Re: [PATCH 1/2] [media] Add Rockchip RK1608 driver

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Hi leo,


2017-12-12 14:28 GMT+08:00 Leo Wen <leo.wen@xxxxxxxxxxxxxx>:
> Rk1608 is used as a PreISP to link on Soc, which mainly has two functions.
> One is to download the firmware of RK1608, and the other is to match the
> extra sensor such as camera and enable sensor by calling sensor's s_power.
>
> use below v4l2-ctl command to capture frames.
>
>     v4l2-ctl --verbose -d /dev/video1 --stream-mmap=2
>     --stream-to=/tmp/stream.out --stream-count=60 --stream-poll
>
> use below command to playback the video on your PC.
>
>     mplayer ./stream.out -loop 0 -demuxer rawvideo -rawvideo
>     w=640:h=480:size=$((640*480*3/2)):format=NV12
>
> Signed-off-by: Leo Wen <leo.wen@xxxxxxxxxxxxxx>
> ---
>  MAINTAINERS                |    6 +
>  drivers/media/spi/Makefile |    1 +
>  drivers/media/spi/rk1608.c | 1165 ++++++++++++++++++++++++++++++++++++++++++++
>  drivers/media/spi/rk1608.h |  366 ++++++++++++++
>  4 files changed, 1538 insertions(+)
>  create mode 100644 drivers/media/spi/rk1608.c
>  create mode 100644 drivers/media/spi/rk1608.h
>
> diff --git a/MAINTAINERS b/MAINTAINERS
> index 82ad0ea..48235d8 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -128,6 +128,12 @@ Maintainers List (try to look for most precise areas first)
>
>                 -----------------------------------
>
> +ROCKCHIP RK1608 DRIVER
> +M:     Leo Wen <leo.wen@xxxxxxxxxxxxxx>
> +S:     Maintained
> +F:     drivers/media/platform/spi/rk1608.c
> +F:     drivers/media/platform/spi/rk1608.h
> +
>  3C59X NETWORK DRIVER
>  M:     Steffen Klassert <klassert@xxxxxxxxxxxxxxxxxxxxxxxxx>
>  L:     netdev@xxxxxxxxxxxxxxx
> diff --git a/drivers/media/spi/Makefile b/drivers/media/spi/Makefile
> index ea64013..9d9d9ec 100644
> --- a/drivers/media/spi/Makefile
> +++ b/drivers/media/spi/Makefile
> @@ -1 +1,2 @@
>  obj-$(CONFIG_VIDEO_GS1662) += gs1662.o
> +obj-$(CONFIG_ROCKCHIP_RK1608) += rk1608.o
> diff --git a/drivers/media/spi/rk1608.c b/drivers/media/spi/rk1608.c
> new file mode 100644
> index 0000000..e646204
> --- /dev/null
> +++ b/drivers/media/spi/rk1608.c
> @@ -0,0 +1,1165 @@
> +/**
> + * Rockchip rk1608 driver
> + *
> + * Copyright (C) 2017 Rockchip Electronics Co., Ltd.
> + *
> + * This software is available to you under a choice of one of two
> + * licenses.  You may choose to be licensed under the terms of the GNU
> + * General Public License (GPL) Version 2, available from the file
> + * COPYING in the main directory of this source tree, or the
> + * OpenIB.org BSD license below:
> + *
> + *     Redistribution and use in source and binary forms, with or
> + *     without modification, are permitted provided that the following
> + *     conditions are met:
> + *
> + *      - Redistributions of source code must retain the above
> + *        copyright notice, this list of conditions and the following
> + *        disclaimer.
> + *
> + *      - Redistributions in binary form must reproduce the above
> + *        copyright notice, this list of conditions and the following
> + *        disclaimer in the documentation and/or other materials
> + *        provided with the distribution.
> + *
> + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
> + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
> + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
> + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
> + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
> + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
> + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
> + * SOFTWARE.
> + */
> +#include <linux/delay.h>
> +#include <linux/firmware.h>
> +#include <linux/interrupt.h>
> +#include <linux/of_platform.h>
> +#include <linux/of_gpio.h>
> +#include <media/v4l2-ctrls.h>
> +#include <media/v4l2-subdev.h>
> +#include <media/v4l2-device.h>
> +#include <media/v4l2-fwnode.h>
> +#include <media/v4l2-image-sizes.h>
> +#include <media/v4l2-mediabus.h>
> +#include <media/v4l2-of.h>
> +#include "rk1608.h"
> +
> +/**
> + * Rk1608 is used as the Pre-ISP to link on Soc, which mainly has two
> + * functions. One is to download the firmware of RK1608, and the other
> + * is to match the extra sensor such as camera and enable sensor by
> + * calling sensor's s_power.
> + *     |-----------------------|
> + *     |     Sensor Camera     |
> + *     |-----------------------|
> + *     |-----------||----------|
> + *     |-----------||----------|
> + *     |-----------\/----------|
> + *     |     Pre-ISP RK1608    |
> + *     |-----------------------|
> + *     |-----------||----------|
> + *     |-----------||----------|
> + *     |-----------\/----------|
> + *     |      Rockchip Soc     |
> + *     |-----------------------|
> + * Data Transfer As shown above. In RK1608, the data received from the
> + * extra sensor,and it is passed to the Soc through ISP.
> + */
> +struct rk1608_state {
> +       struct v4l2_subdev      sd;
> +       struct v4l2_subdev      *sensor_sd;
> +       struct device           *dev;
> +       struct spi_device       *spi;
> +       struct media_pad        pad;
> +       struct clk                      *mclk;
> +       struct mutex            lock;           /* protect resource */
> +       struct mutex            sensor_lock;    /* protect sensor */
> +       struct mutex            send_msg_lock;  /* protect msg */
> +       int power_count;
> +       int reset_gpio;
> +       int reset_active;
> +       int irq_gpio;
> +       int irq;
> +       int sleepst_gpio;
> +       int sleepst_irq;
> +       int wakeup_gpio;
> +       int wakeup_active;
> +       int powerdown_gpio;
> +       int powerdown_active;
> +       int msg_num;
> +       u32 sensor_cnt;
> +       u32 sensor_nums;
> +       u32 max_speed_hz;
> +       u32 min_speed_hz;
> +       atomic_t                        msg_done[8];
> +       wait_queue_head_t       msg_wait;
> +       struct v4l2_ctrl        *link_freq;
> +       struct v4l2_ctrl_handler ctrl_handler;
> +};
> +
> +static const s64 link_freq_menu_items[] = {
> +       1000000000
> +};
> +
> +static inline struct rk1608_state *to_state(struct v4l2_subdev *sd)
> +{
> +       return container_of(sd, struct rk1608_state, sd);
> +}
> +
> +/**
> + * rk1608_operation_query - RK1608 last operation state query
> + *
> + * @spi: device from which data will be read
> + * @state: last operation state [out]
> + * Context: can sleep
> + *
> + * It returns zero on success, else a negative error code.
