diff options
author | Sandor Yu <R01008@freescale.com> | 2015-05-29 17:54:25 +0800 |
---|---|---|
committer | Nitin Garg <nitin.garg@freescale.com> | 2015-09-17 09:23:31 -0500 |
commit | f8a01083cf13a4afc77a7089522ac06a040964db (patch) | |
tree | 8ef66b9688addeb3afa7653cf7b53e53aaa6237a /drivers/media/platform/mxc/subdev | |
parent | c735af6f2be3e66abc1be7a987fdc1f27b3e6434 (diff) |
MLK-10256-07: mipi csi: Enable mipi csi driver
Enable mipi csi driver.
Driver implemented in subdev architecture.
support YUYV format.
Signed-off-by: Sandor Yu <R01008@freescale.com>
Diffstat (limited to 'drivers/media/platform/mxc/subdev')
-rw-r--r-- | drivers/media/platform/mxc/subdev/Kconfig | 11 | ||||
-rw-r--r-- | drivers/media/platform/mxc/subdev/Makefile | 4 | ||||
-rw-r--r-- | drivers/media/platform/mxc/subdev/mxc_mipi_csi.c | 1253 |
3 files changed, 1268 insertions, 0 deletions
diff --git a/drivers/media/platform/mxc/subdev/Kconfig b/drivers/media/platform/mxc/subdev/Kconfig index d3fc164e9f33..df6c1f679d91 100644 --- a/drivers/media/platform/mxc/subdev/Kconfig +++ b/drivers/media/platform/mxc/subdev/Kconfig @@ -18,4 +18,15 @@ config MXC_VADC ---help--- If you plan to use the VADC with your MXC system, say Y here. +config MXC_MIPI_CSI + tristate "mxc mipi csi driver" + depends on VIDEO_MXC_CAPTURE && VIDEO_V4L2 + ---help--- + This is a V4L2 driver for i.MX7D SoC MIPI-CSI2 receiver devices. + +config MXC_CAMERA_OV5640_MIPI + tristate "OmniVision ov5640 camera support using mipi" + depends on MXC_MIPI_CSI && I2C + ---help--- + If you plan to use the ov5640 Camera with mipi interface in your MXC system, say Y here. endif diff --git a/drivers/media/platform/mxc/subdev/Makefile b/drivers/media/platform/mxc/subdev/Makefile index 0602ae760d4a..d2034753a158 100644 --- a/drivers/media/platform/mxc/subdev/Makefile +++ b/drivers/media/platform/mxc/subdev/Makefile @@ -2,6 +2,10 @@ obj-$(CONFIG_VIDEO_MXC_CSI_CAMERA) += mx6s_capture.o obj-$(CONFIG_MXC_VADC) += mxc_vadc.o +obj-$(CONFIG_MXC_MIPI_CSI) += mxc_mipi_csi.o ov5640_camera-objs := ov5640.o obj-$(CONFIG_MXC_CAMERA_OV5640) += ov5640_camera.o + +ov5640_camera_mipi-objs := ov5640_mipi.o +obj-$(CONFIG_MXC_CAMERA_OV5640_MIPI) += ov5640_camera_mipi.o diff --git a/drivers/media/platform/mxc/subdev/mxc_mipi_csi.c b/drivers/media/platform/mxc/subdev/mxc_mipi_csi.c new file mode 100644 index 000000000000..c97da0a10293 --- /dev/null +++ b/drivers/media/platform/mxc/subdev/mxc_mipi_csi.c @@ -0,0 +1,1253 @@ +/* + * Freescale i.MX7 SoC series MIPI-CSI V3.3 receiver driver + * + * Copyright (C) 2015 Freescale Semiconductor, Inc. All Rights Reserved. + */ + +/* + * The code contained herein is licensed under the GNU General Public + * License. You may obtain a copy of the GNU General Public License + * Version 2 or later at the following locations: + * + * http://www.opensource.org/licenses/gpl-license.html + * http://www.gnu.org/copyleft/gpl.html + */ +/* + * Samsung S5P/EXYNOS SoC series MIPI-CSI receiver driver + * + * Copyright (C) 2011 - 2013 Samsung Electronics Co., Ltd. + * Author: Sylwester Nawrocki <s.nawrocki@samsung.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ + +#include <linux/clk.h> +#include <linux/delay.h> +#include <linux/device.h> +#include <linux/errno.h> +#include <linux/interrupt.h> +#include <linux/io.h> +#include <linux/irq.h> +#include <linux/kernel.h> +#include <linux/memory.h> +#include <linux/mfd/syscon.h> +#include <linux/module.h> +#include <linux/of.h> +#include <linux/of_graph.h> +#include <linux/phy/phy.h> +#include <linux/platform_data/mipi-csis.h> +#include <linux/platform_device.h> +#include <linux/pm_runtime.h> +#include <linux/regmap.h> +#include <linux/regulator/consumer.h> +#include <linux/slab.h> +#include <linux/spinlock.h> +#include <linux/videodev2.h> +#include <media/v4l2-of.h> +#include <media/v4l2-subdev.h> +#include <media/v4l2-device.h> + +static int debug; +module_param(debug, int, 0644); +MODULE_PARM_DESC(debug, "Debug level (0-2)"); + +#define CSIS_DRIVER_NAME "mxc_mipi-csi" +#define CSIS_SUBDEV_NAME CSIS_DRIVER_NAME +#define CSIS_MAX_ENTITIES 2 +#define CSIS0_MAX_LANES 4 +#define CSIS1_MAX_LANES 2 + +#define MIPI_CSIS_DEF_PIX_WIDTH 640 +#define MIPI_CSIS_DEF_PIX_HEIGHT 480 + +/* Register map definition */ + +/* CSIS version */ +#define MIPI_CSIS_VERSION 0x00 + +/* CSIS common control */ +#define MIPI_CSIS_CMN_CTRL 0x04 +#define MIPI_CSIS_CMN_CTRL_UPDATE_SHADOW (1 << 16) +#define MIPI_CSIS_CMN_CTRL_INTER_MODE (1 << 10) +#define MIPI_CSIS_CMN_CTRL_LANE_NR_OFFSET 8 +#define MIPI_CSIS_CMN_CTRL_LANE_NR_MASK (3 << 8) +#define MIPI_CSIS_CMN_CTRL_UPDATE_SHADOW_CTRL (1 << 2) +#define MIPI_CSIS_CMN_CTRL_RESET (1 << 1) +#define MIPI_CSIS_CMN_CTRL_ENABLE (1 << 0) + +/* CSIS