diff options
Diffstat (limited to 'drivers/i2c/busses/i2c-kempld.c')
| -rw-r--r-- | drivers/i2c/busses/i2c-kempld.c | 55 |
1 files changed, 21 insertions, 34 deletions
diff --git a/drivers/i2c/busses/i2c-kempld.c b/drivers/i2c/busses/i2c-kempld.c index 25993d2e64bf..9b4c7cba62b6 100644 --- a/drivers/i2c/busses/i2c-kempld.c +++ b/drivers/i2c/busses/i2c-kempld.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * I2C bus driver for Kontron COM modules * @@ -5,15 +6,6 @@ * Author: Michael Brunner <michael.brunner@kontron.com> * * The driver is based on the i2c-ocores driver by Peter Korsgaard. - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License 2 as published - * by the Free Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. */ #include <linux/module.h> @@ -123,16 +115,13 @@ static int kempld_i2c_process(struct kempld_i2c_data *i2c) if (i2c->state == STATE_ADDR) { /* 10 bit address? */ if (i2c->msg->flags & I2C_M_TEN) { - addr = 0xf0 | ((i2c->msg->addr >> 7) & 0x6); + addr = i2c_10bit_addr_hi_from_msg(msg); i2c->state = STATE_ADDR10; } else { - addr = (i2c->msg->addr << 1); + addr = i2c_8bit_addr_from_msg(i2c->msg); i2c->state = STATE_START; } - /* Set read bit if necessary */ - addr |= (i2c->msg->flags & I2C_M_RD) ? 1 : 0; - kempld_write8(pld, KEMPLD_I2C_DATA, addr); kempld_write8(pld, KEMPLD_I2C_CMD, I2C_CMD_START); @@ -141,10 +130,12 @@ static int kempld_i2c_process(struct kempld_i2c_data *i2c) /* Second part of 10 bit addressing */ if (i2c->state == STATE_ADDR10) { - kempld_write8(pld, KEMPLD_I2C_DATA, i2c->msg->addr & 0xff); + addr = i2c_10bit_addr_lo_from_msg(msg); + i2c->state = STATE_START; + + kempld_write8(pld, KEMPLD_I2C_DATA, addr); kempld_write8(pld, KEMPLD_I2C_CMD, I2C_CMD_WRITE); - i2c->state = STATE_START; return 0; } @@ -285,14 +276,14 @@ static u32 kempld_i2c_func(struct i2c_adapter *adap) } static const struct i2c_algorithm kempld_i2c_algorithm = { - .master_xfer = kempld_i2c_xfer, - .functionality = kempld_i2c_func, + .xfer = kempld_i2c_xfer, + .functionality = kempld_i2c_func, }; -static struct i2c_adapter kempld_i2c_adapter = { +static const struct i2c_adapter kempld_i2c_adapter = { .owner = THIS_MODULE, .name = "i2c-kempld", - .class = I2C_CLASS_HWMON | I2C_CLASS_SPD, + .class = I2C_CLASS_HWMON | I2C_CLASS_DEPRECATED, .algo = &kempld_i2c_algorithm, }; @@ -311,6 +302,7 @@ static int kempld_i2c_probe(struct platform_device *pdev) i2c->dev = &pdev->dev; i2c->adap = kempld_i2c_adapter; i2c->adap.dev.parent = i2c->dev; + ACPI_COMPANION_SET(&i2c->adap.dev, ACPI_COMPANION(&pdev->dev)); i2c_set_adapdata(&i2c->adap, i2c); platform_set_drvdata(pdev, i2c); @@ -336,7 +328,7 @@ static int kempld_i2c_probe(struct platform_device *pdev) return 0; } -static int kempld_i2c_remove(struct platform_device *pdev) +static void kempld_i2c_remove(struct platform_device *pdev) { struct kempld_i2c_data *i2c = platform_get_drvdata(pdev); struct kempld_device_data *pld = i2c->pld; @@ -355,14 +347,11 @@ static int kempld_i2c_remove(struct platform_device *pdev) kempld_release_mutex(pld); i2c_del_adapter(&i2c->adap); - - return 0; } -#ifdef CONFIG_PM -static int kempld_i2c_suspend(struct platform_device *pdev, pm_message_t state) +static int kempld_i2c_suspend(struct device *dev) { - struct kempld_i2c_data *i2c = platform_get_drvdata(pdev); + struct kempld_i2c_data *i2c = dev_get_drvdata(dev); struct kempld_device_data *pld = i2c->pld; u8 ctrl; @@ -375,9 +364,9 @@ static int kempld_i2c_suspend(struct platform_device *pdev, pm_message_t state) return 0; } -static int kempld_i2c_resume(struct platform_device *pdev) +static int kempld_i2c_resume(struct device *dev) { - struct kempld_i2c_data *i2c = platform_get_drvdata(pdev); + struct kempld_i2c_data *i2c = dev_get_drvdata(dev); struct kempld_device_data *pld = i2c->pld; kempld_get_mutex(pld); @@ -386,19 +375,17 @@ static int kempld_i2c_resume(struct platform_device *pdev) return 0; } -#else -#define kempld_i2c_suspend NULL -#define kempld_i2c_resume NULL -#endif + +static DEFINE_SIMPLE_DEV_PM_OPS(kempld_i2c_pm_ops, + kempld_i2c_suspend, kempld_i2c_resume); static struct platform_driver kempld_i2c_driver = { .driver = { .name = "kempld-i2c", + .pm = pm_sleep_ptr(&kempld_i2c_pm_ops), }, .probe = kempld_i2c_probe, .remove = kempld_i2c_remove, - .suspend = kempld_i2c_suspend, - .resume = kempld_i2c_resume, }; module_platform_driver(kempld_i2c_driver); |