// SPDX-License-Identifier: GPL-2.0+
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/*
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* TI OMAP4 ISS V4L2 Driver - ISP IPIPEIF module
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*
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* Copyright (C) 2012 Texas Instruments, Inc.
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*
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* Author: Sergio Aguirre <sergio.a.aguirre@gmail.com>
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*/
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#include <linux/module.h>
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#include <linux/uaccess.h>
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#include <linux/delay.h>
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#include <linux/device.h>
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#include <linux/dma-mapping.h>
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#include <linux/mm.h>
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#include <linux/sched.h>
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#include "iss.h"
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#include "iss_regs.h"
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#include "iss_ipipeif.h"
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static const unsigned int ipipeif_fmts[] = {
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MEDIA_BUS_FMT_SGRBG10_1X10,
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MEDIA_BUS_FMT_SRGGB10_1X10,
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MEDIA_BUS_FMT_SBGGR10_1X10,
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MEDIA_BUS_FMT_SGBRG10_1X10,
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MEDIA_BUS_FMT_UYVY8_1X16,
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MEDIA_BUS_FMT_YUYV8_1X16,
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};
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/*
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* ipipeif_print_status - Print current IPIPEIF Module register values.
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* @ipipeif: Pointer to ISS ISP IPIPEIF device.
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*
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* Also prints other debug information stored in the IPIPEIF module.
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*/
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#define IPIPEIF_PRINT_REGISTER(iss, name)\
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dev_dbg(iss->dev, "###IPIPEIF " #name "=0x%08x\n", \
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iss_reg_read(iss, OMAP4_ISS_MEM_ISP_IPIPEIF, IPIPEIF_##name))
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#define ISIF_PRINT_REGISTER(iss, name)\
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dev_dbg(iss->dev, "###ISIF " #name "=0x%08x\n", \
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iss_reg_read(iss, OMAP4_ISS_MEM_ISP_ISIF, ISIF_##name))
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#define ISP5_PRINT_REGISTER(iss, name)\
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dev_dbg(iss->dev, "###ISP5 " #name "=0x%08x\n", \
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iss_reg_read(iss, OMAP4_ISS_MEM_ISP_SYS1, ISP5_##name))
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static void ipipeif_print_status(struct iss_ipipeif_device *ipipeif)
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{
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struct iss_device *iss = to_iss_device(ipipeif);
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dev_dbg(iss->dev, "-------------IPIPEIF Register dump-------------\n");
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IPIPEIF_PRINT_REGISTER(iss, CFG1);
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IPIPEIF_PRINT_REGISTER(iss, CFG2);
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ISIF_PRINT_REGISTER(iss, SYNCEN);
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ISIF_PRINT_REGISTER(iss, CADU);
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ISIF_PRINT_REGISTER(iss, CADL);
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ISIF_PRINT_REGISTER(iss, MODESET);
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ISIF_PRINT_REGISTER(iss, CCOLP);
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ISIF_PRINT_REGISTER(iss, SPH);
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ISIF_PRINT_REGISTER(iss, LNH);
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ISIF_PRINT_REGISTER(iss, LNV);
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ISIF_PRINT_REGISTER(iss, VDINT(0));
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ISIF_PRINT_REGISTER(iss, HSIZE);
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ISP5_PRINT_REGISTER(iss, SYSCONFIG);
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ISP5_PRINT_REGISTER(iss, CTRL);
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ISP5_PRINT_REGISTER(iss, IRQSTATUS(0));
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ISP5_PRINT_REGISTER(iss, IRQENABLE_SET(0));
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ISP5_PRINT_REGISTER(iss, IRQENABLE_CLR(0));
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dev_dbg(iss->dev, "-----------------------------------------------\n");
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}
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static void ipipeif_write_enable(struct iss_ipipeif_device *ipipeif, u8 enable)
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{
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struct iss_device *iss = to_iss_device(ipipeif);
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iss_reg_update(iss, OMAP4_ISS_MEM_ISP_ISIF, ISIF_SYNCEN,
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ISIF_SYNCEN_DWEN, enable ? ISIF_SYNCEN_DWEN : 0);
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}
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/*
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* ipipeif_enable - Enable/Disable IPIPEIF.