clock control */ +#define MIPI_CSIS_CLK_CTRL 0x08 +#define MIPI_CSIS_CLK_CTRL_CLKGATE_TRAIL_CH3(x) (x << 28) +#define MIPI_CSIS_CLK_CTRL_CLKGATE_TRAIL_CH2(x) (x << 24) +#define MIPI_CSIS_CLK_CTRL_CLKGATE_TRAIL_CH1(x) (x << 20) +#define MIPI_CSIS_CLK_CTRL_CLKGATE_TRAIL_CH0(x) (x << 16) +#define MIPI_CSIS_CLK_CTRL_CLKGATE_EN_MSK (0xf << 4) +#define MIPI_CSIS_CLK_CTRL_WCLK_SRC (1 << 0) + +/* CSIS Interrupt mask */ +#define MIPI_CSIS_INTMSK 0x10 +#define MIPI_CSIS_INTMSK_EVEN_BEFORE (1 << 31) +#define MIPI_CSIS_INTMSK_EVEN_AFTER (1 << 30) +#define MIPI_CSIS_INTMSK_ODD_BEFORE (1 << 29) +#define MIPI_CSIS_INTMSK_ODD_AFTER (1 << 28) +#define MIPI_CSIS_INTMSK_FRAME_START (1 << 24) +#define MIPI_CSIS_INTMSK_FRAME_END (1 << 20) +#define MIPI_CSIS_INTMSK_ERR_SOT_HS (1 << 16) +#define MIPI_CSIS_INTMSK_ERR_LOST_FS (1 << 12) +#define MIPI_CSIS_INTMSK_ERR_LOST_FE (1 << 8) +#define MIPI_CSIS_INTMSK_ERR_OVER (1 << 4) +#define MIPI_CSIS_INTMSK_ERR_WRONG_CFG (1 << 3) +#define MIPI_CSIS_INTMSK_ERR_ECC (1 << 2) +#define MIPI_CSIS_INTMSK_ERR_CRC (1 << 1) +#define MIPI_CSIS_INTMSK_ERR_UNKNOWN (1 << 0) + +/* CSIS Interrupt source */ +#define MIPI_CSIS_INTSRC 0x14 +#define MIPI_CSIS_INTSRC_EVEN_BEFORE (1 << 31) +#define MIPI_CSIS_INTSRC_EVEN_AFTER (1 << 30) +#define MIPI_CSIS_INTSRC_EVEN (0x3 << 30) +#define MIPI_CSIS_INTSRC_ODD_BEFORE (1 << 29) +#define MIPI_CSIS_INTSRC_ODD_AFTER (1 << 28) +#define MIPI_CSIS_INTSRC_ODD (0x3 << 28) +#define MIPI_CSIS_INTSRC_NON_IMAGE_DATA (0xf << 28) +#define MIPI_CSIS_INTSRC_FRAME_START (1 << 24) +#define MIPI_CSIS_INTSRC_FRAME_END (1 << 20) +#define MIPI_CSIS_INTSRC_ERR_SOT_HS (1 << 16) +#define MIPI_CSIS_INTSRC_ERR_LOST_FS (1 << 12) +#define MIPI_CSIS_INTSRC_ERR_LOST_FE (1 << 8) +#define MIPI_CSIS_INTSRC_ERR_OVER (1 << 4) +#define MIPI_CSIS_INTSRC_ERR_WRONG_CFG (1 << 3) +#define MIPI_CSIS_INTSRC_ERR_ECC (1 << 2) +#define MIPI_CSIS_INTSRC_ERR_CRC (1 << 1) +#define MIPI_CSIS_INTSRC_ERR_UNKNOWN (1 << 0) +#define MIPI_CSIS_INTSRC_ERRORS 0xfffff + +/* D-PHY status control */ +#define MIPI_CSIS_DPHYSTATUS 0x20 +#define MIPI_CSIS_DPHYSTATUS_ULPS_DAT (1 << 8) +#define MIPI_CSIS_DPHYSTATUS_STOPSTATE_DAT (1 << 4) +#define MIPI_CSIS_DPHYSTATUS_ULPS_CLK (1 << 1) +#define MIPI_CSIS_DPHYSTATUS_STOPSTATE_CLK (1 << 0) + +/* D-PHY common control */ +#define MIPI_CSIS_DPHYCTRL 0x24 +#define MIPI_CSIS_DPHYCTRL_HSS_MASK (0xff << 24) +#define MIPI_CSIS_DPHYCTRL_HSS_OFFSET 24 +#define MIPI_CSIS_DPHYCTRL_SCLKS_MASK (0x3 << 22) +#define MIPI_CSIS_DPHYCTRL_SCLKS_OFFSET 22 +#define MIPI_CSIS_DPHYCTRL_DPDN_SWAP_CLK (1 << 6) +#define MIPI_CSIS_DPHYCTRL_DPDN_SWAP_DAT (1 << 5) +#define MIPI_CSIS_DPHYCTRL_ENABLE_DAT (1 << 1) +#define MIPI_CSIS_DPHYCTRL_ENABLE_CLK (1 << 0) +#define MIPI_CSIS_DPHYCTRL_ENABLE (0x1f << 0) + +/* D-PHY Master and Slave Control register Low */ +#define MIPI_CSIS_DPHYBCTRL_L 0x30 +/* D-PHY Master and Slave Control register High */ +#define MIPI_CSIS_DPHYBCTRL_H 0x34 +/* D-PHY Slave Control register Low */ +#define MIPI_CSIS_DPHYSCTRL_L 0x38 +/* D-PHY Slave Control register High */ +#define MIPI_CSIS_DPHYSCTRL_H 0x3c + + +/* ISP Configuration register */ +#define MIPI_CSIS_ISPCONFIG_CH0 0x40 +#define MIPI_CSIS_ISPCONFIG_CH1 0x50 +#define MIPI_CSIS_ISPCONFIG_CH2 0x60 +#define MIPI_CSIS_ISPCONFIG_CH3 0x70 + +#define MIPI_CSIS_ISPCFG_MEM_FULL_GAP_MSK (0xff << 24) +#define MIPI_CSIS_ISPCFG_MEM_FULL_GAP(x) (x << 24) +#define MIPI_CSIS_ISPCFG_DOUBLE_CMPNT (1 << 12) +#define MIPI_CSIS_ISPCFG_ALIGN_32BIT (1 << 11) +#define MIPI_CSIS_ISPCFG_FMT_YCBCR422_8BIT (0x1e << 2) +#define MIPI_CSIS_ISPCFG_FMT_RAW8 (0x2a << 2) +#define MIPI_CSIS_ISPCFG_FMT_RAW10 (0x2b << 2) +#define MIPI_CSIS_ISPCFG_FMT_RAW12 (0x2c << 2) +/* User defined formats, x = 1...4 */ +#define MIPI_CSIS_ISPCFG_FMT_USER(x) ((0x30 + x - 1) << 2) +#define MIPI_CSIS_ISPCFG_FMT_MASK (0x3f << 2) + +/* ISP Image Resolution register */ +#define MIPI_CSIS_ISPRESOL_CH0 0x44 +#define MIPI_CSIS_ISPRESOL_CH1 0x54 +#define MIPI_CSIS_ISPRESOL_CH2 0x64 +#define MIPI_CSIS_ISPRESOL_CH3 0x74 +#define CSIS_MAX_PIX_WIDTH 0xffff +#define CSIS_MAX_PIX_HEIGHT 0xffff + +/* ISP SYNC register */ +#define MIPI_CSIS_ISPSYNC_CH0 0x48 +#define MIPI_CSIS_ISPSYNC_CH1 0x58 +#define MIPI_CSIS_ISPSYNC_CH2 0x68 +#define MIPI_CSIS_ISPSYNC_CH3 0x78 + +#define MIPI_CSIS_ISPSYNC_HSYNC_LINTV_OFFSET 18 +#define MIPI_CSIS_ISPSYNC_VSYNC_SINTV_OFFSET 12 +#define MIPI_CSIS_ISPSYNC_VSYNC_EINTV_OFFSET 0 + +/* Non-image packet data buffers */ +#define MIPI_CSIS_PKTDATA_ODD 0x2000 +#define MIPI_CSIS_PKTDATA_EVEN 0x3000 +#define MIPI_CSIS_PKTDATA_SIZE SZ_4K + +#define DEFAULT_SCLK_CSIS_FREQ 166000000UL + +enum { + ST_POWERED = 1, + ST_STREAMING = 2, + ST_SUSPENDED = 4, +}; + +struct mipi_csis_event { + u32 mask; + const char * const name; + unsigned int counter; +}; + +static const struct mipi_csis_event mipi_csis_events[] = { + /* Errors */ + { MIPI_CSIS_INTSRC_ERR_SOT_HS, "SOT Error" }, + { MIPI_CSIS_INTSRC_ERR_LOST_FS, "Lost Frame Start Error" }, + { MIPI_CSIS_INTSRC_ERR_LOST_FE, "Lost Frame End Error" }, + { MIPI_CSIS_INTSRC_ERR_OVER, "FIFO Overflow Error" }, + { MIPI_CSIS_INTSRC_ERR_ECC, "ECC Error" }, + { MIPI_CSIS_INTSRC_ERR_CRC, "CRC Error" }, + { MIPI_CSIS_INTSRC_ERR_UNKNOWN, "Unknown Error" }, + /* Non-image data receive events */ + { MIPI_CSIS_INTSRC_EVEN_BEFORE, "Non-image data before even frame" }, + { MIPI_CSIS_INTSRC_EVEN_AFTER, "Non-image data after even frame" }, + { MIPI_CSIS_INTSRC_ODD_BEFORE, "Non-image data before odd frame" }, + { MIPI_CSIS_INTSRC_ODD_AFTER, "Non-image data after odd frame" }, + /* Frame start/end */ + { MIPI_CSIS_INTSRC_FRAME_START, "Frame Start" }, + { MIPI_CSIS_INTSRC_FRAME_END, "Frame End" }, +}; +#define MIPI_CSIS_NUM_EVENTS ARRAY_SIZE(mipi_csis_events) + +struct csis_pktbuf { + u32 *data; + unsigned int len; +}; + +struct csis_hw_reset { + struct regmap *src; + u8 req_src; + u8 rst_bit; +}; + +/** + * struct csi_state - the driver's internal state data structure + * @lock: mutex serializing the subdev and power management operations, + * protecting @format and @flags members + * @sd: v4l2_subdev associated with CSIS device instance + * @index: the hardware instance index + * @pdev: CSIS platform device + * @phy: pointer to the CSIS generic PHY + * @regs: mmaped I/O registers memory + * @supplies: CSIS regulator supplies + * @clock: CSIS clocks + * @irq: requested s5p-mipi-csis irq number + * @flags: the state variable for power and streaming control + * @clock_frequency: device bus clock frequency + * @hs_settle: HS-RX settle time + * @num_lanes: number of MIPI-CSI data lanes used + * @max_num_lanes: maximum number of MIPI-CSI data lanes supported + * @wclk_ext: CSI wrapper clock: 0 - bus clock, 1 - external SCLK_CAM + * @csis_fmt: current CSIS pixel format + * @format: common media bus format for the source and sink pad + * @slock: spinlock protecting structure members below + * @pkt_buf: the frame embedded (non-image) data buffer + * @events: MIPI-CSIS event (error) counters + */ +struct csi_state { + struct mutex lock; + struct device *dev; + struct v4l2_subdev mipi_sd; + struct v4l2_subdev *sensor_sd; + struct v4l2_device v4l2_dev; + + u8 index; + struct platform_device *pdev; + struct phy *phy; + void __iomem *regs; + struct clk *mipi_clk; + struct clk *phy_clk; + int irq; + u32 flags; + + u32 clk_frequency; + u32 hs_settle; + u32 num_lanes; + u32 max_num_lanes; + u8 wclk_ext; + + const struct csis_pix_format *csis_fmt; + struct v4l2_mbus_framefmt format; + + spinlock_t slock; + struct csis_pktbuf pkt_buf; + struct mipi_csis_event events[MIPI_CSIS_NUM_EVENTS]; + + struct v4l2_async_subdev asd; + struct v4l2_async_notifier subdev_notifier; + struct v4l2_async_subdev *async_subdevs[2]; + + struct csis_hw_reset hw_reset; + struct regulator *mipi_phy_regulator; +}; + +/** + * struct csis_pix_format - CSIS pixel format description + * @pix_width_alignment: horizontal pixel alignment, width will be + * multiple of 2^pix_width_alignment + * @code: corresponding media bus code + * @fmt_reg: MIPI_CSIS_CONFIG register value + * @data_alignment: MIPI-CSI data alignment in bits + */ +struct csis_pix_format { + unsigned int pix_width_alignment; + enum v4l2_mbus_pixelcode code; + u32 fmt_reg; + u8 data_alignment; +}; + +static const struct csis_pix_format mipi_csis_formats[] = { + { + .code = V4L2_MBUS_FMT_YUYV8_2X8, + .fmt_reg = MIPI_CSIS_ISPCFG_FMT_YCBCR422_8BIT, + .data_alignment = 16, + }, { + .code = V4L2_MBUS_FMT_VYUY8_2X8, + .fmt_reg = MIPI_CSIS_ISPCFG_FMT_YCBCR422_8BIT, + .data_alignment = 16, + } +}; + +#define mipi_csis_write(__csis, __r, __v) writel(__v, __csis->regs + __r) +#define mipi_csis_read(__csis, __r) readl(__csis->regs + __r) + +static struct csi_state *mipi_sd_to_csi_state(struct v4l2_subdev *sdev) +{ + return container_of(sdev, struct csi_state, mipi_sd); +} + +static inline struct csi_state + *notifier_to_mipi_dev(struct v4l2_async_notifier *n) +{ + return container_of(n, struct csi_state, subdev_notifier); +} + +static const struct csis_pix_format *find_csis_format( + enum v4l2_mbus_pixelcode code) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(mipi_csis_formats); i++) + if (code == mipi_csis_formats[i].code) + return &mipi_csis_formats[i]; + return NULL; +} + +static void mipi_csis_enable_interrupts(struct csi_state *state, bool on) +{ + u32 val = mipi_csis_read(state, MIPI_CSIS_INTMSK); + if (on) + val |= 0xf00fffff; + else + val &= ~0xf00fffff; + mipi_csis_write(state, MIPI_CSIS_INTMSK, val); +} + +static void mipi_csis_sw_reset(struct csi_state *state) +{ + u32 val = mipi_csis_read(state, MIPI_CSIS_CMN_CTRL); + + mipi_csis_write(state, MIPI_CSIS_CMN_CTRL, val | MIPI_CSIS_CMN_CTRL_RESET); + udelay(10); +} + +static int mipi_csis_phy_init(struct csi_state *state) +{ + int ret; + + state->mipi_phy_regulator = devm_regulator_get(state->dev, + "mipi-phy"); + + ret = regulator_set_voltage(state->mipi_phy_regulator, + 1000000, 1000000); + + ret = regulator_enable(state->mipi_phy_regulator); + if (ret) { + dev_err(state->dev, "failed to set mipi regulator.