Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 1 | /* |
| 2 | * V4L2 Driver for i.MX27/i.MX25 camera host |
| 3 | * |
| 4 | * Copyright (C) 2008, Sascha Hauer, Pengutronix |
| 5 | * Copyright (C) 2010, Baruch Siach, Orex Computed Radiography |
Javier Martin | c6a41e3 | 2012-01-30 09:14:10 -0300 | [diff] [blame] | 6 | * Copyright (C) 2012, Javier Martin, Vista Silicon S.L. |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify |
| 9 | * it under the terms of the GNU General Public License as published by |
| 10 | * the Free Software Foundation; either version 2 of the License, or |
| 11 | * (at your option) any later version. |
| 12 | */ |
| 13 | |
| 14 | #include <linux/init.h> |
| 15 | #include <linux/module.h> |
| 16 | #include <linux/io.h> |
| 17 | #include <linux/delay.h> |
| 18 | #include <linux/slab.h> |
| 19 | #include <linux/dma-mapping.h> |
| 20 | #include <linux/errno.h> |
| 21 | #include <linux/fs.h> |
| 22 | #include <linux/interrupt.h> |
| 23 | #include <linux/kernel.h> |
| 24 | #include <linux/mm.h> |
| 25 | #include <linux/moduleparam.h> |
| 26 | #include <linux/time.h> |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 27 | #include <linux/device.h> |
| 28 | #include <linux/platform_device.h> |
| 29 | #include <linux/mutex.h> |
| 30 | #include <linux/clk.h> |
| 31 | |
| 32 | #include <media/v4l2-common.h> |
| 33 | #include <media/v4l2-dev.h> |
Javier Martin | c6a41e3 | 2012-01-30 09:14:10 -0300 | [diff] [blame] | 34 | #include <media/videobuf2-core.h> |
| 35 | #include <media/videobuf2-dma-contig.h> |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 36 | #include <media/soc_camera.h> |
| 37 | #include <media/soc_mediabus.h> |
| 38 | |
| 39 | #include <linux/videodev2.h> |
| 40 | |
| 41 | #include <mach/mx2_cam.h> |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 42 | #include <mach/hardware.h> |
| 43 | |
| 44 | #include <asm/dma.h> |
| 45 | |
| 46 | #define MX2_CAM_DRV_NAME "mx2-camera" |
Mauro Carvalho Chehab | 64dc3c1 | 2011-06-25 11:28:37 -0300 | [diff] [blame] | 47 | #define MX2_CAM_VERSION "0.0.6" |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 48 | #define MX2_CAM_DRIVER_DESCRIPTION "i.MX2x_Camera" |
| 49 | |
| 50 | /* reset values */ |
| 51 | #define CSICR1_RESET_VAL 0x40000800 |
| 52 | #define CSICR2_RESET_VAL 0x0 |
| 53 | #define CSICR3_RESET_VAL 0x0 |
| 54 | |
| 55 | /* csi control reg 1 */ |
| 56 | #define CSICR1_SWAP16_EN (1 << 31) |
| 57 | #define CSICR1_EXT_VSYNC (1 << 30) |
| 58 | #define CSICR1_EOF_INTEN (1 << 29) |
| 59 | #define CSICR1_PRP_IF_EN (1 << 28) |
| 60 | #define CSICR1_CCIR_MODE (1 << 27) |
| 61 | #define CSICR1_COF_INTEN (1 << 26) |
| 62 | #define CSICR1_SF_OR_INTEN (1 << 25) |
| 63 | #define CSICR1_RF_OR_INTEN (1 << 24) |
| 64 | #define CSICR1_STATFF_LEVEL (3 << 22) |
| 65 | #define CSICR1_STATFF_INTEN (1 << 21) |
| 66 | #define CSICR1_RXFF_LEVEL(l) (((l) & 3) << 19) /* MX27 */ |
| 67 | #define CSICR1_FB2_DMA_INTEN (1 << 20) /* MX25 */ |
| 68 | #define CSICR1_FB1_DMA_INTEN (1 << 19) /* MX25 */ |
| 69 | #define CSICR1_RXFF_INTEN (1 << 18) |
| 70 | #define CSICR1_SOF_POL (1 << 17) |
| 71 | #define CSICR1_SOF_INTEN (1 << 16) |
| 72 | #define CSICR1_MCLKDIV(d) (((d) & 0xF) << 12) |
| 73 | #define CSICR1_HSYNC_POL (1 << 11) |
| 74 | #define CSICR1_CCIR_EN (1 << 10) |
| 75 | #define CSICR1_MCLKEN (1 << 9) |
| 76 | #define CSICR1_FCC (1 << 8) |
| 77 | #define CSICR1_PACK_DIR (1 << 7) |
| 78 | #define CSICR1_CLR_STATFIFO (1 << 6) |
| 79 | #define CSICR1_CLR_RXFIFO (1 << 5) |
| 80 | #define CSICR1_GCLK_MODE (1 << 4) |
| 81 | #define CSICR1_INV_DATA (1 << 3) |
| 82 | #define CSICR1_INV_PCLK (1 << 2) |
| 83 | #define CSICR1_REDGE (1 << 1) |
| 84 | |
| 85 | #define SHIFT_STATFF_LEVEL 22 |
| 86 | #define SHIFT_RXFF_LEVEL 19 |
| 87 | #define SHIFT_MCLKDIV 12 |
| 88 | |
| 89 | /* control reg 3 */ |
| 90 | #define CSICR3_FRMCNT (0xFFFF << 16) |
| 91 | #define CSICR3_FRMCNT_RST (1 << 15) |
| 92 | #define CSICR3_DMA_REFLASH_RFF (1 << 14) |
| 93 | #define CSICR3_DMA_REFLASH_SFF (1 << 13) |
| 94 | #define CSICR3_DMA_REQ_EN_RFF (1 << 12) |
| 95 | #define CSICR3_DMA_REQ_EN_SFF (1 << 11) |
| 96 | #define CSICR3_RXFF_LEVEL(l) (((l) & 7) << 4) /* MX25 */ |
| 97 | #define CSICR3_CSI_SUP (1 << 3) |
| 98 | #define CSICR3_ZERO_PACK_EN (1 << 2) |
| 99 | #define CSICR3_ECC_INT_EN (1 << 1) |
| 100 | #define CSICR3_ECC_AUTO_EN (1 << 0) |
| 101 | |
| 102 | #define SHIFT_FRMCNT 16 |
| 103 | |
| 104 | /* csi status reg */ |
| 105 | #define CSISR_SFF_OR_INT (1 << 25) |
| 106 | #define CSISR_RFF_OR_INT (1 << 24) |
| 107 | #define CSISR_STATFF_INT (1 << 21) |
| 108 | #define CSISR_DMA_TSF_FB2_INT (1 << 20) /* MX25 */ |
| 109 | #define CSISR_DMA_TSF_FB1_INT (1 << 19) /* MX25 */ |
| 110 | #define CSISR_RXFF_INT (1 << 18) |
| 111 | #define CSISR_EOF_INT (1 << 17) |
| 112 | #define CSISR_SOF_INT (1 << 16) |
| 113 | #define CSISR_F2_INT (1 << 15) |
| 114 | #define CSISR_F1_INT (1 << 14) |
| 115 | #define CSISR_COF_INT (1 << 13) |
| 116 | #define CSISR_ECC_INT (1 << 1) |
| 117 | #define CSISR_DRDY (1 << 0) |
| 118 | |
| 119 | #define CSICR1 0x00 |
| 120 | #define CSICR2 0x04 |
| 121 | #define CSISR (cpu_is_mx27() ? 0x08 : 0x18) |
| 122 | #define CSISTATFIFO 0x0c |
| 123 | #define CSIRFIFO 0x10 |
| 124 | #define CSIRXCNT 0x14 |
| 125 | #define CSICR3 (cpu_is_mx27() ? 0x1C : 0x08) |
| 126 | #define CSIDMASA_STATFIFO 0x20 |
| 127 | #define CSIDMATA_STATFIFO 0x24 |
| 128 | #define CSIDMASA_FB1 0x28 |
| 129 | #define CSIDMASA_FB2 0x2c |
| 130 | #define CSIFBUF_PARA 0x30 |
| 131 | #define CSIIMAG_PARA 0x34 |
| 132 | |
| 133 | /* EMMA PrP */ |
| 134 | #define PRP_CNTL 0x00 |
| 135 | #define PRP_INTR_CNTL 0x04 |
| 136 | #define PRP_INTRSTATUS 0x08 |
| 137 | #define PRP_SOURCE_Y_PTR 0x0c |
| 138 | #define PRP_SOURCE_CB_PTR 0x10 |
| 139 | #define PRP_SOURCE_CR_PTR 0x14 |
| 140 | #define PRP_DEST_RGB1_PTR 0x18 |
| 141 | #define PRP_DEST_RGB2_PTR 0x1c |
| 142 | #define PRP_DEST_Y_PTR 0x20 |
| 143 | #define PRP_DEST_CB_PTR 0x24 |
| 144 | #define PRP_DEST_CR_PTR 0x28 |
| 145 | #define PRP_SRC_FRAME_SIZE 0x2c |
| 146 | #define PRP_DEST_CH1_LINE_STRIDE 0x30 |
| 147 | #define PRP_SRC_PIXEL_FORMAT_CNTL 0x34 |
| 148 | #define PRP_CH1_PIXEL_FORMAT_CNTL 0x38 |
| 149 | #define PRP_CH1_OUT_IMAGE_SIZE 0x3c |
| 150 | #define PRP_CH2_OUT_IMAGE_SIZE 0x40 |
| 151 | #define PRP_SRC_LINE_STRIDE 0x44 |
| 152 | #define PRP_CSC_COEF_012 0x48 |
| 153 | #define PRP_CSC_COEF_345 0x4c |
| 154 | #define PRP_CSC_COEF_678 0x50 |
| 155 | #define PRP_CH1_RZ_HORI_COEF1 0x54 |
| 156 | #define PRP_CH1_RZ_HORI_COEF2 0x58 |
| 157 | #define PRP_CH1_RZ_HORI_VALID 0x5c |
| 158 | #define PRP_CH1_RZ_VERT_COEF1 0x60 |
| 159 | #define PRP_CH1_RZ_VERT_COEF2 0x64 |
| 160 | #define PRP_CH1_RZ_VERT_VALID 0x68 |
| 161 | #define PRP_CH2_RZ_HORI_COEF1 0x6c |
| 162 | #define PRP_CH2_RZ_HORI_COEF2 0x70 |
| 163 | #define PRP_CH2_RZ_HORI_VALID 0x74 |
| 164 | #define PRP_CH2_RZ_VERT_COEF1 0x78 |
| 165 | #define PRP_CH2_RZ_VERT_COEF2 0x7c |
| 166 | #define PRP_CH2_RZ_VERT_VALID 0x80 |
| 167 | |
| 168 | #define PRP_CNTL_CH1EN (1 << 0) |
| 169 | #define PRP_CNTL_CH2EN (1 << 1) |
| 170 | #define PRP_CNTL_CSIEN (1 << 2) |
| 171 | #define PRP_CNTL_DATA_IN_YUV420 (0 << 3) |
| 172 | #define PRP_CNTL_DATA_IN_YUV422 (1 << 3) |
| 173 | #define PRP_CNTL_DATA_IN_RGB16 (2 << 3) |
| 174 | #define PRP_CNTL_DATA_IN_RGB32 (3 << 3) |
| 175 | #define PRP_CNTL_CH1_OUT_RGB8 (0 << 5) |
| 176 | #define PRP_CNTL_CH1_OUT_RGB16 (1 << 5) |
| 177 | #define PRP_CNTL_CH1_OUT_RGB32 (2 << 5) |
| 178 | #define PRP_CNTL_CH1_OUT_YUV422 (3 << 5) |
| 179 | #define PRP_CNTL_CH2_OUT_YUV420 (0 << 7) |
| 180 | #define PRP_CNTL_CH2_OUT_YUV422 (1 << 7) |
| 181 | #define PRP_CNTL_CH2_OUT_YUV444 (2 << 7) |
| 182 | #define PRP_CNTL_CH1_LEN (1 << 9) |
| 183 | #define PRP_CNTL_CH2_LEN (1 << 10) |
| 184 | #define PRP_CNTL_SKIP_FRAME (1 << 11) |
| 185 | #define PRP_CNTL_SWRST (1 << 12) |
| 186 | #define PRP_CNTL_CLKEN (1 << 13) |
| 187 | #define PRP_CNTL_WEN (1 << 14) |
| 188 | #define PRP_CNTL_CH1BYP (1 << 15) |
| 189 | #define PRP_CNTL_IN_TSKIP(x) ((x) << 16) |
| 190 | #define PRP_CNTL_CH1_TSKIP(x) ((x) << 19) |
| 191 | #define PRP_CNTL_CH2_TSKIP(x) ((x) << 22) |
| 192 | #define PRP_CNTL_INPUT_FIFO_LEVEL(x) ((x) << 25) |
| 193 | #define PRP_CNTL_RZ_FIFO_LEVEL(x) ((x) << 27) |
| 194 | #define PRP_CNTL_CH2B1EN (1 << 29) |
| 195 | #define PRP_CNTL_CH2B2EN (1 << 30) |
| 196 | #define PRP_CNTL_CH2FEN (1 << 31) |
| 197 | |
| 198 | /* IRQ Enable and status register */ |
| 199 | #define PRP_INTR_RDERR (1 << 0) |
| 200 | #define PRP_INTR_CH1WERR (1 << 1) |
| 201 | #define PRP_INTR_CH2WERR (1 << 2) |
| 202 | #define PRP_INTR_CH1FC (1 << 3) |
| 203 | #define PRP_INTR_CH2FC (1 << 5) |
| 204 | #define PRP_INTR_LBOVF (1 << 7) |
| 205 | #define PRP_INTR_CH2OVF (1 << 8) |
| 206 | |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 207 | #define MAX_VIDEO_MEM 16 |
| 208 | |
Javier Martin | f410991 | 2011-12-14 13:30:14 -0300 | [diff] [blame] | 209 | struct mx2_prp_cfg { |
| 210 | int channel; |
| 211 | u32 in_fmt; |
| 212 | u32 out_fmt; |
| 213 | u32 src_pixel; |
| 214 | u32 ch1_pixel; |
| 215 | u32 irq_flags; |
| 216 | }; |
| 217 | |
| 218 | /* prp configuration for a client-host fmt pair */ |
| 219 | struct mx2_fmt_cfg { |
| 220 | enum v4l2_mbus_pixelcode in_fmt; |
| 221 | u32 out_fmt; |
