Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 1 | /* |
| 2 | * This is the driver for the STA2x11 Video Input Port. |
| 3 | * |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 4 | * Copyright (C) 2012 ST Microelectronics |
| 5 | * author: Federico Vaga <federico.vaga@gmail.com> |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 6 | * Copyright (C) 2010 WindRiver Systems, Inc. |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 7 | * authors: Andreas Kies <andreas.kies@windriver.com> |
| 8 | * Vlad Lungu <vlad.lungu@windriver.com> |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 9 | * |
| 10 | * This program is free software; you can redistribute it and/or modify it |
| 11 | * under the terms and conditions of the GNU General Public License, |
| 12 | * version 2, as published by the Free Software Foundation. |
| 13 | * |
| 14 | * This program is distributed in the hope it will be useful, but WITHOUT |
| 15 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 16 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
| 17 | * more details. |
| 18 | * |
| 19 | * You should have received a copy of the GNU General Public License along with |
| 20 | * this program; if not, write to the Free Software Foundation, Inc., |
| 21 | * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. |
| 22 | * |
| 23 | * The full GNU General Public License is included in this distribution in |
| 24 | * the file called "COPYING". |
| 25 | * |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 26 | */ |
| 27 | |
| 28 | #include <linux/types.h> |
| 29 | #include <linux/kernel.h> |
| 30 | #include <linux/module.h> |
| 31 | #include <linux/init.h> |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 32 | #include <linux/videodev2.h> |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 33 | #include <linux/kmod.h> |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 34 | #include <linux/pci.h> |
| 35 | #include <linux/interrupt.h> |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 36 | #include <linux/io.h> |
| 37 | #include <linux/gpio.h> |
| 38 | #include <linux/i2c.h> |
| 39 | #include <linux/delay.h> |
| 40 | #include <media/v4l2-common.h> |
| 41 | #include <media/v4l2-device.h> |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 42 | #include <media/v4l2-ctrls.h> |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 43 | #include <media/v4l2-ioctl.h> |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 44 | #include <media/v4l2-fh.h> |
| 45 | #include <media/v4l2-event.h> |
| 46 | #include <media/videobuf2-dma-contig.h> |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 47 | |
| 48 | #include "sta2x11_vip.h" |
| 49 | |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 50 | #define DRV_VERSION "1.3" |
| 51 | |
| 52 | #ifndef PCI_DEVICE_ID_STMICRO_VIP |
| 53 | #define PCI_DEVICE_ID_STMICRO_VIP 0xCC0D |
| 54 | #endif |
| 55 | |
| 56 | #define MAX_FRAMES 4 |
| 57 | |
| 58 | /*Register offsets*/ |
| 59 | #define DVP_CTL 0x00 |
| 60 | #define DVP_TFO 0x04 |
| 61 | #define DVP_TFS 0x08 |
| 62 | #define DVP_BFO 0x0C |
| 63 | #define DVP_BFS 0x10 |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 64 | #define DVP_VTP 0x14 |
| 65 | #define DVP_VBP 0x18 |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 66 | #define DVP_VMP 0x1C |
| 67 | #define DVP_ITM 0x98 |
| 68 | #define DVP_ITS 0x9C |
| 69 | #define DVP_STA 0xA0 |
| 70 | #define DVP_HLFLN 0xA8 |
| 71 | #define DVP_RGB 0xC0 |
| 72 | #define DVP_PKZ 0xF0 |
| 73 | |
| 74 | /*Register fields*/ |
| 75 | #define DVP_CTL_ENA 0x00000001 |
| 76 | #define DVP_CTL_RST 0x80000000 |
| 77 | #define DVP_CTL_DIS (~0x00040001) |
| 78 | |
| 79 | #define DVP_IT_VSB 0x00000008 |
| 80 | #define DVP_IT_VST 0x00000010 |
| 81 | #define DVP_IT_FIFO 0x00000020 |
| 82 | |
| 83 | #define DVP_HLFLN_SD 0x00000001 |
| 84 | |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 85 | #define SAVE_COUNT 8 |
| 86 | #define AUX_COUNT 3 |
| 87 | #define IRQ_COUNT 1 |
| 88 | |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 89 | |
| 90 | struct vip_buffer { |
Junghak Sung | 2d70071 | 2015-09-22 10:30:30 -0300 | [diff] [blame] | 91 | struct vb2_v4l2_buffer vb; |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 92 | struct list_head list; |
| 93 | dma_addr_t dma; |
| 94 | }; |
Junghak Sung | 2d70071 | 2015-09-22 10:30:30 -0300 | [diff] [blame] | 95 | static inline struct vip_buffer *to_vip_buffer(struct vb2_v4l2_buffer *vb2) |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 96 | { |
| 97 | return container_of(vb2, struct vip_buffer, vb); |
| 98 | } |
| 99 | |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 100 | /** |
| 101 | * struct sta2x11_vip - All internal data for one instance of device |
| 102 | * @v4l2_dev: device registered in v4l layer |
| 103 | * @video_dev: properties of our device |
| 104 | * @pdev: PCI device |
| 105 | * @adapter: contains I2C adapter information |
| 106 | * @register_save_area: All relevant register are saved here during suspend |
| 107 | * @decoder: contains information about video DAC |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 108 | * @ctrl_hdl: handler for control framework |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 109 | * @format: pixel format, fixed UYVY |
| 110 | * @std: video standard (e.g. PAL/NTSC) |
| 111 | * @input: input line for video signal ( 0 or 1 ) |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 112 | * @disabled: Device is in power down state |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 113 | * @slock: for excluse acces of registers |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 114 | * @vb_vidq: queue maintained by videobuf2 layer |
| 115 | * @buffer_list: list of buffer in use |
| 116 | * @sequence: sequence number of acquired buffer |
| 117 | * @active: current active buffer |
| 118 | * @lock: used in videobuf2 callback |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 119 | * @tcount: Number of top frames |
| 120 | * @bcount: Number of bottom frames |
| 121 | * @overflow: Number of FIFO overflows |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 122 | * @iomem: hardware base address |
| 123 | * @config: I2C and gpio config from platform |
| 124 | * |
| 125 | * All non-local data is accessed via this structure. |
| 126 | */ |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 127 | struct sta2x11_vip { |
| 128 | struct v4l2_device v4l2_dev; |
Hans Verkuil | 4db4ca74 | 2015-03-09 13:34:04 -0300 | [diff] [blame] | 129 | struct video_device video_dev; |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 130 | struct pci_dev *pdev; |
| 131 | struct i2c_adapter *adapter; |
| 132 | unsigned int register_save_area[IRQ_COUNT + SAVE_COUNT + AUX_COUNT]; |
| 133 | struct v4l2_subdev *decoder; |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 134 | struct v4l2_ctrl_handler ctrl_hdl; |
| 135 | |
| 136 | |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 137 | struct v4l2_pix_format format; |
| 138 | v4l2_std_id std; |
| 139 | unsigned int input; |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 140 | int disabled; |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 141 | spinlock_t slock; |
| 142 | |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 143 | struct vb2_queue vb_vidq; |
| 144 | struct list_head buffer_list; |
| 145 | unsigned int sequence; |
| 146 | struct vip_buffer *active; /* current active buffer */ |
| 147 | spinlock_t lock; /* Used in videobuf2 callback */ |
| 148 | |
| 149 | /* Interrupt counters */ |
| 150 | int tcount, bcount; |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 151 | int overflow; |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 152 | |