> + */
> +int rk1608_operation_query(struct spi_device *spi, s32 *state)
> +{
> +       s32 query_cmd = RK1608_CMD_QUERY;
> +       struct spi_transfer query_cmd_packet = {
> +               .tx_buf = &query_cmd,
> +               .len    = sizeof(query_cmd),
> +       };
> +       struct spi_transfer state_packet = {
> +               .rx_buf = state,
> +               .len    = sizeof(*state),
> +       };
> +       struct spi_message  m;
> +
> +       spi_message_init(&m);
> +       spi_message_add_tail(&query_cmd_packet, &m);
> +       spi_message_add_tail(&state_packet, &m);
> +       spi_sync(spi, &m);
> +
> +       return ((*state & RK1608_STATE_ID_MASK) == RK1608_STATE_ID) ? 0 : -1;
> +}
> +
> +int rk1608_write(struct spi_device *spi,
> +                s32 addr, const s32 *data, size_t data_len)
> +{
> +       s32 write_cmd = RK1608_CMD_WRITE;
> +       struct spi_transfer write_cmd_packet = {
> +               .tx_buf = &write_cmd,
> +               .len    = sizeof(write_cmd),
> +       };
> +       struct spi_transfer addr_packet = {
> +               .tx_buf = &addr,
> +               .len    = sizeof(addr),
> +       };
> +       struct spi_transfer data_packet = {
> +               .tx_buf = data,
> +               .len    = data_len,
> +       };
> +       struct spi_message  m;
> +
> +       spi_message_init(&m);
> +       spi_message_add_tail(&write_cmd_packet, &m);
> +       spi_message_add_tail(&addr_packet, &m);
> +       spi_message_add_tail(&data_packet, &m);
> +       return spi_sync(spi, &m);
> +}
> +
> +/**
> + * rk1608_safe_write - RK1608 synchronous write with state check
> + *
> + * @spi: spi device
> + * @addr: resource address
> + * @data: data buffer
> + * @data_len: data buffer size, in bytes
> + * Context: can sleep
> + *
> + * It returns zero on success, else operation state code.
> + */
> +int rk1608_safe_write(struct spi_device *spi,
> +                     s32 addr, const s32 *data, size_t data_len)
> +{
> +       int ret = 0;
> +       s32 state, retry = 0;
> +
> +       while (data_len > 0) {
> +               size_t slen = MIN(data_len, RK1608_MAX_OP_BYTES);
> +
> +               do {
> +                       rk1608_write(spi, addr, data, data_len);
> +                       if (rk1608_operation_query(spi, &state) != 0)
> +                               return -1;
> +                       if ((state & RK1608_STATE_MASK) == 0)
> +                               break;
> +
> +                       udelay(RK1608_OP_TRY_DELAY);
> +               } while (retry++ != RK1608_OP_TRY_MAX);
> +
> +               data_len = data_len - slen;
> +               data = (s32 *)((s8 *)data + slen);
> +               addr += slen;
> +       }
> +       return ret;
> +}
> +
> +void rk1608_hw_init(struct spi_device *spi)
> +{
> +       s32 write_data = SPI0_PLL_SEL_APLL;
> +
> +       /* modify rk1608 spi slave clk to 300M */
> +       rk1608_safe_write(spi, CRUPMU_CLKSEL14_CON, &write_data, 4);
> +
> +       /* modify rk1608 spi io driver strength to 8mA */
> +       write_data = BIT7_6_SEL_8MA;
> +       rk1608_safe_write(spi, PMUGRF_GPIO1A_E, &write_data, 4);
> +       write_data = BIT1_0_SEL_8MA;
> +       rk1608_safe_write(spi, PMUGRF_GPIO1B_E, &write_data, 4);
> +}
> +
> +/**
> + * rk1608_read - RK1608 synchronous read
> + *
> + * @spi: spi device
> + * @addr: resource address
> + * @data: data buffer [out]
> + * @data_len: data buffer size, in bytes
> + * Context: can sleep
> + *
> + * It returns zero on success, else a negative error code.
> + */
> +int rk1608_read(struct spi_device *spi,
> +               s32 addr, s32 *data, size_t data_len)
> +{
> +       s32 real_len = MIN(data_len, RK1608_MAX_OP_BYTES);
> +       s32 read_cmd = RK1608_CMD_READ | (real_len << 14 &
> +                                          RK1608_STATE_ID_MASK);
> +       s32 read_begin_cmd = RK1608_CMD_READ_BEGIN;
> +       s32 dummy = 0;
> +       struct spi_transfer read_cmd_packet = {
> +               .tx_buf = &read_cmd,
> +               .len    = sizeof(read_cmd),
> +       };
> +       struct spi_transfer addr_packet = {
> +               .tx_buf = &addr,
> +               .len    = sizeof(addr),
> +       };
> +       struct spi_transfer read_dummy_packet = {
> +               .tx_buf = &dummy,
> +               .len    = sizeof(dummy),
> +       };
> +       struct spi_transfer read_begin_cmd_packet = {
> +               .tx_buf = &read_begin_cmd,
> +               .len    = sizeof(read_begin_cmd),
> +       };
> +       struct spi_transfer data_packet = {
> +               .rx_buf = data,
> +               .len    = data_len,
> +       };
> +       struct spi_message  m;
> +
> +       spi_message_init(&m);
> +       spi_message_add_tail(&read_cmd_packet, &m);
> +       spi_message_add_tail(&addr_packet, &m);
> +       spi_message_add_tail(&read_dummy_packet, &m);
> +       spi_message_add_tail(&read_begin_cmd_packet, &m);
> +       spi_message_add_tail(&data_packet, &m);
> +       return spi_sync(spi, &m);
> +}
> +
> +/**
> + * rk1608_safe_read - RK1608 synchronous read with state check
> + *
> + * @spi: spi device
> + * @addr: resource address
> + * @data: data buffer [out]
> + * @data_len: data buffer size, in bytes
> + * Context: can sleep
> + *
> + * It returns zero on success, else operation state code.
> + */
> +int rk1608_safe_read(struct spi_device *spi,
> +                    s32 addr, s32 *data, size_t data_len)
> +{
> +       s32 state = 0;
> +       s32 retry = 0;
> +
> +       do {
> +               rk1608_read(spi, addr, data, data_len);
> +               if (rk1608_operation_query(spi, &state) != 0)
> +                       return -1;
> +               if ((state & RK1608_STATE_MASK) == 0)
> +                       break;
> +               udelay(RK1608_OP_TRY_DELAY);
> +       } while (retry++ != RK1608_OP_TRY_MAX);
> +
> +       return (state & RK1608_STATE_MASK);
> +}
> +
> +static int rk1608_read_wait(struct spi_device *spi,
> +                           const struct rk1608_section *sec)
> +{
> +       s32 value = 0;
> +       int retry = 0;
> +       int ret = 0;
> +
> +       do {
> +               ret = rk1608_safe_read(spi, sec->wait_addr, &value, 4);
> +               if (!ret && value == sec->wait_value)
> +                       break;
> +
> +               if (retry++ == sec->timeout) {
> +                       ret = -1;
> +                       dev_err(&spi->dev, "read 0x%x is %x != %x timeout\n",
> +                               sec->wait_addr, value, sec->wait_value);
> +                       break;
> +               }
> +               mdelay(sec->wait_time);
> +       } while (1);
> +
> +       return ret;
> +}
> +
> +static int rk1608_boot_request(struct spi_device *spi,
> +                              const struct rk1608_section *sec)
> +{
> +       struct rk1608_boot_req boot_req;
> +       int retry = 0;
> +       int ret = 0;
> +
> +       /*send boot request to rk1608 for ddr init*/
> +       boot_req.flag = sec->flag;
> +       boot_req.load_addr = sec->load_addr;
> +       boot_req.boot_len = sec->size;
> +       boot_req.status = 1;
> +       boot_req.cmd = 2;
> +
> +       ret = rk1608_safe_write(spi, BOOT_REQUEST_ADDR,
> +                               (s32 *)&boot_req, sizeof(boot_req));
> +       if (ret)
> +               return ret;
> +
> +       if (sec->flag & BOOT_FLAG_READ_WAIT) {
> +       /*waitting for rk1608 init ddr done*/
> +               do {
> +                       ret = rk1608_safe_read(spi, BOOT_REQUEST_ADDR,
> +                                              (s32 *)&boot_req,
> +                                              sizeof(boot_req));
> +
> +                       if (!ret && boot_req.status == 0)
> +                               break;
> +
> +                       if (retry++ == sec->timeout) {
> +                               ret = -1;
> +                               dev_err(&spi->dev, "boot_request timeout\n");
> +                               break;
> +                       }
> +                       mdelay(sec->wait_time);
> +               } while (1);
> +       }
> +
> +       return ret;
> +}
> +
> +static int rk1608_download_section(struct spi_device *spi, const u8 *data,
> +                                  const struct rk1608_section *sec)
> +{
> +       int ret = 0;
> +
> +       dev_info(&spi->dev, "offset:%x,size:%x,addr:%x,wait_time:%x",
> +                sec->offset, sec->size, sec->load_addr, sec->wait_time);
> +       dev_info(&spi->dev, "timeout:%x,crc:%x,flag:%x,type:%x",
> +                sec->timeout, sec->crc_16, sec->flag, sec->type);
> +
> +       if (sec->size > 0) {
> +               ret = rk1608_safe_write(spi, sec->load_addr,
> +                                       (s32 *)(data + sec->offset),
> +                                       sec->size);
> +               if (ret) {
> +                       dev_err(&spi->dev, "rk1608_safe_write err =%d\n", ret);
> +                       return ret;
> +               }
> +       }
> +
> +       if (sec->flag & BOOT_FLAG_BOOT_REQUEST)
> +               ret = rk1608_boot_request(spi, sec);
> +       else if (sec->flag & BOOT_FLAG_READ_WAIT)
> +               ret = rk1608_read_wait(spi, sec);
> +
> +       return ret;
> +}
> +
> +/**
> + * rk1608_download_fw: - rk1608 firmware download through spi
> + *
> + * @spi: spi device
> + * @fw_name: name of firmware file, NULL for default firmware name
> + * Context: can sleep
> + *
> + * It returns zero on success, else a negative error code.