| 222 | struct mx2_prp_cfg cfg; |
| 223 | }; |
| 224 | |
Javier Martin | c6a41e3 | 2012-01-30 09:14:10 -0300 | [diff] [blame] | 225 | enum mx2_buffer_state { |
| 226 | MX2_STATE_QUEUED, |
| 227 | MX2_STATE_ACTIVE, |
| 228 | MX2_STATE_DONE, |
| 229 | }; |
| 230 | |
| 231 | /* buffer for one video frame */ |
| 232 | struct mx2_buffer { |
| 233 | /* common v4l buffer stuff -- must be first */ |
| 234 | struct vb2_buffer vb; |
| 235 | struct list_head queue; |
| 236 | enum mx2_buffer_state state; |
| 237 | |
Javier Martin | cdc9d6f | 2012-02-07 07:14:42 -0300 | [diff] [blame] | 238 | int bufnum; |
| 239 | bool discard; |
Javier Martin | c6a41e3 | 2012-01-30 09:14:10 -0300 | [diff] [blame] | 240 | }; |
| 241 | |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 242 | struct mx2_camera_dev { |
| 243 | struct device *dev; |
| 244 | struct soc_camera_host soc_host; |
| 245 | struct soc_camera_device *icd; |
| 246 | struct clk *clk_csi, *clk_emma; |
| 247 | |
| 248 | unsigned int irq_csi, irq_emma; |
| 249 | void __iomem *base_csi, *base_emma; |
| 250 | unsigned long base_dma; |
| 251 | |
| 252 | struct mx2_camera_platform_data *pdata; |
| 253 | struct resource *res_csi, *res_emma; |
| 254 | unsigned long platform_flags; |
| 255 | |
| 256 | struct list_head capture; |
| 257 | struct list_head active_bufs; |
Javier Martin | cdc9d6f | 2012-02-07 07:14:42 -0300 | [diff] [blame] | 258 | struct list_head discard; |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 259 | |
| 260 | spinlock_t lock; |
| 261 | |
| 262 | int dma; |
| 263 | struct mx2_buffer *active; |
| 264 | struct mx2_buffer *fb1_active; |
| 265 | struct mx2_buffer *fb2_active; |
| 266 | |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 267 | u32 csicr1; |
| 268 | |
Javier Martin | cdc9d6f | 2012-02-07 07:14:42 -0300 | [diff] [blame] | 269 | struct mx2_buffer buf_discard[2]; |
Baruch Siach | 79d3c2c | 2010-07-27 08:03:30 +0300 | [diff] [blame] | 270 | void *discard_buffer; |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 271 | dma_addr_t discard_buffer_dma; |
| 272 | size_t discard_size; |
Javier Martin | f410991 | 2011-12-14 13:30:14 -0300 | [diff] [blame] | 273 | struct mx2_fmt_cfg *emma_prp; |
Javier Martin | ccd1a49 | 2011-12-22 12:12:00 -0300 | [diff] [blame] | 274 | u32 frame_count; |
Javier Martin | c6a41e3 | 2012-01-30 09:14:10 -0300 | [diff] [blame] | 275 | struct vb2_alloc_ctx *alloc_ctx; |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 276 | }; |
| 277 | |
Javier Martin | f410991 | 2011-12-14 13:30:14 -0300 | [diff] [blame] | 278 | static struct mx2_fmt_cfg mx27_emma_prp_table[] = { |
| 279 | /* |
| 280 | * This is a generic configuration which is valid for most |
| 281 | * prp input-output format combinations. |
| 282 | * We set the incomming and outgoing pixelformat to a |
| 283 | * 16 Bit wide format and adjust the bytesperline |
| 284 | * accordingly. With this configuration the inputdata |
| 285 | * will not be changed by the emma and could be any type |
| 286 | * of 16 Bit Pixelformat. |
| 287 | */ |
| 288 | { |
| 289 | .in_fmt = 0, |
| 290 | .out_fmt = 0, |
| 291 | .cfg = { |
| 292 | .channel = 1, |
| 293 | .in_fmt = PRP_CNTL_DATA_IN_RGB16, |
| 294 | .out_fmt = PRP_CNTL_CH1_OUT_RGB16, |
| 295 | .src_pixel = 0x2ca00565, /* RGB565 */ |
| 296 | .ch1_pixel = 0x2ca00565, /* RGB565 */ |
| 297 | .irq_flags = PRP_INTR_RDERR | PRP_INTR_CH1WERR | |
| 298 | PRP_INTR_CH1FC | PRP_INTR_LBOVF, |
| 299 | } |
| 300 | }, |
| 301 | { |
| 302 | .in_fmt = V4L2_MBUS_FMT_YUYV8_2X8, |
| 303 | .out_fmt = V4L2_PIX_FMT_YUV420, |
| 304 | .cfg = { |
| 305 | .channel = 2, |
| 306 | .in_fmt = PRP_CNTL_DATA_IN_YUV422, |
| 307 | .out_fmt = PRP_CNTL_CH2_OUT_YUV420, |
| 308 | .src_pixel = 0x22000888, /* YUV422 (YUYV) */ |
| 309 | .irq_flags = PRP_INTR_RDERR | PRP_INTR_CH2WERR | |
| 310 | PRP_INTR_CH2FC | PRP_INTR_LBOVF | |
| 311 | PRP_INTR_CH2OVF, |
| 312 | } |
| 313 | }, |
| 314 | }; |
| 315 | |
| 316 | static struct mx2_fmt_cfg *mx27_emma_prp_get_format( |
| 317 | enum v4l2_mbus_pixelcode in_fmt, |
| 318 | u32 out_fmt) |
| 319 | { |
| 320 | int i; |
| 321 | |
| 322 | for (i = 1; i < ARRAY_SIZE(mx27_emma_prp_table); i++) |
| 323 | if ((mx27_emma_prp_table[i].in_fmt == in_fmt) && |
| 324 | (mx27_emma_prp_table[i].out_fmt == out_fmt)) { |
| 325 | return &mx27_emma_prp_table[i]; |
| 326 | } |
| 327 | /* If no match return the most generic configuration */ |
| 328 | return &mx27_emma_prp_table[0]; |
| 329 | }; |
| 330 | |
Javier Martin | cdc9d6f | 2012-02-07 07:14:42 -0300 | [diff] [blame] | 331 | static void mx27_update_emma_buf(struct mx2_camera_dev *pcdev, |
| 332 | unsigned long phys, int bufnum) |
| 333 | { |
| 334 | struct mx2_fmt_cfg *prp = pcdev->emma_prp; |
| 335 | |
| 336 | if (prp->cfg.channel == 1) { |
| 337 | writel(phys, pcdev->base_emma + |
| 338 | PRP_DEST_RGB1_PTR + 4 * bufnum); |
| 339 | } else { |
| 340 | writel(phys, pcdev->base_emma + |
| 341 | PRP_DEST_Y_PTR - 0x14 * bufnum); |
| 342 | if (prp->out_fmt == V4L2_PIX_FMT_YUV420) { |
| 343 | u32 imgsize = pcdev->icd->user_height * |
| 344 | pcdev->icd->user_width; |
| 345 | |
| 346 | writel(phys + imgsize, pcdev->base_emma + |
| 347 | PRP_DEST_CB_PTR - 0x14 * bufnum); |
| 348 | writel(phys + ((5 * imgsize) / 4), pcdev->base_emma + |
| 349 | PRP_DEST_CR_PTR - 0x14 * bufnum); |
| 350 | } |
| 351 | } |
| 352 | } |
| 353 | |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 354 | static void mx2_camera_deactivate(struct mx2_camera_dev *pcdev) |
| 355 | { |
| 356 | unsigned long flags; |
| 357 | |
| 358 | clk_disable(pcdev->clk_csi); |
| 359 | writel(0, pcdev->base_csi + CSICR1); |
Sascha Hauer | 2c9ba37 | 2012-02-20 07:55:24 -0300 | [diff] [blame] | 360 | if (cpu_is_mx27()) { |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 361 | writel(0, pcdev->base_emma + PRP_CNTL); |
| 362 | } else if (cpu_is_mx25()) { |
| 363 | spin_lock_irqsave(&pcdev->lock, flags); |
| 364 | pcdev->fb1_active = NULL; |
| 365 | pcdev->fb2_active = NULL; |
| 366 | writel(0, pcdev->base_csi + CSIDMASA_FB1); |
| 367 | writel(0, pcdev->base_csi + CSIDMASA_FB2); |
| 368 | spin_unlock_irqrestore(&pcdev->lock, flags); |
| 369 | } |
| 370 | } |
| 371 | |
| 372 | /* |
| 373 | * The following two functions absolutely depend on the fact, that |
| 374 | * there can be only one camera on mx2 camera sensor interface |
| 375 | */ |
| 376 | static int mx2_camera_add_device(struct soc_camera_device *icd) |
| 377 | { |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 378 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 379 | struct mx2_camera_dev *pcdev = ici->priv; |
| 380 | int ret; |
| 381 | u32 csicr1; |
| 382 | |
| 383 | if (pcdev->icd) |
| 384 | return -EBUSY; |
| 385 | |
| 386 | ret = clk_enable(pcdev->clk_csi); |
| 387 | if (ret < 0) |
| 388 | return ret; |
| 389 | |
| 390 | csicr1 = CSICR1_MCLKEN; |
| 391 | |
Sascha Hauer | 2c9ba37 | 2012-02-20 07:55:24 -0300 | [diff] [blame] | 392 | if (cpu_is_mx27()) { |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 393 | csicr1 |= CSICR1_PRP_IF_EN | CSICR1_FCC | |
| 394 | CSICR1_RXFF_LEVEL(0); |
| 395 | } else if (cpu_is_mx27()) |
| 396 | csicr1 |= CSICR1_SOF_INTEN | CSICR1_RXFF_LEVEL(2); |
| 397 | |
| 398 | pcdev->csicr1 = csicr1; |
| 399 | writel(pcdev->csicr1, pcdev->base_csi + CSICR1); |
| 400 | |
| 401 | pcdev->icd = icd; |
Javier Martin | cdc9d6f | 2012-02-07 07:14:42 -0300 | [diff] [blame] | 402 | pcdev->frame_count = 0; |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 403 | |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 404 | dev_info(icd->parent, "Camera driver attached to camera %d\n", |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 405 | icd->devnum); |
| 406 | |
| 407 | return 0; |
| 408 | } |
| 409 | |
| 410 | static void mx2_camera_remove_device(struct soc_camera_device *icd) |
| 411 | { |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 412 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 413 | struct mx2_camera_dev *pcdev = ici->priv; |
| 414 | |
| 415 | BUG_ON(icd != pcdev->icd); |
| 416 | |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 417 | dev_info(icd->parent, "Camera driver detached from camera %d\n", |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 418 | icd->devnum); |
| 419 | |
| 420 | mx2_camera_deactivate(pcdev); |
| 421 | |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 422 | pcdev->icd = NULL; |
| 423 | } |
| 424 | |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 425 | static void mx25_camera_frame_done(struct mx2_camera_dev *pcdev, int fb, |
| 426 | int state) |
| 427 | { |
Javier Martin | c6a41e3 | 2012-01-30 09:14:10 -0300 | [diff] [blame] | 428 | struct vb2_buffer *vb; |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 429 | struct mx2_buffer *buf; |
| 430 | struct mx2_buffer **fb_active = fb == 1 ? &pcdev->fb1_active : |
| 431 | &pcdev->fb2_active; |
| 432 | u32 fb_reg = fb == 1 ? CSIDMASA_FB1 : CSIDMASA_FB2; |
| 433 | unsigned long flags; |
| 434 | |
| 435 | spin_lock_irqsave(&pcdev->lock, flags); |
| 436 | |
Baruch Siach | 5384a12 | 2010-07-27 09:06:07 -0300 | [diff] [blame] | 437 | if (*fb_active == NULL) |
| 438 | goto out; |
| 439 | |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 440 | vb = &(*fb_active)->vb; |
