mirror of https://gitee.com/openkylin/linux.git
132 lines
2.8 KiB
C
132 lines
2.8 KiB
C
#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/module.h>
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#include <linux/string.h>
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#include <linux/slab.h>
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#include <linux/delay.h>
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#include <linux/jiffies.h>
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#include <linux/types.h>
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#include "drx_driver.h"
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#include "drx39xxj.h"
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/* Dummy function to satisfy drxj.c */
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int drxbsp_tuner_open(struct tuner_instance *tuner)
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{
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return DRX_STS_OK;
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}
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int drxbsp_tuner_close(struct tuner_instance *tuner)
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{
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return DRX_STS_OK;
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}
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int drxbsp_tuner_set_frequency(struct tuner_instance *tuner,
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u32 mode,
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s32 center_frequency)
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{
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return DRX_STS_OK;
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}
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int
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drxbsp_tuner_get_frequency(struct tuner_instance *tuner,
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u32 mode,
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s32 *r_ffrequency,
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s32 *i_ffrequency)
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{
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return DRX_STS_OK;
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}
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int drxbsp_hst_sleep(u32 n)
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{
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msleep(n);
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return DRX_STS_OK;
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}
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u32 drxbsp_hst_clock(void)
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{
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return jiffies_to_msecs(jiffies);
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}
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int drxbsp_hst_memcmp(void *s1, void *s2, u32 n)
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{
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return (memcmp(s1, s2, (size_t) n));
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}
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void *drxbsp_hst_memcpy(void *to, void *from, u32 n)
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{
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return (memcpy(to, from, (size_t) n));
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}
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int drxbsp_i2c_write_read(struct i2c_device_addr *w_dev_addr,
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u16 w_count,
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u8 *wData,
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struct i2c_device_addr *r_dev_addr,
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u16 r_count, u8 *r_data)
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{
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struct drx39xxj_state *state;
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struct i2c_msg msg[2];
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unsigned int num_msgs;
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if (w_dev_addr == NULL) {
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/* Read only */
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state = r_dev_addr->user_data;
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msg[0].addr = r_dev_addr->i2c_addr >> 1;
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msg[0].flags = I2C_M_RD;
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msg[0].buf = r_data;
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msg[0].len = r_count;
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num_msgs = 1;
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} else if (r_dev_addr == NULL) {
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/* Write only */
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state = w_dev_addr->user_data;
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msg[0].addr = w_dev_addr->i2c_addr >> 1;
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msg[0].flags = 0;
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msg[0].buf = wData;
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msg[0].len = w_count;
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num_msgs = 1;
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} else {
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/* Both write and read */
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state = w_dev_addr->user_data;
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msg[0].addr = w_dev_addr->i2c_addr >> 1;
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msg[0].flags = 0;
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msg[0].buf = wData;
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msg[0].len = w_count;
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msg[1].addr = r_dev_addr->i2c_addr >> 1;
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msg[1].flags = I2C_M_RD;
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msg[1].buf = r_data;
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msg[1].len = r_count;
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num_msgs = 2;
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}
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if (state->i2c == NULL) {
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printk("i2c was zero, aborting\n");
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return 0;
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}
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if (i2c_transfer(state->i2c, msg, num_msgs) != num_msgs) {
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printk(KERN_WARNING "drx3933: I2C write/read failed\n");
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return -EREMOTEIO;
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}
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return DRX_STS_OK;
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#ifdef DJH_DEBUG
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struct drx39xxj_state *state = w_dev_addr->user_data;
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struct i2c_msg msg[2] = {
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{.addr = w_dev_addr->i2c_addr,
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.flags = 0, .buf = wData, .len = w_count},
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{.addr = r_dev_addr->i2c_addr,
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.flags = I2C_M_RD, .buf = r_data, .len = r_count},
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};
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printk("drx3933 i2c operation addr=%x i2c=%p, wc=%x rc=%x\n",
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w_dev_addr->i2c_addr, state->i2c, w_count, r_count);
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if (i2c_transfer(state->i2c, msg, 2) != 2) {
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printk(KERN_WARNING "drx3933: I2C write/read failed\n");
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return -EREMOTEIO;
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}
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#endif
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return 0;
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}
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