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* @enable: enable flag
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*
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*/
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static void ipipeif_enable(struct iss_ipipeif_device *ipipeif, u8 enable)
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{
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struct iss_device *iss = to_iss_device(ipipeif);
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iss_reg_update(iss, OMAP4_ISS_MEM_ISP_ISIF, ISIF_SYNCEN,
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ISIF_SYNCEN_SYEN, enable ? ISIF_SYNCEN_SYEN : 0);
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}
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/* -----------------------------------------------------------------------------
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* Format- and pipeline-related configuration helpers
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*/
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/*
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* ipipeif_set_outaddr - Set memory address to save output image
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* @ipipeif: Pointer to ISP IPIPEIF device.
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* @addr: 32-bit memory address aligned on 32 byte boundary.
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*
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* Sets the memory address where the output will be saved.
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*/
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static void ipipeif_set_outaddr(struct iss_ipipeif_device *ipipeif, u32 addr)
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{
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struct iss_device *iss = to_iss_device(ipipeif);
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/* Save address split in Base Address H & L */
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iss_reg_write(iss, OMAP4_ISS_MEM_ISP_ISIF, ISIF_CADU,
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(addr >> (16 + 5)) & ISIF_CADU_MASK);
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iss_reg_write(iss, OMAP4_ISS_MEM_ISP_ISIF, ISIF_CADL,
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(addr >> 5) & ISIF_CADL_MASK);
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}
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static void ipipeif_configure(struct iss_ipipeif_device *ipipeif)
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{
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struct iss_device *iss = to_iss_device(ipipeif);
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const struct iss_format_info *info;
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struct v4l2_mbus_framefmt *format;
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u32 isif_ccolp = 0;
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omap4iss_configure_bridge(iss, ipipeif->input);
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/* IPIPEIF_PAD_SINK */
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format = &ipipeif->formats[IPIPEIF_PAD_SINK];
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/* IPIPEIF with YUV422 input from ISIF */
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iss_reg_clr(iss, OMAP4_ISS_MEM_ISP_IPIPEIF, IPIPEIF_CFG1,
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IPIPEIF_CFG1_INPSRC1_MASK | IPIPEIF_CFG1_INPSRC2_MASK);
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/* Select ISIF/IPIPEIF input format */
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switch (format->code) {
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case MEDIA_BUS_FMT_UYVY8_1X16:
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case MEDIA_BUS_FMT_YUYV8_1X16:
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iss_reg_update(iss, OMAP4_ISS_MEM_ISP_ISIF, ISIF_MODESET,
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ISIF_MODESET_CCDMD | ISIF_MODESET_INPMOD_MASK |
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ISIF_MODESET_CCDW_MASK,
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ISIF_MODESET_INPMOD_YCBCR16);
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iss_reg_update(iss, OMAP4_ISS_MEM_ISP_IPIPEIF, IPIPEIF_CFG2,
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IPIPEIF_CFG2_YUV8, IPIPEIF_CFG2_YUV16);
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break;
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case MEDIA_BUS_FMT_SGRBG10_1X10:
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isif_ccolp = ISIF_CCOLP_CP0_F0_GR |
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ISIF_CCOLP_CP1_F0_R |
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ISIF_CCOLP_CP2_F0_B |
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ISIF_CCOLP_CP3_F0_GB;
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goto cont_raw;
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case MEDIA_BUS_FMT_SRGGB10_1X10:
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isif_ccolp = ISIF_CCOLP_CP0_F0_R |
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ISIF_CCOLP_CP1_F0_GR |
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ISIF_CCOLP_CP2_F0_GB |
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ISIF_CCOLP_CP3_F0_B;
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goto cont_raw;
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case MEDIA_BUS_FMT_SBGGR10_1X10:
