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Commit f76855ef authored by Hans de Goede's avatar Hans de Goede Committed by Mauro Carvalho Chehab
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media: atomisp: ov2680: Use the new ov_16bit_addr_reg_helpers.h 

Use the new ov_16bit_addr_reg_helpers.h instead of duplicating
the ovxxxx sensor I2C register access helpers found in many different
sensor drivers.
Signed-off-by: default avatarHans de Goede <hdegoede@redhat.com>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@kernel.org>
parent 65b39741
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Showing with 25 additions and 101 deletions
drivers/staging/media/atomisp/i2c/atomisp-ov2680.c
View file @ f76855ef
......@@ -30,6 +30,7 @@
#include <linux/slab.h>
#include <linux/i2c.h>
#include <linux/moduleparam.h>
#include <media/ov_16bit_addr_reg_helpers.h>
#include <media/v4l2-device.h>
#include <linux/io.h>
#include <linux/acpi.h>
......@@ -46,64 +47,6 @@ static enum atomisp_bayer_order ov2680_bayer_order_mapping[] = {
atomisp_bayer_order_rggb,
};
/* i2c read/write stuff */
static int ov2680_read_reg(struct i2c_client *client,
int len, u16 reg, u32 *val)
{
struct i2c_msg msgs[2];
u8 addr_buf[2] = { reg >> 8, reg & 0xff };
u8 data_buf[4] = { 0, };
int ret;
if (len > 4)
return -EINVAL;
msgs[0].addr = client->addr;
msgs[0].flags = 0;
msgs[0].len = ARRAY_SIZE(addr_buf);
msgs[0].buf = addr_buf;
msgs[1].addr = client->addr;
msgs[1].flags = I2C_M_RD;
msgs[1].len = len;
msgs[1].buf = &data_buf[4 - len];
ret = i2c_transfer(client->adapter, msgs, ARRAY_SIZE(msgs));
if (ret != ARRAY_SIZE(msgs)) {
dev_err(&client->dev, "read error: reg=0x%4x: %d\n", reg, ret);
return -EIO;
}
*val = get_unaligned_be32(data_buf);
return 0;
}
static int ov2680_write_reg(struct i2c_client *client, unsigned int len,
u16 reg, u16 val)
{
u8 buf[6];
int ret;
if (len == 2)
put_unaligned_be16(val, buf + 2);
else if (len == 1)
buf[2] = val;
else
return -EINVAL;
put_unaligned_be16(reg, buf);
ret = i2c_master_send(client, buf, len + 2);
if (ret != len + 2) {
dev_err(&client->dev, "write error %d reg 0x%04x, val 0x%02x: buf sent: %*ph\n",
ret, reg, val, len + 2, &buf);
return -EIO;
}
return 0;
}
static int ov2680_write_reg_array(struct i2c_client *client,
const struct ov2680_reg *reglist)
{
......@@ -111,7 +54,7 @@ static int ov2680_write_reg_array(struct i2c_client *client,
int ret;
for (; next->reg != 0; next++) {
ret = ov2680_write_reg(client, 1, next->reg, next->val);
ret = ov_write_reg8(client, next->reg, next->val);
if (ret)
return ret;
}
......@@ -135,8 +78,7 @@ static long __ov2680_set_exposure(struct v4l2_subdev *sd, int coarse_itg,
vts = dev->res->lines_per_frame;
/* group hold */
ret = ov2680_write_reg(client, 1,
OV2680_GROUP_ACCESS, 0x00);
ret = ov_write_reg8(client, OV2680_GROUP_ACCESS, 0x00);
if (ret) {
dev_err(&client->dev, "%s: write 0x%02x: error, aborted\n",
__func__, OV2680_GROUP_ACCESS);
......@@ -147,7 +89,7 @@ static long __ov2680_set_exposure(struct v4l2_subdev *sd, int coarse_itg,
if (coarse_itg > vts - OV2680_INTEGRATION_TIME_MARGIN)
vts = (u16)coarse_itg + OV2680_INTEGRATION_TIME_MARGIN;
ret = ov2680_write_reg(client, 2, OV2680_TIMING_VTS_H, vts);
ret = ov_write_reg16(client, OV2680_TIMING_VTS_H, vts);
if (ret) {
dev_err(&client->dev, "%s: write 0x%02x: error, aborted\n",
