1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 /* 3 * isp.h 4 * 5 * TI OMAP3 ISP - Core 6 * 7 * Copyright (C) 2009-2010 Nokia Corporation 8 * Copyright (C) 2009 Texas Instruments, Inc. 9 * 10 * Contacts: Laurent Pinchart <laurent.pinchart@ideasonboard.com> 11 * Sakari Ailus <sakari.ailus@iki.fi> 12 */ 13 14 #ifndef OMAP3_ISP_CORE_H 15 #define OMAP3_ISP_CORE_H 16 17 #include <media/media-entity.h> 18 #include <media/v4l2-async.h> 19 #include <media/v4l2-device.h> 20 #include <linux/clk-provider.h> 21 #include <linux/device.h> 22 #include <linux/io.h> 23 #include <linux/platform_device.h> 24 #include <linux/wait.h> 25 26 #include "omap3isp.h" 27 #include "ispstat.h" 28 #include "ispccdc.h" 29 #include "ispreg.h" 30 #include "ispresizer.h" 31 #include "isppreview.h" 32 #include "ispcsiphy.h" 33 #include "ispcsi2.h" 34 #include "ispccp2.h" 35 36 #define ISP_TOK_TERM 0xFFFFFFFF /* 37 * terminating token for ISP 38 * modules reg list 39 */ 40 #define to_isp_device(ptr_module) \ 41 container_of(ptr_module, struct isp_device, isp_##ptr_module) 42 #define to_device(ptr_module) \ 43 (to_isp_device(ptr_module)->dev) 44 45 enum isp_mem_resources { 46 OMAP3_ISP_IOMEM_MAIN, 47 OMAP3_ISP_IOMEM_CCP2, 48 OMAP3_ISP_IOMEM_CCDC, 49 OMAP3_ISP_IOMEM_HIST, 50 OMAP3_ISP_IOMEM_H3A, 51 OMAP3_ISP_IOMEM_PREV, 52 OMAP3_ISP_IOMEM_RESZ, 53 OMAP3_ISP_IOMEM_SBL, 54 OMAP3_ISP_IOMEM_CSI2A_REGS1, 55 OMAP3_ISP_IOMEM_CSIPHY2, 56 OMAP3_ISP_IOMEM_CSI2A_REGS2, 57 OMAP3_ISP_IOMEM_CSI2C_REGS1, 58 OMAP3_ISP_IOMEM_CSIPHY1, 59 OMAP3_ISP_IOMEM_CSI2C_REGS2, 60 OMAP3_ISP_IOMEM_LAST 61 }; 62 63 enum isp_sbl_resource { 64 OMAP3_ISP_SBL_CSI1_READ = 0x1, 65 OMAP3_ISP_SBL_CSI1_WRITE = 0x2, 66 OMAP3_ISP_SBL_CSI2A_WRITE = 0x4, 67 OMAP3_ISP_SBL_CSI2C_WRITE = 0x8, 68 OMAP3_ISP_SBL_CCDC_LSC_READ = 0x10, 69 OMAP3_ISP_SBL_CCDC_WRITE = 0x20, 70 OMAP3_ISP_SBL_PREVIEW_READ = 0x40, 71 OMAP3_ISP_SBL_PREVIEW_WRITE = 0x80, 72 OMAP3_ISP_SBL_RESIZER_READ = 0x100, 73 OMAP3_ISP_SBL_RESIZER_WRITE = 0x200, 74 }; 75 76 enum isp_subclk_resource { 77 OMAP3_ISP_SUBCLK_CCDC = (1 << 0), 78 OMAP3_ISP_SUBCLK_AEWB = (1 << 1), 79 OMAP3_ISP_SUBCLK_AF = (1 << 2), 80 OMAP3_ISP_SUBCLK_HIST = (1 << 3), 81 OMAP3_ISP_SUBCLK_PREVIEW = (1 << 4), 82 OMAP3_ISP_SUBCLK_RESIZER = (1 << 5), 83 }; 84 85 /* ISP: OMAP 34xx ES 1.0 */ 86 #define ISP_REVISION_1_0 0x10 87 /* ISP2: OMAP 34xx ES 2.0, 2.1 and 3.0 */ 88 #define ISP_REVISION_2_0 0x20 89 /* ISP2P: OMAP 36xx */ 90 #define ISP_REVISION_15_0 0xF0 91 92 #define ISP_PHY_TYPE_3430 0 93 #define ISP_PHY_TYPE_3630 1 94 95 struct regmap; 96 97 /* 98 * struct isp_res_mapping - Map ISP io resources to ISP revision. 99 * @isp_rev: ISP_REVISION_x_x 100 * @offset: register offsets of various ISP sub-blocks 101 * @phy_type: ISP_PHY_TYPE_{3430,3630} 102 */ 103 struct isp_res_mapping { 104 u32 isp_rev; 105 u32 offset[OMAP3_ISP_IOMEM_LAST]; 106 u32 phy_type; 107 }; 108 109 /* 110 * struct isp_reg - Structure for ISP register values. 111 * @reg: 32-bit Register address. 112 * @val: 32-bit Register value. 