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/*
* isp.h
*
* TI OMAP3 ISP - Core
*
* Copyright (C) 2009-2010 Nokia Corporation
* Copyright (C) 2009 Texas Instruments, Inc.
*
* Contacts: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
* Sakari Ailus <sakari.ailus@iki.fi>
*
* 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.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA
*/
#ifndef OMAP3_ISP_CORE_H
#define OMAP3_ISP_CORE_H
#include <media/v4l2-device.h>
#include <linux/device.h>
#include <linux/io.h>
#include <linux/platform_device.h>
#include <linux/wait.h>
#include <plat/iommu.h>
#include <plat/iovmm.h>
#include "ispstat.h"
#include "ispccdc.h"
#include "ispreg.h"
#include "ispresizer.h"
#include "isppreview.h"
#include "ispcsiphy.h"
#include "ispcsi2.h"
#include "ispccp2.h"
#define IOMMU_FLAG (IOVMF_ENDIAN_LITTLE | IOVMF_ELSZ_8)
#define ISP_TOK_TERM 0xFFFFFFFF /*
* terminating token for ISP
* modules reg list
*/
#define to_isp_device(ptr_module) \
container_of(ptr_module, struct isp_device, isp_##ptr_module)
#define to_device(ptr_module) \
(to_isp_device(ptr_module)->dev)
enum isp_mem_resources {
OMAP3_ISP_IOMEM_MAIN,
OMAP3_ISP_IOMEM_CCP2,
OMAP3_ISP_IOMEM_CCDC,
OMAP3_ISP_IOMEM_HIST,
OMAP3_ISP_IOMEM_H3A,
OMAP3_ISP_IOMEM_PREV,
OMAP3_ISP_IOMEM_RESZ,
OMAP3_ISP_IOMEM_SBL,
OMAP3_ISP_IOMEM_CSI2A_REGS1,
OMAP3_ISP_IOMEM_CSIPHY2,
OMAP3_ISP_IOMEM_CSI2A_REGS2,
OMAP3_ISP_IOMEM_CSI2C_REGS1,
OMAP3_ISP_IOMEM_CSIPHY1,
OMAP3_ISP_IOMEM_CSI2C_REGS2,
OMAP3_ISP_IOMEM_LAST
};
enum isp_sbl_resource {
OMAP3_ISP_SBL_CSI1_READ = 0x1,
OMAP3_ISP_SBL_CSI1_WRITE = 0x2,
OMAP3_ISP_SBL_CSI2A_WRITE = 0x4,
OMAP3_ISP_SBL_CSI2C_WRITE = 0x8,
OMAP3_ISP_SBL_CCDC_LSC_READ = 0x10,
OMAP3_ISP_SBL_CCDC_WRITE = 0x20,
OMAP3_ISP_SBL_PREVIEW_READ = 0x40,
OMAP3_ISP_SBL_PREVIEW_WRITE = 0x80,
OMAP3_ISP_SBL_RESIZER_READ = 0x100,
OMAP3_ISP_SBL_RESIZER_WRITE = 0x200,
};
enum isp_subclk_resource {
OMAP3_ISP_SUBCLK_CCDC = (1 << 0),
OMAP3_ISP_SUBCLK_H3A = (1 << 1),
OMAP3_ISP_SUBCLK_HIST = (1 << 2),
OMAP3_ISP_SUBCLK_PREVIEW = (1 << 3),
OMAP3_ISP_SUBCLK_RESIZER = (1 << 4),
};
enum isp_interface_type {
ISP_INTERFACE_PARALLEL,
ISP_INTERFACE_CSI2A_PHY2,
ISP_INTERFACE_CCP2B_PHY1,
ISP_INTERFACE_CCP2B_PHY2,
ISP_INTERFACE_CSI2C_PHY1,
};
/* ISP: OMAP 34xx ES 1.0 */
#define ISP_REVISION_1_0 0x10
/* ISP2: OMAP 34xx ES 2.0, 2.1 and 3.0 */
#define ISP_REVISION_2_0 0x20
/* ISP2P: OMAP 36xx */
#define ISP_REVISION_15_0 0xF0
/*
* struct isp_res_mapping - Map ISP io resources to ISP revision.
* @isp_rev: ISP_REVISION_x_x
* @map: bitmap for enum isp_mem_resources
*/
struct isp_res_mapping {
u32 isp_rev;
u32 map;
};
/*
* struct isp_reg - Structure for ISP register values.
* @reg: 32-bit Register address.
* @val: 32-bit Register value.