Javier Martin | c6a41e3 | 2012-01-30 09:14:10 -0300 | [diff] [blame] | 441 | dev_dbg(pcdev->dev, "%s (vb=0x%p) 0x%p %lu\n", __func__, |
| 442 | vb, vb2_plane_vaddr(vb, 0), vb2_get_plane_payload(vb, 0)); |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 443 | |
Javier Martin | c6a41e3 | 2012-01-30 09:14:10 -0300 | [diff] [blame] | 444 | do_gettimeofday(&vb->v4l2_buf.timestamp); |
| 445 | vb->v4l2_buf.sequence++; |
| 446 | vb2_buffer_done(vb, VB2_BUF_STATE_DONE); |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 447 | |
| 448 | if (list_empty(&pcdev->capture)) { |
| 449 | buf = NULL; |
| 450 | writel(0, pcdev->base_csi + fb_reg); |
| 451 | } else { |
Javier Martin | a654ba1 | 2012-02-22 07:59:33 -0300 | [diff] [blame] | 452 | buf = list_first_entry(&pcdev->capture, struct mx2_buffer, |
Javier Martin | c6a41e3 | 2012-01-30 09:14:10 -0300 | [diff] [blame] | 453 | queue); |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 454 | vb = &buf->vb; |
Javier Martin | c6a41e3 | 2012-01-30 09:14:10 -0300 | [diff] [blame] | 455 | list_del(&buf->queue); |
| 456 | buf->state = MX2_STATE_ACTIVE; |
| 457 | writel(vb2_dma_contig_plane_dma_addr(vb, 0), |
| 458 | pcdev->base_csi + fb_reg); |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 459 | } |
| 460 | |
| 461 | *fb_active = buf; |
| 462 | |
Baruch Siach | 5384a12 | 2010-07-27 09:06:07 -0300 | [diff] [blame] | 463 | out: |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 464 | spin_unlock_irqrestore(&pcdev->lock, flags); |
| 465 | } |
| 466 | |
| 467 | static irqreturn_t mx25_camera_irq(int irq_csi, void *data) |
| 468 | { |
| 469 | struct mx2_camera_dev *pcdev = data; |
| 470 | u32 status = readl(pcdev->base_csi + CSISR); |
| 471 | |
| 472 | if (status & CSISR_DMA_TSF_FB1_INT) |
Javier Martin | c6a41e3 | 2012-01-30 09:14:10 -0300 | [diff] [blame] | 473 | mx25_camera_frame_done(pcdev, 1, MX2_STATE_DONE); |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 474 | else if (status & CSISR_DMA_TSF_FB2_INT) |
Javier Martin | c6a41e3 | 2012-01-30 09:14:10 -0300 | [diff] [blame] | 475 | mx25_camera_frame_done(pcdev, 2, MX2_STATE_DONE); |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 476 | |
| 477 | /* FIXME: handle CSISR_RFF_OR_INT */ |
| 478 | |
| 479 | writel(status, pcdev->base_csi + CSISR); |
| 480 | |
| 481 | return IRQ_HANDLED; |
| 482 | } |
| 483 | |
| 484 | /* |
| 485 | * Videobuf operations |
| 486 | */ |
Javier Martin | c6a41e3 | 2012-01-30 09:14:10 -0300 | [diff] [blame] | 487 | static int mx2_videobuf_setup(struct vb2_queue *vq, |
| 488 | const struct v4l2_format *fmt, |
| 489 | unsigned int *count, unsigned int *num_planes, |
| 490 | unsigned int sizes[], void *alloc_ctxs[]) |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 491 | { |
Javier Martin | c6a41e3 | 2012-01-30 09:14:10 -0300 | [diff] [blame] | 492 | struct soc_camera_device *icd = soc_camera_from_vb2q(vq); |
| 493 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
| 494 | struct mx2_camera_dev *pcdev = ici->priv; |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 495 | int bytes_per_line = soc_mbus_bytes_per_line(icd->user_width, |
| 496 | icd->current_fmt->host_fmt); |
| 497 | |
Javier Martin | c6a41e3 | 2012-01-30 09:14:10 -0300 | [diff] [blame] | 498 | dev_dbg(icd->parent, "count=%d, size=%d\n", *count, sizes[0]); |
| 499 | |
| 500 | /* TODO: support for VIDIOC_CREATE_BUFS not ready */ |
| 501 | if (fmt != NULL) |
| 502 | return -ENOTTY; |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 503 | |
| 504 | if (bytes_per_line < 0) |
| 505 | return bytes_per_line; |
| 506 | |
Javier Martin | c6a41e3 | 2012-01-30 09:14:10 -0300 | [diff] [blame] | 507 | alloc_ctxs[0] = pcdev->alloc_ctx; |
| 508 | |
| 509 | sizes[0] = bytes_per_line * icd->user_height; |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 510 | |
| 511 | if (0 == *count) |
| 512 | *count = 32; |
Javier Martin | c6a41e3 | 2012-01-30 09:14:10 -0300 | [diff] [blame] | 513 | if (!*num_planes && |
| 514 | sizes[0] * *count > MAX_VIDEO_MEM * 1024 * 1024) |
| 515 | *count = (MAX_VIDEO_MEM * 1024 * 1024) / sizes[0]; |
| 516 | |
| 517 | *num_planes = 1; |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 518 | |
| 519 | return 0; |
| 520 | } |
| 521 | |
Javier Martin | c6a41e3 | 2012-01-30 09:14:10 -0300 | [diff] [blame] | 522 | static int mx2_videobuf_prepare(struct vb2_buffer *vb) |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 523 | { |
Javier Martin | c6a41e3 | 2012-01-30 09:14:10 -0300 | [diff] [blame] | 524 | struct soc_camera_device *icd = soc_camera_from_vb2q(vb->vb2_queue); |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 525 | int bytes_per_line = soc_mbus_bytes_per_line(icd->user_width, |
| 526 | icd->current_fmt->host_fmt); |
| 527 | int ret = 0; |
| 528 | |
Javier Martin | c6a41e3 | 2012-01-30 09:14:10 -0300 | [diff] [blame] | 529 | dev_dbg(icd->parent, "%s (vb=0x%p) 0x%p %lu\n", __func__, |
| 530 | vb, vb2_plane_vaddr(vb, 0), vb2_get_plane_payload(vb, 0)); |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 531 | |
| 532 | if (bytes_per_line < 0) |
| 533 | return bytes_per_line; |
| 534 | |
| 535 | #ifdef DEBUG |
| 536 | /* |
| 537 | * This can be useful if you want to see if we actually fill |
| 538 | * the buffer with something |
| 539 | */ |
Javier Martin | c6a41e3 | 2012-01-30 09:14:10 -0300 | [diff] [blame] | 540 | memset((void *)vb2_plane_vaddr(vb, 0), |
| 541 | 0xaa, vb2_get_plane_payload(vb, 0)); |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 542 | #endif |
| 543 | |
Javier Martin | c6a41e3 | 2012-01-30 09:14:10 -0300 | [diff] [blame] | 544 | vb2_set_plane_payload(vb, 0, bytes_per_line * icd->user_height); |
| 545 | if (vb2_plane_vaddr(vb, 0) && |
| 546 | vb2_get_plane_payload(vb, 0) > vb2_plane_size(vb, 0)) { |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 547 | ret = -EINVAL; |
| 548 | goto out; |
| 549 | } |
| 550 | |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 551 | return 0; |
| 552 | |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 553 | out: |
| 554 | return ret; |
| 555 | } |
| 556 | |
Javier Martin | c6a41e3 | 2012-01-30 09:14:10 -0300 | [diff] [blame] | 557 | static void mx2_videobuf_queue(struct vb2_buffer *vb) |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 558 | { |
Javier Martin | c6a41e3 | 2012-01-30 09:14:10 -0300 | [diff] [blame] | 559 | struct soc_camera_device *icd = soc_camera_from_vb2q(vb->vb2_queue); |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 560 | struct soc_camera_host *ici = |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 561 | to_soc_camera_host(icd->parent); |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 562 | struct mx2_camera_dev *pcdev = ici->priv; |
| 563 | struct mx2_buffer *buf = container_of(vb, struct mx2_buffer, vb); |
| 564 | unsigned long flags; |
| 565 | |
Javier Martin | c6a41e3 | 2012-01-30 09:14:10 -0300 | [diff] [blame] | 566 | dev_dbg(icd->parent, "%s (vb=0x%p) 0x%p %lu\n", __func__, |
| 567 | vb, vb2_plane_vaddr(vb, 0), vb2_get_plane_payload(vb, 0)); |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 568 | |
| 569 | spin_lock_irqsave(&pcdev->lock, flags); |
| 570 | |
Javier Martin | c6a41e3 | 2012-01-30 09:14:10 -0300 | [diff] [blame] | 571 | buf->state = MX2_STATE_QUEUED; |
| 572 | list_add_tail(&buf->queue, &pcdev->capture); |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 573 | |
Sascha Hauer | 2c9ba37 | 2012-02-20 07:55:24 -0300 | [diff] [blame] | 574 | if (cpu_is_mx25()) { |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 575 | u32 csicr3, dma_inten = 0; |
| 576 | |
| 577 | if (pcdev->fb1_active == NULL) { |
Javier Martin | c6a41e3 | 2012-01-30 09:14:10 -0300 | [diff] [blame] | 578 | writel(vb2_dma_contig_plane_dma_addr(vb, 0), |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 579 | pcdev->base_csi + CSIDMASA_FB1); |
| 580 | pcdev->fb1_active = buf; |
| 581 | dma_inten = CSICR1_FB1_DMA_INTEN; |
| 582 | } else if (pcdev->fb2_active == NULL) { |
Javier Martin | c6a41e3 | 2012-01-30 09:14:10 -0300 | [diff] [blame] | 583 | writel(vb2_dma_contig_plane_dma_addr(vb, 0), |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 584 | pcdev->base_csi + CSIDMASA_FB2); |
| 585 | pcdev->fb2_active = buf; |
| 586 | dma_inten = CSICR1_FB2_DMA_INTEN; |
| 587 | } |
| 588 | |
| 589 | if (dma_inten) { |
Javier Martin | c6a41e3 | 2012-01-30 09:14:10 -0300 | [diff] [blame] | 590 | list_del(&buf->queue); |
| 591 | buf->state = MX2_STATE_ACTIVE; |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 592 | |
| 593 | csicr3 = readl(pcdev->base_csi + CSICR3); |
| 594 | |
| 595 | /* Reflash DMA */ |
| 596 | writel(csicr3 | CSICR3_DMA_REFLASH_RFF, |
| 597 | pcdev->base_csi + CSICR3); |
| 598 | |
| 599 | /* clear & enable interrupts */ |
| 600 | writel(dma_inten, pcdev->base_csi + CSISR); |
| 601 | pcdev->csicr1 |= dma_inten; |
| 602 | writel(pcdev->csicr1, pcdev->base_csi + CSICR1); |
| 603 | |
| 604 | /* enable DMA */ |
| 605 | csicr3 |= CSICR3_DMA_REQ_EN_RFF | CSICR3_RXFF_LEVEL(1); |
| 606 | writel(csicr3, pcdev->base_csi + CSICR3); |
| 607 | } |
| 608 | } |
| 609 | |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 610 | spin_unlock_irqrestore(&pcdev->lock, flags); |
| 611 | } |
| 612 | |