Mauro Carvalho Chehab | 87f4ebc | 2014-09-24 11:17:06 -0300 | [diff] [blame] | 153 | void __iomem *iomem; /* I/O Memory */ |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 154 | struct vip_config *config; |
| 155 | }; |
| 156 | |
| 157 | static const unsigned int registers_to_save[AUX_COUNT] = { |
| 158 | DVP_HLFLN, DVP_RGB, DVP_PKZ |
| 159 | }; |
| 160 | |
| 161 | static struct v4l2_pix_format formats_50[] = { |
| 162 | { /*PAL interlaced */ |
| 163 | .width = 720, |
| 164 | .height = 576, |
| 165 | .pixelformat = V4L2_PIX_FMT_UYVY, |
| 166 | .field = V4L2_FIELD_INTERLACED, |
| 167 | .bytesperline = 720 * 2, |
| 168 | .sizeimage = 720 * 2 * 576, |
| 169 | .colorspace = V4L2_COLORSPACE_SMPTE170M}, |
| 170 | { /*PAL top */ |
| 171 | .width = 720, |
| 172 | .height = 288, |
| 173 | .pixelformat = V4L2_PIX_FMT_UYVY, |
| 174 | .field = V4L2_FIELD_TOP, |
| 175 | .bytesperline = 720 * 2, |
| 176 | .sizeimage = 720 * 2 * 288, |
| 177 | .colorspace = V4L2_COLORSPACE_SMPTE170M}, |
| 178 | { /*PAL bottom */ |
| 179 | .width = 720, |
| 180 | .height = 288, |
| 181 | .pixelformat = V4L2_PIX_FMT_UYVY, |
| 182 | .field = V4L2_FIELD_BOTTOM, |
| 183 | .bytesperline = 720 * 2, |
| 184 | .sizeimage = 720 * 2 * 288, |
| 185 | .colorspace = V4L2_COLORSPACE_SMPTE170M}, |
| 186 | |
| 187 | }; |
| 188 | |
| 189 | static struct v4l2_pix_format formats_60[] = { |
| 190 | { /*NTSC interlaced */ |
| 191 | .width = 720, |
| 192 | .height = 480, |
| 193 | .pixelformat = V4L2_PIX_FMT_UYVY, |
| 194 | .field = V4L2_FIELD_INTERLACED, |
| 195 | .bytesperline = 720 * 2, |
| 196 | .sizeimage = 720 * 2 * 480, |
| 197 | .colorspace = V4L2_COLORSPACE_SMPTE170M}, |
| 198 | { /*NTSC top */ |
| 199 | .width = 720, |
| 200 | .height = 240, |
| 201 | .pixelformat = V4L2_PIX_FMT_UYVY, |
| 202 | .field = V4L2_FIELD_TOP, |
| 203 | .bytesperline = 720 * 2, |
| 204 | .sizeimage = 720 * 2 * 240, |
| 205 | .colorspace = V4L2_COLORSPACE_SMPTE170M}, |
| 206 | { /*NTSC bottom */ |
| 207 | .width = 720, |
| 208 | .height = 240, |
| 209 | .pixelformat = V4L2_PIX_FMT_UYVY, |
| 210 | .field = V4L2_FIELD_BOTTOM, |
| 211 | .bytesperline = 720 * 2, |
| 212 | .sizeimage = 720 * 2 * 240, |
| 213 | .colorspace = V4L2_COLORSPACE_SMPTE170M}, |
| 214 | }; |
| 215 | |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 216 | /* Write VIP register */ |
| 217 | static inline void reg_write(struct sta2x11_vip *vip, unsigned int reg, u32 val) |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 218 | { |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 219 | iowrite32((val), (vip->iomem)+(reg)); |
| 220 | } |
| 221 | /* Read VIP register */ |
| 222 | static inline u32 reg_read(struct sta2x11_vip *vip, unsigned int reg) |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 223 | { |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 224 | return ioread32((vip->iomem)+(reg)); |
| 225 | } |
| 226 | /* Start DMA acquisition */ |
| 227 | static void start_dma(struct sta2x11_vip *vip, struct vip_buffer *vip_buf) |
| 228 | { |
| 229 | unsigned long offset = 0; |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 230 | |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 231 | if (vip->format.field == V4L2_FIELD_INTERLACED) |
| 232 | offset = vip->format.width * 2; |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 233 | |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 234 | spin_lock_irq(&vip->slock); |
| 235 | /* Enable acquisition */ |
| 236 | reg_write(vip, DVP_CTL, reg_read(vip, DVP_CTL) | DVP_CTL_ENA); |
| 237 | /* Set Top and Bottom Field memory address */ |
| 238 | reg_write(vip, DVP_VTP, (u32)vip_buf->dma); |
| 239 | reg_write(vip, DVP_VBP, (u32)vip_buf->dma + offset); |
| 240 | spin_unlock_irq(&vip->slock); |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 241 | } |
| 242 | |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 243 | /* Fetch the next buffer to activate */ |
| 244 | static void vip_active_buf_next(struct sta2x11_vip *vip) |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 245 | { |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 246 | /* Get the next buffer */ |
| 247 | spin_lock(&vip->lock); |
| 248 | if (list_empty(&vip->buffer_list)) {/* No available buffer */ |
| 249 | spin_unlock(&vip->lock); |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 250 | return; |
| 251 | } |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 252 | vip->active = list_first_entry(&vip->buffer_list, |
| 253 | struct vip_buffer, |
| 254 | list); |
| 255 | /* Reset Top and Bottom counter */ |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 256 | vip->tcount = 0; |
| 257 | vip->bcount = 0; |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 258 | spin_unlock(&vip->lock); |
| 259 | if (vb2_is_streaming(&vip->vb_vidq)) { /* streaming is on */ |
| 260 | start_dma(vip, vip->active); /* start dma capture */ |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 261 | } |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 262 | } |
| 263 | |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 264 | |
| 265 | /* Videobuf2 Operations */ |
Hans Verkuil | df9ecb0 | 2015-10-28 00:50:37 -0200 | [diff] [blame] | 266 | static int queue_setup(struct vb2_queue *vq, |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 267 | unsigned int *nbuffers, unsigned int *nplanes, |
Hans Verkuil | 36c0f8b | 2016-04-15 09:15:05 -0300 | [diff] [blame^] | 268 | unsigned int sizes[], struct device *alloc_devs[]) |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 269 | { |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 270 | struct sta2x11_vip *vip = vb2_get_drv_priv(vq); |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 271 | |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 272 | if (!(*nbuffers) || *nbuffers < MAX_FRAMES) |
| 273 | *nbuffers = MAX_FRAMES; |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 274 | |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 275 | *nplanes = 1; |
| 276 | sizes[0] = vip->format.sizeimage; |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 277 | |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 278 | vip->sequence = 0; |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 279 | vip->active = NULL; |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 280 | vip->tcount = 0; |
| 281 | vip->bcount = 0; |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 282 | |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 283 | return 0; |
| 284 | }; |
| 285 | static int buffer_init(struct vb2_buffer *vb) |
| 286 | { |
Junghak Sung | 2d70071 | 2015-09-22 10:30:30 -0300 | [diff] [blame] | 287 | struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); |
| 288 | struct vip_buffer *vip_buf = to_vip_buffer(vbuf); |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 289 | |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 290 | vip_buf->dma = vb2_dma_contig_plane_dma_addr(vb, 0); |
| 291 | INIT_LIST_HEAD(&vip_buf->list); |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 292 | return 0; |
| 293 | } |
| 294 | |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 295 | static int buffer_prepare(struct vb2_buffer *vb) |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 296 | { |
Junghak Sung | 2d70071 | 2015-09-22 10:30:30 -0300 | [diff] [blame] | 297 | struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 298 | struct sta2x11_vip *vip = vb2_get_drv_priv(vb->vb2_queue); |
Junghak Sung | 2d70071 | 2015-09-22 10:30:30 -0300 | [diff] [blame] | 299 | struct vip_buffer *vip_buf = to_vip_buffer(vbuf); |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 300 | unsigned long size; |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 301 | |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 302 | size = vip->format.sizeimage; |
