Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 1 | /* |
| 2 | * V4L2 Driver for PXA camera host |
| 3 | * |
| 4 | * Copyright (C) 2006, Sascha Hauer, Pengutronix |
| 5 | * Copyright (C) 2008, Guennadi Liakhovetski <kernel@pengutronix.de> |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU General Public License as published by |
| 9 | * the Free Software Foundation; either version 2 of the License, or |
| 10 | * (at your option) any later version. |
| 11 | */ |
| 12 | |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 13 | #include <linux/init.h> |
| 14 | #include <linux/module.h> |
Guennadi Liakhovetski | 7102b77 | 2008-04-15 02:57:48 -0300 | [diff] [blame] | 15 | #include <linux/io.h> |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 16 | #include <linux/delay.h> |
| 17 | #include <linux/dma-mapping.h> |
| 18 | #include <linux/errno.h> |
| 19 | #include <linux/fs.h> |
| 20 | #include <linux/interrupt.h> |
| 21 | #include <linux/kernel.h> |
| 22 | #include <linux/mm.h> |
| 23 | #include <linux/moduleparam.h> |
| 24 | #include <linux/time.h> |
| 25 | #include <linux/version.h> |
| 26 | #include <linux/device.h> |
| 27 | #include <linux/platform_device.h> |
| 28 | #include <linux/mutex.h> |
| 29 | #include <linux/clk.h> |
| 30 | |
| 31 | #include <media/v4l2-common.h> |
| 32 | #include <media/v4l2-dev.h> |
Paulius Zaleckas | 092d392 | 2008-07-11 20:50:31 -0300 | [diff] [blame] | 33 | #include <media/videobuf-dma-sg.h> |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 34 | #include <media/soc_camera.h> |
| 35 | |
| 36 | #include <linux/videodev2.h> |
| 37 | |
| 38 | #include <asm/dma.h> |
Russell King | a09e64f | 2008-08-05 16:14:15 +0100 | [diff] [blame] | 39 | #include <mach/pxa-regs.h> |
| 40 | #include <mach/camera.h> |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 41 | |
| 42 | #define PXA_CAM_VERSION_CODE KERNEL_VERSION(0, 0, 5) |
| 43 | #define PXA_CAM_DRV_NAME "pxa27x-camera" |
| 44 | |
Guennadi Liakhovetski | 7102b77 | 2008-04-15 02:57:48 -0300 | [diff] [blame] | 45 | #define CICR0_SIM_MP (0 << 24) |
| 46 | #define CICR0_SIM_SP (1 << 24) |
| 47 | #define CICR0_SIM_MS (2 << 24) |
| 48 | #define CICR0_SIM_EP (3 << 24) |
| 49 | #define CICR0_SIM_ES (4 << 24) |
| 50 | |
| 51 | #define CICR1_DW_VAL(x) ((x) & CICR1_DW) /* Data bus width */ |
| 52 | #define CICR1_PPL_VAL(x) (((x) << 15) & CICR1_PPL) /* Pixels per line */ |
Mike Rapoport | a5462e5 | 2008-04-22 10:36:32 -0300 | [diff] [blame] | 53 | #define CICR1_COLOR_SP_VAL(x) (((x) << 3) & CICR1_COLOR_SP) /* color space */ |
| 54 | #define CICR1_RGB_BPP_VAL(x) (((x) << 7) & CICR1_RGB_BPP) /* bpp for rgb */ |
| 55 | #define CICR1_RGBT_CONV_VAL(x) (((x) << 29) & CICR1_RGBT_CONV) /* rgbt conv */ |
Guennadi Liakhovetski | 7102b77 | 2008-04-15 02:57:48 -0300 | [diff] [blame] | 56 | |
| 57 | #define CICR2_BLW_VAL(x) (((x) << 24) & CICR2_BLW) /* Beginning-of-line pixel clock wait count */ |
| 58 | #define CICR2_ELW_VAL(x) (((x) << 16) & CICR2_ELW) /* End-of-line pixel clock wait count */ |
| 59 | #define CICR2_HSW_VAL(x) (((x) << 10) & CICR2_HSW) /* Horizontal sync pulse width */ |
| 60 | #define CICR2_BFPW_VAL(x) (((x) << 3) & CICR2_BFPW) /* Beginning-of-frame pixel clock wait count */ |
| 61 | #define CICR2_FSW_VAL(x) (((x) << 0) & CICR2_FSW) /* Frame stabilization wait count */ |
| 62 | |
| 63 | #define CICR3_BFW_VAL(x) (((x) << 24) & CICR3_BFW) /* Beginning-of-frame line clock wait count */ |
| 64 | #define CICR3_EFW_VAL(x) (((x) << 16) & CICR3_EFW) /* End-of-frame line clock wait count */ |
| 65 | #define CICR3_VSW_VAL(x) (((x) << 11) & CICR3_VSW) /* Vertical sync pulse width */ |
| 66 | #define CICR3_LPF_VAL(x) (((x) << 0) & CICR3_LPF) /* Lines per frame */ |
| 67 | |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 68 | #define CICR0_IRQ_MASK (CICR0_TOM | CICR0_RDAVM | CICR0_FEM | CICR0_EOLM | \ |
| 69 | CICR0_PERRM | CICR0_QDM | CICR0_CDM | CICR0_SOFM | \ |
| 70 | CICR0_EOFM | CICR0_FOM) |
| 71 | |
| 72 | static DEFINE_MUTEX(camera_lock); |
| 73 | |
| 74 | /* |
| 75 | * Structures |
| 76 | */ |
Mike Rapoport | a5462e5 | 2008-04-22 10:36:32 -0300 | [diff] [blame] | 77 | enum pxa_camera_active_dma { |
| 78 | DMA_Y = 0x1, |
| 79 | DMA_U = 0x2, |
| 80 | DMA_V = 0x4, |
| 81 | }; |
| 82 | |
| 83 | /* descriptor needed for the PXA DMA engine */ |
| 84 | struct pxa_cam_dma { |
| 85 | dma_addr_t sg_dma; |
| 86 | struct pxa_dma_desc *sg_cpu; |
| 87 | size_t sg_size; |
| 88 | int sglen; |
| 89 | }; |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 90 | |
| 91 | /* buffer for one video frame */ |
| 92 | struct pxa_buffer { |
| 93 | /* common v4l buffer stuff -- must be first */ |
| 94 | struct videobuf_buffer vb; |
| 95 | |
| 96 | const struct soc_camera_data_format *fmt; |
| 97 | |
Mike Rapoport | a5462e5 | 2008-04-22 10:36:32 -0300 | [diff] [blame] | 98 | /* our descriptor lists for Y, U and V channels */ |
| 99 | struct pxa_cam_dma dmas[3]; |
| 100 | |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 101 | int inwork; |
Mike Rapoport | a5462e5 | 2008-04-22 10:36:32 -0300 | [diff] [blame] | 102 | |
| 103 | enum pxa_camera_active_dma active_dma; |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 104 | }; |
| 105 | |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 106 | struct pxa_camera_dev { |
| 107 | struct device *dev; |
| 108 | /* PXA27x is only supposed to handle one camera on its Quick Capture |
| 109 | * interface. If anyone ever builds hardware to enable more than |
| 110 | * one camera, they will have to modify this driver too */ |
| 111 | struct soc_camera_device *icd; |
| 112 | struct clk *clk; |
| 113 | |
| 114 | unsigned int irq; |
| 115 | void __iomem *base; |
Mike Rapoport | a5462e5 | 2008-04-22 10:36:32 -0300 | [diff] [blame] | 116 | |
Guennadi Liakhovetski | e7c5068 | 2008-04-22 10:37:49 -0300 | [diff] [blame] | 117 | int channels; |
Mike Rapoport | a5462e5 | 2008-04-22 10:36:32 -0300 | [diff] [blame] | 118 | unsigned int dma_chans[3]; |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 119 | |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 120 | struct pxacamera_platform_data *pdata; |
| 121 | struct resource *res; |
| 122 | unsigned long platform_flags; |
| 123 | unsigned long platform_mclk_10khz; |
| 124 | |
| 125 | struct list_head capture; |
| 126 | |
| 127 | spinlock_t lock; |
| 128 | |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 129 | struct pxa_buffer *active; |
Guennadi Liakhovetski | 5aa2110 | 2008-04-22 10:40:23 -0300 | [diff] [blame] | 130 | struct pxa_dma_desc *sg_tail[3]; |
Robert Jarzmik | 3f6ac49 | 2008-08-02 07:10:04 -0300 | [diff] [blame] | 131 | |
| 132 | u32 save_cicr[5]; |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 133 | }; |
| 134 | |
| 135 | static const char *pxa_cam_driver_description = "PXA_Camera"; |
| 136 | |
| 137 | static unsigned int vid_limit = 16; /* Video memory limit, in Mb */ |
| 138 | |
| 139 | /* |
| 140 | * Videobuf operations |
| 141 | */ |
Guennadi Liakhovetski | 7102b77 | 2008-04-15 02:57:48 -0300 | [diff] [blame] | 142 | static int pxa_videobuf_setup(struct videobuf_queue *vq, unsigned int *count, |
| 143 | unsigned int *size) |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 144 | { |
| 145 | struct soc_camera_device *icd = vq->priv_data; |
Guennadi Liakhovetski | 5aa2110 | 2008-04-22 10:40:23 -0300 | [diff] [blame] | 146 | struct soc_camera_host *ici = |
| 147 | to_soc_camera_host(icd->dev.parent); |
| 148 | struct pxa_camera_dev *pcdev = ici->priv; |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 149 | |
| 150 | dev_dbg(&icd->dev, "count=%d, size=%d\n", *count, *size); |
| 151 | |
Mike Rapoport | a5462e5 | 2008-04-22 10:36:32 -0300 | [diff] [blame] | 152 | /* planar capture requires Y, U and V buffers to be page aligned */ |
Guennadi Liakhovetski | 5aa2110 | 2008-04-22 10:40:23 -0300 | [diff] [blame] | 153 | if (pcdev->channels == 3) { |
Mike Rapoport | a5462e5 | 2008-04-22 10:36:32 -0300 | [diff] [blame] | 154 | *size = PAGE_ALIGN(icd->width * icd->height); /* Y pages */ |
| 155 | *size += PAGE_ALIGN(icd->width * icd->height / 2); /* U pages */ |
| 156 | *size += PAGE_ALIGN(icd->width * icd->height / 2); /* V pages */ |
| 157 | } else { |
| 158 | *size = icd->width * icd->height * |
| 159 | ((icd->current_fmt->depth + 7) >> 3); |
| 160 | } |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 161 | |
| 162 | if (0 == *count) |
| 163 | *count = 32; |
