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_common)(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_stop)(struct vfe_device *vfe, u8 wm); 118 }; 119 120 struct vfe_isr_ops { 121 void (*reset_ack)(struct vfe_device *vfe); 122 void (*halt_ack)(struct vfe_device *vfe); 123 void (*reg_update)(struct vfe_device *vfe, enum vfe_line_id line_id); 124 void (*sof)(struct vfe_device *vfe, enum vfe_line_id line_id); 125 void (*comp_done)(struct vfe_device *vfe, u8 comp); 126 void (*wm_done)(struct vfe_device *vfe, u8 wm); 127 }; 128 129 struct vfe_subdev_resources { 130 bool is_lite; 131 u8 line_num; 132 bool has_pd; 133 char *pd_name; 134 const struct vfe_hw_ops *hw_ops; 135 const struct camss_formats *formats_rdi; 136 const struct camss_formats *formats_pix; 137 }; 138 139 struct vfe_device { 140 struct camss *camss; 141 u8 id; 142 void __iomem *base; 143 u32 irq; 144 char irq_name[30]; 145 struct camss_clock *clock; 146 int nclocks; 147 struct completion reset_complete; 148 struct completion halt_complete; 149 struct mutex power_lock; 150 int power_count; 151 struct mutex stream_lock; 152 int stream_count; 153 spinlock_t output_lock; 154 enum vfe_line_id wm_output_map[MSM_VFE_IMAGE_MASTERS_NUM]; 155 struct vfe_line line[VFE_LINE_NUM_MAX]; 156 u32 reg_update; 157 u8 was_streaming; 158 const struct vfe_subdev_resources *res; 159 const struct vfe_hw_ops_gen1 *ops_gen1; 160 struct vfe_isr_ops isr_ops; 161 struct camss_video_ops video_ops; 162 struct device *genpd; 163 struct device_link *genpd_link; 164 }; 165 166 struct camss_subdev_resources; 167 168 int msm_vfe_subdev_init(struct camss *camss, struct vfe_device *vfe, 169 const struct camss_subdev_resources *res, u8 id); 170 171 void msm_vfe_genpd_cleanup(struct vfe_device *vfe); 172 173 int msm_vfe_register_entities(struct vfe_device *vfe, 174 struct v4l2_device *v4l2_dev); 175 176 void msm_vfe_unregister_entities(struct vfe_device *vfe); 177 178 /* 179 * vfe_buf_add_pending - Add output buffer to list of pending 180 * @output: VFE output 181 * @buffer: Video buffer 182 */ 183 void vfe_buf_add_pending(struct vfe_output *output, struct camss_buffer *buffer); 184 185 struct camss_buffer *vfe_buf_get_pending(struct vfe_output *output); 186 187 int vfe_flush_buffers(struct camss_video *vid, enum vb2_buffer_state state); 188 189 /* 190 * vfe_isr_comp_done - Process composite image done interrupt 191 * @vfe: VFE Device 192 * @comp: Composite image id 193 */ 194 void vfe_isr_comp_done(struct vfe_device *vfe, u8 comp); 195 196 void vfe_isr_reset_ack(struct vfe_device *vfe); 197 int vfe_put_output(struct vfe_line *line); 198 int vfe_release_wm(struct vfe_device *vfe, u8 wm); 199 int vfe_reserve_wm(struct vfe_device *vfe, enum vfe_line_id line_id); 200 201 /* 202 * vfe_reset - Trigger reset on VFE module and wait to complete 203 * @vfe: VFE device 204 * 205 * Return 0 on success or a negative error code otherwise 206 */ 207 int vfe_reset(struct vfe_device *vfe); 208 209 /* 210 * vfe_disable - Disable streaming on VFE line 211 * @line: VFE line 212 * 213 * Return 0 on success or a negative error code otherwise 214 */ 215 int vfe_disable(struct vfe_line *line); 216 217 /* 218 * vfe_pm_domain_off - Disable power domains specific to this VFE. 219 * @vfe: VFE Device 220 */ 221 void vfe_pm_domain_off(struct vfe_device *vfe); 222 223 /* 224 * vfe_pm_domain_on - Enable power domains specific to this VFE. 225 * @vfe: VFE Device 226 */ 227 int vfe_pm_domain_on(struct vfe_device *vfe); 228 229 extern const struct camss_formats vfe_formats_rdi_8x16; 230 extern const struct camss_formats vfe_formats_pix_8x16; 231 extern const struct camss_formats vfe_formats_rdi_8x96; 232 extern const struct camss_formats vfe_formats_pix_8x96; 233 extern const struct camss_formats vfe_formats_rdi_845; 234 extern const struct camss_formats vfe_formats_pix_845; 235 236 extern const struct vfe_hw_ops vfe_ops_4_1; 237 extern const struct vfe_hw_ops vfe_ops_4_7; 238 extern const struct vfe_hw_ops vfe_ops_4_8; 239 extern const struct vfe_hw_ops vfe_ops_170; 240 extern const struct vfe_hw_ops vfe_ops_480; 241 242 int vfe_get(struct vfe_device *vfe); 243 void vfe_put(struct vfe_device *vfe); 244 245 /* 246 * vfe_is_lite - Return if VFE is VFE lite. 247 * @vfe: VFE Device 248 * 249 * Some VFE lites have a different register layout. 250 * 251 * Return whether VFE is VFE lite 252 */ 253 bool vfe_is_lite(struct vfe_device *vfe); 254 255 #endif /* QC_MSM_CAMSS_VFE_H */ 256