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isif_ccolp = ISIF_CCOLP_CP0_F0_B |
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ISIF_CCOLP_CP1_F0_GB |
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ISIF_CCOLP_CP2_F0_GR |
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ISIF_CCOLP_CP3_F0_R;
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goto cont_raw;
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case MEDIA_BUS_FMT_SGBRG10_1X10:
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isif_ccolp = ISIF_CCOLP_CP0_F0_GB |
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ISIF_CCOLP_CP1_F0_B |
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ISIF_CCOLP_CP2_F0_R |
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ISIF_CCOLP_CP3_F0_GR;
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cont_raw:
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iss_reg_clr(iss, OMAP4_ISS_MEM_ISP_IPIPEIF, IPIPEIF_CFG2,
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IPIPEIF_CFG2_YUV16);
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iss_reg_update(iss, OMAP4_ISS_MEM_ISP_ISIF, ISIF_MODESET,
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ISIF_MODESET_CCDMD | ISIF_MODESET_INPMOD_MASK |
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ISIF_MODESET_CCDW_MASK, ISIF_MODESET_INPMOD_RAW |
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ISIF_MODESET_CCDW_2BIT);
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info = omap4iss_video_format_info(format->code);
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iss_reg_update(iss, OMAP4_ISS_MEM_ISP_ISIF, ISIF_CGAMMAWD,
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ISIF_CGAMMAWD_GWDI_MASK,
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ISIF_CGAMMAWD_GWDI(info->bpp));
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/* Set RAW Bayer pattern */
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iss_reg_write(iss, OMAP4_ISS_MEM_ISP_ISIF, ISIF_CCOLP,
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isif_ccolp);
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break;
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}
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iss_reg_write(iss, OMAP4_ISS_MEM_ISP_ISIF, ISIF_SPH, 0 & ISIF_SPH_MASK);
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iss_reg_write(iss, OMAP4_ISS_MEM_ISP_ISIF, ISIF_LNH,
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(format->width - 1) & ISIF_LNH_MASK);
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iss_reg_write(iss, OMAP4_ISS_MEM_ISP_ISIF, ISIF_LNV,
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(format->height - 1) & ISIF_LNV_MASK);
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/* Generate ISIF0 on the last line of the image */
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iss_reg_write(iss, OMAP4_ISS_MEM_ISP_ISIF, ISIF_VDINT(0),
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format->height - 1);
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/* IPIPEIF_PAD_SOURCE_ISIF_SF */
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format = &ipipeif->formats[IPIPEIF_PAD_SOURCE_ISIF_SF];
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iss_reg_write(iss, OMAP4_ISS_MEM_ISP_ISIF, ISIF_HSIZE,
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(ipipeif->video_out.bpl_value >> 5) &
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ISIF_HSIZE_HSIZE_MASK);
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/* IPIPEIF_PAD_SOURCE_VP */
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/* Do nothing? */
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}
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/* -----------------------------------------------------------------------------
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* Interrupt handling
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*/
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static void ipipeif_isr_buffer(struct iss_ipipeif_device *ipipeif)
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{
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struct iss_buffer *buffer;
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/* The ISIF generates VD0 interrupts even when writes are disabled.
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* deal with it anyway). Disabling the ISIF when no buffer is available
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* is thus not be enough, we need to handle the situation explicitly.
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*/
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if (list_empty(&ipipeif->video_out.dmaqueue))
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return;
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ipipeif_write_enable(ipipeif, 0);
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buffer = omap4iss_video_buffer_next(&ipipeif->video_out);
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if (!buffer)
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return;
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ipipeif_set_outaddr(ipipeif, buffer->iss_addr);
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ipipeif_write_enable(ipipeif, 1);
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}
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/*
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* omap4iss_ipipeif_isr - Configure ipipeif during interframe time.
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* @ipipeif: Pointer to ISP IPIPEIF device.