> + **/
> +int rk1608_download_fw(struct spi_device *spi, const char *fw_name)
> +{
> +       const struct rk1608_header *head;
> +       const struct firmware *fw;
> +       int i = 0;
> +       int ret = 0;
> +
> +       if (!fw_name)
> +               fw_name = RK1608_FW_NAME;
> +
> +       dev_info(&spi->dev, "before request firmware");
> +       ret = request_firmware(&fw, fw_name, &spi->dev);
> +       if (ret) {
> +               dev_err(&spi->dev, "request firmware %s failed!", fw_name);
> +               return ret;
> +       }
> +
> +       head = (const struct rk1608_header *)fw->data;
> +
> +       dev_info(&spi->dev, "request firmware %s (version:%s) success!",
> +                fw_name, head->version);
> +
> +       for (i = 0; i < head->section_count; i++) {
> +               ret = rk1608_download_section(spi, fw->data,
> +                                             &head->sections[i]);
> +               if (ret)
> +                       break;
> +       }
> +
> +       release_firmware(fw);
> +       return ret;
> +}
> +
> +int rk1608_lsb_w32(struct spi_device *spi, s32 addr, s32 data)
> +{
> +       s32 write_cmd = RK1608_CMD_WRITE;
> +       struct spi_transfer write_cmd_packet = {
> +               .tx_buf = &write_cmd,
> +               .len    = sizeof(write_cmd),
> +       };
> +       struct spi_transfer addr_packet = {
> +               .tx_buf = &addr,
> +               .len    = sizeof(addr),
> +       };
> +       struct spi_transfer data_packet = {
> +               .tx_buf = &data,
> +               .len    = sizeof(data),
> +       };
> +       struct spi_message  m;
> +
> +       write_cmd = MSB2LSB32(write_cmd);
> +       addr = MSB2LSB32(addr);
> +       data = MSB2LSB32(data);
> +       spi_message_init(&m);
> +       spi_message_add_tail(&write_cmd_packet, &m);
> +       spi_message_add_tail(&addr_packet, &m);
> +       spi_message_add_tail(&data_packet, &m);
> +       return spi_sync(spi, &m);
> +}
> +
> +void rk1608_cs_set_value(struct rk1608_state *pdata, int value)
> +{
> +       s8 null_cmd = 0;
> +       struct spi_transfer null_cmd_packet = {
> +               .tx_buf = &null_cmd,
> +               .len    = sizeof(null_cmd),
> +               .cs_change = !value,
> +       };
> +       struct spi_message  m;
> +
> +       spi_message_init(&m);
> +       spi_message_add_tail(&null_cmd_packet, &m);
> +       spi_sync(pdata->spi, &m);
> +}
> +
> +void rk1608_set_spi_speed(struct rk1608_state *pdata, u32 hz)
> +{
> +       pdata->spi->max_speed_hz = hz;
> +}
> +
> +static int rk1608_sensor_power(struct v4l2_subdev *sd, int on)
> +{
> +       int ret = 0;
> +       struct rk1608_state *pdata = to_state(sd);
> +       struct spi_device *spi = pdata->spi;
> +
> +       mutex_lock(&pdata->lock);
> +       /*start Sensor power on/off*/
> +       if (pdata->sensor_sd)
> +               pdata->sensor_sd->ops->core->s_power(pdata->sensor_sd, on);
> +       if (on && !pdata->power_count)  {
> +               clk_prepare_enable(pdata->mclk);
> +               clk_set_rate(pdata->mclk, RK1608_MCLK_RATE);
> +               /*request rk1608 enter slave mode*/
> +               rk1608_cs_set_value(pdata, 0);
> +               if (pdata->powerdown_gpio > 0) {
> +                       gpio_set_value(pdata->powerdown_gpio,
> +                                      pdata->powerdown_active);
> +               }
> +               if (pdata->wakeup_gpio > 0) {
> +                       gpio_set_value(pdata->wakeup_gpio,
> +                                      pdata->wakeup_active);
> +               }
> +               mdelay(3);
> +               if (pdata->reset_gpio > 0)
> +                       gpio_set_value(pdata->reset_gpio, pdata->reset_active);
> +               mdelay(5);
> +               rk1608_cs_set_value(pdata, 1);
> +               rk1608_set_spi_speed(pdata, pdata->min_speed_hz);
> +               rk1608_lsb_w32(spi, SPI_ENR, 0);
> +               rk1608_lsb_w32(spi, SPI_CTRL0,
> +                              OPM_SLAVE_MODE | RSD_SEL_2CYC | DFS_SEL_16BIT);
> +               rk1608_hw_init(pdata->spi);
> +               rk1608_set_spi_speed(pdata, pdata->max_speed_hz);
> +               /*download system firmware*/
> +               ret = rk1608_download_fw(pdata->spi, NULL);
> +               if (ret)
> +                       dev_err(pdata->dev, "Download firmware failed!");
> +               else
> +                       dev_info(pdata->dev, "Download firmware success!");
> +               enable_irq(pdata->irq);
> +               if (pdata->sleepst_irq > 0)
> +                       enable_irq(pdata->sleepst_irq);
> +
> +       } else if (!on && pdata->power_count == 1) {
> +               disable_irq(pdata->irq);
> +               if (pdata->sleepst_irq > 0)
> +                       disable_irq(pdata->sleepst_irq);
> +               if (pdata->powerdown_gpio > 0)
> +                       gpio_set_value(pdata->powerdown_gpio,
> +                                      !pdata->powerdown_active);
> +
> +               if (pdata->wakeup_gpio > 0)
> +                       gpio_set_value(pdata->wakeup_gpio,
> +                                      !pdata->wakeup_active);
> +
> +               if (pdata->reset_gpio > 0)
> +                       gpio_set_value(pdata->reset_gpio, !pdata->reset_active);
> +
> +               rk1608_cs_set_value(pdata, 0);
> +               clk_disable_unprepare(pdata->mclk);
> +       }
> +       /* Update the power count. */
> +       pdata->power_count += on ? 1 : -1;
> +       WARN_ON(pdata->power_count < 0);
> +       mutex_unlock(&pdata->lock);
> +
> +       return ret;
> +}
> +
> +static int rk1608_stream_on(struct rk1608_state *pdata)
> +{
> +       int  cnt = 0;
> +
> +       /*Waiting for the sensor to be ready*/
> +       while (pdata->sensor_cnt < pdata->sensor_nums) {
> +               /* TIMEOUT 10s break*/
> +               if (cnt++ > SENSOR_TIMEOUT) {
> +                       dev_err(pdata->dev, "Sensor%d is ready to timeout!",
> +                               pdata->sensor_cnt);
> +                       break;
> +               }
> +       mdelay(10);
> +       }
> +
> +       if (pdata->sensor_nums) {
> +               if (pdata->sensor_cnt == pdata->sensor_nums)
> +                       dev_info(pdata->dev, "Sensor(num %d) is ready!",
> +                                pdata->sensor_cnt);
> +       } else {
> +               dev_warn(pdata->dev, "No sensor is found!");
> +       }
> +
> +       return 0;
> +}
> +
> +static int rk1608_stream_off(struct rk1608_state *pdata)
> +{
> +       mutex_lock(&pdata->sensor_lock);
> +       pdata->sensor_cnt = 0;
> +       mutex_unlock(&pdata->sensor_lock);
> +       return 0;
> +}
> +
> +static int rk1608_s_stream(struct v4l2_subdev *sd, int enable)
> +{
> +       struct rk1608_state *pdata = to_state(sd);
> +
> +       if (enable)
> +               return rk1608_stream_on(pdata);
