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Date: Thu, 21 Jan 2021 10:28:46 +1300
From: Barry Song <baohua@...nel.org>
To: Arnd Bergmann <arnd@...nel.org>
Cc: linux-arm-kernel@...ts.infradead.org,
LKML <linux-kernel@...r.kernel.org>, linux-i2c@...r.kernel.org,
Arnd Bergmann <arnd@...db.de>
Subject: Re: [PATCH 1/3] i2c: remove sirf bus driver
Arnd Bergmann <arnd@...nel.org> 于2021年1月21日周四 上午2:28写道：
>
> From: Arnd Bergmann <arnd@...db.de>
>
> The CSR SiRF prima2/atlas platforms are getting removed, so this driver
> is no longer needed.
>
> Cc: Barry Song <baohua@...nel.org>
> Signed-off-by: Arnd Bergmann <arnd@...db.de>
Acked-by: Barry Song <baohua@...nel.org>
> ---
> .../devicetree/bindings/i2c/i2c-sirf.txt | 19 -
> drivers/i2c/busses/Kconfig | 10 -
> drivers/i2c/busses/Makefile | 1 -
> drivers/i2c/busses/i2c-sirf.c | 475 ------------------
> 4 files changed, 505 deletions(-)
> delete mode 100644 Documentation/devicetree/bindings/i2c/i2c-sirf.txt
> delete mode 100644 drivers/i2c/busses/i2c-sirf.c
>
> diff --git a/Documentation/devicetree/bindings/i2c/i2c-sirf.txt b/Documentation/devicetree/bindings/i2c/i2c-sirf.txt
> deleted file mode 100644
> index 2701eefb00f7..000000000000
> --- a/Documentation/devicetree/bindings/i2c/i2c-sirf.txt
> +++ /dev/null
> @@ -1,19 +0,0 @@
> -I2C for SiRFprimaII platforms
> -
> -Required properties :
> -- compatible : Must be "sirf,prima2-i2c"
> -- reg: physical base address of the controller and length of memory mapped
> - region.
> -- interrupts: interrupt number to the cpu.
> -
> -Optional properties:
> -- clock-frequency : Constains desired I2C/HS-I2C bus clock frequency in Hz.
> - The absence of the property indicates the default frequency 100 kHz.
> -
> -Examples :
> -
> -i2c0: i2c@...e0000 {
> - compatible = "sirf,prima2-i2c";
> - reg = <0xb00e0000 0x10000>;
> - interrupts = <24>;
> -};
> diff --git a/drivers/i2c/busses/Kconfig b/drivers/i2c/busses/Kconfig
> index 0e284fb750e5..85ed2b2bd31a 100644
> --- a/drivers/i2c/busses/Kconfig
> +++ b/drivers/i2c/busses/Kconfig
> @@ -1000,16 +1000,6 @@ config I2C_SIMTEC
> This driver can also be built as a module. If so, the module
> will be called i2c-simtec.
>
> -config I2C_SIRF
> - tristate "CSR SiRFprimaII I2C interface"
> - depends on ARCH_SIRF || COMPILE_TEST
> - help
> - If you say yes to this option, support will be included for the
> - CSR SiRFprimaII I2C interface.
> -
> - This driver can also be built as a module. If so, the module
> - will be called i2c-sirf.
> -
> config I2C_SPRD
> tristate "Spreadtrum I2C interface"
> depends on I2C=y && (ARCH_SPRD || COMPILE_TEST)
> diff --git a/drivers/i2c/busses/Makefile b/drivers/i2c/busses/Makefile
> index 683c49faca05..45ce4caa0c2b 100644
> --- a/drivers/i2c/busses/Makefile
> +++ b/drivers/i2c/busses/Makefile
> @@ -99,7 +99,6 @@ obj-$(CONFIG_I2C_S3C2410) += i2c-s3c2410.o
> obj-$(CONFIG_I2C_SH7760) += i2c-sh7760.o
> obj-$(CONFIG_I2C_SH_MOBILE) += i2c-sh_mobile.o
> obj-$(CONFIG_I2C_SIMTEC) += i2c-simtec.o
> -obj-$(CONFIG_I2C_SIRF) += i2c-sirf.o
> obj-$(CONFIG_I2C_SPRD) += i2c-sprd.o
> obj-$(CONFIG_I2C_ST) += i2c-st.o
> obj-$(CONFIG_I2C_STM32F4) += i2c-stm32f4.o
> diff --git a/drivers/i2c/busses/i2c-sirf.c b/drivers/i2c/busses/i2c-sirf.c
> deleted file mode 100644
> index 30db8fafe078..000000000000
> --- a/drivers/i2c/busses/i2c-sirf.c
> +++ /dev/null
> @@ -1,475 +0,0 @@
> -// SPDX-License-Identifier: GPL-2.0-or-later
> -/*
> - * I2C bus driver for CSR SiRFprimaII
> - *
> - * Copyright (c) 2011 Cambridge Silicon Radio Limited, a CSR plc group company.
