diff options
Diffstat (limited to 'drivers/media/platform')
| -rw-r--r-- | drivers/media/platform/Kconfig | 7 | ||||
| -rw-r--r-- | drivers/media/platform/Makefile | 3 | ||||
| -rw-r--r-- | drivers/media/platform/omap24xxcam-dma.c | 601 | ||||
| -rw-r--r-- | drivers/media/platform/omap24xxcam.c | 1888 | ||||
| -rw-r--r-- | drivers/media/platform/omap24xxcam.h | 596 |
5 files changed, 0 insertions, 3095 deletions
diff --git a/drivers/media/platform/Kconfig b/drivers/media/platform/Kconfig index 7f6ea65..b2a4403 100644 --- a/drivers/media/platform/Kconfig +++ b/drivers/media/platform/Kconfig @@ -91,13 +91,6 @@ config VIDEO_M32R_AR_M64278 To compile this driver as a module, choose M here: the module will be called arv. -config VIDEO_OMAP2 - tristate "OMAP2 Camera Capture Interface driver" - depends on VIDEO_DEV && ARCH_OMAP2 && VIDEO_V4L2_INT_DEVICE - select VIDEOBUF_DMA_SG - ---help--- - This is a v4l2 driver for the TI OMAP2 camera capture interface - config VIDEO_OMAP3 tristate "OMAP 3 Camera support" depends on OMAP_IOVMM && VIDEO_V4L2 && I2C && VIDEO_V4L2_SUBDEV_API && ARCH_OMAP3 diff --git a/drivers/media/platform/Makefile b/drivers/media/platform/Makefile index 1348ba1..e5269da 100644 --- a/drivers/media/platform/Makefile +++ b/drivers/media/platform/Makefile @@ -2,8 +2,6 @@ # Makefile for the video capture/playback device drivers. # -omap2cam-objs := omap24xxcam.o omap24xxcam-dma.o - obj-$(CONFIG_VIDEO_VINO) += indycam.o obj-$(CONFIG_VIDEO_VINO) += vino.o @@ -14,7 +12,6 @@ obj-$(CONFIG_VIDEO_VIA_CAMERA) += via-camera.o obj-$(CONFIG_VIDEO_CAFE_CCIC) += marvell-ccic/ obj-$(CONFIG_VIDEO_MMP_CAMERA) += marvell-ccic/ -obj-$(CONFIG_VIDEO_OMAP2) += omap2cam.o obj-$(CONFIG_VIDEO_OMAP3) += omap3isp/ obj-$(CONFIG_VIDEO_VIU) += fsl-viu.o diff --git a/drivers/media/platform/omap24xxcam-dma.c b/drivers/media/platform/omap24xxcam-dma.c deleted file mode 100644 index 9c00776..0000000 --- a/drivers/media/platform/omap24xxcam-dma.c +++ /dev/null @@ -1,601 +0,0 @@ -/* - * drivers/media/platform/omap24xxcam-dma.c - * - * Copyright (C) 2004 MontaVista Software, Inc. - * Copyright (C) 2004 Texas Instruments. - * Copyright (C) 2007 Nokia Corporation. - * - * Contact: Sakari Ailus <sakari.ailus@nokia.com> - * - * Based on code from Andy Lowe <source@mvista.com> and - * David Cohen <david.cohen@indt.org.br>. - * - * 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 - */ - -#include <linux/kernel.h> -#include <linux/io.h> -#include <linux/scatterlist.h> - -#include "omap24xxcam.h" - -/* - * - * DMA hardware. - * - */ - -/* Ack all interrupt on CSR and IRQSTATUS_L0 */ -static void omap24xxcam_dmahw_ack_all(void __iomem *base) -{ - u32 csr; - int i; - - for (i = 0; i < NUM_CAMDMA_CHANNELS; ++i) { - csr = omap24xxcam_reg_in(base, CAMDMA_CSR(i)); - /* ack interrupt in CSR */ - omap24xxcam_reg_out(base, CAMDMA_CSR(i), csr); - } - omap24xxcam_reg_out(base, CAMDMA_IRQSTATUS_L0, 0xf); -} - -/* Ack dmach on CSR and IRQSTATUS_L0 */ -static u32 omap24xxcam_dmahw_ack_ch(void __iomem *base, int dmach) -{ - u32 csr; - - csr = omap24xxcam_reg_in(base, CAMDMA_CSR(dmach)); - /* ack interrupt in CSR */ - omap24xxcam_reg_out(base, CAMDMA_CSR(dmach), csr); - /* ack interrupt in IRQSTATUS */ - omap24xxcam_reg_out(base, CAMDMA_IRQSTATUS_L0, (1 << dmach)); - - return csr; -} - -static int omap24xxcam_dmahw_running(void __iomem *base, int dmach) -{ - return omap24xxcam_reg_in(base, CAMDMA_CCR(dmach)) & CAMDMA_CCR_ENABLE; -} - -static void omap24xxcam_dmahw_transfer_setup(void __iomem *base, int dmach, - dma_addr_t start, u32 len) -{ - omap24xxcam_reg_out(base, CAMDMA_CCR(dmach), - CAMDMA_CCR_SEL_SRC_DST_SYNC - | CAMDMA_CCR_BS - | CAMDMA_CCR_DST_AMODE_POST_INC - | CAMDMA_CCR_SRC_AMODE_POST_INC - | CAMDMA_CCR_FS - | CAMDMA_CCR_WR_ACTIVE - | CAMDMA_CCR_RD_ACTIVE - | CAMDMA_CCR_SYNCHRO_CAMERA); - omap24xxcam_reg_out(base, CAMDMA_CLNK_CTRL(dmach), 0); - omap24xxcam_reg_out(base, CAMDMA_CEN(dmach), len); - omap24xxcam_reg_out(base, CAMDMA_CFN(dmach), 1); - omap24xxcam_reg_out(base, CAMDMA_CSDP(dmach), - CAMDMA_CSDP_WRITE_MODE_POSTED - | CAMDMA_CSDP_DST_BURST_EN_32 - | CAMDMA_CSDP_DST_PACKED - | CAMDMA_CSDP_SRC_BURST_EN_32 - | CAMDMA_CSDP_SRC_PACKED - | CAMDMA_CSDP_DATA_TYPE_8BITS); - omap24xxcam_reg_out(base, CAMDMA_CSSA(dmach), 0); - omap24xxcam_reg_out(base, CAMDMA_CDSA(dmach), start); - omap24xxcam_reg_out(base, CAMDMA_CSEI(dmach), 0); - omap24xxcam_reg_out(base, CAMDMA_CSFI(dmach), DMA_THRESHOLD); - omap24xxcam_reg_out(base, CAMDMA_CDEI(dmach), 0); - omap24xxcam_reg_out(base, CAMDMA_CDFI(dmach), 0); - omap24xxcam_reg_out(base, CAMDMA_CSR(dmach), - CAMDMA_CSR_MISALIGNED_ERR - | CAMDMA_CSR_SECURE_ERR - | CAMDMA_CSR_TRANS_ERR - | CAMDMA_CSR_BLOCK - | CAMDMA_CSR_DROP); - omap24xxcam_reg_out(base, CAMDMA_CICR(dmach), - CAMDMA_CICR_MISALIGNED_ERR_IE - | CAMDMA_CICR_SECURE_ERR_IE - | CAMDMA_CICR_TRANS_ERR_IE - | CAMDMA_CICR_BLOCK_IE - | CAMDMA_CICR_DROP_IE); -} - -static void omap24xxcam_dmahw_transfer_start(void __iomem *base, int dmach) -{ - omap24xxcam_reg_out(base, CAMDMA_CCR(dmach), - CAMDMA_CCR_SEL_SRC_DST_SYNC - | CAMDMA_CCR_BS - | CAMDMA_CCR_DST_AMODE_POST_INC - | CAMDMA_CCR_SRC_AMODE_POST_INC - | CAMDMA_CCR_ENABLE - | CAMDMA_CCR_FS - | CAMDMA_CCR_SYNCHRO_CAMERA); -} - -static void omap24xxcam_dmahw_transfer_chain(void __iomem *base, int dmach, - int free_dmach) -{ - int prev_dmach, ch; - - if (dmach == 0) - prev_dmach = NUM_CAMDMA_CHANNELS - 1; - else - prev_dmach = dmach - 1; - omap24xxcam_reg_out(base, CAMDMA_CLNK_CTRL(prev_dmach), - CAMDMA_CLNK_CTRL_ENABLE_LNK | dmach); - /* Did we chain the DMA transfer before the previous one - * finished? - */ - ch = (dmach + free_dmach) % NUM_CAMDMA_CHANNELS; - while (!(omap24xxcam_reg_in(base, CAMDMA_CCR(ch)) - & CAMDMA_CCR_ENABLE)) { - if (ch == dmach) { - /* The previous transfer has ended and this one - * hasn't started, so we must not have chained - * to the previous one in time. We'll have to - * start it now. - */ - omap24xxcam_dmahw_transfer_start(base, dmach); - break; - } else - ch = (ch + 1) % NUM_CAMDMA_CHANNELS; - } -} - -/* Abort all chained DMA transfers. After all transfers have been - * aborted and the DMA controller is idle, the completion routines for - * any aborted transfers will be called in sequence. The DMA - * controller may not be idle after this routine completes, because - * the completion routines might start new transfers. - */ -static void omap24xxcam_dmahw_abort_ch(void __iomem *base, int dmach) -{ - /* mask all interrupts from this channel */ - omap24xxcam_reg_out(base, CAMDMA_CICR(dmach), 0); - /* unlink this channel */ - omap24xxcam_reg_merge(base, CAMDMA_CLNK_CTRL(dmach), 0, - CAMDMA_CLNK_CTRL_ENABLE_LNK); - /* disable this channel */ - omap24xxcam_reg_merge(base, CAMDMA_CCR(dmach), 0, CAMDMA_CCR_ENABLE); -} - -static void omap24xxcam_dmahw_init(void __iomem *base) -{ - omap24xxcam_reg_out(base, CAMDMA_OCP_SYSCONFIG, - CAMDMA_OCP_SYSCONFIG_MIDLEMODE_FSTANDBY - | CAMDMA_OCP_SYSCONFIG_SIDLEMODE_FIDLE - | CAMDMA_OCP_SYSCONFIG_AUTOIDLE); - - omap24xxcam_reg_merge(base, CAMDMA_GCR, 0x10, - CAMDMA_GCR_MAX_CHANNEL_FIFO_DEPTH); - - omap24xxcam_reg_out(base, CAMDMA_IRQENABLE_L0, 0xf); -} - -/* - * - * Individual DMA channel handling. - * - */ - -/* Start a DMA transfer from the camera to memory. - * Returns zero if the transfer was successfully started, or non-zero if all - * DMA channels are already in use or starting is currently inhibited. - */ -static int omap24xxcam_dma_start(struct omap24xxcam_dma *dma, dma_addr_t start, - u32 len, dma_callback_t callback, void *arg) -{ - unsigned long flags; - int dmach; - - spin_lock_irqsave(&dma->lock, flags); - - if (!dma->free_dmach || atomic_read(&dma->dma_stop)) { - spin_unlock_irqrestore(&dma->lock, flags); - return -EBUSY; - } - - dmach = dma->next_dmach; - - dma->ch_state[dmach].callback = callback; - dma->ch_state[dmach].arg = arg; - - omap24xxcam_dmahw_transfer_setup(dma->base, dmach, start, len); - - /* We're ready to start the DMA transfer. */ - - if (dma->free_dmach < NUM_CAMDMA_CHANNELS) { - /* A transfer is already in progress, so try to chain to it. */ - omap24xxcam_dmahw_transfer_chain(dma->base, dmach, - dma->free_dmach); - } else { - /* No transfer is in progress, so we'll just start this one - * now. - */ - omap24xxcam_dmahw_transfer_start(dma->base, dmach); - } - - dma->next_dmach = (dma->next_dmach + 1) % NUM_CAMDMA_CHANNELS; - dma->free_dmach--; - - spin_unlock_irqrestore(&dma->lock, flags); - - return 0; -} - -/* Abort all chained DMA transfers. After all transfers have been - * aborted and the DMA controller is idle, the completion routines for - * any aborted transfers will be called in sequence. The DMA - * controller may not be idle after this routine completes, because - * the completion routines might start new transfers. - */ -static void omap24xxcam_dma_abort(struct omap24xxcam_dma *dma, u32 csr) -{ - unsigned long flags; - int dmach, i, free_dmach; - dma_callback_t callback; - void *arg; - - spin_lock_irqsave(&dma->lock, flags); - - /* stop any DMA transfers in progress */ - dmach = (dma->next_dmach + dma->free_dmach) % NUM_CAMDMA_CHANNELS; - for (i = 0; i < NUM_CAMDMA_CHANNELS; i++) { - omap24xxcam_dmahw_abort_ch(dma->base, dmach); - dmach = (dmach + 1) % NUM_CAMDMA_CHANNELS; - } - - /* We have to be careful here because the callback routine - * might start a new DMA transfer, and we only want to abort - * transfers that were started before this routine was called. - */ - free_dmach = dma->free_dmach; - while ((dma->free_dmach < NUM_CAMDMA_CHANNELS) && - (free_dmach < NUM_CAMDMA_CHANNELS)) { - dmach = (dma->next_dmach + dma->free_dmach) - % NUM_CAMDMA_CHANNELS; - callback = dma->ch_state[dmach].callback; - arg = dma->ch_state[dmach].arg; - dma->free_dmach++; - free_dmach++; - if (callback) { - /* leave interrupts disabled during callback */ - spin_unlock(&dma->lock); - (*callback) (dma, csr, arg); - spin_lock(&dma->lock); - } - } - - spin_unlock_irqrestore(&dma->lock, flags); -} - -/* Abort all chained DMA transfers. After all transfers have been - * aborted and the DMA controller is idle, the completion routines for - * any aborted transfers will be called in sequence. If the completion - * routines attempt to start a new DMA transfer it will fail, so the - * DMA controller will be idle after this routine completes. - */ -static void omap24xxcam_dma_stop(struct omap24xxcam_dma *dma, u32 csr) -{ - atomic_inc(&dma->dma_stop); - omap24xxcam_dma_abort(dma, csr); - atomic_dec(&dma->dma_stop); -} - -/* Camera DMA interrupt service routine. */ -void omap24xxcam_dma_isr(struct omap24xxcam_dma *dma) -{ - int dmach; - dma_callback_t callback; - void *arg; - u32 csr; - const u32 csr_error = CAMDMA_CSR_MISALIGNED_ERR - | CAMDMA_CSR_SUPERVISOR_ERR | CAMDMA_CSR_SECURE_ERR - | CAMDMA_CSR_TRANS_ERR | CAMDMA_CSR_DROP; - - spin_lock(&dma->lock); - - if (dma->free_dmach == NUM_CAMDMA_CHANNELS) { - /* A camera DMA interrupt occurred while all channels - * are idle, so we'll acknowledge the interrupt in the - * IRQSTATUS register and exit. - */ - omap24xxcam_dmahw_ack_all(dma->base); - spin_unlock(&dma->lock); - return; - } - - while (dma->free_dmach < NUM_CAMDMA_CHANNELS) { - dmach = (dma->next_dmach + dma->free_dmach) - % NUM_CAMDMA_CHANNELS; - if (omap24xxcam_dmahw_running(dma->base, dmach)) { - /* This buffer hasn't finished yet, so we're done. */ - break; - } - csr = omap24xxcam_dmahw_ack_ch(dma->base, dmach); - if (csr & csr_error) { - /* A DMA error occurred, so stop all DMA - * transfers in progress. - */ - spin_unlock(&dma->lock); - omap24xxcam_dma_stop(dma, csr); - return; - } else { - callback = dma->ch_state[dmach].callback; - arg = dma->ch_state[dmach].arg; - dma->free_dmach++; - if (callback) { - spin_unlock(&dma->lock); - (*callback) (dma, csr, arg); - spin_lock(&dma->lock); - } - } - } - - spin_unlock(&dma->lock); - - omap24xxcam_sgdma_process( - container_of(dma, struct omap24xxcam_sgdma, dma)); -} - -void omap24xxcam_dma_hwinit(struct omap24xxcam_dma *dma) -{ - unsigned long flags; - - spin_lock_irqsave(&dma->lock, flags); - - omap24xxcam_dmahw_init(dma->base); - - spin_unlock_irqrestore(&dma->lock, flags); -} - -static void omap24xxcam_dma_init(struct omap24xxcam_dma *dma, - void __iomem *base) -{ - int ch; - - /* group all channels on DMA IRQ0 and unmask irq */ - spin_lock_init(&dma->lock); - dma->base = base; - dma->free_dmach = NUM_CAMDMA_CHANNELS; - dma->next_dmach = 0; - for (ch = 0; ch < NUM_CAMDMA_CHANNELS; ch++) { - dma->ch_state[ch].callback = NULL; - dma->ch_state[ch].arg = NULL; - } -} - -/* - * - * Scatter-gather DMA. - * - * High-level DMA construct for transferring whole picture frames to - * memory that is discontinuous. - * - */ - -/* DMA completion routine for the scatter-gather DMA fragments. */ -static void omap24xxcam_sgdma_callback(struct omap24xxcam_dma *dma, u32 csr, - void *arg) -{ - struct omap24xxcam_sgdma *sgdma = - container_of(dma, struct omap24xxcam_sgdma, dma); - int sgslot = (int)arg; - struct sgdma_state *sg_state; - const u32 csr_error = CAMDMA_CSR_MISALIGNED_ERR - | CAMDMA_CSR_SUPERVISOR_ERR | CAMDMA_CSR_SECURE_ERR - | CAMDMA_CSR_TRANS_ERR | CAMDMA_CSR_DROP; - - spin_lock(&sgdma->lock); - - /* We got an interrupt, we can remove the timer */ - del_timer(&sgdma->reset_timer); - - sg_state = sgdma->sg_state + sgslot; - if (!sg_state->queued_sglist) { - spin_unlock(&sgdma->lock); - printk(KERN_ERR "%s: sgdma completed when none queued!\n", - __func__); - return; - } - - sg_state->csr |= csr; - if (!--sg_state->queued_sglist) { - /* Queue for this sglist is empty, so check to see if we're - * done. - */ - if ((sg_state->next_sglist == sg_state->sglen) - || (sg_state->csr & csr_error)) { - sgdma_callback_t callback = sg_state->callback; - void *arg = sg_state->arg; - u32 sg_csr = sg_state->csr; - /* All done with this sglist */ - sgdma->free_sgdma++; - if (callback) { - spin_unlock(&sgdma->lock); - (*callback) (sgdma, sg_csr, arg); - return; - } - } - } - - spin_unlock(&sgdma->lock); -} - -/* Start queued scatter-gather DMA transfers. */ -void omap24xxcam_sgdma_process(struct omap24xxcam_sgdma *sgdma) -{ - unsigned long flags; - int queued_sgdma, sgslot; - struct sgdma_state *sg_state; - const u32 csr_error = CAMDMA_CSR_MISALIGNED_ERR - | CAMDMA_CSR_SUPERVISOR_ERR | CAMDMA_CSR_SECURE_ERR - | CAMDMA_CSR_TRANS_ERR | CAMDMA_CSR_DROP; - - spin_lock_irqsave(&sgdma->lock, flags); - - queued_sgdma = NUM_SG_DMA - sgdma->free_sgdma; - sgslot = (sgdma->next_sgdma + sgdma->free_sgdma) % NUM_SG_DMA; - while (queued_sgdma > 0) { - sg_state = sgdma->sg_state + sgslot; - while ((sg_state->next_sglist < sg_state->sglen) && - !(sg_state->csr & csr_error)) { - const struct scatterlist *sglist; - unsigned int len; - - sglist = sg_state->sglist + sg_state->next_sglist; - /* try to start the next DMA transfer */ - if (sg_state->next_sglist + 1 == sg_state->sglen) { - /* - * On the last sg, we handle the case where - * cam->img.pix.sizeimage % PAGE_ALIGN != 0 - */ - len = sg_state->len - sg_state->bytes_read; - } else { - len = sg_dma_len(sglist); - } - - if (omap24xxcam_dma_start(&sgdma->dma, - sg_dma_address(sglist), - len, - omap24xxcam_sgdma_callback, - (void *)sgslot)) { - /* DMA start failed */ - spin_unlock_irqrestore(&sgdma->lock, flags); - return; - } else { - unsigned long expires; - /* DMA start was successful */ - sg_state->next_sglist++; - sg_state->bytes_read += len; - sg_state->queued_sglist++; - - /* We start the reset timer */ - expires = jiffies + HZ; - mod_timer(&sgdma->reset_timer, expires); - } - } - queued_sgdma--; - sgslot = (sgslot + 1) % NUM_SG_DMA; - } - - spin_unlock_irqrestore(&sgdma->lock, flags); -} - -/* - * Queue a scatter-gather DMA transfer from the camera to memory. - * Returns zero if the transfer was successfully queued, or non-zero - * if all of the scatter-gather slots are already in use. - */ -int omap24xxcam_sgdma_queue(struct omap24xxcam_sgdma *sgdma, - const struct scatterlist *sglist, int sglen, - int len, sgdma_callback_t callback, void *arg) -{ - unsigned long flags; - struct sgdma_state *sg_state; - - if ((sglen < 0) || ((sglen > 0) && !sglist)) - return -EINVAL; - - spin_lock_irqsave(&sgdma->lock, flags); - - if (!sgdma->free_sgdma) { - spin_unlock_irqrestore(&sgdma->lock, flags); - return -EBUSY; - } - - sg_state = sgdma->sg_state + sgdma->next_sgdma; - - sg_state->sglist = sglist; - sg_state->sglen = sglen; - sg_state->next_sglist = 0; - sg_state->bytes_read = 0; - sg_state->len = len; - sg_state->queued_sglist = 0; - sg_state->csr = 0; - sg_state->callback = callback; - sg_state->arg = arg; - - sgdma->next_sgdma = (sgdma->next_sgdma + 1) % NUM_SG_DMA; - sgdma->free_sgdma--; - - spin_unlock_irqrestore(&sgdma->lock, flags); - - omap24xxcam_sgdma_process(sgdma); - - return 0; -} - -/* Sync scatter-gather DMA by aborting any DMA transfers currently in progress. - * Any queued scatter-gather DMA transactions that have not yet been started - * will remain queued. The DMA controller will be idle after this routine - * completes. When the scatter-gather queue is restarted, the next - * scatter-gather DMA transfer will begin at the start of a new transaction. - */ -void omap24xxcam_sgdma_sync(struct omap24xxcam_sgdma *sgdma) -{ - unsigned long flags; - int sgslot; - struct sgdma_state *sg_state; - u32 csr = CAMDMA_CSR_TRANS_ERR; - - /* stop any DMA transfers in progress */ - omap24xxcam_dma_stop(&sgdma->dma, csr); - - spin_lock_irqsave(&sgdma->lock, flags); - - if (sgdma->free_sgdma < NUM_SG_DMA) { - sgslot = (sgdma->next_sgdma + sgdma->free_sgdma) % NUM_SG_DMA; - sg_state = sgdma->sg_state + sgslot; - if (sg_state->next_sglist != 0) { - /* This DMA transfer was in progress, so abort it. */ - sgdma_callback_t callback = sg_state->callback; - void *arg = sg_state->arg; - sgdma->free_sgdma++; - if (callback) { - /* leave interrupts masked */ - spin_unlock(&sgdma->lock); - (*callback) (sgdma, csr, arg); - spin_lock(&sgdma->lock); - } - } - } - - spin_unlock_irqrestore(&sgdma->lock, flags); -} - -void omap24xxcam_sgdma_init(struct omap24xxcam_sgdma *sgdma, - void __iomem *base, - void (*reset_callback)(unsigned long data), - unsigned long reset_callback_data) -{ - int sg; - - spin_lock_init(&sgdma->lock); - sgdma->free_sgdma = NUM_SG_DMA; - sgdma->next_sgdma = 0; - for (sg = 0; sg < NUM_SG_DMA; sg++) { - sgdma->sg_state[sg].sglen = 0; - sgdma->sg_state[sg].next_sglist = 0; - sgdma->sg_state[sg].bytes_read = 0; - sgdma->sg_state[sg].queued_sglist = 0; - sgdma->sg_state[sg].csr = 0; - sgdma->sg_state[sg].callback = NULL; - sgdma->sg_state[sg].arg = NULL; - } - - omap24xxcam_dma_init(&sgdma->dma, base); - setup_timer(&sgdma->reset_timer, reset_callback, reset_callback_data); -} diff --git a/drivers/media/platform/omap24xxcam.c b/drivers/media/platform/omap24xxcam.c deleted file mode 100644 index d2b440c..0000000 --- a/drivers/media/platform/omap24xxcam.c +++ /dev/null @@ -1,1888 +0,0 @@ -/* - * drivers/media/platform/omap24xxcam.c - * - * OMAP 2 camera block driver. - * - * Copyright (C) 2004 MontaVista Software, Inc. - * Copyright (C) 2004 Texas Instruments. - * Copyright (C) 2007-2008 Nokia Corporation. - * - * Contact: Sakari Ailus <sakari.ailus@nokia.com> - * - * Based on code from Andy Lowe <source@mvista.com> - * - * 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 - */ - -#include <linux/delay.h> -#include <linux/kernel.h> -#include <linux/interrupt.h> -#include <linux/videodev2.h> -#include <linux/pci.h> /* needed for videobufs */ -#include <linux/platform_device.h> -#include <linux/clk.h> -#include <linux/io.h> -#include <linux/slab.h> -#include <linux/sched.h> -#include <linux/module.h> - -#include <media/v4l2-common.h> -#include <media/v4l2-ioctl.h> - -#include "omap24xxcam.h" - -#define OMAP24XXCAM_VERSION "0.0.1" - -#define RESET_TIMEOUT_NS 10000 - -static void omap24xxcam_reset(struct omap24xxcam_device *cam); -static int omap24xxcam_sensor_if_enable(struct omap24xxcam_device *cam); -static void omap24xxcam_device_unregister(struct v4l2_int_device *s); -static int omap24xxcam_remove(struct platform_device *pdev); - -/* module parameters */ -static int video_nr = -1; /* video device minor (-1 ==> auto assign) */ -/* - * Maximum amount of memory to use for capture buffers. - * Default is 4800KB, enough to double-buffer SXGA. - */ -static int capture_mem = 1280 * 960 * 2 * 2; - -static struct v4l2_int_device omap24xxcam; - -/* - * - * Clocks. - * - */ - -static void omap24xxcam_clock_put(struct omap24xxcam_device *cam) -{ - if (cam->ick != NULL && !IS_ERR(cam->ick)) - clk_put(cam->ick); - if (cam->fck != NULL && !IS_ERR(cam->fck)) - clk_put(cam->fck); - - cam->ick = cam->fck = NULL; -} - -static int omap24xxcam_clock_get(struct omap24xxcam_device *cam) -{ - int rval = 0; - - cam->fck = clk_get(cam->dev, "fck"); - if (IS_ERR(cam->fck)) { - dev_err(cam->dev, "can't get camera fck"); - rval = PTR_ERR(cam->fck); - omap24xxcam_clock_put(cam); - return rval; - } - - cam->ick = clk_get(cam->dev, "ick"); - if (IS_ERR(cam->ick)) { - dev_err(cam->dev, "can't get camera ick"); - rval = PTR_ERR(cam->ick); - omap24xxcam_clock_put(cam); - } - - return rval; -} - -static void omap24xxcam_clock_on(struct omap24xxcam_device *cam) -{ - clk_enable(cam->fck); - clk_enable(cam->ick); -} - -static void omap24xxcam_clock_off(struct omap24xxcam_device *cam) -{ - clk_disable(cam->fck); - clk_disable(cam->ick); -} - -/* - * - * Camera core - * - */ - -/* - * Set xclk. - * - * To disable xclk, use value zero. - */ -static void omap24xxcam_core_xclk_set(const struct omap24xxcam_device *cam, - u32 xclk) -{ - if (xclk) { - u32 divisor = CAM_MCLK / xclk; - - if (divisor == 1) - omap24xxcam_reg_out(cam->mmio_base + CC_REG_OFFSET, - CC_CTRL_XCLK, - CC_CTRL_XCLK_DIV_BYPASS); - else - omap24xxcam_reg_out(cam->mmio_base + CC_REG_OFFSET, - CC_CTRL_XCLK, divisor); - } else - omap24xxcam_reg_out(cam->mmio_base + CC_REG_OFFSET, - CC_CTRL_XCLK, CC_CTRL_XCLK_DIV_STABLE_LOW); -} - -static void omap24xxcam_core_hwinit(const struct omap24xxcam_device *cam) -{ - /* - * Setting the camera core AUTOIDLE bit causes problems with frame - * synchronization, so we will clear the AUTOIDLE bit instead. - */ - omap24xxcam_reg_out(cam->mmio_base + CC_REG_OFFSET, CC_SYSCONFIG, - CC_SYSCONFIG_AUTOIDLE); - - /* program the camera interface DMA packet size */ - omap24xxcam_reg_out(cam->mmio_base + CC_REG_OFFSET, CC_CTRL_DMA, - CC_CTRL_DMA_EN | (DMA_THRESHOLD / 4 - 1)); - - /* enable camera core error interrupts */ - omap24xxcam_reg_out(cam->mmio_base + CC_REG_OFFSET, CC_IRQENABLE, - CC_IRQENABLE_FW_ERR_IRQ - | CC_IRQENABLE_FSC_ERR_IRQ - | CC_IRQENABLE_SSC_ERR_IRQ - | CC_IRQENABLE_FIFO_OF_IRQ); -} - -/* - * Enable the camera core. - * - * Data transfer to the camera DMA starts from next starting frame. - */ -static void omap24xxcam_core_enable(const struct omap24xxcam_device *cam) -{ - - omap24xxcam_reg_out(cam->mmio_base + CC_REG_OFFSET, CC_CTRL, - cam->cc_ctrl); -} - -/* - * Disable camera core. - * - * The data transfer will be stopped immediately (CC_CTRL_CC_RST). The - * core internal state machines will be reset. Use - * CC_CTRL_CC_FRAME_TRIG instead if you want to transfer the current - * frame completely. - */ -static void omap24xxcam_core_disable(const struct omap24xxcam_device *cam) -{ - omap24xxcam_reg_out(cam->mmio_base + CC_REG_OFFSET, CC_CTRL, - CC_CTRL_CC_RST); -} - -/* Interrupt service routine for camera core interrupts. */ -static void omap24xxcam_core_isr(struct omap24xxcam_device *cam) -{ - u32 cc_irqstatus; - const u32 cc_irqstatus_err = - CC_IRQSTATUS_FW_ERR_IRQ - | CC_IRQSTATUS_FSC_ERR_IRQ - | CC_IRQSTATUS_SSC_ERR_IRQ - | CC_IRQSTATUS_FIFO_UF_IRQ - | CC_IRQSTATUS_FIFO_OF_IRQ; - - cc_irqstatus = omap24xxcam_reg_in(cam->mmio_base + CC_REG_OFFSET, - CC_IRQSTATUS); - omap24xxcam_reg_out(cam->mmio_base + CC_REG_OFFSET, CC_IRQSTATUS, - cc_irqstatus); - - if (cc_irqstatus & cc_irqstatus_err - && !atomic_read(&cam->in_reset)) { - dev_dbg(cam->dev, "resetting camera, cc_irqstatus 0x%x\n", - cc_irqstatus); - omap24xxcam_reset(cam); - } -} - -/* - * - * videobuf_buffer handling. - * - * Memory for mmapped videobuf_buffers is not allocated - * conventionally, but by several kmalloc allocations and then - * creating the scatterlist on our own. User-space buffers are handled - * normally. - * - */ - -/* - * Free the memory-mapped buffer memory allocated for a - * videobuf_buffer and the associated scatterlist. - */ -static void omap24xxcam_vbq_free_mmap_buffer(struct