| 164 | while (*size * *count > vid_limit * 1024 * 1024) |
| 165 | (*count)--; |
| 166 | |
| 167 | return 0; |
| 168 | } |
| 169 | |
| 170 | static void free_buffer(struct videobuf_queue *vq, struct pxa_buffer *buf) |
| 171 | { |
| 172 | struct soc_camera_device *icd = vq->priv_data; |
| 173 | struct soc_camera_host *ici = |
| 174 | to_soc_camera_host(icd->dev.parent); |
| 175 | struct pxa_camera_dev *pcdev = ici->priv; |
| 176 | struct videobuf_dmabuf *dma = videobuf_to_dma(&buf->vb); |
Mike Rapoport | a5462e5 | 2008-04-22 10:36:32 -0300 | [diff] [blame] | 177 | int i; |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 178 | |
| 179 | BUG_ON(in_interrupt()); |
| 180 | |
Harvey Harrison | 7e28adb | 2008-04-08 23:20:00 -0300 | [diff] [blame] | 181 | dev_dbg(&icd->dev, "%s (vb=0x%p) 0x%08lx %d\n", __func__, |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 182 | &buf->vb, buf->vb.baddr, buf->vb.bsize); |
| 183 | |
| 184 | /* This waits until this buffer is out of danger, i.e., until it is no |
| 185 | * longer in STATE_QUEUED or STATE_ACTIVE */ |
| 186 | videobuf_waiton(&buf->vb, 0, 0); |
| 187 | videobuf_dma_unmap(vq, dma); |
| 188 | videobuf_dma_free(dma); |
| 189 | |
Mike Rapoport | a5462e5 | 2008-04-22 10:36:32 -0300 | [diff] [blame] | 190 | for (i = 0; i < ARRAY_SIZE(buf->dmas); i++) { |
| 191 | if (buf->dmas[i].sg_cpu) |
| 192 | dma_free_coherent(pcdev->dev, buf->dmas[i].sg_size, |
| 193 | buf->dmas[i].sg_cpu, |
| 194 | buf->dmas[i].sg_dma); |
| 195 | buf->dmas[i].sg_cpu = NULL; |
| 196 | } |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 197 | |
| 198 | buf->vb.state = VIDEOBUF_NEEDS_INIT; |
| 199 | } |
| 200 | |
Mike Rapoport | a5462e5 | 2008-04-22 10:36:32 -0300 | [diff] [blame] | 201 | static int pxa_init_dma_channel(struct pxa_camera_dev *pcdev, |
| 202 | struct pxa_buffer *buf, |
| 203 | struct videobuf_dmabuf *dma, int channel, |
| 204 | int sglen, int sg_start, int cibr, |
| 205 | unsigned int size) |
| 206 | { |
| 207 | struct pxa_cam_dma *pxa_dma = &buf->dmas[channel]; |
| 208 | int i; |
| 209 | |
| 210 | if (pxa_dma->sg_cpu) |
| 211 | dma_free_coherent(pcdev->dev, pxa_dma->sg_size, |
| 212 | pxa_dma->sg_cpu, pxa_dma->sg_dma); |
| 213 | |
| 214 | pxa_dma->sg_size = (sglen + 1) * sizeof(struct pxa_dma_desc); |
| 215 | pxa_dma->sg_cpu = dma_alloc_coherent(pcdev->dev, pxa_dma->sg_size, |
| 216 | &pxa_dma->sg_dma, GFP_KERNEL); |
| 217 | if (!pxa_dma->sg_cpu) |
| 218 | return -ENOMEM; |
| 219 | |
| 220 | pxa_dma->sglen = sglen; |
| 221 | |
| 222 | for (i = 0; i < sglen; i++) { |
| 223 | int sg_i = sg_start + i; |
| 224 | struct scatterlist *sg = dma->sglist; |
| 225 | unsigned int dma_len = sg_dma_len(&sg[sg_i]), xfer_len; |
| 226 | |
| 227 | pxa_dma->sg_cpu[i].dsadr = pcdev->res->start + cibr; |
| 228 | pxa_dma->sg_cpu[i].dtadr = sg_dma_address(&sg[sg_i]); |
| 229 | |
| 230 | /* PXA27x Developer's Manual 27.4.4.1: round up to 8 bytes */ |
| 231 | xfer_len = (min(dma_len, size) + 7) & ~7; |
| 232 | |
| 233 | pxa_dma->sg_cpu[i].dcmd = |
| 234 | DCMD_FLOWSRC | DCMD_BURST8 | DCMD_INCTRGADDR | xfer_len; |
| 235 | size -= dma_len; |
| 236 | pxa_dma->sg_cpu[i].ddadr = |
| 237 | pxa_dma->sg_dma + (i + 1) * sizeof(struct pxa_dma_desc); |
| 238 | } |
| 239 | |
| 240 | pxa_dma->sg_cpu[sglen - 1].ddadr = DDADR_STOP; |
| 241 | pxa_dma->sg_cpu[sglen - 1].dcmd |= DCMD_ENDIRQEN; |
| 242 | |
| 243 | return 0; |
| 244 | } |
| 245 | |
Guennadi Liakhovetski | 7102b77 | 2008-04-15 02:57:48 -0300 | [diff] [blame] | 246 | static int pxa_videobuf_prepare(struct videobuf_queue *vq, |
| 247 | struct videobuf_buffer *vb, enum v4l2_field field) |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 248 | { |
| 249 | struct soc_camera_device *icd = vq->priv_data; |
| 250 | struct soc_camera_host *ici = |
| 251 | to_soc_camera_host(icd->dev.parent); |
| 252 | struct pxa_camera_dev *pcdev = ici->priv; |
| 253 | struct pxa_buffer *buf = container_of(vb, struct pxa_buffer, vb); |
Mike Rapoport | a5462e5 | 2008-04-22 10:36:32 -0300 | [diff] [blame] | 254 | int ret; |
| 255 | int sglen_y, sglen_yu = 0, sglen_u = 0, sglen_v = 0; |
| 256 | int size_y, size_u = 0, size_v = 0; |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 257 | |
Harvey Harrison | 7e28adb | 2008-04-08 23:20:00 -0300 | [diff] [blame] | 258 | dev_dbg(&icd->dev, "%s (vb=0x%p) 0x%08lx %d\n", __func__, |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 259 | vb, vb->baddr, vb->bsize); |
| 260 | |
| 261 | /* Added list head initialization on alloc */ |
| 262 | WARN_ON(!list_empty(&vb->queue)); |
| 263 | |
| 264 | #ifdef DEBUG |
| 265 | /* This can be useful if you want to see if we actually fill |
| 266 | * the buffer with something */ |
| 267 | memset((void *)vb->baddr, 0xaa, vb->bsize); |
| 268 | #endif |
| 269 | |
| 270 | BUG_ON(NULL == icd->current_fmt); |
| 271 | |
| 272 | /* I think, in buf_prepare you only have to protect global data, |
| 273 | * the actual buffer is yours */ |
| 274 | buf->inwork = 1; |
| 275 | |
| 276 | if (buf->fmt != icd->current_fmt || |
| 277 | vb->width != icd->width || |
| 278 | vb->height != icd->height || |
| 279 | vb->field != field) { |
| 280 | buf->fmt = icd->current_fmt; |
| 281 | vb->width = icd->width; |
| 282 | vb->height = icd->height; |
| 283 | vb->field = field; |
| 284 | vb->state = VIDEOBUF_NEEDS_INIT; |
| 285 | } |
| 286 | |
| 287 | vb->size = vb->width * vb->height * ((buf->fmt->depth + 7) >> 3); |
| 288 | if (0 != vb->baddr && vb->bsize < vb->size) { |
| 289 | ret = -EINVAL; |
| 290 | goto out; |
| 291 | } |
| 292 | |
| 293 | if (vb->state == VIDEOBUF_NEEDS_INIT) { |
| 294 | unsigned int size = vb->size; |
| 295 | struct videobuf_dmabuf *dma = videobuf_to_dma(vb); |
| 296 | |
| 297 | ret = videobuf_iolock(vq, vb, NULL); |
| 298 | if (ret) |
| 299 | goto fail; |
| 300 | |
Guennadi Liakhovetski | 5aa2110 | 2008-04-22 10:40:23 -0300 | [diff] [blame] | 301 | if (pcdev->channels == 3) { |
Mike Rapoport | a5462e5 | 2008-04-22 10:36:32 -0300 | [diff] [blame] | 302 | /* FIXME the calculations should be more precise */ |
| 303 | sglen_y = dma->sglen / 2; |
| 304 | sglen_u = sglen_v = dma->sglen / 4 + 1; |
| 305 | sglen_yu = sglen_y + sglen_u; |
| 306 | size_y = size / 2; |
| 307 | size_u = size_v = size / 4; |
| 308 | } else { |
| 309 | sglen_y = dma->sglen; |
| 310 | size_y = size; |
| 311 | } |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 312 | |
Mike Rapoport | a5462e5 | 2008-04-22 10:36:32 -0300 | [diff] [blame] | 313 | /* init DMA for Y channel */ |
| 314 | ret = pxa_init_dma_channel(pcdev, buf, dma, 0, sglen_y, |
| 315 | 0, 0x28, size_y); |
| 316 | |
| 317 | if (ret) { |
| 318 | dev_err(pcdev->dev, |
| 319 | "DMA initialization for Y/RGB failed\n"); |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 320 | goto fail; |
| 321 | } |
| 322 | |
Guennadi Liakhovetski | 5aa2110 | 2008-04-22 10:40:23 -0300 | [diff] [blame] | 323 | if (pcdev->channels == 3) { |
Mike Rapoport | a5462e5 | 2008-04-22 10:36:32 -0300 | [diff] [blame] | 324 | /* init DMA for U channel */ |
| 325 | ret = pxa_init_dma_channel(pcdev, buf, dma, 1, sglen_u, |
| 326 | sglen_y, 0x30, size_u); |
| 327 | if (ret) { |
| 328 | dev_err(pcdev->dev, |
| 329 | "DMA initialization for U failed\n"); |
| 330 | goto fail_u; |
| 331 | } |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 332 | |
Mike Rapoport | a5462e5 | 2008-04-22 10:36:32 -0300 | [diff] [blame] | 333 | /* init DMA for V channel */ |
| 334 | ret = pxa_init_dma_channel(pcdev, buf, dma, 2, sglen_v, |
| 335 | sglen_yu, 0x38, size_v); |
| 336 | if (ret) { |
| 337 | dev_err(pcdev->dev, |
| 338 | "DMA initialization for V failed\n"); |
| 339 | goto fail_v; |
| 340 | } |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 341 | } |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 342 | |
| 343 | vb->state = VIDEOBUF_PREPARED; |
| 344 | } |
| 345 | |
| 346 | buf->inwork = 0; |
Mike Rapoport | a5462e5 | 2008-04-22 10:36:32 -0300 | [diff] [blame] | 347 | buf->active_dma = DMA_Y; |
Guennadi Liakhovetski | 5aa2110 | 2008-04-22 10:40:23 -0300 | [diff] [blame] | 348 | if (pcdev->channels == 3) |
Mike Rapoport | a5462e5 | 2008-04-22 10:36:32 -0300 | [diff] [blame] | 349 | buf->active_dma |= DMA_U | DMA_V; |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 350 | |
| 351 | return 0; |
| 352 | |
Mike Rapoport | a5462e5 | 2008-04-22 10:36:32 -0300 | [diff] [blame] | 353 | fail_v: |