Javier Martin | c6a41e3 | 2012-01-30 09:14:10 -0300 | [diff] [blame] | 613 | static void mx2_videobuf_release(struct vb2_buffer *vb) |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 614 | { |
Javier Martin | c6a41e3 | 2012-01-30 09:14:10 -0300 | [diff] [blame] | 615 | struct soc_camera_device *icd = soc_camera_from_vb2q(vb->vb2_queue); |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 616 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 617 | struct mx2_camera_dev *pcdev = ici->priv; |
| 618 | struct mx2_buffer *buf = container_of(vb, struct mx2_buffer, vb); |
| 619 | unsigned long flags; |
| 620 | |
| 621 | #ifdef DEBUG |
Javier Martin | c6a41e3 | 2012-01-30 09:14:10 -0300 | [diff] [blame] | 622 | dev_dbg(icd->parent, "%s (vb=0x%p) 0x%p %lu\n", __func__, |
| 623 | vb, vb2_plane_vaddr(vb, 0), vb2_get_plane_payload(vb, 0)); |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 624 | |
Javier Martin | c6a41e3 | 2012-01-30 09:14:10 -0300 | [diff] [blame] | 625 | switch (buf->state) { |
| 626 | case MX2_STATE_ACTIVE: |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 627 | dev_info(icd->parent, "%s (active)\n", __func__); |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 628 | break; |
Javier Martin | c6a41e3 | 2012-01-30 09:14:10 -0300 | [diff] [blame] | 629 | case MX2_STATE_QUEUED: |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 630 | dev_info(icd->parent, "%s (queued)\n", __func__); |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 631 | break; |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 632 | default: |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 633 | dev_info(icd->parent, "%s (unknown) %d\n", __func__, |
Javier Martin | c6a41e3 | 2012-01-30 09:14:10 -0300 | [diff] [blame] | 634 | buf->state); |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 635 | break; |
| 636 | } |
| 637 | #endif |
| 638 | |
| 639 | /* |
| 640 | * Terminate only queued but inactive buffers. Active buffers are |
| 641 | * released when they become inactive after videobuf_waiton(). |
| 642 | * |
Baruch Siach | 7c6b731 | 2010-07-27 09:06:10 -0300 | [diff] [blame] | 643 | * FIXME: implement forced termination of active buffers for mx27 and |
| 644 | * mx27 eMMA, so that the user won't get stuck in an uninterruptible |
| 645 | * state. This requires a specific handling for each of the these DMA |
| 646 | * types. |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 647 | */ |
Javier Martin | c6a41e3 | 2012-01-30 09:14:10 -0300 | [diff] [blame] | 648 | |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 649 | spin_lock_irqsave(&pcdev->lock, flags); |
Javier Martin | c6a41e3 | 2012-01-30 09:14:10 -0300 | [diff] [blame] | 650 | if (cpu_is_mx25() && buf->state == MX2_STATE_ACTIVE) { |
Baruch Siach | 7c6b731 | 2010-07-27 09:06:10 -0300 | [diff] [blame] | 651 | if (pcdev->fb1_active == buf) { |
| 652 | pcdev->csicr1 &= ~CSICR1_FB1_DMA_INTEN; |
| 653 | writel(0, pcdev->base_csi + CSIDMASA_FB1); |
| 654 | pcdev->fb1_active = NULL; |
| 655 | } else if (pcdev->fb2_active == buf) { |
| 656 | pcdev->csicr1 &= ~CSICR1_FB2_DMA_INTEN; |
| 657 | writel(0, pcdev->base_csi + CSIDMASA_FB2); |
| 658 | pcdev->fb2_active = NULL; |
| 659 | } |
| 660 | writel(pcdev->csicr1, pcdev->base_csi + CSICR1); |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 661 | } |
| 662 | spin_unlock_irqrestore(&pcdev->lock, flags); |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 663 | } |
| 664 | |
Javier Martin | cdc9d6f | 2012-02-07 07:14:42 -0300 | [diff] [blame] | 665 | static void mx27_camera_emma_buf_init(struct soc_camera_device *icd, |
| 666 | int bytesperline) |
| 667 | { |
| 668 | struct soc_camera_host *ici = |
| 669 | to_soc_camera_host(icd->parent); |
| 670 | struct mx2_camera_dev *pcdev = ici->priv; |
| 671 | struct mx2_fmt_cfg *prp = pcdev->emma_prp; |
| 672 | |
| 673 | writel((icd->user_width << 16) | icd->user_height, |
| 674 | pcdev->base_emma + PRP_SRC_FRAME_SIZE); |
| 675 | writel(prp->cfg.src_pixel, |
| 676 | pcdev->base_emma + PRP_SRC_PIXEL_FORMAT_CNTL); |
| 677 | if (prp->cfg.channel == 1) { |
| 678 | writel((icd->user_width << 16) | icd->user_height, |
| 679 | pcdev->base_emma + PRP_CH1_OUT_IMAGE_SIZE); |
| 680 | writel(bytesperline, |
| 681 | pcdev->base_emma + PRP_DEST_CH1_LINE_STRIDE); |
| 682 | writel(prp->cfg.ch1_pixel, |
| 683 | pcdev->base_emma + PRP_CH1_PIXEL_FORMAT_CNTL); |
| 684 | } else { /* channel 2 */ |
| 685 | writel((icd->user_width << 16) | icd->user_height, |
| 686 | pcdev->base_emma + PRP_CH2_OUT_IMAGE_SIZE); |
| 687 | } |
| 688 | |
| 689 | /* Enable interrupts */ |
| 690 | writel(prp->cfg.irq_flags, pcdev->base_emma + PRP_INTR_CNTL); |
| 691 | } |
| 692 | |
Javier Martin | fb51cbd | 2012-01-30 09:14:11 -0300 | [diff] [blame] | 693 | static int mx2_start_streaming(struct vb2_queue *q, unsigned int count) |
| 694 | { |
| 695 | struct soc_camera_device *icd = soc_camera_from_vb2q(q); |
| 696 | struct soc_camera_host *ici = |
| 697 | to_soc_camera_host(icd->parent); |
| 698 | struct mx2_camera_dev *pcdev = ici->priv; |
| 699 | struct mx2_fmt_cfg *prp = pcdev->emma_prp; |
Javier Martin | cdc9d6f | 2012-02-07 07:14:42 -0300 | [diff] [blame] | 700 | struct vb2_buffer *vb; |
| 701 | struct mx2_buffer *buf; |
| 702 | unsigned long phys; |
| 703 | int bytesperline; |
Javier Martin | fb51cbd | 2012-01-30 09:14:11 -0300 | [diff] [blame] | 704 | |
| 705 | if (cpu_is_mx27()) { |
| 706 | unsigned long flags; |
| 707 | if (count < 2) |
| 708 | return -EINVAL; |
| 709 | |
| 710 | spin_lock_irqsave(&pcdev->lock, flags); |
Javier Martin | cdc9d6f | 2012-02-07 07:14:42 -0300 | [diff] [blame] | 711 | |
Javier Martin | a654ba1 | 2012-02-22 07:59:33 -0300 | [diff] [blame] | 712 | buf = list_first_entry(&pcdev->capture, struct mx2_buffer, |
| 713 | queue); |
Javier Martin | cdc9d6f | 2012-02-07 07:14:42 -0300 | [diff] [blame] | 714 | buf->bufnum = 0; |
| 715 | vb = &buf->vb; |
| 716 | buf->state = MX2_STATE_ACTIVE; |
| 717 | |
| 718 | phys = vb2_dma_contig_plane_dma_addr(vb, 0); |
| 719 | mx27_update_emma_buf(pcdev, phys, buf->bufnum); |
| 720 | list_move_tail(pcdev->capture.next, &pcdev->active_bufs); |
| 721 | |
Javier Martin | a654ba1 | 2012-02-22 07:59:33 -0300 | [diff] [blame] | 722 | buf = list_first_entry(&pcdev->capture, struct mx2_buffer, |
| 723 | queue); |
Javier Martin | cdc9d6f | 2012-02-07 07:14:42 -0300 | [diff] [blame] | 724 | buf->bufnum = 1; |
| 725 | vb = &buf->vb; |
| 726 | buf->state = MX2_STATE_ACTIVE; |
| 727 | |
| 728 | phys = vb2_dma_contig_plane_dma_addr(vb, 0); |
| 729 | mx27_update_emma_buf(pcdev, phys, buf->bufnum); |
| 730 | list_move_tail(pcdev->capture.next, &pcdev->active_bufs); |
| 731 | |
| 732 | bytesperline = soc_mbus_bytes_per_line(icd->user_width, |
| 733 | icd->current_fmt->host_fmt); |
| 734 | if (bytesperline < 0) |
| 735 | return bytesperline; |
| 736 | |
| 737 | /* |
| 738 | * I didn't manage to properly enable/disable the prp |
| 739 | * on a per frame basis during running transfers, |
| 740 | * thus we allocate a buffer here and use it to |
| 741 | * discard frames when no buffer is available. |
| 742 | * Feel free to work on this ;) |
| 743 | */ |
| 744 | pcdev->discard_size = icd->user_height * bytesperline; |
| 745 | pcdev->discard_buffer = dma_alloc_coherent(ici->v4l2_dev.dev, |
| 746 | pcdev->discard_size, &pcdev->discard_buffer_dma, |
| 747 | GFP_KERNEL); |
| 748 | if (!pcdev->discard_buffer) |
| 749 | return -ENOMEM; |
| 750 | |
| 751 | pcdev->buf_discard[0].discard = true; |
| 752 | list_add_tail(&pcdev->buf_discard[0].queue, |
| 753 | &pcdev->discard); |
| 754 | |
| 755 | pcdev->buf_discard[1].discard = true; |
| 756 | list_add_tail(&pcdev->buf_discard[1].queue, |
| 757 | &pcdev->discard); |
| 758 | |
| 759 | mx27_camera_emma_buf_init(icd, bytesperline); |
| 760 | |
Javier Martin | fb51cbd | 2012-01-30 09:14:11 -0300 | [diff] [blame] | 761 | if (prp->cfg.channel == 1) { |
| 762 | writel(PRP_CNTL_CH1EN | |
| 763 | PRP_CNTL_CSIEN | |
| 764 | prp->cfg.in_fmt | |
| 765 | prp->cfg.out_fmt | |
| 766 | PRP_CNTL_CH1_LEN | |
| 767 | PRP_CNTL_CH1BYP | |
| 768 | PRP_CNTL_CH1_TSKIP(0) | |
| 769 | PRP_CNTL_IN_TSKIP(0), |
| 770 | pcdev->base_emma + PRP_CNTL); |
| 771 | } else { |
| 772 | writel(PRP_CNTL_CH2EN | |
| 773 | PRP_CNTL_CSIEN | |
| 774 | prp->cfg.in_fmt | |
| 775 | prp->cfg.out_fmt | |
| 776 | PRP_CNTL_CH2_LEN | |
| 777 | PRP_CNTL_CH2_TSKIP(0) | |
| 778 | PRP_CNTL_IN_TSKIP(0), |
| 779 | pcdev->base_emma + PRP_CNTL); |
| 780 | } |
| 781 | spin_unlock_irqrestore(&pcdev->lock, flags); |
| 782 | } |
| 783 | |
| 784 | return 0; |
| 785 | } |
| 786 | |
| 787 | static int mx2_stop_streaming(struct vb2_queue *q) |
| 788 | { |
| 789 | struct soc_camera_device *icd = soc_camera_from_vb2q(q); |
| 790 | struct soc_camera_host *ici = |
| 791 | to_soc_camera_host(icd->parent); |
| 792 | struct mx2_camera_dev *pcdev = ici->priv; |
| 793 | struct mx2_fmt_cfg *prp = pcdev->emma_prp; |
| 794 | unsigned long flags; |
Javier Martin | cdc9d6f | 2012-02-07 07:14:42 -0300 | [diff] [blame] | 795 | void *b; |
Javier Martin | fb51cbd | 2012-01-30 09:14:11 -0300 | [diff] [blame] | 796 | u32 cntl; |
| 797 | |
Javier Martin | fb51cbd | 2012-01-30 09:14:11 -0300 | [diff] [blame] | 798 | if (cpu_is_mx27()) { |
Javier Martin | cdc9d6f | 2012-02-07 07:14:42 -0300 | [diff] [blame] | 799 | spin_lock_irqsave(&pcdev->lock, flags); |
| 800 | |
