drivers/media/video/omap3isp/isp.h

   1 /*
   2  * isp.h
   3  *
   4  * TI OMAP3 ISP - Core
   5  *
   6  * Copyright (C) 2009-2010 Nokia Corporation
   7  * Copyright (C) 2009 Texas Instruments, Inc.
   8  *
   9  * Contacts: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
  10  *           Sakari Ailus <sakari.ailus@iki.fi>
  11  *
  12  * This program is free software; you can redistribute it and/or modify
  13  * it under the terms of the GNU General Public License version 2 as
  14  * published by the Free Software Foundation.
  15  *
  16  * This program is distributed in the hope that it will be useful, but
  17  * WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  19  * General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU General Public License
  22  * along with this program; if not, write to the Free Software
  23  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
  24  * 02110-1301 USA
  25  */
  26
  27 #ifndef OMAP3_ISP_CORE_H
  28 #define OMAP3_ISP_CORE_H
  29
  30 #include <media/v4l2-device.h>
  31 #include <linux/device.h>
  32 #include <linux/io.h>
  33 #include <linux/platform_device.h>
  34 #include <linux/wait.h>
  35 #include <plat/iommu.h>
  36 #include <plat/iovmm.h>
  37
  38 #include "ispstat.h"
  39 #include "ispccdc.h"
  40 #include "ispreg.h"
  41 #include "ispresizer.h"
  42 #include "isppreview.h"
  43 #include "ispcsiphy.h"
  44 #include "ispcsi2.h"
  45 #include "ispccp2.h"
  46
  47 #define IOMMU_FLAG (IOVMF_ENDIAN_LITTLE | IOVMF_ELSZ_8)
  48
  49 #define ISP_TOK_TERM            0xFFFFFFFF      /*
  50                                                  * terminating token for ISP
  51                                                  * modules reg list
  52                                                  */
  53 #define to_isp_device(ptr_module)                               \
  54         container_of(ptr_module, struct isp_device, isp_##ptr_module)
  55 #define to_device(ptr_module)                                           \
  56         (to_isp_device(ptr_module)->dev)
  57
  58 enum isp_mem_resources {
  59         OMAP3_ISP_IOMEM_MAIN,
  60         OMAP3_ISP_IOMEM_CCP2,
  61         OMAP3_ISP_IOMEM_CCDC,
  62         OMAP3_ISP_IOMEM_HIST,
  63         OMAP3_ISP_IOMEM_H3A,
  64         OMAP3_ISP_IOMEM_PREV,
  65         OMAP3_ISP_IOMEM_RESZ,
  66         OMAP3_ISP_IOMEM_SBL,
  67         OMAP3_ISP_IOMEM_CSI2A_REGS1,
  68         OMAP3_ISP_IOMEM_CSIPHY2,
  69         OMAP3_ISP_IOMEM_CSI2A_REGS2,
  70         OMAP3_ISP_IOMEM_CSI2C_REGS1,
  71         OMAP3_ISP_IOMEM_CSIPHY1,
  72         OMAP3_ISP_IOMEM_CSI2C_REGS2,
  73         OMAP3_ISP_IOMEM_LAST
  74 };
  75
  76 enum isp_sbl_resource {
  77         OMAP3_ISP_SBL_CSI1_READ         = 0x1,
  78         OMAP3_ISP_SBL_CSI1_WRITE        = 0x2,
  79         OMAP3_ISP_SBL_CSI2A_WRITE       = 0x4,
  80         OMAP3_ISP_SBL_CSI2C_WRITE       = 0x8,
  81         OMAP3_ISP_SBL_CCDC_LSC_READ     = 0x10,
  82         OMAP3_ISP_SBL_CCDC_WRITE        = 0x20,
  83         OMAP3_ISP_SBL_PREVIEW_READ      = 0x40,
  84         OMAP3_ISP_SBL_PREVIEW_WRITE     = 0x80,
  85         OMAP3_ISP_SBL_RESIZER_READ      = 0x100,
  86         OMAP3_ISP_SBL_RESIZER_WRITE     = 0x200,