> +       else
> +               return rk1608_stream_off(pdata);
> +}
> +
> +static int rk1608_enum_mbus_code(struct v4l2_subdev *sd,
> +                                struct v4l2_subdev_pad_config *cfg,
> +                                struct v4l2_subdev_mbus_code_enum *code)
> +{
> +       if (code->index > 0)
> +               return -EINVAL;
> +
> +       code->code = MEDIA_BUS_FMT_SGRBG8_1X8;
> +
> +       return 0;
> +}
> +
> +static int rk1608_get_fmt(struct v4l2_subdev *sd,
> +                         struct v4l2_subdev_pad_config *cfg,
> +                         struct v4l2_subdev_format *fmt)
> +{
> +       struct v4l2_mbus_framefmt *mf = &fmt->format;
> +
> +       mf->code = MEDIA_BUS_FMT_SGRBG8_1X8;
> +       mf->width = RK1608_WINDOW_WIDTH_DEF;
> +       mf->height = RK1608_WINDOW_HEIGHT_DEF;
> +       mf->field = V4L2_FIELD_NONE;
> +       mf->colorspace = V4L2_COLORSPACE_SRGB;
> +
> +       return 0;
> +}
> +
> +static const struct v4l2_subdev_internal_ops rk1608_subdev_internal_ops = {
> +       .open   = NULL,
> +};
> +
> +static const struct v4l2_subdev_video_ops rk1608_subdev_video_ops = {
> +       .s_stream       = rk1608_s_stream,
> +};
> +
> +static const struct v4l2_subdev_pad_ops rk1608_subdev_pad_ops = {
> +       .enum_mbus_code = rk1608_enum_mbus_code,
> +       .get_fmt        = rk1608_get_fmt,
> +};
> +
> +static const struct v4l2_subdev_core_ops rk1608_core_ops = {
> +       .s_power        = rk1608_sensor_power,
> +};
> +
> +static const struct v4l2_subdev_ops rk1608_subdev_ops = {
> +       .core   = &rk1608_core_ops,
> +       .video  = &rk1608_subdev_video_ops,
> +       .pad    = &rk1608_subdev_pad_ops,
> +};
> +
> +/**
> + * rk1608_msq_read_head - read rk1608 msg queue head
> + *
> + * @spi: spi device
> + * @addr: msg queue head addr
> + * @m: msg queue pointer
> + *
> + * It returns zero on success, else a negative error code.
> + */
> +int rk1608_msq_read_head(struct spi_device *spi,
> +                        u32 addr, struct rk1608_msg_queue *q)
> +{
> +       int err = 0;
> +       s32 reg;
> +
> +       err = rk1608_safe_read(spi, RK1608_PMU_SYS_REG0, &reg, 4);
> +
> +       if (err || ((reg & RK1608_MSG_QUEUE_OK_MASK) !=
> +                        RK1608_MSG_QUEUE_OK_TAG))
> +               return -1;
> +
> +       err = rk1608_safe_read(spi, addr, (s32 *)q, sizeof(*q));
> +
> +       return err;
> +}
> +
> +/**
> + * rk1608_msq_recv_msg - receive a msg from RK1608 -> AP msg queue
> + *
> + * @q: msg queue
> + * @m: a msg pointer buf [out]
> + *
> + * need call rk1608_msq_recv_msg_free to free msg after msg use done
> + *
> + * It returns zero on success, else a negative error code.
> + */
> +int rk1608_msq_recv_msg(struct spi_device *spi, struct msg **m)
> +{
> +       struct rk1608_msg_queue queue;
> +       struct rk1608_msg_queue *q = &queue;
> +       u32 size = 0, msg_size = 0;
> +       u32 recv_addr = 0;
> +       u32 next_recv_addr = 0;
> +       int err = 0;
> +
> +       *m = NULL;
> +       err = rk1608_msq_read_head(spi, RK1608_S_MSG_QUEUE_ADDR, q);
> +       if (err)
> +               return err;
> +
> +       if (q->cur_send == q->cur_recv)
> +               return -1;
> +       /*skip to head when size is 0*/
> +       err = rk1608_safe_read(spi, (s32)q->cur_recv, (s32 *)&size, 4);
> +       if (err)
> +               return err;
> +       if (size == 0) {
> +               err = rk1608_safe_read(spi, (s32)q->buf_head, (s32 *)&size, 4);
> +               if (err)
> +                       return err;
> +
> +               msg_size = size * sizeof(u32);
> +               recv_addr = q->buf_head;
> +               next_recv_addr = q->buf_head + msg_size;
> +       } else {
> +               msg_size = size * sizeof(u32);
> +               recv_addr = q->cur_recv;
> +               next_recv_addr = q->cur_recv + msg_size;
> +               if (next_recv_addr == q->buf_tail)
> +                       next_recv_addr = q->buf_head;
> +       }
> +
> +       if (msg_size > (q->buf_tail - q->buf_head))
> +               return -2;
> +
> +       *m = kmalloc(msg_size, GFP_KERNEL);
> +       err = rk1608_safe_read(spi, recv_addr, (s32 *)*m, msg_size);
> +       if (err == 0) {
> +               err = rk1608_safe_write(spi, RK1608_S_MSG_QUEUE_ADDR +
> +                                      (u8 *)&q->cur_recv - (u8 *)q,
> +                                      &next_recv_addr, 4);
> +       }
> +       if (err)
> +               kfree(*m);
> +
> +       return err;
> +}
> +
> +static void print_rk1608_log(struct rk1608_state *pdata,
> +                            struct msg_rk1608_log_t *log)
> +{
> +       char *str = (char *)(log);
> +
> +       str[log->size * sizeof(s32) - 1] = 0;
> +       str += sizeof(struct msg_rk1608_log_t);
> +       dev_info(pdata->dev, "RK1608%d: %s", log->core_id, str);
> +}
> +
> +void int32_hexdump(const char *prefix, int32_t *data, int len)
> +{
> +       pr_err("%s\n", prefix);
> +       print_hex_dump(KERN_ERR, "offset ", DUMP_PREFIX_OFFSET,
> +                      16, 4, data, len, false);
> +       pr_err("\n");
> +}
> +
> +static void dispatch_received_msg(struct rk1608_state *pdata,
> +                                 struct msg *msg)
> +{
> +       #if DEBUG_DUMP_ALL_SEND_RECV_MSG == 1
> +       int32_hexdump("recv msg:", (s32 *)msg, msg->size * 4);
> +       #endif
> +
> +       if (msg->type == id_msg_set_stream_out_on_ret_t) {
> +               mutex_lock(&pdata->sensor_lock);
> +               pdata->sensor_cnt++;
> +               mutex_unlock(&pdata->sensor_lock);
> +       }
> +
> +       if (msg->type == id_msg_rk1608_log_t)
> +               print_rk1608_log(pdata, (struct msg_rk1608_log_t *)msg);
> +}
> +
> +static irqreturn_t rk1608_threaded_isr(int irq, void *dev_id)
> +{
> +       struct rk1608_state *pdata = dev_id;
> +       struct msg *msg;
> +
> +       WARN_ON(irq != pdata->irq);
> +       while (!rk1608_msq_recv_msg(pdata->spi, &msg) && NULL != msg) {
> +               dispatch_received_msg(pdata, msg);
> +               /* for kernel msg sync */
> +               if (pdata->msg_num != 0 && msg->sync) {
> +                       dev_info(pdata->dev, "rk1608 kernel sync\n");
> +                       mutex_lock(&pdata->send_msg_lock);
> +                       pdata->msg_num--;
> +                       atomic_set(&pdata->msg_done[pdata->msg_num], 1);
> +                       mutex_unlock(&pdata->send_msg_lock);
> +                       wake_up(&pdata->msg_wait);
> +               }
> +               kfree(msg);
> +       }
> +
> +       return IRQ_HANDLED;
> +}
> +
> +static irqreturn_t rk1608_sleep_isr(int irq, void *dev_id)
> +{
> +       struct rk1608_state *pdata = dev_id;
> +
> +       WARN_ON(irq != pdata->sleepst_irq);
> +       if (pdata->powerdown_gpio > 0)
> +               gpio_set_value(pdata->powerdown_gpio, !pdata->powerdown_active);
> +
> +       return IRQ_HANDLED;
> +}
> +