| 354 | dma_free_coherent(pcdev->dev, buf->dmas[1].sg_size, |
| 355 | buf->dmas[1].sg_cpu, buf->dmas[1].sg_dma); |
| 356 | fail_u: |
| 357 | dma_free_coherent(pcdev->dev, buf->dmas[0].sg_size, |
| 358 | buf->dmas[0].sg_cpu, buf->dmas[0].sg_dma); |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 359 | fail: |
| 360 | free_buffer(vq, buf); |
| 361 | out: |
| 362 | buf->inwork = 0; |
| 363 | return ret; |
| 364 | } |
| 365 | |
Guennadi Liakhovetski | 7102b77 | 2008-04-15 02:57:48 -0300 | [diff] [blame] | 366 | static void pxa_videobuf_queue(struct videobuf_queue *vq, |
| 367 | struct videobuf_buffer *vb) |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 368 | { |
| 369 | struct soc_camera_device *icd = vq->priv_data; |
| 370 | struct soc_camera_host *ici = |
| 371 | to_soc_camera_host(icd->dev.parent); |
| 372 | struct pxa_camera_dev *pcdev = ici->priv; |
| 373 | struct pxa_buffer *buf = container_of(vb, struct pxa_buffer, vb); |
Guennadi Liakhovetski | 7102b77 | 2008-04-15 02:57:48 -0300 | [diff] [blame] | 374 | struct pxa_buffer *active; |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 375 | unsigned long flags; |
Guennadi Liakhovetski | 5aa2110 | 2008-04-22 10:40:23 -0300 | [diff] [blame] | 376 | int i; |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 377 | |
Harvey Harrison | 7e28adb | 2008-04-08 23:20:00 -0300 | [diff] [blame] | 378 | dev_dbg(&icd->dev, "%s (vb=0x%p) 0x%08lx %d\n", __func__, |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 379 | vb, vb->baddr, vb->bsize); |
| 380 | spin_lock_irqsave(&pcdev->lock, flags); |
| 381 | |
| 382 | list_add_tail(&vb->queue, &pcdev->capture); |
| 383 | |
| 384 | vb->state = VIDEOBUF_ACTIVE; |
Guennadi Liakhovetski | 7102b77 | 2008-04-15 02:57:48 -0300 | [diff] [blame] | 385 | active = pcdev->active; |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 386 | |
Guennadi Liakhovetski | 7102b77 | 2008-04-15 02:57:48 -0300 | [diff] [blame] | 387 | if (!active) { |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 388 | CIFR |= CIFR_RESET_F; |
Mike Rapoport | a5462e5 | 2008-04-22 10:36:32 -0300 | [diff] [blame] | 389 | |
Guennadi Liakhovetski | 5aa2110 | 2008-04-22 10:40:23 -0300 | [diff] [blame] | 390 | for (i = 0; i < pcdev->channels; i++) { |
| 391 | DDADR(pcdev->dma_chans[i]) = buf->dmas[i].sg_dma; |
| 392 | DCSR(pcdev->dma_chans[i]) = DCSR_RUN; |
| 393 | pcdev->sg_tail[i] = buf->dmas[i].sg_cpu + buf->dmas[i].sglen - 1; |
Mike Rapoport | a5462e5 | 2008-04-22 10:36:32 -0300 | [diff] [blame] | 394 | } |
| 395 | |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 396 | pcdev->active = buf; |
| 397 | CICR0 |= CICR0_ENB; |
| 398 | } else { |
Mike Rapoport | a5462e5 | 2008-04-22 10:36:32 -0300 | [diff] [blame] | 399 | struct pxa_cam_dma *buf_dma; |
| 400 | struct pxa_cam_dma *act_dma; |
Mike Rapoport | a5462e5 | 2008-04-22 10:36:32 -0300 | [diff] [blame] | 401 | int nents; |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 402 | |
Guennadi Liakhovetski | e7c5068 | 2008-04-22 10:37:49 -0300 | [diff] [blame] | 403 | for (i = 0; i < pcdev->channels; i++) { |
Mike Rapoport | a5462e5 | 2008-04-22 10:36:32 -0300 | [diff] [blame] | 404 | buf_dma = &buf->dmas[i]; |
| 405 | act_dma = &active->dmas[i]; |
| 406 | nents = buf_dma->sglen; |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 407 | |
Mike Rapoport | a5462e5 | 2008-04-22 10:36:32 -0300 | [diff] [blame] | 408 | /* Stop DMA engine */ |
| 409 | DCSR(pcdev->dma_chans[i]) = 0; |
| 410 | |
| 411 | /* Add the descriptors we just initialized to |
| 412 | the currently running chain */ |
Guennadi Liakhovetski | 5aa2110 | 2008-04-22 10:40:23 -0300 | [diff] [blame] | 413 | pcdev->sg_tail[i]->ddadr = buf_dma->sg_dma; |
| 414 | pcdev->sg_tail[i] = buf_dma->sg_cpu + buf_dma->sglen - 1; |
Mike Rapoport | a5462e5 | 2008-04-22 10:36:32 -0300 | [diff] [blame] | 415 | |
| 416 | /* Setup a dummy descriptor with the DMA engines current |
| 417 | * state |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 418 | */ |
Mike Rapoport | a5462e5 | 2008-04-22 10:36:32 -0300 | [diff] [blame] | 419 | buf_dma->sg_cpu[nents].dsadr = |
| 420 | pcdev->res->start + 0x28 + i*8; /* CIBRx */ |
| 421 | buf_dma->sg_cpu[nents].dtadr = |
| 422 | DTADR(pcdev->dma_chans[i]); |
| 423 | buf_dma->sg_cpu[nents].dcmd = |
| 424 | DCMD(pcdev->dma_chans[i]); |
| 425 | |
| 426 | if (DDADR(pcdev->dma_chans[i]) == DDADR_STOP) { |
| 427 | /* The DMA engine is on the last |
| 428 | descriptor, set the next descriptors |
| 429 | address to the descriptors we just |
| 430 | initialized */ |
| 431 | buf_dma->sg_cpu[nents].ddadr = buf_dma->sg_dma; |
| 432 | } else { |
| 433 | buf_dma->sg_cpu[nents].ddadr = |
| 434 | DDADR(pcdev->dma_chans[i]); |
| 435 | } |
| 436 | |
| 437 | /* The next descriptor is the dummy descriptor */ |
| 438 | DDADR(pcdev->dma_chans[i]) = buf_dma->sg_dma + nents * |
| 439 | sizeof(struct pxa_dma_desc); |
| 440 | |
| 441 | DCSR(pcdev->dma_chans[i]) = DCSR_RUN; |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 442 | } |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 443 | } |
| 444 | |
| 445 | spin_unlock_irqrestore(&pcdev->lock, flags); |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 446 | } |
| 447 | |
| 448 | static void pxa_videobuf_release(struct videobuf_queue *vq, |
| 449 | struct videobuf_buffer *vb) |
| 450 | { |
| 451 | struct pxa_buffer *buf = container_of(vb, struct pxa_buffer, vb); |
| 452 | #ifdef DEBUG |
| 453 | struct soc_camera_device *icd = vq->priv_data; |
| 454 | |
Harvey Harrison | 7e28adb | 2008-04-08 23:20:00 -0300 | [diff] [blame] | 455 | dev_dbg(&icd->dev, "%s (vb=0x%p) 0x%08lx %d\n", __func__, |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 456 | vb, vb->baddr, vb->bsize); |
| 457 | |
| 458 | switch (vb->state) { |
| 459 | case VIDEOBUF_ACTIVE: |
Harvey Harrison | 7e28adb | 2008-04-08 23:20:00 -0300 | [diff] [blame] | 460 | dev_dbg(&icd->dev, "%s (active)\n", __func__); |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 461 | break; |
| 462 | case VIDEOBUF_QUEUED: |
Harvey Harrison | 7e28adb | 2008-04-08 23:20:00 -0300 | [diff] [blame] | 463 | dev_dbg(&icd->dev, "%s (queued)\n", __func__); |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 464 | break; |
| 465 | case VIDEOBUF_PREPARED: |
Harvey Harrison | 7e28adb | 2008-04-08 23:20:00 -0300 | [diff] [blame] | 466 | dev_dbg(&icd->dev, "%s (prepared)\n", __func__); |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 467 | break; |
| 468 | default: |
Harvey Harrison | 7e28adb | 2008-04-08 23:20:00 -0300 | [diff] [blame] | 469 | dev_dbg(&icd->dev, "%s (unknown)\n", __func__); |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 470 | break; |
| 471 | } |
| 472 | #endif |
| 473 | |
| 474 | free_buffer(vq, buf); |
| 475 | } |
| 476 | |
Mike Rapoport | a5462e5 | 2008-04-22 10:36:32 -0300 | [diff] [blame] | 477 | static void pxa_camera_wakeup(struct pxa_camera_dev *pcdev, |
| 478 | struct videobuf_buffer *vb, |
| 479 | struct pxa_buffer *buf) |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 480 | { |
Mike Rapoport | a5462e5 | 2008-04-22 10:36:32 -0300 | [diff] [blame] | 481 | /* _init is used to debug races, see comment in pxa_camera_reqbufs() */ |
| 482 | list_del_init(&vb->queue); |
| 483 | vb->state = VIDEOBUF_DONE; |
| 484 | do_gettimeofday(&vb->ts); |
| 485 | vb->field_count++; |
| 486 | wake_up(&vb->done); |
| 487 | |
| 488 | if (list_empty(&pcdev->capture)) { |
| 489 | pcdev->active = NULL; |
| 490 | DCSR(pcdev->dma_chans[0]) = 0; |
| 491 | DCSR(pcdev->dma_chans[1]) = 0; |
| 492 | DCSR(pcdev->dma_chans[2]) = 0; |
| 493 | CICR0 &= ~CICR0_ENB; |
| 494 | return; |
| 495 | } |
| 496 | |
| 497 | pcdev->active = list_entry(pcdev->capture.next, |
| 498 | struct pxa_buffer, vb.queue); |
| 499 | } |
| 500 | |
| 501 | static void pxa_camera_dma_irq(int channel, struct pxa_camera_dev *pcdev, |
| 502 | enum pxa_camera_active_dma act_dma) |
| 503 | { |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 504 | struct pxa_buffer *buf; |
| 505 | unsigned long flags; |
Guennadi Liakhovetski | e7c5068 | 2008-04-22 10:37:49 -0300 | [diff] [blame] | 506 | u32 status, camera_status, overrun; |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 507 | struct videobuf_buffer *vb; |
| 508 | |
| 509 | spin_lock_irqsave(&pcdev->lock, flags); |
| 510 | |
Mike Rapoport | a5462e5 | 2008-04-22 10:36:32 -0300 | [diff] [blame] | 511 | status = DCSR(channel); |
| 512 | DCSR(channel) = status | DCSR_ENDINTR; |