> - */
> -
> -#include <linux/interrupt.h>
> -#include <linux/kernel.h>
> -#include <linux/module.h>
> -#include <linux/slab.h>
> -#include <linux/platform_device.h>
> -#include <linux/i2c.h>
> -#include <linux/clk.h>
> -#include <linux/err.h>
> -#include <linux/io.h>
> -
> -#define SIRFSOC_I2C_CLK_CTRL 0x00
> -#define SIRFSOC_I2C_STATUS 0x0C
> -#define SIRFSOC_I2C_CTRL 0x10
> -#define SIRFSOC_I2C_IO_CTRL 0x14
> -#define SIRFSOC_I2C_SDA_DELAY 0x18
> -#define SIRFSOC_I2C_CMD_START 0x1C
> -#define SIRFSOC_I2C_CMD_BUF 0x30
> -#define SIRFSOC_I2C_DATA_BUF 0x80
> -
> -#define SIRFSOC_I2C_CMD_BUF_MAX 16
> -#define SIRFSOC_I2C_DATA_BUF_MAX 16
> -
> -#define SIRFSOC_I2C_CMD(x) (SIRFSOC_I2C_CMD_BUF + (x)*0x04)
> -#define SIRFSOC_I2C_DATA_MASK(x) (0xFF<<(((x)&3)*8))
> -#define SIRFSOC_I2C_DATA_SHIFT(x) (((x)&3)*8)
> -
> -#define SIRFSOC_I2C_DIV_MASK (0xFFFF)
> -
> -/* I2C status flags */
> -#define SIRFSOC_I2C_STAT_BUSY BIT(0)
> -#define SIRFSOC_I2C_STAT_TIP BIT(1)
> -#define SIRFSOC_I2C_STAT_NACK BIT(2)
> -#define SIRFSOC_I2C_STAT_TR_INT BIT(4)
> -#define SIRFSOC_I2C_STAT_STOP BIT(6)
> -#define SIRFSOC_I2C_STAT_CMD_DONE BIT(8)
> -#define SIRFSOC_I2C_STAT_ERR BIT(9)
> -#define SIRFSOC_I2C_CMD_INDEX (0x1F<<16)
> -
> -/* I2C control flags */
> -#define SIRFSOC_I2C_RESET BIT(0)
> -#define SIRFSOC_I2C_CORE_EN BIT(1)
> -#define SIRFSOC_I2C_MASTER_MODE BIT(2)
> -#define SIRFSOC_I2C_CMD_DONE_EN BIT(11)
> -#define SIRFSOC_I2C_ERR_INT_EN BIT(12)
> -
> -#define SIRFSOC_I2C_SDA_DELAY_MASK (0xFF)
> -#define SIRFSOC_I2C_SCLF_FILTER (3<<8)
> -
> -#define SIRFSOC_I2C_START_CMD BIT(0)
> -
> -#define SIRFSOC_I2C_CMD_RP(x) ((x)&0x7)
> -#define SIRFSOC_I2C_NACK BIT(3)
> -#define SIRFSOC_I2C_WRITE BIT(4)
> -#define SIRFSOC_I2C_READ BIT(5)
> -#define SIRFSOC_I2C_STOP BIT(6)
> -#define SIRFSOC_I2C_START BIT(7)
> -
> -#define SIRFSOC_I2C_ERR_NOACK 1
> -#define SIRFSOC_I2C_ERR_TIMEOUT 2
> -
> -struct sirfsoc_i2c {
> - void __iomem *base;
> - struct clk *clk;
> - u32 cmd_ptr; /* Current position in CMD buffer */
> - u8 *buf; /* Buffer passed by user */
> - u32 msg_len; /* Message length */
> - u32 finished_len; /* number of bytes read/written */
> - u32 read_cmd_len; /* number of read cmd sent */
> - int msg_read; /* 1 indicates a read message */
> - int err_status; /* 1 indicates an error on bus */
> -
> - u32 sda_delay; /* For suspend/resume */
> - u32 clk_div;
> - int last; /* Last message in transfer, STOP cmd can be sent */
> -
> - struct completion done; /* indicates completion of message transfer */
> - struct i2c_adapter adapter;
> -};
> -
> -static void i2c_sirfsoc_read_data(struct sirfsoc_i2c *siic)
> -{
> - u32 data = 0;
> - int i;
> -
> - for (i = 0; i < siic->read_cmd_len; i++) {
> - if (!(i & 0x3))
> - data = readl(siic->base + SIRFSOC_I2C_DATA_BUF + i);