> +static int rk1608_parse_dt_property(struct rk1608_state *pdata)
> +{
> +       int ret = 0;
> +       int i;
> +       struct device *dev = pdata->dev;
> +       struct device_node *node = dev->of_node;
> +       enum of_gpio_flags flags;
> +
> +       if (!node)
> +               return 1;
> +
> +       ret = of_property_read_u32(node, "spi-max-frequency",
> +                                  &pdata->max_speed_hz);
> +       if (ret <= 0) {
> +               dev_warn(dev, "can not get spi-max-frequency!");
> +               pdata->max_speed_hz = RK1608_MCLK_RATE;
> +       }
> +
> +       ret = of_property_read_u32(node, "spi-min-frequency",
> +                                  &pdata->min_speed_hz);
> +       if (ret <= 0) {
> +               dev_warn(dev, "can not get spi-min-frequency!");
> +               pdata->min_speed_hz = pdata->max_speed_hz / 2;
> +       }
> +
> +       pdata->mclk = devm_clk_get(dev, "mclk");
> +       if (IS_ERR(pdata->mclk)) {
> +               dev_err(dev, "can not get mclk, error %ld\n",
> +                       PTR_ERR(pdata->mclk));
> +               pdata->mclk = NULL;
> +               return -1;
> +       }
> +
> +       ret = of_get_named_gpio_flags(node, "reset-gpio", 0, &flags);
> +       if (ret <= 0) {
> +               dev_warn(dev, "can not find reset-gpio, error %d\n", ret);
> +               return ret;
> +       }
> +       pdata->reset_gpio = ret;
> +       pdata->reset_active = 1;
> +       if (flags == OF_GPIO_ACTIVE_LOW)
> +               pdata->reset_active = 0;
> +
> +       if (pdata->reset_gpio > 0) {
> +               ret = devm_gpio_request(dev, pdata->reset_gpio, "rk1608-reset");
> +               if (ret) {
> +                       dev_err(dev, "gpio %d request error %d\n",
> +                               pdata->reset_gpio, ret);
> +                       return ret;
> +               }
> +
> +               ret = gpio_direction_output(pdata->reset_gpio,
> +                                           !pdata->reset_active);
> +               if (ret) {
> +                       dev_err(dev, "gpio %d direction output error %d\n",
> +                               pdata->reset_gpio, ret);
> +                       return ret;
> +               }
> +       }
> +
> +       ret = of_get_named_gpio_flags(node, "irq-gpio", 0, NULL);
> +       if (ret <= 0) {
> +               dev_warn(dev, "can not find irq-gpio, error %d\n", ret);
> +               return ret;
> +       }
> +
> +       pdata->irq_gpio = ret;
> +
> +       ret = devm_gpio_request(dev, pdata->irq_gpio, "rk1608-irq");
> +       if (ret) {
> +               dev_err(dev, "gpio %d request error %d\n", pdata->irq_gpio,
> +                       ret);
> +               return ret;
> +       }
> +
> +       ret = gpio_direction_input(pdata->irq_gpio);
> +       if (ret) {
> +               dev_err(dev, "gpio %d direction input error %d\n",
> +                       pdata->irq_gpio, ret);
> +               return ret;
> +       }
> +
> +       ret = gpio_to_irq(pdata->irq_gpio);
> +       if (ret < 0) {
> +               dev_err(dev, "Unable to get irq number for GPIO %d, error %d\n",
> +                       pdata->irq_gpio, ret);
> +               return ret;
> +       }
> +       pdata->irq = ret;
> +       ret = request_threaded_irq(pdata->irq, NULL, rk1608_threaded_isr,
> +                                  IRQF_TRIGGER_RISING | IRQF_ONESHOT,
> +                                  "rk1608-irq", pdata);
> +       if (ret) {
> +               dev_err(dev, "cannot request thread irq: %d\n", ret);
> +               return ret;
> +       }
> +
> +       disable_irq(pdata->irq);
> +
> +       ret = of_get_named_gpio_flags(node, "powerdown-gpio", 0, &flags);
> +       if (ret <= 0)
> +               dev_warn(dev, "can not find  powerdown-gpio, error %d\n", ret);
> +
> +       pdata->powerdown_gpio = ret;
> +       pdata->powerdown_active = 1;
> +       if (flags == OF_GPIO_ACTIVE_LOW)
> +               pdata->powerdown_active = 0;
> +
> +       if (pdata->powerdown_gpio > 0) {
> +               ret = devm_gpio_request(dev, pdata->powerdown_gpio,
> +                                       "rk1608-powerdown");
> +               if (ret) {
> +                       dev_err(dev, "gpio %d request error %d\n",
> +                               pdata->powerdown_gpio, ret);
> +                       return ret;
> +               }
> +
> +               ret = gpio_direction_output(pdata->powerdown_gpio,
> +                                           !pdata->powerdown_active);
> +               if (ret) {
> +                       dev_err(dev, "gpio %d direction output error %d\n",
> +                               pdata->powerdown_gpio, ret);
> +                       return ret;
> +               }
> +       }
> +
> +       pdata->sleepst_gpio = -1;
> +       pdata->sleepst_irq = -1;
> +       pdata->wakeup_gpio = -1;
> +
> +       ret = of_get_named_gpio_flags(node, "sleepst-gpio", 0, NULL);
> +       if (ret <= 0) {
> +               dev_warn(dev, "can not find property sleepst-gpio, error %d\n",
> +                        ret);
> +               return ret;
> +       }
> +
> +       pdata->sleepst_gpio = ret;
> +
> +       ret = devm_gpio_request(dev, pdata->sleepst_gpio, "rk1608-sleep-irq");
> +       if (ret) {
> +               dev_err(dev, "gpio %d request error %d\n",
> +                       pdata->sleepst_gpio, ret);
> +               return ret;
> +       }
> +
> +       ret = gpio_direction_input(pdata->sleepst_gpio);
> +       if (ret) {
> +               dev_err(dev, "gpio %d direction input error %d\n",
> +                       pdata->sleepst_gpio, ret);
> +               return ret;
> +       }
> +
> +       ret = gpio_to_irq(pdata->sleepst_gpio);
> +       if (ret < 0) {
> +               dev_err(dev, "Unable to get irq number for GPIO %d, error %d\n",
> +                       pdata->sleepst_gpio, ret);
> +               return ret;
> +       }
> +       pdata->sleepst_irq = ret;
> +       ret = request_any_context_irq(pdata->sleepst_irq,
> +                                     rk1608_sleep_isr,
> +                                     IRQF_TRIGGER_RISING,
> +                                     "rk1608-sleepst", pdata);
> +       disable_irq(pdata->sleepst_irq);
> +
> +       ret = of_get_named_gpio_flags(node, "wakeup-gpio", 0, &flags);
> +       if (ret <= 0)
> +               dev_warn(dev, "can not find wakeup-gpio error %d\n", ret);
> +
> +       pdata->wakeup_gpio = ret;
> +       pdata->wakeup_active = 1;
> +       if (flags == OF_GPIO_ACTIVE_LOW)
> +               pdata->wakeup_active = 0;
> +
> +       if (pdata->wakeup_gpio > 0) {
> +               ret = devm_gpio_request(dev, pdata->wakeup_gpio,
> +                                       "rk1608-wakeup");
> +               if (ret) {
> +                       dev_err(dev, "gpio %d request error %d\n",
> +                               pdata->wakeup_gpio, ret);