Guennadi Liakhovetski | 7102b77 | 2008-04-15 02:57:48 -0300 | [diff] [blame] | 513 | |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 514 | if (status & DCSR_BUSERR) { |
Guennadi Liakhovetski | 7102b77 | 2008-04-15 02:57:48 -0300 | [diff] [blame] | 515 | dev_err(pcdev->dev, "DMA Bus Error IRQ!\n"); |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 516 | goto out; |
| 517 | } |
| 518 | |
| 519 | if (!(status & DCSR_ENDINTR)) { |
Guennadi Liakhovetski | 7102b77 | 2008-04-15 02:57:48 -0300 | [diff] [blame] | 520 | dev_err(pcdev->dev, "Unknown DMA IRQ source, " |
| 521 | "status: 0x%08x\n", status); |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 522 | goto out; |
| 523 | } |
| 524 | |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 525 | if (!pcdev->active) { |
Guennadi Liakhovetski | 7102b77 | 2008-04-15 02:57:48 -0300 | [diff] [blame] | 526 | dev_err(pcdev->dev, "DMA End IRQ with no active buffer!\n"); |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 527 | goto out; |
| 528 | } |
| 529 | |
Guennadi Liakhovetski | e7c5068 | 2008-04-22 10:37:49 -0300 | [diff] [blame] | 530 | camera_status = CISR; |
| 531 | overrun = CISR_IFO_0; |
| 532 | if (pcdev->channels == 3) |
| 533 | overrun |= CISR_IFO_1 | CISR_IFO_2; |
| 534 | if (camera_status & overrun) { |
| 535 | dev_dbg(pcdev->dev, "FIFO overrun! CISR: %x\n", camera_status); |
| 536 | /* Stop the Capture Interface */ |
| 537 | CICR0 &= ~CICR0_ENB; |
| 538 | /* Stop DMA */ |
| 539 | DCSR(channel) = 0; |
| 540 | /* Reset the FIFOs */ |
| 541 | CIFR |= CIFR_RESET_F; |
| 542 | /* Enable End-Of-Frame Interrupt */ |
| 543 | CICR0 &= ~CICR0_EOFM; |
| 544 | /* Restart the Capture Interface */ |
| 545 | CICR0 |= CICR0_ENB; |
| 546 | goto out; |
| 547 | } |
| 548 | |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 549 | vb = &pcdev->active->vb; |
| 550 | buf = container_of(vb, struct pxa_buffer, vb); |
| 551 | WARN_ON(buf->inwork || list_empty(&vb->queue)); |
Harvey Harrison | 7e28adb | 2008-04-08 23:20:00 -0300 | [diff] [blame] | 552 | dev_dbg(pcdev->dev, "%s (vb=0x%p) 0x%08lx %d\n", __func__, |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 553 | vb, vb->baddr, vb->bsize); |
| 554 | |
Mike Rapoport | a5462e5 | 2008-04-22 10:36:32 -0300 | [diff] [blame] | 555 | buf->active_dma &= ~act_dma; |
| 556 | if (!buf->active_dma) |
| 557 | pxa_camera_wakeup(pcdev, vb, buf); |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 558 | |
| 559 | out: |
| 560 | spin_unlock_irqrestore(&pcdev->lock, flags); |
| 561 | } |
| 562 | |
Mike Rapoport | a5462e5 | 2008-04-22 10:36:32 -0300 | [diff] [blame] | 563 | static void pxa_camera_dma_irq_y(int channel, void *data) |
| 564 | { |
| 565 | struct pxa_camera_dev *pcdev = data; |
| 566 | pxa_camera_dma_irq(channel, pcdev, DMA_Y); |
| 567 | } |
| 568 | |
| 569 | static void pxa_camera_dma_irq_u(int channel, void *data) |
| 570 | { |
| 571 | struct pxa_camera_dev *pcdev = data; |
| 572 | pxa_camera_dma_irq(channel, pcdev, DMA_U); |
| 573 | } |
| 574 | |
| 575 | static void pxa_camera_dma_irq_v(int channel, void *data) |
| 576 | { |
| 577 | struct pxa_camera_dev *pcdev = data; |
| 578 | pxa_camera_dma_irq(channel, pcdev, DMA_V); |
| 579 | } |
| 580 | |
Guennadi Liakhovetski | 7102b77 | 2008-04-15 02:57:48 -0300 | [diff] [blame] | 581 | static struct videobuf_queue_ops pxa_videobuf_ops = { |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 582 | .buf_setup = pxa_videobuf_setup, |
| 583 | .buf_prepare = pxa_videobuf_prepare, |
| 584 | .buf_queue = pxa_videobuf_queue, |
| 585 | .buf_release = pxa_videobuf_release, |
| 586 | }; |
| 587 | |
Magnus Damm | a034d1b | 2008-07-11 20:59:34 -0300 | [diff] [blame] | 588 | static void pxa_camera_init_videobuf(struct videobuf_queue *q, |
Paulius Zaleckas | 092d392 | 2008-07-11 20:50:31 -0300 | [diff] [blame] | 589 | struct soc_camera_device *icd) |
| 590 | { |
Magnus Damm | a034d1b | 2008-07-11 20:59:34 -0300 | [diff] [blame] | 591 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
| 592 | struct pxa_camera_dev *pcdev = ici->priv; |
| 593 | |
Paulius Zaleckas | 092d392 | 2008-07-11 20:50:31 -0300 | [diff] [blame] | 594 | /* We must pass NULL as dev pointer, then all pci_* dma operations |
| 595 | * transform to normal dma_* ones. */ |
Magnus Damm | a034d1b | 2008-07-11 20:59:34 -0300 | [diff] [blame] | 596 | videobuf_queue_sg_init(q, &pxa_videobuf_ops, NULL, &pcdev->lock, |
Paulius Zaleckas | 092d392 | 2008-07-11 20:50:31 -0300 | [diff] [blame] | 597 | V4L2_BUF_TYPE_VIDEO_CAPTURE, V4L2_FIELD_NONE, |
| 598 | sizeof(struct pxa_buffer), icd); |
| 599 | } |
| 600 | |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 601 | static int mclk_get_divisor(struct pxa_camera_dev *pcdev) |
| 602 | { |
| 603 | unsigned int mclk_10khz = pcdev->platform_mclk_10khz; |
| 604 | unsigned long div; |
| 605 | unsigned long lcdclk; |
| 606 | |
| 607 | lcdclk = clk_get_rate(pcdev->clk) / 10000; |
| 608 | |
| 609 | /* We verify platform_mclk_10khz != 0, so if anyone breaks it, here |
| 610 | * they get a nice Oops */ |
| 611 | div = (lcdclk + 2 * mclk_10khz - 1) / (2 * mclk_10khz) - 1; |
| 612 | |
| 613 | dev_dbg(pcdev->dev, "LCD clock %lukHz, target freq %dkHz, " |
| 614 | "divisor %lu\n", lcdclk * 10, mclk_10khz * 10, div); |
| 615 | |
| 616 | return div; |
| 617 | } |
| 618 | |
Guennadi Liakhovetski | 7102b77 | 2008-04-15 02:57:48 -0300 | [diff] [blame] | 619 | static void pxa_camera_activate(struct pxa_camera_dev *pcdev) |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 620 | { |
| 621 | struct pxacamera_platform_data *pdata = pcdev->pdata; |
| 622 | u32 cicr4 = 0; |
| 623 | |
| 624 | dev_dbg(pcdev->dev, "Registered platform device at %p data %p\n", |
| 625 | pcdev, pdata); |
| 626 | |
| 627 | if (pdata && pdata->init) { |
Harvey Harrison | 7e28adb | 2008-04-08 23:20:00 -0300 | [diff] [blame] | 628 | dev_dbg(pcdev->dev, "%s: Init gpios\n", __func__); |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 629 | pdata->init(pcdev->dev); |
| 630 | } |
| 631 | |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 632 | CICR0 = 0x3FF; /* disable all interrupts */ |
| 633 | |
| 634 | if (pcdev->platform_flags & PXA_CAMERA_PCLK_EN) |
| 635 | cicr4 |= CICR4_PCLK_EN; |
| 636 | if (pcdev->platform_flags & PXA_CAMERA_MCLK_EN) |
| 637 | cicr4 |= CICR4_MCLK_EN; |
| 638 | if (pcdev->platform_flags & PXA_CAMERA_PCP) |
| 639 | cicr4 |= CICR4_PCP; |
| 640 | if (pcdev->platform_flags & PXA_CAMERA_HSP) |
| 641 | cicr4 |= CICR4_HSP; |
| 642 | if (pcdev->platform_flags & PXA_CAMERA_VSP) |
| 643 | cicr4 |= CICR4_VSP; |
| 644 | |
| 645 | CICR4 = mclk_get_divisor(pcdev) | cicr4; |
| 646 | |
| 647 | clk_enable(pcdev->clk); |
| 648 | } |
| 649 | |
Guennadi Liakhovetski | 7102b77 | 2008-04-15 02:57:48 -0300 | [diff] [blame] | 650 | static void pxa_camera_deactivate(struct pxa_camera_dev *pcdev) |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 651 | { |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 652 | clk_disable(pcdev->clk); |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 653 | } |
| 654 | |
| 655 | static irqreturn_t pxa_camera_irq(int irq, void *data) |
| 656 | { |
| 657 | struct pxa_camera_dev *pcdev = data; |
| 658 | unsigned int status = CISR; |
| 659 | |
| 660 | dev_dbg(pcdev->dev, "Camera interrupt status 0x%x\n", status); |
| 661 | |
Guennadi Liakhovetski | e7c5068 | 2008-04-22 10:37:49 -0300 | [diff] [blame] | 662 | if (!status) |
| 663 | return IRQ_NONE; |
| 664 | |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 665 | CISR = status; |
Guennadi Liakhovetski | e7c5068 | 2008-04-22 10:37:49 -0300 | [diff] [blame] | 666 | |
| 667 | if (status & CISR_EOF) { |
| 668 | int i; |
| 669 | for (i = 0; i < pcdev->channels; i++) { |
| 670 | DDADR(pcdev->dma_chans[i]) = |
| 671 | pcdev->active->dmas[i].sg_dma; |
| 672 | DCSR(pcdev->dma_chans[i]) = DCSR_RUN; |
| 673 | } |
| 674 | CICR0 |= CICR0_EOFM; |
| 675 | } |
| 676 | |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 677 | return IRQ_HANDLED; |
| 678 | } |
| 679 | |
| 680 | /* The following two functions absolutely depend on the fact, that |
| 681 | * there can be only one camera on PXA quick capture interface */ |
Guennadi Liakhovetski | 7102b77 | 2008-04-15 02:57:48 -0300 | [diff] [blame] | 682 | static int pxa_camera_add_device(struct soc_camera_device *icd) |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 683 | { |
