diff options
| author | Mauro Carvalho Chehab <mchehab@kernel.org> | 2022-03-13 11:18:20 +0100 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@kernel.org> | 2022-03-18 05:58:34 +0100 |
| commit | ceafdaac46ea2c623a64eabaed64abd2fe7cb76f (patch) | |
| tree | c255efc7915e7b7696bbbf17c309b9e1b24828ea /drivers/media/platform/omap3isp/ispccdc.c | |
| parent | d24a170bde6543fa2879d3c422b7874716cdf038 (diff) | |
media: platform: rename omap3isp/ to ti/omap3isp/
As the end goal is to have platform drivers split by vendor,
rename omap3isp/ to ti/omap3isp/.
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Diffstat (limited to 'drivers/media/platform/omap3isp/ispccdc.c')
| -rw-r--r-- | drivers/media/platform/omap3isp/ispccdc.c | 2760 |
1 files changed, 0 insertions, 2760 deletions
diff --git a/drivers/media/platform/omap3isp/ispccdc.c b/drivers/media/platform/omap3isp/ispccdc.c deleted file mode 100644 index 108b5e9f82cb..000000000000 --- a/drivers/media/platform/omap3isp/ispccdc.c +++ /dev/null @@ -1,2760 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-only -/* - * ispccdc.c - * - * TI OMAP3 ISP - CCDC module - * - * Copyright (C) 2009-2010 Nokia Corporation - * Copyright (C) 2009 Texas Instruments, Inc. - * - * Contacts: Laurent Pinchart <laurent.pinchart@ideasonboard.com> - * Sakari Ailus <sakari.ailus@iki.fi> - */ - -#include <linux/module.h> -#include <linux/uaccess.h> -#include <linux/delay.h> -#include <linux/device.h> -#include <linux/dma-mapping.h> -#include <linux/mm.h> -#include <linux/sched.h> -#include <linux/slab.h> -#include <media/v4l2-event.h> - -#include "isp.h" -#include "ispreg.h" -#include "ispccdc.h" - -#define CCDC_MIN_WIDTH 32 -#define CCDC_MIN_HEIGHT 32 - -static struct v4l2_mbus_framefmt * -__ccdc_get_format(struct isp_ccdc_device *ccdc, - struct v4l2_subdev_state *sd_state, - unsigned int pad, enum v4l2_subdev_format_whence which); - -static const unsigned int ccdc_fmts[] = { - MEDIA_BUS_FMT_Y8_1X8, - MEDIA_BUS_FMT_Y10_1X10, - MEDIA_BUS_FMT_Y12_1X12, - MEDIA_BUS_FMT_SGRBG8_1X8, - MEDIA_BUS_FMT_SRGGB8_1X8, - MEDIA_BUS_FMT_SBGGR8_1X8, - MEDIA_BUS_FMT_SGBRG8_1X8, - MEDIA_BUS_FMT_SGRBG10_1X10, - MEDIA_BUS_FMT_SRGGB10_1X10, - MEDIA_BUS_FMT_SBGGR10_1X10, - MEDIA_BUS_FMT_SGBRG10_1X10, - MEDIA_BUS_FMT_SGRBG12_1X12, - MEDIA_BUS_FMT_SRGGB12_1X12, - MEDIA_BUS_FMT_SBGGR12_1X12, - MEDIA_BUS_FMT_SGBRG12_1X12, - MEDIA_BUS_FMT_YUYV8_2X8, - MEDIA_BUS_FMT_UYVY8_2X8, -}; - -/* - * ccdc_print_status - Print current CCDC Module register values. - * @ccdc: Pointer to ISP CCDC device. - * - * Also prints other debug information stored in the CCDC module. - */ -#define CCDC_PRINT_REGISTER(isp, name)\ - dev_dbg(isp->dev, "###CCDC " #name "=0x%08x\n", \ - isp_reg_readl(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_##name)) - -static void ccdc_print_status(struct isp_ccdc_device *ccdc) -{ - struct isp_device *isp = to_isp_device(ccdc); - - dev_dbg(isp->dev, "-------------CCDC Register dump-------------\n"); - - CCDC_PRINT_REGISTER(isp, PCR); - CCDC_PRINT_REGISTER(isp, SYN_MODE); - CCDC_PRINT_REGISTER(isp, HD_VD_WID); - CCDC_PRINT_REGISTER(isp, PIX_LINES); - CCDC_PRINT_REGISTER(isp, HORZ_INFO); - CCDC_PRINT_REGISTER(isp, VERT_START); - CCDC_PRINT_REGISTER(isp, VERT_LINES); - CCDC_PRINT_REGISTER(isp, CULLING); - CCDC_PRINT_REGISTER(isp, HSIZE_OFF); - CCDC_PRINT_REGISTER(isp, SDOFST); - CCDC_PRINT_REGISTER(isp, SDR_ADDR); - CCDC_PRINT_REGISTER(isp, CLAMP); - CCDC_PRINT_REGISTER(isp, DCSUB); - CCDC_PRINT_REGISTER(isp, COLPTN); - CCDC_PRINT_REGISTER(isp, BLKCMP); - CCDC_PRINT_REGISTER(isp, FPC); - CCDC_PRINT_REGISTER(isp, FPC_ADDR); - CCDC_PRINT_REGISTER(isp, VDINT); - CCDC_PRINT_REGISTER(isp, ALAW); - CCDC_PRINT_REGISTER(isp, REC656IF); - CCDC_PRINT_REGISTER(isp, CFG); - CCDC_PRINT_REGISTER(isp, FMTCFG); - CCDC_PRINT_REGISTER(isp, FMT_HORZ); - CCDC_PRINT_REGISTER(isp, FMT_VERT); - CCDC_PRINT_REGISTER(isp, PRGEVEN0); - CCDC_PRINT_REGISTER(isp, PRGEVEN1); - CCDC_PRINT_REGISTER(isp, PRGODD0); - CCDC_PRINT_REGISTER(isp, PRGODD1); - CCDC_PRINT_REGISTER(isp, VP_OUT); - CCDC_PRINT_REGISTER(isp, LSC_CONFIG); - CCDC_PRINT_REGISTER(isp, LSC_INITIAL); - CCDC_PRINT_REGISTER(isp, LSC_TABLE_BASE); - CCDC_PRINT_REGISTER(isp, LSC_TABLE_OFFSET); - - dev_dbg(isp->dev, "--------------------------------------------\n"); -} - -/* - * omap3isp_ccdc_busy - Get busy state of the CCDC. - * @ccdc: Pointer to ISP CCDC device. - */ -int omap3isp_ccdc_busy(struct isp_ccdc_device *ccdc) -{ - struct isp_device *isp = to_isp_device(ccdc); - - return isp_reg_readl(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_PCR) & - ISPCCDC_PCR_BUSY; -} - -/* ----------------------------------------------------------------------------- - * Lens Shading Compensation - */ - -/* - * ccdc_lsc_validate_config - Check that LSC configuration is valid. - * @ccdc: Pointer to ISP CCDC device. - * @lsc_cfg: the LSC configuration to check. - * - * Returns 0 if the LSC configuration is valid, or -EINVAL if invalid. - */ -static int ccdc_lsc_validate_config(struct isp_ccdc_device *ccdc, - struct omap3isp_ccdc_lsc_config *lsc_cfg) -{ - struct isp_device *isp = to_isp_device(ccdc); - struct v4l2_mbus_framefmt *format; - unsigned int paxel_width, paxel_height; - unsigned int paxel_shift_x, paxel_shift_y; - unsigned int min_width, min_height, min_size; - unsigned int input_width, input_height; - - paxel_shift_x = lsc_cfg->gain_mode_m; - paxel_shift_y = lsc_cfg->gain_mode_n; - - if ((paxel_shift_x < 2) || (paxel_shift_x > 6) || - (paxel_shift_y < 2) || (paxel_shift_y > 6)) { - dev_dbg(isp->dev, "CCDC: LSC: Invalid paxel size\n"); - return -EINVAL; - } - - if (lsc_cfg->offset & 3) { - dev_dbg(isp->dev, - "CCDC: LSC: Offset must be a multiple of 4\n"); - return -EINVAL; - } - - if ((lsc_cfg->initial_x & 1) || (lsc_cfg->initial_y & 1)) { - dev_dbg(isp->dev, "CCDC: LSC: initial_x and y must be even\n"); - return -EINVAL; - } - - format = __ccdc_get_format(ccdc, NULL, CCDC_PAD_SINK, - V4L2_SUBDEV_FORMAT_ACTIVE); - input_width = format->width; - input_height = format->height; - - /* Calculate minimum bytesize for validation */ - paxel_width = 1 << paxel_shift_x; - min_width = ((input_width + lsc_cfg->initial_x + paxel_width - 1) - >> paxel_shift_x) + 1; - - paxel_height = 1 << paxel_shift_y; - min_height = ((input_height + lsc_cfg->initial_y + paxel_height - 1) - >> paxel_shift_y) + 1; - - min_size = 4 * min_width * min_height; - if (min_size > lsc_cfg->size) { - dev_dbg(isp->dev, "CCDC: LSC: too small table\n"); - return -EINVAL; - } - if (lsc_cfg->offset < (min_width * 4)) { - dev_dbg(isp->dev, "CCDC: LSC: Offset is too small\n"); - return -EINVAL; - } - if ((lsc_cfg->size / lsc_cfg->offset) < min_height) { - dev_dbg(isp->dev, "CCDC: LSC: Wrong size/offset combination\n"); - return -EINVAL; - } - return 0; -} - -/* - * ccdc_lsc_program_table - Program Lens Shading Compensation table address. - * @ccdc: Pointer to ISP CCDC device. - */ -static void ccdc_lsc_program_table(struct isp_ccdc_device *ccdc, - dma_addr_t addr) -{ - isp_reg_writel(to_isp_device(ccdc), addr, - OMAP3_ISP_IOMEM_CCDC, ISPCCDC_LSC_TABLE_BASE); -} - -/* - * ccdc_lsc_setup_regs - Configures the lens shading compensation module - * @ccdc: Pointer to ISP CCDC device. - */ -static void ccdc_lsc_setup_regs(struct isp_ccdc_device *ccdc, - struct omap3isp_ccdc_lsc_config *cfg) -{ - struct isp_device *isp = to_isp_device(ccdc); - int reg; - - isp_reg_writel(isp, cfg->offset, OMAP3_ISP_IOMEM_CCDC, - ISPCCDC_LSC_TABLE_OFFSET); - - reg = 0; - reg |= cfg->gain_mode_n << ISPCCDC_LSC_GAIN_MODE_N_SHIFT; - reg |= cfg->gain_mode_m << ISPCCDC_LSC_GAIN_MODE_M_SHIFT; - reg |= cfg->gain_format << ISPCCDC_LSC_GAIN_FORMAT_SHIFT; - isp_reg_writel(isp, reg, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_LSC_CONFIG); - - reg = 0; - reg &= ~ISPCCDC_LSC_INITIAL_X_MASK; - reg |= cfg->initial_x << ISPCCDC_LSC_INITIAL_X_SHIFT; - reg &= ~ISPCCDC_LSC_INITIAL_Y_MASK; - reg |= cfg->initial_y << ISPCCDC_LSC_INITIAL_Y_SHIFT; - isp_reg_writel(isp, reg, OMAP3_ISP_IOMEM_CCDC, - ISPCCDC_LSC_INITIAL); -} - -static int ccdc_lsc_wait_prefetch(struct isp_ccdc_device *ccdc) -{ - struct isp_device *isp = to_isp_device(ccdc); - unsigned int wait; - - isp_reg_writel(isp, IRQ0STATUS_CCDC_LSC_PREF_COMP_IRQ, - OMAP3_ISP_IOMEM_MAIN, ISP_IRQ0STATUS); - - /* timeout 1 ms */ - for (wait = 0; wait < 1000; wait++) { - if (isp_reg_readl(isp, OMAP3_ISP_IOMEM_MAIN, ISP_IRQ0STATUS) & - IRQ0STATUS_CCDC_LSC_PREF_COMP_IRQ) { - isp_reg_writel(isp, IRQ0STATUS_CCDC_LSC_PREF_COMP_IRQ, - OMAP3_ISP_IOMEM_MAIN, ISP_IRQ0STATUS); - return 0; - } - - rmb(); - udelay(1); - } - - return -ETIMEDOUT; -} - -/* - * __ccdc_lsc_enable - Enables/Disables the Lens Shading Compensation module. - * @ccdc: Pointer to ISP CCDC device. - * @enable: 0 Disables LSC, 1 Enables LSC. - */ -static int __ccdc_lsc_enable(struct isp_ccdc_device *ccdc, int enable) -{ - struct isp_device *isp = to_isp_device(ccdc); - const struct v4l2_mbus_framefmt *format = - __ccdc_get_format(ccdc, NULL, CCDC_PAD_SINK, - V4L2_SUBDEV_FORMAT_ACTIVE); - - if ((format->code != MEDIA_BUS_FMT_SGRBG10_1X10) && - (format->code != MEDIA_BUS_FMT_SRGGB10_1X10) && - (format->code != MEDIA_BUS_FMT_SBGGR10_1X10) && - (format->code != MEDIA_BUS_FMT_SGBRG10_1X10)) - return -EINVAL; - - if (enable) - omap3isp_sbl_enable(isp, OMAP3_ISP_SBL_CCDC_LSC_READ); - - isp_reg_clr_set(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_LSC_CONFIG, - ISPCCDC_LSC_ENABLE, enable ? ISPCCDC_LSC_ENABLE : 0); - - if (enable) { - if (ccdc_lsc_wait_prefetch(ccdc) < 0) { - isp_reg_clr(isp, OMAP3_ISP_IOMEM_CCDC, - ISPCCDC_LSC_CONFIG, ISPCCDC_LSC_ENABLE); - ccdc->lsc.state = LSC_STATE_STOPPED; - dev_warn(to_device(ccdc), "LSC prefetch timeout\n"); - return -ETIMEDOUT; - } - ccdc->lsc.state = LSC_STATE_RUNNING; - } else { - ccdc->lsc.state = LSC_STATE_STOPPING; - } - - return 0; -} - -static int ccdc_lsc_busy(struct isp_ccdc_device *ccdc) -{ - struct isp_device *isp = to_isp_device(ccdc); - - return isp_reg_readl(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_LSC_CONFIG) & - ISPCCDC_LSC_BUSY; -} - -/* - * __ccdc_lsc_configure - Apply a new configuration to the