__func__, OV2680_TIMING_VTS_H);
......@@ -158,24 +100,21 @@ static long __ov2680_set_exposure(struct v4l2_subdev *sd, int coarse_itg,
/* Lower four bit should be 0*/
exp_val = coarse_itg << 4;
ret = ov2680_write_reg(client, 1,
OV2680_EXPOSURE_L, exp_val & 0xFF);
ret = ov_write_reg8(client, OV2680_EXPOSURE_L, exp_val & 0xFF);
if (ret) {
dev_err(&client->dev, "%s: write 0x%02x: error, aborted\n",
__func__, OV2680_EXPOSURE_L);
return ret;
}
ret = ov2680_write_reg(client, 1,
OV2680_EXPOSURE_M, (exp_val >> 8) & 0xFF);
ret = ov_write_reg8(client, OV2680_EXPOSURE_M, (exp_val >> 8) & 0xFF);
if (ret) {
dev_err(&client->dev, "%s: write 0x%02x: error, aborted\n",
__func__, OV2680_EXPOSURE_M);
return ret;
}
ret = ov2680_write_reg(client, 1,
OV2680_EXPOSURE_H, (exp_val >> 16) & 0x0F);
ret = ov_write_reg8(client, OV2680_EXPOSURE_H, (exp_val >> 16) & 0x0F);
if (ret) {
dev_err(&client->dev, "%s: write 0x%02x: error, aborted\n",
__func__, OV2680_EXPOSURE_H);
......@@ -183,7 +122,7 @@ static long __ov2680_set_exposure(struct v4l2_subdev *sd, int coarse_itg,
}
/* Analog gain */
ret = ov2680_write_reg(client, 2, OV2680_AGC_H, gain);
ret = ov_write_reg16(client, OV2680_AGC_H, gain);
if (ret) {
dev_err(&client->dev, "%s: write 0x%02x: error, aborted\n",
__func__, OV2680_AGC_H);
......@@ -191,8 +130,7 @@ static long __ov2680_set_exposure(struct v4l2_subdev *sd, int coarse_itg,
}
/* Digital gain */
if (digitgain) {
ret = ov2680_write_reg(client, 2,
OV2680_MWB_RED_GAIN_H, digitgain);
ret = ov_write_reg16(client, OV2680_MWB_RED_GAIN_H, digitgain);
if (ret) {
dev_err(&client->dev,
"%s: write 0x%02x: error, aborted\n",
......@@ -200,8 +138,7 @@ static long __ov2680_set_exposure(struct v4l2_subdev *sd, int coarse_itg,
return ret;
}
ret = ov2680_write_reg(client, 2,
OV2680_MWB_GREEN_GAIN_H, digitgain);
ret = ov_write_reg16(client, OV2680_MWB_GREEN_GAIN_H, digitgain);
if (ret) {
dev_err(&client->dev,
"%s: write 0x%02x: error, aborted\n",
......@@ -209,8 +146,7 @@ static long __ov2680_set_exposure(struct v4l2_subdev *sd, int coarse_itg,
return ret;
}
ret = ov2680_write_reg(client, 2,
OV2680_MWB_BLUE_GAIN_H, digitgain);
ret = ov_write_reg16(client, OV2680_MWB_BLUE_GAIN_H, digitgain);
if (ret) {
dev_err(&client->dev,
"%s: write 0x%02x: error, aborted\n",
......@@ -220,14 +156,12 @@ static long __ov2680_set_exposure(struct v4l2_subdev *sd, int coarse_itg,
}
/* End group */
ret = ov2680_write_reg(client, 1,
OV2680_GROUP_ACCESS, 0x10);
ret = ov_write_reg8(client, OV2680_GROUP_ACCESS, 0x10);
if (ret)
return ret;
/* Delay launch group */
ret = ov2680_write_reg(client, 1,
OV2680_GROUP_ACCESS, 0xa0);
ret = ov_write_reg8(client, OV2680_GROUP_ACCESS, 0xa0);
if (ret)
return ret;
return ret;
......@@ -294,7 +228,7 @@ static int ov2680_q_exposure(struct v4l2_subdev *sd, s32 *value)
int ret;
/* get exposure */
ret = ov2680_read_reg(client, 3, OV2680_EXPOSURE_H, &reg_val);
ret = ov_read_reg24(client, OV2680_EXPOSURE_H, &reg_val);
if (ret)
return ret;
......@@ -312,7 +246,7 @@ static int ov2680_v_flip(struct v4l2_subdev *sd, s32 value)
u8 index;
dev_dbg(&client->dev, "@%s: value:%d\n", __func__, value);
ret = ov2680_read_reg(client, 1, OV2680_FLIP_REG, &val);
ret = ov_read_reg8(client, OV2680_FLIP_REG, &val);
if (ret)
return ret;
if (value)