\n"); + return ret; + } + return ret; +} + +static int mipi_csis_phy_reset(struct csi_state *state) +{ + struct device_node *np = state->dev->of_node; + struct device_node *node; + phandle phandle; + u32 out_val[3]; + int ret; + + ret = of_property_read_u32_array(np, "csis-phy-reset", out_val, 3); + if (ret) { + dev_dbg(state->dev, "no csis-hw-reset property found\n"); + } else { + phandle = *out_val; + + node = of_find_node_by_phandle(phandle); + if (!node) { + dev_dbg(state->dev, "not find src node by phandle\n"); + ret = PTR_ERR(node); + } + state->hw_reset.src = syscon_node_to_regmap(node); + if (IS_ERR(state->hw_reset.src)) { + dev_err(state->dev, "failed to get src regmap\n"); + ret = PTR_ERR(state->hw_reset.src); + } + of_node_put(node); + if (ret < 0) + return ret; + + state->hw_reset.req_src = out_val[1]; + state->hw_reset.rst_bit = out_val[2]; + + /* reset mipi phy */ + regmap_update_bits(state->hw_reset.src, state->hw_reset.req_src, + 1 << state->hw_reset.rst_bit, 1 << state->hw_reset.rst_bit); + msleep(20); + regmap_update_bits(state->hw_reset.src, state->hw_reset.req_src, + 1 << state->hw_reset.rst_bit, 0); + + } + return ret; +} + +static void mipi_csis_system_enable(struct csi_state *state, int on) +{ + u32 val, mask; + + val = mipi_csis_read(state, MIPI_CSIS_CMN_CTRL); + if (on) + val |= MIPI_CSIS_CMN_CTRL_ENABLE; + else + val &= ~MIPI_CSIS_CMN_CTRL_ENABLE; + mipi_csis_write(state, MIPI_CSIS_CMN_CTRL, val); + + val = mipi_csis_read(state, MIPI_CSIS_DPHYCTRL); + val &= ~MIPI_CSIS_DPHYCTRL_ENABLE; + if (on) { + mask = (1 << (state->num_lanes + 1)) - 1; + val |= (mask & MIPI_CSIS_DPHYCTRL_ENABLE); + } + mipi_csis_write(state, MIPI_CSIS_DPHYCTRL, val); +} + +/* Called with the state.lock mutex held */ +static void __mipi_csis_set_format(struct csi_state *state) +{ + struct v4l2_mbus_framefmt *mf = &state->format; + u32 val; + + v4l2_dbg(1, debug, &state->mipi_sd, "fmt: %#x, %d x %d\n", + mf->code, mf->width, mf->height); + + /* Color format */ + val = mipi_csis_read(state, MIPI_CSIS_ISPCONFIG_CH0); + val = (val & ~MIPI_CSIS_ISPCFG_FMT_MASK) | state->csis_fmt->fmt_reg; + mipi_csis_write(state, MIPI_CSIS_ISPCONFIG_CH0, val); + + /* Pixel resolution */ + val = mf->width | (mf->height << 16); + mipi_csis_write(state, MIPI_CSIS_ISPRESOL_CH0, val); +} + +static void mipi_csis_set_hsync_settle(struct csi_state *state, int settle) +{ + u32 val = mipi_csis_read(state, MIPI_CSIS_DPHYCTRL); + + val = (val & ~MIPI_CSIS_DPHYCTRL_HSS_MASK) | (settle << 24); + mipi_csis_write(state, MIPI_CSIS_DPHYCTRL, val); +} + +static void mipi_csis_set_params(struct csi_state *state) +{ + u32 val; + + val = mipi_csis_read(state, MIPI_CSIS_CMN_CTRL); + val &= ~MIPI_CSIS_CMN_CTRL_LANE_NR_MASK; + val |= (state->num_lanes - 1) << MIPI_CSIS_CMN_CTRL_LANE_NR_OFFSET; + mipi_csis_write(state, MIPI_CSIS_CMN_CTRL, val); + + __mipi_csis_set_format(state); + + mipi_csis_set_hsync_settle(state, state->hs_settle); + + val = mipi_csis_read(state, MIPI_CSIS_ISPCONFIG_CH0); + if (state->csis_fmt->data_alignment == 32) + val |= MIPI_CSIS_ISPCFG_ALIGN_32BIT; + else /* 24-bits */ + val &= ~MIPI_CSIS_ISPCFG_ALIGN_32BIT; + mipi_csis_write(state, MIPI_CSIS_ISPCONFIG_CH0, val); + + val = (0 << MIPI_CSIS_ISPSYNC_HSYNC_LINTV_OFFSET) | + (0 << MIPI_CSIS_ISPSYNC_VSYNC_SINTV_OFFSET) | + (0 << MIPI_CSIS_ISPSYNC_VSYNC_EINTV_OFFSET); + mipi_csis_write(state, MIPI_CSIS_ISPSYNC_CH0, val); + + val = mipi_csis_read(state, MIPI_CSIS_CLK_CTRL); + val &= ~MIPI_CSIS_CLK_CTRL_WCLK_SRC; + if (state->wclk_ext) + val |= MIPI_CSIS_CLK_CTRL_WCLK_SRC; + val |= MIPI_CSIS_CLK_CTRL_CLKGATE_TRAIL_CH0(15); + val &= ~MIPI_CSIS_CLK_CTRL_CLKGATE_EN_MSK; + mipi_csis_write(state, MIPI_CSIS_CLK_CTRL, val); + + mipi_csis_write(state, MIPI_CSIS_DPHYBCTRL_L, 0x1f4); + mipi_csis_write(state, MIPI_CSIS_DPHYBCTRL_H, 0); + + /* Update the shadow register. */ + val = mipi_csis_read(state, MIPI_CSIS_CMN_CTRL); + mipi_csis_write(state, MIPI_CSIS_CMN_CTRL, val | MIPI_CSIS_CMN_CTRL_UPDATE_SHADOW | + MIPI_CSIS_CMN_CTRL_UPDATE_SHADOW_CTRL); +} + +static void mipi_csis_clk_enable(struct csi_state *state) +{ + clk_prepare_enable(state->mipi_clk); + clk_prepare_enable(state->phy_clk); +} + +static