LSC engine - * @ccdc: Pointer to ISP CCDC device - * @req: New configuration request - */ -static int __ccdc_lsc_configure(struct isp_ccdc_device *ccdc, - struct ispccdc_lsc_config_req *req) -{ - if (!req->enable) - return -EINVAL; - - if (ccdc_lsc_validate_config(ccdc, &req->config) < 0) { - dev_dbg(to_device(ccdc), "Discard LSC configuration\n"); - return -EINVAL; - } - - if (ccdc_lsc_busy(ccdc)) - return -EBUSY; - - ccdc_lsc_setup_regs(ccdc, &req->config); - ccdc_lsc_program_table(ccdc, req->table.dma); - return 0; -} - -/* - * ccdc_lsc_error_handler - Handle LSC prefetch error scenario. - * @ccdc: Pointer to ISP CCDC device. - * - * Disables LSC, and defers enablement to shadow registers update time. - */ -static void ccdc_lsc_error_handler(struct isp_ccdc_device *ccdc) -{ - struct isp_device *isp = to_isp_device(ccdc); - /* - * From OMAP3 TRM: When this event is pending, the module - * goes into transparent mode (output =input). Normal - * operation can be resumed at the start of the next frame - * after: - * 1) Clearing this event - * 2) Disabling the LSC module - * 3) Enabling it - */ - isp_reg_clr(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_LSC_CONFIG, - ISPCCDC_LSC_ENABLE); - ccdc->lsc.state = LSC_STATE_STOPPED; -} - -static void ccdc_lsc_free_request(struct isp_ccdc_device *ccdc, - struct ispccdc_lsc_config_req *req) -{ - struct isp_device *isp = to_isp_device(ccdc); - - if (req == NULL) - return; - - if (req->table.addr) { - sg_free_table(&req->table.sgt); - dma_free_coherent(isp->dev, req->config.size, req->table.addr, - req->table.dma); - } - - kfree(req); -} - -static void ccdc_lsc_free_queue(struct isp_ccdc_device *ccdc, - struct list_head *queue) -{ - struct ispccdc_lsc_config_req *req, *n; - unsigned long flags; - - spin_lock_irqsave(&ccdc->lsc.req_lock, flags); - list_for_each_entry_safe(req, n, queue, list) { - list_del(&req->list); - spin_unlock_irqrestore(&ccdc->lsc.req_lock, flags); - ccdc_lsc_free_request(ccdc, req); - spin_lock_irqsave(&ccdc->lsc.req_lock, flags); - } - spin_unlock_irqrestore(&ccdc->lsc.req_lock, flags); -} - -static void ccdc_lsc_free_table_work(struct work_struct *work) -{ - struct isp_ccdc_device *ccdc; - struct ispccdc_lsc *lsc; - - lsc = container_of(work, struct ispccdc_lsc, table_work); - ccdc = container_of(lsc, struct isp_ccdc_device, lsc); - - ccdc_lsc_free_queue(ccdc, &lsc->free_queue); -} - -/* - * ccdc_lsc_config - Configure the LSC module from a userspace request - * - * Store the request LSC configuration in the LSC engine request pointer. The - * configuration will be applied to the hardware when the CCDC will be enabled, - * or at the next LSC interrupt if the CCDC is already running. - */ -static int ccdc_lsc_config(struct isp_ccdc_device *ccdc, - struct omap3isp_ccdc_update_config *config) -{ - struct isp_device *isp = to_isp_device(ccdc); - struct ispccdc_lsc_config_req *req; - unsigned long flags; - u16 update; - int ret; - - update = config->update & - (OMAP3ISP_CCDC_CONFIG_LSC | OMAP3ISP_CCDC_TBL_LSC); - if (!update) - return 0; - - if (update != (OMAP3ISP_CCDC_CONFIG_LSC | OMAP3ISP_CCDC_TBL_LSC)) { - dev_dbg(to_device(ccdc), - "%s: Both LSC configuration and table need to be supplied\n", - __func__); - return -EINVAL; - } - - req = kzalloc(sizeof(*req), GFP_KERNEL); - if (req == NULL) - return -ENOMEM; - - if (config->flag & OMAP3ISP_CCDC_CONFIG_LSC) { - if (copy_from_user(&req->config, config->lsc_cfg, - sizeof(req->config))) { - ret = -EFAULT; - goto done; - } - - req->enable = 1; - - req->table.addr = dma_alloc_coherent(isp->dev, req->config.size, - &req->table.dma, - GFP_KERNEL); - if (req->table.addr == NULL) { - ret = -ENOMEM; - goto done; - } - - ret = dma_get_sgtable(isp->dev, &req->table.sgt, - req->table.addr, req->table.dma, - req->config.size); - if (ret < 0) - goto done; - - dma_sync_sg_for_cpu(isp->dev, req->table.sgt.sgl, - req->table.sgt.nents, DMA_TO_DEVICE); - - if (copy_from_user(req->table.addr, config->lsc, - req->config.size)) { - ret = -EFAULT; - goto done; - } - - dma_sync_sg_for_device(isp->dev, req->table.sgt.sgl, - req->table.sgt.nents, DMA_TO_DEVICE); - } - - spin_lock_irqsave(&ccdc->lsc.req_lock, flags); - if (ccdc->lsc.request) { - list_add_tail(&ccdc->lsc.request->list, &ccdc->lsc.free_queue); - schedule_work(&ccdc->lsc.table_work); - } - ccdc->lsc.request = req; - spin_unlock_irqrestore(&ccdc->lsc.req_lock, flags); - - ret = 0; - -done: - if (ret < 0) - ccdc_lsc_free_request(ccdc, req); - - return ret; -} - -static inline int ccdc_lsc_is_configured(struct isp_ccdc_device *ccdc) -{ - unsigned long flags; - int ret; - - spin_lock_irqsave(&ccdc->lsc.req_lock, flags); - ret = ccdc->lsc.active != NULL; - spin_unlock_irqrestore(&ccdc->lsc.req_lock, flags); - - return ret; -} - -static int ccdc_lsc_enable(struct isp_ccdc_device *ccdc) -{ - struct ispccdc_lsc *lsc = &ccdc->lsc; - - if (lsc->state != LSC_STATE_STOPPED) - return -EINVAL; - - if (lsc->active) { - list_add_tail(&lsc->active->list, &lsc->free_queue); - lsc->active = NULL; - } - - if (__ccdc_lsc_configure(ccdc, lsc->request) < 0) { - omap3isp_sbl_disable(to_isp_device(ccdc), - OMAP3_ISP_SBL_CCDC_LSC_READ); - list_add_tail(&lsc->request->list, &lsc->free_queue); - lsc->request = NULL; - goto done; - } - - lsc->active = lsc->request; - lsc->request = NULL; - __ccdc_lsc_enable(ccdc, 1); - -done: - if (!list_empty(&lsc->free_queue)) - schedule_work(&lsc->table_work); - - return 0; -} - -/* ----------------------------------------------------------------------------- - * Parameters configuration - */ - -/* - * ccdc_configure_clamp - Configure optical-black or digital clamping - * @ccdc: Pointer to ISP CCDC device. - * - * The CCDC performs either optical-black or digital clamp. Configure and enable - * the selected clamp method. - */ -static void ccdc_configure_clamp(struct isp_ccdc_device *ccdc) -{ - struct isp_device *isp = to_isp_device(ccdc); - u32 clamp; - - if (ccdc->obclamp) { - clamp = ccdc->clamp.obgain << ISPCCDC_CLAMP_OBGAIN_SHIFT; - clamp |= ccdc->clamp.oblen << ISPCCDC_CLAMP_OBSLEN_SHIFT; - clamp |= ccdc->clamp.oblines << ISPCCDC_CLAMP_OBSLN_SHIFT; - clamp |= ccdc->clamp.obstpixel << ISPCCDC_CLAMP_OBST_SHIFT; - isp_reg_writel(isp, clamp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_CLAMP); - } else { - isp_reg_writel(isp, ccdc->clamp.dcsubval, - OMAP3_ISP_IOMEM_CCDC, ISPCCDC_DCSUB); - } - - isp_reg_clr_set(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_CLAMP, - ISPCCDC_CLAMP_CLAMPEN, - ccdc->obclamp ? ISPCCDC_CLAMP_CLAMPEN : 0); -} - -/* - * ccdc_configure_fpc - Configure Faulty Pixel Correction - * @ccdc: Pointer to ISP CCDC device. - */ -static void ccdc_configure_fpc(struct isp_ccdc_device *ccdc) -{ - struct isp_device *isp = to_isp_device(ccdc); - - isp_reg_clr(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_FPC, ISPCCDC_FPC_FPCEN); - - if (!ccdc->fpc_en) - return; - - isp_reg_writel(isp, ccdc->fpc.dma, OMAP3_ISP_IOMEM_CCDC, - ISPCCDC_FPC_ADDR); - /* The FPNUM field must be set before enabling FPC. */ - isp_reg_writel(isp, (ccdc->fpc.fpnum << ISPCCDC_FPC_FPNUM_SHIFT), - OMAP3_ISP_IOMEM_CCDC, ISPCCDC_FPC); - isp_reg_writel(isp, (ccdc->fpc.fpnum << ISPCCDC_FPC_FPNUM_SHIFT) | - ISPCCDC_FPC_FPCEN, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_FPC); -} - -/* - * ccdc_configure_black_comp - Configure Black Level Compensation. - * @ccdc: Pointer to ISP CCDC device. - */ -static void ccdc_configure_black_comp(struct isp_ccdc_device *ccdc) -{ - struct isp_device *isp = to_isp_device(ccdc); - u32 blcomp; - - blcomp = ccdc->blcomp.b_mg << ISPCCDC_BLKCMP_B_MG_SHIFT; - blcomp |= ccdc->blcomp.gb_g << ISPCCDC_BLKCMP_GB_G_SHIFT; - blcomp |= ccdc->blcomp.gr_cy << ISPCCDC_BLKCMP_GR_CY_SHIFT; - blcomp |= ccdc->blcomp.r_ye << ISPCCDC_BLKCMP_R_YE_SHIFT; - - isp_reg_writel(isp, blcomp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_BLKCMP); -} - -/* - * ccdc_configure_lpf - Configure Low-Pass Filter (LPF). - * @ccdc: Pointer to ISP CCDC device. - */ -static void ccdc_configure_lpf(struct isp_ccdc_device *ccdc) -{ - struct isp_device *isp = to_isp_device(ccdc); - - isp_reg_clr_set(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_SYN_MODE, - ISPCCDC_SYN_MODE_LPF, - ccdc->lpf ? ISPCCDC_SYN_MODE_LPF : 0); -} - -/* - * ccdc_configure_alaw - Configure A-law compression. - * @ccdc: Pointer to ISP CCDC device. - */ -static void ccdc_configure_alaw(struct isp_ccdc_device *ccdc) -{ - struct isp_device *isp = to_isp_device(ccdc); - const struct isp_format_info *info; - u32 alaw = 0; - - info = omap3isp_video_format_info(ccdc->formats[CCDC_PAD_SINK].code); - - switch (info->width) { - case 8: - return; - - case 10: - alaw = ISPCCDC_ALAW_GWDI_9_0; - break; - case 11: - alaw = ISPCCDC_ALAW_GWDI_10_1; - break; - case 12: - alaw = ISPCCDC_ALAW_GWDI_11_2; - break; - case 13: - alaw = ISPCCDC_ALAW_GWDI_12_3; - break; - } - - if (ccdc->alaw) - alaw |= ISPCCDC_ALAW_CCDTBL; - - isp_reg_writel(isp, alaw, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_ALAW); -} - -/* - * ccdc_config_imgattr - Configure sensor image specific attributes. - * @ccdc: Pointer to ISP CCDC device. - * @colptn: Color pattern of the sensor. - */ -static void ccdc_config_imgattr(struct isp_ccdc_device *ccdc, u32 colptn) -{ - struct isp_device *isp = to_isp_device(ccdc); - - isp_reg_writel(isp, colptn, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_COLPTN); -} - -/* - * ccdc_config - Set CCDC configuration from userspace - * @ccdc: Pointer to ISP CCDC device. - * @ccdc_struct: Structure containing CCDC configuration sent from userspace. - * - * Returns 0 if successful, -EINVAL if the pointer to the configuration - * structure is null, or the copy_from_user function fails to copy user space - * memory to kernel space memory. - */ -static int ccdc_config(struct isp_ccdc_device *ccdc, - struct omap3isp_ccdc_update_config *ccdc_struct) -{ - struct isp_device *isp = to_isp_device(ccdc); - unsigned long flags; - - spin_lock_irqsave(&ccdc->lock, flags); - ccdc->shadow_update = 1; - spin_unlock_irqrestore(&ccdc->lock, flags); - - if (OMAP3ISP_CCDC_ALAW & ccdc_struct->update) { - ccdc->alaw = !!