Javier Martin | fb51cbd | 2012-01-30 09:14:11 -0300 | [diff] [blame] | 801 | cntl = readl(pcdev->base_emma + PRP_CNTL); |
| 802 | if (prp->cfg.channel == 1) { |
| 803 | writel(cntl & ~PRP_CNTL_CH1EN, |
| 804 | pcdev->base_emma + PRP_CNTL); |
| 805 | } else { |
| 806 | writel(cntl & ~PRP_CNTL_CH2EN, |
| 807 | pcdev->base_emma + PRP_CNTL); |
| 808 | } |
Javier Martin | cdc9d6f | 2012-02-07 07:14:42 -0300 | [diff] [blame] | 809 | INIT_LIST_HEAD(&pcdev->capture); |
| 810 | INIT_LIST_HEAD(&pcdev->active_bufs); |
| 811 | INIT_LIST_HEAD(&pcdev->discard); |
| 812 | |
| 813 | b = pcdev->discard_buffer; |
| 814 | pcdev->discard_buffer = NULL; |
| 815 | |
| 816 | spin_unlock_irqrestore(&pcdev->lock, flags); |
| 817 | |
| 818 | dma_free_coherent(ici->v4l2_dev.dev, |
| 819 | pcdev->discard_size, b, pcdev->discard_buffer_dma); |
Javier Martin | fb51cbd | 2012-01-30 09:14:11 -0300 | [diff] [blame] | 820 | } |
Javier Martin | fb51cbd | 2012-01-30 09:14:11 -0300 | [diff] [blame] | 821 | |
| 822 | return 0; |
| 823 | } |
| 824 | |
Javier Martin | c6a41e3 | 2012-01-30 09:14:10 -0300 | [diff] [blame] | 825 | static struct vb2_ops mx2_videobuf_ops = { |
Javier Martin | fb51cbd | 2012-01-30 09:14:11 -0300 | [diff] [blame] | 826 | .queue_setup = mx2_videobuf_setup, |
| 827 | .buf_prepare = mx2_videobuf_prepare, |
| 828 | .buf_queue = mx2_videobuf_queue, |
| 829 | .buf_cleanup = mx2_videobuf_release, |
| 830 | .start_streaming = mx2_start_streaming, |
| 831 | .stop_streaming = mx2_stop_streaming, |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 832 | }; |
| 833 | |
Javier Martin | c6a41e3 | 2012-01-30 09:14:10 -0300 | [diff] [blame] | 834 | static int mx2_camera_init_videobuf(struct vb2_queue *q, |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 835 | struct soc_camera_device *icd) |
| 836 | { |
Javier Martin | c6a41e3 | 2012-01-30 09:14:10 -0300 | [diff] [blame] | 837 | q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE; |
| 838 | q->io_modes = VB2_MMAP | VB2_USERPTR; |
| 839 | q->drv_priv = icd; |
| 840 | q->ops = &mx2_videobuf_ops; |
| 841 | q->mem_ops = &vb2_dma_contig_memops; |
| 842 | q->buf_struct_size = sizeof(struct mx2_buffer); |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 843 | |
Javier Martin | c6a41e3 | 2012-01-30 09:14:10 -0300 | [diff] [blame] | 844 | return vb2_queue_init(q); |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 845 | } |
| 846 | |
Guennadi Liakhovetski | db592a2 | 2011-07-27 12:38:11 -0300 | [diff] [blame] | 847 | #define MX2_BUS_FLAGS (V4L2_MBUS_MASTER | \ |
| 848 | V4L2_MBUS_VSYNC_ACTIVE_HIGH | \ |
| 849 | V4L2_MBUS_VSYNC_ACTIVE_LOW | \ |
| 850 | V4L2_MBUS_HSYNC_ACTIVE_HIGH | \ |
| 851 | V4L2_MBUS_HSYNC_ACTIVE_LOW | \ |
| 852 | V4L2_MBUS_PCLK_SAMPLE_RISING | \ |
| 853 | V4L2_MBUS_PCLK_SAMPLE_FALLING | \ |
| 854 | V4L2_MBUS_DATA_ACTIVE_HIGH | \ |
| 855 | V4L2_MBUS_DATA_ACTIVE_LOW) |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 856 | |
| 857 | static int mx27_camera_emma_prp_reset(struct mx2_camera_dev *pcdev) |
| 858 | { |
| 859 | u32 cntl; |
| 860 | int count = 0; |
| 861 | |
| 862 | cntl = readl(pcdev->base_emma + PRP_CNTL); |
| 863 | writel(PRP_CNTL_SWRST, pcdev->base_emma + PRP_CNTL); |
| 864 | while (count++ < 100) { |
| 865 | if (!(readl(pcdev->base_emma + PRP_CNTL) & PRP_CNTL_SWRST)) |
| 866 | return 0; |
| 867 | barrier(); |
| 868 | udelay(1); |
| 869 | } |
| 870 | |
| 871 | return -ETIMEDOUT; |
| 872 | } |
| 873 | |
Guennadi Liakhovetski | 8843d11 | 2011-09-21 17:52:51 -0300 | [diff] [blame] | 874 | static int mx2_camera_set_bus_param(struct soc_camera_device *icd) |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 875 | { |
Guennadi Liakhovetski | db592a2 | 2011-07-27 12:38:11 -0300 | [diff] [blame] | 876 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
| 877 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 878 | struct mx2_camera_dev *pcdev = ici->priv; |
Guennadi Liakhovetski | db592a2 | 2011-07-27 12:38:11 -0300 | [diff] [blame] | 879 | struct v4l2_mbus_config cfg = {.type = V4L2_MBUS_PARALLEL,}; |
| 880 | unsigned long common_flags; |
| 881 | int ret; |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 882 | int bytesperline; |
| 883 | u32 csicr1 = pcdev->csicr1; |
| 884 | |
Guennadi Liakhovetski | db592a2 | 2011-07-27 12:38:11 -0300 | [diff] [blame] | 885 | ret = v4l2_subdev_call(sd, video, g_mbus_config, &cfg); |
| 886 | if (!ret) { |
| 887 | common_flags = soc_mbus_config_compatible(&cfg, MX2_BUS_FLAGS); |
| 888 | if (!common_flags) { |
| 889 | dev_warn(icd->parent, |
| 890 | "Flags incompatible: camera 0x%x, host 0x%x\n", |
| 891 | cfg.flags, MX2_BUS_FLAGS); |
| 892 | return -EINVAL; |
| 893 | } |
| 894 | } else if (ret != -ENOIOCTLCMD) { |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 895 | return ret; |
Guennadi Liakhovetski | db592a2 | 2011-07-27 12:38:11 -0300 | [diff] [blame] | 896 | } else { |
| 897 | common_flags = MX2_BUS_FLAGS; |
| 898 | } |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 899 | |
Guennadi Liakhovetski | db592a2 | 2011-07-27 12:38:11 -0300 | [diff] [blame] | 900 | if ((common_flags & V4L2_MBUS_HSYNC_ACTIVE_HIGH) && |
| 901 | (common_flags & V4L2_MBUS_HSYNC_ACTIVE_LOW)) { |
| 902 | if (pcdev->platform_flags & MX2_CAMERA_HSYNC_HIGH) |
| 903 | common_flags &= ~V4L2_MBUS_HSYNC_ACTIVE_LOW; |
| 904 | else |
| 905 | common_flags &= ~V4L2_MBUS_HSYNC_ACTIVE_HIGH; |
| 906 | } |
| 907 | |
| 908 | if ((common_flags & V4L2_MBUS_PCLK_SAMPLE_RISING) && |
| 909 | (common_flags & V4L2_MBUS_PCLK_SAMPLE_FALLING)) { |
| 910 | if (pcdev->platform_flags & MX2_CAMERA_PCLK_SAMPLE_RISING) |
| 911 | common_flags &= ~V4L2_MBUS_PCLK_SAMPLE_FALLING; |
| 912 | else |
| 913 | common_flags &= ~V4L2_MBUS_PCLK_SAMPLE_RISING; |
| 914 | } |
| 915 | |
| 916 | cfg.flags = common_flags; |
| 917 | ret = v4l2_subdev_call(sd, video, s_mbus_config, &cfg); |
| 918 | if (ret < 0 && ret != -ENOIOCTLCMD) { |
| 919 | dev_dbg(icd->parent, "camera s_mbus_config(0x%lx) returned %d\n", |
| 920 | common_flags, ret); |
| 921 | return ret; |
| 922 | } |
| 923 | |
| 924 | if (common_flags & V4L2_MBUS_PCLK_SAMPLE_RISING) |
Michael Grzeschik | d86097e | 2010-08-03 06:37:55 -0300 | [diff] [blame] | 925 | csicr1 |= CSICR1_REDGE; |
Guennadi Liakhovetski | db592a2 | 2011-07-27 12:38:11 -0300 | [diff] [blame] | 926 | if (common_flags & V4L2_MBUS_VSYNC_ACTIVE_HIGH) |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 927 | csicr1 |= CSICR1_SOF_POL; |
Guennadi Liakhovetski | db592a2 | 2011-07-27 12:38:11 -0300 | [diff] [blame] | 928 | if (common_flags & V4L2_MBUS_HSYNC_ACTIVE_HIGH) |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 929 | csicr1 |= CSICR1_HSYNC_POL; |
| 930 | if (pcdev->platform_flags & MX2_CAMERA_SWAP16) |
| 931 | csicr1 |= CSICR1_SWAP16_EN; |
| 932 | if (pcdev->platform_flags & MX2_CAMERA_EXT_VSYNC) |
| 933 | csicr1 |= CSICR1_EXT_VSYNC; |
| 934 | if (pcdev->platform_flags & MX2_CAMERA_CCIR) |
| 935 | csicr1 |= CSICR1_CCIR_EN; |
| 936 | if (pcdev->platform_flags & MX2_CAMERA_CCIR_INTERLACE) |
| 937 | csicr1 |= CSICR1_CCIR_MODE; |
| 938 | if (pcdev->platform_flags & MX2_CAMERA_GATED_CLOCK) |
| 939 | csicr1 |= CSICR1_GCLK_MODE; |
| 940 | if (pcdev->platform_flags & MX2_CAMERA_INV_DATA) |
| 941 | csicr1 |= CSICR1_INV_DATA; |
| 942 | if (pcdev->platform_flags & MX2_CAMERA_PACK_DIR_MSB) |
| 943 | csicr1 |= CSICR1_PACK_DIR; |
| 944 | |
| 945 | pcdev->csicr1 = csicr1; |
| 946 | |
| 947 | bytesperline = soc_mbus_bytes_per_line(icd->user_width, |
| 948 | icd->current_fmt->host_fmt); |
| 949 | if (bytesperline < 0) |
| 950 | return bytesperline; |
| 951 | |
Sascha Hauer | 2c9ba37 | 2012-02-20 07:55:24 -0300 | [diff] [blame] | 952 | if (cpu_is_mx27()) { |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 953 | ret = mx27_camera_emma_prp_reset(pcdev); |
| 954 | if (ret) |
| 955 | return ret; |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 956 | } else if (cpu_is_mx25()) { |
| 957 | writel((bytesperline * icd->user_height) >> 2, |
| 958 | pcdev->base_csi + CSIRXCNT); |
| 959 | writel((bytesperline << 16) | icd->user_height, |
| 960 | pcdev->base_csi + CSIIMAG_PARA); |
| 961 | } |
| 962 | |
| 963 | writel(pcdev->csicr1, pcdev->base_csi + CSICR1); |
| 964 | |
| 965 | return 0; |
| 966 | } |
| 967 | |
| 968 | static int mx2_camera_set_crop(struct soc_camera_device *icd, |
| 969 | struct v4l2_crop *a) |
| 970 | { |
| 971 | struct v4l2_rect *rect = &a->c; |
| 972 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
| 973 | struct v4l2_mbus_framefmt mf; |
| 974 | int ret; |
| 975 | |
| 976 | soc_camera_limit_side(&rect->left, &rect->width, 0, 2, 4096); |
| 977 | soc_camera_limit_side(&rect->top, &rect->height, 0, 2, 4096); |
| 978 | |
| 979 | ret = v4l2_subdev_call(sd, video, s_crop, a); |
| 980 | if (ret < 0) |
| 981 | return ret; |
| 982 | |
| 983 | /* The capture device might have changed its output */ |
| 984 | ret = v4l2_subdev_call(sd, video, g_mbus_fmt, &mf); |
| 985 | if (ret < 0) |
| 986 | return ret; |
| 987 | |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 988 | dev_dbg(icd->parent, "Sensor cropped %dx%d\n", |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 989 | mf.width, mf.height); |
| 990 | |
| 991 | icd->user_width = mf.width; |
| 992 | icd->user_height = mf.height; |
| 993 | |
| 994 | return ret; |
| 995 | } |
