9480_REG_CTRL, ctrl);
-
- if (pdata && pdata->cfg_gpio)
- pdata->cfg_gpio();
-
- if (client->irq) {
- ret = request_threaded_irq(client->irq, NULL,
- fsa9480_irq_handler,
- IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
- "fsa9480 micro USB", usbsw);
- if (ret) {
- dev_err(&client->dev, "failed to request IRQ\n");
- return ret;
- }
-
- if (pdata)
- device_init_wakeup(&client->dev, pdata->wakeup);
- }
-
- return 0;
-}
-
-static int fsa9480_probe(struct i2c_client *client,
- const struct i2c_device_id *id)
-{
- struct i2c_adapter *adapter = to_i2c_adapter(client->dev.parent);
- struct fsa9480_usbsw *usbsw;
- int ret = 0;
-
- if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA))
- return -EIO;
-
- usbsw = kzalloc(sizeof(struct fsa9480_usbsw), GFP_KERNEL);
- if (!usbsw) {
- dev_err(&client->dev, "failed to allocate driver data\n");
- return -ENOMEM;
- }
-
- usbsw->client = client;
- usbsw->pdata = client->dev.platform_data;
-
- chip = usbsw;
-
- i2c_set_clientdata(client, usbsw);
-
- ret = fsa9480_irq_init(usbsw);
- if (ret)
- goto fail1;
-
- ret = sysfs_create_group(&client->dev.kobj, &fsa9480_group);
- if (ret) {
- dev_err(&client->dev,
- "failed to create fsa9480 attribute group\n");
- goto fail2;
- }
-
- /* ADC Detect Time: 500ms */
- fsa9480_write_reg(client, FSA9480_REG_TIMING1, 0x6);
-
- if (chip->pdata->reset_cb)
- chip->pdata->reset_cb();
-
- /* device detection */
- fsa9480_detect_dev(usbsw, INT_ATTACH);
-
- pm_runtime_set_active(&client->dev);
-
- return 0;
-
-fail2:
- if (client->irq)
- free_irq(client->irq, usbsw);
-fail1:
- kfree(usbsw);
- return ret;
-}
-
-static int fsa9480_remove(struct i2c_client *client)
-{
- struct fsa9480_usbsw *usbsw = i2c_get_clientdata(client);
-
- if (client->irq)
- free_irq(client->irq, usbsw);
-
- sysfs_remove_group(&client->dev.kobj, &fsa9480_group);
- device_init_wakeup(&client->dev, 0);
- kfree(usbsw);
- return 0;
-}
-
-#ifdef CONFIG_PM_SLEEP
-
-static int fsa9480_suspend(struct device *dev)
-{
- struct i2c_client *client = to_i2c_client(dev);
- struct fsa9480_usbsw *usbsw = i2c_get_clientdata(client);
- struct fsa9480_platform_data *pdata = usbsw->pdata;
-
- if (device_may_wakeup(&client->dev) && client->irq)
- enable_irq_wake(client->irq);
-
- if (pdata->usb_power)
- pdata->usb_power(0);
-
- return 0;
-}
-
-static int fsa9480_resume(struct device *dev)
-{
- struct i2c_client *client = to_i2c_client(dev);
- struct fsa9480_usbsw *usbsw = i2c_get_clientdata(client);
- int dev1, dev2;
-
- if (device_may_wakeup(&client->dev) && client->irq)
- disable_irq_wake(client->irq);
-
- /*
- * Clear Pending interrupt. Note that detect_dev does what
- * the interrupt handler does. So, we don't miss pending and
- * we reenable interrupt if there is one.
- */
- fsa9480_read_reg(client, FSA9480_REG_INT1);
- fsa9480_read_reg(client, FSA9480_REG_INT2);
-
- dev1 = fsa9480_read_reg(client, FSA9480_REG_DEV_T1);
- dev2 = fsa9480_read_reg(client, FSA9480_REG_DEV_T2);
-
- /* device detection */
- fsa9480_detect_dev(usbsw, (dev1 || dev2) ? INT_ATTACH : INT_DETACH);
-
- return 0;
-}
-
-static SIMPLE_DEV_PM_OPS(fsa9480_pm_ops, fsa9480_suspend, fsa9480_resume);
-#define FSA9480_PM_OPS (&fsa9480_pm_ops)
-
-#else
-
-#define FSA9480_PM_OPS NULL
-
-#endif /* CONFIG_PM_SLEEP */
-
-static const struct i2c_device_id fsa9480_id[] = {
- {"fsa9480", 0},
- {}
-};
-MODULE_DEVICE_TABLE(i2c, fsa9480_id);
-
-static struct i2c_driver fsa9480_i2c_driver = {
- .driver = {
- .name = "fsa9480",
- .pm = FSA9480_PM_OPS,
- },
- .probe = fsa9480_probe,
- .remove = fsa9480_remove,
- .id_table = fsa9480_id,
-};
-
-module_i2c_driver(fsa9480_i2c_driver);
-
-MODULE_AUTHOR("Minkyu Kang <mk7.kang@samsung.com>");
-MODULE_DESCRIPTION("FSA9480 USB Switch driver");
-MODULE_LICENSE("GPL");
diff --git a/include/linux/platform_data/fsa9480.h b/include/linux/platform_data/fsa9480.h
deleted file mode 100644
index dea8d84448ec..000000000000
--- a/include/linux/platform_data/fsa9480.h
+++ /dev/null
@@ -1,24 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-only */
-/*
- * Copyright (C) 2010 Samsung Electronics
- * Minkyu Kang <mk7.kang@samsung.com>
- */
-
-#ifndef _FSA9480_H_
-#define _FSA9480_H_
-
-#define FSA9480_ATTACHED 1
-#define FSA9480_DETACHED 0
-
-struct fsa9480_platform_data {
- void (*cfg_gpio) (void);
- void (*usb_cb) (u8 attached);
- void (*uart_cb) (u8 attached);
- void (*charger_cb) (u8 attached);
- void (*jig_cb) (u8 attached);
- void (*reset_cb) (void);
- void (*usb_power) (u8 on);
- int wakeup;
-};
-
-#endif /* _FSA9480_H_ */
--
2.20.1
next reply other threads:[~2019-06-30 14:05 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CGME20190630140521epcas3p4f9a3ee4d4ef3a1f6f57a855ef0eedb40@epcas3p4.samsung.com>
2019-06-30 14:03 ` Linus Walleij [this message]
2019-06-30 17:16 ` [PATCH] misc: fsa9480: Delete this driver Paweł Chmiel
2019-07-01 1:27 ` Chanwoo Choi
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