| 303 | if (vb2_plane_size(vb, 0) < size) { |
| 304 | v4l2_err(&vip->v4l2_dev, "buffer too small (%lu < %lu)\n", |
| 305 | vb2_plane_size(vb, 0), size); |
| 306 | return -EINVAL; |
| 307 | } |
| 308 | |
Junghak Sung | 2d70071 | 2015-09-22 10:30:30 -0300 | [diff] [blame] | 309 | vb2_set_plane_payload(&vip_buf->vb.vb2_buf, 0, size); |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 310 | |
| 311 | return 0; |
| 312 | } |
| 313 | static void buffer_queue(struct vb2_buffer *vb) |
| 314 | { |
Junghak Sung | 2d70071 | 2015-09-22 10:30:30 -0300 | [diff] [blame] | 315 | struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 316 | struct sta2x11_vip *vip = vb2_get_drv_priv(vb->vb2_queue); |
Junghak Sung | 2d70071 | 2015-09-22 10:30:30 -0300 | [diff] [blame] | 317 | struct vip_buffer *vip_buf = to_vip_buffer(vbuf); |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 318 | |
| 319 | spin_lock(&vip->lock); |
| 320 | list_add_tail(&vip_buf->list, &vip->buffer_list); |
| 321 | if (!vip->active) { /* No active buffer, active the first one */ |
| 322 | vip->active = list_first_entry(&vip->buffer_list, |
| 323 | struct vip_buffer, |
| 324 | list); |
| 325 | if (vb2_is_streaming(&vip->vb_vidq)) /* streaming is on */ |
| 326 | start_dma(vip, vip_buf); /* start dma capture */ |
| 327 | } |
| 328 | spin_unlock(&vip->lock); |
| 329 | } |
Hans Verkuil | 0647064 | 2014-03-04 07:27:13 -0300 | [diff] [blame] | 330 | static void buffer_finish(struct vb2_buffer *vb) |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 331 | { |
Junghak Sung | 2d70071 | 2015-09-22 10:30:30 -0300 | [diff] [blame] | 332 | struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 333 | struct sta2x11_vip *vip = vb2_get_drv_priv(vb->vb2_queue); |
Junghak Sung | 2d70071 | 2015-09-22 10:30:30 -0300 | [diff] [blame] | 334 | struct vip_buffer *vip_buf = to_vip_buffer(vbuf); |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 335 | |
| 336 | /* Buffer handled, remove it from the list */ |
| 337 | spin_lock(&vip->lock); |
| 338 | list_del_init(&vip_buf->list); |
| 339 | spin_unlock(&vip->lock); |
| 340 | |
Hans Verkuil | 9c0863b | 2014-03-04 07:34:49 -0300 | [diff] [blame] | 341 | if (vb2_is_streaming(vb->vb2_queue)) |
| 342 | vip_active_buf_next(vip); |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 343 | } |
| 344 | |
| 345 | static int start_streaming(struct vb2_queue *vq, unsigned int count) |
| 346 | { |
| 347 | struct sta2x11_vip *vip = vb2_get_drv_priv(vq); |
| 348 | |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 349 | spin_lock_irq(&vip->slock); |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 350 | /* Enable interrupt VSYNC Top and Bottom*/ |
| 351 | reg_write(vip, DVP_ITM, DVP_IT_VSB | DVP_IT_VST); |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 352 | spin_unlock_irq(&vip->slock); |
| 353 | |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 354 | if (count) |
| 355 | start_dma(vip, vip->active); |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 356 | |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 357 | return 0; |
| 358 | } |
| 359 | |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 360 | /* abort streaming and wait for last buffer */ |
Hans Verkuil | e37559b | 2014-04-17 02:47:21 -0300 | [diff] [blame] | 361 | static void stop_streaming(struct vb2_queue *vq) |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 362 | { |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 363 | struct sta2x11_vip *vip = vb2_get_drv_priv(vq); |
| 364 | struct vip_buffer *vip_buf, *node; |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 365 | |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 366 | /* Disable acquisition */ |
| 367 | reg_write(vip, DVP_CTL, reg_read(vip, DVP_CTL) & ~DVP_CTL_ENA); |
| 368 | /* Disable all interrupts */ |
| 369 | reg_write(vip, DVP_ITM, 0); |
| 370 | |
| 371 | /* Release all active buffers */ |
| 372 | spin_lock(&vip->lock); |
| 373 | list_for_each_entry_safe(vip_buf, node, &vip->buffer_list, list) { |
Junghak Sung | 2d70071 | 2015-09-22 10:30:30 -0300 | [diff] [blame] | 374 | vb2_buffer_done(&vip_buf->vb.vb2_buf, VB2_BUF_STATE_ERROR); |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 375 | list_del(&vip_buf->list); |
| 376 | } |
| 377 | spin_unlock(&vip->lock); |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 378 | } |
| 379 | |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 380 | static struct vb2_ops vip_video_qops = { |
| 381 | .queue_setup = queue_setup, |
| 382 | .buf_init = buffer_init, |
| 383 | .buf_prepare = buffer_prepare, |
| 384 | .buf_finish = buffer_finish, |
| 385 | .buf_queue = buffer_queue, |
| 386 | .start_streaming = start_streaming, |
| 387 | .stop_streaming = stop_streaming, |
| 388 | }; |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 389 | |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 390 | |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 391 | /* File Operations */ |
| 392 | static const struct v4l2_file_operations vip_fops = { |
| 393 | .owner = THIS_MODULE, |
| 394 | .open = v4l2_fh_open, |
| 395 | .release = vb2_fop_release, |
| 396 | .unlocked_ioctl = video_ioctl2, |
| 397 | .read = vb2_fop_read, |
| 398 | .mmap = vb2_fop_mmap, |
| 399 | .poll = vb2_fop_poll |
| 400 | }; |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 401 | |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 402 | |
| 403 | /** |
| 404 | * vidioc_querycap - return capabilities of device |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 405 | * @file: descriptor of device |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 406 | * @cap: contains return values |
| 407 | * |
| 408 | * the capabilities of the device are returned |
| 409 | * |
| 410 | * return value: 0, no error. |
| 411 | */ |
| 412 | static int vidioc_querycap(struct file *file, void *priv, |
| 413 | struct v4l2_capability *cap) |
| 414 | { |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 415 | struct sta2x11_vip *vip = video_drvdata(file); |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 416 | |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 417 | strcpy(cap->driver, KBUILD_MODNAME); |
| 418 | strcpy(cap->card, KBUILD_MODNAME); |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 419 | snprintf(cap->bus_info, sizeof(cap->bus_info), "PCI:%s", |
| 420 | pci_name(vip->pdev)); |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 421 | cap->device_caps = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_READWRITE | |
| 422 | V4L2_CAP_STREAMING; |
| 423 | cap->capabilities = cap->device_caps | V4L2_CAP_DEVICE_CAPS; |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 424 | |
| 425 | return 0; |
| 426 | } |
| 427 | |
| 428 | /** |
| 429 | * vidioc_s_std - set video standard |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 430 | * @file: descriptor of device |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 431 | * @std: contains standard to be set |
| 432 | * |
| 433 | * the video standard is set |
| 434 | * |
| 435 | * return value: 0, no error. |
| 436 | * |
| 437 | * -EIO, no input signal detected |
| 438 | * |
| 439 | * other, returned from video DAC. |
| 440 | */ |
Hans Verkuil | 314527a | 2013-03-15 06:10:40 -0300 | [diff] [blame] | 441 | static int vidioc_s_std(struct file *file, void *priv, v4l2_std_id std) |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 442 | { |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 443 | struct sta2x11_vip *vip = video_drvdata(file); |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 444 | |
Hans Verkuil | 7b9f31f | 2016-04-22 10:03:38 -0300 | [diff] [blame] | 445 | /* |