| 684 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
| 685 | struct pxa_camera_dev *pcdev = ici->priv; |
| 686 | int ret; |
| 687 | |
| 688 | mutex_lock(&camera_lock); |
| 689 | |
| 690 | if (pcdev->icd) { |
| 691 | ret = -EBUSY; |
| 692 | goto ebusy; |
| 693 | } |
| 694 | |
| 695 | dev_info(&icd->dev, "PXA Camera driver attached to camera %d\n", |
| 696 | icd->devnum); |
| 697 | |
Guennadi Liakhovetski | 7102b77 | 2008-04-15 02:57:48 -0300 | [diff] [blame] | 698 | pxa_camera_activate(pcdev); |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 699 | ret = icd->ops->init(icd); |
| 700 | |
| 701 | if (!ret) |
| 702 | pcdev->icd = icd; |
| 703 | |
| 704 | ebusy: |
| 705 | mutex_unlock(&camera_lock); |
| 706 | |
| 707 | return ret; |
| 708 | } |
| 709 | |
Guennadi Liakhovetski | 7102b77 | 2008-04-15 02:57:48 -0300 | [diff] [blame] | 710 | static void pxa_camera_remove_device(struct soc_camera_device *icd) |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 711 | { |
| 712 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
| 713 | struct pxa_camera_dev *pcdev = ici->priv; |
| 714 | |
| 715 | BUG_ON(icd != pcdev->icd); |
| 716 | |
| 717 | dev_info(&icd->dev, "PXA Camera driver detached from camera %d\n", |
| 718 | icd->devnum); |
| 719 | |
| 720 | /* disable capture, disable interrupts */ |
| 721 | CICR0 = 0x3ff; |
Mike Rapoport | a5462e5 | 2008-04-22 10:36:32 -0300 | [diff] [blame] | 722 | |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 723 | /* Stop DMA engine */ |
Mike Rapoport | a5462e5 | 2008-04-22 10:36:32 -0300 | [diff] [blame] | 724 | DCSR(pcdev->dma_chans[0]) = 0; |
| 725 | DCSR(pcdev->dma_chans[1]) = 0; |
| 726 | DCSR(pcdev->dma_chans[2]) = 0; |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 727 | |
| 728 | icd->ops->release(icd); |
| 729 | |
Guennadi Liakhovetski | 7102b77 | 2008-04-15 02:57:48 -0300 | [diff] [blame] | 730 | pxa_camera_deactivate(pcdev); |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 731 | |
| 732 | pcdev->icd = NULL; |
| 733 | } |
| 734 | |
Guennadi Liakhovetski | ad5f2e8 | 2008-03-07 21:57:18 -0300 | [diff] [blame] | 735 | static int test_platform_param(struct pxa_camera_dev *pcdev, |
| 736 | unsigned char buswidth, unsigned long *flags) |
| 737 | { |
| 738 | /* |
| 739 | * Platform specified synchronization and pixel clock polarities are |
| 740 | * only a recommendation and are only used during probing. The PXA270 |
| 741 | * quick capture interface supports both. |
| 742 | */ |
| 743 | *flags = (pcdev->platform_flags & PXA_CAMERA_MASTER ? |
| 744 | SOCAM_MASTER : SOCAM_SLAVE) | |
| 745 | SOCAM_HSYNC_ACTIVE_HIGH | |
| 746 | SOCAM_HSYNC_ACTIVE_LOW | |
| 747 | SOCAM_VSYNC_ACTIVE_HIGH | |
| 748 | SOCAM_VSYNC_ACTIVE_LOW | |
| 749 | SOCAM_PCLK_SAMPLE_RISING | |
| 750 | SOCAM_PCLK_SAMPLE_FALLING; |
| 751 | |
| 752 | /* If requested data width is supported by the platform, use it */ |
| 753 | switch (buswidth) { |
| 754 | case 10: |
| 755 | if (!(pcdev->platform_flags & PXA_CAMERA_DATAWIDTH_10)) |
| 756 | return -EINVAL; |
| 757 | *flags |= SOCAM_DATAWIDTH_10; |
| 758 | break; |
| 759 | case 9: |
| 760 | if (!(pcdev->platform_flags & PXA_CAMERA_DATAWIDTH_9)) |
| 761 | return -EINVAL; |
| 762 | *flags |= SOCAM_DATAWIDTH_9; |
| 763 | break; |
| 764 | case 8: |
| 765 | if (!(pcdev->platform_flags & PXA_CAMERA_DATAWIDTH_8)) |
| 766 | return -EINVAL; |
| 767 | *flags |= SOCAM_DATAWIDTH_8; |
Robert Jarzmik | 2a48fc7 | 2008-12-01 09:45:35 -0300 | [diff] [blame] | 768 | break; |
| 769 | default: |
| 770 | return -EINVAL; |
Guennadi Liakhovetski | ad5f2e8 | 2008-03-07 21:57:18 -0300 | [diff] [blame] | 771 | } |
| 772 | |
| 773 | return 0; |
| 774 | } |
| 775 | |
| 776 | static int pxa_camera_set_bus_param(struct soc_camera_device *icd, __u32 pixfmt) |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 777 | { |
| 778 | struct soc_camera_host *ici = |
| 779 | to_soc_camera_host(icd->dev.parent); |
| 780 | struct pxa_camera_dev *pcdev = ici->priv; |
Guennadi Liakhovetski | ad5f2e8 | 2008-03-07 21:57:18 -0300 | [diff] [blame] | 781 | unsigned long dw, bpp, bus_flags, camera_flags, common_flags; |
Mike Rapoport | a5462e5 | 2008-04-22 10:36:32 -0300 | [diff] [blame] | 782 | u32 cicr0, cicr1, cicr4 = 0; |
Guennadi Liakhovetski | ad5f2e8 | 2008-03-07 21:57:18 -0300 | [diff] [blame] | 783 | int ret = test_platform_param(pcdev, icd->buswidth, &bus_flags); |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 784 | |
Guennadi Liakhovetski | ad5f2e8 | 2008-03-07 21:57:18 -0300 | [diff] [blame] | 785 | if (ret < 0) |
| 786 | return ret; |
| 787 | |
| 788 | camera_flags = icd->ops->query_bus_param(icd); |
| 789 | |
| 790 | common_flags = soc_camera_bus_param_compatible(camera_flags, bus_flags); |
| 791 | if (!common_flags) |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 792 | return -EINVAL; |
| 793 | |
Guennadi Liakhovetski | e7c5068 | 2008-04-22 10:37:49 -0300 | [diff] [blame] | 794 | pcdev->channels = 1; |
| 795 | |
Guennadi Liakhovetski | ad5f2e8 | 2008-03-07 21:57:18 -0300 | [diff] [blame] | 796 | /* Make choises, based on platform preferences */ |
| 797 | if ((common_flags & SOCAM_HSYNC_ACTIVE_HIGH) && |
| 798 | (common_flags & SOCAM_HSYNC_ACTIVE_LOW)) { |
| 799 | if (pcdev->platform_flags & PXA_CAMERA_HSP) |
| 800 | common_flags &= ~SOCAM_HSYNC_ACTIVE_HIGH; |
| 801 | else |
| 802 | common_flags &= ~SOCAM_HSYNC_ACTIVE_LOW; |
| 803 | } |
| 804 | |
| 805 | if ((common_flags & SOCAM_VSYNC_ACTIVE_HIGH) && |
| 806 | (common_flags & SOCAM_VSYNC_ACTIVE_LOW)) { |
| 807 | if (pcdev->platform_flags & PXA_CAMERA_VSP) |
| 808 | common_flags &= ~SOCAM_VSYNC_ACTIVE_HIGH; |
| 809 | else |
| 810 | common_flags &= ~SOCAM_VSYNC_ACTIVE_LOW; |
| 811 | } |
| 812 | |
| 813 | if ((common_flags & SOCAM_PCLK_SAMPLE_RISING) && |
| 814 | (common_flags & SOCAM_PCLK_SAMPLE_FALLING)) { |
| 815 | if (pcdev->platform_flags & PXA_CAMERA_PCP) |
| 816 | common_flags &= ~SOCAM_PCLK_SAMPLE_RISING; |
| 817 | else |
| 818 | common_flags &= ~SOCAM_PCLK_SAMPLE_FALLING; |
| 819 | } |
| 820 | |
| 821 | ret = icd->ops->set_bus_param(icd, common_flags); |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 822 | if (ret < 0) |
| 823 | return ret; |
| 824 | |
| 825 | /* Datawidth is now guaranteed to be equal to one of the three values. |
| 826 | * We fix bit-per-pixel equal to data-width... */ |
Guennadi Liakhovetski | ad5f2e8 | 2008-03-07 21:57:18 -0300 | [diff] [blame] | 827 | switch (common_flags & SOCAM_DATAWIDTH_MASK) { |
| 828 | case SOCAM_DATAWIDTH_10: |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 829 | dw = 4; |
| 830 | bpp = 0x40; |
| 831 | break; |
Guennadi Liakhovetski | ad5f2e8 | 2008-03-07 21:57:18 -0300 | [diff] [blame] | 832 | case SOCAM_DATAWIDTH_9: |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 833 | dw = 3; |
| 834 | bpp = 0x20; |
| 835 | break; |
| 836 | default: |
| 837 | /* Actually it can only be 8 now, |
| 838 | * default is just to silence compiler warnings */ |
Guennadi Liakhovetski | ad5f2e8 | 2008-03-07 21:57:18 -0300 | [diff] [blame] | 839 | case SOCAM_DATAWIDTH_8: |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 840 | dw = 2; |
| 841 | bpp = 0; |
| 842 | } |
| 843 | |
| 844 | if (pcdev->platform_flags & PXA_CAMERA_PCLK_EN) |
| 845 | cicr4 |= CICR4_PCLK_EN; |
| 846 | if (pcdev->platform_flags & PXA_CAMERA_MCLK_EN) |
| 847 | cicr4 |= CICR4_MCLK_EN; |
Guennadi Liakhovetski | ad5f2e8 | 2008-03-07 21:57:18 -0300 | [diff] [blame] | 848 | if (common_flags & SOCAM_PCLK_SAMPLE_FALLING) |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 849 | cicr4 |= CICR4_PCP; |
Guennadi Liakhovetski | ad5f2e8 | 2008-03-07 21:57:18 -0300 | [diff] [blame] | 850 | if (common_flags & SOCAM_HSYNC_ACTIVE_LOW) |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 851 | cicr4 |= CICR4_HSP; |
Guennadi Liakhovetski | ad5f2e8 | 2008-03-07 21:57:18 -0300 | [diff] [blame] | 852 | if (common_flags & SOCAM_VSYNC_ACTIVE_LOW) |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 853 | cicr4 |= CICR4_VSP; |
| 854 | |
| 855 | cicr0 = CICR0; |
| 856 | if (cicr0 & CICR0_ENB) |
| 857 | CICR0 = cicr0 & ~CICR0_ENB; |
Mike Rapoport | a5462e5 | 2008-04-22 10:36:32 -0300 | [diff] [blame] | 858 | |
| 859 | cicr1 = CICR1_PPL_VAL(icd->width - 1) | bpp | dw; |
| 860 | |
| 861 | switch (pixfmt) { |
| 862 | case V4L2_PIX_FMT_YUV422P: |
Guennadi Liakhovetski | e7c5068 | 2008-04-22 10:37:49 -0300 | [diff] [blame] | 863 | pcdev->channels = 3; |