  87 };
  88
  89 enum isp_subclk_resource {
  90         OMAP3_ISP_SUBCLK_CCDC           = (1 << 0),
  91         OMAP3_ISP_SUBCLK_H3A            = (1 << 1),
  92         OMAP3_ISP_SUBCLK_HIST           = (1 << 2),
  93         OMAP3_ISP_SUBCLK_PREVIEW        = (1 << 3),
  94         OMAP3_ISP_SUBCLK_RESIZER        = (1 << 4),
  95 };
  96
  97 enum isp_interface_type {
  98         ISP_INTERFACE_PARALLEL,
  99         ISP_INTERFACE_CSI2A_PHY2,
 100         ISP_INTERFACE_CCP2B_PHY1,
 101         ISP_INTERFACE_CCP2B_PHY2,
 102         ISP_INTERFACE_CSI2C_PHY1,
 103 };
 104
 105 /* ISP: OMAP 34xx ES 1.0 */
 106 #define ISP_REVISION_1_0                0x10
 107 /* ISP2: OMAP 34xx ES 2.0, 2.1 and 3.0 */
 108 #define ISP_REVISION_2_0                0x20
 109 /* ISP2P: OMAP 36xx */
 110 #define ISP_REVISION_15_0               0xF0
 111
 112 /*
 113  * struct isp_res_mapping - Map ISP io resources to ISP revision.
 114  * @isp_rev: ISP_REVISION_x_x
 115  * @map: bitmap for enum isp_mem_resources
 116  */
 117 struct isp_res_mapping {
 118         u32 isp_rev;
 119         u32 map;
 120 };
 121
 122 /*
 123  * struct isp_reg - Structure for ISP register values.
 124  * @reg: 32-bit Register address.
 125  * @val: 32-bit Register value.
 126  */
 127 struct isp_reg {
 128         enum isp_mem_resources mmio_range;
 129         u32 reg;
 130         u32 val;
 131 };
 132
 133 /**
 134  * struct isp_parallel_platform_data - Parallel interface platform data
 135  * @width: Parallel bus width in bits (8, 10, 11 or 12)
 136  * @data_lane_shift: Data lane shifter
 137  *              0 - CAMEXT[13:0] -> CAM[13:0]
 138  *              1 - CAMEXT[13:2] -> CAM[11:0]
 139  *              2 - CAMEXT[13:4] -> CAM[9:0]
 140  *              3 - CAMEXT[13:6] -> CAM[7:0]
 141  * @clk_pol: Pixel clock polarity
 142  *              0 - Non Inverted, 1 - Inverted
 143  * @bridge: CCDC Bridge input control
 144  *              ISPCTRL_PAR_BRIDGE_DISABLE - Disable
 145  *              ISPCTRL_PAR_BRIDGE_LENDIAN - Little endian
 146  *              ISPCTRL_PAR_BRIDGE_BENDIAN - Big endian
 147  */
 148 struct isp_parallel_platform_data {
 149         unsigned int width;
 150         unsigned int data_lane_shift:2;
 151         unsigned int clk_pol:1;
 152         unsigned int bridge:4;
 153 };
 154
 155 /**
 156  * struct isp_ccp2_platform_data - CCP2 interface platform data
 157  * @strobe_clk_pol: Strobe/clock polarity
 158  *              0 - Non Inverted, 1 - Inverted
 159  * @crc: Enable the cyclic redundancy check
 160  * @ccp2_mode: Enable CCP2 compatibility mode
 161  *              0 - MIPI-CSI1 mode, 1 - CCP2 mode
 162  * @phy_layer: Physical layer selection
 163  *              ISPCCP2_CTRL_PHY_SEL_CLOCK - Data/clock physical layer
 164  *              ISPCCP2_CTRL_PHY_SEL_STROBE - Data/strobe physical layer
 165  * @vpclk_div: Video port output clock control
 166  */
 167 struct isp_ccp2_platform_data {
 168         unsigned int strobe_clk_pol:1;
 169         unsigned int crc:1;
 170         unsigned int ccp2_mode:1;
 171         unsigned int phy_layer:1;
 172         unsigned int vpclk_div:2;
 173 };
 174
 175 /**
 176  * struct isp_csi2_platform_data - CSI2 interface platform data
