/* * drivers/media/video/omap24xxcam.h * * Copyright (C) 2004 MontaVista Software, Inc. * Copyright (C) 2004 Texas Instruments. * Copyright (C) 2007 Nokia Corporation. * * Contact: Sakari Ailus * * Based on code from Andy Lowe . * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * version 2 as published by the Free Software Foundation. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA * 02110-1301 USA */ #ifndef OMAP24XXCAM_H #define OMAP24XXCAM_H #include #include /* * * General driver related definitions. * */ #define CAM_NAME "omap24xxcam" #define CAM_MCLK 96000000 /* number of bytes transferred per DMA request */ #define DMA_THRESHOLD 32 /* * NUM_CAMDMA_CHANNELS is the number of logical channels provided by * the camera DMA controller. */ #define NUM_CAMDMA_CHANNELS 4 /* * NUM_SG_DMA is the number of scatter-gather DMA transfers that can * be queued. (We don't have any overlay sglists now.) */ #define NUM_SG_DMA (VIDEO_MAX_FRAME) /* * * Register definitions. * */ /* subsystem register block offsets */ #define CC_REG_OFFSET 0x00000400 #define CAMDMA_REG_OFFSET 0x00000800 #define CAMMMU_REG_OFFSET 0x00000C00 /* define camera subsystem register offsets */ #define CAM_REVISION 0x000 #define CAM_SYSCONFIG 0x010 #define CAM_SYSSTATUS 0x014 #define CAM_IRQSTATUS 0x018 #define CAM_GPO 0x040 #define CAM_GPI 0x050 /* define camera core register offsets */ #define CC_REVISION 0x000 #define CC_SYSCONFIG 0x010 #define CC_SYSSTATUS 0x014 #define CC_IRQSTATUS 0x018 #define CC_IRQENABLE 0x01C #define CC_CTRL 0x040 #define CC_CTRL_DMA 0x044 #define CC_CTRL_XCLK 0x048 #define CC_FIFODATA 0x04C #define CC_TEST 0x050 #define CC_GENPAR 0x054 #define CC_CCPFSCR 0x058 #define CC_CCPFECR 0x05C #define CC_CCPLSCR 0x060 #define CC_CCPLECR 0x064 #define CC_CCPDFR 0x068 /* define camera dma register offsets */ #define CAMDMA_REVISION 0x000 #define CAMDMA_IRQSTATUS_L0 0x008 #define CAMDMA_IRQSTATUS_L1 0x00C #define CAMDMA_IRQSTATUS_L2 0x010 #define CAMDMA_IRQSTATUS_L3 0x014 #define CAMDMA_IRQENABLE_L0 0x018 #define CAMDMA_IRQENABLE_L1 0x01C #define CAMDMA_IRQENABLE_L2 0x020 #define CAMDMA_IRQENABLE_L3 0x024 #define CAMDMA_SYSSTATUS 0x028 #define CAMDMA_OCP_SYSCONFIG 0x02C #define CAMDMA_CAPS_0 0x064 #define CAMDMA_CAPS_2 0x06C #define CAMDMA_CAPS_3 0x070 #define CAMDMA_CAPS_4 0x074 #define CAMDMA_GCR 0x078 #define CAMDMA_CCR(n) (0x080 + (n)*0x60) #define CAMDMA_CLNK_CTRL(n) (0x084 + (n)*0x60) #define CAMDMA_CICR(n) (0x088 + (n)*0x60) #define CAMDMA_CSR(n) (0x08C + (n)*0x60) #define