1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * camss-vfe.h 4 * 5 * Qualcomm MSM Camera Subsystem - VFE (Video Front End) Module 6 * 7 * Copyright (c) 2013-2015, The Linux Foundation. All rights reserved. 8 * Copyright (C) 2015-2018 Linaro Ltd. 9 */ 10 #ifndef QC_MSM_CAMSS_VFE_H 11 #define QC_MSM_CAMSS_VFE_H 12 13 #include <linux/clk.h> 14 #include <linux/spinlock_types.h> 15 #include <media/media-entity.h> 16 #include <media/v4l2-device.h> 17 #include <media/v4l2-subdev.h> 18 19 #include "camss-video.h" 20 #include "camss-vfe-gen1.h" 21 22 #define MSM_VFE_PAD_SINK 0 23 #define MSM_VFE_PAD_SRC 1 24 #define MSM_VFE_PADS_NUM 2 25 26 #define MSM_VFE_IMAGE_MASTERS_NUM 7 27 #define MSM_VFE_COMPOSITE_IRQ_NUM 4 28 29 /* VFE halt timeout */ 30 #define VFE_HALT_TIMEOUT_MS 100 31 /* Frame drop value. VAL + UPDATES - 1 should not exceed 31 */ 32 #define VFE_FRAME_DROP_VAL 30 33 34 #define vfe_line_array(ptr_line) \ 35 ((const struct vfe_line (*)[]) &(ptr_line)[-(ptr_line)->id]) 36 37 #define to_vfe(ptr_line) \ 38 container_of(vfe_line_array(ptr_line), struct vfe_device, line) 39 40 enum vfe_output_state { 41 VFE_OUTPUT_OFF, 42 VFE_OUTPUT_RESERVED, 43 VFE_OUTPUT_SINGLE, 44 VFE_OUTPUT_CONTINUOUS, 45 VFE_OUTPUT_IDLE, 46 VFE_OUTPUT_STOPPING, 47 VFE_OUTPUT_ON, 48 }; 49 50 enum vfe_line_id { 51 VFE_LINE_NONE = -1, 52 VFE_LINE_RDI0 = 0, 53 VFE_LINE_RDI1 = 1, 54 VFE_LINE_RDI2 = 2, 55 VFE_LINE_PIX = 3, 56 VFE_LINE_NUM_MAX = 4 57 }; 58 59 struct vfe_output { 60 u8 wm_num; 61 u8 wm_idx[3]; 62 63 struct camss_buffer *buf[2]; 64 struct camss_buffer *last_buffer; 65 struct list_head pending_bufs; 66 67 unsigned int drop_update_idx; 68 69 union { 70 struct { 71 int active_buf; 72 int wait_sof; 73 } gen1; 74 struct { 75 int active_num; 76 } gen2; 77 }; 78 enum vfe_output_state state; 79 unsigned int sequence; 80 81 int wait_reg_update; 82 struct completion sof; 83 struct completion reg_update; 84 }; 85 86 struct vfe_line { 87 enum vfe_line_id id; 88 struct v4l2_subdev subdev; 89 struct media_pad pads[MSM_VFE_PADS_NUM]; 90 struct v4l2_mbus_framefmt fmt[MSM_VFE_PADS_NUM]; 91 struct v4l2_rect compose; 92 struct v4l2_rect crop; 93 struct camss_video video_out; 94 struct vfe_output output; 95 const struct camss_format_info *formats; 96 unsigned int nformats; 97 }; 98 99 struct vfe_device; 100 101 struct vfe_hw_ops { 102 void (*enable_irq)(struct vfe_device *vfe); 103 void (*global_reset)(struct vfe_device *vfe); 104 u32 (*hw_version)(struct vfe_device *vfe); 105 irqreturn_t (*isr)(int irq, void *dev); 106 void (*isr_read)(struct vfe_device *vfe, u32 *value0, u32 *value1); 107 void (*pm_domain_off)(struct vfe_device *vfe); 108 int (*pm_domain_on)(struct vfe_device *vfe); 109 void (*reg_update)(struct vfe_device *vfe, enum vfe_line_id line_id); 110 void (*reg_update_clear)(struct vfe_device *vfe, 111 enum vfe_line_id line_id); 112 void (*subdev_init)(struct device *dev, struct vfe_device *vfe); 113 int (*vfe_disable)(struct vfe_line *line); 114 int (*vfe_enable)(struct vfe_line *line); 115 int (*vfe_halt)(struct vfe_device *vfe); 116 void (*violation_read)(struct vfe_device *vfe); 117 void (*vfe_wm_start)(struct vfe_device *vfe, u8 wm, 118 struct vfe_line *line); 119 void (*vfe_wm_stop)(struct vfe_device *vfe, u8 wm); 120 void (*vfe_buf_done)(struct vfe_device *vfe, int port_id); 121 void (*vfe_wm_update)(struct vfe_device *vfe, u8 wm, u32 addr, 122 struct vfe_line *line); 123 }; 124 125 struct vfe_isr_ops { 126 void (*reset_ack)(struct vfe_device *vfe); 127 void (*halt_ack)(struct vfe_device *vfe); 128 void (*reg_update)(struct vfe_device *vfe, enum vfe_line_id line_id); 129 void (*sof)(struct vfe_device *vfe, enum vfe_line_id line_id); 130 void (*comp_done)(struct vfe_device *vfe, u8 comp); 131 void (*wm_done)(struct vfe_device *vfe, u8 wm); 132 }; 133 134 struct vfe_subdev_resources { 135 bool is_lite; 136 u8 line_num; 137 bool has_pd; 138 char *pd_name; 139 const struct vfe_hw_ops *hw_ops; 140 const struct camss_formats *formats_rdi; 141 const struct camss_formats *formats_pix; 142 }; 143 144 struct vfe_device { 145 struct camss *camss; 146 u8 id; 147 void __iomem *base; 148 u32 irq; 149 char irq_name[30]; 150 struct camss_clock *clock; 151 int nclocks; 152 struct completion reset_complete; 153 struct completion halt_complete; 154 struct mutex power_lock; 155 int power_count; 156 struct mutex stream_lock; 157 int stream_count; 158 spinlock_t output_lock; 159 enum vfe_line_id wm_output_map[MSM_VFE_IMAGE_MASTERS_NUM]; 160 struct vfe_line line[VFE_LINE_NUM_MAX]; 161 u32 reg_update; 162 u8 was_streaming; 163 const struct vfe_subdev_resources *res; 164 const struct vfe_hw_ops_gen1 *ops_gen1; 165 struct vfe_isr_ops isr_ops; 166 struct camss_video_ops video_ops; 167 struct device *genpd; 168 struct device_link *genpd_link; 169 }; 170 171 struct camss_subdev_resources; 172 173 int msm_vfe_subdev_init(struct camss *camss, struct vfe_device *vfe, 174 const struct camss_subdev_resources *res, u8 id); 175 176 void msm_vfe_genpd_cleanup(struct vfe_device *vfe); 177 178 int msm_vfe_register_entities(struct vfe_device *vfe, 179 struct v4l2_device *v4l2_dev); 180 181 void msm_vfe_unregister_entities(struct vfe_device *vfe); 182 183 /* 184 * vfe_buf_add_pending - Add output buffer to list of pending 185 * @output: VFE output 186 * @buffer: Video buffer 187 */ 188 void vfe_buf_add_pending(struct vfe_output *output, struct camss_buffer *buffer); 189 190 struct camss_buffer *vfe_buf_get_pending(struct vfe_output *output); 191 192 int vfe_flush_buffers(struct camss_video *vid, enum vb2_buffer_state state); 193 194 /* 195 * vfe_isr_comp_done - Process composite image done interrupt 196 * @vfe: VFE Device 197 * @comp: Composite image id 198 */ 199 void vfe_isr_comp_done(struct vfe_device *vfe, u8 comp); 200 201 void vfe_isr_reset_ack(struct vfe_device *vfe); 202 int vfe_put_output(struct vfe_line *line); 203 int vfe_release_wm(struct vfe_device *vfe, u8 wm); 204 int vfe_reserve_wm(struct vfe_device *vfe, enum vfe_line_id line_id); 205 206 /* 207 * vfe_reset - Trigger reset on VFE module and wait to complete 208 * @vfe: VFE device 209 * 210 * Return 0 on success or a negative error code