 177  * @crc: Enable the cyclic redundancy check
 178  * @vpclk_div: Video port output clock control
 179  */
 180 struct isp_csi2_platform_data {
 181         unsigned crc:1;
 182         unsigned vpclk_div:2;
 183 };
 184
 185 struct isp_subdev_i2c_board_info {
 186         struct i2c_board_info *board_info;
 187         int i2c_adapter_id;
 188 };
 189
 190 struct isp_v4l2_subdevs_group {
 191         struct isp_subdev_i2c_board_info *subdevs;
 192         enum isp_interface_type interface;
 193         union {
 194                 struct isp_parallel_platform_data parallel;
 195                 struct isp_ccp2_platform_data ccp2;
 196                 struct isp_csi2_platform_data csi2;
 197         } bus; /* gcc < 4.6.0 chokes on anonymous union initializers */
 198 };
 199
 200 struct isp_platform_data {
 201         struct isp_v4l2_subdevs_group *subdevs;
 202         void (*set_constraints)(struct isp_device *isp, bool enable);
 203 };
 204
 205 struct isp_platform_callback {
 206         u32 (*set_xclk)(struct isp_device *isp, u32 xclk, u8 xclksel);
 207         int (*csiphy_config)(struct isp_csiphy *phy,
 208                              struct isp_csiphy_dphy_cfg *dphy,
 209                              struct isp_csiphy_lanes_cfg *lanes);
 210         void (*set_pixel_clock)(struct isp_device *isp, unsigned int pixelclk);
 211 };
 212
 213 /*
 214  * struct isp_device - ISP device structure.
 215  * @dev: Device pointer specific to the OMAP3 ISP.
 216  * @revision: Stores current ISP module revision.
 217  * @irq_num: Currently used IRQ number.
 218  * @mmio_base: Array with kernel base addresses for ioremapped ISP register
 219  *             regions.
 220  * @mmio_base_phys: Array with physical L4 bus addresses for ISP register
 221  *                  regions.
 222  * @mmio_size: Array with ISP register regions size in bytes.
 223  * @raw_dmamask: Raw DMA mask
 224  * @stat_lock: Spinlock for handling statistics
 225  * @isp_mutex: Mutex for serializing requests to ISP.
 226  * @has_context: Context has been saved at least once and can be restored.
 227  * @ref_count: Reference count for handling multiple ISP requests.
 228  * @cam_ick: Pointer to camera interface clock structure.
 229  * @cam_mclk: Pointer to camera functional clock structure.
 230  * @dpll4_m5_ck: Pointer to DPLL4 M5 clock structure.
 231  * @csi2_fck: Pointer to camera CSI2 complexIO clock structure.
 232  * @l3_ick: Pointer to OMAP3 L3 bus interface clock.
 233  * @irq: Currently attached ISP ISR callbacks information structure.
 234  * @isp_af: Pointer to current settings for ISP AutoFocus SCM.
 235  * @isp_hist: Pointer to current settings for ISP Histogram SCM.
 236  * @isp_h3a: Pointer to current settings for ISP Auto Exposure and
 237  *           White Balance SCM.
 238  * @isp_res: Pointer to current settings for ISP Resizer.
 239  * @isp_prev: Pointer to current settings for ISP Preview.
 240  * @isp_ccdc: Pointer to current settings for ISP CCDC.
 241  * @iommu: Pointer to requested IOMMU instance for ISP.
 242  * @platform_cb: ISP driver callback function pointers for platform code
 243  *
 244  * This structure is used to store the OMAP ISP Information.