| 446 | * This is here for backwards compatibility only. |
| 447 | * The use of V4L2_STD_ALL to trigger a querystd is non-standard. |
| 448 | */ |
| 449 | if (std == V4L2_STD_ALL) { |
| 450 | v4l2_subdev_call(vip->decoder, video, querystd, &std); |
| 451 | if (std == V4L2_STD_UNKNOWN) |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 452 | return -EIO; |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 453 | } |
| 454 | |
Hans Verkuil | 7b9f31f | 2016-04-22 10:03:38 -0300 | [diff] [blame] | 455 | if (vip->std != std) { |
| 456 | vip->std = std; |
Hans Verkuil | 314527a | 2013-03-15 06:10:40 -0300 | [diff] [blame] | 457 | if (V4L2_STD_525_60 & std) |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 458 | vip->format = formats_60[0]; |
| 459 | else |
| 460 | vip->format = formats_50[0]; |
| 461 | } |
| 462 | |
Laurent Pinchart | 8774bed | 2014-04-28 16:53:01 -0300 | [diff] [blame] | 463 | return v4l2_subdev_call(vip->decoder, video, s_std, std); |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 464 | } |
| 465 | |
| 466 | /** |
| 467 | * vidioc_g_std - get video standard |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 468 | * @file: descriptor of device |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 469 | * @std: contains return values |
| 470 | * |
| 471 | * the current video standard is returned |
| 472 | * |
| 473 | * return value: 0, no error. |
| 474 | */ |
| 475 | static int vidioc_g_std(struct file *file, void *priv, v4l2_std_id *std) |
| 476 | { |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 477 | struct sta2x11_vip *vip = video_drvdata(file); |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 478 | |
| 479 | *std = vip->std; |
| 480 | return 0; |
| 481 | } |
| 482 | |
| 483 | /** |
| 484 | * vidioc_querystd - get possible video standards |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 485 | * @file: descriptor of device |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 486 | * @std: contains return values |
| 487 | * |
| 488 | * all possible video standards are returned |
| 489 | * |
| 490 | * return value: delivered by video DAC routine. |
| 491 | */ |
| 492 | static int vidioc_querystd(struct file *file, void *priv, v4l2_std_id *std) |
| 493 | { |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 494 | struct sta2x11_vip *vip = video_drvdata(file); |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 495 | |
| 496 | return v4l2_subdev_call(vip->decoder, video, querystd, std); |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 497 | } |
| 498 | |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 499 | static int vidioc_enum_input(struct file *file, void *priv, |
| 500 | struct v4l2_input *inp) |
| 501 | { |
| 502 | if (inp->index > 1) |
| 503 | return -EINVAL; |
| 504 | |
| 505 | inp->type = V4L2_INPUT_TYPE_CAMERA; |
| 506 | inp->std = V4L2_STD_ALL; |
| 507 | sprintf(inp->name, "Camera %u", inp->index); |
| 508 | |
| 509 | return 0; |
| 510 | } |
| 511 | |
| 512 | /** |
| 513 | * vidioc_s_input - set input line |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 514 | * @file: descriptor of device |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 515 | * @i: new input line number |
| 516 | * |
| 517 | * the current active input line is set |
| 518 | * |
| 519 | * return value: 0, no error. |
| 520 | * |
| 521 | * -EINVAL, line number out of range |
| 522 | */ |
| 523 | static int vidioc_s_input(struct file *file, void *priv, unsigned int i) |
| 524 | { |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 525 | struct sta2x11_vip *vip = video_drvdata(file); |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 526 | int ret; |
| 527 | |
| 528 | if (i > 1) |
| 529 | return -EINVAL; |
| 530 | ret = v4l2_subdev_call(vip->decoder, video, s_routing, i, 0, 0); |
| 531 | |
| 532 | if (!ret) |
| 533 | vip->input = i; |
| 534 | |
| 535 | return 0; |
| 536 | } |
| 537 | |
| 538 | /** |
| 539 | * vidioc_g_input - return input line |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 540 | * @file: descriptor of device |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 541 | * @i: returned input line number |
| 542 | * |
| 543 | * the current active input line is returned |
| 544 | * |
| 545 | * return value: always 0. |
| 546 | */ |
| 547 | static int vidioc_g_input(struct file *file, void *priv, unsigned int *i) |
| 548 | { |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 549 | struct sta2x11_vip *vip = video_drvdata(file); |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 550 | |
| 551 | *i = vip->input; |
| 552 | return 0; |
| 553 | } |
| 554 | |
| 555 | /** |
| 556 | * vidioc_enum_fmt_vid_cap - return video capture format |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 557 | * @f: returned format information |
| 558 | * |
| 559 | * returns name and format of video capture |
| 560 | * Only UYVY is supported by hardware. |
| 561 | * |
| 562 | * return value: always 0. |
| 563 | */ |
| 564 | static int vidioc_enum_fmt_vid_cap(struct file *file, void *priv, |
| 565 | struct v4l2_fmtdesc *f) |
| 566 | { |
| 567 | |
| 568 | if (f->index != 0) |
| 569 | return -EINVAL; |
| 570 | |
| 571 | strcpy(f->description, "4:2:2, packed, UYVY"); |
| 572 | f->pixelformat = V4L2_PIX_FMT_UYVY; |
| 573 | f->flags = 0; |
| 574 | return 0; |
| 575 | } |
| 576 | |
| 577 | /** |
| 578 | * vidioc_try_fmt_vid_cap - set video capture format |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 579 | * @file: descriptor of device |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 580 | * @f: new format |
| 581 | * |
| 582 | * new video format is set which includes width and |
| 583 | * field type. width is fixed to 720, no scaling. |
| 584 | * Only UYVY is supported by this hardware. |
| 585 | * the minimum height is 200, the maximum is 576 (PAL) |
| 586 | * |
| 587 | * return value: 0, no error |
| 588 | * |
| 589 | * -EINVAL, pixel or field format not supported |
| 590 | * |
| 591 | */ |
| 592 | static int vidioc_try_fmt_vid_cap(struct file *file, void *priv, |
| 593 | struct v4l2_format *f) |
| 594 | { |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 595 | struct sta2x11_vip *vip = video_drvdata(file); |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 596 | int interlace_lim; |
| 597 | |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 598 | if (V4L2_PIX_FMT_UYVY != f->fmt.pix.pixelformat) { |
| 599 | v4l2_warn(&vip->v4l2_dev, "Invalid format, only UYVY supported\n"); |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 600 | return -EINVAL; |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 601 | } |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 602 | |
Mauro Carvalho Chehab | 6ae009a | 2012-05-20 12:07:41 -0300 | [diff] [blame] | 603 | if (V4L2_STD_525_60 & vip->std) |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 604 | interlace_lim = 240; |
| 605 | else |
| 606 | interlace_lim = 288; |
| 607 | |
| 608 | switch (f->fmt.pix.field) { |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 609 | default: |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 610 | case V4L2_FIELD_ANY: |
| 611 | if (interlace_lim < f->fmt.pix.height) |
| 612 | f->fmt.pix.field = V4L2_FIELD_INTERLACED; |
| 613 | else |
| 614 | f->fmt.pix.field = V4L2_FIELD_BOTTOM; |
| 615 | break; |
| 616 | case V4L2_FIELD_TOP: |
| 617 | case V4L2_FIELD_BOTTOM: |
| 618 | if (interlace_lim < f->fmt.pix.height) |
| 619 | f->fmt.pix.height = interlace_lim; |
| 620 | break; |
| 621 | case V4L2_FIELD_INTERLACED: |
| 622 | break; |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 623 | } |
| 624 | |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 625 | /* It is the only supported format */ |