> - siic->buf[siic->finished_len++] =
> - (u8)((data & SIRFSOC_I2C_DATA_MASK(i)) >>
> - SIRFSOC_I2C_DATA_SHIFT(i));
> - }
> -}
> -
> -static void i2c_sirfsoc_queue_cmd(struct sirfsoc_i2c *siic)
> -{
> - u32 regval;
> - int i = 0;
> -
> - if (siic->msg_read) {
> - while (((siic->finished_len + i) < siic->msg_len)
> - && (siic->cmd_ptr < SIRFSOC_I2C_CMD_BUF_MAX)) {
> - regval = SIRFSOC_I2C_READ | SIRFSOC_I2C_CMD_RP(0);
> - if (((siic->finished_len + i) ==
> - (siic->msg_len - 1)) && siic->last)
> - regval |= SIRFSOC_I2C_STOP | SIRFSOC_I2C_NACK;
> - writel(regval,
> - siic->base + SIRFSOC_I2C_CMD(siic->cmd_ptr++));
> - i++;
> - }
> -
> - siic->read_cmd_len = i;
> - } else {
> - while ((siic->cmd_ptr < SIRFSOC_I2C_CMD_BUF_MAX - 1)
> - && (siic->finished_len < siic->msg_len)) {
> - regval = SIRFSOC_I2C_WRITE | SIRFSOC_I2C_CMD_RP(0);
> - if ((siic->finished_len == (siic->msg_len - 1))
> - && siic->last)
> - regval |= SIRFSOC_I2C_STOP;
> - writel(regval,
> - siic->base + SIRFSOC_I2C_CMD(siic->cmd_ptr++));
> - writel(siic->buf[siic->finished_len++],
> - siic->base + SIRFSOC_I2C_CMD(siic->cmd_ptr++));
> - }
> - }
> - siic->cmd_ptr = 0;
> -
> - /* Trigger the transfer */
> - writel(SIRFSOC_I2C_START_CMD, siic->base + SIRFSOC_I2C_CMD_START);
> -}
> -
> -static irqreturn_t i2c_sirfsoc_irq(int irq, void *dev_id)
> -{
> - struct sirfsoc_i2c *siic = (struct sirfsoc_i2c *)dev_id;
> - u32 i2c_stat = readl(siic->base + SIRFSOC_I2C_STATUS);
> -
> - if (i2c_stat & SIRFSOC_I2C_STAT_ERR) {
> - /* Error conditions */
> - siic->err_status = SIRFSOC_I2C_ERR_NOACK;
> - writel(SIRFSOC_I2C_STAT_ERR, siic->base + SIRFSOC_I2C_STATUS);
> -
> - if (i2c_stat & SIRFSOC_I2C_STAT_NACK)
> - dev_dbg(&siic->adapter.dev, "ACK not received\n");
> - else
> - dev_err(&siic->adapter.dev, "I2C error\n");
> -
> - /*
> - * Due to hardware ANOMALY, we need to reset I2C earlier after
> - * we get NOACK while accessing non-existing clients, otherwise
> - * we will get errors even we access existing clients later
> - */
> - writel(readl(siic->base + SIRFSOC_I2C_CTRL) | SIRFSOC_I2C_RESET,
> - siic->base + SIRFSOC_I2C_CTRL);
> - while (readl(siic->base + SIRFSOC_I2C_CTRL) & SIRFSOC_I2C_RESET)
> - cpu_relax();
> -
> - complete(&siic->done);
> - } else if (i2c_stat & SIRFSOC_I2C_STAT_CMD_DONE) {
> - /* CMD buffer execution complete */
> - if (siic->msg_read)
> - i2c_sirfsoc_read_data(siic);
> - if (siic->finished_len == siic->msg_len)
> - complete(&siic->done);
> - else /* Fill a new CMD buffer for left data */
> - i2c_sirfsoc_queue_cmd(siic);
> -
> - writel(SIRFSOC_I2C_STAT_CMD_DONE, siic->base + SIRFSOC_I2C_STATUS);
> - }
> -
> - return IRQ_HANDLED;
> -}
> -
> -static void i2c_sirfsoc_set_address(struct sirfsoc_i2c *siic,
> - struct i2c_msg *msg)
> -{
> - unsigned char addr;