| 996 | |
Javier Martin | f410991 | 2011-12-14 13:30:14 -0300 | [diff] [blame] | 997 | static int mx2_camera_get_formats(struct soc_camera_device *icd, |
| 998 | unsigned int idx, |
| 999 | struct soc_camera_format_xlate *xlate) |
| 1000 | { |
| 1001 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
| 1002 | const struct soc_mbus_pixelfmt *fmt; |
| 1003 | struct device *dev = icd->parent; |
| 1004 | enum v4l2_mbus_pixelcode code; |
| 1005 | int ret, formats = 0; |
| 1006 | |
| 1007 | ret = v4l2_subdev_call(sd, video, enum_mbus_fmt, idx, &code); |
| 1008 | if (ret < 0) |
| 1009 | /* no more formats */ |
| 1010 | return 0; |
| 1011 | |
| 1012 | fmt = soc_mbus_get_fmtdesc(code); |
| 1013 | if (!fmt) { |
| 1014 | dev_err(dev, "Invalid format code #%u: %d\n", idx, code); |
| 1015 | return 0; |
| 1016 | } |
| 1017 | |
| 1018 | if (code == V4L2_MBUS_FMT_YUYV8_2X8) { |
| 1019 | formats++; |
| 1020 | if (xlate) { |
| 1021 | /* |
| 1022 | * CH2 can output YUV420 which is a standard format in |
| 1023 | * soc_mediabus.c |
| 1024 | */ |
| 1025 | xlate->host_fmt = |
| 1026 | soc_mbus_get_fmtdesc(V4L2_MBUS_FMT_YUYV8_1_5X8); |
| 1027 | xlate->code = code; |
| 1028 | dev_dbg(dev, "Providing host format %s for sensor code %d\n", |
| 1029 | xlate->host_fmt->name, code); |
| 1030 | xlate++; |
| 1031 | } |
| 1032 | } |
| 1033 | |
| 1034 | /* Generic pass-trough */ |
| 1035 | formats++; |
| 1036 | if (xlate) { |
| 1037 | xlate->host_fmt = fmt; |
| 1038 | xlate->code = code; |
| 1039 | xlate++; |
| 1040 | } |
| 1041 | return formats; |
| 1042 | } |
| 1043 | |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 1044 | static int mx2_camera_set_fmt(struct soc_camera_device *icd, |
| 1045 | struct v4l2_format *f) |
| 1046 | { |
Javier Martin | f410991 | 2011-12-14 13:30:14 -0300 | [diff] [blame] | 1047 | struct soc_camera_host *ici = to_soc_camera_host(icd->parent); |
| 1048 | struct mx2_camera_dev *pcdev = ici->priv; |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 1049 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
| 1050 | const struct soc_camera_format_xlate *xlate; |
| 1051 | struct v4l2_pix_format *pix = &f->fmt.pix; |
| 1052 | struct v4l2_mbus_framefmt mf; |
| 1053 | int ret; |
| 1054 | |
| 1055 | xlate = soc_camera_xlate_by_fourcc(icd, pix->pixelformat); |
| 1056 | if (!xlate) { |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 1057 | dev_warn(icd->parent, "Format %x not found\n", |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 1058 | pix->pixelformat); |
| 1059 | return -EINVAL; |
| 1060 | } |
| 1061 | |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 1062 | mf.width = pix->width; |
| 1063 | mf.height = pix->height; |
| 1064 | mf.field = pix->field; |
| 1065 | mf.colorspace = pix->colorspace; |
| 1066 | mf.code = xlate->code; |
| 1067 | |
| 1068 | ret = v4l2_subdev_call(sd, video, s_mbus_fmt, &mf); |
| 1069 | if (ret < 0 && ret != -ENOIOCTLCMD) |
| 1070 | return ret; |
| 1071 | |
| 1072 | if (mf.code != xlate->code) |
| 1073 | return -EINVAL; |
| 1074 | |
| 1075 | pix->width = mf.width; |
| 1076 | pix->height = mf.height; |
| 1077 | pix->field = mf.field; |
| 1078 | pix->colorspace = mf.colorspace; |
| 1079 | icd->current_fmt = xlate; |
| 1080 | |
Sascha Hauer | 2c9ba37 | 2012-02-20 07:55:24 -0300 | [diff] [blame] | 1081 | if (cpu_is_mx27()) |
Javier Martin | f410991 | 2011-12-14 13:30:14 -0300 | [diff] [blame] | 1082 | pcdev->emma_prp = mx27_emma_prp_get_format(xlate->code, |
| 1083 | xlate->host_fmt->fourcc); |
| 1084 | |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 1085 | return 0; |
| 1086 | } |
| 1087 | |
| 1088 | static int mx2_camera_try_fmt(struct soc_camera_device *icd, |
| 1089 | struct v4l2_format *f) |
| 1090 | { |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 1091 | struct v4l2_subdev *sd = soc_camera_to_subdev(icd); |
| 1092 | const struct soc_camera_format_xlate *xlate; |
| 1093 | struct v4l2_pix_format *pix = &f->fmt.pix; |
| 1094 | struct v4l2_mbus_framefmt mf; |
| 1095 | __u32 pixfmt = pix->pixelformat; |
| 1096 | unsigned int width_limit; |
| 1097 | int ret; |
| 1098 | |
| 1099 | xlate = soc_camera_xlate_by_fourcc(icd, pixfmt); |
| 1100 | if (pixfmt && !xlate) { |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 1101 | dev_warn(icd->parent, "Format %x not found\n", pixfmt); |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 1102 | return -EINVAL; |
| 1103 | } |
| 1104 | |
| 1105 | /* FIXME: implement MX27 limits */ |
| 1106 | |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 1107 | /* limit to MX25 hardware capabilities */ |
| 1108 | if (cpu_is_mx25()) { |
| 1109 | if (xlate->host_fmt->bits_per_sample <= 8) |
| 1110 | width_limit = 0xffff * 4; |
| 1111 | else |
| 1112 | width_limit = 0xffff * 2; |
| 1113 | /* CSIIMAG_PARA limit */ |
| 1114 | if (pix->width > width_limit) |
| 1115 | pix->width = width_limit; |
| 1116 | if (pix->height > 0xffff) |
| 1117 | pix->height = 0xffff; |
| 1118 | |
| 1119 | pix->bytesperline = soc_mbus_bytes_per_line(pix->width, |
| 1120 | xlate->host_fmt); |
| 1121 | if (pix->bytesperline < 0) |
| 1122 | return pix->bytesperline; |
| 1123 | pix->sizeimage = pix->height * pix->bytesperline; |
Guennadi Liakhovetski | 28281a7 | 2011-06-04 15:06:47 -0300 | [diff] [blame] | 1124 | /* Check against the CSIRXCNT limit */ |
| 1125 | if (pix->sizeimage > 4 * 0x3ffff) { |
| 1126 | /* Adjust geometry, preserve aspect ratio */ |
| 1127 | unsigned int new_height = int_sqrt(4 * 0x3ffff * |
| 1128 | pix->height / pix->bytesperline); |
| 1129 | pix->width = new_height * pix->width / pix->height; |
| 1130 | pix->height = new_height; |
| 1131 | pix->bytesperline = soc_mbus_bytes_per_line(pix->width, |
| 1132 | xlate->host_fmt); |
| 1133 | BUG_ON(pix->bytesperline < 0); |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 1134 | } |
| 1135 | } |
| 1136 | |
| 1137 | /* limit to sensor capabilities */ |
| 1138 | mf.width = pix->width; |
| 1139 | mf.height = pix->height; |
| 1140 | mf.field = pix->field; |
| 1141 | mf.colorspace = pix->colorspace; |
| 1142 | mf.code = xlate->code; |
| 1143 | |
| 1144 | ret = v4l2_subdev_call(sd, video, try_mbus_fmt, &mf); |
| 1145 | if (ret < 0) |
| 1146 | return ret; |
| 1147 | |
| 1148 | if (mf.field == V4L2_FIELD_ANY) |
| 1149 | mf.field = V4L2_FIELD_NONE; |
Javier Martin | f410991 | 2011-12-14 13:30:14 -0300 | [diff] [blame] | 1150 | /* |
| 1151 | * Driver supports interlaced images provided they have |
| 1152 | * both fields so that they can be processed as if they |
| 1153 | * were progressive. |
| 1154 | */ |
| 1155 | if (mf.field != V4L2_FIELD_NONE && !V4L2_FIELD_HAS_BOTH(mf.field)) { |
Guennadi Liakhovetski | 7dfff95 | 2011-07-15 20:03:38 -0300 | [diff] [blame] | 1156 | dev_err(icd->parent, "Field type %d unsupported.\n", |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 1157 | mf.field); |
| 1158 | return -EINVAL; |
| 1159 | } |
| 1160 | |
| 1161 | pix->width = mf.width; |
| 1162 | pix->height = mf.height; |
| 1163 | pix->field = mf.field; |
| 1164 | pix->colorspace = mf.colorspace; |
| 1165 | |
| 1166 | return 0; |
| 1167 | } |
| 1168 | |
| 1169 | static int mx2_camera_querycap(struct soc_camera_host *ici, |
| 1170 | struct v4l2_capability *cap) |
| 1171 | { |
| 1172 | /* cap->name is set by the friendly caller:-> */ |
| 1173 | strlcpy(cap->card, MX2_CAM_DRIVER_DESCRIPTION, sizeof(cap->card)); |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 1174 | cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING; |
| 1175 | |
| 1176 | return 0; |
| 1177 | } |
| 1178 | |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 1179 | static unsigned int mx2_camera_poll(struct file *file, poll_table *pt) |
| 1180 | { |
Sascha Hauer | 6b10192 | 2010-11-08 17:52:45 -0300 | [diff] [blame] | 1181 | struct soc_camera_device *icd = file->private_data; |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 1182 | |
Javier Martin | c6a41e3 | 2012-01-30 09:14:10 -0300 | [diff] [blame] | 1183 | return vb2_poll(&icd->vb2_vidq, file, pt); |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 1184 | } |
| 1185 | |
| 1186 | static struct soc_camera_host_ops mx2_soc_camera_host_ops = { |
| 1187 | .owner = THIS_MODULE, |
| 1188 | .add = mx2_camera_add_device, |
| 1189 | .remove = mx2_camera_remove_device, |
| 1190 | .set_fmt = mx2_camera_set_fmt, |
| 1191 | .set_crop = mx2_camera_set_crop, |
Javier Martin | f410991 | 2011-12-14 13:30:14 -0300 | [diff] [blame] | 1192 | .get_formats = mx2_camera_get_formats, |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 1193 | .try_fmt = mx2_camera_try_fmt, |
Javier Martin | c6a41e3 | 2012-01-30 09:14:10 -0300 | [diff] [blame] | 1194 | .init_videobuf2 = mx2_camera_init_videobuf, |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 1195 | .poll = mx2_camera_poll, |
| 1196 | .querycap = mx2_camera_querycap, |
| 1197 | .set_bus_param = mx2_camera_set_bus_param, |
| 1198 | }; |
| 1199 | |
| 1200 | static void mx27_camera_frame_done_emma(struct mx2_camera_dev *pcdev, |
Javier Martin | d84279e | 2012-02-22 07:34:36 -0300 | [diff] [blame] | 1201 | int bufnum, bool err) |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 1202 | { |
Javier Martin | f410991 | 2011-12-14 13:30:14 -0300 | [diff] [blame] | 1203 | struct mx2_fmt_cfg *prp = pcdev->emma_prp; |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 1204 | struct mx2_buffer *buf; |