| 626 | f->fmt.pix.pixelformat = V4L2_PIX_FMT_UYVY; |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 627 | f->fmt.pix.height &= ~1; |
| 628 | if (2 * interlace_lim < f->fmt.pix.height) |
| 629 | f->fmt.pix.height = 2 * interlace_lim; |
| 630 | if (200 > f->fmt.pix.height) |
| 631 | f->fmt.pix.height = 200; |
| 632 | f->fmt.pix.width = 720; |
| 633 | f->fmt.pix.bytesperline = f->fmt.pix.width * 2; |
| 634 | f->fmt.pix.sizeimage = f->fmt.pix.width * 2 * f->fmt.pix.height; |
| 635 | f->fmt.pix.colorspace = V4L2_COLORSPACE_SMPTE170M; |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 636 | return 0; |
| 637 | } |
| 638 | |
| 639 | /** |
| 640 | * vidioc_s_fmt_vid_cap - set current video format parameters |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 641 | * @file: descriptor of device |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 642 | * @f: returned format information |
| 643 | * |
| 644 | * set new capture format |
| 645 | * return value: 0, no error |
| 646 | * |
| 647 | * other, delivered by video DAC routine. |
| 648 | */ |
| 649 | static int vidioc_s_fmt_vid_cap(struct file *file, void *priv, |
| 650 | struct v4l2_format *f) |
| 651 | { |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 652 | struct sta2x11_vip *vip = video_drvdata(file); |
| 653 | unsigned int t_stop, b_stop, pitch; |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 654 | int ret; |
| 655 | |
| 656 | ret = vidioc_try_fmt_vid_cap(file, priv, f); |
| 657 | if (ret) |
| 658 | return ret; |
| 659 | |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 660 | if (vb2_is_busy(&vip->vb_vidq)) { |
| 661 | /* Can't change format during acquisition */ |
| 662 | v4l2_err(&vip->v4l2_dev, "device busy\n"); |
| 663 | return -EBUSY; |
| 664 | } |
| 665 | vip->format = f->fmt.pix; |
| 666 | switch (vip->format.field) { |
| 667 | case V4L2_FIELD_INTERLACED: |
| 668 | t_stop = ((vip->format.height / 2 - 1) << 16) | |
| 669 | (2 * vip->format.width - 1); |
| 670 | b_stop = t_stop; |
| 671 | pitch = 4 * vip->format.width; |
| 672 | break; |
| 673 | case V4L2_FIELD_TOP: |
| 674 | t_stop = ((vip->format.height - 1) << 16) | |
| 675 | (2 * vip->format.width - 1); |
| 676 | b_stop = (0 << 16) | (2 * vip->format.width - 1); |
| 677 | pitch = 2 * vip->format.width; |
| 678 | break; |
| 679 | case V4L2_FIELD_BOTTOM: |
| 680 | t_stop = (0 << 16) | (2 * vip->format.width - 1); |
| 681 | b_stop = (vip->format.height << 16) | |
| 682 | (2 * vip->format.width - 1); |
| 683 | pitch = 2 * vip->format.width; |
| 684 | break; |
| 685 | default: |
| 686 | v4l2_err(&vip->v4l2_dev, "unknown field format\n"); |
| 687 | return -EINVAL; |
| 688 | } |
| 689 | |
| 690 | spin_lock_irq(&vip->slock); |
| 691 | /* Y-X Top Field Offset */ |
| 692 | reg_write(vip, DVP_TFO, 0); |
| 693 | /* Y-X Bottom Field Offset */ |
| 694 | reg_write(vip, DVP_BFO, 0); |
| 695 | /* Y-X Top Field Stop*/ |
| 696 | reg_write(vip, DVP_TFS, t_stop); |
| 697 | /* Y-X Bottom Field Stop */ |
| 698 | reg_write(vip, DVP_BFS, b_stop); |
| 699 | /* Video Memory Pitch */ |
| 700 | reg_write(vip, DVP_VMP, pitch); |
| 701 | spin_unlock_irq(&vip->slock); |
| 702 | |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 703 | return 0; |
| 704 | } |
| 705 | |
| 706 | /** |
| 707 | * vidioc_g_fmt_vid_cap - get current video format parameters |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 708 | * @file: descriptor of device |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 709 | * @f: contains format information |
| 710 | * |
| 711 | * returns current video format parameters |
| 712 | * |
| 713 | * return value: 0, always successful |
| 714 | */ |
| 715 | static int vidioc_g_fmt_vid_cap(struct file *file, void *priv, |
| 716 | struct v4l2_format *f) |
| 717 | { |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 718 | struct sta2x11_vip *vip = video_drvdata(file); |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 719 | |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 720 | f->fmt.pix = vip->format; |
| 721 | |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 722 | return 0; |
| 723 | } |
| 724 | |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 725 | static const struct v4l2_ioctl_ops vip_ioctl_ops = { |
| 726 | .vidioc_querycap = vidioc_querycap, |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 727 | /* FMT handling */ |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 728 | .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap, |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 729 | .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap, |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 730 | .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap, |
| 731 | .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap, |
| 732 | /* Buffer handlers */ |
| 733 | .vidioc_create_bufs = vb2_ioctl_create_bufs, |
| 734 | .vidioc_prepare_buf = vb2_ioctl_prepare_buf, |
| 735 | .vidioc_reqbufs = vb2_ioctl_reqbufs, |
| 736 | .vidioc_querybuf = vb2_ioctl_querybuf, |
| 737 | .vidioc_qbuf = vb2_ioctl_qbuf, |
| 738 | .vidioc_dqbuf = vb2_ioctl_dqbuf, |
| 739 | /* Stream on/off */ |
| 740 | .vidioc_streamon = vb2_ioctl_streamon, |
| 741 | .vidioc_streamoff = vb2_ioctl_streamoff, |
| 742 | /* Standard handling */ |
| 743 | .vidioc_g_std = vidioc_g_std, |
| 744 | .vidioc_s_std = vidioc_s_std, |
| 745 | .vidioc_querystd = vidioc_querystd, |
| 746 | /* Input handling */ |
| 747 | .vidioc_enum_input = vidioc_enum_input, |
| 748 | .vidioc_g_input = vidioc_g_input, |
| 749 | .vidioc_s_input = vidioc_s_input, |
| 750 | /* Log status ioctl */ |
| 751 | .vidioc_log_status = v4l2_ctrl_log_status, |
| 752 | /* Event handling */ |
| 753 | .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, |
| 754 | .vidioc_unsubscribe_event = v4l2_event_unsubscribe, |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 755 | }; |
| 756 | |
| 757 | static struct video_device video_dev_template = { |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 758 | .name = KBUILD_MODNAME, |
Hans Verkuil | 4db4ca74 | 2015-03-09 13:34:04 -0300 | [diff] [blame] | 759 | .release = video_device_release_empty, |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 760 | .fops = &vip_fops, |
| 761 | .ioctl_ops = &vip_ioctl_ops, |
| 762 | .tvnorms = V4L2_STD_ALL, |
| 763 | }; |
| 764 | |
| 765 | /** |
| 766 | * vip_irq - interrupt routine |
| 767 | * @irq: Number of interrupt ( not used, correct number is assumed ) |
| 768 | * @vip: local data structure containing all information |
| 769 | * |
| 770 | * check for both frame interrupts set ( top and bottom ). |
| 771 | * check FIFO overflow, but limit number of log messages after open. |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 772 | * signal a complete buffer if done |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 773 | * |
| 774 | * return value: IRQ_NONE, interrupt was not generated by VIP |
| 775 | * |
| 776 | * IRQ_HANDLED, interrupt done. |
| 777 | */ |
| 778 | static irqreturn_t vip_irq(int irq, struct sta2x11_vip *vip) |
| 779 | { |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 780 | unsigned int status; |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 781 | |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 782 | status = reg_read(vip, DVP_ITS); |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 783 | |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 784 | if (!status) /* No interrupt to handle */ |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 785 | return IRQ_NONE; |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 786 | |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 787 | if (status & DVP_IT_FIFO) |