......@@ -320,8 +254,7 @@ static int ov2680_v_flip(struct v4l2_subdev *sd, s32 value)
else
val &= ~OV2680_FLIP_MIRROR_BIT_ENABLE;
ret = ov2680_write_reg(client, 1,
OV2680_FLIP_REG, val);
ret = ov_write_reg8(client, OV2680_FLIP_REG, val);
if (ret)
return ret;
index = (v_flag > 0 ? OV2680_FLIP_BIT : 0) | (h_flag > 0 ? OV2680_MIRROR_BIT :
......@@ -343,7 +276,7 @@ static int ov2680_h_flip(struct v4l2_subdev *sd, s32 value)
dev_dbg(&client->dev, "@%s: value:%d\n", __func__, value);
ret = ov2680_read_reg(client, 1, OV2680_MIRROR_REG, &val);
ret = ov_read_reg8(client, OV2680_MIRROR_REG, &val);
if (ret)
return ret;
if (value)
......@@ -351,8 +284,7 @@ static int ov2680_h_flip(struct v4l2_subdev *sd, s32 value)
else
val &= ~OV2680_FLIP_MIRROR_BIT_ENABLE;
ret = ov2680_write_reg(client, 1,
OV2680_MIRROR_REG, val);
ret = ov_write_reg8(client, OV2680_MIRROR_REG, val);
if (ret)
return ret;
index = (v_flag > 0 ? OV2680_FLIP_BIT : 0) | (h_flag > 0 ? OV2680_MIRROR_BIT :
......@@ -449,7 +381,7 @@ static int ov2680_init_registers(struct v4l2_subdev *sd)
struct i2c_client *client = v4l2_get_subdevdata(sd);
int ret;
ret = ov2680_write_reg(client, 1, OV2680_SW_RESET, 0x01);
ret = ov_write_reg8(client, OV2680_SW_RESET, 0x01);
ret |= ov2680_write_reg_array(client, ov2680_global_setting);
return ret;
......@@ -687,7 +619,7 @@ static int ov2680_set_fmt(struct v4l2_subdev *sd,
if (dev->exposure > vts - OV2680_INTEGRATION_TIME_MARGIN)
vts = dev->exposure + OV2680_INTEGRATION_TIME_MARGIN;
ret = ov2680_write_reg(client, 2, OV2680_TIMING_VTS_H, vts);
ret = ov_write_reg16(client, OV2680_TIMING_VTS_H, vts);
if (ret) {
dev_err(&client->dev, "ov2680 write vts err: %d\n", ret);
goto err;
......@@ -739,14 +671,12 @@ static int ov2680_detect(struct i2c_client *client)
if (!i2c_check_functionality(adapter, I2C_FUNC_I2C))
return -ENODEV;
ret = ov2680_read_reg(client, 1,
OV2680_SC_CMMN_CHIP_ID_H, &high);
ret = ov_read_reg8(client, OV2680_SC_CMMN_CHIP_ID_H, &high);
if (ret) {
dev_err(&client->dev, "sensor_id_high = 0x%x\n", high);
return -ENODEV;
}
ret = ov2680_read_reg(client, 1,
OV2680_SC_CMMN_CHIP_ID_L, &low);
ret = ov_read_reg8(client, OV2680_SC_CMMN_CHIP_ID_L, &low);
id = ((((u16)high) << 8) | (u16)low);
if (id != OV2680_ID) {
......@@ -754,8 +684,7 @@ static int ov2680_detect(struct i2c_client *client)
return -ENODEV;
}
ret = ov2680_read_reg(client, 1,
OV2680_SC_CMMN_SUB_ID, &high);
ret = ov_read_reg8(client, OV2680_SC_CMMN_SUB_ID, &high);
revision = (u8)high & 0x0f;
dev_info(&client->dev, "sensor_revision id = 0x%x, rev= %d\n",
......@@ -776,9 +705,8 @@ static int ov2680_s_stream(struct v4l2_subdev *sd, int enable)
else
dev_dbg(&client->dev, "ov2680_s_stream off\n");
ret = ov2680_write_reg(client, 1, OV2680_SW_STREAM,
enable ? OV2680_START_STREAMING :
OV2680_STOP_STREAMING);
ret = ov_write_reg8(client, OV2680_SW_STREAM,
enable ? OV2680_START_STREAMING : OV2680_STOP_STREAMING);
//otp valid at stream on state
//if(!dev->otp_data)
......
drivers/staging/media/atomisp/i2c/ov2680.h
View file @ f76855ef
......@@ -32,10 +32,6 @@
#include "../include/linux/atomisp_platform.h"
/* Defines for register writes and register array processing */
#define I2C_MSG_LENGTH 0x2
#define I2C_RETRY_COUNT 5
#define OV2680_FOCAL_LENGTH_NUM 334 /*3.34mm*/
#define OV2680_BIN_FACTOR_MAX 4
......
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