(OMAP3ISP_CCDC_ALAW & ccdc_struct->flag); - ccdc->update |= OMAP3ISP_CCDC_ALAW; - } - - if (OMAP3ISP_CCDC_LPF & ccdc_struct->update) { - ccdc->lpf = !!(OMAP3ISP_CCDC_LPF & ccdc_struct->flag); - ccdc->update |= OMAP3ISP_CCDC_LPF; - } - - if (OMAP3ISP_CCDC_BLCLAMP & ccdc_struct->update) { - if (copy_from_user(&ccdc->clamp, ccdc_struct->bclamp, - sizeof(ccdc->clamp))) { - ccdc->shadow_update = 0; - return -EFAULT; - } - - ccdc->obclamp = !!(OMAP3ISP_CCDC_BLCLAMP & ccdc_struct->flag); - ccdc->update |= OMAP3ISP_CCDC_BLCLAMP; - } - - if (OMAP3ISP_CCDC_BCOMP & ccdc_struct->update) { - if (copy_from_user(&ccdc->blcomp, ccdc_struct->blcomp, - sizeof(ccdc->blcomp))) { - ccdc->shadow_update = 0; - return -EFAULT; - } - - ccdc->update |= OMAP3ISP_CCDC_BCOMP; - } - - ccdc->shadow_update = 0; - - if (OMAP3ISP_CCDC_FPC & ccdc_struct->update) { - struct omap3isp_ccdc_fpc fpc; - struct ispccdc_fpc fpc_old = { .addr = NULL, }; - struct ispccdc_fpc fpc_new; - u32 size; - - if (ccdc->state != ISP_PIPELINE_STREAM_STOPPED) - return -EBUSY; - - ccdc->fpc_en = !!(OMAP3ISP_CCDC_FPC & ccdc_struct->flag); - - if (ccdc->fpc_en) { - if (copy_from_user(&fpc, ccdc_struct->fpc, sizeof(fpc))) - return -EFAULT; - - size = fpc.fpnum * 4; - - /* - * The table address must be 64-bytes aligned, which is - * guaranteed by dma_alloc_coherent(). - */ - fpc_new.fpnum = fpc.fpnum; - fpc_new.addr = dma_alloc_coherent(isp->dev, size, - &fpc_new.dma, - GFP_KERNEL); - if (fpc_new.addr == NULL) - return -ENOMEM; - - if (copy_from_user(fpc_new.addr, - (__force void __user *)(long)fpc.fpcaddr, - size)) { - dma_free_coherent(isp->dev, size, fpc_new.addr, - fpc_new.dma); - return -EFAULT; - } - - fpc_old = ccdc->fpc; - ccdc->fpc = fpc_new; - } - - ccdc_configure_fpc(ccdc); - - if (fpc_old.addr != NULL) - dma_free_coherent(isp->dev, fpc_old.fpnum * 4, - fpc_old.addr, fpc_old.dma); - } - - return ccdc_lsc_config(ccdc, ccdc_struct); -} - -static void ccdc_apply_controls(struct isp_ccdc_device *ccdc) -{ - if (ccdc->update & OMAP3ISP_CCDC_ALAW) { - ccdc_configure_alaw(ccdc); - ccdc->update &= ~OMAP3ISP_CCDC_ALAW; - } - - if (ccdc->update & OMAP3ISP_CCDC_LPF) { - ccdc_configure_lpf(ccdc); - ccdc->update &= ~OMAP3ISP_CCDC_LPF; - } - - if (ccdc->update & OMAP3ISP_CCDC_BLCLAMP) { - ccdc_configure_clamp(ccdc); - ccdc->update &= ~OMAP3ISP_CCDC_BLCLAMP; - } - - if (ccdc->update & OMAP3ISP_CCDC_BCOMP) { - ccdc_configure_black_comp(ccdc); - ccdc->update &= ~OMAP3ISP_CCDC_BCOMP; - } -} - -/* - * omap3isp_ccdc_restore_context - Restore values of the CCDC module registers - * @isp: Pointer to ISP device - */ -void omap3isp_ccdc_restore_context(struct isp_device *isp) -{ - struct isp_ccdc_device *ccdc = &isp->isp_ccdc; - - isp_reg_set(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_CFG, ISPCCDC_CFG_VDLC); - - ccdc->update = OMAP3ISP_CCDC_ALAW | OMAP3ISP_CCDC_LPF - | OMAP3ISP_CCDC_BLCLAMP | OMAP3ISP_CCDC_BCOMP; - ccdc_apply_controls(ccdc); - ccdc_configure_fpc(ccdc); -} - -/* ----------------------------------------------------------------------------- - * Format- and pipeline-related configuration helpers - */ - -/* - * ccdc_config_vp - Configure the Video Port. - * @ccdc: Pointer to ISP CCDC device. - */ -static void ccdc_config_vp(struct isp_ccdc_device *ccdc) -{ - struct isp_pipeline *pipe = to_isp_pipeline(&ccdc->subdev.entity); - struct isp_device *isp = to_isp_device(ccdc); - const struct isp_format_info *info; - struct v4l2_mbus_framefmt *format; - unsigned long l3_ick = pipe->l3_ick; - unsigned int max_div = isp->revision == ISP_REVISION_15_0 ? 64 : 8; - unsigned int div = 0; - u32 fmtcfg = ISPCCDC_FMTCFG_VPEN; - - format = &ccdc->formats[CCDC_PAD_SOURCE_VP]; - - if (!format->code) { - /* Disable the video port when the input format isn't supported. - * This is indicated by a pixel code set to 0. - */ - isp_reg_writel(isp, 0, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_FMTCFG); - return; - } - - isp_reg_writel(isp, (0 << ISPCCDC_FMT_HORZ_FMTSPH_SHIFT) | - (format->width << ISPCCDC_FMT_HORZ_FMTLNH_SHIFT), - OMAP3_ISP_IOMEM_CCDC, ISPCCDC_FMT_HORZ); - isp_reg_writel(isp, (0 << ISPCCDC_FMT_VERT_FMTSLV_SHIFT) | - ((format->height + 1) << ISPCCDC_FMT_VERT_FMTLNV_SHIFT), - OMAP3_ISP_IOMEM_CCDC, ISPCCDC_FMT_VERT); - - isp_reg_writel(isp, (format->width << ISPCCDC_VP_OUT_HORZ_NUM_SHIFT) | - (format->height << ISPCCDC_VP_OUT_VERT_NUM_SHIFT), - OMAP3_ISP_IOMEM_CCDC, ISPCCDC_VP_OUT); - - info = omap3isp_video_format_info(ccdc->formats[CCDC_PAD_SINK].code); - - switch (info->width) { - case 8: - case 10: - fmtcfg |= ISPCCDC_FMTCFG_VPIN_9_0; - break; - case 11: - fmtcfg |= ISPCCDC_FMTCFG_VPIN_10_1; - break; - case 12: - fmtcfg |= ISPCCDC_FMTCFG_VPIN_11_2; - break; - case 13: - fmtcfg |= ISPCCDC_FMTCFG_VPIN_12_3; - break; - } - - if (pipe->input) - div = DIV_ROUND_UP(l3_ick, pipe->max_rate); - else if (pipe->external_rate) - div = l3_ick / pipe->external_rate; - - div = clamp(div, 2U, max_div); - fmtcfg |= (div - 2) << ISPCCDC_FMTCFG_VPIF_FRQ_SHIFT; - - isp_reg_writel(isp, fmtcfg, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_FMTCFG); -} - -/* - * ccdc_config_outlineoffset - Configure memory saving output line offset - * @ccdc: Pointer to ISP CCDC device. - * @bpl: Number of bytes per line when stored in memory. - * @field: Field order when storing interlaced formats in memory. - * - * Configure the offsets for the line output control: - * - * - The horizontal line offset is defined as the number of bytes between the - * start of two consecutive lines in memory. Set it to the given bytes per - * line value. - * - * - The field offset value is defined as the number of lines to offset the - * start of the field identified by FID = 1. Set it to one. - * - * - The line offset values are defined as the number of lines (as defined by - * the horizontal line offset) between the start of two consecutive lines for - * all combinations of odd/even lines in odd/even fields. When interleaving - * fields set them all to two lines, and to one line otherwise. - */ -static void ccdc_config_outlineoffset(struct isp_ccdc_device *ccdc, - unsigned int bpl, - enum v4l2_field field) -{ - struct isp_device *isp = to_isp_device(ccdc); - u32 sdofst = 0; - - isp_reg_writel(isp, bpl & 0xffff, OMAP3_ISP_IOMEM_CCDC, - ISPCCDC_HSIZE_OFF); - - switch (field) { - case V4L2_FIELD_INTERLACED_TB: - case V4L2_FIELD_INTERLACED_BT: - /* When interleaving fields in memory offset field one by one - * line and set the line offset to two lines. - */ - sdofst |= (1 << ISPCCDC_SDOFST_LOFST0_SHIFT) - | (1 << ISPCCDC_SDOFST_LOFST1_SHIFT) - | (1 << ISPCCDC_SDOFST_LOFST2_SHIFT) - | (1 << ISPCCDC_SDOFST_LOFST3_SHIFT); - break; - - default: - /* In all other cases set the line offsets to one line. */ - break; - } - - isp_reg_writel(isp, sdofst, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_SDOFST); -} - -/* - * ccdc_set_outaddr - Set memory address to save output image - * @ccdc: Pointer to ISP CCDC device. - * @addr: ISP MMU Mapped 32-bit memory address aligned on 32 byte boundary. - * - * Sets the memory address where the output will be saved. - */ -static void ccdc_set_outaddr(struct isp_ccdc_device *ccdc, u32 addr) -{ - struct isp_device *isp = to_isp_device(ccdc); - - isp_reg_writel(isp, addr, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_SDR_ADDR); -} - -/* - * omap3isp_ccdc_max_rate - Calculate maximum input data rate based on the input - * @ccdc: Pointer to ISP CCDC device. - * @max_rate: Maximum calculated data rate. - * - * Returns in *max_rate less value between calculated and passed - */ -void omap3isp_ccdc_max_rate(struct isp_ccdc_device *ccdc, - unsigned int *max_rate) -{ - struct isp_pipeline *pipe = to_isp_pipeline(&ccdc->subdev.entity); - unsigned int rate; - - if (pipe == NULL) - return; - - /* - * TRM says that for parallel sensors the maximum data rate - * should be 90% form L3/2 clock, otherwise just L3/2. - */ - if (ccdc->input == CCDC_INPUT_PARALLEL) - rate = pipe->l3_ick / 2 * 9 / 10; - else - rate = pipe->l3_ick / 2; - - *max_rate = min(*max_rate, rate); -} - -/* - * ccdc_config_sync_if - Set CCDC sync interface configuration - * @ccdc: Pointer to ISP CCDC device. - * @parcfg: Parallel interface platform data (may be NULL) - * @data_size: Data size - */ -static void ccdc_config_sync_if(struct isp_ccdc_device *ccdc, - struct isp_parallel_cfg *parcfg, - unsigned int data_size) -{ - struct isp_device *isp = to_isp_device(ccdc); - const struct v4l2_mbus_framefmt *format; - u32 syn_mode = ISPCCDC_SYN_MODE_VDHDEN; - - format = &ccdc->formats[CCDC_PAD_SINK]; - - if (format->code == MEDIA_BUS_FMT_YUYV8_2X8 || - format->code == MEDIA_BUS_FMT_UYVY8_2X8) { - /* According to the OMAP3 TRM the input mode only affects SYNC - * mode, enabling BT.656 mode should take precedence. However, - * in practice setting the input mode to YCbCr data on 8 bits - * seems to be required in BT.656 mode. In SYNC mode set it to - * YCbCr on 16 bits as the bridge is enabled in that case. - */ - if (ccdc->bt656) - syn_mode |= ISPCCDC_SYN_MODE_INPMOD_YCBCR8; - else - syn_mode |= ISPCCDC_SYN_MODE_INPMOD_YCBCR16; - } - - switch (data_size) { - case 8: - syn_mode |= ISPCCDC_SYN_MODE_DATSIZ_8; - break; - case 10: - syn_mode |= ISPCCDC_SYN_MODE_DATSIZ_10; - break; - case 11: - syn_mode |= ISPCCDC_SYN_MODE_DATSIZ_11; - break; - case 12: - syn_mode |= ISPCCDC_SYN_MODE_DATSIZ_12; - break; - } - - if (parcfg && parcfg->data_pol) - syn_mode |= ISPCCDC_SYN_MODE_DATAPOL; - - if (parcfg && parcfg->hs_pol) - syn_mode |= ISPCCDC_SYN_MODE_HDPOL; - - /* The polarity of the vertical sync signal output by the BT.656 - * decoder is not documented and seems to be active low. - */ - if ((parcfg && parcfg->vs_pol) || ccdc->bt656) - syn_mode |= ISPCCDC_SYN_MODE_VDPOL; - - if (parcfg && parcfg->fld_pol) - syn_mode |= ISPCCDC_SYN_MODE_FLDPOL; - - isp_reg_writel(isp, syn_mode, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_SYN_MODE); - - /* The CCDC_CFG.Y8POS bit is used in YCbCr8 input mode only. The - * hardware seems to ignore it in all other input modes. - */ - if (format->code == MEDIA_BUS_FMT_UYVY8_2X8) - isp_reg_set(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_CFG, - ISPCCDC_CFG_Y8POS); - else - isp_reg_clr(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_CFG, - ISPCCDC_CFG_Y8POS); - - /* Enable or disable BT.656 mode, including error correction for the - * synchronization codes. - */ - if (ccdc->bt656) - isp_reg_set(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_REC656IF, - ISPCCDC_REC656IF_R656ON | ISPCCDC_REC656IF_ECCFVH); - else - isp_reg_clr(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_REC656IF, - ISPCCDC_REC656IF_R656ON | ISPCCDC_REC656IF_ECCFVH); - -} - -/* CCDC formats descriptions */ -static const u32 ccdc_sgrbg_pattern = - ISPCCDC_COLPTN_Gr_Cy << ISPCCDC_COLPTN_CP0PLC0_SHIFT | - ISPCCDC_COLPTN_R_Ye << ISPCCDC_COLPTN_CP0PLC1_SHIFT | - ISPCCDC_COLPTN_Gr_Cy << ISPCCDC_COLPTN_CP0PLC2_SHIFT | - ISPCCDC_COLPTN_R_Ye << ISPCCDC_COLPTN_CP0PLC3_SHIFT | - ISPCCDC_COLPTN_B_Mg << ISPCCDC_COLPTN_CP1PLC0_SHIFT | - ISPCCDC_COLPTN_Gb_G << ISPCCDC_COLPTN_CP1PLC1_SHIFT | - ISPCCDC_COLPTN_B_Mg << ISPCCDC_COLPTN_CP1PLC2_SHIFT | - ISPCCDC_COLPTN_Gb_G << ISPCCDC_COLPTN_CP1PLC3_SHIFT | - ISPCCDC_COLPTN_Gr_Cy << ISPCCDC_COLPTN_CP2PLC0_SHIFT | - ISPCCDC_COLPTN_R_Ye << ISPCCDC_COLPTN_CP2PLC1_SHIFT | - ISPCCDC_COLPTN_Gr_Cy << ISPCCDC_COLPTN_CP2PLC2_SHIFT | - ISPCCDC_COLPTN_R_Ye << ISPCCDC_COLPTN_CP2PLC3_SHIFT | - ISPCCDC_COLPTN_B_Mg << ISPCCDC_COLPTN_CP3PLC0_SHIFT | - ISPCCDC_COLPTN_Gb_G << ISPCCDC_COLPTN_CP3PLC1_SHIFT | - ISPCCDC_COLPTN_B_Mg << ISPCCDC_COLPTN_CP3PLC2_SHIFT | - ISPCCDC_COLPTN_Gb_G << ISPCCDC_COLPTN_CP3PLC3_SHIFT; - -static const u32 ccdc_srggb_pattern = - ISPCCDC_COLPTN_R_Ye << ISPCCDC_COLPTN_CP0PLC0_SHIFT | - ISPCCDC_COLPTN_Gr_Cy << ISPCCDC_COLPTN_CP0PLC1_SHIFT | - ISPCCDC_COLPTN_R_Ye << ISPCCDC_COLPTN_CP0PLC2_SHIFT | - ISPCCDC_COLPTN_Gr_Cy << ISPCCDC_COLPTN_CP0PLC3_SHIFT | - ISPCCDC_COLPTN_Gb_G << ISPCCDC_COLPTN_CP1PLC0_SHIFT | - ISPCCDC_COLPTN_B_Mg << ISPCCDC_COLPTN_CP1PLC1_SHIFT | - ISPCCDC_COLPTN_Gb_G << ISPCCDC_COLPTN_CP1PLC2_SHIFT | - ISPCCDC_COLPTN_B_Mg << ISPCCDC_COLPTN_CP1PLC3_SHIFT | - ISPCCDC_COLPTN_R_Ye << ISPCCDC_COLPTN_CP2PLC0_SHIFT | - ISPCCDC_COLPTN_Gr_Cy << ISPCCDC_COLPTN_CP2PLC1_SHIFT | - ISPCCDC_COLPTN_R_Ye << ISPCCDC_COLPTN_CP2PLC2_SHIFT | - ISPCCDC_COLPTN_Gr_Cy << ISPCCDC_COLPTN_CP2PLC3_SHIFT | - ISPCCDC_COLPTN_Gb_G << ISPCCDC_COLPTN_CP3PLC0_SHIFT | - ISPCCDC_COLPTN_B_Mg << ISPCCDC_COLPTN_CP3PLC1_SHIFT | - ISPCCDC_COLPTN_Gb_G << ISPCCDC_COLPTN_CP3PLC2_SHIFT | - ISPCCDC_COLPTN_B_Mg << ISPCCDC_COLPTN_CP3PLC3_SHIFT; - -static const u32 ccdc_sbggr_pattern = - ISPCCDC_COLPTN_B_Mg << ISPCCDC_COLPTN_CP0PLC0_SHIFT | - ISPCCDC_COLPTN_Gb_G << ISPCCDC_COLPTN_CP0PLC1_SHIFT | - ISPCCDC_COLPTN_B_Mg << ISPCCDC_COLPTN_CP0PLC2_SHIFT | - ISPCCDC_COLPTN_Gb_G << ISPCCDC_COLPTN_CP0PLC3_SHIFT | - ISPCCDC_COLPTN_Gr_Cy << ISPCCDC_COLPTN_CP1PLC0_SHIFT | - ISPCCDC_COLPTN_R_Ye << ISPCCDC_COLPTN_CP1PLC1_SHIFT | - ISPCCDC_COLPTN_Gr_Cy << ISPCCDC_COLPTN_CP1PLC2_SHIFT | - ISPCCDC_COLPTN_R_Ye << ISPCCDC_COLPTN_CP1PLC3_SHIFT | - ISPCCDC_COLPTN_B_Mg << ISPCCDC_COLPTN_CP2PLC0_SHIFT | - ISPCCDC_COLPTN_Gb_G << ISPCCDC_COLPTN_CP2PLC1_SHIFT | - ISPCCDC_COLPTN_B_Mg << ISPCCDC_COLPTN_CP2PLC2_SHIFT | - ISPCCDC_COLPTN_Gb_G << ISPCCDC_COLPTN_CP2PLC3_SHIFT | - ISPCCDC_COLPTN_Gr_Cy << ISPCCDC_COLPTN_CP3PLC0_SHIFT | - ISPCCDC_COLPTN_R_Ye << ISPCCDC_COLPTN_CP3PLC1_SHIFT | - ISPCCDC_COLPTN_Gr_Cy << ISPCCDC_COLPTN_CP3PLC2_SHIFT | - ISPCCDC_COLPTN_R_Ye << ISPCCDC_COLPTN_CP3PLC3_SHIFT; - -static const u32 ccdc_sgbrg_pattern = - ISPCCDC_COLPTN_Gb_G << ISPCCDC_COLPTN_CP0PLC0_SHIFT | - ISPCCDC_COLPTN_B_Mg << ISPCCDC_COLPTN_CP0PLC1_SHIFT | - ISPCCDC_COLPTN_Gb_G << ISPCCDC_COLPTN_CP0PLC2_SHIFT | - ISPCCDC_COLPTN_B_Mg << ISPCCDC_COLPTN_CP0PLC3_SHIFT | - ISPCCDC_COLPTN_R_Ye << ISPCCDC_COLPTN_CP1PLC0_SHIFT | - ISPCCDC_COLPTN_Gr_Cy << ISPCCDC_COLPTN_CP1PLC1_SHIFT | - ISPCCDC_COLPTN_R_Ye << ISPCCDC_COLPTN_CP1PLC2_SHIFT | - ISPCCDC_COLPTN_Gr_Cy << ISPCCDC_COLPTN_CP1PLC3_SHIFT | - ISPCCDC_COLPTN_Gb_G << ISPCCDC_COLPTN_CP2PLC0_SHIFT | - ISPCCDC_COLPTN_B_Mg << ISPCCDC_COLPTN_CP2PLC1_SHIFT | - ISPCCDC_COLPTN_Gb_G << ISPCCDC_COLPTN_CP2PLC2_SHIFT | - ISPCCDC_COLPTN_B_Mg << ISPCCDC_COLPTN_CP2PLC3_SHIFT | - ISPCCDC_COLPTN_R_Ye << ISPCCDC_COLPTN_CP3PLC0_SHIFT | - ISPCCDC_COLPTN_Gr_Cy << ISPCCDC_COLPTN_CP3PLC1_SHIFT | - ISPCCDC_COLPTN_R_Ye << ISPCCDC_COLPTN_CP3PLC2_SHIFT | - ISPCCDC_COLPTN_Gr_Cy << ISPCCDC_COLPTN_CP3PLC3_SHIFT; - -static void ccdc_configure(struct isp_ccdc_device *ccdc) -{ - struct isp_device *isp = to_isp_device(ccdc); - struct isp_parallel_cfg *parcfg = NULL; - struct v4l2_subdev *sensor; - struct v4l2_mbus_framefmt *format; - const struct v4l2_rect *crop; - const struct isp_format_info *fmt_info; - struct v4l2_subdev_format fmt_src; - unsigned int depth_out; - unsigned int depth_in = 0; - struct media_pad *pad; - unsigned long flags; - unsigned int bridge; - unsigned int shift; - unsigned int nph; - unsigned int sph; - u32 syn_mode; - u32 ccdc_pattern; - - ccdc->bt656 = false; - ccdc->fields = 0; - - pad = media_entity_remote_pad(&ccdc->pads[CCDC_PAD_SINK]); - sensor = media_entity_to_v4l2_subdev(pad->entity); - if (ccdc->input == CCDC_INPUT_PARALLEL) { - struct v4l2_subdev *sd = - to_isp_pipeline(&ccdc->subdev.entity)->external; - - parcfg = &v4l2_subdev_to_bus_cfg(sd)->bus.parallel; - ccdc->bt656 = parcfg->bt656; - } - - /* CCDC_PAD_SINK */ - format = &ccdc->formats[CCDC_PAD_SINK]; - - /* Compute the lane shifter shift value and enable the bridge when the - * input format is a non-BT.656 YUV variant. - */ - fmt_src.pad = pad->index; - fmt_src.which = V4L2_SUBDEV_FORMAT_ACTIVE; - if (!v4l2_subdev_call(sensor, pad, get_fmt, NULL, &fmt_src)) { - fmt_info = omap3isp_video_format_info(fmt_src.format.code); - depth_in = fmt_info->width; - } - - fmt_info = omap3isp_video_format_info(format->code); - depth_out = fmt_info->width; - shift = depth_in - depth_out; - - if (ccdc->bt656) - bridge = ISPCTRL_PAR_BRIDGE_DISABLE; - else if (fmt_info->code == MEDIA_BUS_FMT_YUYV8_2X8) - bridge = ISPCTRL_PAR_BRIDGE_LENDIAN; - else if (fmt_info->code == MEDIA_BUS_FMT_UYVY8_2X8) - bridge = ISPCTRL_PAR_BRIDGE_BENDIAN; - else - bridge = ISPCTRL_PAR_BRIDGE_DISABLE; - - omap3isp_configure_bridge(isp, ccdc->input, parcfg, shift, bridge); - - /* Configure the sync interface. */ - ccdc_config_sync_if(ccdc, parcfg, depth_out); - - syn_mode = isp_reg_readl(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_SYN_MODE); - - /* Use the raw, unprocessed data when writing to memory. The H3A and - * histogram modules are still fed with lens shading corrected data. - */ - syn_mode &= ~ISPCCDC_SYN_MODE_VP2SDR; - - if (ccdc->output & CCDC_OUTPUT_MEMORY) - syn_mode |= ISPCCDC_SYN_MODE_WEN; - else - syn_mode &= ~ISPCCDC_SYN_MODE_WEN; - - if (ccdc->output & CCDC_OUTPUT_RESIZER) - syn_mode |= ISPCCDC_SYN_MODE_SDR2RSZ; - else - syn_mode &= ~ISPCCDC_SYN_MODE_SDR2RSZ; - - /* Mosaic filter */ - switch (format->code) { - case MEDIA_BUS_FMT_SRGGB10_1X10: - case MEDIA_BUS_FMT_SRGGB12_1X12: - ccdc_pattern = ccdc_srggb_pattern; - break; - case MEDIA_BUS_FMT_SBGGR10_1X10: - case MEDIA_BUS_FMT_SBGGR12_1X12: - ccdc_pattern = ccdc_sbggr_pattern; - break; - case MEDIA_BUS_FMT_SGBRG10_1X10: - case MEDIA_BUS_FMT_SGBRG12_1X12: - ccdc_pattern = ccdc_sgbrg_pattern; - break; - default: - /* Use GRBG */ - ccdc_pattern = ccdc_sgrbg_pattern; - break; - } - ccdc_config_imgattr(ccdc, ccdc_pattern); - - /* Generate VD0 on the last line of the image and VD1 on the - * 2/3 height line. - */ - isp_reg_writel(isp, ((format->height - 2) << ISPCCDC_VDINT_0_SHIFT) | - ((format->height * 2 / 3) << ISPCCDC_VDINT_1_SHIFT), - OMAP3_ISP_IOMEM_CCDC, ISPCCDC_VDINT); - - /* CCDC_PAD_SOURCE_OF */ - format = &ccdc->formats[CCDC_PAD_SOURCE_OF]; - crop = &ccdc->crop; - - /* The horizontal coordinates are expressed in pixel clock cycles. We - * need two cycles per pixel in BT.656 mode, and one cycle per pixel in - * SYNC mode regardless of the format as the bridge is enabled for YUV - * formats in that case. - */ - if (ccdc->bt656) { - sph = crop->left * 2; - nph = crop->width * 2 - 1; - } else { - sph = crop->left; - nph = crop->width - 1; - } - - isp_reg_writel(isp, (sph << ISPCCDC_HORZ_INFO_SPH_SHIFT) | - (nph << ISPCCDC_HORZ_INFO_NPH_SHIFT), - OMAP3_ISP_IOMEM_CCDC, ISPCCDC_HORZ_INFO); - isp_reg_writel(isp, (crop->top << ISPCCDC_VERT_START_SLV0_SHIFT) | - (crop->top << ISPCCDC_VERT_START_SLV1_SHIFT), - OMAP3_ISP_IOMEM_CCDC, ISPCCDC_VERT_START); - isp_reg_writel(isp, (crop->height - 1) - << ISPCCDC_VERT_LINES_NLV_SHIFT, - OMAP3_ISP_IOMEM_CCDC, ISPCCDC_VERT_LINES); - - ccdc_config_outlineoffset(ccdc, ccdc->video_out.bpl_value, - format->field); - - /* When interleaving fields enable processing of the field input signal. - * This will cause the line output control module to apply the field - * offset to field 1. - */ - if (ccdc->formats[CCDC_PAD_SINK].field == V4L2_FIELD_ALTERNATE && - (format->field == V4L2_FIELD_INTERLACED_TB || - format->field == V4L2_FIELD_INTERLACED_BT)) - syn_mode |= ISPCCDC_SYN_MODE_FLDMODE; - - /* The CCDC outputs data in UYVY order by default. Swap bytes to get - * YUYV. - */ - if (format->code == MEDIA_BUS_FMT_YUYV8_1X16) - isp_reg_set(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_CFG, - ISPCCDC_CFG_BSWD); - else - isp_reg_clr(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_CFG, - ISPCCDC_CFG_BSWD); - - /* Use PACK8 mode for 1byte per pixel formats. Check for BT.656 mode - * explicitly as the driver reports 1X16 instead of 2X8 at the OF pad - * for simplicity. - */ - if (omap3isp_video_format_info(format->code)->width <= 8 || ccdc->bt656) - syn_mode |= ISPCCDC_SYN_MODE_PACK8; - else - syn_mode &= ~ISPCCDC_SYN_MODE_PACK8; - - isp_reg_writel(isp, syn_mode, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_SYN_MODE); - - /* CCDC_PAD_SOURCE_VP */ - ccdc_config_vp(ccdc); - - /* Lens shading correction. */ - spin_lock_irqsave(&ccdc->lsc.req_lock, flags); - if (ccdc->lsc.request == NULL) - goto unlock; - - WARN_ON(ccdc->lsc.active); - - /* Get last good LSC configuration. If it is not supported for - * the current active resolution discard it. - */ - if (ccdc->lsc.active == NULL && - __ccdc_lsc_configure(ccdc, ccdc->lsc.request) == 0) { - ccdc->lsc.active = ccdc->lsc.request; - } else { - list_add_tail(&ccdc->lsc.request->list, &ccdc->lsc.free_queue); - schedule_work(&ccdc->lsc.table_work); - } - - ccdc->lsc.request = NULL; - -unlock: - spin_unlock_irqrestore(&ccdc->lsc.req_lock, flags); - - ccdc_apply_controls(ccdc); -} - -static void __ccdc_enable(struct isp_ccdc_device *ccdc, int enable) -{ - struct isp_device *isp = to_isp_device(ccdc); - - /* Avoid restarting the CCDC when streaming is stopping. */ - if (enable && ccdc->stopping & CCDC_STOP_REQUEST) - return; - - isp_reg_clr_set(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_PCR, - ISPCCDC_PCR_EN, enable ? ISPCCDC_PCR_EN : 0); - - ccdc->running = enable; -} - -static int ccdc_disable(struct isp_ccdc_device *ccdc) -{ - unsigned long flags; - int ret = 0; - - spin_lock_irqsave(&ccdc->lock, flags); - if (ccdc->state == ISP_PIPELINE_STREAM_CONTINUOUS) - ccdc->stopping = CCDC_STOP_REQUEST; - if (!ccdc->running) - ccdc->stopping = CCDC_STOP_FINISHED; - spin_unlock_irqrestore(&ccdc->lock, flags); - - ret = wait_event_timeout(ccdc->wait, - ccdc->stopping == CCDC_STOP_FINISHED, - msecs_to_jiffies(2000)); - if (ret == 0) { - ret = -ETIMEDOUT; - dev_warn(to_device(ccdc), "CCDC stop timeout!