Javier Martin | c6a41e3 | 2012-01-30 09:14:10 -0300 | [diff] [blame] | 1205 | struct vb2_buffer *vb; |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 1206 | unsigned long phys; |
| 1207 | |
Javier Martin | a654ba1 | 2012-02-22 07:59:33 -0300 | [diff] [blame] | 1208 | buf = list_first_entry(&pcdev->active_bufs, struct mx2_buffer, queue); |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 1209 | |
Javier Martin | cdc9d6f | 2012-02-07 07:14:42 -0300 | [diff] [blame] | 1210 | BUG_ON(buf->bufnum != bufnum); |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 1211 | |
Javier Martin | cdc9d6f | 2012-02-07 07:14:42 -0300 | [diff] [blame] | 1212 | if (buf->discard) { |
| 1213 | /* |
| 1214 | * Discard buffer must not be returned to user space. |
| 1215 | * Just return it to the discard queue. |
| 1216 | */ |
| 1217 | list_move_tail(pcdev->active_bufs.next, &pcdev->discard); |
| 1218 | } else { |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 1219 | vb = &buf->vb; |
| 1220 | #ifdef DEBUG |
Javier Martin | c6a41e3 | 2012-01-30 09:14:10 -0300 | [diff] [blame] | 1221 | phys = vb2_dma_contig_plane_dma_addr(vb, 0); |
Javier Martin | f410991 | 2011-12-14 13:30:14 -0300 | [diff] [blame] | 1222 | if (prp->cfg.channel == 1) { |
| 1223 | if (readl(pcdev->base_emma + PRP_DEST_RGB1_PTR + |
| 1224 | 4 * bufnum) != phys) { |
| 1225 | dev_err(pcdev->dev, "%p != %p\n", phys, |
| 1226 | readl(pcdev->base_emma + |
| 1227 | PRP_DEST_RGB1_PTR + |
| 1228 | 4 * bufnum)); |
| 1229 | } |
| 1230 | } else { |
| 1231 | if (readl(pcdev->base_emma + PRP_DEST_Y_PTR - |
| 1232 | 0x14 * bufnum) != phys) { |
| 1233 | dev_err(pcdev->dev, "%p != %p\n", phys, |
| 1234 | readl(pcdev->base_emma + |
| 1235 | PRP_DEST_Y_PTR - |
| 1236 | 0x14 * bufnum)); |
| 1237 | } |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 1238 | } |
| 1239 | #endif |
Javier Martin | c6a41e3 | 2012-01-30 09:14:10 -0300 | [diff] [blame] | 1240 | dev_dbg(pcdev->dev, "%s (vb=0x%p) 0x%p %lu\n", __func__, vb, |
| 1241 | vb2_plane_vaddr(vb, 0), |
| 1242 | vb2_get_plane_payload(vb, 0)); |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 1243 | |
Javier Martin | c6a41e3 | 2012-01-30 09:14:10 -0300 | [diff] [blame] | 1244 | list_del_init(&buf->queue); |
| 1245 | do_gettimeofday(&vb->v4l2_buf.timestamp); |
Javier Martin | c6a41e3 | 2012-01-30 09:14:10 -0300 | [diff] [blame] | 1246 | vb->v4l2_buf.sequence = pcdev->frame_count; |
Javier Martin | d84279e | 2012-02-22 07:34:36 -0300 | [diff] [blame] | 1247 | if (err) |
| 1248 | vb2_buffer_done(vb, VB2_BUF_STATE_ERROR); |
| 1249 | else |
| 1250 | vb2_buffer_done(vb, VB2_BUF_STATE_DONE); |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 1251 | } |
| 1252 | |
Javier Martin | fb51cbd | 2012-01-30 09:14:11 -0300 | [diff] [blame] | 1253 | pcdev->frame_count++; |
| 1254 | |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 1255 | if (list_empty(&pcdev->capture)) { |
Javier Martin | cdc9d6f | 2012-02-07 07:14:42 -0300 | [diff] [blame] | 1256 | if (list_empty(&pcdev->discard)) { |
| 1257 | dev_warn(pcdev->dev, "%s: trying to access empty discard list\n", |
| 1258 | __func__); |
| 1259 | return; |
Javier Martin | f410991 | 2011-12-14 13:30:14 -0300 | [diff] [blame] | 1260 | } |
Javier Martin | cdc9d6f | 2012-02-07 07:14:42 -0300 | [diff] [blame] | 1261 | |
Javier Martin | a654ba1 | 2012-02-22 07:59:33 -0300 | [diff] [blame] | 1262 | buf = list_first_entry(&pcdev->discard, struct mx2_buffer, |
| 1263 | queue); |
Javier Martin | cdc9d6f | 2012-02-07 07:14:42 -0300 | [diff] [blame] | 1264 | buf->bufnum = bufnum; |
| 1265 | |
| 1266 | list_move_tail(pcdev->discard.next, &pcdev->active_bufs); |
| 1267 | mx27_update_emma_buf(pcdev, pcdev->discard_buffer_dma, bufnum); |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 1268 | return; |
| 1269 | } |
| 1270 | |
Javier Martin | a654ba1 | 2012-02-22 07:59:33 -0300 | [diff] [blame] | 1271 | buf = list_first_entry(&pcdev->capture, struct mx2_buffer, queue); |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 1272 | |
Javier Martin | cdc9d6f | 2012-02-07 07:14:42 -0300 | [diff] [blame] | 1273 | buf->bufnum = bufnum; |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 1274 | |
| 1275 | list_move_tail(pcdev->capture.next, &pcdev->active_bufs); |
| 1276 | |
| 1277 | vb = &buf->vb; |
Javier Martin | c6a41e3 | 2012-01-30 09:14:10 -0300 | [diff] [blame] | 1278 | buf->state = MX2_STATE_ACTIVE; |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 1279 | |
Javier Martin | c6a41e3 | 2012-01-30 09:14:10 -0300 | [diff] [blame] | 1280 | phys = vb2_dma_contig_plane_dma_addr(vb, 0); |
Javier Martin | cdc9d6f | 2012-02-07 07:14:42 -0300 | [diff] [blame] | 1281 | mx27_update_emma_buf(pcdev, phys, bufnum); |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 1282 | } |
| 1283 | |
| 1284 | static irqreturn_t mx27_camera_emma_irq(int irq_emma, void *data) |
| 1285 | { |
| 1286 | struct mx2_camera_dev *pcdev = data; |
| 1287 | unsigned int status = readl(pcdev->base_emma + PRP_INTRSTATUS); |
| 1288 | struct mx2_buffer *buf; |
Javier Martin | cdc9d6f | 2012-02-07 07:14:42 -0300 | [diff] [blame] | 1289 | |
Javier Martin | 8636ead | 2012-02-13 10:51:52 -0300 | [diff] [blame^] | 1290 | spin_lock(&pcdev->lock); |
Javier Martin | cdc9d6f | 2012-02-07 07:14:42 -0300 | [diff] [blame] | 1291 | |
| 1292 | if (list_empty(&pcdev->active_bufs)) { |
| 1293 | dev_warn(pcdev->dev, "%s: called while active list is empty\n", |
| 1294 | __func__); |
| 1295 | goto irq_ok; |
| 1296 | } |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 1297 | |
| 1298 | if (status & (1 << 7)) { /* overflow */ |
Javier Martin | d84279e | 2012-02-22 07:34:36 -0300 | [diff] [blame] | 1299 | u32 cntl = readl(pcdev->base_emma + PRP_CNTL); |
Javier Martin | f410991 | 2011-12-14 13:30:14 -0300 | [diff] [blame] | 1300 | writel(cntl & ~(PRP_CNTL_CH1EN | PRP_CNTL_CH2EN), |
| 1301 | pcdev->base_emma + PRP_CNTL); |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 1302 | writel(cntl, pcdev->base_emma + PRP_CNTL); |
Javier Martin | d84279e | 2012-02-22 07:34:36 -0300 | [diff] [blame] | 1303 | |
Javier Martin | a654ba1 | 2012-02-22 07:59:33 -0300 | [diff] [blame] | 1304 | buf = list_first_entry(&pcdev->active_bufs, |
Javier Martin | d84279e | 2012-02-22 07:34:36 -0300 | [diff] [blame] | 1305 | struct mx2_buffer, queue); |
| 1306 | mx27_camera_frame_done_emma(pcdev, |
| 1307 | buf->bufnum, true); |
| 1308 | |
| 1309 | status &= ~(1 << 7); |
| 1310 | } else if (((status & (3 << 5)) == (3 << 5)) || |
Javier Martin | cdc9d6f | 2012-02-07 07:14:42 -0300 | [diff] [blame] | 1311 | ((status & (3 << 3)) == (3 << 3))) { |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 1312 | /* |
| 1313 | * Both buffers have triggered, process the one we're expecting |
| 1314 | * to first |
| 1315 | */ |
Javier Martin | a654ba1 | 2012-02-22 07:59:33 -0300 | [diff] [blame] | 1316 | buf = list_first_entry(&pcdev->active_bufs, struct mx2_buffer, |
| 1317 | queue); |
Javier Martin | d84279e | 2012-02-22 07:34:36 -0300 | [diff] [blame] | 1318 | mx27_camera_frame_done_emma(pcdev, buf->bufnum, false); |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 1319 | status &= ~(1 << (6 - buf->bufnum)); /* mark processed */ |
Javier Martin | d84279e | 2012-02-22 07:34:36 -0300 | [diff] [blame] | 1320 | } else if ((status & (1 << 6)) || (status & (1 << 4))) { |
| 1321 | mx27_camera_frame_done_emma(pcdev, 0, false); |
| 1322 | } else if ((status & (1 << 5)) || (status & (1 << 3))) { |
| 1323 | mx27_camera_frame_done_emma(pcdev, 1, false); |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 1324 | } |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 1325 | |
Javier Martin | cdc9d6f | 2012-02-07 07:14:42 -0300 | [diff] [blame] | 1326 | irq_ok: |
Javier Martin | 8636ead | 2012-02-13 10:51:52 -0300 | [diff] [blame^] | 1327 | spin_unlock(&pcdev->lock); |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 1328 | writel(status, pcdev->base_emma + PRP_INTRSTATUS); |
| 1329 | |
| 1330 | return IRQ_HANDLED; |
| 1331 | } |
| 1332 | |
| 1333 | static int __devinit mx27_camera_emma_init(struct mx2_camera_dev *pcdev) |
| 1334 | { |
| 1335 | struct resource *res_emma = pcdev->res_emma; |
| 1336 | int err = 0; |
| 1337 | |
| 1338 | if (!request_mem_region(res_emma->start, resource_size(res_emma), |
| 1339 | MX2_CAM_DRV_NAME)) { |
| 1340 | err = -EBUSY; |
| 1341 | goto out; |
| 1342 | } |
| 1343 | |
| 1344 | pcdev->base_emma = ioremap(res_emma->start, resource_size(res_emma)); |
| 1345 | if (!pcdev->base_emma) { |
| 1346 | err = -ENOMEM; |
| 1347 | goto exit_release; |
| 1348 | } |
| 1349 | |
| 1350 | err = request_irq(pcdev->irq_emma, mx27_camera_emma_irq, 0, |
| 1351 | MX2_CAM_DRV_NAME, pcdev); |
| 1352 | if (err) { |
| 1353 | dev_err(pcdev->dev, "Camera EMMA interrupt register failed \n"); |
| 1354 | goto exit_iounmap; |
| 1355 | } |
| 1356 | |
| 1357 | pcdev->clk_emma = clk_get(NULL, "emma"); |
| 1358 | if (IS_ERR(pcdev->clk_emma)) { |
| 1359 | err = PTR_ERR(pcdev->clk_emma); |
| 1360 | goto exit_free_irq; |
| 1361 | } |
| 1362 | |
| 1363 | clk_enable(pcdev->clk_emma); |
| 1364 | |
| 1365 | err = mx27_camera_emma_prp_reset(pcdev); |
| 1366 | if (err) |
| 1367 | goto exit_clk_emma_put; |