| 788 | if (vip->overflow++ > 5) |
| 789 | pr_info("VIP: fifo overflow\n"); |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 790 | |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 791 | if ((status & DVP_IT_VST) && (status & DVP_IT_VSB)) { |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 792 | /* this is bad, we are too slow, hope the condition is gone |
| 793 | * on the next frame */ |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 794 | return IRQ_HANDLED; |
| 795 | } |
| 796 | |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 797 | if (status & DVP_IT_VST) |
| 798 | if ((++vip->tcount) < 2) |
| 799 | return IRQ_HANDLED; |
| 800 | if (status & DVP_IT_VSB) { |
| 801 | vip->bcount++; |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 802 | return IRQ_HANDLED; |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 803 | } |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 804 | |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 805 | if (vip->active) { /* Acquisition is over on this buffer */ |
| 806 | /* Disable acquisition */ |
| 807 | reg_write(vip, DVP_CTL, reg_read(vip, DVP_CTL) & ~DVP_CTL_ENA); |
| 808 | /* Remove the active buffer from the list */ |
Junghak Sung | d6dd645 | 2015-11-03 08:16:37 -0200 | [diff] [blame] | 809 | vip->active->vb.vb2_buf.timestamp = ktime_get_ns(); |
Junghak Sung | 2d70071 | 2015-09-22 10:30:30 -0300 | [diff] [blame] | 810 | vip->active->vb.sequence = vip->sequence++; |
| 811 | vb2_buffer_done(&vip->active->vb.vb2_buf, VB2_BUF_STATE_DONE); |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 812 | } |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 813 | |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 814 | return IRQ_HANDLED; |
| 815 | } |
| 816 | |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 817 | static void sta2x11_vip_init_register(struct sta2x11_vip *vip) |
| 818 | { |
| 819 | /* Register initialization */ |
| 820 | spin_lock_irq(&vip->slock); |
| 821 | /* Clean interrupt */ |
| 822 | reg_read(vip, DVP_ITS); |
| 823 | /* Enable Half Line per vertical */ |
| 824 | reg_write(vip, DVP_HLFLN, DVP_HLFLN_SD); |
| 825 | /* Reset VIP control */ |
| 826 | reg_write(vip, DVP_CTL, DVP_CTL_RST); |
| 827 | /* Clear VIP control */ |
| 828 | reg_write(vip, DVP_CTL, 0); |
| 829 | spin_unlock_irq(&vip->slock); |
| 830 | } |
| 831 | static void sta2x11_vip_clear_register(struct sta2x11_vip *vip) |
| 832 | { |
| 833 | spin_lock_irq(&vip->slock); |
| 834 | /* Disable interrupt */ |
| 835 | reg_write(vip, DVP_ITM, 0); |
| 836 | /* Reset VIP Control */ |
| 837 | reg_write(vip, DVP_CTL, DVP_CTL_RST); |
| 838 | /* Clear VIP Control */ |
| 839 | reg_write(vip, DVP_CTL, 0); |
| 840 | /* Clean VIP Interrupt */ |
| 841 | reg_read(vip, DVP_ITS); |
| 842 | spin_unlock_irq(&vip->slock); |
| 843 | } |
| 844 | static int sta2x11_vip_init_buffer(struct sta2x11_vip *vip) |
| 845 | { |
| 846 | int err; |
| 847 | |
| 848 | err = dma_set_coherent_mask(&vip->pdev->dev, DMA_BIT_MASK(29)); |
| 849 | if (err) { |
| 850 | v4l2_err(&vip->v4l2_dev, "Cannot configure coherent mask"); |
| 851 | return err; |
| 852 | } |
| 853 | memset(&vip->vb_vidq, 0, sizeof(struct vb2_queue)); |
| 854 | vip->vb_vidq.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
| 855 | vip->vb_vidq.io_modes = VB2_MMAP | VB2_READ; |
| 856 | vip->vb_vidq.drv_priv = vip; |
| 857 | vip->vb_vidq.buf_struct_size = sizeof(struct vip_buffer); |
| 858 | vip->vb_vidq.ops = &vip_video_qops; |
| 859 | vip->vb_vidq.mem_ops = &vb2_dma_contig_memops; |
Hans Verkuil | b59b100 | 2015-05-07 03:22:14 -0300 | [diff] [blame] | 860 | vip->vb_vidq.timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_MONOTONIC; |
Hans Verkuil | 2bc46b3 | 2016-02-15 12:37:15 -0200 | [diff] [blame] | 861 | vip->vb_vidq.dev = &vip->pdev->dev; |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 862 | err = vb2_queue_init(&vip->vb_vidq); |
| 863 | if (err) |
| 864 | return err; |
| 865 | INIT_LIST_HEAD(&vip->buffer_list); |
| 866 | spin_lock_init(&vip->lock); |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 867 | return 0; |
| 868 | } |
Hans Verkuil | 2bc46b3 | 2016-02-15 12:37:15 -0200 | [diff] [blame] | 869 | |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 870 | static int sta2x11_vip_init_controls(struct sta2x11_vip *vip) |
| 871 | { |
| 872 | /* |
| 873 | * Inititialize an empty control so VIP can inerithing controls |
| 874 | * from ADV7180 |
| 875 | */ |
| 876 | v4l2_ctrl_handler_init(&vip->ctrl_hdl, 0); |
| 877 | |
| 878 | vip->v4l2_dev.ctrl_handler = &vip->ctrl_hdl; |
| 879 | if (vip->ctrl_hdl.error) { |
| 880 | int err = vip->ctrl_hdl.error; |
| 881 | |
| 882 | v4l2_ctrl_handler_free(&vip->ctrl_hdl); |
| 883 | return err; |
| 884 | } |
| 885 | |
| 886 | return 0; |
| 887 | } |
| 888 | |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 889 | /** |
| 890 | * vip_gpio_reserve - reserve gpio pin |
| 891 | * @dev: device |
| 892 | * @pin: GPIO pin number |
| 893 | * @dir: direction, input or output |
| 894 | * @name: GPIO pin name |
| 895 | * |
| 896 | */ |
| 897 | static int vip_gpio_reserve(struct device *dev, int pin, int dir, |
| 898 | const char *name) |
| 899 | { |
| 900 | int ret; |
| 901 | |
| 902 | if (pin == -1) |
| 903 | return 0; |
| 904 | |
| 905 | ret = gpio_request(pin, name); |
| 906 | if (ret) { |
| 907 | dev_err(dev, "Failed to allocate pin %d (%s)\n", pin, name); |
| 908 | return ret; |
| 909 | } |
| 910 | |
| 911 | ret = gpio_direction_output(pin, dir); |
| 912 | if (ret) { |
| 913 | dev_err(dev, "Failed to set direction for pin %d (%s)\n", |
| 914 | pin, name); |
| 915 | gpio_free(pin); |
| 916 | return ret; |
| 917 | } |
| 918 | |
| 919 | ret = gpio_export(pin, false); |
| 920 | if (ret) { |
| 921 | dev_err(dev, "Failed to export pin %d (%s)\n", pin, name); |
| 922 | gpio_free(pin); |
| 923 | return ret; |
| 924 | } |
| 925 | |
| 926 | return 0; |
| 927 | } |
| 928 | |
| 929 | /** |
| 930 | * vip_gpio_release - release gpio pin |
| 931 | * @dev: device |
| 932 | * @pin: GPIO pin number |
| 933 | * @name: GPIO pin name |
| 934 | * |
| 935 | */ |
| 936 | static void vip_gpio_release(struct device *dev, int pin, const char *name) |
| 937 | { |
| 938 | if (pin != -1) { |
| 939 | dev_dbg(dev, "releasing pin %d (%s)\n", pin, name); |
| 940 | gpio_unexport(pin); |
| 941 | gpio_free(pin); |
| 942 | } |
| 943 | } |
| 944 | |
| 945 | /** |
| 946 | * sta2x11_vip_init_one - init one instance of video device |
| 947 | * @pdev: PCI device |
| 948 | * @ent: (not used) |
| 949 | * |
| 950 | * allocate reset pins for DAC. |
| 951 | * Reset video DAC, this is done via reset line. |
| 952 | * allocate memory for managing device |
| 953 | * request interrupt |
| 954 | * map IO region |
| 955 | * register device |
| 956 | * find and initialize video DAC |
| 957 | * |
| 958 | * return value: 0, no error |
| 959 | * |
| 960 | * -ENOMEM, no memory |
| 961 | * |
| 962 | * -ENODEV, device could not be detected or registered |
| 963 | */ |
Greg Kroah-Hartman | 4c62e97 | 2012-12-21 13:17:53 -0800 | [diff] [blame] | 964 | static int sta2x11_vip_init_one(struct pci_dev *pdev, |
| 965 | const struct pci_device_id *ent) |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 966 | { |
| 967 | int ret; |
| 968 | struct sta2x11_vip *vip; |
| 969 | struct vip_config *config; |
| 970 | |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 971 | /* Check if hardware support 26-bit DMA */ |
| 972 | if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(26))) { |
| 973 | dev_err(&pdev->dev, "26-bit DMA addressing not available\n"); |
| 974 | return -EINVAL; |
| 975 | } |
| 976 | /* Enable PCI */ |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 977 | ret = pci_enable_device(pdev); |