 245  */
 246 struct isp_device {
 247         struct v4l2_device v4l2_dev;
 248         struct media_device media_dev;
 249         struct device *dev;
 250         u32 revision;
 251
 252         /* platform HW resources */
 253         struct isp_platform_data *pdata;
 254         unsigned int irq_num;
 255
 256         void __iomem *mmio_base[OMAP3_ISP_IOMEM_LAST];
 257         unsigned long mmio_base_phys[OMAP3_ISP_IOMEM_LAST];
 258         resource_size_t mmio_size[OMAP3_ISP_IOMEM_LAST];
 259
 260         u64 raw_dmamask;
 261
 262         /* ISP Obj */
 263         spinlock_t stat_lock;   /* common lock for statistic drivers */
 264         struct mutex isp_mutex; /* For handling ref_count field */
 265         int has_context;
 266         int ref_count;
 267         unsigned int autoidle;
 268         u32 xclk_divisor[2];    /* Two clocks, a and b. */
 269 #define ISP_CLK_CAM_ICK         0
 270 #define ISP_CLK_CAM_MCLK        1
 271 #define ISP_CLK_DPLL4_M5_CK     2
 272 #define ISP_CLK_CSI2_FCK        3
 273 #define ISP_CLK_L3_ICK          4
 274         struct clk *clock[5];
 275
 276         /* ISP modules */
 277         struct ispstat isp_af;
 278         struct ispstat isp_aewb;
 279         struct ispstat isp_hist;
 280         struct isp_res_device isp_res;
 281         struct isp_prev_device isp_prev;
 282         struct isp_ccdc_device isp_ccdc;
 283         struct isp_csi2_device isp_csi2a;
 284         struct isp_csi2_device isp_csi2c;
 285         struct isp_ccp2_device isp_ccp2;
 286         struct isp_csiphy isp_csiphy1;
 287         struct isp_csiphy isp_csiphy2;
 288
 289         unsigned int sbl_resources;
 290         unsigned int subclk_resources;
 291
 292         struct iommu *iommu;
 293
 294         struct isp_platform_callback platform_cb;
 295 };
 296
 297 #define v4l2_dev_to_isp_device(dev) \
 298         container_of(dev, struct isp_device, v4l2_dev)
 299
 300 void omap3isp_hist_dma_done(struct isp_device *isp);
 301
 302 void omap3isp_flush(struct isp_device *isp);
 303
 304 int omap3isp_module_sync_idle(struct media_entity *me, wait_queue_head_t *wait,
 305                               atomic_t *stopping);
 306
 307 int omap3isp_module_sync_is_stopping(wait_queue_head_t *wait,
 308                                      atomic_t *stopping);
 309
 310 int omap3isp_pipeline_set_stream(struct isp_pipeline *pipe,
 311                                  enum isp_pipeline_stream_state state);
 312 void omap3isp_configure_bridge(struct isp_device *isp,
 313                                enum ccdc_input_entity input,
 314                                const struct isp_parallel_platform_data *pdata);
 315
 316 #define ISP_XCLK_NONE                   -1
 317 #define ISP_XCLK_A                      0
 318 #define ISP_XCLK_B                      1
 319
 320 struct isp_device *omap3isp_get(struct isp_device *isp);
 321 void omap3isp_put(struct isp_device *isp);
 322
 323 void omap3isp_print_status(struct isp_device *isp);
 324
 325 void omap3isp_sbl_enable(struct isp_device *isp, enum isp_sbl_resource res);
 326 void omap3isp_sbl_disable(struct isp_device *isp, enum isp_sbl_resource res);
 327
 328 void omap3isp_subclk_enable(struct isp_device *isp,
 329                             enum isp_subclk_resource res);
 330 void omap3isp_subclk_disable(struct isp_device *isp,
 331                              enum isp_subclk_resource res);
 332
 333 int omap3isp_pipeline_pm_use(struct media_entity *entity, int use);
 334
 335 int omap3isp_register_entities(struct platform_device *pdev,
 336                                struct v4l2_device *v4l2_dev);
 337 void omap3isp_unregister_entities(struct platform_device *pdev);
 338
 339 /*
 340  * isp_reg_readl - Read value of an OMAP3 ISP register
 341  * @dev: Device pointer specific to the OMAP3 ISP.
 342  * @isp_mmio_range: Range to which the register offset refers to.