113 */ 114 struct isp_reg { 115 enum isp_mem_resources mmio_range; 116 u32 reg; 117 u32 val; 118 }; 119 120 enum isp_xclk_id { 121 ISP_XCLK_A, 122 ISP_XCLK_B, 123 }; 124 125 struct isp_xclk { 126 struct isp_device *isp; 127 struct clk_hw hw; 128 struct clk *clk; 129 enum isp_xclk_id id; 130 131 spinlock_t lock; /* Protects enabled and divider */ 132 bool enabled; 133 unsigned int divider; 134 }; 135 136 /* 137 * struct isp_device - ISP device structure. 138 * @dev: Device pointer specific to the OMAP3 ISP. 139 * @revision: Stores current ISP module revision. 140 * @irq_num: Currently used IRQ number. 141 * @mmio_base: Array with kernel base addresses for ioremapped ISP register 142 * regions. 143 * @mmio_hist_base_phys: Physical L4 bus address for ISP hist block register 144 * region. 145 * @syscon: Regmap for the syscon register space 146 * @syscon_offset: Offset of the CSIPHY control register in syscon 147 * @phy_type: ISP_PHY_TYPE_{3430,3630} 148 * @mapping: IOMMU mapping 149 * @stat_lock: Spinlock for handling statistics 150 * @isp_mutex: Mutex for serializing requests to ISP. 151 * @stop_failure: Indicates that an entity failed to stop. 152 * @crashed: Crashed ent_enum 153 * @has_context: Context has been saved at least once and can be restored. 154 * @ref_count: Reference count for handling multiple ISP requests. 155 * @cam_ick: Pointer to camera interface clock structure. 156 * @cam_mclk: Pointer to camera functional clock structure. 157 * @csi2_fck: Pointer to camera CSI2 complexIO clock structure. 158 * @l3_ick: Pointer to OMAP3 L3 bus interface clock. 159 * @xclks: External clocks provided by the ISP 160 * @irq: Currently attached ISP ISR callbacks information structure. 161 * @isp_af: Pointer to current settings for ISP AutoFocus SCM. 162 * @isp_hist: Pointer to current settings for ISP Histogram SCM. 163 * @isp_h3a: Pointer to current settings for ISP Auto Exposure and 164 * White Balance SCM. 165 * @isp_res: Pointer to current settings for ISP Resizer. 166 * @isp_prev: Pointer to current settings for ISP Preview. 167 * @isp_ccdc: Pointer to current settings for ISP CCDC. 168 * @platform_cb: ISP driver callback function pointers for platform code 169 * 170 * This structure is used to store the OMAP ISP Information. 171 */ 172 struct isp_device { 173 struct v4l2_device v4l2_dev; 174 struct v4l2_async_notifier notifier; 175 struct media_device media_dev; 176 struct device *dev; 177 u32 revision; 178 179 /* platform HW resources */ 180 unsigned int irq_num; 181 182 void __iomem *mmio_base[OMAP3_ISP_IOMEM_LAST]; 183 unsigned long mmio_hist_base_phys; 184 struct regmap *syscon; 185 u32 syscon_offset; 186 u32 phy_type; 187 188 struct dma_iommu_mapping *mapping; 189 190 /* ISP Obj */ 191 spinlock_t stat_lock; /* common lock for statistic drivers */ 192 struct mutex isp_mutex; /* For handling ref_count field */ 193 bool stop_failure; 194 struct media_entity_enum crashed; 195 int has_context; 196 int ref_count; 197 unsigned int autoidle; 198 #define ISP_CLK_CAM_ICK 0 199 #define ISP_CLK_CAM_MCLK 1 200 #define ISP_CLK_CSI2_FCK 2 201 #define ISP_CLK_L3_ICK 3 202 struct clk *clock[4]; 203 struct isp_xclk xclks[2]; 204 205 /* ISP modules */ 206 struct