| 1368 | |
| 1369 | return err; |
| 1370 | |
| 1371 | exit_clk_emma_put: |
| 1372 | clk_disable(pcdev->clk_emma); |
| 1373 | clk_put(pcdev->clk_emma); |
| 1374 | exit_free_irq: |
| 1375 | free_irq(pcdev->irq_emma, pcdev); |
| 1376 | exit_iounmap: |
| 1377 | iounmap(pcdev->base_emma); |
| 1378 | exit_release: |
| 1379 | release_mem_region(res_emma->start, resource_size(res_emma)); |
| 1380 | out: |
| 1381 | return err; |
| 1382 | } |
| 1383 | |
| 1384 | static int __devinit mx2_camera_probe(struct platform_device *pdev) |
| 1385 | { |
| 1386 | struct mx2_camera_dev *pcdev; |
| 1387 | struct resource *res_csi, *res_emma; |
| 1388 | void __iomem *base_csi; |
| 1389 | int irq_csi, irq_emma; |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 1390 | int err = 0; |
| 1391 | |
| 1392 | dev_dbg(&pdev->dev, "initialising\n"); |
| 1393 | |
| 1394 | res_csi = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| 1395 | irq_csi = platform_get_irq(pdev, 0); |
| 1396 | if (res_csi == NULL || irq_csi < 0) { |
| 1397 | dev_err(&pdev->dev, "Missing platform resources data\n"); |
| 1398 | err = -ENODEV; |
| 1399 | goto exit; |
| 1400 | } |
| 1401 | |
| 1402 | pcdev = kzalloc(sizeof(*pcdev), GFP_KERNEL); |
| 1403 | if (!pcdev) { |
| 1404 | dev_err(&pdev->dev, "Could not allocate pcdev\n"); |
| 1405 | err = -ENOMEM; |
| 1406 | goto exit; |
| 1407 | } |
| 1408 | |
| 1409 | pcdev->clk_csi = clk_get(&pdev->dev, NULL); |
| 1410 | if (IS_ERR(pcdev->clk_csi)) { |
| 1411 | err = PTR_ERR(pcdev->clk_csi); |
| 1412 | goto exit_kfree; |
| 1413 | } |
| 1414 | |
| 1415 | dev_dbg(&pdev->dev, "Camera clock frequency: %ld\n", |
| 1416 | clk_get_rate(pcdev->clk_csi)); |
| 1417 | |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 1418 | pcdev->res_csi = res_csi; |
| 1419 | pcdev->pdata = pdev->dev.platform_data; |
| 1420 | if (pcdev->pdata) { |
| 1421 | long rate; |
| 1422 | |
| 1423 | pcdev->platform_flags = pcdev->pdata->flags; |
| 1424 | |
| 1425 | rate = clk_round_rate(pcdev->clk_csi, pcdev->pdata->clk * 2); |
| 1426 | if (rate <= 0) { |
| 1427 | err = -ENODEV; |
| 1428 | goto exit_dma_free; |
| 1429 | } |
| 1430 | err = clk_set_rate(pcdev->clk_csi, rate); |
| 1431 | if (err < 0) |
| 1432 | goto exit_dma_free; |
| 1433 | } |
| 1434 | |
| 1435 | INIT_LIST_HEAD(&pcdev->capture); |
| 1436 | INIT_LIST_HEAD(&pcdev->active_bufs); |
Javier Martin | cdc9d6f | 2012-02-07 07:14:42 -0300 | [diff] [blame] | 1437 | INIT_LIST_HEAD(&pcdev->discard); |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 1438 | spin_lock_init(&pcdev->lock); |
| 1439 | |
| 1440 | /* |
| 1441 | * Request the regions. |
| 1442 | */ |
| 1443 | if (!request_mem_region(res_csi->start, resource_size(res_csi), |
| 1444 | MX2_CAM_DRV_NAME)) { |
| 1445 | err = -EBUSY; |
| 1446 | goto exit_dma_free; |
| 1447 | } |
| 1448 | |
| 1449 | base_csi = ioremap(res_csi->start, resource_size(res_csi)); |
| 1450 | if (!base_csi) { |
| 1451 | err = -ENOMEM; |
| 1452 | goto exit_release; |
| 1453 | } |
| 1454 | pcdev->irq_csi = irq_csi; |
| 1455 | pcdev->base_csi = base_csi; |
| 1456 | pcdev->base_dma = res_csi->start; |
| 1457 | pcdev->dev = &pdev->dev; |
| 1458 | |
Sascha Hauer | 2c9ba37 | 2012-02-20 07:55:24 -0300 | [diff] [blame] | 1459 | if (cpu_is_mx25()) { |
| 1460 | err = request_irq(pcdev->irq_csi, mx25_camera_irq, 0, |
| 1461 | MX2_CAM_DRV_NAME, pcdev); |
| 1462 | if (err) { |
| 1463 | dev_err(pcdev->dev, "Camera interrupt register failed \n"); |
| 1464 | goto exit_iounmap; |
| 1465 | } |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 1466 | } |
| 1467 | |
| 1468 | if (cpu_is_mx27()) { |
| 1469 | /* EMMA support */ |
| 1470 | res_emma = platform_get_resource(pdev, IORESOURCE_MEM, 1); |
| 1471 | irq_emma = platform_get_irq(pdev, 1); |
| 1472 | |
Sascha Hauer | 2c9ba37 | 2012-02-20 07:55:24 -0300 | [diff] [blame] | 1473 | if (!res_emma || !irq_emma) { |
| 1474 | dev_err(&pdev->dev, "no EMMA resources\n"); |
| 1475 | goto exit_free_irq; |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 1476 | } |
Sascha Hauer | 2c9ba37 | 2012-02-20 07:55:24 -0300 | [diff] [blame] | 1477 | |
| 1478 | pcdev->res_emma = res_emma; |
| 1479 | pcdev->irq_emma = irq_emma; |
| 1480 | if (mx27_camera_emma_init(pcdev)) |
| 1481 | goto exit_free_irq; |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 1482 | } |
| 1483 | |
| 1484 | pcdev->soc_host.drv_name = MX2_CAM_DRV_NAME, |
| 1485 | pcdev->soc_host.ops = &mx2_soc_camera_host_ops, |
| 1486 | pcdev->soc_host.priv = pcdev; |
| 1487 | pcdev->soc_host.v4l2_dev.dev = &pdev->dev; |
| 1488 | pcdev->soc_host.nr = pdev->id; |
Javier Martin | c6a41e3 | 2012-01-30 09:14:10 -0300 | [diff] [blame] | 1489 | |
| 1490 | pcdev->alloc_ctx = vb2_dma_contig_init_ctx(&pdev->dev); |
| 1491 | if (IS_ERR(pcdev->alloc_ctx)) { |
| 1492 | err = PTR_ERR(pcdev->alloc_ctx); |
| 1493 | goto eallocctx; |
| 1494 | } |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 1495 | err = soc_camera_host_register(&pcdev->soc_host); |
| 1496 | if (err) |
| 1497 | goto exit_free_emma; |
| 1498 | |
Michael Grzeschik | 45f4d4e | 2010-08-27 09:39:05 -0300 | [diff] [blame] | 1499 | dev_info(&pdev->dev, "MX2 Camera (CSI) driver probed, clock frequency: %ld\n", |
| 1500 | clk_get_rate(pcdev->clk_csi)); |
| 1501 | |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 1502 | return 0; |
| 1503 | |
| 1504 | exit_free_emma: |
Javier Martin | c6a41e3 | 2012-01-30 09:14:10 -0300 | [diff] [blame] | 1505 | vb2_dma_contig_cleanup_ctx(pcdev->alloc_ctx); |
| 1506 | eallocctx: |
Sascha Hauer | 2c9ba37 | 2012-02-20 07:55:24 -0300 | [diff] [blame] | 1507 | if (cpu_is_mx27()) { |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 1508 | free_irq(pcdev->irq_emma, pcdev); |
| 1509 | clk_disable(pcdev->clk_emma); |
| 1510 | clk_put(pcdev->clk_emma); |
| 1511 | iounmap(pcdev->base_emma); |
Sascha Hauer | 2c9ba37 | 2012-02-20 07:55:24 -0300 | [diff] [blame] | 1512 | release_mem_region(pcdev->res_emma->start, resource_size(pcdev->res_emma)); |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 1513 | } |
| 1514 | exit_free_irq: |
Sascha Hauer | 2c9ba37 | 2012-02-20 07:55:24 -0300 | [diff] [blame] | 1515 | if (cpu_is_mx25()) |
| 1516 | free_irq(pcdev->irq_csi, pcdev); |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 1517 | exit_iounmap: |
| 1518 | iounmap(base_csi); |
| 1519 | exit_release: |
| 1520 | release_mem_region(res_csi->start, resource_size(res_csi)); |
| 1521 | exit_dma_free: |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 1522 | clk_put(pcdev->clk_csi); |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 1523 | exit_kfree: |
| 1524 | kfree(pcdev); |
| 1525 | exit: |
| 1526 | return err; |
| 1527 | } |
| 1528 | |
| 1529 | static int __devexit mx2_camera_remove(struct platform_device *pdev) |
| 1530 | { |
| 1531 | struct soc_camera_host *soc_host = to_soc_camera_host(&pdev->dev); |
| 1532 | struct mx2_camera_dev *pcdev = container_of(soc_host, |
| 1533 | struct mx2_camera_dev, soc_host); |
| 1534 | struct resource *res; |
| 1535 | |
| 1536 | clk_put(pcdev->clk_csi); |
Sascha Hauer | 2c9ba37 | 2012-02-20 07:55:24 -0300 | [diff] [blame] | 1537 | if (cpu_is_mx25()) |
| 1538 | free_irq(pcdev->irq_csi, pcdev); |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 1539 | if (cpu_is_mx27()) |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 1540 | free_irq(pcdev->irq_emma, pcdev); |
| 1541 | |
| 1542 | soc_camera_host_unregister(&pcdev->soc_host); |
| 1543 | |
Javier Martin | c6a41e3 | 2012-01-30 09:14:10 -0300 | [diff] [blame] | 1544 | vb2_dma_contig_cleanup_ctx(pcdev->alloc_ctx); |
| 1545 | |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 1546 | iounmap(pcdev->base_csi); |
| 1547 | |
Sascha Hauer | 2c9ba37 | 2012-02-20 07:55:24 -0300 | [diff] [blame] | 1548 | if (cpu_is_mx27()) { |
Baruch Siach | 2066930 | 2010-07-04 07:55:10 +0300 | [diff] [blame] | 1549 | clk_disable(pcdev->clk_emma); |
| 1550 | clk_put(pcdev->clk_emma); |
| 1551 | iounmap(pcdev->base_emma); |
| 1552 | res = pcdev->res_emma; |
| 1553 | release_mem_region(res->start, resource_size(res)); |
| 1554 | } |
| 1555 | |
| 1556 | res = pcdev->res_csi; |
| 1557 | release_mem_region(res->start, resource_size(res)); |
| 1558 | |
| 1559 | kfree(pcdev); |
| 1560 | |
| 1561 | dev_info(&pdev->dev, "MX2 Camera driver unloaded\n"); |
| 1562 | |
| 1563 | return 0; |
| 1564 | } |
| 1565 | |
| 1566 | static struct platform_driver mx2_camera_driver = { |
| 1567 | .driver = { |
| 1568 | .name = MX2_CAM_DRV_NAME, |
| 1569 | }, |
| 1570 | .remove = __devexit_p(mx2_camera_remove), |
| 1571 | }; |
| 1572 | |
| 1573 | |
| 1574 | static int __init mx2_camera_init(void) |
| 1575 | { |
| 1576 | return platform_driver_probe(&mx2_camera_driver, &mx2_camera_probe); |
| 1577 | } |
| 1578 | |
| 1579 | static void __exit mx2_camera_exit(void) |
| 1580 | { |
| 1581 | return platform_driver_unregister(&mx2_camera_driver); |
| 1582 | } |
| 1583 | |
| 1584 | module_init(mx2_camera_init); |
| 1585 | module_exit(mx2_camera_exit); |
| 1586 | |
| 1587 | MODULE_DESCRIPTION("i.MX27/i.MX25 SoC Camera Host driver"); |
| 1588 | MODULE_AUTHOR("Sascha Hauer <sha@pengutronix.de>"); |
| 1589 | MODULE_LICENSE("GPL"); |
Mauro Carvalho Chehab | 64dc3c1 | 2011-06-25 11:28:37 -0300 | [diff] [blame] | 1590 | MODULE_VERSION(MX2_CAM_VERSION); |