void mipi_csis_clk_disable(struct csi_state *state) +{ + clk_disable_unprepare(state->mipi_clk); + clk_disable_unprepare(state->phy_clk); +} + +static int mipi_csis_clk_get(struct csi_state *state) +{ + struct device *dev = &state->pdev->dev; + int ret = true; + + state->mipi_clk = devm_clk_get(dev, "mipi_clk"); + if (IS_ERR(state->mipi_clk)) { + dev_err(dev, "Could not get mipi csi clock\n"); + return -ENODEV; + } + + state->phy_clk = devm_clk_get(dev, "phy_clk"); + if (IS_ERR(state->phy_clk)) { + dev_err(dev, "Could not get mipi phy clock\n"); + return -ENODEV; + } + + /* Set clock rate */ + if (state->clk_frequency) + ret = clk_set_rate(state->mipi_clk, + state->clk_frequency); + else + dev_WARN(dev, "No clock frequency specified!\n"); + if (ret < 0) { + dev_err(dev, "set rate filed, rate=%d\n", state->clk_frequency); + return -EINVAL; + } + + return ret; +} + +static void dump_regs(struct csi_state *state, const char *label) +{ + struct { + u32 offset; + const char * const name; + } registers[] = { + { 0x00, "CTRL" }, + { 0x04, "DPHYCTRL" }, + { 0x08, "CONFIG" }, + { 0x0c, "DPHYSTS" }, + { 0x10, "INTMSK" }, + { 0x2c, "RESOL" }, + { 0x38, "SDW_CONFIG" }, + }; + u32 i; + + v4l2_info(&state->mipi_sd, "--- %s ---\n", label); + + for (i = 0; i < ARRAY_SIZE(registers); i++) { + u32 cfg = mipi_csis_read(state, registers[i].offset); + v4l2_info(&state->mipi_sd, "%10s: 0x%08x\n", registers[i].name, cfg); + } +} + +static void mipi_csis_start_stream(struct csi_state *state) +{ + mipi_csis_sw_reset(state); + mipi_csis_set_params(state); + mipi_csis_system_enable(state, true); + mipi_csis_enable_interrupts(state, true); +} + +static void mipi_csis_stop_stream(struct csi_state *state) +{ + mipi_csis_enable_interrupts(state, false); + mipi_csis_system_enable(state, false); +} + +static void mipi_csis_clear_counters(struct csi_state *state) +{ + unsigned long flags; + int i; + + spin_lock_irqsave(&state->slock, flags); + for (i = 0; i < MIPI_CSIS_NUM_EVENTS; i++) + state->events[i].counter = 0; + spin_unlock_irqrestore(&state->slock, flags); +} + +static void mipi_csis_log_counters(struct csi_state *state, bool non_errors) +{ + int i = non_errors ? MIPI_CSIS_NUM_EVENTS : MIPI_CSIS_NUM_EVENTS - 4; + unsigned long flags; + + spin_lock_irqsave(&state->slock, flags); + + for (i--; i >= 0; i--) { + if (state->events[i].counter > 0 || debug) + v4l2_info(&state->mipi_sd, "%s events: %d\n", + state->events[i].name, + state->events[i].counter); + } + spin_unlock_irqrestore(&state->slock, flags); +} + +/* + * V4L2 subdev operations + */ +static int mipi_csis_s_power(struct v4l2_subdev *mipi_sd, int on) +{ + struct csi_state *state = mipi_sd_to_csi_state(mipi_sd); + struct device *dev = &state->pdev->dev; + + v4l2_subdev_call(state->sensor_sd, core, s_power, on); + + if (on) + return pm_runtime_get_sync(dev); + + return pm_runtime_put_sync(dev); +} + +static int mipi_csis_s_stream(struct v4l2_subdev *mipi_sd, int enable) +{ + struct csi_state *state = mipi_sd_to_csi_state(mipi_sd); + int ret = 0; + + v4l2_dbg(1, debug, mipi_sd, "%s: %d, state: 0x%x\n", + __func__, enable, state->flags); + + if (enable) { + mipi_csis_clear_counters(state); + ret = pm_runtime_get_sync(&state->pdev->dev); + if (ret && ret != 1) + return ret; + } + + mutex_lock(&state->lock); + if (enable) { + if (state->flags & ST_SUSPENDED) { + ret = -EBUSY; + goto unlock; + } + mipi_csis_start_stream(state); + state->flags |= ST_STREAMING; + } else { + mipi_csis_stop_stream(state); + state->flags &= ~ST_STREAMING; + if (debug > 0) + mipi_csis_log_counters(state, true); + } +unlock: + mutex_unlock(&state->lock); + if (!enable) + pm_runtime_put(&state->pdev->dev); + + return ret == 1 ? 0 : ret; +} + +static int mipi_csis_enum_mbus_fmt(struct v4l2_subdev *mipi_sd, unsigned int index, + enum v4l2_mbus_pixelcode *code) +{ + struct csi_state *state = mipi_sd_to_csi_state(mipi_sd); + struct v4l2_subdev *sensor_sd = state->sensor_sd; + struct csis_pix_format const *csis_fmt; + int ret; + + ret = v4l2_subdev_call(sensor_sd, video, enum_mbus_fmt, index, code); + if (ret < 0) + return -EINVAL; + + csis_fmt = find_csis_format(*code); + if (csis_fmt == NULL) { + dev_err(state->dev, "format not match\n"); + return -EINVAL; + } + + return ret; +} + +static struct csis_pix_format const *mipi_csis_try_format( + struct v4l2_subdev *mipi_sd, struct v4l2_mbus_framefmt *mf) +{ + struct csi_state *state = mipi_sd_to_csi_state(mipi_sd); + struct v4l2_subdev *sensor_sd = state->sensor_sd; + struct csis_pix_format const *csis_fmt; + + csis_fmt = find_csis_format(mf->code); + if (csis_fmt == NULL) + csis_fmt = &mipi_csis_formats[0]; + + v4l2_subdev_call(sensor_sd, video, s_mbus_fmt, mf); + + mf->code = csis_fmt->code; + v4l_bound_align_image(&mf->width, 1, CSIS_MAX_PIX_WIDTH, + csis_fmt->pix_width_alignment, + &mf->height, 1, CSIS_MAX_PIX_HEIGHT, 1, + 0); + + state->format.code = mf->code; + state->format.width = mf->width; + state->format.height = mf->height; + + return csis_fmt; +} + +static int mipi_csis_set_fmt(struct v4l2_subdev *mipi_sd, + struct v4l2_mbus_framefmt *fmt) +{ + struct csi_state *state = mipi_sd_to_csi_state(mipi_sd); + struct csis_pix_format const *csis_fmt; + + csis_fmt = mipi_csis_try_format(mipi_sd, fmt); + if (csis_fmt) { + mutex_lock(&state->lock); + state->csis_fmt = csis_fmt; + mutex_unlock(&state->lock); + } + return 0; +} + +static int mipi_csis_get_fmt(struct v4l2_subdev *mipi_sd, + struct v4l2_mbus_framefmt *fmt) +{ + struct csi_state *state = mipi_sd_to_csi_state(mipi_sd); + struct v4l2_subdev *sensor_sd = state->sensor_sd; + + v4l2_subdev_call(sensor_sd, video, g_mbus_fmt, fmt); + if (!fmt) + return -EINVAL; + + return 0; +} + +static int mipi_csis_s_rx_buffer(struct v4l2_subdev *mipi_sd, void *buf, + unsigned int *size) +{ + struct csi_state *state = mipi_sd_to_csi_state(mipi_sd); + unsigned long flags; + + *size = min_t(unsigned int, *size, MIPI_CSIS_PKTDATA_SIZE); + + spin_lock_irqsave(&state->slock, flags); + state->pkt_buf.data = buf; + state->pkt_buf.len = *size; + spin_unlock_irqrestore(&state->slock, flags); + + return 0; +} + +static int mipi_csis_try_fmt(struct v4l2_subdev *mipi_sd, + struct v4l2_mbus_framefmt *mf) +{ + struct csi_state *state = mipi_sd_to_csi_state(mipi_sd); + struct v4l2_subdev *sensor_sd = state->sensor_sd; + + return v4l2_subdev_call(sensor_sd, video, try_mbus_fmt, mf); +} + +static int mipi_csis_s_parm(struct v4l2_subdev *mipi_sd, struct v4l2_streamparm *a) +{ + struct csi_state *state = mipi_sd_to_csi_state(mipi_sd); + struct v4l2_subdev *sensor_sd = state->sensor_sd; + + return v4l2_subdev_call(sensor_sd, video, s_parm, a); +} + +static int mipi_csis_g_parm(struct v4l2_subdev *mipi_sd, struct v4l2_streamparm *a) +{ + struct csi_state *state = mipi_sd_to_csi_state(mipi_sd); + struct v4l2_subdev *sensor_sd = state->sensor_sd; + + return v4l2_subdev_call(sensor_sd, video, g_parm, a); +} + +static int mipi_csis_enum_framesizes(struct v4l2_subdev *mipi_sd, + struct v4l2_frmsizeenum *fsize) +{ + struct csi_state *state = mipi_sd_to_csi_state(mipi_sd); + struct v4l2_subdev *sensor_sd = state->sensor_sd; + + return v4l2_subdev_call(sensor_sd, video, enum_framesizes, fsize); +} + +static int mipi_csis_enum_frameintervals(struct v4l2_subdev *mipi_sd, + struct v4l2_frmivalenum *interval) +{ + struct csi_state *state = mipi_sd_to_csi_state(mipi_sd); + struct v4l2_subdev *sensor_sd = state->sensor_sd; + + return v4l2_subdev_call(sensor_sd, video, enum_frameintervals, interval); +} + +static int mipi_csis_log_status(struct v4l2_subdev *mipi_sd) +{ + struct csi_state *state = mipi_sd_to_csi_state(mipi_sd); + + mutex_lock(&state->lock); + mipi_csis_log_counters(state, true); + if (debug && (state->flags & ST_POWERED)) + dump_regs(state, __func__); + mutex_unlock(&state->lock); + return 0; +} + +static struct v4l2_subdev_core_ops mipi_csis_core_ops = { + .s_power = mipi_csis_s_power, + .log_status = mipi_csis_log_status, +}; + +static struct v4l2_subdev_video_ops mipi_csis_video_ops = { + .s_rx_buffer = mipi_csis_s_rx_buffer, + .s_stream = mipi_csis_s_stream, + + .enum_mbus_fmt = mipi_csis_enum_mbus_fmt, + .try_mbus_fmt = mipi_csis_try_fmt, + .g_mbus_fmt = mipi_csis_get_fmt, + .s_mbus_fmt = mipi_csis_set_fmt, + + .s_parm = mipi_csis_s_parm, + .g_parm = mipi_csis_g_parm, + + .enum_framesizes = mipi_csis_enum_framesizes, + .enum_frameintervals = mipi_csis_enum_frameintervals, +}; + +static struct v4l2_subdev_ops mipi_csis_subdev_ops = { + .core = &mipi_csis_core_ops, + .video = &mipi_csis_video_ops, +}; + +static irqreturn_t mipi_csis_irq_handler(int irq, void *dev_id) +{ + struct csi_state *state = dev_id; + struct csis_pktbuf *pktbuf = &state->pkt_buf; + unsigned long flags; + u32 status; + + status = mipi_csis_read(state, MIPI_CSIS_INTSRC); + + spin_lock_irqsave(&state->slock, flags); + + if ((status & MIPI_CSIS_INTSRC_NON_IMAGE_DATA) && pktbuf->data) { + u32 offset; + + if (status & MIPI_CSIS_INTSRC_EVEN) + offset = MIPI_CSIS_PKTDATA_EVEN; + else + offset = MIPI_CSIS_PKTDATA_ODD; + + memcpy(pktbuf->data, state->regs + offset, pktbuf->len); + pktbuf->data = NULL; + rmb(); + } + + /* Update the event/error counters */ + if ((status & MIPI_CSIS_INTSRC_ERRORS) || debug) { + int i; + for (i = 0; i < MIPI_CSIS_NUM_EVENTS; i++) { + if (!