diff options
Diffstat (limited to 'drivers/media/video/omap3isp/isp.h')
| -rw-r--r-- | drivers/media/video/omap3isp/isp.h | 431 |
1 files changed, 431 insertions, 0 deletions
diff --git a/drivers/media/video/omap3isp/isp.h b/drivers/media/video/omap3isp/isp.h new file mode 100644 index 000000000000..2620c405f5e4 --- /dev/null +++ b/drivers/media/video/omap3isp/isp.h @@ -0,0 +1,431 @@ +/* + * 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 + * @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 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 */ + bool needs_reset; + 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, + unsigned int shift); + +#define ISP_XCLK_NONE 0 +#define ISP_XCLK_A 1 +#define ISP_XCLK_B 2 + +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, isp->mmio_base[isp_mmio_range] + reg_offset); +} + +/* + * isp_reg_and - Clear individual bits in an OMAP3 ISP register + * @dev: Device pointer specific to the OMAP3 ISP. + * @mmio_range: Range to which the register offset refers to. + * @reg: Register offset to work on. + * @clr_bits: 32 bit value which would be cleared in the register. + */ +static inline +void isp_reg_clr(struct isp_device *isp, enum isp_mem_resources mmio_range, + u32 reg, u32 clr_bits) +{ + u32 v = isp_reg_readl(isp, mmio_range, reg); + + isp_reg_writel(isp, v & ~clr_bits, mmio_range, reg); +} + +/* + * isp_reg_set - Set individual bits in an OMAP3 ISP register + * @dev: Device pointer specific to the OMAP3 ISP. + * @mmio_range: Range to which the register offset refers to. + * @reg: Register offset to work on. + * @set_bits: 32 bit value which would be set in the register. + */ +static inline +void isp_reg_set(struct isp_device *isp, enum isp_mem_resources mmio_range, + u32 reg, u32 set_bits) +{ + u32 v = isp_reg_readl(isp, mmio_range, reg); + + isp_reg_writel(isp, v | set_bits, mmio_range, reg); +} + +/* + * isp_reg_clr_set - Clear and set invidial bits in an OMAP3 ISP register + * @dev: Device pointer specific to the OMAP3 ISP. + * @mmio_range: Range to which the register offset refers to. + * @reg: Register offset to work on. + * @clr_bits: 32 bit value which would be cleared in the register. + * @set_bits: 32 bit value which would be set in the register. + * + * The clear operation is done first, and then the set operation. + */ +static inline +void isp_reg_clr_set(struct isp_device *isp, enum isp_mem_resources mmio_range, + u32 reg, u32 clr_bits, u32 set_bits) +{ + u32 v = isp_reg_readl(isp, mmio_range, reg); + + isp_reg_writel(isp, (v & ~clr_bits) | set_bits, mmio_range, reg); +} + +static inline enum v4l2_buf_type +isp_pad_buffer_type(const struct v4l2_subdev *subdev, int pad) +{ + if (pad >= subdev->entity.num_pads) + return 0; + + if (subdev->entity.pads[pad].flags & MEDIA_PAD_FL_SINK) + return V4L2_BUF_TYPE_VIDEO_OUTPUT; + else + return V4L2_BUF_TYPE_VIDEO_CAPTURE; +} + +#endif /* OMAP3_ISP_CORE_H */ |