Mike Rapoport | a5462e5 | 2008-04-22 10:36:32 -0300 | [diff] [blame] | 864 | cicr1 |= CICR1_YCBCR_F; |
Robert Jarzmik | 2a48fc7 | 2008-12-01 09:45:35 -0300 | [diff] [blame] | 865 | /* |
| 866 | * Normally, pxa bus wants as input UYVY format. We allow all |
| 867 | * reorderings of the YUV422 format, as no processing is done, |
| 868 | * and the YUV stream is just passed through without any |
| 869 | * transformation. Note that UYVY is the only format that |
| 870 | * should be used if pxa framebuffer Overlay2 is used. |
| 871 | */ |
| 872 | case V4L2_PIX_FMT_UYVY: |
| 873 | case V4L2_PIX_FMT_VYUY: |
Mike Rapoport | a5462e5 | 2008-04-22 10:36:32 -0300 | [diff] [blame] | 874 | case V4L2_PIX_FMT_YUYV: |
Robert Jarzmik | 2a48fc7 | 2008-12-01 09:45:35 -0300 | [diff] [blame] | 875 | case V4L2_PIX_FMT_YVYU: |
Mike Rapoport | a5462e5 | 2008-04-22 10:36:32 -0300 | [diff] [blame] | 876 | cicr1 |= CICR1_COLOR_SP_VAL(2); |
| 877 | break; |
| 878 | case V4L2_PIX_FMT_RGB555: |
| 879 | cicr1 |= CICR1_RGB_BPP_VAL(1) | CICR1_RGBT_CONV_VAL(2) | |
| 880 | CICR1_TBIT | CICR1_COLOR_SP_VAL(1); |
| 881 | break; |
| 882 | case V4L2_PIX_FMT_RGB565: |
| 883 | cicr1 |= CICR1_COLOR_SP_VAL(1) | CICR1_RGB_BPP_VAL(2); |
| 884 | break; |
| 885 | } |
| 886 | |
| 887 | CICR1 = cicr1; |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 888 | CICR2 = 0; |
Guennadi Liakhovetski | ad5f2e8 | 2008-03-07 21:57:18 -0300 | [diff] [blame] | 889 | CICR3 = CICR3_LPF_VAL(icd->height - 1) | |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 890 | CICR3_BFW_VAL(min((unsigned short)255, icd->y_skip_top)); |
| 891 | CICR4 = mclk_get_divisor(pcdev) | cicr4; |
| 892 | |
| 893 | /* CIF interrupts are not used, only DMA */ |
| 894 | CICR0 = (pcdev->platform_flags & PXA_CAMERA_MASTER ? |
Guennadi Liakhovetski | 7102b77 | 2008-04-15 02:57:48 -0300 | [diff] [blame] | 895 | CICR0_SIM_MP : (CICR0_SL_CAP_EN | CICR0_SIM_SP)) | |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 896 | CICR0_DMAEN | CICR0_IRQ_MASK | (cicr0 & CICR0_ENB); |
| 897 | |
| 898 | return 0; |
| 899 | } |
| 900 | |
Robert Jarzmik | 2a48fc7 | 2008-12-01 09:45:35 -0300 | [diff] [blame] | 901 | static int pxa_camera_try_bus_param(struct soc_camera_device *icd, |
| 902 | unsigned char buswidth) |
Guennadi Liakhovetski | ad5f2e8 | 2008-03-07 21:57:18 -0300 | [diff] [blame] | 903 | { |
| 904 | struct soc_camera_host *ici = |
| 905 | to_soc_camera_host(icd->dev.parent); |
| 906 | struct pxa_camera_dev *pcdev = ici->priv; |
| 907 | unsigned long bus_flags, camera_flags; |
Robert Jarzmik | 2a48fc7 | 2008-12-01 09:45:35 -0300 | [diff] [blame] | 908 | int ret = test_platform_param(pcdev, buswidth, &bus_flags); |
Guennadi Liakhovetski | ad5f2e8 | 2008-03-07 21:57:18 -0300 | [diff] [blame] | 909 | |
| 910 | if (ret < 0) |
| 911 | return ret; |
| 912 | |
| 913 | camera_flags = icd->ops->query_bus_param(icd); |
| 914 | |
| 915 | return soc_camera_bus_param_compatible(camera_flags, bus_flags) ? 0 : -EINVAL; |
| 916 | } |
| 917 | |
Robert Jarzmik | 2a48fc7 | 2008-12-01 09:45:35 -0300 | [diff] [blame] | 918 | static const struct soc_camera_data_format pxa_camera_formats[] = { |
| 919 | { |
| 920 | .name = "Planar YUV422 16 bit", |
| 921 | .depth = 16, |
| 922 | .fourcc = V4L2_PIX_FMT_YUV422P, |
| 923 | .colorspace = V4L2_COLORSPACE_JPEG, |
| 924 | }, |
| 925 | }; |
| 926 | |
| 927 | static bool buswidth_supported(struct soc_camera_device *icd, int depth) |
| 928 | { |
| 929 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
| 930 | struct pxa_camera_dev *pcdev = ici->priv; |
| 931 | |
| 932 | switch (depth) { |
| 933 | case 8: |
| 934 | return !!(pcdev->platform_flags & PXA_CAMERA_DATAWIDTH_8); |
| 935 | case 9: |
| 936 | return !!(pcdev->platform_flags & PXA_CAMERA_DATAWIDTH_9); |
| 937 | case 10: |
| 938 | return !!(pcdev->platform_flags & PXA_CAMERA_DATAWIDTH_10); |
| 939 | } |
| 940 | return false; |
| 941 | } |
| 942 | |
| 943 | static int required_buswidth(const struct soc_camera_data_format *fmt) |
| 944 | { |
| 945 | switch (fmt->fourcc) { |
| 946 | case V4L2_PIX_FMT_UYVY: |
| 947 | case V4L2_PIX_FMT_VYUY: |
| 948 | case V4L2_PIX_FMT_YUYV: |
| 949 | case V4L2_PIX_FMT_YVYU: |
| 950 | case V4L2_PIX_FMT_RGB565: |
| 951 | case V4L2_PIX_FMT_RGB555: |
| 952 | return 8; |
| 953 | default: |
| 954 | return fmt->depth; |
| 955 | } |
| 956 | } |
| 957 | |
| 958 | static int pxa_camera_get_formats(struct soc_camera_device *icd, int idx, |
| 959 | struct soc_camera_format_xlate *xlate) |
| 960 | { |
| 961 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
| 962 | int formats = 0, buswidth, ret; |
| 963 | |
| 964 | buswidth = required_buswidth(icd->formats + idx); |
| 965 | |
| 966 | if (!buswidth_supported(icd, buswidth)) |
| 967 | return 0; |
| 968 | |
| 969 | ret = pxa_camera_try_bus_param(icd, buswidth); |
| 970 | if (ret < 0) |
| 971 | return 0; |
| 972 | |
| 973 | switch (icd->formats[idx].fourcc) { |
| 974 | case V4L2_PIX_FMT_UYVY: |
| 975 | formats++; |
| 976 | if (xlate) { |
| 977 | xlate->host_fmt = &pxa_camera_formats[0]; |
| 978 | xlate->cam_fmt = icd->formats + idx; |
| 979 | xlate->buswidth = buswidth; |
| 980 | xlate++; |
| 981 | dev_dbg(&ici->dev, "Providing format %s using %s\n", |
| 982 | pxa_camera_formats[0].name, |
| 983 | icd->formats[idx].name); |
| 984 | } |
| 985 | case V4L2_PIX_FMT_VYUY: |
| 986 | case V4L2_PIX_FMT_YUYV: |
| 987 | case V4L2_PIX_FMT_YVYU: |
| 988 | case V4L2_PIX_FMT_RGB565: |
| 989 | case V4L2_PIX_FMT_RGB555: |
| 990 | formats++; |
| 991 | if (xlate) { |
| 992 | xlate->host_fmt = icd->formats + idx; |
| 993 | xlate->cam_fmt = icd->formats + idx; |
| 994 | xlate->buswidth = buswidth; |
| 995 | xlate++; |
| 996 | dev_dbg(&ici->dev, "Providing format %s packed\n", |
| 997 | icd->formats[idx].name); |
| 998 | } |
| 999 | break; |
| 1000 | default: |
| 1001 | /* Generic pass-through */ |
| 1002 | formats++; |
| 1003 | if (xlate) { |
| 1004 | xlate->host_fmt = icd->formats + idx; |
| 1005 | xlate->cam_fmt = icd->formats + idx; |
| 1006 | xlate->buswidth = icd->formats[idx].depth; |
| 1007 | xlate++; |
| 1008 | dev_dbg(&ici->dev, |
| 1009 | "Providing format %s in pass-through mode\n", |
| 1010 | icd->formats[idx].name); |
| 1011 | } |
| 1012 | } |
| 1013 | |
| 1014 | return formats; |
| 1015 | } |
| 1016 | |
Guennadi Liakhovetski | d8fac21 | 2008-12-01 09:45:21 -0300 | [diff] [blame] | 1017 | static int pxa_camera_set_fmt(struct soc_camera_device *icd, |
| 1018 | __u32 pixfmt, struct v4l2_rect *rect) |
Guennadi Liakhovetski | ad5f2e8 | 2008-03-07 21:57:18 -0300 | [diff] [blame] | 1019 | { |
Robert Jarzmik | 2a48fc7 | 2008-12-01 09:45:35 -0300 | [diff] [blame] | 1020 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
| 1021 | const struct soc_camera_data_format *host_fmt, *cam_fmt = NULL; |
| 1022 | const struct soc_camera_format_xlate *xlate; |
| 1023 | int ret, buswidth; |
Guennadi Liakhovetski | 25c4d74 | 2008-12-01 09:44:59 -0300 | [diff] [blame] | 1024 | |
Robert Jarzmik | 2a48fc7 | 2008-12-01 09:45:35 -0300 | [diff] [blame] | 1025 | xlate = soc_camera_xlate_by_fourcc(icd, pixfmt); |
| 1026 | if (!xlate) { |
| 1027 | dev_warn(&ici->dev, "Format %x not found\n", pixfmt); |
| 1028 | return -EINVAL; |
Guennadi Liakhovetski | 25c4d74 | 2008-12-01 09:44:59 -0300 | [diff] [blame] | 1029 | } |
| 1030 | |
Robert Jarzmik | 2a48fc7 | 2008-12-01 09:45:35 -0300 | [diff] [blame] | 1031 | buswidth = xlate->buswidth; |
| 1032 | host_fmt = xlate->host_fmt; |
| 1033 | cam_fmt = xlate->cam_fmt; |
| 1034 | |
| 1035 | switch (pixfmt) { |
| 1036 | case 0: /* Only geometry change */ |
| 1037 | ret = icd->ops->set_fmt(icd, pixfmt, rect); |
| 1038 | break; |
| 1039 | default: |
| 1040 | ret = icd->ops->set_fmt(icd, cam_fmt->fourcc, rect); |
| 1041 | } |
| 1042 | |
| 1043 | if (ret < 0) |
| 1044 | dev_warn(&ici->dev, "Failed to configure for format %x\n", |
| 1045 | pixfmt); |
| 1046 | |
| 1047 | if (pixfmt && !ret) { |
| 1048 | icd->buswidth = buswidth; |
| 1049 | icd->current_fmt = host_fmt; |
| 1050 | } |
Guennadi Liakhovetski | 25c4d74 | 2008-12-01 09:44:59 -0300 | [diff] [blame] | 1051 | |
| 1052 | return ret; |
Guennadi Liakhovetski | ad5f2e8 | 2008-03-07 21:57:18 -0300 | [diff] [blame] | 1053 | } |
| 1054 | |
Guennadi Liakhovetski | d8fac21 | 2008-12-01 09:45:21 -0300 | [diff] [blame] | 1055 | static int pxa_camera_try_fmt(struct soc_camera_device *icd, |
| 1056 | struct v4l2_format *f) |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 1057 | { |