| 978 | if (ret) |
| 979 | return ret; |
| 980 | |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 981 | /* Get VIP platform data */ |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 982 | config = dev_get_platdata(&pdev->dev); |
| 983 | if (!config) { |
| 984 | dev_info(&pdev->dev, "VIP slot disabled\n"); |
| 985 | ret = -EINVAL; |
| 986 | goto disable; |
| 987 | } |
| 988 | |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 989 | /* Power configuration */ |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 990 | ret = vip_gpio_reserve(&pdev->dev, config->pwr_pin, 0, |
| 991 | config->pwr_name); |
| 992 | if (ret) |
| 993 | goto disable; |
| 994 | |
| 995 | if (config->reset_pin >= 0) { |
| 996 | ret = vip_gpio_reserve(&pdev->dev, config->reset_pin, 0, |
| 997 | config->reset_name); |
| 998 | if (ret) { |
| 999 | vip_gpio_release(&pdev->dev, config->pwr_pin, |
| 1000 | config->pwr_name); |
| 1001 | goto disable; |
| 1002 | } |
| 1003 | } |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 1004 | if (config->pwr_pin != -1) { |
| 1005 | /* Datasheet says 5ms between PWR and RST */ |
| 1006 | usleep_range(5000, 25000); |
| 1007 | ret = gpio_direction_output(config->pwr_pin, 1); |
| 1008 | } |
| 1009 | |
| 1010 | if (config->reset_pin != -1) { |
| 1011 | /* Datasheet says 5ms between PWR and RST */ |
| 1012 | usleep_range(5000, 25000); |
| 1013 | ret = gpio_direction_output(config->reset_pin, 1); |
| 1014 | } |
| 1015 | usleep_range(5000, 25000); |
| 1016 | |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 1017 | /* Allocate a new VIP instance */ |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 1018 | vip = kzalloc(sizeof(struct sta2x11_vip), GFP_KERNEL); |
| 1019 | if (!vip) { |
| 1020 | ret = -ENOMEM; |
| 1021 | goto release_gpios; |
| 1022 | } |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 1023 | vip->pdev = pdev; |
| 1024 | vip->std = V4L2_STD_PAL; |
| 1025 | vip->format = formats_50[0]; |
| 1026 | vip->config = config; |
| 1027 | |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 1028 | ret = sta2x11_vip_init_controls(vip); |
| 1029 | if (ret) |
| 1030 | goto free_mem; |
Wei Yongjun | d017650 | 2013-05-13 10:00:01 -0300 | [diff] [blame] | 1031 | ret = v4l2_device_register(&pdev->dev, &vip->v4l2_dev); |
| 1032 | if (ret) |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 1033 | goto free_mem; |
| 1034 | |
| 1035 | dev_dbg(&pdev->dev, "BAR #0 at 0x%lx 0x%lx irq %d\n", |
| 1036 | (unsigned long)pci_resource_start(pdev, 0), |
| 1037 | (unsigned long)pci_resource_len(pdev, 0), pdev->irq); |
| 1038 | |
| 1039 | pci_set_master(pdev); |
| 1040 | |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 1041 | ret = pci_request_regions(pdev, KBUILD_MODNAME); |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 1042 | if (ret) |
| 1043 | goto unreg; |
| 1044 | |
| 1045 | vip->iomem = pci_iomap(pdev, 0, 0x100); |
| 1046 | if (!vip->iomem) { |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 1047 | ret = -ENOMEM; |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 1048 | goto release; |
| 1049 | } |
| 1050 | |
| 1051 | pci_enable_msi(pdev); |
| 1052 | |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 1053 | /* Initialize buffer */ |
| 1054 | ret = sta2x11_vip_init_buffer(vip); |
| 1055 | if (ret) |
| 1056 | goto unmap; |
| 1057 | |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 1058 | spin_lock_init(&vip->slock); |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 1059 | |
| 1060 | ret = request_irq(pdev->irq, |
| 1061 | (irq_handler_t) vip_irq, |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 1062 | IRQF_SHARED, KBUILD_MODNAME, vip); |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 1063 | if (ret) { |
| 1064 | dev_err(&pdev->dev, "request_irq failed\n"); |
| 1065 | ret = -ENODEV; |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 1066 | goto release_buf; |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 1067 | } |
| 1068 | |
Hans Verkuil | 4db4ca74 | 2015-03-09 13:34:04 -0300 | [diff] [blame] | 1069 | /* Initialize and register video device */ |
| 1070 | vip->video_dev = video_dev_template; |
| 1071 | vip->video_dev.v4l2_dev = &vip->v4l2_dev; |
| 1072 | vip->video_dev.queue = &vip->vb_vidq; |
| 1073 | video_set_drvdata(&vip->video_dev, vip); |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 1074 | |
Hans Verkuil | 4db4ca74 | 2015-03-09 13:34:04 -0300 | [diff] [blame] | 1075 | ret = video_register_device(&vip->video_dev, VFL_TYPE_GRABBER, -1); |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 1076 | if (ret) |
| 1077 | goto vrelease; |
| 1078 | |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 1079 | /* Get ADV7180 subdevice */ |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 1080 | vip->adapter = i2c_get_adapter(vip->config->i2c_id); |
| 1081 | if (!vip->adapter) { |
| 1082 | ret = -ENODEV; |
| 1083 | dev_err(&pdev->dev, "no I2C adapter found\n"); |
| 1084 | goto vunreg; |
| 1085 | } |
| 1086 | |
| 1087 | vip->decoder = v4l2_i2c_new_subdev(&vip->v4l2_dev, vip->adapter, |
| 1088 | "adv7180", vip->config->i2c_addr, |
| 1089 | NULL); |
| 1090 | if (!vip->decoder) { |
| 1091 | ret = -ENODEV; |
| 1092 | dev_err(&pdev->dev, "no decoder found\n"); |
| 1093 | goto vunreg; |
| 1094 | } |
| 1095 | |
| 1096 | i2c_put_adapter(vip->adapter); |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 1097 | v4l2_subdev_call(vip->decoder, core, init, 0); |
| 1098 | |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 1099 | sta2x11_vip_init_register(vip); |
| 1100 | |
| 1101 | dev_info(&pdev->dev, "STA2X11 Video Input Port (VIP) loaded\n"); |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 1102 | return 0; |
| 1103 | |
| 1104 | vunreg: |
Hans Verkuil | 4db4ca74 | 2015-03-09 13:34:04 -0300 | [diff] [blame] | 1105 | video_set_drvdata(&vip->video_dev, NULL); |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 1106 | vrelease: |
Hans Verkuil | 4db4ca74 | 2015-03-09 13:34:04 -0300 | [diff] [blame] | 1107 | video_unregister_device(&vip->video_dev); |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 1108 | free_irq(pdev->irq, vip); |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 1109 | release_buf: |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 1110 | pci_disable_msi(pdev); |
| 1111 | unmap: |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 1112 | vb2_queue_release(&vip->vb_vidq); |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 1113 | pci_iounmap(pdev, vip->iomem); |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 1114 | release: |
| 1115 | pci_release_regions(pdev); |
| 1116 | unreg: |
| 1117 | v4l2_device_unregister(&vip->v4l2_dev); |
| 1118 | free_mem: |
| 1119 | kfree(vip); |
| 1120 | release_gpios: |
| 1121 | vip_gpio_release(&pdev->dev, config->reset_pin, config->reset_name); |
| 1122 | vip_gpio_release(&pdev->dev, config->pwr_pin, config->pwr_name); |
| 1123 | disable: |
| 1124 | /* |
| 1125 | * do not call pci_disable_device on sta2x11 because it break all |
| 1126 | * other Bus masters on this EP |
| 1127 | */ |
| 1128 | return ret; |
| 1129 | } |
| 1130 | |
| 1131 | /** |
| 1132 | * sta2x11_vip_remove_one - release device |
| 1133 | * @pdev: PCI device |
| 1134 | * |
| 1135 | * Undo everything done in .._init_one |
| 1136 | * |
| 1137 | * unregister video device |
| 1138 | * free interrupt |
| 1139 | * unmap ioadresses |
| 1140 | * free memory |
| 1141 | * free GPIO pins |
| 1142 | */ |
Greg Kroah-Hartman | 4c62e97 | 2012-12-21 13:17:53 -0800 | [diff] [blame] | 1143 | static void sta2x11_vip_remove_one(struct pci_dev *pdev) |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 1144 | { |
| 1145 | struct v4l2_device *v4l2_dev = pci_get_drvdata(pdev); |