> +                       return ret;
> +               }
> +
> +               ret = gpio_direction_output(pdata->wakeup_gpio,
> +                                           !pdata->wakeup_active);
> +               if (ret) {
> +                       dev_err(dev, "gpio %d direction output error %d\n",
> +                               pdata->wakeup_gpio, ret);
> +                       return ret;
> +               }
> +       }
> +       pdata->msg_num = 0;
> +       init_waitqueue_head(&pdata->msg_wait);
> +       for (i = 0; i < 8; i++)
> +               atomic_set(&pdata->msg_done[i], 0);
> +
> +       return ret;
> +}
> +
> +static int get_remote_node_dev(struct rk1608_state *pdev)
> +{
> +       struct platform_device *sensor_pdev = NULL;
> +       struct device *dev = pdev->dev;
> +       struct device_node *parent = dev->of_node;
> +       struct device_node *node, *pre_node = NULL;
> +       struct device_node  *remote = NULL;
> +       int ret, sensor_nums = 0;
> +
> +       node = of_graph_get_next_endpoint(parent, pre_node);
> +       if (node) {
> +               of_node_put(pre_node);
> +               pre_node = node;
> +       } else {
> +               dev_err(dev, "fieled to get endpoint\n");
> +               return -EINVAL;
> +       }
> +       while ((node = of_graph_get_next_endpoint(parent, pre_node)) != NULL) {
> +               of_node_put(pre_node);
> +               pre_node = node;
> +               remote = of_graph_get_remote_port_parent(node);
> +               if (!remote) {
> +                       dev_err(dev, "%s: no valid device\n", __func__);
> +                       of_node_put(remote);
> +                       ret = -EINVAL;
> +               }
> +
> +               sensor_pdev = of_find_device_by_node(remote);
> +               of_node_put(remote);
> +
> +               if (!sensor_pdev) {
> +                       dev_err(dev, "fieled to get Sensor device\n");
> +                       ret = -EINVAL;
> +               } else {
> +                       pdev->sensor_sd = platform_get_drvdata(sensor_pdev);
> +                       if (pdev->sensor_sd)
> +                               sensor_nums++;
> +                       else
> +                               dev_err(dev, "fieled to get Sensor drvdata\n");
> +                       ret = 0;
> +               }
> +       }
> +       pdev->sensor_nums = sensor_nums;
> +       if (pdev->sensor_nums)
> +               dev_info(dev, "get Sensor (nums=%d) dev is OK!\n",
> +                        pdev->sensor_nums);
> +
> +       return ret;
> +}
> +
> +static int rk1608_probe(struct spi_device *spi)
> +{
> +       struct rk1608_state             *rk1608;
> +       struct v4l2_subdev              *sd;
> +       struct v4l2_ctrl_handler        *handler;
> +       int ret;
> +
> +       rk1608 = devm_kzalloc(&spi->dev, sizeof(*rk1608), GFP_KERNEL);
> +       if (!rk1608)
> +               return -ENOMEM;
> +       rk1608->dev = &spi->dev;
> +       rk1608->spi = spi;
> +       spi_set_drvdata(spi, rk1608);
> +       ret = rk1608_parse_dt_property(rk1608);
> +       if (ret) {
> +               dev_err(rk1608->dev, "rk1608 parse dt property err(%x)\n", ret);
> +               goto parse_err;
> +       }
> +       ret = get_remote_node_dev(rk1608);
> +       if (ret)
> +               dev_warn(rk1608->dev, "get remote node dev err(%x)\n", ret);
> +       rk1608->sensor_cnt = 0;
> +       mutex_init(&rk1608->sensor_lock);
> +       mutex_init(&rk1608->send_msg_lock);
> +       mutex_init(&rk1608->lock);
> +       sd = &rk1608->sd;
> +       v4l2_spi_subdev_init(sd, spi, &rk1608_subdev_ops);
> +
> +       handler = &rk1608->ctrl_handler;
> +       ret = v4l2_ctrl_handler_init(handler, 1);
> +       if (ret)
> +               goto handler_init_err;
> +
> +       rk1608->link_freq = v4l2_ctrl_new_int_menu(handler, NULL,
> +                                                  V4L2_CID_LINK_FREQ,
> +                                                  0, 0, link_freq_menu_items);
> +       if (rk1608->link_freq)
> +               rk1608->link_freq->flags |= V4L2_CTRL_FLAG_READ_ONLY;
> +
> +       if (handler->error)
> +               goto handler_err;
> +
> +       sd->ctrl_handler = handler;
> +       sd->internal_ops = &rk1608_subdev_internal_ops;
> +       sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
> +
> +       rk1608->pad.flags = MEDIA_PAD_FL_SOURCE;
> +       sd->entity.type = MEDIA_ENT_T_V4L2_SUBDEV_SENSOR;
> +
> +       ret = media_entity_init(&sd->entity, 1, &rk1608->pad, 0);
> +       if (ret < 0)
> +               goto handler_err;
> +
> +       ret = v4l2_async_register_subdev(sd);
> +       if (ret < 0)
> +               goto register_err;
> +       dev_info(rk1608->dev, "DSP rk1608 Driver probe is OK!\n");
> +
> +       return 0;
> +register_err:
> +       media_entity_cleanup(&sd->entity);
> +handler_err:
> +       v4l2_ctrl_handler_free(handler);
> +handler_init_err:
> +       v4l2_device_unregister_subdev(&rk1608->sd);
> +       mutex_destroy(&rk1608->lock);
> +       mutex_destroy(&rk1608->send_msg_lock);
> +       mutex_destroy(&rk1608->sensor_lock);
> +parse_err:
> +       kfree(rk1608);
> +       return ret;
> +}
> +
> +static int rk1608_remove(struct spi_device *spi)
> +{
> +       struct rk1608_state *rk1608 = spi_get_drvdata(spi);
> +
> +       v4l2_async_unregister_subdev(&rk1608->sd);
> +       media_entity_cleanup(&rk1608->sd.entity);
> +       v4l2_ctrl_handler_free(&rk1608->ctrl_handler);
> +       v4l2_device_unregister_subdev(&rk1608->sd);
> +       mutex_destroy(&rk1608->lock);
> +       mutex_destroy(&rk1608->send_msg_lock);
> +       mutex_destroy(&rk1608->sensor_lock);
> +       kfree(rk1608);
> +
> +       return 0;
> +}
> +
> +static const struct spi_device_id rk1608_id[] = {
> +       { "RK1608", 0 },
> +       { }
> +};
> +MODULE_DEVICE_TABLE(spi, rk1608_id);
> +
> +#if IS_ENABLED(CONFIG_OF)
> +static const struct of_device_id rk1608_of_match[] = {
> +       { .compatible = "rockchip,rk1608" },
> +       { /* sentinel */ },
> +};
> +MODULE_DEVICE_TABLE(of, rk1608_of_match);
> +#endif
> +
> +static struct spi_driver rk1608_driver = {
> +       .driver = {
> +               .of_match_table = of_match_ptr(rk1608_of_match),
> +               .name   = "RK1608",
> +       },
> +       .probe          = rk1608_probe,
> +       .remove         = rk1608_remove,
> +       .id_table       = rk1608_id,
> +};
> +
> +module_spi_driver(rk1608_driver);
> +
> +MODULE_AUTHOR("Rockchip Camera/ISP team");
> +MODULE_DESCRIPTION("A DSP driver for rk1608 chip");
> +MODULE_LICENSE("Dual BSD/GPL");
> diff --git a/drivers/media/spi/rk1608.h b/drivers/media/spi/rk1608.h
> new file mode 100644
> index 0000000..bf0c5ec
> --- /dev/null
> +++ b/drivers/media/spi/rk1608.h
> @@ -0,0 +1,366 @@
> +/**
> + * Rockchip rk1608 driver
> + *
> + * Copyright (C) 2017 Rockchip Electronics Co., Ltd.