*/
struct isp_reg {
enum isp_mem_resources mmio_range;
u32 reg;
u32 val;
};
/**
* struct isp_parallel_platform_data - Parallel interface platform data
* @width: Parallel bus width in bits (8, 10, 11 or 12)
* @data_lane_shift: Data lane shifter
* 0 - CAMEXT[13:0] -> CAM[13:0]
* 1 - CAMEXT[13:2] -> CAM[11:0]
* 2 - CAMEXT[13:4] -> CAM[9:0]
* 3 - CAMEXT[13:6] -> CAM[7:0]
* @clk_pol: Pixel clock polarity
* 0 - Non Inverted, 1 - Inverted
* @bridge: CCDC Bridge input control
* ISPCTRL_PAR_BRIDGE_DISABLE - Disable
* ISPCTRL_PAR_BRIDGE_LENDIAN - Little endian
* ISPCTRL_PAR_BRIDGE_BENDIAN - Big endian
*/
struct isp_parallel_platform_data {
unsigned int width;
unsigned int data_lane_shift:2;
unsigned int clk_pol:1;
unsigned int bridge:4;
};
/**
* struct isp_ccp2_platform_data - CCP2 interface platform data
* @strobe_clk_pol: Strobe/clock polarity
* 0 - Non Inverted, 1 - Inverted
* @crc: Enable the cyclic redundancy check
* @ccp2_mode: Enable CCP2 compatibility mode
* 0 - MIPI-CSI1 mode, 1 - CCP2 mode
* @phy_layer: Physical layer selection
* ISPCCP2_CTRL_PHY_SEL_CLOCK - Data/clock physical layer
* ISPCCP2_CTRL_PHY_SEL_STROBE - Data/strobe physical layer
* @vpclk_div: Video port output clock control
*/
struct isp_ccp2_platform_data {
unsigned int strobe_clk_pol:1;
unsigned int crc:1;
unsigned int ccp2_mode:1;
unsigned int phy_layer:1;
unsigned int vpclk_div:2;
};
/**
* struct isp_csi2_platform_data - CSI2 interface platform data
* @crc: Enable the cyclic redundancy check
* @vpclk_div: Video port output clock control
*/
struct isp_csi2_platform_data {
unsigned crc:1;
unsigned vpclk_div:2;
};
struct isp_subdev_i2c_board_info {
struct i2c_board_info *board_info;
int i2c_adapter_id;
};
struct isp_v4l2_subdevs_group {
struct isp_subdev_i2c_board_info *subdevs;
enum isp_interface_type interface;
union {
struct isp_parallel_platform_data parallel;
struct isp_ccp2_platform_data ccp2;
struct isp_csi2_platform_data csi2;
} bus; /* gcc < 4.6.0 chokes on anonymous union initializers */
};
struct isp_platform_data {
struct isp_v4l2_subdevs_group *subdevs;
void (*set_constraints)(struct isp_device *isp, bool enable);
};
struct isp_platform_callback {
u32 (*set_xclk)(struct isp_device *isp, u32 xclk, u8 xclksel);
int (*csiphy_config)(struct isp_csiphy *phy,
struct isp_csiphy_dphy_cfg *dphy,
struct isp_csiphy_lanes_cfg *lanes);
void (*set_pixel_clock)(struct isp_device *isp, unsigned int pixelclk);
};
/*
* struct isp_device - ISP device structure.
* @dev: Device pointer specific to the OMAP3 ISP.
* @revision: Stores current ISP module revision.
* @irq_num: Currently used IRQ number.
* @mmio_base: Array with kernel base addresses for ioremapped ISP register
* regions.
* @mmio_base_phys: Array with physical L4 bus addresses for ISP register
* regions.
* @mmio_size: Array with ISP register regions size in bytes.
* @raw_dmamask: Raw DMA mask
* @stat_lock: Spinlock for handling statistics
* @isp_mutex: Mutex for serializing requests to ISP.
* @has_context: Context has been saved at least once and can be restored.
* @ref_count: Reference count for handling multiple ISP requests.
* @cam_ick: Pointer to camera interface clock structure.
* @cam_mclk: Pointer to camera functional clock structure.
* @dpll4_m5_ck: Pointer to DPLL4 M5 clock structure.
* @csi2_fck: Pointer to camera CSI2 complexIO clock structure.
* @l3_ick: Pointer to OMAP3 L3 bus interface clock.
* @irq: Currently attached ISP ISR callbacks information structure.
* @isp_af: Pointer to current settings for ISP AutoFocus SCM.
* @isp_hist: Pointer to current settings for ISP Histogram SCM.
* @isp_h3a: Pointer to current settings for ISP Auto Exposure and
* White Balance SCM.
* @isp_res: Pointer to current settings for ISP Resizer.
* @isp_prev: Pointer to current settings for ISP Preview.