> - u32 regval = SIRFSOC_I2C_START | SIRFSOC_I2C_CMD_RP(0) | SIRFSOC_I2C_WRITE;
> -
> - /* no data and last message -> add STOP */
> - if (siic->last && (msg->len == 0))
> - regval |= SIRFSOC_I2C_STOP;
> -
> - writel(regval, siic->base + SIRFSOC_I2C_CMD(siic->cmd_ptr++));
> -
> - addr = i2c_8bit_addr_from_msg(msg);
> -
> - /* Reverse direction bit */
> - if (msg->flags & I2C_M_REV_DIR_ADDR)
> - addr ^= 1;
> -
> - writel(addr, siic->base + SIRFSOC_I2C_CMD(siic->cmd_ptr++));
> -}
> -
> -static int i2c_sirfsoc_xfer_msg(struct sirfsoc_i2c *siic, struct i2c_msg *msg)
> -{
> - u32 regval = readl(siic->base + SIRFSOC_I2C_CTRL);
> - /* timeout waiting for the xfer to finish or fail */
> - int timeout = msecs_to_jiffies((msg->len + 1) * 50);
> -
> - i2c_sirfsoc_set_address(siic, msg);
> -
> - writel(regval | SIRFSOC_I2C_CMD_DONE_EN | SIRFSOC_I2C_ERR_INT_EN,
> - siic->base + SIRFSOC_I2C_CTRL);
> - i2c_sirfsoc_queue_cmd(siic);
> -
> - if (wait_for_completion_timeout(&siic->done, timeout) == 0) {
> - siic->err_status = SIRFSOC_I2C_ERR_TIMEOUT;
> - dev_err(&siic->adapter.dev, "Transfer timeout\n");
> - }
> -
> - writel(regval & ~(SIRFSOC_I2C_CMD_DONE_EN | SIRFSOC_I2C_ERR_INT_EN),
> - siic->base + SIRFSOC_I2C_CTRL);
> - writel(0, siic->base + SIRFSOC_I2C_CMD_START);
> -
> - /* i2c control doesn't response, reset it */
> - if (siic->err_status == SIRFSOC_I2C_ERR_TIMEOUT) {
> - writel(readl(siic->base + SIRFSOC_I2C_CTRL) | SIRFSOC_I2C_RESET,
> - siic->base + SIRFSOC_I2C_CTRL);
> - while (readl(siic->base + SIRFSOC_I2C_CTRL) & SIRFSOC_I2C_RESET)
> - cpu_relax();
> - }
> - return siic->err_status ? -EAGAIN : 0;
> -}
> -
> -static u32 i2c_sirfsoc_func(struct i2c_adapter *adap)
> -{
> - return I2C_FUNC_I2C | I2C_FUNC_SMBUS_EMUL;
> -}
> -
> -static int i2c_sirfsoc_xfer(struct i2c_adapter *adap, struct i2c_msg *msgs,
> - int num)
> -{
> - struct sirfsoc_i2c *siic = adap->algo_data;
> - int i, ret;
> -
> - clk_enable(siic->clk);
> -
> - for (i = 0; i < num; i++) {
> - siic->buf = msgs[i].buf;
> - siic->msg_len = msgs[i].len;
> - siic->msg_read = !!(msgs[i].flags & I2C_M_RD);
> - siic->err_status = 0;
> - siic->cmd_ptr = 0;
> - siic->finished_len = 0;
> - siic->last = (i == (num - 1));
> -
> - ret = i2c_sirfsoc_xfer_msg(siic, &msgs[i]);
> - if (ret) {
> - clk_disable(siic->clk);
> - return ret;
> - }
> - }
> -
> - clk_disable(siic->clk);
> - return num;
> -}
> -
> -/* I2C algorithms associated with this master controller driver */
> -static const struct i2c_algorithm i2c_sirfsoc_algo = {
> - .master_xfer = i2c_sirfsoc_xfer,
> - .functionality = i2c_sirfsoc_func,
> -};
> -
> -static int i2c_sirfsoc_probe(struct platform_device *pdev)
> -{
> - struct sirfsoc_i2c *siic;
> - struct i2c_adapter *adap;
> - struct clk *clk;
> - int bitrate;
> - int ctrl_speed;