> + *
> + * This software is available to you under a choice of one of two
> + * licenses.  You may choose to be licensed under the terms of the GNU
> + * General Public License (GPL) Version 2, available from the file
> + * COPYING in the main directory of this source tree, or the
> + * OpenIB.org BSD license below:
> + *
> + *     Redistribution and use in source and binary forms, with or
> + *     without modification, are permitted provided that the following
> + *     conditions are met:
> + *
> + *      - Redistributions of source code must retain the above
> + *        copyright notice, this list of conditions and the following
> + *        disclaimer.
> + *
> + *      - Redistributions in binary form must reproduce the above
> + *        copyright notice, this list of conditions and the following
> + *        disclaimer in the documentation and/or other materials
> + *        provided with the distribution.
> + *
> + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
> + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
> + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
> + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
> + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
> + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
> + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
> + * SOFTWARE.
> + */
> +#ifndef __RK1608_H__
> +#define __RK1608_H__
> +
> +#include <linux/types.h>
> +#include <linux/string.h>
> +#include <linux/spi/spi.h>
> +#include "linux/i2c.h"
> +
> +#define RK1608_OP_TRY_MAX                      3
> +#define RK1608_OP_TRY_DELAY                    10
> +#define RK1608_CMD_WRITE                       0x00000011
> +#define RK1608_CMD_WRITE_REG0          0X00010011
> +#define RK1608_CMD_WRITE_REG1          0X00020011
> +#define RK1608_CMD_READ                                0x00000077
> +#define RK1608_CMD_READ_BEGIN          0x000000aa
> +#define RK1608_CMD_QUERY                       0x000000ff
> +#define RK1608_CMD_QUERY_REG2          0x000001ff
> +#define RK1608_STATE_ID_MASK           (0xffff0000)
> +#define RK1608_STATE_ID                                (0X16080000)
> +#define RK1608_STATE_MASK                      (0x0000ffff)
> +
> +#define BOOT_REQUEST_ADDR                      0x18000010
> +#define RK1608_HEAD_ADDR                       0x60000000
> +#define RK1608_FW_NAME                         "rk1608.rkl"
> +#define RK1608_S_MSG_QUEUE_ADDR                0x60050010
> +#define RK1608_PMU_SYS_REG0                    0x120000f0
> +#define RK1608_MSG_QUEUE_OK_MASK       0xffff0001
> +#define RK1608_MSG_QUEUE_OK_TAG                0x16080001
> +#define RK1608_MAX_OP_BYTES                    60000
> +
> +#define RK1608_WINDOW_HEIGHT_DEF       480
> +#define RK1608_WINDOW_WIDTH_DEF                640
> +
> +#define BOOT_FLAG_CRC                          (0x01 << 0)
> +#define BOOT_FLAG_EXE                          (0x01 << 1)
> +#define BOOT_FLAG_LOAD_PMEM                    (0x01 << 2)
> +#define BOOT_FLAG_ACK                          (0x01 << 3)
> +#define BOOT_FLAG_READ_WAIT                    (0x01 << 4)
> +#define BOOT_FLAG_BOOT_REQUEST         (0x01 << 5)
> +
> +#define DEBUG_DUMP_ALL_SEND_RECV_MSG   0
> +#define RK1608_MCLK_RATE                       (24 * 1000 * 1000ul)
> +#define SENSOR_TIMEOUT                         1000
> +#define GRF_BASE_ADDR                          0xff770000
> +#define GRF_GPIO2B_IOMUX                       0x0014
> +#define GRF_IO_VSEL                                    0x0380
> +#define        OPM_SLAVE_MODE                          0X100000
> +#define        RSD_SEL_2CYC                            0X008000
> +#define        DFS_SEL_16BIT                           0X000002
> +#define SPI_CTRL0                                      0x11060000
> +#define SPI_ENR                                                0x11060008
> +#define CRUPMU_CLKSEL14_CON                    0x12008098
> +#define PMUGRF_GPIO1A_E                                0x12030040
> +#define PMUGRF_GPIO1B_E                                0x12030044
> +#define BIT7_6_SEL_8MA                         0xf000a000
> +#define BIT1_0_SEL_8MA                         0x000f000a
> +#define SPI0_PLL_SEL_APLL                      0xff004000
> +#define INVALID_ID                                     -1
> +#define RK1608_MAX_SEC_NUM                     10
> +
> +#ifndef MIN
> +#define MIN(a, b) ((a) < (b) ? (a) : (b))
> +#endif
> +
> +#ifndef MSB2LSB32
> +#define MSB2LSB32(x)   ((((u32)x & 0x80808080) >> 7) | \
> +                       (((u32)x & 0x40404040) >> 5) | \
> +                       (((u32)x & 0x20202020) >> 3) | \
> +                       (((u32)x & 0x10101010) >> 1) | \
> +                       (((u32)x & 0x08080808) << 1) | \
> +                       (((u32)x & 0x04040404) << 3) | \
> +                       (((u32)x & 0x02020202) << 5) | \
> +                       (((u32)x & 0x01010101) << 7))
> +#endif
> +
> +struct rk1608_section {
> +       union {
> +               u32     offset;
> +               u32     wait_value;
> +       };
> +       u32 size;
> +       union {
> +               u32     load_addr;
> +               u32     wait_addr;
> +       };
> +       u16     wait_time;
> +       u16     timeout;
> +       u16     crc_16;
> +       u8      flag;
> +       u8      type;
> +};
> +
> +struct rk1608_header {
> +       char version[32];
> +       u32 header_size;
> +       u32 section_count;
> +       struct rk1608_section sections[RK1608_MAX_SEC_NUM];
> +};
> +
> +struct rk1608_boot_req {
> +       u32 flag;
> +       u32 load_addr;
> +       u32 boot_len;
> +       u8 status;
> +       u8 dummy[2];
> +       u8 cmd;
> +};
> +
> +struct rk1608_msg_queue {
> +       u32 buf_head; /* msg buffer head */
> +       u32 buf_tail; /* msg buffer tail */
> +       u32 cur_send; /* current msg send postition */
> +       u32 cur_recv; /* current msg receive position */
> +};
> +
> +struct msg {
> +       u32 size; /* unit 4 bytes */
> +       u16 type; /* msg identification */
> +       s8  camera_id;
> +       s8  sync;
> +};
> +
> +enum {
> +       /** AP -> RK1608
> +        *   1 msg of sensor
> +        */
> +       id_msg_init_sensor_t =                  0x0001,
> +       id_msg_set_input_size_t,
> +       id_msg_set_output_size_t,
> +       id_msg_set_stream_in_on_t,
> +       id_msg_set_stream_in_off_t,
> +       id_msg_set_stream_out_on_t,