(status & state->events[i].mask)) + continue; + state->events[i].counter++; + v4l2_dbg(2, debug, &state->mipi_sd, "%s: %d\n", + state->events[i].name, + state->events[i].counter); + } + v4l2_dbg(2, debug, &state->mipi_sd, "status: %08x\n", status); + } + spin_unlock_irqrestore(&state->slock, flags); + + mipi_csis_write(state, MIPI_CSIS_INTSRC, status); + return IRQ_HANDLED; +} + +static int subdev_notifier_bound(struct v4l2_async_notifier *notifier, + struct v4l2_subdev *subdev, + struct v4l2_async_subdev *asd) +{ + struct csi_state *state = notifier_to_mipi_dev(notifier); + + /* Find platform data for this sensor subdev */ + if (state->asd.match.of.node == subdev->dev->of_node) + state->sensor_sd = subdev; + + if (subdev == NULL) + return -EINVAL; + + v4l2_info(&state->v4l2_dev, "Registered sensor subdevice: %s\n", + subdev->name); + + return 0; +} + +static int mipi_csis_parse_dt(struct platform_device *pdev, + struct csi_state *state) +{ + struct device_node *node = pdev->dev.of_node; + + if (of_property_read_u32(node, "clock-frequency", + &state->clk_frequency)) + state->clk_frequency = DEFAULT_SCLK_CSIS_FREQ; + if (of_property_read_u32(node, "bus-width", + &state->max_num_lanes)) + return -EINVAL; + + node = of_graph_get_next_endpoint(node, NULL); + if (!node) { + dev_err(&pdev->dev, "No port node at %s\n", + pdev->dev.of_node->full_name); + return -EINVAL; + } + + /* Get MIPI CSI-2 bus configration from the endpoint node. */ + of_property_read_u32(node, "csis-hs-settle", + &state->hs_settle); + state->wclk_ext = of_property_read_bool(node, + "csis-wclk"); + + of_property_read_u32(node, "data-lanes", + &state->num_lanes); + of_node_put(node); + + return 0; +} + +static int mipi_csis_pm_resume(struct device *dev, bool runtime); +static const struct of_device_id mipi_csis_of_match[]; + +/* register parent dev */ +static int mipi_csis_subdev_host(struct csi_state *state) +{ + struct device_node *parent = state->dev->of_node; + struct device_node *node, *port, *rem; + int ret; + + /* Attach sensors linked to csi receivers */ + for_each_available_child_of_node(parent, node) { + if (of_node_cmp(node->name, "port")) + continue; + + /* The csi node can have only port subnode. */ + port = of_get_next_child(node, NULL); + if (!port) + continue; + rem = of_graph_get_remote_port_parent(port); + of_node_put(port); + if (rem == NULL) { + v4l2_info(&state->v4l2_dev, + "Remote device at %s not found\n", + port->full_name); + return -1; + } + + state->asd.match_type = V4L2_ASYNC_MATCH_OF; + state->asd.match.of.node = rem; + state->async_subdevs[0] = &state->asd; + + of_node_put(rem); + break; + } + + state->subdev_notifier.subdevs = state->async_subdevs; + state->subdev_notifier.num_subdevs = 1; + state->subdev_notifier.bound = subdev_notifier_bound; + + ret = v4l2_async_notifier_register(&state->v4l2_dev, + &state->subdev_notifier); + if (ret) + dev_err(state->dev, + "Error register async notifier regoster\n"); + + return ret; +} + +/* init subdev */ +static int mipi_csis_subdev_init(struct v4l2_subdev *mipi_sd, + struct platform_device *pdev, + const struct v4l2_subdev_ops *ops) +{ + struct csi_state *state = platform_get_drvdata(pdev); + int ret = 0; + + v4l2_subdev_init(mipi_sd, ops); + mipi_sd->owner = THIS_MODULE; + snprintf(mipi_sd->name, sizeof(mipi_sd->name), "%s.%d", + CSIS_SUBDEV_NAME, state->index); + mipi_sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE; + mipi_sd->dev = &pdev->dev; + + state->csis_fmt = &mipi_csis_formats[0]; + state->format.code = mipi_csis_formats[0].code; + state->format.width = MIPI_CSIS_DEF_PIX_WIDTH; + state->format.height = MIPI_CSIS_DEF_PIX_HEIGHT; + + /* This allows to retrieve the platform device id by the host driver */ + v4l2_set_subdevdata(mipi_sd, pdev); + + ret = v4l2_async_register_subdev(mipi_sd); + if (ret < 0) + dev_err(&pdev->dev, "%s--Async register faialed, ret=%d\n", __func__, ret); + + return ret; +} + +static int mipi_csis_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct v4l2_subdev *mipi_sd; + struct resource *mem_res; + struct csi_state *state; + int ret = -ENOMEM; + + state = devm_kzalloc(dev, sizeof(*state), GFP_KERNEL); + if (!state) + return -ENOMEM; + + mutex_init(&state->lock); + spin_lock_init(&state->slock); + + state->pdev = pdev; + mipi_sd = &state->mipi_sd; + state->dev = dev; + + ret = mipi_csis_parse_dt(pdev, state); + if (ret < 0) + return ret; + + if (state->num_lanes == 0 || state->num_lanes > state->max_num_lanes) { + dev_err(dev, "Unsupported number of data lanes: %d (max. %d)\n", + state->num_lanes, state->max_num_lanes); + return -EINVAL; + } + + mipi_csis_phy_init(state); + mipi_csis_phy_reset(state); + + mem_res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + state->regs = devm_ioremap_resource(dev, mem_res); + if (IS_ERR(state->regs)) + return PTR_ERR(state->regs); + + state->irq = platform_get_irq(pdev, 0); + if (state->irq < 0) { + dev_err(dev, "Failed to get irq\n"); + return state->irq; + } + + ret = mipi_csis_clk_get(state); + if (ret < 0) + return ret; + + mipi_csis_clk_enable(state); + + ret = devm_request_irq(dev, state->irq, mipi_csis_irq_handler, + 0, dev_name(dev), state); + if (ret) { + dev_err(dev, "Interrupt request failed\n"); + goto e_clkdis; + } + + /* First register a v4l2 device */ + ret = v4l2_device_register(dev, &state->v4l2_dev); + if (ret) { + v4l2_err(dev->driver, + "Unable to register v4l2 device.