/* * Copyright (c) 2003-2015 Broadcom Corporation * * This file is licensed under the terms of the GNU General Public * License version 2. This program is licensed "as is" without any * warranty of any kind, whether express or implied. */ #include <linux/acpi.h> #include <linux/clk.h> #include <linux/completion.h> #include <linux/i2c.h> #include <linux/i2c-smbus.h> #include <linux/init.h> #include <linux/interrupt.h> #include <linux/io.h> #include <linux/kernel.h> #include <linux/module.h> #include <linux/platform_device.h> #include <linux/delay.h> #define XLP9XX_I2C_DIV … #define XLP9XX_I2C_CTRL … #define XLP9XX_I2C_CMD … #define XLP9XX_I2C_STATUS … #define XLP9XX_I2C_MTXFIFO … #define XLP9XX_I2C_MRXFIFO … #define XLP9XX_I2C_MFIFOCTRL … #define XLP9XX_I2C_STXFIFO … #define XLP9XX_I2C_SRXFIFO … #define XLP9XX_I2C_SFIFOCTRL … #define XLP9XX_I2C_SLAVEADDR … #define XLP9XX_I2C_OWNADDR … #define XLP9XX_I2C_FIFOWCNT … #define XLP9XX_I2C_INTEN … #define XLP9XX_I2C_INTST … #define XLP9XX_I2C_WAITCNT … #define XLP9XX_I2C_TIMEOUT … #define XLP9XX_I2C_GENCALLADDR … #define XLP9XX_I2C_STATUS_BUSY … #define XLP9XX_I2C_CMD_START … #define XLP9XX_I2C_CMD_STOP … #define XLP9XX_I2C_CMD_READ … #define XLP9XX_I2C_CMD_WRITE … #define XLP9XX_I2C_CMD_ACK … #define XLP9XX_I2C_CTRL_MCTLEN_SHIFT … #define XLP9XX_I2C_CTRL_MCTLEN_MASK … #define XLP9XX_I2C_CTRL_RST … #define XLP9XX_I2C_CTRL_EN … #define XLP9XX_I2C_CTRL_MASTER … #define XLP9XX_I2C_CTRL_FIFORD … #define XLP9XX_I2C_CTRL_ADDMODE … #define XLP9XX_I2C_INTEN_NACKADDR … #define XLP9XX_I2C_INTEN_SADDR … #define XLP9XX_I2C_INTEN_DATADONE … #define XLP9XX_I2C_INTEN_ARLOST … #define XLP9XX_I2C_INTEN_MFIFOFULL … #define XLP9XX_I2C_INTEN_MFIFOEMTY … #define XLP9XX_I2C_INTEN_MFIFOHI … #define XLP9XX_I2C_INTEN_BUSERR … #define XLP9XX_I2C_MFIFOCTRL_HITH_SHIFT … #define XLP9XX_I2C_MFIFOCTRL_LOTH_SHIFT … #define XLP9XX_I2C_MFIFOCTRL_RST … #define XLP9XX_I2C_SLAVEADDR_RW … #define XLP9XX_I2C_SLAVEADDR_ADDR_SHIFT … #define XLP9XX_I2C_IP_CLK_FREQ … #define XLP9XX_I2C_FIFO_SIZE … #define XLP9XX_I2C_TIMEOUT_MS … #define XLP9XX_I2C_BUSY_TIMEOUT … #define XLP9XX_I2C_FIFO_WCNT_MASK … #define XLP9XX_I2C_STATUS_ERRMASK … struct xlp9xx_i2c_dev { … }; static inline void xlp9xx_write_i2c_reg(struct xlp9xx_i2c_dev *priv, unsigned long reg, u32 val) { … } static inline u32 xlp9xx_read_i2c_reg(struct xlp9xx_i2c_dev *priv, unsigned long reg) { … } static void xlp9xx_i2c_mask_irq(struct xlp9xx_i2c_dev *priv, u32 mask) { … } static void xlp9xx_i2c_unmask_irq(struct xlp9xx_i2c_dev *priv, u32 mask) { … } static void xlp9xx_i2c_update_rx_fifo_thres(struct xlp9xx_i2c_dev *priv) { … } static void xlp9xx_i2c_fill_tx_fifo(struct xlp9xx_i2c_dev *priv) { … } static void xlp9xx_i2c_update_rlen(struct xlp9xx_i2c_dev *priv) { … } static void xlp9xx_i2c_drain_rx_fifo(struct xlp9xx_i2c_dev *priv) { … } static irqreturn_t xlp9xx_i2c_isr(int irq, void *dev_id) { … } static int xlp9xx_i2c_check_bus_status(struct xlp9xx_i2c_dev *priv) { … } static int xlp9xx_i2c_init(struct xlp9xx_i2c_dev *priv) { … } static int xlp9xx_i2c_xfer_msg(struct xlp9xx_i2c_dev *priv, struct i2c_msg *msg, int last_msg) { … } static int xlp9xx_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg *msgs, int num) { … } static u32 xlp9xx_i2c_functionality(struct i2c_adapter *adapter) { … } static const struct i2c_algorithm xlp9xx_i2c_algo = …; static int xlp9xx_i2c_get_frequency(struct platform_device *pdev, struct xlp9xx_i2c_dev *priv) { … } static int xlp9xx_i2c_smbus_setup(struct xlp9xx_i2c_dev *priv, struct platform_device *pdev) { … } static int xlp9xx_i2c_probe(struct platform_device *pdev) { … } static void xlp9xx_i2c_remove(struct platform_device *pdev) { … } #ifdef CONFIG_ACPI static const struct acpi_device_id xlp9xx_i2c_acpi_ids[] = …; MODULE_DEVICE_TABLE(acpi, xlp9xx_i2c_acpi_ids); #endif static struct platform_driver xlp9xx_i2c_driver = …; module_platform_driver(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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