CAMDMA_CSDP(n) (0x090 + (n)*0x60) #define CAMDMA_CEN(n) (0x094 + (n)*0x60) #define CAMDMA_CFN(n) (0x098 + (n)*0x60) #define CAMDMA_CSSA(n) (0x09C + (n)*0x60) #define CAMDMA_CDSA(n) (0x0A0 + (n)*0x60) #define CAMDMA_CSEI(n) (0x0A4 + (n)*0x60) #define CAMDMA_CSFI(n) (0x0A8 + (n)*0x60) #define CAMDMA_CDEI(n) (0x0AC + (n)*0x60) #define CAMDMA_CDFI(n) (0x0B0 + (n)*0x60) #define CAMDMA_CSAC(n) (0x0B4 + (n)*0x60) #define CAMDMA_CDAC(n) (0x0B8 + (n)*0x60) #define CAMDMA_CCEN(n) (0x0BC + (n)*0x60) #define CAMDMA_CCFN(n) (0x0C0 + (n)*0x60) #define CAMDMA_COLOR(n) (0x0C4 + (n)*0x60) /* define camera mmu register offsets */ #define CAMMMU_REVISION 0x000 #define CAMMMU_SYSCONFIG 0x010 #define CAMMMU_SYSSTATUS 0x014 #define CAMMMU_IRQSTATUS 0x018 #define CAMMMU_IRQENABLE 0x01C #define CAMMMU_WALKING_ST 0x040 #define CAMMMU_CNTL 0x044 #define CAMMMU_FAULT_AD 0x048 #define CAMMMU_TTB 0x04C #define CAMMMU_LOCK 0x050 #define CAMMMU_LD_TLB 0x054 #define CAMMMU_CAM 0x058 #define CAMMMU_RAM 0x05C #define CAMMMU_GFLUSH 0x060 #define CAMMMU_FLUSH_ENTRY 0x064 #define CAMMMU_READ_CAM 0x068 #define CAMMMU_READ_RAM 0x06C #define CAMMMU_EMU_FAULT_AD 0x070 /* Define bit fields within selected registers */ #define CAM_REVISION_MAJOR (15 << 4) #define CAM_REVISION_MAJOR_SHIFT 4 #define CAM_REVISION_MINOR (15 << 0) #define CAM_REVISION_MINOR_SHIFT 0 #define CAM_SYSCONFIG_SOFTRESET (1 << 1) #define CAM_SYSCONFIG_AUTOIDLE (1 << 0) #define CAM_SYSSTATUS_RESETDONE (1 << 0) #define CAM_IRQSTATUS_CC_IRQ (1 << 4) #define CAM_IRQSTATUS_MMU_IRQ (1 << 3) #define CAM_IRQSTATUS_DMA_IRQ2 (1 << 2) #define CAM_IRQSTATUS_DMA_IRQ1 (1 << 1) #define CAM_IRQSTATUS_DMA_IRQ0 (1 << 0) #define CAM_GPO_CAM_S_P_EN (1 << 1) #define CAM_GPO_CAM_CCP_MODE (1 << 0) #define CAM_GPI_CC_DMA_REQ1 (1 << 24) #define CAP_GPI_CC_DMA_REQ0 (1 << 23) #define CAP_GPI_CAM_MSTANDBY (1 << 21) #define CAP_GPI_CAM_WAIT (1 << 20) #define CAP_GPI_CAM_S_DATA (1 << 17) #define CAP_GPI_CAM_S_CLK (1 << 16) #define CAP_GPI_CAM_P_DATA (0xFFF << 3) #define CAP_GPI_CAM_P_DATA_SHIFT 3 #define CAP_GPI_CAM_P_VS (1 << 2) #define CAP_GPI_CAM_P_HS (1 << 1) #define CAP_GPI_CAM_P_CLK (1 << 0) #define CC_REVISION_MAJOR (15 << 4) #define CC_REVISION_MAJOR_SHIFT 4 #define CC_REVISION_MINOR (15 << 0) #define CC_REVISION_MINOR_SHIFT 0 #define CC_SYSCONFIG_SIDLEMODE (3 << 3) #define CC_SYSCONFIG_SIDLEMODE_FIDLE (0 << 3) #define CC_SYSCONFIG_SIDLEMODE_NIDLE (1 << 3) #define CC_SYSCONFIG_SOFTRESET (1 << 1) #define CC_SYSCONFIG_AUTOIDLE (1 << 0) #define