> - int irq;
> -
> - int err;
> - u32 regval;
> -
> - clk = clk_get(&pdev->dev, NULL);
> - if (IS_ERR(clk)) {
> - err = PTR_ERR(clk);
> - dev_err(&pdev->dev, "Clock get failed\n");
> - goto err_get_clk;
> - }
> -
> - err = clk_prepare(clk);
> - if (err) {
> - dev_err(&pdev->dev, "Clock prepare failed\n");
> - goto err_clk_prep;
> - }
> -
> - err = clk_enable(clk);
> - if (err) {
> - dev_err(&pdev->dev, "Clock enable failed\n");
> - goto err_clk_en;
> - }
> -
> - ctrl_speed = clk_get_rate(clk);
> -
> - siic = devm_kzalloc(&pdev->dev, sizeof(*siic), GFP_KERNEL);
> - if (!siic) {
> - err = -ENOMEM;
> - goto out;
> - }
> - adap = &siic->adapter;
> - adap->class = I2C_CLASS_DEPRECATED;
> -
> - siic->base = devm_platform_ioremap_resource(pdev, 0);
> - if (IS_ERR(siic->base)) {
> - err = PTR_ERR(siic->base);
> - goto out;
> - }
> -
> - irq = platform_get_irq(pdev, 0);
> - if (irq < 0) {
> - err = irq;
> - goto out;
> - }
> - err = devm_request_irq(&pdev->dev, irq, i2c_sirfsoc_irq, 0,
> - dev_name(&pdev->dev), siic);
> - if (err)
> - goto out;
> -
> - adap->algo = &i2c_sirfsoc_algo;
> - adap->algo_data = siic;
> - adap->retries = 3;
> -
> - adap->dev.of_node = pdev->dev.of_node;
> - adap->dev.parent = &pdev->dev;
> - adap->nr = pdev->id;
> -
> - strlcpy(adap->name, "sirfsoc-i2c", sizeof(adap->name));
> -
> - platform_set_drvdata(pdev, adap);
> - init_completion(&siic->done);
> -
> - /* Controller initialisation */
> -
> - writel(SIRFSOC_I2C_RESET, siic->base + SIRFSOC_I2C_CTRL);
> - while (readl(siic->base + SIRFSOC_I2C_CTRL) & SIRFSOC_I2C_RESET)
> - cpu_relax();
> - writel(SIRFSOC_I2C_CORE_EN | SIRFSOC_I2C_MASTER_MODE,
> - siic->base + SIRFSOC_I2C_CTRL);
> -
> - siic->clk = clk;
> -
> - err = of_property_read_u32(pdev->dev.of_node,
> - "clock-frequency", &bitrate);
> - if (err < 0)
> - bitrate = I2C_MAX_STANDARD_MODE_FREQ;
> -
> - /*
> - * Due to some hardware design issues, we need to tune the formula.
> - * Since i2c is open drain interface that allows the slave to
> - * stall the transaction by holding the SCL line at '0', the RTL
> - * implementation is waiting for SCL feedback from the pin after
> - * setting it to High-Z ('1'). This wait adds to the high-time
> - * interval counter few cycles of the input synchronization
> - * (depending on the SCL_FILTER_REG field), and also the time it
> - * takes for the board pull-up resistor to rise the SCL line.
> - * For slow SCL settings these additions are negligible,
> - * but they start to affect the speed when clock is set to faster
> - * frequencies.
> - * Through the actual tests, use the different user_div value(which
> - * in the divider formula 'Fio / (Fi2c * user_div)') to adapt
> - * the different ranges of i2c bus clock frequency, to make the SCL
> - * more accurate.