\n"); - } - - omap3isp_sbl_disable(to_isp_device(ccdc), OMAP3_ISP_SBL_CCDC_LSC_READ); - - mutex_lock(&ccdc->ioctl_lock); - ccdc_lsc_free_request(ccdc, ccdc->lsc.request); - ccdc->lsc.request = ccdc->lsc.active; - ccdc->lsc.active = NULL; - cancel_work_sync(&ccdc->lsc.table_work); - ccdc_lsc_free_queue(ccdc, &ccdc->lsc.free_queue); - mutex_unlock(&ccdc->ioctl_lock); - - ccdc->stopping = CCDC_STOP_NOT_REQUESTED; - - return ret > 0 ? 0 : ret; -} - -static void ccdc_enable(struct isp_ccdc_device *ccdc) -{ - if (ccdc_lsc_is_configured(ccdc)) - __ccdc_lsc_enable(ccdc, 1); - __ccdc_enable(ccdc, 1); -} - -/* ----------------------------------------------------------------------------- - * Interrupt handling - */ - -/* - * ccdc_sbl_busy - Poll idle state of CCDC and related SBL memory write bits - * @ccdc: Pointer to ISP CCDC device. - * - * Returns zero if the CCDC is idle and the image has been written to - * memory, too. - */ -static int ccdc_sbl_busy(struct isp_ccdc_device *ccdc) -{ - struct isp_device *isp = to_isp_device(ccdc); - - return omap3isp_ccdc_busy(ccdc) - | (isp_reg_readl(isp, OMAP3_ISP_IOMEM_SBL, ISPSBL_CCDC_WR_0) & - ISPSBL_CCDC_WR_0_DATA_READY) - | (isp_reg_readl(isp, OMAP3_ISP_IOMEM_SBL, ISPSBL_CCDC_WR_1) & - ISPSBL_CCDC_WR_0_DATA_READY) - | (isp_reg_readl(isp, OMAP3_ISP_IOMEM_SBL, ISPSBL_CCDC_WR_2) & - ISPSBL_CCDC_WR_0_DATA_READY) - | (isp_reg_readl(isp, OMAP3_ISP_IOMEM_SBL, ISPSBL_CCDC_WR_3) & - ISPSBL_CCDC_WR_0_DATA_READY); -} - -/* - * ccdc_sbl_wait_idle - Wait until the CCDC and related SBL are idle - * @ccdc: Pointer to ISP CCDC device. - * @max_wait: Max retry count in us for wait for idle/busy transition. - */ -static int ccdc_sbl_wait_idle(struct isp_ccdc_device *ccdc, - unsigned int max_wait) -{ - unsigned int wait = 0; - - if (max_wait == 0) - max_wait = 10000; /* 10 ms */ - - for (wait = 0; wait <= max_wait; wait++) { - if (!ccdc_sbl_busy(ccdc)) - return 0; - - rmb(); - udelay(1); - } - - return -EBUSY; -} - -/* ccdc_handle_stopping - Handle CCDC and/or LSC stopping sequence - * @ccdc: Pointer to ISP CCDC device. - * @event: Pointing which event trigger handler - * - * Return 1 when the event and stopping request combination is satisfied, - * zero otherwise. - */ -static int ccdc_handle_stopping(struct isp_ccdc_device *ccdc, u32 event) -{ - int rval = 0; - - switch ((ccdc->stopping & 3) | event) { - case CCDC_STOP_REQUEST | CCDC_EVENT_VD1: - if (ccdc->lsc.state != LSC_STATE_STOPPED) - __ccdc_lsc_enable(ccdc, 0); - __ccdc_enable(ccdc, 0); - ccdc->stopping = CCDC_STOP_EXECUTED; - return 1; - - case CCDC_STOP_EXECUTED | CCDC_EVENT_VD0: - ccdc->stopping |= CCDC_STOP_CCDC_FINISHED; - if (ccdc->lsc.state == LSC_STATE_STOPPED) - ccdc->stopping |= CCDC_STOP_LSC_FINISHED; - rval = 1; - break; - - case CCDC_STOP_EXECUTED | CCDC_EVENT_LSC_DONE: - ccdc->stopping |= CCDC_STOP_LSC_FINISHED; - rval = 1; - break; - - case CCDC_STOP_EXECUTED | CCDC_EVENT_VD1: - return 1; - } - - if (ccdc->stopping == CCDC_STOP_FINISHED) { - wake_up(&ccdc->wait); - rval = 1; - } - - return rval; -} - -static void ccdc_hs_vs_isr(struct isp_ccdc_device *ccdc) -{ - struct isp_pipeline *pipe = to_isp_pipeline(&ccdc->subdev.entity); - struct video_device *vdev = ccdc->subdev.devnode; - struct v4l2_event event; - - /* Frame number propagation */ - atomic_inc(&pipe->frame_number); - - memset(&event, 0, sizeof(event)); - event.type = V4L2_EVENT_FRAME_SYNC; - event.u.frame_sync.frame_sequence = atomic_read(&pipe->frame_number); - - v4l2_event_queue(vdev, &event); -} - -/* - * ccdc_lsc_isr - Handle LSC events - * @ccdc: Pointer to ISP CCDC device. - * @events: LSC events - */ -static void ccdc_lsc_isr(struct isp_ccdc_device *ccdc, u32 events) -{ - unsigned long flags; - - if (events & IRQ0STATUS_CCDC_LSC_PREF_ERR_IRQ) { - struct isp_pipeline *pipe = - to_isp_pipeline(&ccdc->subdev.entity); - - ccdc_lsc_error_handler(ccdc); - pipe->error = true; - dev_dbg(to_device(ccdc), "lsc prefetch error\n"); - } - - if (!(events & IRQ0STATUS_CCDC_LSC_DONE_IRQ)) - return; - - /* LSC_DONE interrupt occur, there are two cases - * 1. stopping for reconfiguration - * 2. stopping because of STREAM OFF command - */ - spin_lock_irqsave(&ccdc->lsc.req_lock, flags); - - if (ccdc->lsc.state == LSC_STATE_STOPPING) - ccdc->lsc.state = LSC_STATE_STOPPED; - - if (ccdc_handle_stopping(ccdc, CCDC_EVENT_LSC_DONE)) - goto done; - - if (ccdc->lsc.state != LSC_STATE_RECONFIG) - goto done; - - /* LSC is in STOPPING state, change to the new state */ - ccdc->lsc.state = LSC_STATE_STOPPED; - - /* This is an exception. Start of frame and LSC_DONE interrupt - * have been received on the same time. Skip this event and wait - * for better times. - */ - if (events & IRQ0STATUS_HS_VS_IRQ) - goto done; - - /* The LSC engine is stopped at this point. Enable it if there's a - * pending request. - */ - if (ccdc->lsc.request == NULL) - goto done; - - ccdc_lsc_enable(ccdc); - -done: - spin_unlock_irqrestore(&ccdc->lsc.req_lock, flags); -} - -/* - * Check whether the CCDC has captured all fields necessary to complete the - * buffer. - */ -static bool ccdc_has_all_fields(struct isp_ccdc_device *ccdc) -{ - struct isp_pipeline *pipe = to_isp_pipeline(&ccdc->subdev.entity); - struct isp_device *isp = to_isp_device(ccdc); - enum v4l2_field of_field = ccdc->formats[CCDC_PAD_SOURCE_OF].field; - enum v4l2_field field; - - /* When the input is progressive fields don't matter. */ - if (of_field == V4L2_FIELD_NONE) - return true; - - /* Read the current field identifier. */ - field = isp_reg_readl(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_SYN_MODE) - & ISPCCDC_SYN_MODE_FLDSTAT - ? V4L2_FIELD_BOTTOM : V4L2_FIELD_TOP; - - /* When capturing fields in alternate order just store the current field - * identifier in the pipeline. - */ - if (of_field == V4L2_FIELD_ALTERNATE) { - pipe->field = field; - return true; - } - - /* The format is interlaced. Make sure we've captured both fields. */ - ccdc->fields |= field == V4L2_FIELD_BOTTOM - ? CCDC_FIELD_BOTTOM : CCDC_FIELD_TOP; - - if (ccdc->fields != CCDC_FIELD_BOTH) - return false; - - /* Verify that the field just captured corresponds to the last field - * needed based on the desired field order. - */ - if ((of_field == V4L2_FIELD_INTERLACED_TB && field == V4L2_FIELD_TOP) || - (of_field == V4L2_FIELD_INTERLACED_BT && field == V4L2_FIELD_BOTTOM)) - return false; - - /* The buffer can be completed, reset the fields for the next buffer. */ - ccdc->fields = 0; - - return true; -} - -static int ccdc_isr_buffer(struct isp_ccdc_device *ccdc) -{ - struct isp_pipeline *pipe = to_isp_pipeline(&ccdc->subdev.entity); - struct isp_device *isp = to_isp_device(ccdc); - struct isp_buffer *buffer; - - /* The CCDC generates VD0 interrupts even when disabled (the datasheet - * doesn't explicitly state if that's supposed to happen or not, so it - * can be considered as a hardware bug or as a feature, but we have to - * deal with it anyway). Disabling the CCDC when no buffer is available - * would thus not be enough, we need to handle the situation explicitly. - */ - if (list_empty(&ccdc->video_out.dmaqueue)) - return 0; - - /* We're in continuous mode, and memory writes were disabled due to a - * buffer underrun. Re-enable them now that we have a buffer. The buffer - * address has been set in ccdc_video_queue. - */ - if (ccdc->state == ISP_PIPELINE_STREAM_CONTINUOUS && ccdc->underrun) { - ccdc->underrun = 0; - return 1; - } - - /* Wait for the CCDC to become idle. */ - if (ccdc_sbl_wait_idle(ccdc, 1000)) { - dev_info(isp->dev, "CCDC won't become idle!