videobuf_buffer *vb) -{ - struct videobuf_dmabuf *dma = videobuf_to_dma(vb); - size_t alloc_size; - struct page *page; - int i; - - if (dma->sglist == NULL) - return; - - i = dma->sglen; - while (i) { - i--; - alloc_size = sg_dma_len(&dma->sglist[i]); - page = sg_page(&dma->sglist[i]); - do { - ClearPageReserved(page++); - } while (alloc_size -= PAGE_SIZE); - __free_pages(sg_page(&dma->sglist[i]), - get_order(sg_dma_len(&dma->sglist[i]))); - } - - kfree(dma->sglist); - dma->sglist = NULL; -} - -/* Release all memory related to the videobuf_queue. */ -static void omap24xxcam_vbq_free_mmap_buffers(struct videobuf_queue *vbq) -{ - int i; - - mutex_lock(&vbq->vb_lock); - - for (i = 0; i < VIDEO_MAX_FRAME; i++) { - if (NULL == vbq->bufs[i]) - continue; - if (V4L2_MEMORY_MMAP != vbq->bufs[i]->memory) - continue; - vbq->ops->buf_release(vbq, vbq->bufs[i]); - omap24xxcam_vbq_free_mmap_buffer(vbq->bufs[i]); - kfree(vbq->bufs[i]); - vbq->bufs[i] = NULL; - } - - mutex_unlock(&vbq->vb_lock); - - videobuf_mmap_free(vbq); -} - -/* - * Allocate physically as contiguous as possible buffer for video - * frame and allocate and build DMA scatter-gather list for it. - */ -static int omap24xxcam_vbq_alloc_mmap_buffer(struct videobuf_buffer *vb) -{ - unsigned int order; - size_t alloc_size, size = vb->bsize; /* vb->bsize is page aligned */ - struct page *page; - int max_pages, err = 0, i = 0; - struct videobuf_dmabuf *dma = videobuf_to_dma(vb); - - /* - * allocate maximum size scatter-gather list. Note this is - * overhead. We may not use as many entries as we allocate - */ - max_pages = vb->bsize >> PAGE_SHIFT; - dma->sglist = kcalloc(max_pages, sizeof(*dma->sglist), GFP_KERNEL); - if (dma->sglist == NULL) { - err = -ENOMEM; - goto out; - } - - while (size) { - order = get_order(size); - /* - * do not over-allocate even if we would get larger - * contiguous chunk that way - */ - if ((PAGE_SIZE << order) > size) - order--; - - /* try to allocate as many contiguous pages as possible */ - page = alloc_pages(GFP_KERNEL, order); - /* if allocation fails, try to allocate smaller amount */ - while (page == NULL) { - order--; - page = alloc_pages(GFP_KERNEL, order); - if (page == NULL && !order) { - err = -ENOMEM; - goto out; - } - } - size -= (PAGE_SIZE << order); - - /* append allocated chunk of pages into scatter-gather list */ - sg_set_page(&dma->sglist[i], page, PAGE_SIZE << order, 0); - dma->sglen++; - i++; - - alloc_size = (PAGE_SIZE << order); - - /* clear pages before giving them to user space */ - memset(page_address(page), 0, alloc_size); - - /* mark allocated pages reserved */ - do { - SetPageReserved(page++); - } while (alloc_size -= PAGE_SIZE); - } - /* - * REVISIT: not fully correct to assign nr_pages == sglen but - * video-buf is passing nr_pages for e.g. unmap_sg calls - */ - dma->nr_pages = dma->sglen; - dma->direction = PCI_DMA_FROMDEVICE; - - return 0; - -out: - omap24xxcam_vbq_free_mmap_buffer(vb); - return err; -} - -static int omap24xxcam_vbq_alloc_mmap_buffers(struct videobuf_queue *vbq, - unsigned int count) -{ - int i, err = 0; - struct omap24xxcam_fh *fh = - container_of(vbq, struct omap24xxcam_fh, vbq); - - mutex_lock(&vbq->vb_lock); - - for (i = 0; i < count; i++) { - err = omap24xxcam_vbq_alloc_mmap_buffer(vbq->bufs[i]); - if (err) - goto out; - dev_dbg(fh->cam->dev, "sglen is %d for buffer %d\n", - videobuf_to_dma(vbq->bufs[i])->sglen, i); - } - - mutex_unlock(&vbq->vb_lock); - - return 0; -out: - while (i) { - i--; - omap24xxcam_vbq_free_mmap_buffer(vbq->bufs[i]); - } - - mutex_unlock(&vbq->vb_lock); - - return err; -} - -/* - * This routine is called from interrupt context when a scatter-gather DMA - * transfer of a videobuf_buffer completes. - */ -static void omap24xxcam_vbq_complete(struct omap24xxcam_sgdma *sgdma, - u32 csr, void *arg) -{ - struct omap24xxcam_device *cam = - container_of(sgdma, struct omap24xxcam_device, sgdma); - struct omap24xxcam_fh *fh = cam->streaming->private_data; - struct videobuf_buffer *vb = (struct videobuf_buffer *)arg; - const u32 csr_error = CAMDMA_CSR_MISALIGNED_ERR - | CAMDMA_CSR_SUPERVISOR_ERR | CAMDMA_CSR_SECURE_ERR - | CAMDMA_CSR_TRANS_ERR | CAMDMA_CSR_DROP; - unsigned long flags; - - spin_lock_irqsave(&cam->core_enable_disable_lock, flags); - if (--cam->sgdma_in_queue == 0) - omap24xxcam_core_disable(cam); - spin_unlock_irqrestore(&cam->core_enable_disable_lock, flags); - - v4l2_get_timestamp(&vb->ts); - vb->field_count = atomic_add_return(2, &fh->field_count); - if (csr & csr_error) { - vb->state = VIDEOBUF_ERROR; - if (!atomic_read(&fh->cam->in_reset)) { - dev_dbg(cam->dev, "resetting camera, csr 0x%x\n", csr); - omap24xxcam_reset(cam); - } - } else - vb->state = VIDEOBUF_DONE; - wake_up(&vb->done); -} - -static void omap24xxcam_vbq_release(struct videobuf_queue *vbq, - struct videobuf_buffer *vb) -{ - struct videobuf_dmabuf *dma = videobuf_to_dma(vb); - - /* wait for buffer, especially to get out of the sgdma queue */ - videobuf_waiton(vbq, vb, 0, 0); - if (vb->memory == V4L2_MEMORY_MMAP) { - dma_unmap_sg(vbq->dev, dma->sglist, dma->sglen, - dma->direction); - dma->direction = DMA_NONE; - } else { - videobuf_dma_unmap(vbq->dev, videobuf_to_dma(vb)); - videobuf_dma_free(videobuf_to_dma(vb)); - } - - vb->state = VIDEOBUF_NEEDS_INIT; -} - -/* - * Limit the number of available kernel image capture buffers based on the - * number requested, the currently selected image size, and the maximum - * amount of memory permitted for kernel capture buffers. - */ -static int omap24xxcam_vbq_setup(struct videobuf_queue *vbq, unsigned int *cnt, - unsigned int *size) -{ - struct omap24xxcam_fh *fh = vbq->priv_data; - - if (*cnt <= 0) - *cnt = VIDEO_MAX_FRAME; /* supply a default number of buffers */ - - if (*cnt > VIDEO_MAX_FRAME) - *cnt = VIDEO_MAX_FRAME; - - *size = fh->pix.sizeimage; - - /* accessing fh->cam->capture_mem is ok, it's constant */ - if (*size * *cnt > fh->cam->capture_mem) - *cnt = fh->cam->capture_mem / *size; - - return 0; -} - -static int omap24xxcam_dma_iolock(struct videobuf_queue *vbq, - struct videobuf_dmabuf *dma) -{ - int err = 0; - - dma->direction = PCI_DMA_FROMDEVICE; - if (!dma_map_sg(vbq->dev, dma->sglist, dma->sglen, dma->direction)) { - kfree(dma->sglist); - dma->sglist = NULL; - dma->sglen = 0; - err = -EIO; - } - - return err; -} - -static int omap24xxcam_vbq_prepare(struct videobuf_queue *vbq, - struct videobuf_buffer *vb, - enum v4l2_field field) -{ - struct omap24xxcam_fh *fh = vbq->priv_data; - int err = 0; - - /* - * Accessing pix here is okay since it's constant while - * streaming is on (and we only get called then). - */ - if (vb->baddr) { - /* This is a userspace buffer. */ - if (fh->pix.sizeimage > vb->bsize) { - /* The buffer isn't big enough. */ - err = -EINVAL; - } else - vb->size = fh->pix.sizeimage; - } else { - if (vb->state != VIDEOBUF_NEEDS_INIT) { - /* - * We have a kernel bounce buffer that has - * already been allocated. - */ - if (fh->pix.sizeimage > vb->size) { - /* - * The image size has been changed to - * a larger size since this buffer was - * allocated, so we need to free and - * reallocate it. - */ - omap24xxcam_vbq_release(vbq, vb); - vb->size = fh->pix.sizeimage; - } - } else { - /* We need to allocate a new kernel bounce buffer. */ - vb->size = fh->pix.sizeimage; - } - } - - if (err) - return err; - - vb->width = fh->pix.width; - vb->height = fh->pix.height; - vb->field = field; - - if (vb->state == VIDEOBUF_NEEDS_INIT) { - if (vb->memory == V4L2_MEMORY_MMAP) - /* - * we have built the scatter-gather list by ourself so - * do the scatter-gather mapping as well - */ - err = omap24xxcam_dma_iolock(vbq, videobuf_to_dma(vb)); - else - err = videobuf_iolock(vbq, vb, NULL); - } - - if (!err) - vb->state = VIDEOBUF_PREPARED; - else - omap24xxcam_vbq_release(vbq, vb); - - return err; -} - -static void omap24xxcam_vbq_queue(struct videobuf_queue *vbq, - struct videobuf_buffer *vb) -{ - struct omap24xxcam_fh *fh = vbq->priv_data; - struct omap24xxcam_device *cam = fh->cam; - enum videobuf_state state = vb->state; - unsigned long flags; - int err; - - /* - * FIXME: We're marking the buffer active since we have no - * pretty way of marking it active exactly when the - * scatter-gather transfer starts. - */ - vb->state = VIDEOBUF_ACTIVE; - - err = omap24xxcam_sgdma_queue(&fh->cam->sgdma, - videobuf_to_dma(vb)->sglist, - videobuf_to_dma(vb)->sglen, vb->size, - omap24xxcam_vbq_complete, vb); - - if (!err) { - spin_lock_irqsave(&cam->core_enable_disable_lock, flags); - if (++cam->sgdma_in_queue == 1 - && !atomic_read(&cam->in_reset)) - omap24xxcam_core_enable(cam); - spin_unlock_irqrestore(&cam->core_enable_disable_lock, flags); - } else { - /* - * Oops. We're not supposed to get any errors here. - * The only way we could get an error is if we ran out - * of scatter-gather DMA slots, but we are supposed to - * have at least as many scatter-gather DMA slots as - * video buffers so that can't happen. - */ - dev_err(cam->dev, "failed to queue a video buffer for dma!