Robert Jarzmik | 2a48fc7 | 2008-12-01 09:45:35 -0300 | [diff] [blame] | 1058 | struct soc_camera_host *ici = to_soc_camera_host(icd->dev.parent); |
| 1059 | const struct soc_camera_format_xlate *xlate; |
| 1060 | struct v4l2_pix_format *pix = &f->fmt.pix; |
| 1061 | __u32 pixfmt = pix->pixelformat; |
Guennadi Liakhovetski | a2c8c68 | 2008-12-01 09:44:53 -0300 | [diff] [blame] | 1062 | |
Robert Jarzmik | 2a48fc7 | 2008-12-01 09:45:35 -0300 | [diff] [blame] | 1063 | xlate = soc_camera_xlate_by_fourcc(icd, pixfmt); |
| 1064 | if (!xlate) { |
| 1065 | dev_warn(&ici->dev, "Format %x not found\n", pixfmt); |
Guennadi Liakhovetski | 25c4d74 | 2008-12-01 09:44:59 -0300 | [diff] [blame] | 1066 | return -EINVAL; |
Robert Jarzmik | 2a48fc7 | 2008-12-01 09:45:35 -0300 | [diff] [blame] | 1067 | } |
Guennadi Liakhovetski | 25c4d74 | 2008-12-01 09:44:59 -0300 | [diff] [blame] | 1068 | |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 1069 | /* limit to pxa hardware capabilities */ |
Robert Jarzmik | 2a48fc7 | 2008-12-01 09:45:35 -0300 | [diff] [blame] | 1070 | if (pix->height < 32) |
| 1071 | pix->height = 32; |
| 1072 | if (pix->height > 2048) |
| 1073 | pix->height = 2048; |
| 1074 | if (pix->width < 48) |
| 1075 | pix->width = 48; |
| 1076 | if (pix->width > 2048) |
| 1077 | pix->width = 2048; |
| 1078 | pix->width &= ~0x01; |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 1079 | |
Robert Jarzmik | 2a48fc7 | 2008-12-01 09:45:35 -0300 | [diff] [blame] | 1080 | pix->bytesperline = pix->width * |
| 1081 | DIV_ROUND_UP(xlate->host_fmt->depth, 8); |
| 1082 | pix->sizeimage = pix->height * pix->bytesperline; |
Guennadi Liakhovetski | 25c4d74 | 2008-12-01 09:44:59 -0300 | [diff] [blame] | 1083 | |
Guennadi Liakhovetski | ad5f2e8 | 2008-03-07 21:57:18 -0300 | [diff] [blame] | 1084 | /* limit to sensor capabilities */ |
Guennadi Liakhovetski | d8fac21 | 2008-12-01 09:45:21 -0300 | [diff] [blame] | 1085 | return icd->ops->try_fmt(icd, f); |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 1086 | } |
| 1087 | |
Guennadi Liakhovetski | 7102b77 | 2008-04-15 02:57:48 -0300 | [diff] [blame] | 1088 | static int pxa_camera_reqbufs(struct soc_camera_file *icf, |
| 1089 | struct v4l2_requestbuffers *p) |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 1090 | { |
| 1091 | int i; |
| 1092 | |
| 1093 | /* This is for locking debugging only. I removed spinlocks and now I |
| 1094 | * check whether .prepare is ever called on a linked buffer, or whether |
| 1095 | * a dma IRQ can occur for an in-work or unlinked buffer. Until now |
| 1096 | * it hadn't triggered */ |
| 1097 | for (i = 0; i < p->count; i++) { |
| 1098 | struct pxa_buffer *buf = container_of(icf->vb_vidq.bufs[i], |
| 1099 | struct pxa_buffer, vb); |
| 1100 | buf->inwork = 0; |
| 1101 | INIT_LIST_HEAD(&buf->vb.queue); |
| 1102 | } |
| 1103 | |
| 1104 | return 0; |
| 1105 | } |
| 1106 | |
Guennadi Liakhovetski | 7102b77 | 2008-04-15 02:57:48 -0300 | [diff] [blame] | 1107 | static unsigned int pxa_camera_poll(struct file *file, poll_table *pt) |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 1108 | { |
| 1109 | struct soc_camera_file *icf = file->private_data; |
| 1110 | struct pxa_buffer *buf; |
| 1111 | |
| 1112 | buf = list_entry(icf->vb_vidq.stream.next, struct pxa_buffer, |
| 1113 | vb.stream); |
| 1114 | |
| 1115 | poll_wait(file, &buf->vb.done, pt); |
| 1116 | |
| 1117 | if (buf->vb.state == VIDEOBUF_DONE || |
| 1118 | buf->vb.state == VIDEOBUF_ERROR) |
| 1119 | return POLLIN|POLLRDNORM; |
| 1120 | |
| 1121 | return 0; |
| 1122 | } |
| 1123 | |
Guennadi Liakhovetski | 7102b77 | 2008-04-15 02:57:48 -0300 | [diff] [blame] | 1124 | static int pxa_camera_querycap(struct soc_camera_host *ici, |
| 1125 | struct v4l2_capability *cap) |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 1126 | { |
| 1127 | /* cap->name is set by the firendly caller:-> */ |
| 1128 | strlcpy(cap->card, pxa_cam_driver_description, sizeof(cap->card)); |
| 1129 | cap->version = PXA_CAM_VERSION_CODE; |
| 1130 | cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING; |
| 1131 | |
| 1132 | return 0; |
| 1133 | } |
| 1134 | |
Robert Jarzmik | 3f6ac49 | 2008-08-02 07:10:04 -0300 | [diff] [blame] | 1135 | static int pxa_camera_suspend(struct soc_camera_device *icd, pm_message_t state) |
| 1136 | { |
| 1137 | struct soc_camera_host *ici = |
| 1138 | to_soc_camera_host(icd->dev.parent); |
| 1139 | struct pxa_camera_dev *pcdev = ici->priv; |
| 1140 | int i = 0, ret = 0; |
| 1141 | |
| 1142 | pcdev->save_cicr[i++] = CICR0; |
| 1143 | pcdev->save_cicr[i++] = CICR1; |
| 1144 | pcdev->save_cicr[i++] = CICR2; |
| 1145 | pcdev->save_cicr[i++] = CICR3; |
| 1146 | pcdev->save_cicr[i++] = CICR4; |
| 1147 | |
| 1148 | if ((pcdev->icd) && (pcdev->icd->ops->suspend)) |
| 1149 | ret = pcdev->icd->ops->suspend(pcdev->icd, state); |
| 1150 | |
| 1151 | return ret; |
| 1152 | } |
| 1153 | |
| 1154 | static int pxa_camera_resume(struct soc_camera_device *icd) |
| 1155 | { |
| 1156 | struct soc_camera_host *ici = |
| 1157 | to_soc_camera_host(icd->dev.parent); |
| 1158 | struct pxa_camera_dev *pcdev = ici->priv; |
| 1159 | int i = 0, ret = 0; |
| 1160 | |
Eric Miao | 87f3dd7 | 2008-09-08 15:26:43 +0800 | [diff] [blame] | 1161 | DRCMR(68) = pcdev->dma_chans[0] | DRCMR_MAPVLD; |
| 1162 | DRCMR(69) = pcdev->dma_chans[1] | DRCMR_MAPVLD; |
| 1163 | DRCMR(70) = pcdev->dma_chans[2] | DRCMR_MAPVLD; |
Robert Jarzmik | 3f6ac49 | 2008-08-02 07:10:04 -0300 | [diff] [blame] | 1164 | |
| 1165 | CICR0 = pcdev->save_cicr[i++] & ~CICR0_ENB; |
| 1166 | CICR1 = pcdev->save_cicr[i++]; |
| 1167 | CICR2 = pcdev->save_cicr[i++]; |
| 1168 | CICR3 = pcdev->save_cicr[i++]; |
| 1169 | CICR4 = pcdev->save_cicr[i++]; |
| 1170 | |
| 1171 | if ((pcdev->icd) && (pcdev->icd->ops->resume)) |
| 1172 | ret = pcdev->icd->ops->resume(pcdev->icd); |
| 1173 | |
| 1174 | /* Restart frame capture if active buffer exists */ |
| 1175 | if (!ret && pcdev->active) { |
| 1176 | /* Reset the FIFOs */ |
| 1177 | CIFR |= CIFR_RESET_F; |
| 1178 | /* Enable End-Of-Frame Interrupt */ |
| 1179 | CICR0 &= ~CICR0_EOFM; |
| 1180 | /* Restart the Capture Interface */ |
| 1181 | CICR0 |= CICR0_ENB; |
| 1182 | } |
| 1183 | |
| 1184 | return ret; |
| 1185 | } |
| 1186 | |
Guennadi Liakhovetski | b8d9904 | 2008-04-04 13:41:25 -0300 | [diff] [blame] | 1187 | static struct soc_camera_host_ops pxa_soc_camera_host_ops = { |
| 1188 | .owner = THIS_MODULE, |
| 1189 | .add = pxa_camera_add_device, |
| 1190 | .remove = pxa_camera_remove_device, |
Robert Jarzmik | 3f6ac49 | 2008-08-02 07:10:04 -0300 | [diff] [blame] | 1191 | .suspend = pxa_camera_suspend, |
| 1192 | .resume = pxa_camera_resume, |
Robert Jarzmik | 2a48fc7 | 2008-12-01 09:45:35 -0300 | [diff] [blame] | 1193 | .get_formats = pxa_camera_get_formats, |
Guennadi Liakhovetski | d8fac21 | 2008-12-01 09:45:21 -0300 | [diff] [blame] | 1194 | .set_fmt = pxa_camera_set_fmt, |
| 1195 | .try_fmt = pxa_camera_try_fmt, |
Paulius Zaleckas | 092d392 | 2008-07-11 20:50:31 -0300 | [diff] [blame] | 1196 | .init_videobuf = pxa_camera_init_videobuf, |
Guennadi Liakhovetski | b8d9904 | 2008-04-04 13:41:25 -0300 | [diff] [blame] | 1197 | .reqbufs = pxa_camera_reqbufs, |
| 1198 | .poll = pxa_camera_poll, |
| 1199 | .querycap = pxa_camera_querycap, |
Guennadi Liakhovetski | b8d9904 | 2008-04-04 13:41:25 -0300 | [diff] [blame] | 1200 | .set_bus_param = pxa_camera_set_bus_param, |
| 1201 | }; |
| 1202 | |
| 1203 | /* Should be allocated dynamically too, but we have only one. */ |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 1204 | static struct soc_camera_host pxa_soc_camera_host = { |
| 1205 | .drv_name = PXA_CAM_DRV_NAME, |
Guennadi Liakhovetski | b8d9904 | 2008-04-04 13:41:25 -0300 | [diff] [blame] | 1206 | .ops = &pxa_soc_camera_host_ops, |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 1207 | }; |
| 1208 | |
| 1209 | static int pxa_camera_probe(struct platform_device *pdev) |
| 1210 | { |
| 1211 | struct pxa_camera_dev *pcdev; |
| 1212 | struct resource *res; |
| 1213 | void __iomem *base; |
Guennadi Liakhovetski | 02da465 | 2008-06-13 09:03:45 -0300 | [diff] [blame] | 1214 | int irq; |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 1215 | int err = 0; |
| 1216 | |
| 1217 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| 1218 | irq = platform_get_irq(pdev, 0); |