 343  * @reg_offset: Register offset to read from.
 344  *
 345  * Returns an unsigned 32 bit value with the required register contents.
 346  */
 347 static inline
 348 u32 isp_reg_readl(struct isp_device *isp, enum isp_mem_resources isp_mmio_range,
 349                   u32 reg_offset)
 350 {
 351         return __raw_readl(isp->mmio_base[isp_mmio_range] + reg_offset);
 352 }
 353
 354 /*
 355  * isp_reg_writel - Write value to an OMAP3 ISP register
 356  * @dev: Device pointer specific to the OMAP3 ISP.
 357  * @reg_value: 32 bit value to write to the register.
 358  * @isp_mmio_range: Range to which the register offset refers to.
 359  * @reg_offset: Register offset to write into.
 360  */
 361 static inline
 362 void isp_reg_writel(struct isp_device *isp, u32 reg_value,
 363                     enum isp_mem_resources isp_mmio_range, u32 reg_offset)
 364 {
 365         __raw_writel(reg_value, isp->mmio_base[isp_mmio_range] + reg_offset);
 366 }
 367
 368 /*
 369  * isp_reg_and - Clear individual bits in an OMAP3 ISP register
 370  * @dev: Device pointer specific to the OMAP3 ISP.
 371  * @mmio_range: Range to which the register offset refers to.
 372  * @reg: Register offset to work on.
 373  * @clr_bits: 32 bit value which would be cleared in the register.
 374  */
 375 static inline
 376 void isp_reg_clr(struct isp_device *isp, enum isp_mem_resources mmio_range,
 377                  u32 reg, u32 clr_bits)
 378 {
 379         u32 v = isp_reg_readl(isp, mmio_range, reg);
 380
 381         isp_reg_writel(isp, v & ~clr_bits, mmio_range, reg);
 382 }
 383
 384 /*
 385  * isp_reg_set - Set individual bits in an OMAP3 ISP register
 386  * @dev: Device pointer specific to the OMAP3 ISP.
 387  * @mmio_range: Range to which the register offset refers to.
 388  * @reg: Register offset to work on.
 389  * @set_bits: 32 bit value which would be set in the register.
 390  */
 391 static inline
 392 void isp_reg_set(struct isp_device *isp, enum isp_mem_resources mmio_range,
 393                  u32 reg, u32 set_bits)
 394 {
 395         u32 v = isp_reg_readl(isp, mmio_range, reg);
 396
 397         isp_reg_writel(isp, v | set_bits, mmio_range, reg);
 398 }
 399
 400 /*
 401  * isp_reg_clr_set - Clear and set invidial bits in an OMAP3 ISP register
 402  * @dev: Device pointer specific to the OMAP3 ISP.
 403  * @mmio_range: Range to which the register offset refers to.
 404  * @reg: Register offset to work on.
 405  * @clr_bits: 32 bit value which would be cleared in the register.
 406  * @set_bits: 32 bit value which would be set in the register.
 407  *
 408  * The clear operation is done first, and then the set operation.
 409  */
 410 static inline
 411 void isp_reg_clr_set(struct isp_device *isp, enum isp_mem_resources mmio_range,
 412                      u32 reg, u32 clr_bits, u32 set_bits)
 413 {
 414         u32 v = isp_reg_readl(isp, mmio_range, reg);
 415
 416         isp_reg_writel(isp, (v & ~clr_bits) | set_bits, mmio_range, reg);
 417 }
 418
 419 static inline enum v4l2_buf_type
 420 isp_pad_buffer_type(const struct v4l2_subdev *subdev, int pad)
 421 {
 422         if (pad >= subdev->entity.num_pads)
 423                 return 0;
 424
 425         if (subdev->entity.pads[pad].flags & MEDIA_PAD_FL_SINK)
 426                 return V4L2_BUF_TYPE_VIDEO_OUTPUT;
 427         else
 428                 return V4L2_BUF_TYPE_VIDEO_CAPTURE;
 429 }
 430
 431 #endif  /* OMAP3_ISP_CORE_H */