\n"); - media_entity_enum_set(&isp->crashed, &ccdc->subdev.entity); - omap3isp_pipeline_cancel_stream(pipe); - return 0; - } - - /* Don't restart CCDC if we're just about to stop streaming. */ - if (ccdc->state == ISP_PIPELINE_STREAM_CONTINUOUS && - ccdc->stopping & CCDC_STOP_REQUEST) - return 0; - - if (!ccdc_has_all_fields(ccdc)) - return 1; - - buffer = omap3isp_video_buffer_next(&ccdc->video_out); - if (buffer != NULL) - ccdc_set_outaddr(ccdc, buffer->dma); - - pipe->state |= ISP_PIPELINE_IDLE_OUTPUT; - - if (ccdc->state == ISP_PIPELINE_STREAM_SINGLESHOT && - isp_pipeline_ready(pipe)) - omap3isp_pipeline_set_stream(pipe, - ISP_PIPELINE_STREAM_SINGLESHOT); - - return buffer != NULL; -} - -/* - * ccdc_vd0_isr - Handle VD0 event - * @ccdc: Pointer to ISP CCDC device. - * - * Executes LSC deferred enablement before next frame starts. - */ -static void ccdc_vd0_isr(struct isp_ccdc_device *ccdc) -{ - unsigned long flags; - int restart = 0; - - /* In BT.656 mode the CCDC doesn't generate an HS/VS interrupt. We thus - * need to increment the frame counter here. - */ - if (ccdc->bt656) { - struct isp_pipeline *pipe = - to_isp_pipeline(&ccdc->subdev.entity); - - atomic_inc(&pipe->frame_number); - } - - /* Emulate a VD1 interrupt for BT.656 mode, as we can't stop the CCDC in - * the VD1 interrupt handler in that mode without risking a CCDC stall - * if a short frame is received. - */ - if (ccdc->bt656) { - spin_lock_irqsave(&ccdc->lock, flags); - if (ccdc->state == ISP_PIPELINE_STREAM_CONTINUOUS && - ccdc->output & CCDC_OUTPUT_MEMORY) { - if (ccdc->lsc.state != LSC_STATE_STOPPED) - __ccdc_lsc_enable(ccdc, 0); - __ccdc_enable(ccdc, 0); - } - ccdc_handle_stopping(ccdc, CCDC_EVENT_VD1); - spin_unlock_irqrestore(&ccdc->lock, flags); - } - - spin_lock_irqsave(&ccdc->lock, flags); - if (ccdc_handle_stopping(ccdc, CCDC_EVENT_VD0)) { - spin_unlock_irqrestore(&ccdc->lock, flags); - return; - } - - if (ccdc->output & CCDC_OUTPUT_MEMORY) - restart = ccdc_isr_buffer(ccdc); - - if (!ccdc->shadow_update) - ccdc_apply_controls(ccdc); - spin_unlock_irqrestore(&ccdc->lock, flags); - - if (restart) - ccdc_enable(ccdc); -} - -/* - * ccdc_vd1_isr - Handle VD1 event - * @ccdc: Pointer to ISP CCDC device. - */ -static void ccdc_vd1_isr(struct isp_ccdc_device *ccdc) -{ - unsigned long flags; - - /* In BT.656 mode the synchronization signals are generated by the CCDC - * from the embedded sync codes. The VD0 and VD1 interrupts are thus - * only triggered when the CCDC is enabled, unlike external sync mode - * where the line counter runs even when the CCDC is stopped. We can't - * disable the CCDC at VD1 time, as no VD0 interrupt would be generated - * for a short frame, which would result in the CCDC being stopped and - * no VD interrupt generated anymore. The CCDC is stopped from the VD0 - * interrupt handler instead for BT.656. - */ - if (ccdc->bt656) - return; - - spin_lock_irqsave(&ccdc->lsc.req_lock, flags); - - /* - * Depending on the CCDC pipeline state, CCDC stopping should be - * handled differently. In SINGLESHOT we emulate an internal CCDC - * stopping because the CCDC hw works only in continuous mode. - * When CONTINUOUS pipeline state is used and the CCDC writes it's - * data to memory the CCDC and LSC are stopped immediately but - * without change the CCDC stopping state machine. The CCDC - * stopping state machine should be used only when user request - * for stopping is received (SINGLESHOT is an exception). - */ - switch (ccdc->state) { - case ISP_PIPELINE_STREAM_SINGLESHOT: - ccdc->stopping = CCDC_STOP_REQUEST; - break; - - case ISP_PIPELINE_STREAM_CONTINUOUS: - if (ccdc->output & CCDC_OUTPUT_MEMORY) { - if (ccdc->lsc.state != LSC_STATE_STOPPED) - __ccdc_lsc_enable(ccdc, 0); - __ccdc_enable(ccdc, 0); - } - break; - - case ISP_PIPELINE_STREAM_STOPPED: - break; - } - - if (ccdc_handle_stopping(ccdc, CCDC_EVENT_VD1)) - goto done; - - if (ccdc->lsc.request == NULL) - goto done; - - /* - * LSC need to be reconfigured. Stop it here and on next LSC_DONE IRQ - * do the appropriate changes in registers - */ - if (ccdc->lsc.state == LSC_STATE_RUNNING) { - __ccdc_lsc_enable(ccdc, 0); - ccdc->lsc.state = LSC_STATE_RECONFIG; - goto done; - } - - /* LSC has been in STOPPED state, enable it */ - if (ccdc->lsc.state == LSC_STATE_STOPPED) - ccdc_lsc_enable(ccdc); - -done: - spin_unlock_irqrestore(&ccdc->lsc.req_lock, flags); -} - -/* - * omap3isp_ccdc_isr - Configure CCDC during interframe time. - * @ccdc: Pointer to ISP CCDC device. - * @events: CCDC events - */ -int omap3isp_ccdc_isr(struct isp_ccdc_device *ccdc, u32 events) -{ - if (ccdc->state == ISP_PIPELINE_STREAM_STOPPED) - return 0; - - if (events & IRQ0STATUS_CCDC_VD1_IRQ) - ccdc_vd1_isr(ccdc); - - ccdc_lsc_isr(ccdc, events); - - if (events & IRQ0STATUS_CCDC_VD0_IRQ) - ccdc_vd0_isr(ccdc); - - if (events & IRQ0STATUS_HS_VS_IRQ) - ccdc_hs_vs_isr(ccdc); - - return 0; -} - -/* ----------------------------------------------------------------------------- - * ISP video operations - */ - -static int ccdc_video_queue(struct isp_video *video, struct isp_buffer *buffer) -{ - struct isp_ccdc_device *ccdc = &video->isp->isp_ccdc; - unsigned long flags; - bool restart = false; - - if (!(ccdc->output & CCDC_OUTPUT_MEMORY)) - return -ENODEV; - - ccdc_set_outaddr(ccdc, buffer->dma); - - /* We now have a buffer queued on the output, restart the pipeline - * on the next CCDC interrupt if running in continuous mode (or when - * starting the stream) in external sync mode, or immediately in BT.656 - * sync mode as no CCDC interrupt is generated when the CCDC is stopped - * in that case. - */ - spin_lock_irqsave(&ccdc->lock, flags); - if (ccdc->state == ISP_PIPELINE_STREAM_CONTINUOUS && !ccdc->running && - ccdc->bt656) - restart = true; - else - ccdc->underrun = 1; - spin_unlock_irqrestore(&ccdc->lock, flags); - - if (restart) - ccdc_enable(ccdc); - - return 0; -} - -static const struct isp_video_operations ccdc_video_ops = { - .queue = ccdc_video_queue, -}; - -/* ----------------------------------------------------------------------------- - * V4L2 subdev operations - */ - -/* - * ccdc_ioctl - CCDC module private ioctl's - * @sd: ISP CCDC V4L2 subdevice - * @cmd: ioctl command - * @arg: ioctl argument - * - * Return 0 on success or a negative error code otherwise. - */ -static long ccdc_ioctl(struct v4l2_subdev *sd, unsigned int cmd, void *arg) -{ - struct isp_ccdc_device *ccdc = v4l2_get_subdevdata(sd); - int ret; - - switch (cmd) { - case VIDIOC_OMAP3ISP_CCDC_CFG: - mutex_lock(&ccdc->ioctl_lock); - ret = ccdc_config(ccdc, arg); - mutex_unlock(&ccdc->ioctl_lock); - break; - - default: - return -ENOIOCTLCMD; - } - - return ret; -} - -static int ccdc_subscribe_event(struct v4l2_subdev *sd, struct v4l2_fh *fh, - struct v4l2_event_subscription *sub) -{ - if (sub->type != V4L2_EVENT_FRAME_SYNC) - return -EINVAL; - - /* line number is zero at frame start */ - if (sub->id != 0) - return -EINVAL; - - return v4l2_event_subscribe(fh, sub, OMAP3ISP_CCDC_NEVENTS, NULL); -} - -static int ccdc_unsubscribe_event(struct v4l2_subdev *sd, struct v4l2_fh *fh, - struct v4l2_event_subscription *sub) -{ - return v4l2_event_unsubscribe(fh, sub); -} - -/* - * ccdc_set_stream - Enable/Disable streaming on the CCDC module - * @sd: ISP CCDC V4L2 subdevice - * @enable: Enable/disable stream - * - * When writing to memory, the CCDC hardware can't be enabled without a memory - * buffer to write to. As the s_stream operation is called in response to a - * STREAMON call without any buffer queued yet, just update the enabled field - * and return immediately. The CCDC will be enabled in ccdc_isr_buffer(). - * - * When not writing to memory enable the CCDC immediately. - */ -static int ccdc_set_stream(struct v4l2_subdev *sd, int enable) -{ - struct isp_ccdc_device *ccdc = v4l2_get_subdevdata(sd); - struct isp_device *isp = to_isp_device(ccdc); - int ret = 0; - - if (ccdc->state == ISP_PIPELINE_STREAM_STOPPED) { - if (enable == ISP_PIPELINE_STREAM_STOPPED) - return 0; - - omap3isp_subclk_enable(isp, OMAP3_ISP_SUBCLK_CCDC); - isp_reg_set(isp, OMAP3_ISP_IOMEM_CCDC, ISPCCDC_CFG, - ISPCCDC_CFG_VDLC); - - ccdc_configure(ccdc); - - ccdc_print_status(ccdc); - } - - switch (enable) { - case ISP_PIPELINE_STREAM_CONTINUOUS: - if (ccdc->output & CCDC_OUTPUT_MEMORY) - omap3isp_sbl_enable(isp, OMAP3_ISP_SBL_CCDC_WRITE); - - if (ccdc->underrun || !(ccdc->output & CCDC_OUTPUT_MEMORY)) - ccdc_enable(ccdc); - - ccdc->underrun = 0; - break; - - case ISP_PIPELINE_STREAM_SINGLESHOT: - if (ccdc->output & CCDC_OUTPUT_MEMORY && - ccdc->state != ISP_PIPELINE_STREAM_SINGLESHOT) - omap3isp_sbl_enable(isp, OMAP3_ISP_SBL_CCDC_WRITE); - - ccdc_enable(ccdc); - break; - - case ISP_PIPELINE_STREAM_STOPPED: - ret = ccdc_disable(ccdc); - if (ccdc->output & CCDC_OUTPUT_MEMORY) - omap3isp_sbl_disable(isp, OMAP3_ISP_SBL_CCDC_WRITE); - omap3isp_subclk_disable(isp, OMAP3_ISP_SUBCLK_CCDC); - ccdc->underrun = 0; - break; - } - - ccdc->state = enable; - return ret; -} - -static struct v4l2_mbus_framefmt * -__ccdc_get_format(struct isp_ccdc_device *ccdc, - struct v4l2_subdev_state *sd_state, - unsigned int pad, enum v4l2_subdev_format_whence which) -{ - if (which == V4L2_SUBDEV_FORMAT_TRY) - return v4l2_subdev_get_try_format(&ccdc->subdev, sd_state, - pad); - else - return &ccdc->formats[pad]; -} - -static struct v4l2_rect * -__ccdc_get_crop(struct isp_ccdc_device *ccdc, - struct v4l2_subdev_state *sd_state, - enum v4l2_subdev_format_whence which) -{ - if (which == V4L2_SUBDEV_FORMAT_TRY) - return v4l2_subdev_get_try_crop(&ccdc->subdev, sd_state, - CCDC_PAD_SOURCE_OF); - else - return &ccdc->crop; -} - -/* - * ccdc_try_format - Try video format on a pad - * @ccdc: ISP CCDC device - * @cfg : V4L2 subdev pad configuration - * @pad: Pad number - * @fmt: Format - */ -static void -ccdc_try_format(struct isp_ccdc_device *ccdc, - struct v4l2_subdev_state *sd_state, - unsigned int pad, struct v4l2_mbus_framefmt *fmt, - enum v4l2_subdev_format_whence which) -{ - const struct isp_format_info *info; - u32 pixelcode; - unsigned int width = fmt->width; - unsigned int height = fmt->height; - struct v4l2_rect *crop; - enum v4l2_field field; - unsigned int i; - - switch (pad) { - case CCDC_PAD_SINK: - for (i = 0; i < ARRAY_SIZE(ccdc_fmts); i++) { - if (fmt->code == ccdc_fmts[i]) - break; - } - - /* If not found, use SGRBG10 as default */ - if (i >= ARRAY_SIZE(ccdc_fmts)) - fmt->code = MEDIA_BUS_FMT_SGRBG10_1X10; - - /* Clamp the input size. */ - fmt->width = clamp_t(u32, width, 32, 4096); - fmt->height = clamp_t(u32, height, 32, 4096); - - /* Default to progressive field order. */ - if (fmt->field == V4L2_FIELD_ANY) - fmt->field = V4L2_FIELD_NONE; - - break; - - case CCDC_PAD_SOURCE_OF: - pixelcode = fmt->code; - field = fmt->field; - *fmt = *__ccdc_get_format(ccdc, sd_state, CCDC_PAD_SINK, - which); - - /* In SYNC mode the bridge converts YUV formats from 2X8 to - * 1X16. In BT.656 no such conversion occurs. As we don't know - * at this point whether the source will use SYNC or BT.656 mode - * let's pretend the conversion always occurs. The CCDC will be - * configured to pack bytes in BT.656, hiding the inaccuracy. - * In all cases bytes can be swapped. - */ - if (fmt->code == MEDIA_BUS_FMT_YUYV8_2X8 || - fmt->code == MEDIA_BUS_FMT_UYVY8_2X8) { - /* Use the user requested format if YUV. */ - if (pixelcode == MEDIA_BUS_FMT_YUYV8_2X8 || - pixelcode == MEDIA_BUS_FMT_UYVY8_2X8 || - pixelcode == MEDIA_BUS_FMT_YUYV8_1X16 || - pixelcode == MEDIA_BUS_FMT_UYVY8_1X16) - fmt->code = pixelcode; - - if (fmt->code == MEDIA_BUS_FMT_YUYV8_2X8) - fmt->code = MEDIA_BUS_FMT_YUYV8_1X16; - else if (fmt->code == MEDIA_BUS_FMT_UYVY8_2X8) - fmt->code = MEDIA_BUS_FMT_UYVY8_1X16; - } - - /* Hardcode the output size to the crop rectangle size. */ - crop = __ccdc_get_crop(ccdc, sd_state, which); - fmt->width = crop->width; - fmt->height = crop->height; - - /* When input format is interlaced with alternating fields the - * CCDC can interleave the fields. - */ - if (fmt->field == V4L2_FIELD_ALTERNATE && - (field == V4L2_FIELD_INTERLACED_TB || - field == V4L2_FIELD_INTERLACED_BT)) { - fmt->field = field; - fmt->height *= 2; - } - - break; - - case CCDC_PAD_SOURCE_VP: - *fmt = *__ccdc_get_format(ccdc, sd_state, CCDC_PAD_SINK, - which); - - /* The video port interface truncates the data to 10 bits. */ - info = omap3isp_video_format_info(fmt->code); - fmt->code = info->truncated; - - /* YUV formats are not supported by the video port. */ - if (fmt->code == MEDIA_BUS_FMT_YUYV8_2X8 || - fmt->code == MEDIA_BUS_FMT_UYVY8_2X8) - fmt->code = 0; - - /* The number of lines that can be clocked out from the video - * port output must be at least one line less than the number - * of input lines. - */ - fmt->width = clamp_t(u32, width, 32, fmt->width); - fmt->height = clamp_t(u32, height, 32, fmt->height - 1); - break; - } - - /* Data is written to memory unpacked, each 10-bit or 12-bit pixel is - * stored on 2 bytes. - */ - fmt->colorspace = V4L2_COLORSPACE_SRGB; -} - -/* - * ccdc_try_crop - Validate a crop rectangle - * @ccdc: ISP CCDC device - * @sink: format on the sink pad - * @crop: crop rectangle to be validated - */ -static void ccdc_try_crop(struct isp_ccdc_device *ccdc, - const struct v4l2_mbus_framefmt *sink, - struct v4l2_rect *crop) -{ - const struct isp_format_info *info; - unsigned int max_width; - - /* For Bayer formats, restrict left/top and width/height to even values - * to keep the Bayer pattern. - */ - info = omap3isp_video_format_info(sink->code); - if (info->flavor != MEDIA_BUS_FMT_Y8_1X8) { - crop->left &= ~1; - crop->top &= ~1; - } - - crop->left = clamp_t(u32, crop->left, 0, sink->width - CCDC_MIN_WIDTH); - crop->top = clamp_t(u32, crop->top, 0, sink->height - CCDC_MIN_HEIGHT); - - /* The data formatter truncates the number of horizontal output pixels - * to a multiple of 16. To avoid clipping data, allow callers to request - * an output size bigger than the input size up to the nearest multiple - * of 16. - */ - max_width = (sink->width - crop->left + 15) & ~15; - crop->width = clamp_t(u32, crop->width, CCDC_MIN_WIDTH, max_width) - & ~15; - crop->height = clamp_t(u32, crop->height, CCDC_MIN_HEIGHT, - sink->height - crop->top); - - /* Odd width/height values don't make sense for Bayer formats. */ - if (info->flavor != MEDIA_BUS_FMT_Y8_1X8) { - crop->width &= ~1; - crop->height &= ~1; - } -} - -/* - * ccdc_enum_mbus_code - Handle pixel format enumeration - * @sd : pointer to v4l2 subdev structure - * @cfg : V4L2 subdev pad configuration - * @code : pointer to v4l2_subdev_mbus_code_enum structure - * return -EINVAL or zero on success - */ -static int ccdc_enum_mbus_code(struct v4l2_subdev *sd, - struct v4l2_subdev_state *sd_state, - struct v4l2_subdev_mbus_code_enum *code) -{ - struct isp_ccdc_device *ccdc = v4l2_get_subdevdata(sd); - struct v4l2_mbus_framefmt *format; - - switch (code->pad) { - case CCDC_PAD_SINK: - if (code->index >= ARRAY_SIZE(ccdc_fmts)) - return -EINVAL; - - code->code = ccdc_fmts[code->index]; - break; - - case CCDC_PAD_SOURCE_OF: - format = __ccdc_get_format(ccdc, sd_state, code->pad, - code->which); - - if (format->code == MEDIA_BUS_FMT_YUYV8_2X8 || - format->code == MEDIA_BUS_FMT_UYVY8_2X8) { - /* In YUV mode the CCDC can swap bytes. */ - if (code->index == 0) - code->code = MEDIA_BUS_FMT_YUYV8_1X16; - else if (code->index == 1) - code->code = MEDIA_BUS_FMT_UYVY8_1X16; - else - return -EINVAL; - } else { - /* In raw mode, no configurable format confversion is - * available. - */ - if (code->index == 0) - code->code = format->code; - else - return -EINVAL; - } - break; - - case CCDC_PAD_SOURCE_VP: - /* The CCDC supports no configurable format conversion - * compatible with the video port. Enumerate a single output - * format code. - */ - if (code->index != 0) - return -EINVAL; - - format = __ccdc_get_format(ccdc, sd_state, code->pad, - code->which); - - /* A pixel code equal to 0 means that the video port doesn't - * support the input format. Don't enumerate any pixel code. - */ - if (format->code == 0) - return -EINVAL; - - code->code = format->code; - break; - - default: - return -EINVAL; - } - - return 0; -} - -static int ccdc_enum_frame_size(struct v4l2_subdev *sd, - struct v4l2_subdev_state *sd_state, - struct v4l2_subdev_frame_size_enum *fse) -{ - struct isp_ccdc_device *ccdc = v4l2_get_subdevdata(sd); - struct v4l2_mbus_framefmt format; - - if (fse->index != 0) - return -EINVAL; - - format.code = fse->code; - format.width = 1; - format.height = 1; - ccdc_try_format(ccdc, sd_state, fse->pad, &format, fse->which); - fse->min_width = format.width; - fse->min_height = format.height; - - if (format.code != fse->code) - return -EINVAL; - - format.code = fse->code; - format.width = -1; - format.height = -1; - ccdc_try_format(ccdc, sd_state, fse->pad, &format, fse->which); - fse->max_width = format.width; - fse->max_height = format.height; - - return 0; -} - -/* - * ccdc_get_selection - Retrieve a selection rectangle on a pad - * @sd: ISP CCDC V4L2 subdevice - * @cfg: V4L2 subdev pad configuration - * @sel: Selection rectangle - * - * The only supported rectangles are the crop rectangles on the output formatter - * source pad. - * - * Return 0 on success or a negative error code otherwise. - */ -static int ccdc_get_selection(struct v4l2_subdev *sd, - struct v4l2_subdev_state *sd_state, - struct v4l2_subdev_selection *sel) -{ - struct isp_ccdc_device *ccdc = v4l2_get_subdevdata(sd); - struct v4l2_mbus_framefmt *format; - - if (sel->pad != CCDC_PAD_SOURCE_OF) - return -EINVAL; - - switch (sel->target) { - case V4L2_SEL_TGT_CROP_BOUNDS: - sel->r.left = 0; - sel->r.top = 0; - sel->r.width = INT_MAX; - sel->r.height = INT_MAX; - - format = __ccdc_get_format(ccdc, sd_state, CCDC_PAD_SINK, - sel->which); - ccdc_try_crop(ccdc, format, &sel->r); - break; - - case V4L2_SEL_TGT_CROP: - sel->r = *__ccdc_get_crop(ccdc, sd_state, sel->which); - break; - - default: - return -EINVAL; - } - - return 0; -} - -/* - * ccdc_set_selection - Set a selection rectangle on a pad - * @sd: ISP CCDC V4L2 subdevice - * @cfg: V4L2 subdev pad configuration - * @sel: Selection rectangle - * - * The only supported rectangle is the actual crop rectangle on the output - * formatter source pad. - * - * Return 0 on success or a negative error code otherwise. - */ -static int ccdc_set_selection(struct v4l2_subdev *sd, - struct v4l2_subdev_state *sd_state, - struct v4l2_subdev_selection *sel) -{ - struct isp_ccdc_device *ccdc = v4l2_get_subdevdata(sd); - struct v4l2_mbus_framefmt *format; - - if (sel->target != V4L2_SEL_TGT_CROP || - sel->pad != CCDC_PAD_SOURCE_OF) - return -EINVAL; - - /* The crop rectangle can't be changed while streaming. */ - if (ccdc->state != ISP_PIPELINE_STREAM_STOPPED) - return -EBUSY; - - /* Modifying the crop rectangle always changes the format on the source - * pad. If the KEEP_CONFIG flag is set, just return the current crop - * rectangle. - */ - if (sel->flags & V4L2_SEL_FLAG_KEEP_CONFIG) { - sel->r = *__ccdc_get_crop(ccdc, sd_state, sel->which); - return 0; - } - - format = __ccdc_get_format(ccdc, sd_state, CCDC_PAD_SINK, sel->which); - ccdc_try_crop(ccdc, format, &sel->r); - *__ccdc_get_crop(ccdc, sd_state, sel->which) = sel->r; - - /* Update the source format. */ - format = __ccdc_get_format(ccdc, sd_state, CCDC_PAD_SOURCE_OF, - sel->which); - ccdc_try_format(ccdc, sd_state, CCDC_PAD_SOURCE_OF, format, - sel->which); - - return 0; -} - -/* - * ccdc_get_format - Retrieve the video format on a pad - * @sd : ISP CCDC V4L2 subdevice - * @cfg: V4L2 subdev pad configuration - * @fmt: Format - * - * Return 0 on success or -EINVAL if the pad is invalid or doesn't correspond - * to the format type. - */ -static int ccdc_get_format(struct v4l2_subdev *sd, - struct v4l2_subdev_state *sd_state, - struct v4l2_subdev_format *fmt) -{ - struct isp_ccdc_device *ccdc = v4l2_get_subdevdata(sd); - struct v4l2_mbus_framefmt *format; - - format = __ccdc_get_format(ccdc, sd_state, fmt->pad, fmt->which); - if (format == NULL) - return -EINVAL; - - fmt->format = *format; - return 0; -} - -/* - * ccdc_set_format - Set the video format on a pad - * @sd : ISP CCDC V4L2 subdevice - * @cfg: V4L2 subdev pad configuration - * @fmt: Format - * - * Return 0 on success or -EINVAL if the pad is invalid or doesn't correspond - * to the format type. - */ -static int ccdc_set_format(struct v4l2_subdev *sd, - struct v4l2_subdev_state *sd_state, - struct v4l2_subdev_format *fmt) -{ - struct isp_ccdc_device *ccdc = v4l2_get_subdevdata(sd); - struct v4l2_mbus_framefmt *format; - struct v4l2_rect *crop; - - format = __ccdc_get_format(ccdc, sd_state, fmt->pad, fmt->which); - if (format == NULL) - return -EINVAL; - - ccdc_try_format(ccdc, sd_state, fmt->pad, &fmt->format, fmt->which); - *format = fmt->format; - - /* Propagate the format from sink to source */ - if (fmt->pad == CCDC_PAD_SINK) { - /* Reset the crop rectangle. */ - crop = __ccdc_get_crop(ccdc, sd_state, fmt->which); - crop->left = 0; - crop->top = 0; - crop->width = fmt->format.width; - crop->height = fmt->format.height; - - ccdc_try_crop(ccdc, &fmt->format, crop); - - /* Update the source formats. */ - format = __ccdc_get_format(ccdc, sd_state, CCDC_PAD_SOURCE_OF, - fmt->which); - *format = fmt->format; - ccdc_try_format(ccdc, sd_state, CCDC_PAD_SOURCE_OF, format, - fmt->which); - - format = __ccdc_get_format(ccdc, sd_state, CCDC_PAD_SOURCE_VP, - fmt->which); - *format = fmt->format; - ccdc_try_format(ccdc, sd_state, CCDC_PAD_SOURCE_VP, format, - fmt->which); - } - - return 0; -} - -/* - * Decide whether desired output pixel code can be obtained with - * the