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 vfe_format *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_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 }; 154 155 struct camss_subdev_resources; 156 157 int msm_vfe_subdev_init(struct camss *camss, struct vfe_device *vfe, 158 const struct camss_subdev_resources *res, u8 id); 159 160 int msm_vfe_register_entities(struct vfe_device *vfe, 161 struct v4l2_device *v4l2_dev); 162 163 void msm_vfe_unregister_entities(struct vfe_device *vfe); 164 165 /* 166 * vfe_buf_add_pending - Add output buffer to list of pending 167 * @output: VFE output 168 * @buffer: Video buffer 169 */ 170 void vfe_buf_add_pending(struct vfe_output *output, struct camss_buffer *buffer); 171 172 struct camss_buffer *vfe_buf_get_pending(struct vfe_output *output); 173 174 int vfe_flush_buffers(struct camss_video *vid, enum vb2_buffer_state state); 175 176 /* 177 * vfe_isr_comp_done - Process composite image done interrupt 178 * @vfe: VFE Device 179 * @comp: Composite image id 180 */ 181 void vfe_isr_comp_done(struct vfe_device *vfe, u8 comp); 182 183 void vfe_isr_reset_ack(struct vfe_device *vfe); 184 int vfe_put_output(struct vfe_line *line); 185 int vfe_release_wm(struct vfe_device *vfe, u8 wm); 186 int vfe_reserve_wm(struct vfe_device *vfe, enum vfe_line_id line_id); 187 188 /* 189 * vfe_reset - Trigger reset on VFE module and wait to complete 190 * @vfe: VFE device 191 * 192 * Return 0 on success or a negative error code otherwise 193 */ 194 int vfe_reset(struct vfe_device *vfe); 195 196 /* 197 * vfe_disable - Disable streaming on VFE line 198 * @line: VFE line 199 * 200 * Return 0 on success or a negative error code otherwise 201 */ 202 int vfe_disable(struct vfe_line *line); 203 204 extern const struct vfe_hw_ops vfe_ops_4_1; 205 extern const struct vfe_hw_ops vfe_ops_4_7; 206 extern const struct vfe_hw_ops vfe_ops_4_8; 207 extern const struct vfe_hw_ops vfe_ops_170; 208 extern const struct vfe_hw_ops vfe_ops_480; 209 210 int vfe_get(struct vfe_device *vfe); 211 void vfe_put(struct vfe_device *vfe); 212 213 #endif /* QC_MSM_CAMSS_VFE_H */ 214