> +       id_msg_set_stream_out_off_t,
> +
> +       /** AP -> RK1608
> +        *   2 msg of take picture
> +        */
> +       id_msg_take_picture_t =                 0x0021,
> +       id_msg_take_picture_done_t,
> +
> +       /** AP -> RK1608
> +        *   3 msg of realtime parameter
> +        */
> +       id_msg_rt_args_t =                              0x0031,
> +
> +       /** AP -> RK1608
> +        *   4 msg of power manager
> +        */
> +       id_msg_set_sys_mode_bypass_t =  0x0200,
> +       id_msg_set_sys_mode_standby_t,
> +       id_msg_set_sys_mode_idle_enable_t,
> +       id_msg_set_sys_mode_idle_disable_t,
> +       id_msg_set_sys_mode_slave_rk1608_on_t,
> +       id_msg_set_sys_mode_slave_rk1608_off_t,
> +
> +       /** AP -> RK1608
> +        *   5 msg of debug config
> +        */
> +       id_msg_set_log_level_t =                0x0250,
> +
> +       /** RK1608 -> AP
> +        *   6 response of sensor msg
> +        */
> +       id_msg_init_sensor_ret_t =              0x0301,
> +       id_msg_set_input_size_ret_t,
> +       id_msg_set_output_size_ret_t,
> +       id_msg_set_stream_in_on_ret_t,
> +       id_msg_set_stream_in_off_ret_t,
> +       id_msg_set_stream_out_on_ret_t,
> +       id_msg_set_stream_out_off_ret_t,
> +
> +       /** RK1608 -> AP
> +        *   7 response of take picture msg
> +        */
> +       id_msg_take_picture_ret_t =             0x0320,
> +       id_msg_take_picture_done_ret_t,
> +
> +       /** RK1608 -> AP
> +        *   8 response of realtime parameter msg
> +        */
> +       id_msg_rt_args_ret_t =                  0x0330,
> +
> +       /*rk1608 -> ap*/
> +       id_msg_do_i2c_t =                               0x0390,
> +       /*ap -> rk1608*/
> +       id_msg_do_i2c_ret_t,
> +
> +       /** RK1608 -> AP
> +        *   9 msg of print log
> +        */
> +       id_msg_rk1608_log_t =                   0x0400,
> +
> +       /* dsi2csi dump */
> +       id_msg_dsi2sci_rgb_dump_t =             0x6000,
> +       id_msg_dsi2sci_nv12_dump_t =    0x6001,
> +
> +       /** RK1608 -> AP
> +        *      10  msg of xfile
> +        */
> +       id_msg_xfile_import_t =         0x8000 + 0x0600,
> +       id_msg_xfile_export_t,
> +       id_msg_xfile_mkdir_t
> +};
> +
> +struct msg_rk1608_log_t {
> +       u32     size;
> +       u16     type;
> +       s8      core_id;
> +       s8      log_level;
> +};
> +
> +/**
> + * rk1608_write - RK1608 synchronous write
> + *
> + * @spi: spi device
> + * @addr: resource address
> + * @data: data buffer
> + * @data_len: data buffer size, in bytes
> + * Context: can sleep
> + *
> + * It returns zero on success, else a negative error code.
> + */
> +int rk1608_write(struct spi_device *spi, s32 addr,
> +                const s32 *data, size_t data_len);
> +
> +/**
> + * rk1608_safe_write - RK1608 synchronous write with state check
> + *
> + * @spi: spi device
> + * @addr: resource address
> + * @data: data buffer
> + * @data_len: data buffer size, in bytes
> + * Context: can sleep
> + *
> + * It returns zero on success, else operation state code.
> + */
> +int rk1608_safe_write(struct spi_device *spi,
> +                     s32 addr, const s32 *data, size_t data_len);
> +
> +/**
> + * rk1608_read - RK1608 synchronous read
> + *
> + * @spi: spi device
> + * @addr: resource address
> + * @data: data buffer [out]
> + * @data_len: data buffer size, in bytes
> + * Context: can sleep
> + *
> + * It returns zero on success, else a negative error code.
> + */
> +int rk1608_read(struct spi_device *spi, s32 addr,
> +               s32 *data, size_t data_len);
> +
> +/**
> + * rk1608_safe_read - RK1608 synchronous read with state check
> + *
> + * @spi: spi device
> + * @addr: resource address
> + * @data: data buffer [out]
> + * @data_len: data buffer size, in bytes
> + * Context: can sleep
> + *
> + * It returns zero on success, else operation state code.
> + */
> +int rk1608_safe_read(struct spi_device *spi,
> +                    s32 addr, s32 *data, size_t data_len);
> +
> +/**
> + * rk1608_operation_query - RK1608 last operation state query
> + *
> + * @spi: spi device
> + * @state: last operation state [out]
> + * Context: can sleep
> + *
> + * It returns zero on success, else a negative error code.
> + */
> +int rk1608_operation_query(struct spi_device *spi, s32 *state);
> +
> +/**
> + * rk1608_interrupt_request - RK1608 request a rk1608 interrupt
> + *
> + * @spi: spi device
> + * @interrupt_num: interrupt identification
> + * Context: can sleep
> + *
> + * It returns zero on success, else a negative error code.
> + */
> +int rk1608_interrupt_request(struct spi_device *spi,
> +                            s32 interrupt_num);
> +
> +static int rk1608_read_wait(struct spi_device *spi,
> +                           const struct rk1608_section *sec);
> +
> +static int rk1608_boot_request(struct spi_device *spi,
> +                              const struct rk1608_section *sec);
> +
> +static int rk1608_download_section(struct spi_device *spi, const u8 *data,
> +                                  const struct rk1608_section *sec);
> +/**
> + * rk1608_download_fw: - rk1608 firmware download through spi
> + *
> + * @spi: spi device
> + * @fw_name: name of firmware file, NULL for default firmware name
> + * Context: can sleep
> + *
> + * It returns zero on success, else a negative error code.
> + **/
> +int rk1608_download_fw(struct spi_device *spi, const char *fw_name);
> +
> +/**
> + * rk1608_msq_read_head - read rk1608 msg queue head
> + *
> + * @spi: spi device
> + * @addr: msg queue head addr
> + * @m: msg queue pointer
> + *
> + * It returns zero on success, else a negative error code.
> + */
> +int rk1608_msq_read_head(struct spi_device *spi,
> +                        u32 addr, struct rk1608_msg_queue *q);
> +
> +/**
> + * rk1608_msq_recv_msg - receive a msg from RK1608 -> AP msg queue
> + *
> + * @q: msg queue
> + * @m: a msg pointer buf [out]
> + *
> + * need call rk1608_msq_free_received_msg to free msg after msg use done
> + *
> + * It returns zero on success, else a negative error code.
> + */
> +int rk1608_msq_recv_msg(struct spi_device *spi, struct msg **m);
> +#endif
> --
> 2.7.4
>
>

Please rebase your kernel tree to linux-next or media_tree, not
rockchip bsp kernel.

https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/
https://git.linuxtv.org/




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