lane shifter by shifting the input pixel code. - * @in: input pixelcode to shifter - * @out: output pixelcode from shifter - * @additional_shift: # of bits the sensor's LSB is offset from CAMEXT[0] - * - * return true if the combination is possible - * return false otherwise - */ -static bool ccdc_is_shiftable(u32 in, u32 out, unsigned int additional_shift) -{ - const struct isp_format_info *in_info, *out_info; - - if (in == out) - return true; - - in_info = omap3isp_video_format_info(in); - out_info = omap3isp_video_format_info(out); - - if ((in_info->flavor == 0) || (out_info->flavor == 0)) - return false; - - if (in_info->flavor != out_info->flavor) - return false; - - return in_info->width - out_info->width + additional_shift <= 6; -} - -static int ccdc_link_validate(struct v4l2_subdev *sd, - struct media_link *link, - struct v4l2_subdev_format *source_fmt, - struct v4l2_subdev_format *sink_fmt) -{ - struct isp_ccdc_device *ccdc = v4l2_get_subdevdata(sd); - unsigned long parallel_shift; - - /* Check if the two ends match */ - if (source_fmt->format.width != sink_fmt->format.width || - source_fmt->format.height != sink_fmt->format.height) - return -EPIPE; - - /* We've got a parallel sensor here. */ - if (ccdc->input == CCDC_INPUT_PARALLEL) { - struct v4l2_subdev *sd = - media_entity_to_v4l2_subdev(link->source->entity); - struct isp_bus_cfg *bus_cfg = v4l2_subdev_to_bus_cfg(sd); - - parallel_shift = bus_cfg->bus.parallel.data_lane_shift; - } else { - parallel_shift = 0; - } - - /* Lane shifter may be used to drop bits on CCDC sink pad */ - if (!ccdc_is_shiftable(source_fmt->format.code, - sink_fmt->format.code, parallel_shift)) - return -EPIPE; - - return 0; -} - -/* - * ccdc_init_formats - Initialize formats on all pads - * @sd: ISP CCDC V4L2 subdevice - * @fh: V4L2 subdev file handle - * - * Initialize all pad formats with default values. If fh is not NULL, try - * formats are initialized on the file handle. Otherwise active formats are - * initialized on the device. - */ -static int ccdc_init_formats(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh) -{ - struct v4l2_subdev_format format; - - memset(&format, 0, sizeof(format)); - format.pad = CCDC_PAD_SINK; - format.which = fh ? V4L2_SUBDEV_FORMAT_TRY : V4L2_SUBDEV_FORMAT_ACTIVE; - format.format.code = MEDIA_BUS_FMT_SGRBG10_1X10; - format.format.width = 4096; - format.format.height = 4096; - ccdc_set_format(sd, fh ? fh->state : NULL, &format); - - return 0; -} - -/* V4L2 subdev core operations */ -static const struct v4l2_subdev_core_ops ccdc_v4l2_core_ops = { - .ioctl = ccdc_ioctl, - .subscribe_event = ccdc_subscribe_event, - .unsubscribe_event = ccdc_unsubscribe_event, -}; - -/* V4L2 subdev video operations */ -static const struct v4l2_subdev_video_ops ccdc_v4l2_video_ops = { - .s_stream = ccdc_set_stream, -}; - -/* V4L2 subdev pad operations */ -static const struct v4l2_subdev_pad_ops ccdc_v4l2_pad_ops = { - .enum_mbus_code = ccdc_enum_mbus_code, - .enum_frame_size = ccdc_enum_frame_size, - .get_fmt = ccdc_get_format, - .set_fmt = ccdc_set_format, - .get_selection = ccdc_get_selection, - .set_selection = ccdc_set_selection, - .link_validate = ccdc_link_validate, -}; - -/* V4L2 subdev operations */ -static const struct v4l2_subdev_ops ccdc_v4l2_ops = { - .core = &ccdc_v4l2_core_ops, - .video = &ccdc_v4l2_video_ops, - .pad = &ccdc_v4l2_pad_ops, -}; - -/* V4L2 subdev internal operations */ -static const struct v4l2_subdev_internal_ops ccdc_v4l2_internal_ops = { - .open = ccdc_init_formats, -}; - -/* ----------------------------------------------------------------------------- - * Media entity operations - */ - -/* - * ccdc_link_setup - Setup CCDC connections - * @entity: CCDC media entity - * @local: Pad at the local end of the link - * @remote: Pad at the remote end of the link - * @flags: Link flags - * - * return -EINVAL or zero on success - */ -static int ccdc_link_setup(struct media_entity *entity, - const struct media_pad *local, - const struct media_pad *remote, u32 flags) -{ - struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity); - struct isp_ccdc_device *ccdc = v4l2_get_subdevdata(sd); - struct isp_device *isp = to_isp_device(ccdc); - unsigned int index = local->index; - - /* FIXME: this is actually a hack! */ - if (is_media_entity_v4l2_subdev(remote->entity)) - index |= 2 << 16; - - switch (index) { - case CCDC_PAD_SINK | 2 << 16: - /* Read from the sensor (parallel interface), CCP2, CSI2a or - * CSI2c. - */ - if (!(flags & MEDIA_LNK_FL_ENABLED)) { - ccdc->input = CCDC_INPUT_NONE; - break; - } - - if (ccdc->input != CCDC_INPUT_NONE) - return -EBUSY; - - if (remote->entity == &isp->isp_ccp2.subdev.entity) - ccdc->input = CCDC_INPUT_CCP2B; - else if (remote->entity == &isp->isp_csi2a.subdev.entity) - ccdc->input = CCDC_INPUT_CSI2A; - else if (remote->entity == &isp->isp_csi2c.subdev.entity) - ccdc->input = CCDC_INPUT_CSI2C; - else - ccdc->input = CCDC_INPUT_PARALLEL; - - break; - - /* - * The ISP core doesn't support pipelines with multiple video outputs. - * Revisit this when it will be implemented, and return -EBUSY for now. - */ - - case CCDC_PAD_SOURCE_VP | 2 << 16: - /* Write to preview engine, histogram and H3A. When none of - * those links are active, the video port can be disabled. - */ - if (flags & MEDIA_LNK_FL_ENABLED) { - if (ccdc->output & ~CCDC_OUTPUT_PREVIEW) - return -EBUSY; - ccdc->output |= CCDC_OUTPUT_PREVIEW; - } else { - ccdc->output &= ~CCDC_OUTPUT_PREVIEW; - } - break; - - case CCDC_PAD_SOURCE_OF: - /* Write to memory */ - if (flags & MEDIA_LNK_FL_ENABLED) { - if (ccdc->output & ~CCDC_OUTPUT_MEMORY) - return -EBUSY; - ccdc->output |= CCDC_OUTPUT_MEMORY; - } else { - ccdc->output &= ~CCDC_OUTPUT_MEMORY; - } - break; - - case CCDC_PAD_SOURCE_OF | 2 << 16: - /* Write to resizer */ - if (flags & MEDIA_LNK_FL_ENABLED) { - if (ccdc->output & ~CCDC_OUTPUT_RESIZER) - return -EBUSY; - ccdc->output |= CCDC_OUTPUT_RESIZER; - } else { - ccdc->output &= ~CCDC_OUTPUT_RESIZER; - } - break; - - default: - return -EINVAL; - } - - return 0; -} - -/* media operations */ -static const struct media_entity_operations ccdc_media_ops = { - .link_setup = ccdc_link_setup, - .link_validate = v4l2_subdev_link_validate, -}; - -void omap3isp_ccdc_unregister_entities(struct isp_ccdc_device *ccdc) -{ - v4l2_device_unregister_subdev(&ccdc->subdev); - omap3isp_video_unregister(&ccdc->video_out); -} - -int omap3isp_ccdc_register_entities(struct isp_ccdc_device *ccdc, - struct v4l2_device *vdev) -{ - int ret; - - /* Register the subdev and video node. */ - ccdc->subdev.dev = vdev->mdev->dev; - ret = v4l2_device_register_subdev(vdev, &ccdc->subdev); - if (ret < 0) - goto error; - - ret = omap3isp_video_register(&ccdc->video_out, vdev); - if (ret < 0) - goto error; - - return 0; - -error: - omap3isp_ccdc_unregister_entities(ccdc); - return ret; -} - -/* ----------------------------------------------------------------------------- - * ISP CCDC initialisation and cleanup - */ - -/* - * ccdc_init_entities - Initialize V4L2 subdev and media entity - * @ccdc: ISP CCDC module - * - * Return 0 on success and a negative error code on failure. - */ -static int ccdc_init_entities(struct isp_ccdc_device *ccdc) -{ - struct v4l2_subdev *sd = &ccdc->subdev; - struct media_pad *pads = ccdc->pads; - struct media_entity *me = &sd->entity; - int ret; - - ccdc->input = CCDC_INPUT_NONE; - - v4l2_subdev_init(sd, &ccdc_v4l2_ops); - sd->internal_ops = &ccdc_v4l2_internal_ops; - strscpy(sd->name, "OMAP3 ISP CCDC", sizeof(sd->name)); - sd->grp_id = 1 << 16; /* group ID for isp subdevs */ - v4l2_set_subdevdata(sd, ccdc); - sd->flags |= V4L2_SUBDEV_FL_HAS_EVENTS | V4L2_SUBDEV_FL_HAS_DEVNODE; - - pads[CCDC_PAD_SINK].flags = MEDIA_PAD_FL_SINK - | MEDIA_PAD_FL_MUST_CONNECT; - pads[CCDC_PAD_SOURCE_VP].flags = MEDIA_PAD_FL_SOURCE; - pads[CCDC_PAD_SOURCE_OF].flags = MEDIA_PAD_FL_SOURCE; - - me->ops = &ccdc_media_ops; - ret = media_entity_pads_init(me, CCDC_PADS_NUM, pads); - if (ret < 0) - return ret; - - ccdc_init_formats(sd, NULL); - - ccdc->video_out.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; - ccdc->video_out.ops = &ccdc_video_ops; - ccdc->video_out.isp = to_isp_device(ccdc); - ccdc->video_out.capture_mem = PAGE_ALIGN(4096 * 4096) * 3; - ccdc->video_out.bpl_alignment = 32; - - ret = omap3isp_video_init(&ccdc->video_out, "CCDC"); - if (ret < 0) - goto error; - - return 0; - -error: - media_entity_cleanup(me); - return ret; -} - -/* - * omap3isp_ccdc_init - CCDC module initialization. - * @isp: Device pointer specific to the OMAP3 ISP. - * - * TODO: Get the initialisation values from platform data. - * - * Return 0 on success or a negative error code otherwise. - */ -int omap3isp_ccdc_init(struct isp_device *isp) -{ - struct isp_ccdc_device *ccdc = &isp->isp_ccdc; - int ret; - - spin_lock_init(&ccdc->lock); - init_waitqueue_head(&ccdc->wait); - mutex_init(&ccdc->ioctl_lock); - - ccdc->stopping = CCDC_STOP_NOT_REQUESTED; - - INIT_WORK(&ccdc->lsc.table_work, ccdc_lsc_free_table_work); - ccdc->lsc.state = LSC_STATE_STOPPED; - INIT_LIST_HEAD(&ccdc->lsc.free_queue); - spin_lock_init(&ccdc->lsc.req_lock); - - ccdc->clamp.oblen = 0; - ccdc->clamp.dcsubval = 0; - - ccdc->update = OMAP3ISP_CCDC_BLCLAMP; - ccdc_apply_controls(ccdc); - - ret = ccdc_init_entities(ccdc); - if (ret < 0) { - mutex_destroy(&ccdc->ioctl_lock); - return ret; - } - - return 0; -} - -/* - * omap3isp_ccdc_cleanup - CCDC module cleanup. - * @isp: Device pointer specific to the OMAP3 ISP. - */ -void omap3isp_ccdc_cleanup(struct isp_device *isp) -{ - struct isp_ccdc_device *ccdc = &isp->isp_ccdc; - - omap3isp_video_cleanup(&ccdc->video_out); - media_entity_cleanup(&ccdc->subdev.entity); - - /* Free LSC requests. As the CCDC is stopped there's no active request, - * so only the pending request and the free queue need to be handled. - */ - ccdc_lsc_free_request(ccdc, ccdc->lsc.request); - cancel_work_sync(&ccdc->lsc.table_work); - ccdc_lsc_free_queue(ccdc, &ccdc->lsc.free_queue); - - if (ccdc->fpc.addr != NULL) - dma_free_coherent(isp->dev, ccdc->fpc.fpnum * 4, ccdc->fpc.addr, - ccdc->fpc.dma); - - mutex_destroy(&ccdc->ioctl_lock); -} |