CC_SYSSTATUS_RESETDONE (1 << 0) #define CC_IRQSTATUS_FS_IRQ (1 << 19) #define CC_IRQSTATUS_LE_IRQ (1 << 18) #define CC_IRQSTATUS_LS_IRQ (1 << 17) #define CC_IRQSTATUS_FE_IRQ (1 << 16) #define CC_IRQSTATUS_FW_ERR_IRQ (1 << 10) #define CC_IRQSTATUS_FSC_ERR_IRQ (1 << 9) #define CC_IRQSTATUS_SSC_ERR_IRQ (1 << 8) #define CC_IRQSTATUS_FIFO_NOEMPTY_IRQ (1 << 4) #define CC_IRQSTATUS_FIFO_FULL_IRQ (1 << 3) #define CC_IRQSTATUS_FIFO_THR_IRQ (1 << 2) #define CC_IRQSTATUS_FIFO_OF_IRQ (1 << 1) #define CC_IRQSTATUS_FIFO_UF_IRQ (1 << 0) #define CC_IRQENABLE_FS_IRQ (1 << 19) #define CC_IRQENABLE_LE_IRQ (1 << 18) #define CC_IRQENABLE_LS_IRQ (1 << 17) #define CC_IRQENABLE_FE_IRQ (1 << 16) #define CC_IRQENABLE_FW_ERR_IRQ (1 << 10) #define CC_IRQENABLE_FSC_ERR_IRQ (1 << 9) #define CC_IRQENABLE_SSC_ERR_IRQ (1 << 8) #define CC_IRQENABLE_FIFO_NOEMPTY_IRQ (1 << 4) #define CC_IRQENABLE_FIFO_FULL_IRQ (1 << 3) #define CC_IRQENABLE_FIFO_THR_IRQ (1 << 2) #define CC_IRQENABLE_FIFO_OF_IRQ (1 << 1) #define CC_IRQENABLE_FIFO_UF_IRQ (1 << 0) #define CC_CTRL_CC_ONE_SHOT (1 << 20) #define CC_CTRL_CC_IF_SYNCHRO (1 << 19) #define CC_CTRL_CC_RST (1 << 18) #define CC_CTRL_CC_FRAME_TRIG (1 << 17) #define CC_CTRL_CC_EN (1 << 16) #define CC_CTRL_NOBT_SYNCHRO (1 << 13) #define CC_CTRL_BT_CORRECT (1 << 12) #define CC_CTRL_PAR_ORDERCAM (1 << 11) #define CC_CTRL_PAR_CLK_POL (1 << 10) #define CC_CTRL_NOBT_HS_POL (1 << 9) #define CC_CTRL_NOBT_VS_POL (1 << 8) #define CC_CTRL_PAR_MODE (7 << 1) #define CC_CTRL_PAR_MODE_SHIFT 1 #define CC_CTRL_PAR_MODE_NOBT8 (0 << 1) #define CC_CTRL_PAR_MODE_NOBT10 (1 << 1) #define CC_CTRL_PAR_MODE_NOBT12 (2 << 1) #define CC_CTRL_PAR_MODE_BT8 (4 << 1) #define CC_CTRL_PAR_MODE_BT10 (5 << 1) #define CC_CTRL_PAR_MODE_FIFOTEST (7 << 1) #define CC_CTRL_CCP_MODE (1 << 0) #define CC_CTRL_DMA_EN (1 << 8) #define CC_CTRL_DMA_FIFO_THRESHOLD (0x7F << 0) #define CC_CTRL_DMA_FIFO_THRESHOLD_SHIFT 0 #define CC_CTRL_XCLK_DIV (0x1F << 0) #define CC_CTRL_XCLK_DIV_SHIFT 0 #define CC_CTRL_XCLK_DIV_STABLE_LOW (0 << 0) #define CC_CTRL_XCLK_DIV_STABLE_HIGH (1 << 0) #define CC_CTRL_XCLK_DIV_BYPASS (31 << 0) #define CC_TEST_FIFO_RD_POINTER (0xFF << 24) #define CC_TEST_FIFO_RD_POINTER_SHIFT 24 #define CC_TEST_FIFO_WR_POINTER (0xFF << 16) #define CC_TEST_FIFO_WR_POINTER_SHIFT 16 #define CC_TEST_FIFO_LEVEL (0xFF << 8) #define CC_TEST_FIFO_LEVEL_SHIFT 8 #define CC_TEST_FIFO_LEVEL_PEAK (0xFF << 0) #define CC_TEST_FIFO_LEVEL_PEAK_SHIFT 0 #define CC_GENPAR_FIFO_DEPTH (7 << 0) #define CC_GENPAR_FIFO_DEPTH_SHIFT 0 #define CC_CCPDFR_ALPHA (0xFF << 8) #define CC_CCPDFR_ALPHA_SHIFT 8 #define CC_CCPDFR_DATAFORMAT (15 << 0) #define CC_CCPDFR_DATAFORMAT_SHIFT 0 #define CC_CCPDFR_DATAFORMAT_YUV422BE (0 << 0) #define CC_CCPDFR_DATAFORMAT_YUV422 (1 << 0) #define CC_CCPDFR_DATAFORMAT_YUV420 (2 << 0) #define CC_CCPDFR_DATAFORMAT_RGB444 (4 << 0) #define CC_CCPDFR_DATAFORMAT_RGB565 (5 << 0) #define CC_CCPDFR_DATAFORMAT_RGB888NDE (6 << 0) #define CC_CCPDFR_DATAFORMAT_RGB888 (7 << 0) #define CC_CCPDFR_DATAFORMAT_RAW8NDE (8 << 0) #define CC_CCPDFR_DATAFORMAT_RAW8 (9 << 0) #define CC_CCPDFR_DATAFORMAT_RAW10NDE (10 << 0) #define CC_CCPDFR_DATAFORMAT_RAW10 (11 << 0) #define CC_CCPDFR_DATAFORMAT_RAW12NDE (12 << 0) #define CC_CCPDFR_DATAFORMAT_RAW12 (13 << 0) #define CC_CCPDFR_DATAFORMAT_JPEG8 (15 << 0) #define CAMDMA_REVISION_MAJOR (15 << 4) #define CAMDMA_REVISION_MAJOR_SHIFT 4 #define CAMDMA_REVISION_MINOR (15 << 0) #define CAMDMA_REVISION_MINOR_SHIFT 0 #define CAMDMA_OCP_SYSCONFIG_MIDLEMODE (3 << 12) #define CAMDMA_OCP_SYSCONFIG_MIDLEMODE_FSTANDBY (0 << 12) #define CAMDMA_OCP_SYSCONFIG_MIDLEMODE_NSTANDBY (1 << 12) #define CAMDMA_OCP_SYSCONFIG_MIDLEMODE_SSTANDBY (2 << 12) #define CAMDMA_OCP_SYSCONFIG_FUNC_CLOCK (1 << 9) #define CAMDMA_OCP_SYSCONFIG_OCP_CLOCK (1 << 8) #define CAMDMA_OCP_SYSCONFIG_EMUFREE (1 << 5) #define CAMDMA_OCP_SYSCONFIG_SIDLEMODE (3 << 3) #define CAMDMA_OCP_SYSCONFIG_SIDLEMODE_FIDLE (0 << 3) #define CAMDMA_OCP_SYSCONFIG_SIDLEMODE_NIDLE (1 << 3) #define CAMDMA_OCP_SYSCONFIG_SIDLEMODE_SIDLE (2 << 3) #define CAMDMA_OCP_SYSCONFIG_SOFTRESET (1 << 1) #define CAMDMA_OCP_SYSCONFIG_AUTOIDLE (1 << 0) #define CAMDMA_SYSSTATUS_RESETDONE (1 << 0) #define CAMDMA_GCR_ARBITRATION_RATE (0xFF << 16) #define CAMDMA_GCR_ARBITRATION_RATE_SHIFT 16 #define CAMDMA_GCR_MAX_CHANNEL_FIFO_DEPTH (0xFF << 0) #define CAMDMA_GCR_MAX_CHANNEL_FIFO_DEPTH_SHIFT 0 #define CAMDMA_CCR_SEL_SRC_DST_SYNC (1 << 24) #define CAMDMA_CCR_PREFETCH (1 << 23) #define CAMDMA_CCR_SUPERVISOR (1 << 22) #define CAMDMA_CCR_SECURE (1 << 21) #define CAMDMA_CCR_BS (1 << 18) #define CAMDMA_CCR_TRANSPARENT_COPY_ENABLE (1 << 17) #define CAMDMA_CCR_CONSTANT_FILL_ENABLE (1 << 16) #define CAMDMA_CCR_DST_AMODE (3 << 14) #define CAMDMA_CCR_DST_AMODE_CONST_ADDR (0 << 14) #define CAMDMA_CCR_DST_AMODE_POST_INC (1 << 14) #define CAMDMA_CCR_DST_AMODE_SGL_IDX (2 << 14) #define CAMDMA_CCR_DST_AMODE_DBL_IDX (3 << 14) #define CAMDMA_CCR_SRC_AMODE (3 << 12) #define CAMDMA_CCR_SRC_AMODE_CONST_ADDR (0 << 12) #define CAMDMA_CCR_SRC_AMODE_POST_INC (1 << 12) #define CAMDMA_CCR_SRC_AMODE_SGL_IDX (2 << 12) #define CAMDMA_CCR_SRC_AMODE_DBL_IDX (3 << 12) #define CAMDMA_CCR_WR_ACTIVE (1 << 10) #define CAMDMA_CCR_RD_ACTIVE (1 << 9) #define CAMDMA_CCR_SUSPEND_SENSITIVE (1 << 8) #define CAMDMA_CCR_ENABLE (1 << 7) #define CAMDMA_CCR_PRIO (1 << 6) #define CAMDMA_CCR_FS (1 << 5) #define CAMDMA_CCR_SYNCHRO ((3 << 19) | (31 << 0)) #define CAMDMA_CCR_SYNCHRO_CAMERA 0x01 #define CAMDMA_CLNK_CTRL_ENABLE_LNK (1 << 15) #define CAMDMA_CLNK_CTRL_NEXTLCH_ID (0x1F << 0) #define CAMDMA_CLNK_CTRL_NEXTLCH_ID_SHIFT 0 #define CAMDMA_CICR_MISALIGNED_ERR_IE (1 << 11) #define CAMDMA_CICR_SUPERVISOR_ERR_IE (1 << 10) #define CAMDMA_CICR_SECURE_ERR_IE (1 << 9) #define CAMDMA_CICR_TRANS_ERR_IE (1 << 8) #define CAMDMA_CICR_PACKET_IE (1 << 7) #define CAMDMA_CICR_BLOCK_IE (1 << 5) #define CAMDMA_CICR_LAST_IE (1 << 4) #define CAMDMA_CICR_FRAME_IE (1 << 3) #define CAMDMA_CICR_HALF_IE (1 << 2) #define CAMDMA_CICR_DROP_IE (1 << 1) #define CAMDMA_CSR_MISALIGNED_ERR (1 << 11) #define CAMDMA_CSR_SUPERVISOR_ERR (1 << 10) #define CAMDMA_CSR_SECURE_ERR (1 << 9) #define CAMDMA_CSR_TRANS_ERR (1 << 8) #define CAMDMA_CSR_PACKET (1 << 7) #define CAMDMA_CSR_SYNC (1 << 6) #define CAMDMA_CSR_BLOCK (1 << 5) #define CAMDMA_CSR_LAST (1 << 4) #define CAMDMA_CSR_FRAME (1 << 3) #define CAMDMA_CSR_HALF (1 << 2) #define CAMDMA_CSR_DROP (1 << 1) #define CAMDMA_CSDP_SRC_ENDIANNESS (1 << 21) #define CAMDMA_CSDP_SRC_ENDIANNESS_LOCK (1 << 20) #define CAMDMA_CSDP_DST_ENDIANNESS (1 << 19) #define CAMDMA_CSDP_DST_ENDIANNESS_LOCK (1 << 18) #define CAMDMA_CSDP_WRITE_MODE (3 << 16) #define CAMDMA_CSDP_WRITE_MODE_WRNP (0 << 16) #define CAMDMA_CSDP_WRITE_MODE_POSTED (1 << 16) #define CAMDMA_CSDP_WRITE_MODE_POSTED_LAST_WRNP (2 << 16) #define CAMDMA_CSDP_DST_BURST_EN (3 << 14) #define CAMDMA_CSDP_DST_BURST_EN_1 (0 << 14) #define CAMDMA_CSDP_DST_BURST_EN_16 (1 << 14) #define CAMDMA_CSDP_DST_BURST_EN_32 (2 << 14) #define CAMDMA_CSDP_DST_BURST_EN_64 (3 << 14) #define CAMDMA_CSDP_DST_PACKED (1 << 13) #define CAMDMA_CSDP_WR_ADD_TRSLT (15 << 9) #define CAMDMA_CSDP_WR_ADD_TRSLT_ENABLE_MREQADD (3 << 9) #define CAMDMA_CSDP_SRC_BURST_EN (3 << 7) #define CAMDMA_CSDP_SRC_BURST_EN_1 (0 << 7) #define CAMDMA_CSDP_SRC_BURST_EN_16 (1 << 7) #define CAMDMA_CSDP_SRC_BURST_EN_32 (2 << 7) #define CAMDMA_CSDP_SRC_BURST_EN_64 (3 << 7) #define CAMDMA_CSDP_SRC_PACKED (1 << 6) #define CAMDMA_CSDP_RD_ADD_TRSLT (15 << 2) #define CAMDMA_CSDP_RD_ADD_TRSLT_ENABLE_MREQADD (3 << 2) #define CAMDMA_CSDP_DATA_TYPE (3 << 0) #define CAMDMA_CSDP_DATA_TYPE_8BITS (0 << 0) #define CAMDMA_CSDP_DATA_TYPE_16BITS (1 << 0) #define CAMDMA_CSDP_DATA_TYPE_32BITS (2 << 0) #define CAMMMU_SYSCONFIG_AUTOIDLE (1 << 0) /* * * Declarations. * */ /* forward declarations */ struct omap24xxcam_sgdma; struct omap24xxcam_dma; typedef void (*sgdma_callback_t)(struct omap24xxcam_sgdma *cam, u32 status, void *arg); typedef void (*dma_callback_t)(struct omap24xxcam_dma *cam, u32 status, void *arg); struct channel_state { dma_callback_t callback; void *arg; }; /* sgdma state for each of the possible videobuf_buffers + 2 overlays */ struct sgdma_state { const struct scatterlist *sglist; int sglen; /* number of sglist entries */ int next_sglist; /* index of next sglist entry to process */ unsigned int bytes_read; /* number of bytes read */ unsigned int len; /* total length of sglist (excluding * bytes due to page alignment) */ int queued_sglist; /* number of sglist entries queued for DMA */ u32 csr; /* DMA return code */ sgdma_callback_t callback; void *arg; }; /* physical DMA channel management */ struct omap24xxcam_dma { spinlock_t lock; /* Lock for the whole structure. */ unsigned long base; /* base address for dma controller */ /* While dma_stop!=0, an attempt to start a new DMA transfer will * fail. */ atomic_t dma_stop; int free_dmach; /* number of dma channels free */ int next_dmach; /* index of next dma channel to use */ struct channel_state ch_state[NUM_CAMDMA_CHANNELS]; }; /* scatter-gather DMA (scatterlist stuff) management */ struct omap24xxcam_sgdma { struct omap24xxcam_dma dma; spinlock_t lock; /* Lock for the fields below. */ int free_sgdma; /* number of free sg dma slots */ int next_sgdma; /* index of next sg dma slot to use */ struct sgdma_state sg_state[NUM_SG_DMA]; /* Reset timer data */ struct timer_list reset_timer; }; /* per-device data structure */ struct omap24xxcam_device { /*** mutex ***/ /* * mutex serialises access to this structure. Also camera * opening and releasing is synchronised by this. */ struct mutex mutex; /*** general driver state information ***/ atomic_t users; /* * Lock to serialise core enabling and disabling and access to * sgdma_in_queue. */ spinlock_t core_enable_disable_lock; /* * Number or sgdma requests in scatter-gather queue, protected * by the lock above. */ int sgdma_in_queue; /* * Sensor interface parameters: interface type, CC_CTRL * register value and interface specific data. */ int if_type; union { struct parallel { u32 xclk; } bt656; } if_u; u32 