ispstat isp_af; 207 struct ispstat isp_aewb; 208 struct ispstat isp_hist; 209 struct isp_res_device isp_res; 210 struct isp_prev_device isp_prev; 211 struct isp_ccdc_device isp_ccdc; 212 struct isp_csi2_device isp_csi2a; 213 struct isp_csi2_device isp_csi2c; 214 struct isp_ccp2_device isp_ccp2; 215 struct isp_csiphy isp_csiphy1; 216 struct isp_csiphy isp_csiphy2; 217 218 unsigned int sbl_resources; 219 unsigned int subclk_resources; 220 }; 221 222 struct isp_async_subdev { 223 struct v4l2_async_connection asd; 224 struct isp_bus_cfg bus; 225 }; 226 227 static inline struct isp_bus_cfg * v4l2_subdev_to_bus_cfg(struct v4l2_subdev * sd)228 v4l2_subdev_to_bus_cfg(struct v4l2_subdev *sd) 229 { 230 struct v4l2_async_connection *asc; 231 232 asc = v4l2_async_connection_unique(sd); 233 if (!asc) 234 return NULL; 235 236 return &container_of(asc, struct isp_async_subdev, asd)->bus; 237 } 238 239 #define v4l2_dev_to_isp_device(dev) \ 240 container_of(dev, struct isp_device, v4l2_dev) 241 242 void omap3isp_hist_dma_done(struct isp_device *isp); 243 244 void omap3isp_flush(struct isp_device *isp); 245 246 int omap3isp_module_sync_idle(struct media_entity *me, wait_queue_head_t *wait, 247 atomic_t *stopping); 248 249 int omap3isp_module_sync_is_stopping(wait_queue_head_t *wait, 250 atomic_t *stopping); 251 252 int omap3isp_pipeline_set_stream(struct isp_pipeline *pipe, 253 enum isp_pipeline_stream_state state); 254 void omap3isp_pipeline_cancel_stream(struct isp_pipeline *pipe); 255 void omap3isp_configure_bridge(struct isp_device *isp, 256 enum ccdc_input_entity input, 257 const struct isp_parallel_cfg *buscfg, 258 unsigned int shift, unsigned int bridge); 259 260 struct isp_device *omap3isp_get(struct isp_device *isp); 261 void omap3isp_put(struct isp_device *isp); 262 263 void omap3isp_print_status(struct isp_device *isp); 264 265 void omap3isp_sbl_enable(struct isp_device *isp, enum isp_sbl_resource res); 266 void omap3isp_sbl_disable(struct isp_device *isp, enum isp_sbl_resource res); 267 268 void omap3isp_subclk_enable(struct isp_device *isp, 269 enum isp_subclk_resource res); 270 void omap3isp_subclk_disable(struct isp_device *isp, 271 enum isp_subclk_resource res); 272 273 int omap3isp_register_entities(struct platform_device *pdev, 274 struct v4l2_device *v4l2_dev); 275 void omap3isp_unregister_entities(struct platform_device *pdev); 276 277 /* 278 * isp_reg_readl - Read value of an OMAP3 ISP register 279 * @isp: Device pointer specific to the OMAP3 ISP. 280 * @isp_mmio_range: Range to which the register offset refers to. 281 * @reg_offset: Register offset to read from. 282 * 283 * Returns an unsigned 32 bit value with the required register contents. 284 */ 285 static inline isp_reg_readl(struct isp_device * isp,enum isp_mem_resources isp_mmio_range,u32 reg_offset)286 u32 isp_reg_readl(struct isp_device *isp, enum isp_mem_resources isp_mmio_range, 287 u32 reg_offset) 288 { 289 return __raw_readl(isp->mmio_base[isp_mmio_range] + reg_offset); 290 } 291 292 /* 293 * isp_reg_writel - Write value to an OMAP3 ISP register 294 * @isp: Device pointer specific to the OMAP3 ISP. 295 * @reg_value: 32 bit value to write to the register. 