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* @events: IPIPEIF events
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*/
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void omap4iss_ipipeif_isr(struct iss_ipipeif_device *ipipeif, u32 events)
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{
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if (omap4iss_module_sync_is_stopping(&ipipeif->wait,
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&ipipeif->stopping))
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return;
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if ((events & ISP5_IRQ_ISIF_INT(0)) &&
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(ipipeif->output & IPIPEIF_OUTPUT_MEMORY))
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ipipeif_isr_buffer(ipipeif);
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}
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/* -----------------------------------------------------------------------------
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* ISP video operations
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*/
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static int ipipeif_video_queue(struct iss_video *video,
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struct iss_buffer *buffer)
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{
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struct iss_ipipeif_device *ipipeif = container_of(video,
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struct iss_ipipeif_device, video_out);
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if (!(ipipeif->output & IPIPEIF_OUTPUT_MEMORY))
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return -ENODEV;
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ipipeif_set_outaddr(ipipeif, buffer->iss_addr);
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/*
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* If streaming was enabled before there was a buffer queued
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* or underrun happened in the ISR, the hardware was not enabled
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* and DMA queue flag ISS_VIDEO_DMAQUEUE_UNDERRUN is still set.
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* Enable it now.
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*/
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if (video->dmaqueue_flags & ISS_VIDEO_DMAQUEUE_UNDERRUN) {
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if (ipipeif->output & IPIPEIF_OUTPUT_MEMORY)
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ipipeif_write_enable(ipipeif, 1);
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ipipeif_enable(ipipeif, 1);
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iss_video_dmaqueue_flags_clr(video);
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}
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return 0;
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}
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static const struct iss_video_operations ipipeif_video_ops = {
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.queue = ipipeif_video_queue,
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};
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/* -----------------------------------------------------------------------------
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* V4L2 subdev operations
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*/
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#define IPIPEIF_DRV_SUBCLK_MASK (OMAP4_ISS_ISP_SUBCLK_IPIPEIF |\
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OMAP4_ISS_ISP_SUBCLK_ISIF)
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/*
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* ipipeif_set_stream - Enable/Disable streaming on the IPIPEIF module
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* @sd: ISP IPIPEIF V4L2 subdevice
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* @enable: Enable/disable stream
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*/
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static int ipipeif_set_stream(struct v4l2_subdev *sd, int enable)
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{
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struct iss_ipipeif_device *ipipeif = v4l2_get_subdevdata(sd);
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struct iss_device *iss = to_iss_device(ipipeif);
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struct iss_video *video_out = &ipipeif->video_out;
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int ret = 0;
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if (ipipeif->state == ISS_PIPELINE_STREAM_STOPPED) {
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if (enable == ISS_PIPELINE_STREAM_STOPPED)
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return 0;
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omap4iss_isp_subclk_enable(iss, IPIPEIF_DRV_SUBCLK_MASK);
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}
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switch (enable) {
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case ISS_PIPELINE_STREAM_CONTINUOUS:
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ipipeif_configure(ipipeif);
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ipipeif_print_status(ipipeif);
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/*
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* When outputting to memory with no buffer available, let the
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* buffer queue handler start the hardware. A DMA queue flag
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* ISS_VIDEO_DMAQUEUE_QUEUED will be set as soon as there is
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* a buffer available.