> - */
> - if (bitrate <= 30000)
> - regval = ctrl_speed / (bitrate * 5);
> - else if (bitrate > 30000 && bitrate <= 280000)
> - regval = (2 * ctrl_speed) / (bitrate * 11);
> - else
> - regval = ctrl_speed / (bitrate * 6);
> -
> - writel(regval, siic->base + SIRFSOC_I2C_CLK_CTRL);
> - if (regval > 0xFF)
> - writel(0xFF, siic->base + SIRFSOC_I2C_SDA_DELAY);
> - else
> - writel(regval, siic->base + SIRFSOC_I2C_SDA_DELAY);
> -
> - err = i2c_add_numbered_adapter(adap);
> - if (err < 0)
> - goto out;
> -
> - clk_disable(clk);
> -
> - dev_info(&pdev->dev, " I2C adapter ready to operate\n");
> -
> - return 0;
> -
> -out:
> - clk_disable(clk);
> -err_clk_en:
> - clk_unprepare(clk);
> -err_clk_prep:
> - clk_put(clk);
> -err_get_clk:
> - return err;
> -}
> -
> -static int i2c_sirfsoc_remove(struct platform_device *pdev)
> -{
> - struct i2c_adapter *adapter = platform_get_drvdata(pdev);
> - struct sirfsoc_i2c *siic = adapter->algo_data;
> -
> - writel(SIRFSOC_I2C_RESET, siic->base + SIRFSOC_I2C_CTRL);
> - i2c_del_adapter(adapter);
> - clk_unprepare(siic->clk);
> - clk_put(siic->clk);
> - return 0;
> -}
> -
> -#ifdef CONFIG_PM
> -static int i2c_sirfsoc_suspend(struct device *dev)
> -{
> - struct i2c_adapter *adapter = dev_get_drvdata(dev);
> - struct sirfsoc_i2c *siic = adapter->algo_data;
> -
> - clk_enable(siic->clk);
> - siic->sda_delay = readl(siic->base + SIRFSOC_I2C_SDA_DELAY);
> - siic->clk_div = readl(siic->base + SIRFSOC_I2C_CLK_CTRL);
> - clk_disable(siic->clk);
> - return 0;
> -}
> -
> -static int i2c_sirfsoc_resume(struct device *dev)
> -{
> - struct i2c_adapter *adapter = dev_get_drvdata(dev);
> - struct sirfsoc_i2c *siic = adapter->algo_data;
> -
> - clk_enable(siic->clk);
> - writel(SIRFSOC_I2C_RESET, siic->base + SIRFSOC_I2C_CTRL);
> - while (readl(siic->base + SIRFSOC_I2C_CTRL) & SIRFSOC_I2C_RESET)
> - cpu_relax();
> - writel(SIRFSOC_I2C_CORE_EN | SIRFSOC_I2C_MASTER_MODE,
> - siic->base + SIRFSOC_I2C_CTRL);
> - writel(siic->clk_div, siic->base + SIRFSOC_I2C_CLK_CTRL);
> - writel(siic->sda_delay, siic->base + SIRFSOC_I2C_SDA_DELAY);
> - clk_disable(siic->clk);
> - return 0;
> -}
> -
> -static const struct dev_pm_ops i2c_sirfsoc_pm_ops = {
> - .suspend = i2c_sirfsoc_suspend,
> - .resume = i2c_sirfsoc_resume,
> -};
> -#endif
> -
> -static const struct of_device_id sirfsoc_i2c_of_match[] = {
> - { .compatible = "sirf,prima2-i2c", },
> - {},
> -};
> -MODULE_DEVICE_TABLE(of, sirfsoc_i2c_of_match);
> -
> -static struct platform_driver i2c_sirfsoc_driver = {
> - .driver = {
> - .name = "sirfsoc_i2c",
> -#ifdef CONFIG_PM
> - .pm = &i2c_sirfsoc_pm_ops,
> -#endif
> - .of_match_table = sirfsoc_i2c_of_match,
> - },
> - .probe = i2c_sirfsoc_probe,
> - .remove = i2c_sirfsoc_remove,
> -};
> -module_platform_driver(i2c_sirfsoc_driver);
> -
> -MODULE_DESCRIPTION("SiRF SoC I2C master controller driver");
> -MODULE_AUTHOR("Zhiwu Song <Zhiwu.Song@....com>");
> -MODULE_AUTHOR("Xiangzhen Ye <Xiangzhen.Ye@....com>");
> -MODULE_LICENSE("GPL v2");
> --
> 2.29.2
>
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