296 * @isp_mmio_range: Range to which the register offset refers to. 297 * @reg_offset: Register offset to write into. 298 */ 299 static inline isp_reg_writel(struct isp_device * isp,u32 reg_value,enum isp_mem_resources isp_mmio_range,u32 reg_offset)300 void isp_reg_writel(struct isp_device *isp, u32 reg_value, 301 enum isp_mem_resources isp_mmio_range, u32 reg_offset) 302 { 303 __raw_writel(reg_value, isp->mmio_base[isp_mmio_range] + reg_offset); 304 } 305 306 /* 307 * isp_reg_clr - Clear individual bits in an OMAP3 ISP register 308 * @isp: Device pointer specific to the OMAP3 ISP. 309 * @mmio_range: Range to which the register offset refers to. 310 * @reg: Register offset to work on. 311 * @clr_bits: 32 bit value which would be cleared in the register. 312 */ 313 static inline isp_reg_clr(struct isp_device * isp,enum isp_mem_resources mmio_range,u32 reg,u32 clr_bits)314 void isp_reg_clr(struct isp_device *isp, enum isp_mem_resources mmio_range, 315 u32 reg, u32 clr_bits) 316 { 317 u32 v = isp_reg_readl(isp, mmio_range, reg); 318 319 isp_reg_writel(isp, v & ~clr_bits, mmio_range, reg); 320 } 321 322 /* 323 * isp_reg_set - Set individual bits in an OMAP3 ISP register 324 * @isp: Device pointer specific to the OMAP3 ISP. 325 * @mmio_range: Range to which the register offset refers to. 326 * @reg: Register offset to work on. 327 * @set_bits: 32 bit value which would be set in the register. 328 */ 329 static inline isp_reg_set(struct isp_device * isp,enum isp_mem_resources mmio_range,u32 reg,u32 set_bits)330 void isp_reg_set(struct isp_device *isp, enum isp_mem_resources mmio_range, 331 u32 reg, u32 set_bits) 332 { 333 u32 v = isp_reg_readl(isp, mmio_range, reg); 334 335 isp_reg_writel(isp, v | set_bits, mmio_range, reg); 336 } 337 338 /* 339 * isp_reg_clr_set - Clear and set invidial bits in an OMAP3 ISP register 340 * @isp: Device pointer specific to the OMAP3 ISP. 341 * @mmio_range: Range to which the register offset refers to. 342 * @reg: Register offset to work on. 343 * @clr_bits: 32 bit value which would be cleared in the register. 344 * @set_bits: 32 bit value which would be set in the register. 345 * 346 * The clear operation is done first, and then the set operation. 347 */ 348 static inline isp_reg_clr_set(struct isp_device * isp,enum isp_mem_resources mmio_range,u32 reg,u32 clr_bits,u32 set_bits)349 void isp_reg_clr_set(struct isp_device *isp, enum isp_mem_resources mmio_range, 350 u32 reg, u32 clr_bits, u32 set_bits) 351 { 352 u32 v = isp_reg_readl(isp, mmio_range, reg); 353 354 isp_reg_writel(isp, (v & ~clr_bits) | set_bits, mmio_range, reg); 355 } 356 357 static inline enum v4l2_buf_type isp_pad_buffer_type(const struct v4l2_subdev * subdev,int pad)358 isp_pad_buffer_type(const struct v4l2_subdev *subdev, int pad) 359 { 360 if (pad >= subdev->entity.num_pads) 361 return 0; 362 363 if (subdev->entity.pads[pad].flags & MEDIA_PAD_FL_SINK) 364 return V4L2_BUF_TYPE_VIDEO_OUTPUT; 365 else 366 return V4L2_BUF_TYPE_VIDEO_CAPTURE; 367 } 368 369 #endif /* OMAP3_ISP_CORE_H */ 370