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*/
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if (ipipeif->output & IPIPEIF_OUTPUT_MEMORY &&
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!(video_out->dmaqueue_flags & ISS_VIDEO_DMAQUEUE_QUEUED))
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break;
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atomic_set(&ipipeif->stopping, 0);
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if (ipipeif->output & IPIPEIF_OUTPUT_MEMORY)
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ipipeif_write_enable(ipipeif, 1);
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ipipeif_enable(ipipeif, 1);
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iss_video_dmaqueue_flags_clr(video_out);
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break;
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case ISS_PIPELINE_STREAM_STOPPED:
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if (ipipeif->state == ISS_PIPELINE_STREAM_STOPPED)
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return 0;
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if (omap4iss_module_sync_idle(&sd->entity, &ipipeif->wait,
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&ipipeif->stopping))
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ret = -ETIMEDOUT;
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if (ipipeif->output & IPIPEIF_OUTPUT_MEMORY)
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ipipeif_write_enable(ipipeif, 0);
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ipipeif_enable(ipipeif, 0);
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omap4iss_isp_subclk_disable(iss, IPIPEIF_DRV_SUBCLK_MASK);
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iss_video_dmaqueue_flags_clr(video_out);
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break;
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}
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ipipeif->state = enable;
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return ret;
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}
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static struct v4l2_mbus_framefmt *
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__ipipeif_get_format(struct iss_ipipeif_device *ipipeif,
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struct v4l2_subdev_pad_config *cfg, unsigned int pad,
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enum v4l2_subdev_format_whence which)
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{
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if (which == V4L2_SUBDEV_FORMAT_TRY)
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return v4l2_subdev_get_try_format(&ipipeif->subdev, cfg, pad);
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return &ipipeif->formats[pad];
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}
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/*
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* ipipeif_try_format - Try video format on a pad
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* @ipipeif: ISS IPIPEIF device
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* @cfg: V4L2 subdev pad config
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* @pad: Pad number
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* @fmt: Format
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*/
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static void
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ipipeif_try_format(struct iss_ipipeif_device *ipipeif,
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struct v4l2_subdev_pad_config *cfg, unsigned int pad,
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struct v4l2_mbus_framefmt *fmt,
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enum v4l2_subdev_format_whence which)
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{
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struct v4l2_mbus_framefmt *format;
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unsigned int width = fmt->width;
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unsigned int height = fmt->height;
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unsigned int i;
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switch (pad) {
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case IPIPEIF_PAD_SINK:
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/* TODO: If the IPIPEIF output formatter pad is connected
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* directly to the resizer, only YUV formats can be used.
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*/
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for (i = 0; i < ARRAY_SIZE(ipipeif_fmts); i++) {
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if (fmt->code == ipipeif_fmts[i])
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break;
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}
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/* If not found, use SGRBG10 as default */
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if (i >= ARRAY_SIZE(ipipeif_fmts))
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fmt->code = MEDIA_BUS_FMT_SGRBG10_1X10;
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/* Clamp the input size. */
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fmt->width = clamp_t(u32, width, 1, 8192);
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fmt->height = clamp_t(u32, height, 1, 8192);
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break;
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case IPIPEIF_PAD_SOURCE_ISIF_SF:
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format = __ipipeif_get_format(ipipeif, cfg, IPIPEIF_PAD_SINK,
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which);
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memcpy(fmt, format, sizeof(*fmt));
|
|
/* The data formatter truncates the number of horizontal output
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* pixels to a multiple of 16. To avoid clipping data, allow
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* callers to request an output size bigger than the input size
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* up to the nearest multiple of 16.
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*/
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fmt->width = clamp_t(u32, width, 32, (fmt->width + 15) & ~15);
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fmt->width &= ~15;
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fmt->height = clamp_t(u32, height, 32, fmt->height);
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break;
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case IPIPEIF_PAD_SOURCE_VP:
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format = __ipipeif_get_format(ipipeif, cfg, IPIPEIF_PAD_SINK,
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which);
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memcpy(fmt, format, sizeof(*fmt));
|
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fmt->width = clamp_t(u32, width, 32, fmt->width);
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fmt->height = clamp_t(u32, height, 32, fmt->height);
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break;
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}
|
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/* Data is written to memory unpacked, each 10-bit or 12-bit pixel is
|
* stored on 2 bytes.