cc_ctrl; /*** subsystem structures ***/ struct omap24xxcam_sgdma sgdma; /*** hardware resources ***/ unsigned int irq; unsigned long mmio_base; unsigned long mmio_base_phys; unsigned long mmio_size; /*** interfaces and device ***/ struct v4l2_int_device *sdev; struct device *dev; struct video_device *vfd; /*** camera and sensor reset related stuff ***/ struct work_struct sensor_reset_work; /* * We're in the middle of a reset. Don't enable core if this * is non-zero! This exists to help decisionmaking in a case * where videobuf_qbuf is called while we are in the middle of * a reset. */ atomic_t in_reset; /* * Non-zero if we don't want any resets for now. Used to * prevent reset work to run when we're about to stop * streaming. */ atomic_t reset_disable; /*** video device parameters ***/ int capture_mem; /*** camera module clocks ***/ struct clk *fck; struct clk *ick; /*** capture data ***/ /* file handle, if streaming is on */ struct file *streaming; }; /* Per-file handle data. */ struct omap24xxcam_fh { spinlock_t vbq_lock; /* spinlock for the videobuf queue */ struct videobuf_queue vbq; struct v4l2_pix_format pix; /* serialise pix by vbq->lock */ atomic_t field_count; /* field counter for videobuf_buffer */ /* accessing cam here doesn't need serialisation: it's constant */ struct omap24xxcam_device *cam; }; /* * * Register I/O functions. * */ static inline u32 omap24xxcam_reg_in(unsigned long base, u32 offset) { return readl(base + offset); } static inline u32 omap24xxcam_reg_out(unsigned long base, u32 offset, u32 val) { writel(val, base + offset); return val; } static inline u32 omap24xxcam_reg_merge(unsigned long base, u32 offset, u32 val, u32 mask) { u32 addr = base + offset; u32 new_val = (readl(addr) & ~mask) | (val & mask); writel(new_val, addr); return new_val; } /* * * Function prototypes. * */ /* dma prototypes */ void omap24xxcam_dma_hwinit(struct omap24xxcam_dma *dma); void omap24xxcam_dma_isr(struct omap24xxcam_dma *dma); /* sgdma prototypes */ void omap24xxcam_sgdma_process(struct omap24xxcam_sgdma *sgdma); int omap24xxcam_sgdma_queue(struct omap24xxcam_sgdma *sgdma, const struct scatterlist *sglist, int sglen, int len, sgdma_callback_t callback, void *arg); void omap24xxcam_sgdma_sync(struct omap24xxcam_sgdma *sgdma); void omap24xxcam_sgdma_init(struct omap24xxcam_sgdma *sgdma, unsigned long base, void (*reset_callback)(unsigned long data), unsigned long reset_callback_data); void omap24xxcam_sgdma_exit(struct omap24xxcam_sgdma *sgdma); #endif