* @isp_ccdc: Pointer to current settings for ISP CCDC.
* @iommu: Pointer to requested IOMMU instance for ISP.
* @platform_cb: ISP driver callback function pointers for platform code
*
* This structure is used to store the OMAP ISP Information.
*/
struct isp_device {
struct v4l2_device v4l2_dev;
struct media_device media_dev;
struct device *dev;
u32 revision;
/* platform HW resources */
struct isp_platform_data *pdata;
unsigned int irq_num;
void __iomem *mmio_base[OMAP3_ISP_IOMEM_LAST];
unsigned long mmio_base_phys[OMAP3_ISP_IOMEM_LAST];
resource_size_t mmio_size[OMAP3_ISP_IOMEM_LAST];
u64 raw_dmamask;
/* ISP Obj */
spinlock_t stat_lock; /* common lock for statistic drivers */
struct mutex isp_mutex; /* For handling ref_count field */
int has_context;
int ref_count;
unsigned int autoidle;
u32 xclk_divisor[2]; /* Two clocks, a and b. */
#define ISP_CLK_CAM_ICK 0
#define ISP_CLK_CAM_MCLK 1
#define ISP_CLK_DPLL4_M5_CK 2
#define ISP_CLK_CSI2_FCK 3
#define ISP_CLK_L3_ICK 4
struct clk *clock[5];
/* ISP modules */
struct ispstat isp_af;
struct ispstat isp_aewb;
struct ispstat isp_hist;
struct isp_res_device isp_res;
struct isp_prev_device isp_prev;
struct isp_ccdc_device isp_ccdc;
struct isp_csi2_device isp_csi2a;
struct isp_csi2_device isp_csi2c;
struct isp_ccp2_device isp_ccp2;
struct isp_csiphy isp_csiphy1;
struct isp_csiphy isp_csiphy2;
unsigned int sbl_resources;
unsigned int subclk_resources;
struct iommu *iommu;
struct isp_platform_callback platform_cb;
};
#define v4l2_dev_to_isp_device(dev) \
container_of(dev, struct isp_device, v4l2_dev)
void omap3isp_hist_dma_done(struct isp_device *isp);
void omap3isp_flush(struct isp_device *isp);
int omap3isp_module_sync_idle(struct media_entity *me, wait_queue_head_t *wait,
atomic_t *stopping);
int omap3isp_module_sync_is_stopping(wait_queue_head_t *wait,
atomic_t *stopping);
int omap3isp_pipeline_set_stream(struct isp_pipeline *pipe,
enum isp_pipeline_stream_state state);
void omap3isp_configure_bridge(struct isp_device *isp,
enum ccdc_input_entity input,
const struct isp_parallel_platform_data *pdata);
#define ISP_XCLK_NONE -1
#define ISP_XCLK_A 0
#define ISP_XCLK_B 1
struct isp_device *omap3isp_get(struct isp_device *isp);
void omap3isp_put(struct isp_device *isp);
void omap3isp_print_status(struct isp_device *isp);
void omap3isp_sbl_enable(struct isp_device *isp, enum isp_sbl_resource res);
void omap3isp_sbl_disable(struct isp_device *isp, enum isp_sbl_resource res);
void omap3isp_subclk_enable(struct isp_device *isp,
enum isp_subclk_resource res);
void omap3isp_subclk_disable(struct isp_device *isp,
enum isp_subclk_resource res);
int omap3isp_pipeline_pm_use(struct media_entity *entity, int use);
int omap3isp_register_entities(struct platform_device *pdev,
struct v4l2_device *v4l2_dev);
void omap3isp_unregister_entities(struct platform_device *pdev);
/*
* isp_reg_readl - Read value of an OMAP3 ISP register
* @dev: Device pointer specific to the OMAP3 ISP.
* @isp_mmio_range: Range to which the register offset refers to.
* @reg_offset: Register offset to read from.
*
* Returns an unsigned 32 bit value with the required register contents.
*/
static inline
u32 isp_reg_readl(struct isp_device *isp, enum isp_mem_resources isp_mmio_range,
u32 reg_offset)
{
return __raw_readl(isp->mmio_base[isp_mmio_range] + reg_offset);
}
/*
* isp_reg_writel - Write value to an OMAP3 ISP register
* @dev: Device pointer specific to the OMAP3 ISP.
* @reg_value: 32 bit value to write to the register.
* @isp_mmio_range: Range to which the register offset refers to.
* @reg_offset: Register offset to write into.
*/
static inline
void isp_reg_writel(struct isp_device *isp, u32 reg_value,
enum isp_mem_resources isp_mmio_range, u32 reg_offset)
{
__raw_writel(reg_value
|