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 40enum 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 50enum 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 59struct 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 86struct 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 vfe_format *formats; 96 unsigned int nformats; 97}; 98 99struct vfe_device; 100 101struct 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 120struct 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 129struct vfe_device { 130 struct camss *camss; 131 u8 id; 132 void __iomem *base; 133 u32 irq; 134 char irq_name[30]; 135 struct camss_clock *clock; 136 int nclocks; 137 struct completion reset_complete; 138 struct completion halt_complete; 139 struct mutex power_lock; 140 int power_count; 141 struct mutex stream_lock; 142 int stream_count; 143 spinlock_t output_lock; 144 enum vfe_line_id wm_output_map[MSM_VFE_IMAGE_MASTERS_NUM]; 145 struct vfe_line line[VFE_LINE_NUM_MAX]; 146 u8 line_num; 147 u32 reg_update; 148 u8 was_streaming; 149 const struct vfe_hw_ops *ops; 150 const struct vfe_hw_ops_gen1 *ops_gen1; 151 struct vfe_isr_ops isr_ops; 152 struct camss_video_ops video_ops; 153 struct device *genpd; 154 struct device_link *genpd_link; 155}; 156 157struct camss_subdev_resources; 158 159int msm_vfe_subdev_init(struct camss *camss, struct vfe_device *vfe, 160 const struct camss_subdev_resources *res, u8 id); 161 162void msm_vfe_genpd_cleanup(struct vfe_device *vfe); 163 164int msm_vfe_register_entities(struct vfe_device *vfe, 165 struct v4l2_device *v4l2_dev); 166 167void msm_vfe_unregister_entities(struct vfe_device *vfe); 168 169/* 170 * vfe_buf_add_pending - Add output buffer to list of pending 171 * @output: VFE output 172 * @buffer: Video buffer 173 */ 174void vfe_buf_add_pending(struct vfe_output *output, struct camss_buffer *buffer); 175 176struct camss_buffer *vfe_buf_get_pending(struct vfe_output *output); 177 178int vfe_flush_buffers(struct camss_video *vid, enum vb2_buffer_state state); 179 180/* 181 * vfe_isr_comp_done - Process composite image done interrupt 182 * @vfe: VFE Device 183 * @comp: Composite image id 184 */ 185void vfe_isr_comp_done(struct vfe_device *vfe, u8 comp); 186 187void vfe_isr_reset_ack(struct vfe_device *vfe); 188int vfe_put_output(struct vfe_line *line); 189int vfe_release_wm(struct vfe_device *vfe, u8 wm); 190int vfe_reserve_wm(struct vfe_device *vfe, enum vfe_line_id line_id); 191 192/* 193 * vfe_reset - Trigger reset on VFE module and wait to complete 194 * @vfe: VFE device 195 * 196 * Return 0 on success or a negative error code otherwise 197 */ 198int vfe_reset(struct vfe_device *vfe); 199 200/* 201 * vfe_disable - Disable streaming on VFE line 202 * @line: VFE line 203 * 204 * Return 0 on success or a negative error code otherwise 205 */ 206int vfe_disable(struct vfe_line *line); 207 208/* 209 * vfe_pm_domain_off - Disable power domains specific to this VFE. 210 * @vfe: VFE Device 211 */ 212void vfe_pm_domain_off(struct vfe_device *vfe); 213 214/* 215 * vfe_pm_domain_on - Enable power domains specific to this VFE. 216 * @vfe: VFE Device 217 */ 218int vfe_pm_domain_on(struct vfe_device *vfe); 219 220extern const struct vfe_hw_ops vfe_ops_4_1; 221extern const struct vfe_hw_ops vfe_ops_4_7; 222extern const struct vfe_hw_ops vfe_ops_4_8; 223extern const struct vfe_hw_ops vfe_ops_170; 224extern const struct vfe_hw_ops vfe_ops_480; 225 226int vfe_get(struct vfe_device *vfe); 227void vfe_put(struct vfe_device *vfe); 228 229/* 230 * vfe_is_lite - Return if VFE is VFE lite. 231 * @vfe: VFE Device 232 * 233 * Some VFE lites have a different register layout. 234 * 235 * Return whether VFE is VFE lite 236 */ 237bool vfe_is_lite(struct vfe_device *vfe); 238 239#endif /* QC_MSM_CAMSS_VFE_H */ 240