| 1146 | struct sta2x11_vip *vip = |
| 1147 | container_of(v4l2_dev, struct sta2x11_vip, v4l2_dev); |
| 1148 | |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 1149 | sta2x11_vip_clear_register(vip); |
| 1150 | |
Hans Verkuil | 4db4ca74 | 2015-03-09 13:34:04 -0300 | [diff] [blame] | 1151 | video_set_drvdata(&vip->video_dev, NULL); |
| 1152 | video_unregister_device(&vip->video_dev); |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 1153 | free_irq(pdev->irq, vip); |
| 1154 | pci_disable_msi(pdev); |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 1155 | vb2_queue_release(&vip->vb_vidq); |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 1156 | pci_iounmap(pdev, vip->iomem); |
| 1157 | pci_release_regions(pdev); |
| 1158 | |
| 1159 | v4l2_device_unregister(&vip->v4l2_dev); |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 1160 | |
| 1161 | vip_gpio_release(&pdev->dev, vip->config->pwr_pin, |
| 1162 | vip->config->pwr_name); |
| 1163 | vip_gpio_release(&pdev->dev, vip->config->reset_pin, |
| 1164 | vip->config->reset_name); |
| 1165 | |
| 1166 | kfree(vip); |
| 1167 | /* |
| 1168 | * do not call pci_disable_device on sta2x11 because it break all |
| 1169 | * other Bus masters on this EP |
| 1170 | */ |
| 1171 | } |
| 1172 | |
| 1173 | #ifdef CONFIG_PM |
| 1174 | |
| 1175 | /** |
| 1176 | * sta2x11_vip_suspend - set device into power save mode |
| 1177 | * @pdev: PCI device |
| 1178 | * @state: new state of device |
| 1179 | * |
| 1180 | * all relevant registers are saved and an attempt to set a new state is made. |
| 1181 | * |
| 1182 | * return value: 0 always indicate success, |
| 1183 | * even if device could not be disabled. (workaround for hardware problem) |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 1184 | */ |
| 1185 | static int sta2x11_vip_suspend(struct pci_dev *pdev, pm_message_t state) |
| 1186 | { |
| 1187 | struct v4l2_device *v4l2_dev = pci_get_drvdata(pdev); |
| 1188 | struct sta2x11_vip *vip = |
| 1189 | container_of(v4l2_dev, struct sta2x11_vip, v4l2_dev); |
| 1190 | unsigned long flags; |
| 1191 | int i; |
| 1192 | |
| 1193 | spin_lock_irqsave(&vip->slock, flags); |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 1194 | vip->register_save_area[0] = reg_read(vip, DVP_CTL); |
| 1195 | reg_write(vip, DVP_CTL, vip->register_save_area[0] & DVP_CTL_DIS); |
| 1196 | vip->register_save_area[SAVE_COUNT] = reg_read(vip, DVP_ITM); |
| 1197 | reg_write(vip, DVP_ITM, 0); |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 1198 | for (i = 1; i < SAVE_COUNT; i++) |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 1199 | vip->register_save_area[i] = reg_read(vip, 4 * i); |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 1200 | for (i = 0; i < AUX_COUNT; i++) |
| 1201 | vip->register_save_area[SAVE_COUNT + IRQ_COUNT + i] = |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 1202 | reg_read(vip, registers_to_save[i]); |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 1203 | spin_unlock_irqrestore(&vip->slock, flags); |
| 1204 | /* save pci state */ |
| 1205 | pci_save_state(pdev); |
| 1206 | if (pci_set_power_state(pdev, pci_choose_state(pdev, state))) { |
| 1207 | /* |
| 1208 | * do not call pci_disable_device on sta2x11 because it |
| 1209 | * break all other Bus masters on this EP |
| 1210 | */ |
| 1211 | vip->disabled = 1; |
| 1212 | } |
| 1213 | |
| 1214 | pr_info("VIP: suspend\n"); |
| 1215 | return 0; |
| 1216 | } |
| 1217 | |
| 1218 | /** |
| 1219 | * sta2x11_vip_resume - resume device operation |
| 1220 | * @pdev : PCI device |
| 1221 | * |
| 1222 | * re-enable device, set PCI state to powered and restore registers. |
| 1223 | * resume normal device operation afterwards. |
| 1224 | * |
| 1225 | * return value: 0, no error. |
| 1226 | * |
| 1227 | * other, could not set device to power on state. |
| 1228 | */ |
| 1229 | static int sta2x11_vip_resume(struct pci_dev *pdev) |
| 1230 | { |
| 1231 | struct v4l2_device *v4l2_dev = pci_get_drvdata(pdev); |
| 1232 | struct sta2x11_vip *vip = |
| 1233 | container_of(v4l2_dev, struct sta2x11_vip, v4l2_dev); |
| 1234 | unsigned long flags; |
| 1235 | int ret, i; |
| 1236 | |
| 1237 | pr_info("VIP: resume\n"); |
| 1238 | /* restore pci state */ |
| 1239 | if (vip->disabled) { |
| 1240 | ret = pci_enable_device(pdev); |
| 1241 | if (ret) { |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 1242 | pr_warn("VIP: Can't enable device.\n"); |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 1243 | return ret; |
| 1244 | } |
| 1245 | vip->disabled = 0; |
| 1246 | } |
| 1247 | ret = pci_set_power_state(pdev, PCI_D0); |
| 1248 | if (ret) { |
| 1249 | /* |
| 1250 | * do not call pci_disable_device on sta2x11 because it |
| 1251 | * break all other Bus masters on this EP |
| 1252 | */ |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 1253 | pr_warn("VIP: Can't enable device.\n"); |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 1254 | vip->disabled = 1; |
| 1255 | return ret; |
| 1256 | } |
| 1257 | |
| 1258 | pci_restore_state(pdev); |
| 1259 | |
| 1260 | spin_lock_irqsave(&vip->slock, flags); |
| 1261 | for (i = 1; i < SAVE_COUNT; i++) |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 1262 | reg_write(vip, 4 * i, vip->register_save_area[i]); |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 1263 | for (i = 0; i < AUX_COUNT; i++) |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 1264 | reg_write(vip, registers_to_save[i], |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 1265 | vip->register_save_area[SAVE_COUNT + IRQ_COUNT + i]); |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 1266 | reg_write(vip, DVP_CTL, vip->register_save_area[0]); |
| 1267 | reg_write(vip, DVP_ITM, vip->register_save_area[SAVE_COUNT]); |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 1268 | spin_unlock_irqrestore(&vip->slock, flags); |
| 1269 | return 0; |
| 1270 | } |
| 1271 | |
| 1272 | #endif |
| 1273 | |
Jingoo Han | f1b84d3 | 2013-12-02 20:15:04 -0300 | [diff] [blame] | 1274 | static const struct pci_device_id sta2x11_vip_pci_tbl[] = { |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 1275 | {PCI_DEVICE(PCI_VENDOR_ID_STMICRO, PCI_DEVICE_ID_STMICRO_VIP)}, |
| 1276 | {0,} |
| 1277 | }; |
| 1278 | |
| 1279 | static struct pci_driver sta2x11_vip_driver = { |
Federico Vaga | 8dc97ea | 2013-02-05 14:34:37 -0300 | [diff] [blame] | 1280 | .name = KBUILD_MODNAME, |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 1281 | .probe = sta2x11_vip_init_one, |
Greg Kroah-Hartman | 4c62e97 | 2012-12-21 13:17:53 -0800 | [diff] [blame] | 1282 | .remove = sta2x11_vip_remove_one, |
Federico Vaga | efeb98b | 2012-04-12 12:39:38 -0300 | [diff] [blame] | 1283 | .id_table = sta2x11_vip_pci_tbl, |
| 1284 | #ifdef CONFIG_PM |
| 1285 | .suspend = sta2x11_vip_suspend, |
| 1286 | .resume = sta2x11_vip_resume, |
| 1287 | #endif |
| 1288 | }; |
| 1289 | |
| 1290 | static int __init sta2x11_vip_init_module(void) |
| 1291 | { |
| 1292 | return pci_register_driver(&sta2x11_vip_driver); |
| 1293 | } |
| 1294 | |
| 1295 | static void __exit sta2x11_vip_exit_module(void) |
| 1296 | { |
| 1297 | pci_unregister_driver(&sta2x11_vip_driver); |
| 1298 | } |
| 1299 | |
| 1300 | #ifdef MODULE |
| 1301 | module_init(sta2x11_vip_init_module); |
| 1302 | module_exit(sta2x11_vip_exit_module); |
| 1303 | #else |
| 1304 | late_initcall_sync(sta2x11_vip_init_module); |
| 1305 | #endif |
| 1306 | |
| 1307 | MODULE_DESCRIPTION("STA2X11 Video Input Port driver"); |
| 1308 | MODULE_AUTHOR("Wind River"); |
| 1309 | MODULE_LICENSE("GPL v2"); |
| 1310 | MODULE_SUPPORTED_DEVICE("sta2x11 video input"); |
| 1311 | MODULE_VERSION(DRV_VERSION); |
| 1312 | MODULE_DEVICE_TABLE(pci, sta2x11_vip_pci_tbl); |