\n"); - dev_err(cam->dev, "likely a bug in the driver!\n"); - vb->state = state; - } -} - -static struct videobuf_queue_ops omap24xxcam_vbq_ops = { - .buf_setup = omap24xxcam_vbq_setup, - .buf_prepare = omap24xxcam_vbq_prepare, - .buf_queue = omap24xxcam_vbq_queue, - .buf_release = omap24xxcam_vbq_release, -}; - -/* - * - * OMAP main camera system - * - */ - -/* - * Reset camera block to power-on state. - */ -static void omap24xxcam_poweron_reset(struct omap24xxcam_device *cam) -{ - int max_loop = RESET_TIMEOUT_NS; - - /* Reset whole camera subsystem */ - omap24xxcam_reg_out(cam->mmio_base, - CAM_SYSCONFIG, - CAM_SYSCONFIG_SOFTRESET); - - /* Wait till it's finished */ - while (!(omap24xxcam_reg_in(cam->mmio_base, CAM_SYSSTATUS) - & CAM_SYSSTATUS_RESETDONE) - && --max_loop) { - ndelay(1); - } - - if (!(omap24xxcam_reg_in(cam->mmio_base, CAM_SYSSTATUS) - & CAM_SYSSTATUS_RESETDONE)) - dev_err(cam->dev, "camera soft reset timeout\n"); -} - -/* - * (Re)initialise the camera block. - */ -static void omap24xxcam_hwinit(struct omap24xxcam_device *cam) -{ - omap24xxcam_poweron_reset(cam); - - /* set the camera subsystem autoidle bit */ - omap24xxcam_reg_out(cam->mmio_base, CAM_SYSCONFIG, - CAM_SYSCONFIG_AUTOIDLE); - - /* set the camera MMU autoidle bit */ - omap24xxcam_reg_out(cam->mmio_base, - CAMMMU_REG_OFFSET + CAMMMU_SYSCONFIG, - CAMMMU_SYSCONFIG_AUTOIDLE); - - omap24xxcam_core_hwinit(cam); - - omap24xxcam_dma_hwinit(&cam->sgdma.dma); -} - -/* - * Callback for dma transfer stalling. - */ -static void omap24xxcam_stalled_dma_reset(unsigned long data) -{ - struct omap24xxcam_device *cam = (struct omap24xxcam_device *)data; - - if (!atomic_read(&cam->in_reset)) { - dev_dbg(cam->dev, "dma stalled, resetting camera\n"); - omap24xxcam_reset(cam); - } -} - -/* - * Stop capture. Mark we're doing a reset, stop DMA transfers and - * core. (No new scatter-gather transfers will be queued whilst - * in_reset is non-zero.) - * - * If omap24xxcam_capture_stop is called from several places at - * once, only the first call will have an effect. Similarly, the last - * call omap24xxcam_streaming_cont will have effect. - * - * Serialisation is ensured by using cam->core_enable_disable_lock. - */ -static void omap24xxcam_capture_stop(struct omap24xxcam_device *cam) -{ - unsigned long flags; - - spin_lock_irqsave(&cam->core_enable_disable_lock, flags); - - if (atomic_inc_return(&cam->in_reset) != 1) { - spin_unlock_irqrestore(&cam->core_enable_disable_lock, flags); - return; - } - - omap24xxcam_core_disable(cam); - - spin_unlock_irqrestore(&cam->core_enable_disable_lock, flags); - - omap24xxcam_sgdma_sync(&cam->sgdma); -} - -/* - * Reset and continue streaming. - * - * Note: Resetting the camera FIFO via the CC_RST bit in the CC_CTRL - * register is supposed to be sufficient to recover from a camera - * interface error, but it doesn't seem to be enough. If we only do - * that then subsequent image captures are out of sync by either one - * or two times DMA_THRESHOLD bytes. Resetting and re-initializing the - * entire camera subsystem prevents the problem with frame - * synchronization. - */ -static void omap24xxcam_capture_cont(struct omap24xxcam_device *cam) -{ - unsigned long flags; - - spin_lock_irqsave(&cam->core_enable_disable_lock, flags); - - if (atomic_read(&cam->in_reset) != 1) - goto out; - - omap24xxcam_hwinit(cam); - - omap24xxcam_sensor_if_enable(cam); - - omap24xxcam_sgdma_process(&cam->sgdma); - - if (cam->sgdma_in_queue) - omap24xxcam_core_enable(cam); - -out: - atomic_dec(&cam->in_reset); - spin_unlock_irqrestore(&cam->core_enable_disable_lock, flags); -} - -static ssize_t -omap24xxcam_streaming_show(struct device *dev, struct device_attribute *attr, - char *buf) -{ - struct omap24xxcam_device *cam = dev_get_drvdata(dev); - - return sprintf(buf, "%s\n", cam->streaming ? "active" : "inactive"); -} -static DEVICE_ATTR(streaming, S_IRUGO, omap24xxcam_streaming_show, NULL); - -/* - * Stop capture and restart it. I.e. reset the camera during use. - */ -static void omap24xxcam_reset(struct omap24xxcam_device *cam) -{ - omap24xxcam_capture_stop(cam); - omap24xxcam_capture_cont(cam); -} - -/* - * The main interrupt handler. - */ -static irqreturn_t omap24xxcam_isr(int irq, void *arg) -{ - struct omap24xxcam_device *cam = (struct omap24xxcam_device *)arg; - u32 irqstatus; - unsigned int irqhandled = 0; - - irqstatus = omap24xxcam_reg_in(cam->mmio_base, CAM_IRQSTATUS); - - if (irqstatus & - (CAM_IRQSTATUS_DMA_IRQ2 | CAM_IRQSTATUS_DMA_IRQ1 - | CAM_IRQSTATUS_DMA_IRQ0)) { - omap24xxcam_dma_isr(&cam->sgdma.dma); - irqhandled = 1; - } - if (irqstatus & CAM_IRQSTATUS_CC_IRQ) { - omap24xxcam_core_isr(cam); - irqhandled = 1; - } - if (irqstatus & CAM_IRQSTATUS_MMU_IRQ) - dev_err(cam->dev, "unhandled camera MMU interrupt!\n"); - - return IRQ_RETVAL(irqhandled); -} - -/* - * - * Sensor handling. - * - */ - -/* - * Enable the external sensor interface. Try to negotiate interface - * parameters with the sensor and start using the new ones. The calls - * to sensor_if_enable and sensor_if_disable need not to be balanced. - */ -static int omap24xxcam_sensor_if_enable(struct omap24xxcam_device *cam) -{ - int rval; - struct v4l2_ifparm p; - - rval = vidioc_int_g_ifparm(cam->sdev, &p); - if (rval) { - dev_err(cam->dev, "vidioc_int_g_ifparm failed with %d\n", rval); - return rval; - } - - cam->if_type = p.if_type; - - cam->cc_ctrl = CC_CTRL_CC_EN; - - switch (p.if_type) { - case V4L2_IF_TYPE_BT656: - if (p.u.bt656.frame_start_on_rising_vs) - cam->cc_ctrl |= CC_CTRL_NOBT_SYNCHRO; - if (p.u.bt656.bt_sync_correct) - cam->cc_ctrl |= CC_CTRL_BT_CORRECT; - if (p.u.bt656.swap) - cam->cc_ctrl |= CC_CTRL_PAR_ORDERCAM; - if (p.u.bt656.latch_clk_inv) - cam->cc_ctrl |= CC_CTRL_PAR_CLK_POL; - if (p.u.bt656.nobt_hs_inv) - cam->cc_ctrl |= CC_CTRL_NOBT_HS_POL; - if (p.u.bt656.nobt_vs_inv) - cam->cc_ctrl |= CC_CTRL_NOBT_VS_POL; - - switch (p.u.bt656.mode) { - case V4L2_IF_TYPE_BT656_MODE_NOBT_8BIT: - cam->cc_ctrl |= CC_CTRL_PAR_MODE_NOBT8; - break; - case V4L2_IF_TYPE_BT656_MODE_NOBT_10BIT: - cam->cc_ctrl |= CC_CTRL_PAR_MODE_NOBT10; - break; - case V4L2_IF_TYPE_BT656_MODE_NOBT_12BIT: - cam->cc_ctrl |= CC_CTRL_PAR_MODE_NOBT12; - break; - case V4L2_IF_TYPE_BT656_MODE_BT_8BIT: - cam->cc_ctrl |= CC_CTRL_PAR_MODE_BT8; - break; - case V4L2_IF_TYPE_BT656_MODE_BT_10BIT: - cam->cc_ctrl |= CC_CTRL_PAR_MODE_BT10; - break; - default: - dev_err(cam->dev, - "bt656 interface mode %d not supported\n", - p.u.bt656.mode); - return -EINVAL; - } - /* - * The clock rate that the sensor wants has changed. - * We have to adjust the xclk from OMAP 2 side to - * match the sensor's wish as closely as possible. - */ - if (p.u.bt656.clock_curr != cam->if_u.bt656.xclk) { - u32 xclk = p.u.bt656.clock_curr; - u32 divisor; - - if (xclk == 0) - return -EINVAL; - - if (xclk > CAM_MCLK) - xclk = CAM_MCLK; - - divisor = CAM_MCLK / xclk; - if (divisor * xclk < CAM_MCLK) - divisor++; - if (CAM_MCLK / divisor < p.u.bt656.clock_min - && divisor > 1) - divisor--; - if (divisor > 30) - divisor = 30; - - xclk = CAM_MCLK / divisor; - - if (xclk < p.u.bt656.clock_min - || xclk > p.u.bt656.clock_max) - return -EINVAL; - - cam->if_u.bt656.xclk = xclk; - } - omap24xxcam_core_xclk_set(cam, cam->if_u.bt656.xclk); - break; - default: - /* FIXME: how about other interfaces? */ - dev_err(cam->dev, "interface type %d not supported\n", - p.if_type); - return -EINVAL; - } - - return 0; -} - -static void omap24xxcam_sensor_if_disable(const struct omap24xxcam_device *cam) -{ - switch (cam->if_type) { - case V4L2_IF_TYPE_BT656: - omap24xxcam_core_xclk_set(cam, 0); - break; - } -} - -/* - * Initialise the sensor hardware. - */ -static int omap24xxcam_sensor_init(struct omap24xxcam_device *cam) -{ - int err = 0; - struct v4l2_int_device *sdev = cam->sdev; - - omap24xxcam_clock_on(cam); - err = omap24xxcam_sensor_if_enable(cam); - if (err) { - dev_err(cam->dev, "sensor interface could not be enabled at " - "initialisation, %d\n", err); - cam->sdev = NULL; - goto out; - } - - /* power up sensor during sensor initialization */ - vidioc_int_s_power(sdev, 1); - - err = vidioc_int_dev_init(sdev); - if (err) { - dev_err(cam->dev, "cannot initialize sensor, error %d\n", err); - /* Sensor init failed --- it's nonexistent to us! */ - cam->sdev = NULL; - goto out; - } - - dev_info(cam->dev, "sensor is %s\n", sdev->name); - -out: - omap24xxcam_sensor_if_disable(cam); - omap24xxcam_clock_off(cam); - - vidioc_int_s_power(sdev, 0); - - return err; -} - -static void omap24xxcam_sensor_exit(struct omap24xxcam_device *cam) -{ - if (cam->sdev) - vidioc_int_dev_exit(cam->sdev); -} - -static void omap24xxcam_sensor_disable(struct omap24xxcam_device *cam) -{ - omap24xxcam_sensor_if_disable(cam); - omap24xxcam_clock_off(cam); - vidioc_int_s_power(cam->sdev, 0); -} - -/* - * Power-up and configure camera sensor. It's ready for capturing now. - */ -static int omap24xxcam_sensor_enable(struct omap24xxcam_device *cam) -{ - int rval; - - omap24xxcam_clock_on(cam); - - omap24xxcam_sensor_if_enable(cam); - - rval = vidioc_int_s_power(cam->sdev, 1); - if (rval) - goto out; - - rval = vidioc_int_init(cam->sdev); - if (rval) - goto out; - - return 0; - -out: - omap24xxcam_sensor_disable(cam); - - return rval; -} - -static void omap24xxcam_sensor_reset_work(struct work_struct *work) -{ - struct omap24xxcam_device *cam = - container_of(work, struct omap24xxcam_device, - sensor_reset_work); - - if (atomic_read(&cam->reset_disable)) - return; - - omap24xxcam_capture_stop(cam); - - if (vidioc_int_reset(cam->sdev) == 0) { - vidioc_int_init(cam->sdev); - } else { - /* Can't reset it by vidioc_int_reset. */ - omap24xxcam_sensor_disable(cam); - omap24xxcam_sensor_enable(cam); - } - - omap24xxcam_capture_cont(cam); -} - -/* - * - * IOCTL interface. - * - */ - -static int vidioc_querycap(struct file *file, void *fh, - struct v4l2_capability *cap) -{ - struct omap24xxcam_fh *ofh = fh; - struct omap24xxcam_device *cam = ofh->cam; - - strlcpy(cap->driver, CAM_NAME, sizeof(cap->driver)); - strlcpy(cap->card, cam->vfd->name, sizeof(cap->card)); - cap->capabilities = V4L2_CAP_VIDEO_CAPTURE | V4L2_CAP_STREAMING; - - return 0; -} - -static int vidioc_enum_fmt_vid_cap(struct file *file, void *fh, - struct v4l2_fmtdesc *f) -{ - struct omap24xxcam_fh *ofh = fh; - struct omap24xxcam_device *cam = ofh->cam; - int rval; - - rval = vidioc_int_enum_fmt_cap(cam->sdev, f); - - return rval; -} - -static int vidioc_g_fmt_vid_cap(struct file *file, void *fh, - struct v4l2_format *f) -{ - struct omap24xxcam_fh *ofh = fh; - struct omap24xxcam_device *cam = ofh->cam; - int rval; - - mutex_lock(&cam->mutex); - rval = vidioc_int_g_fmt_cap(cam->sdev, f); - mutex_unlock(&cam->mutex); - - return rval; -} - -static int vidioc_s_fmt_vid_cap(struct file *file, void *fh, - struct v4l2_format *f) -{ - struct omap24xxcam_fh *ofh = fh; - struct omap24xxcam_device *cam = ofh->cam; - int rval; - - mutex_lock(&cam->mutex); - if (cam->streaming) { - rval = -EBUSY; - goto out; - } - - rval = vidioc_int_s_fmt_cap(cam->sdev, f); - -out: - mutex_unlock(&cam->mutex); - - if (!rval) { - mutex_lock(&ofh->vbq.vb_lock); - ofh->pix = f->fmt.pix; - mutex_unlock(&ofh->vbq.vb_lock); - } - - memset(f, 0, sizeof(*f)); - vidioc_g_fmt_vid_cap(file, fh, f); - - return rval; -} - -static int vidioc_try_fmt_vid_cap(struct file *file, void *fh, - struct v4l2_format *f) -{ - struct omap24xxcam_fh *ofh = fh; - struct omap24xxcam_device *cam = ofh->cam; - int rval; - - mutex_lock(&cam->mutex); - rval = vidioc_int_try_fmt_cap(cam->sdev, f); - mutex_unlock(&cam->mutex); - - return rval; -} - -static int vidioc_reqbufs(struct file *file, void *fh, - struct v4l2_requestbuffers *b) -{ - struct omap24xxcam_fh *ofh = fh; - struct omap24xxcam_device *cam = ofh->cam; - int rval; - - mutex_lock(&cam->mutex); - if (cam->streaming) { - mutex_unlock(&cam->mutex); - return -EBUSY; - } - - omap24xxcam_vbq_free_mmap_buffers(&ofh->vbq); - mutex_unlock(&cam->mutex); - - rval = videobuf_reqbufs(&ofh->vbq, b); - - /* - * Either videobuf_reqbufs failed or the buffers are not - * memory-mapped (which would need special attention). - */ - if (rval < 0 || b->memory != V4L2_MEMORY_MMAP) - goto out; - - rval = omap24xxcam_vbq_alloc_mmap_buffers(&ofh->vbq, rval); - if (rval) - omap24xxcam_vbq_free_mmap_buffers(&ofh->vbq); - -out: - return rval; -} - -static int vidioc_querybuf(struct file *file, void *fh, - struct v4l2_buffer *b) -{ - struct omap24xxcam_fh *ofh = fh; - - return videobuf_querybuf(&ofh->vbq, b); -} - -static int vidioc_qbuf(struct file *file, void *fh, struct v4l2_buffer *b) -{ - struct omap24xxcam_fh *ofh = fh; - - return videobuf_qbuf(&ofh->vbq, b); -} - -static int vidioc_dqbuf(struct file *file, void *fh, struct v4l2_buffer *b) -{ - struct omap24xxcam_fh *ofh = fh; - struct omap24xxcam_device *cam = ofh->cam; - struct videobuf_buffer *vb; - int rval; - -videobuf_dqbuf_again: - rval = videobuf_dqbuf(&ofh->vbq, b, file->f_flags & O_NONBLOCK); - if (rval) - goto out; - - vb = ofh->vbq.bufs[b->index]; - - mutex_lock(&cam->mutex); - /* _needs_reset returns -EIO if reset is required. */ - rval = vidioc_int_g_needs_reset(cam->sdev, (void *)vb->baddr); - mutex_unlock(&cam->mutex); - if (rval == -EIO) - schedule_work(&cam->sensor_reset_work); - else - rval = 0; - -out: - /* - * This is a hack. We don't want to show -EIO to the user - * space. Requeue the buffer and try again if we're not doing - * this in non-blocking mode. - */ - if (rval == -EIO) { - videobuf_qbuf(&ofh->vbq, b); - if (!(file->f_flags & O_NONBLOCK)) - goto videobuf_dqbuf_again; - /* - * We don't have a videobuf_buffer now --- maybe next - * time... - */ - rval = -EAGAIN; - } - - return rval; -} - -static int vidioc_streamon(struct file *file, void *fh, enum v4l2_buf_type i) -{ - struct omap24xxcam_fh *ofh = fh; - struct omap24xxcam_device *cam = ofh->cam; - int rval; - - mutex_lock(&cam->mutex); - if (cam->streaming) { - rval = -EBUSY; - goto out; - } - - rval = omap24xxcam_sensor_if_enable(cam); - if (rval) { - dev_dbg(cam->dev, "vidioc_int_g_ifparm failed\n"); - goto out; - } - - rval = videobuf_streamon(&ofh->vbq); - if (!rval) { - cam->streaming = file; - sysfs_notify(&cam->dev->kobj, NULL, "streaming"); - } - -out: - mutex_unlock(&cam->mutex); - - return rval; -} - -static int vidioc_streamoff(struct file *file, void *fh, enum v4l2_buf_type i) -{ - struct omap24xxcam_fh *ofh = fh; - struct omap24xxcam_device *cam = ofh->cam; - struct videobuf_queue *q = &ofh->vbq; - int rval; - - atomic_inc(&cam->reset_disable); - - flush_work(&cam->sensor_reset_work); - - rval = videobuf_streamoff(q); - if (!rval) { - mutex_lock(&cam->mutex); - cam->streaming = NULL; - mutex_unlock(&cam->mutex); - sysfs_notify(&cam->dev->kobj, NULL, "streaming"); - } - - atomic_dec(&cam->reset_disable); - - return rval; -} - -static int vidioc_enum_input(struct file *file, void *fh, - struct v4l2_input *inp) -{ - if (inp->index > 0) - return -EINVAL; - - strlcpy(inp->name, "camera", sizeof(inp->name)); - inp->type = V4L2_INPUT_TYPE_CAMERA; - - return 0; -} - -static int vidioc_g_input(struct file *file, void *fh, unsigned int *i) -{ - *i = 0; - - return 0; -} - -static int vidioc_s_input(struct file *file, void *fh, unsigned int i) -{ - if (i > 0) - return -EINVAL; - - return 0; -} - -static int vidioc_queryctrl(struct file *file, void *fh, - struct v4l2_queryctrl *a) -{ - struct omap24xxcam_fh *ofh = fh; - struct