Guennadi Liakhovetski | 02da465 | 2008-06-13 09:03:45 -0300 | [diff] [blame] | 1219 | if (!res || irq < 0) { |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 1220 | err = -ENODEV; |
| 1221 | goto exit; |
| 1222 | } |
| 1223 | |
| 1224 | pcdev = kzalloc(sizeof(*pcdev), GFP_KERNEL); |
| 1225 | if (!pcdev) { |
Guennadi Liakhovetski | 7102b77 | 2008-04-15 02:57:48 -0300 | [diff] [blame] | 1226 | dev_err(&pdev->dev, "Could not allocate pcdev\n"); |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 1227 | err = -ENOMEM; |
| 1228 | goto exit; |
| 1229 | } |
| 1230 | |
| 1231 | pcdev->clk = clk_get(&pdev->dev, "CAMCLK"); |
| 1232 | if (IS_ERR(pcdev->clk)) { |
| 1233 | err = PTR_ERR(pcdev->clk); |
| 1234 | goto exit_kfree; |
| 1235 | } |
| 1236 | |
| 1237 | dev_set_drvdata(&pdev->dev, pcdev); |
| 1238 | pcdev->res = res; |
| 1239 | |
| 1240 | pcdev->pdata = pdev->dev.platform_data; |
| 1241 | pcdev->platform_flags = pcdev->pdata->flags; |
Guennadi Liakhovetski | ad5f2e8 | 2008-03-07 21:57:18 -0300 | [diff] [blame] | 1242 | if (!(pcdev->platform_flags & (PXA_CAMERA_DATAWIDTH_8 | |
| 1243 | PXA_CAMERA_DATAWIDTH_9 | PXA_CAMERA_DATAWIDTH_10))) { |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 1244 | /* Platform hasn't set available data widths. This is bad. |
| 1245 | * Warn and use a default. */ |
| 1246 | dev_warn(&pdev->dev, "WARNING! Platform hasn't set available " |
| 1247 | "data widths, using default 10 bit\n"); |
| 1248 | pcdev->platform_flags |= PXA_CAMERA_DATAWIDTH_10; |
| 1249 | } |
| 1250 | pcdev->platform_mclk_10khz = pcdev->pdata->mclk_10khz; |
| 1251 | if (!pcdev->platform_mclk_10khz) { |
| 1252 | dev_warn(&pdev->dev, |
| 1253 | "mclk_10khz == 0! Please, fix your platform data. " |
| 1254 | "Using default 20MHz\n"); |
| 1255 | pcdev->platform_mclk_10khz = 2000; |
| 1256 | } |
| 1257 | |
| 1258 | INIT_LIST_HEAD(&pcdev->capture); |
| 1259 | spin_lock_init(&pcdev->lock); |
| 1260 | |
| 1261 | /* |
| 1262 | * Request the regions. |
| 1263 | */ |
| 1264 | if (!request_mem_region(res->start, res->end - res->start + 1, |
| 1265 | PXA_CAM_DRV_NAME)) { |
| 1266 | err = -EBUSY; |
| 1267 | goto exit_clk; |
| 1268 | } |
| 1269 | |
| 1270 | base = ioremap(res->start, res->end - res->start + 1); |
| 1271 | if (!base) { |
| 1272 | err = -ENOMEM; |
| 1273 | goto exit_release; |
| 1274 | } |
| 1275 | pcdev->irq = irq; |
| 1276 | pcdev->base = base; |
| 1277 | pcdev->dev = &pdev->dev; |
| 1278 | |
| 1279 | /* request dma */ |
roel kluin | de3e3b8 | 2008-09-18 17:50:15 -0300 | [diff] [blame] | 1280 | err = pxa_request_dma("CI_Y", DMA_PRIO_HIGH, |
| 1281 | pxa_camera_dma_irq_y, pcdev); |
| 1282 | if (err < 0) { |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 1283 | dev_err(pcdev->dev, "Can't request DMA for Y\n"); |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 1284 | goto exit_iounmap; |
| 1285 | } |
roel kluin | de3e3b8 | 2008-09-18 17:50:15 -0300 | [diff] [blame] | 1286 | pcdev->dma_chans[0] = err; |
Mike Rapoport | a5462e5 | 2008-04-22 10:36:32 -0300 | [diff] [blame] | 1287 | dev_dbg(pcdev->dev, "got DMA channel %d\n", pcdev->dma_chans[0]); |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 1288 | |
roel kluin | de3e3b8 | 2008-09-18 17:50:15 -0300 | [diff] [blame] | 1289 | err = pxa_request_dma("CI_U", DMA_PRIO_HIGH, |
| 1290 | pxa_camera_dma_irq_u, pcdev); |
| 1291 | if (err < 0) { |
Mike Rapoport | a5462e5 | 2008-04-22 10:36:32 -0300 | [diff] [blame] | 1292 | dev_err(pcdev->dev, "Can't request DMA for U\n"); |
Mike Rapoport | a5462e5 | 2008-04-22 10:36:32 -0300 | [diff] [blame] | 1293 | goto exit_free_dma_y; |
| 1294 | } |
roel kluin | de3e3b8 | 2008-09-18 17:50:15 -0300 | [diff] [blame] | 1295 | pcdev->dma_chans[1] = err; |
Mike Rapoport | a5462e5 | 2008-04-22 10:36:32 -0300 | [diff] [blame] | 1296 | dev_dbg(pcdev->dev, "got DMA channel (U) %d\n", pcdev->dma_chans[1]); |
| 1297 | |
roel kluin | de3e3b8 | 2008-09-18 17:50:15 -0300 | [diff] [blame] | 1298 | err = pxa_request_dma("CI_V", DMA_PRIO_HIGH, |
| 1299 | pxa_camera_dma_irq_v, pcdev); |
| 1300 | if (err < 0) { |
Mike Rapoport | a5462e5 | 2008-04-22 10:36:32 -0300 | [diff] [blame] | 1301 | dev_err(pcdev->dev, "Can't request DMA for V\n"); |
Mike Rapoport | a5462e5 | 2008-04-22 10:36:32 -0300 | [diff] [blame] | 1302 | goto exit_free_dma_u; |
| 1303 | } |
roel kluin | de3e3b8 | 2008-09-18 17:50:15 -0300 | [diff] [blame] | 1304 | pcdev->dma_chans[2] = err; |
Mike Rapoport | a5462e5 | 2008-04-22 10:36:32 -0300 | [diff] [blame] | 1305 | dev_dbg(pcdev->dev, "got DMA channel (V) %d\n", pcdev->dma_chans[2]); |
| 1306 | |
Eric Miao | 87f3dd7 | 2008-09-08 15:26:43 +0800 | [diff] [blame] | 1307 | DRCMR(68) = pcdev->dma_chans[0] | DRCMR_MAPVLD; |
| 1308 | DRCMR(69) = pcdev->dma_chans[1] | DRCMR_MAPVLD; |
| 1309 | DRCMR(70) = pcdev->dma_chans[2] | DRCMR_MAPVLD; |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 1310 | |
| 1311 | /* request irq */ |
| 1312 | err = request_irq(pcdev->irq, pxa_camera_irq, 0, PXA_CAM_DRV_NAME, |
| 1313 | pcdev); |
| 1314 | if (err) { |
| 1315 | dev_err(pcdev->dev, "Camera interrupt register failed \n"); |
| 1316 | goto exit_free_dma; |
| 1317 | } |
| 1318 | |
| 1319 | pxa_soc_camera_host.priv = pcdev; |
| 1320 | pxa_soc_camera_host.dev.parent = &pdev->dev; |
| 1321 | pxa_soc_camera_host.nr = pdev->id; |
Guennadi Liakhovetski | b8d9904 | 2008-04-04 13:41:25 -0300 | [diff] [blame] | 1322 | err = soc_camera_host_register(&pxa_soc_camera_host); |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 1323 | if (err) |
| 1324 | goto exit_free_irq; |
| 1325 | |
| 1326 | return 0; |
| 1327 | |
| 1328 | exit_free_irq: |
| 1329 | free_irq(pcdev->irq, pcdev); |
| 1330 | exit_free_dma: |
Mike Rapoport | a5462e5 | 2008-04-22 10:36:32 -0300 | [diff] [blame] | 1331 | pxa_free_dma(pcdev->dma_chans[2]); |
| 1332 | exit_free_dma_u: |
| 1333 | pxa_free_dma(pcdev->dma_chans[1]); |
| 1334 | exit_free_dma_y: |
| 1335 | pxa_free_dma(pcdev->dma_chans[0]); |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 1336 | exit_iounmap: |
| 1337 | iounmap(base); |
| 1338 | exit_release: |
| 1339 | release_mem_region(res->start, res->end - res->start + 1); |
| 1340 | exit_clk: |
| 1341 | clk_put(pcdev->clk); |
| 1342 | exit_kfree: |
| 1343 | kfree(pcdev); |
| 1344 | exit: |
| 1345 | return err; |
| 1346 | } |
| 1347 | |
| 1348 | static int __devexit pxa_camera_remove(struct platform_device *pdev) |
| 1349 | { |
| 1350 | struct pxa_camera_dev *pcdev = platform_get_drvdata(pdev); |
| 1351 | struct resource *res; |
| 1352 | |
| 1353 | clk_put(pcdev->clk); |
| 1354 | |
Mike Rapoport | a5462e5 | 2008-04-22 10:36:32 -0300 | [diff] [blame] | 1355 | pxa_free_dma(pcdev->dma_chans[0]); |
| 1356 | pxa_free_dma(pcdev->dma_chans[1]); |
| 1357 | pxa_free_dma(pcdev->dma_chans[2]); |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 1358 | free_irq(pcdev->irq, pcdev); |
| 1359 | |
| 1360 | soc_camera_host_unregister(&pxa_soc_camera_host); |
| 1361 | |
| 1362 | iounmap(pcdev->base); |
| 1363 | |
| 1364 | res = pcdev->res; |
| 1365 | release_mem_region(res->start, res->end - res->start + 1); |
| 1366 | |
| 1367 | kfree(pcdev); |
| 1368 | |
Guennadi Liakhovetski | 7102b77 | 2008-04-15 02:57:48 -0300 | [diff] [blame] | 1369 | dev_info(&pdev->dev, "PXA Camera driver unloaded\n"); |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 1370 | |
| 1371 | return 0; |
| 1372 | } |
| 1373 | |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 1374 | static struct platform_driver pxa_camera_driver = { |
| 1375 | .driver = { |
| 1376 | .name = PXA_CAM_DRV_NAME, |
| 1377 | }, |
| 1378 | .probe = pxa_camera_probe, |
| 1379 | .remove = __exit_p(pxa_camera_remove), |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 1380 | }; |
| 1381 | |
| 1382 | |
| 1383 | static int __devinit pxa_camera_init(void) |
| 1384 | { |
| 1385 | return platform_driver_register(&pxa_camera_driver); |
| 1386 | } |
| 1387 | |
| 1388 | static void __exit pxa_camera_exit(void) |
| 1389 | { |
Paul Mundt | 01c1e4c | 2008-08-01 19:48:51 -0300 | [diff] [blame] | 1390 | platform_driver_unregister(&pxa_camera_driver); |
Guennadi Liakhovetski | 3bc4384 | 2008-04-06 21:24:56 -0300 | [diff] [blame] | 1391 | } |
| 1392 | |
| 1393 | module_init(pxa_camera_init); |
| 1394 | module_exit(pxa_camera_exit); |
| 1395 | |
| 1396 | MODULE_DESCRIPTION("PXA27x SoC Camera Host driver"); |
| 1397 | MODULE_AUTHOR("Guennadi Liakhovetski <kernel@pengutronix.de>"); |
| 1398 | MODULE_LICENSE("GPL"); |