\n"); + goto e_clkdis; + } + v4l2_info(&state->v4l2_dev, "mipi csi v4l2 device registered\n"); + + /* .. and a pointer to the subdev. */ + platform_set_drvdata(pdev, state); + + ret = mipi_csis_subdev_init(&state->mipi_sd, pdev, &mipi_csis_subdev_ops); + if (ret < 0) + goto e_sd_mipi; + + memcpy(state->events, mipi_csis_events, sizeof(state->events)); + + /* subdev host register */ + ret = mipi_csis_subdev_host(state); + if (ret < 0) + goto e_sd_host; + + pm_runtime_enable(dev); + if (!pm_runtime_enabled(dev)) { + ret = mipi_csis_pm_resume(dev, true); + if (ret < 0) + goto e_sd_host; + } + + dev_info(&pdev->dev, "lanes: %d, hs_settle: %d, wclk: %d, freq: %u\n", + state->num_lanes, state->hs_settle, state->wclk_ext, + state->clk_frequency); + return 0; + +e_sd_host: + v4l2_async_notifier_unregister(&state->subdev_notifier); + v4l2_device_unregister(&state->v4l2_dev); +e_sd_mipi: + v4l2_async_unregister_subdev(&state->mipi_sd); +e_clkdis: + mipi_csis_clk_disable(state); + return ret; +} + +static int mipi_csis_pm_suspend(struct device *dev, bool runtime) +{ + struct platform_device *pdev = to_platform_device(dev); + struct csi_state *state = platform_get_drvdata(pdev); + struct v4l2_subdev *mipi_sd = &state->mipi_sd; + int ret = 0; + + v4l2_dbg(1, debug, mipi_sd, "%s: flags: 0x%x\n", + __func__, state->flags); + + mutex_lock(&state->lock); + if (state->flags & ST_POWERED) { + mipi_csis_stop_stream(state); + ret = regulator_disable(state->mipi_phy_regulator); + if (ret) + goto unlock; + mipi_csis_clk_disable(state); + state->flags &= ~ST_POWERED; + if (!runtime) + state->flags |= ST_SUSPENDED; + } + unlock: + mutex_unlock(&state->lock); + return ret ? -EAGAIN : 0; +} + +static int mipi_csis_pm_resume(struct device *dev, bool runtime) +{ + struct platform_device *pdev = to_platform_device(dev); + struct csi_state *state = platform_get_drvdata(pdev); + struct v4l2_subdev *mipi_sd = &state->mipi_sd; + int ret = 0; + + v4l2_dbg(1, debug, mipi_sd, "%s: flags: 0x%x\n", + __func__, state->flags); + + mutex_lock(&state->lock); + if (!runtime && !(state->flags & ST_SUSPENDED)) + goto unlock; + + if (!(state->flags & ST_POWERED)) { + ret = regulator_enable(state->mipi_phy_regulator); + if (!ret) { + state->flags |= ST_POWERED; + } else { + goto unlock; + } + mipi_csis_clk_enable(state); + } + if (state->flags & ST_STREAMING) + mipi_csis_start_stream(state); + + state->flags &= ~ST_SUSPENDED; + unlock: + mutex_unlock(&state->lock); + return ret ? -EAGAIN : 0; +} + +#ifdef CONFIG_PM_SLEEP +static int mipi_csis_suspend(struct device *dev) +{ + return mipi_csis_pm_suspend(dev, false); +} + +static int mipi_csis_resume(struct device *dev) +{ + return mipi_csis_pm_resume(dev, false); +} +#endif + +#ifdef CONFIG_PM_RUNTIME +static int mipi_csis_runtime_suspend(struct device *dev) +{ + return mipi_csis_pm_suspend(dev, true); +} + +static int mipi_csis_runtime_resume(struct device *dev) +{ + return mipi_csis_pm_resume(dev, true); +} +#endif + +static int mipi_csis_remove(struct platform_device *pdev) +{ + struct csi_state *state = platform_get_drvdata(pdev); + + v4l2_async_unregister_subdev(&state->mipi_sd); + v4l2_async_notifier_unregister(&state->subdev_notifier); + v4l2_device_unregister(&state->v4l2_dev); + + pm_runtime_disable(&pdev->dev); + mipi_csis_pm_suspend(&pdev->dev, true); + mipi_csis_clk_disable(state); + pm_runtime_set_suspended(&pdev->dev); + + return 0; +} + +static const struct dev_pm_ops mipi_csis_pm_ops = { + SET_RUNTIME_PM_OPS(mipi_csis_runtime_suspend, mipi_csis_runtime_resume, + NULL) + SET_SYSTEM_SLEEP_PM_OPS(mipi_csis_suspend, mipi_csis_resume) +}; + +static const struct of_device_id mipi_csis_of_match[] = { + { .compatible = "fsl,imx7d-mipi-csi",}, + { /* sentinel */ }, +}; +MODULE_DEVICE_TABLE(of, mipi_csis_of_match); + +static struct platform_driver mipi_csis_driver = { + .probe = mipi_csis_probe, + .remove = mipi_csis_remove, + .driver = { + .of_match_table = mipi_csis_of_match, + .name = CSIS_DRIVER_NAME, + .owner = THIS_MODULE, + .pm = &mipi_csis_pm_ops, + }, +}; + +module_platform_driver(mipi_csis_driver); + +MODULE_DESCRIPTION("Freescale MIPI-CSI2 receiver driver"); +MODULE_LICENSE("GPL"); |