omap24xxcam_device *cam = ofh->cam; - int rval; - - rval = vidioc_int_queryctrl(cam->sdev, a); - - return rval; -} - -static int vidioc_g_ctrl(struct file *file, void *fh, - struct v4l2_control *a) -{ - struct omap24xxcam_fh *ofh = fh; - struct omap24xxcam_device *cam = ofh->cam; - int rval; - - mutex_lock(&cam->mutex); - rval = vidioc_int_g_ctrl(cam->sdev, a); - mutex_unlock(&cam->mutex); - - return rval; -} - -static int vidioc_s_ctrl(struct file *file, void *fh, - struct v4l2_control *a) -{ - struct omap24xxcam_fh *ofh = fh; - struct omap24xxcam_device *cam = ofh->cam; - int rval; - - mutex_lock(&cam->mutex); - rval = vidioc_int_s_ctrl(cam->sdev, a); - mutex_unlock(&cam->mutex); - - return rval; -} - -static int vidioc_g_parm(struct file *file, void *fh, - struct v4l2_streamparm *a) { - struct omap24xxcam_fh *ofh = fh; - struct omap24xxcam_device *cam = ofh->cam; - int rval; - - mutex_lock(&cam->mutex); - rval = vidioc_int_g_parm(cam->sdev, a); - mutex_unlock(&cam->mutex); - - return rval; -} - -static int vidioc_s_parm(struct file *file, void *fh, - struct v4l2_streamparm *a) -{ - struct omap24xxcam_fh *ofh = fh; - struct omap24xxcam_device *cam = ofh->cam; - struct v4l2_streamparm old_streamparm; - int rval; - - mutex_lock(&cam->mutex); - if (cam->streaming) { - rval = -EBUSY; - goto out; - } - - old_streamparm.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; - rval = vidioc_int_g_parm(cam->sdev, &old_streamparm); - if (rval) - goto out; - - rval = vidioc_int_s_parm(cam->sdev, a); - if (rval) - goto out; - - rval = omap24xxcam_sensor_if_enable(cam); - /* - * Revert to old streaming parameters if enabling sensor - * interface with the new ones failed. - */ - if (rval) - vidioc_int_s_parm(cam->sdev, &old_streamparm); - -out: - mutex_unlock(&cam->mutex); - - return rval; -} - -/* - * - * File operations. - * - */ - -static unsigned int omap24xxcam_poll(struct file *file, - struct poll_table_struct *wait) -{ - struct omap24xxcam_fh *fh = file->private_data; - struct omap24xxcam_device *cam = fh->cam; - struct videobuf_buffer *vb; - - mutex_lock(&cam->mutex); - if (cam->streaming != file) { - mutex_unlock(&cam->mutex); - return POLLERR; - } - mutex_unlock(&cam->mutex); - - mutex_lock(&fh->vbq.vb_lock); - if (list_empty(&fh->vbq.stream)) { - mutex_unlock(&fh->vbq.vb_lock); - return POLLERR; - } - vb = list_entry(fh->vbq.stream.next, struct videobuf_buffer, stream); - mutex_unlock(&fh->vbq.vb_lock); - - poll_wait(file, &vb->done, wait); - - if (vb->state == VIDEOBUF_DONE || vb->state == VIDEOBUF_ERROR) - return POLLIN | POLLRDNORM; - - return 0; -} - -static int omap24xxcam_mmap_buffers(struct file *file, - struct vm_area_struct *vma) -{ - struct omap24xxcam_fh *fh = file->private_data; - struct omap24xxcam_device *cam = fh->cam; - struct videobuf_queue *vbq = &fh->vbq; - unsigned int first, last, size, i, j; - int err = 0; - - mutex_lock(&cam->mutex); - if (cam->streaming) { - mutex_unlock(&cam->mutex); - return -EBUSY; - } - mutex_unlock(&cam->mutex); - mutex_lock(&vbq->vb_lock); - - /* look for first buffer to map */ - for (first = 0; first < VIDEO_MAX_FRAME; first++) { - if (NULL == vbq->bufs[first]) - continue; - if (V4L2_MEMORY_MMAP != vbq->bufs[first]->memory) - continue; - if (vbq->bufs[first]->boff == (vma->vm_pgoff << PAGE_SHIFT)) - break; - } - - /* look for last buffer to map */ - for (size = 0, last = first; last < VIDEO_MAX_FRAME; last++) { - if (NULL == vbq->bufs[last]) - continue; - if (V4L2_MEMORY_MMAP != vbq->bufs[last]->memory) - continue; - size += vbq->bufs[last]->bsize; - if (size == (vma->vm_end - vma->vm_start)) - break; - } - - size = 0; - for (i = first; i <= last && i < VIDEO_MAX_FRAME; i++) { - struct videobuf_dmabuf *dma = videobuf_to_dma(vbq->bufs[i]); - - for (j = 0; j < dma->sglen; j++) { - err = remap_pfn_range( - vma, vma->vm_start + size, - page_to_pfn(sg_page(&dma->sglist[j])), - sg_dma_len(&dma->sglist[j]), vma->vm_page_prot); - if (err) - goto out; - size += sg_dma_len(&dma->sglist[j]); - } - } - -out: - mutex_unlock(&vbq->vb_lock); - - return err; -} - -static int omap24xxcam_mmap(struct file *file, struct vm_area_struct *vma) -{ - struct omap24xxcam_fh *fh = file->private_data; - int rval; - - /* let the video-buf mapper check arguments and set-up structures */ - rval = videobuf_mmap_mapper(&fh->vbq, vma); - if (rval) - return rval; - - vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot); - - /* do mapping to our allocated buffers */ - rval = omap24xxcam_mmap_buffers(file, vma); - /* - * In case of error, free vma->vm_private_data allocated by - * videobuf_mmap_mapper. - */ - if (rval) - kfree(vma->vm_private_data); - - return rval; -} - -static int omap24xxcam_open(struct file *file) -{ - struct omap24xxcam_device *cam = omap24xxcam.priv; - struct omap24xxcam_fh *fh; - struct v4l2_format format; - - if (!cam || !cam->vfd) - return -ENODEV; - - fh = kzalloc(sizeof(*fh), GFP_KERNEL); - if (fh == NULL) - return -ENOMEM; - - mutex_lock(&cam->mutex); - if (cam->sdev == NULL || !try_module_get(cam->sdev->module)) { - mutex_unlock(&cam->mutex); - goto out_try_module_get; - } - - if (atomic_inc_return(&cam->users) == 1) { - omap24xxcam_hwinit(cam); - if (omap24xxcam_sensor_enable(cam)) { - mutex_unlock(&cam->mutex); - goto out_omap24xxcam_sensor_enable; - } - } - mutex_unlock(&cam->mutex); - - fh->cam = cam; - mutex_lock(&cam->mutex); - vidioc_int_g_fmt_cap(cam->sdev, &format); - mutex_unlock(&cam->mutex); - /* FIXME: how about fh->pix when there are more users? */ - fh->pix = format.fmt.pix; - - file->private_data = fh; - - spin_lock_init(&fh->vbq_lock); - - videobuf_queue_sg_init(&fh->vbq, &omap24xxcam_vbq_ops, NULL, - &fh->vbq_lock, V4L2_BUF_TYPE_VIDEO_CAPTURE, - V4L2_FIELD_NONE, - sizeof(struct videobuf_buffer), fh, NULL); - - return 0; - -out_omap24xxcam_sensor_enable: - omap24xxcam_poweron_reset(cam); - module_put(cam->sdev->module); - -out_try_module_get: - kfree(fh); - - return -ENODEV; -} - -static int omap24xxcam_release(struct file *file) -{ - struct omap24xxcam_fh *fh = file->private_data; - struct omap24xxcam_device *cam = fh->cam; - - atomic_inc(&cam->reset_disable); - - flush_work(&cam->sensor_reset_work); - - /* stop streaming capture */ - videobuf_streamoff(&fh->vbq); - - mutex_lock(&cam->mutex); - if (cam->streaming == file) { - cam->streaming = NULL; - mutex_unlock(&cam->mutex); - sysfs_notify(&cam->dev->kobj, NULL, "streaming"); - } else { - mutex_unlock(&cam->mutex); - } - - atomic_dec(&cam->reset_disable); - - omap24xxcam_vbq_free_mmap_buffers(&fh->vbq); - - /* - * Make sure the reset work we might have scheduled is not - * pending! It may be run *only* if we have users. (And it may - * not be scheduled anymore since streaming is already - * disabled.) - */ - flush_work(&cam->sensor_reset_work); - - mutex_lock(&cam->mutex); - if (atomic_dec_return(&cam->users) == 0) { - omap24xxcam_sensor_disable(cam); - omap24xxcam_poweron_reset(cam); - } - mutex_unlock(&cam->mutex); - - file->private_data = NULL; - - module_put(cam->sdev->module); - kfree(fh); - - return 0; -} - -static struct v4l2_file_operations omap24xxcam_fops = { - .ioctl = video_ioctl2, - .poll = omap24xxcam_poll, - .mmap = omap24xxcam_mmap, - .open = omap24xxcam_open, - .release = omap24xxcam_release, -}; - -/* - * - * Power management. - * - */ - -#ifdef CONFIG_PM -static int omap24xxcam_suspend(struct platform_device *pdev, pm_message_t state) -{ - struct omap24xxcam_device *cam = platform_get_drvdata(pdev); - - if (atomic_read(&cam->users) == 0) - return 0; - - if (!atomic_read(&cam->reset_disable)) - omap24xxcam_capture_stop(cam); - - omap24xxcam_sensor_disable(cam); - omap24xxcam_poweron_reset(cam); - - return 0; -} - -static int omap24xxcam_resume(struct platform_device *pdev) -{ - struct omap24xxcam_device *cam = platform_get_drvdata(pdev); - - if (atomic_read(&cam->users) == 0) - return 0; - - omap24xxcam_hwinit(cam); - omap24xxcam_sensor_enable(cam); - - if (!atomic_read(&cam->reset_disable)) - omap24xxcam_capture_cont(cam); - - return 0; -} -#endif /* CONFIG_PM */ - -static const struct v4l2_ioctl_ops omap24xxcam_ioctl_fops = { - .vidioc_querycap = vidioc_querycap, - .vidioc_enum_fmt_vid_cap = vidioc_enum_fmt_vid_cap, - .vidioc_g_fmt_vid_cap = vidioc_g_fmt_vid_cap, - .vidioc_s_fmt_vid_cap = vidioc_s_fmt_vid_cap, - .vidioc_try_fmt_vid_cap = vidioc_try_fmt_vid_cap, - .vidioc_reqbufs = vidioc_reqbufs, - .vidioc_querybuf = vidioc_querybuf, - .vidioc_qbuf = vidioc_qbuf, - .vidioc_dqbuf = vidioc_dqbuf, - .vidioc_streamon = vidioc_streamon, - .vidioc_streamoff = vidioc_streamoff, - .vidioc_enum_input = vidioc_enum_input, - .vidioc_g_input = vidioc_g_input, - .vidioc_s_input = vidioc_s_input, - .vidioc_queryctrl = vidioc_queryctrl, - .vidioc_g_ctrl = vidioc_g_ctrl, - .vidioc_s_ctrl = vidioc_s_ctrl, - .vidioc_g_parm = vidioc_g_parm, - .vidioc_s_parm = vidioc_s_parm, -}; - -/* - * - * Camera device (i.e. /dev/video). - * - */ - -static int omap24xxcam_device_register(struct v4l2_int_device *s) -{ - struct omap24xxcam_device *cam = s->u.slave->master->priv; - struct video_device *vfd; - int rval; - - /* We already have a slave. */ - if (cam->sdev) - return -EBUSY; - - cam->sdev = s; - - if (device_create_file(cam->dev, &dev_attr_streaming) != 0) { - dev_err(cam->dev, "could not register sysfs entry\n"); - rval = -EBUSY; - goto err; - } - - /* initialize the video_device struct */ - vfd = cam->vfd = video_device_alloc(); - if (!vfd) { - dev_err(cam->dev, "could not allocate video device struct\n"); - rval = -ENOMEM; - goto err; - } - vfd->release = video_device_release; - - vfd->v4l2_dev = &cam->v4l2_dev; - - strlcpy(vfd->name, CAM_NAME, sizeof(vfd->name)); - vfd->fops = &omap24xxcam_fops; - vfd->ioctl_ops = &omap24xxcam_ioctl_fops; - - omap24xxcam_hwinit(cam); - - rval = omap24xxcam_sensor_init(cam); - if (rval) - goto err; - - if (video_register_device(vfd, VFL_TYPE_GRABBER, video_nr) < 0) { - dev_err(cam->dev, "could not register V4L device\n"); - rval = -EBUSY; - goto err; - } - - omap24xxcam_poweron_reset(cam); - - dev_info(cam->dev, "registered device %s\n", - video_device_node_name(vfd)); - - return 0; - -err: - omap24xxcam_device_unregister(s); - - return rval; -} - -static void omap24xxcam_device_unregister(struct v4l2_int_device *s) -{ - struct omap24xxcam_device *cam = s->u.slave->master->priv; - - omap24xxcam_sensor_exit(cam); - - if (cam->vfd) { - if (!video_is_registered(cam->vfd)) { - /* - * The device was never registered, so release the - * video_device struct directly. - */ - video_device_release(cam->vfd); - } else { - /* - * The unregister function will release the - * video_device struct as well as - * unregistering it. - */ - video_unregister_device(cam->vfd); - } - cam->vfd = NULL; - } - - device_remove_file(cam->dev, &dev_attr_streaming); - - cam->sdev = NULL; -} - -static struct v4l2_int_master omap24xxcam_master = { - .attach = omap24xxcam_device_register, - .detach = omap24xxcam_device_unregister, -}; - -static struct v4l2_int_device omap24xxcam = { - .module = THIS_MODULE, - .name = CAM_NAME, - .type = v4l2_int_type_master, - .u = { - .master = &omap24xxcam_master - }, -}; - -/* - * - * Driver initialisation and deinitialisation. - * - */ - -static int omap24xxcam_probe(struct platform_device *pdev) -{ - struct omap24xxcam_device *cam; - struct resource *mem; - int irq; - - cam = kzalloc(sizeof(*cam), GFP_KERNEL); - if (!cam) { - dev_err(&pdev->dev, "could not allocate memory\n"); - goto err; - } - - platform_set_drvdata(pdev, cam); - - cam->dev = &pdev->dev; - - if (v4l2_device_register(&pdev->dev, &cam->v4l2_dev)) { - dev_err(&pdev->dev, "v4l2_device_register failed\n"); - goto err; - } - - /* - * Impose a lower limit on the amount of memory allocated for - * capture. We require at least enough memory to double-buffer - * QVGA (300KB). - */ - if (capture_mem < 320 * 240 * 2 * 2) - capture_mem = 320 * 240 * 2 * 2; - cam->capture_mem = capture_mem; - - /* request the mem region for the camera registers */ - mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (!mem) { - dev_err(cam->dev, "no mem resource?\n"); - goto err; - } - if (!request_mem_region(mem->start, resource_size(mem), pdev->name)) { - dev_err(cam->dev, - "cannot reserve camera register I/O region\n"); - goto err; - } - cam->mmio_base_phys = mem->start; - cam->mmio_size = resource_size(mem); - - /* map the region */ - cam->mmio_base = ioremap_nocache(cam->mmio_base_phys, cam->mmio_size); - if (!cam->mmio_base) { - dev_err(cam->dev, "cannot map camera register I/O region\n"); - goto err; - } - - irq = platform_get_irq(pdev, 0); - if (irq <= 0) { - dev_err(cam->dev, "no irq for camera?\n"); - goto err; - } - - /* install the interrupt service routine */ - if (request_irq(irq, omap24xxcam_isr, 0, CAM_NAME, cam)) { - dev_err(cam->dev, - "could not install interrupt service routine\n"); - goto err; - } - cam->irq = irq; - - if (omap24xxcam_clock_get(cam)) - goto err; - - INIT_WORK(&cam->sensor_reset_work, omap24xxcam_sensor_reset_work); - - mutex_init(&cam->mutex); - spin_lock_init(&cam->core_enable_disable_lock); - - omap24xxcam_sgdma_init(&cam->sgdma, - cam->mmio_base + CAMDMA_REG_OFFSET, - omap24xxcam_stalled_dma_reset, - (unsigned long)cam); - - omap24xxcam.priv = cam; - - if (v4l2_int_device_register(&omap24xxcam)) - goto err; - - return 0; - -err: - omap24xxcam_remove(pdev); - return -ENODEV; -} - -static int omap24xxcam_remove(struct platform_device *pdev) -{ - struct omap24xxcam_device *cam = platform_get_drvdata(pdev); - - if (!cam) - return 0; - - if (omap24xxcam.priv != NULL) - v4l2_int_device_unregister(&omap24xxcam); - omap24xxcam.priv = NULL; - - omap24xxcam_clock_put(cam); - - if (cam->irq) { - free_irq(cam->irq, cam); - cam->irq = 0; - } - - if (cam->mmio_base) { - iounmap((void *)cam->mmio_base); - cam->mmio_base = 0; - } - - if (cam->mmio_base_phys) { - release_mem_region(cam->mmio_base_phys, cam->mmio_size); - cam->mmio_base_phys = 0; - } - - v4l2_device_unregister(&cam->v4l2_dev); - - kfree(cam); - - return 0; -} - -static struct platform_driver omap24xxcam_driver = { - .probe = omap24xxcam_probe, - .remove = omap24xxcam_remove, -#ifdef CONFIG_PM - .suspend = omap24xxcam_suspend, - .resume = omap24xxcam_resume, -#endif - .driver = { - .name = CAM_NAME, - .owner = THIS_MODULE, - }, -}; - -module_platform_driver(omap24xxcam_driver); - -MODULE_AUTHOR("Sakari Ailus <sakari.ailus@nokia.com>"); -MODULE_DESCRIPTION("OMAP24xx Video for Linux camera driver"); -MODULE_LICENSE("GPL"); -MODULE_VERSION(OMAP24XXCAM_VERSION); -module_param(video_nr, int, 0); -MODULE_PARM_DESC(video_nr, - "Minor number for video device (-1 ==> auto assign)"); -module_param(capture_mem, int, 0); -MODULE_PARM_DESC(capture_mem, "Maximum amount of memory for capture " - "buffers (default 4800kiB)"); diff --git a/drivers/media/platform/omap24xxcam.h b/drivers/media/platform/omap24xxcam.h deleted file mode 100644 index 7f6f791..0000000 --- a/drivers/media/platform/omap24xxcam.h +++ /dev/null @@ -1,596 +0,0 @@ -/* - * drivers/media/platform/omap24xxcam.h - * - * Copyright (C) 2004 MontaVista Software, Inc. - * Copyright (C) 2004 Texas Instruments. - * Copyright (C) 2007 Nokia Corporation. - * - * Contact: Sakari Ailus <sakari.ailus@nokia.com> - * - * Based on code from Andy Lowe <source@mvista.com>. - * - * 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 <media/videobuf-dma-sg.h> -#include <media/v4l2-int-device.h> -#include <media/v4l2-device.h> - -/* - * - * 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. */ - - void __iomem *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; - - struct v4l2_device v4l2_dev; - - /*** 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; - void __iomem *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(u32 __iomem *base, u32 offset) -{ - return readl(base + offset); -} - -static inline u32 omap24xxcam_reg_out(u32 __iomem *base, u32 offset, - u32 val) -{ - writel(val, base + offset); - return val; -} - -static inline u32 omap24xxcam_reg_merge(u32 __iomem *base, u32 offset, - u32 val, u32 mask) -{ - u32 __iomem *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, - void __iomem *base, - void (*reset_callback)(unsigned long data), - unsigned long reset_callback_data); -void omap24xxcam_sgdma_exit(struct omap24xxcam_sgdma *sgdma); - -#endif |