otherwise 211 */ 212 int vfe_reset(struct vfe_device *vfe); 213 214 /* 215 * vfe_disable - Disable streaming on VFE line 216 * @line: VFE line 217 * 218 * Return 0 on success or a negative error code otherwise 219 */ 220 int vfe_disable(struct vfe_line *line); 221 222 /* 223 * vfe_pm_domain_off - Disable power domains specific to this VFE. 224 * @vfe: VFE Device 225 */ 226 void vfe_pm_domain_off(struct vfe_device *vfe); 227 228 /* 229 * vfe_pm_domain_on - Enable power domains specific to this VFE. 230 * @vfe: VFE Device 231 */ 232 int vfe_pm_domain_on(struct vfe_device *vfe); 233 234 extern const struct camss_formats vfe_formats_rdi_8x16; 235 extern const struct camss_formats vfe_formats_pix_8x16; 236 extern const struct camss_formats vfe_formats_rdi_8x96; 237 extern const struct camss_formats vfe_formats_pix_8x96; 238 extern const struct camss_formats vfe_formats_rdi_845; 239 extern const struct camss_formats vfe_formats_pix_845; 240 241 extern const struct vfe_hw_ops vfe_ops_4_1; 242 extern const struct vfe_hw_ops vfe_ops_4_7; 243 extern const struct vfe_hw_ops vfe_ops_4_8; 244 extern const struct vfe_hw_ops vfe_ops_170; 245 extern const struct vfe_hw_ops vfe_ops_480; 246 extern const struct vfe_hw_ops vfe_ops_680; 247 extern const struct vfe_hw_ops vfe_ops_780; 248 249 int vfe_get(struct vfe_device *vfe); 250 void vfe_put(struct vfe_device *vfe); 251 252 /* 253 * vfe_is_lite - Return if VFE is VFE lite. 254 * @vfe: VFE Device 255 * 256 * Some VFE lites have a different register layout. 257 * 258 * Return whether VFE is VFE lite 259 */ 260 bool vfe_is_lite(struct vfe_device *vfe); 261 262 /* 263 * vfe_hw_version - Process write master done interrupt 264 * @vfe: VFE Device 265 * 266 * Return vfe hw version 267 */ 268 u32 vfe_hw_version(struct vfe_device *vfe); 269 /* 270 * vfe_enable - Enable streaming on VFE line 271 * @line: VFE line 272 * 273 * Return 0 on success or a negative error code otherwise 274 */ 275 int vfe_enable_v2(struct vfe_line *line); 276 277 /* 278 * vfe_buf_done - Process write master done interrupt 279 * @vfe: VFE Device 280 * @wm: Write master id 281 */ 282 void vfe_buf_done(struct vfe_device *vfe, int wm); 283 284 /* 285 * vfe_get_output_v2 - Get vfe output line 286 * line: VFE line 287 * 288 * Return 0 on success or a negative error code otherwise 289 */ 290 int vfe_get_output_v2(struct vfe_line *line); 291 292 /* 293 * vfe_enable_output_v2 - Enable vfe output line 294 * line: VFE line 295 * 296 * Return 0 on success or a negative error code otherwise 297 */ 298 int vfe_enable_output_v2(struct vfe_line *line); 299 300 /* 301 * vfe_queue_buffer_v2 - Add empty buffer 302 * @vid: Video device structure 303 * @buf: Buffer to be enqueued 304 * 305 * Add an empty buffer - depending on the current number of buffers it will be 306 * put in pending buffer queue or directly given to the hardware to be filled. 307 * 308 * Return 0 on success or a negative error code otherwise 309 */ 310 int vfe_queue_buffer_v2(struct camss_video *vid, 311 struct camss_buffer *buf); 312 313 #endif /* QC_MSM_CAMSS_VFE_H */ 314