|
*/
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fmt->colorspace = V4L2_COLORSPACE_SRGB;
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fmt->field = V4L2_FIELD_NONE;
|
}
|
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/*
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* ipipeif_enum_mbus_code - Handle pixel format enumeration
|
* @sd : pointer to v4l2 subdev structure
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* @cfg : V4L2 subdev pad config
|
* @code : pointer to v4l2_subdev_mbus_code_enum structure
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* return -EINVAL or zero on success
|
*/
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static int ipipeif_enum_mbus_code(struct v4l2_subdev *sd,
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struct v4l2_subdev_pad_config *cfg,
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struct v4l2_subdev_mbus_code_enum *code)
|
{
|
struct iss_ipipeif_device *ipipeif = v4l2_get_subdevdata(sd);
|
struct v4l2_mbus_framefmt *format;
|
|
switch (code->pad) {
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case IPIPEIF_PAD_SINK:
|
if (code->index >= ARRAY_SIZE(ipipeif_fmts))
|
return -EINVAL;
|
|
code->code = ipipeif_fmts[code->index];
|
break;
|
|
case IPIPEIF_PAD_SOURCE_ISIF_SF:
|
case IPIPEIF_PAD_SOURCE_VP:
|
/* No format conversion inside IPIPEIF */
|
if (code->index != 0)
|
return -EINVAL;
|
|
format = __ipipeif_get_format(ipipeif, cfg, IPIPEIF_PAD_SINK,
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code->which);
|
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code->code = format->code;
|
break;
|
|
default:
|
return -EINVAL;
|
}
|
|
return 0;
|
}
|
|
static int ipipeif_enum_frame_size(struct v4l2_subdev *sd,
|
struct v4l2_subdev_pad_config *cfg,
|
struct v4l2_subdev_frame_size_enum *fse)
|
{
|
struct iss_ipipeif_device *ipipeif = 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;
|
ipipeif_try_format(ipipeif, cfg, 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;
|
ipipeif_try_format(ipipeif, cfg, fse->pad, &format, fse->which);
|
fse->max_width = format.width;
|
fse->max_height = format.height;
|
|
return 0;
|
}
|
|
/*
|
* ipipeif_get_format - Retrieve the video format on a pad
|
* @sd : ISP IPIPEIF V4L2 subdevice
|
* @cfg: V4L2 subdev pad config
|
* @fmt: Format
|
*
|
* Return 0 on success or -EINVAL if the pad is invalid or doesn't correspond
|
* to the format type.
|
*/
|
static int ipipeif_get_format(struct v4l2_subdev *sd,
|
struct v4l2_subdev_pad_config *cfg,
|
struct v4l2_subdev_format *fmt)
|
{
|
struct iss_ipipeif_device *ipipeif = v4l2_get_subdevdata(sd);
|
struct v4l2_mbus_framefmt *format;
|
|
format = __ipipeif_get_format(ipipeif, cfg, fmt->pad, fmt->which);
|
if (!format)
|
return -EINVAL;
|
|
fmt->format = *format;
|
return 0;
|
}
|
|
/*
|
* ipipeif_set_format - Set the video format on a pad
|
* @sd : ISP IPIPEIF V4L2 subdevice
|
* @cfg: V4L2 subdev pad config
|
* @fmt: Format
|
*
|
* Return 0 on success or -EINVAL if the pad is invalid or doesn't correspond
|
* to the format type.
|
*/
|
static int ipipeif_set_format(struct v4l2_subdev *sd,
|
struct v4l2_subdev_pad_config *cfg,
|
struct v4l2_subdev_format *fmt)
|
{
|
struct iss_ipipeif_device *ipipeif = v4l2_get_subdevdata(sd);
|
struct v4l2_mbus_framefmt *format;
|
|
format = __ipipeif_get_format(ipipeif, cfg, fmt->pad, fmt->which);
|
if (!format)
|
return -EINVAL;
|
|
ipipeif_try_format(ipipeif, cfg, fmt->pad, &fmt->format, fmt->which);
|
*format = fmt->format;
|
|
/* Propagate the format from sink to source */
|
if (fmt->pad == IPIPEIF_PAD_SINK) {
|
format = __ipipeif_get_format(ipipeif, cfg,
|
IPIPEIF_PAD_SOURCE_ISIF_SF,
|
fmt->which);
|
*format = fmt->format;
|
ipipeif_try_format(ipipeif, cfg, IPIPEIF_PAD_SOURCE_ISIF_SF,
|
format, fmt->which);
|
|
format = __ipipeif_get_format(ipipeif, cfg,
|
IPIPEIF_PAD_SOURCE_VP,
|
fmt->which);
|
*format = fmt->format;
|
ipipeif_try_format(ipipeif, cfg, IPIPEIF_PAD_SOURCE_VP, format,
|
fmt->which);
|
}
|
|
return 0;
|
}
|
|
static int ipipeif_link_validate(struct v4l2_subdev *sd,
|
struct media_link *link,
|
struct v4l2_subdev_format *source_fmt,
|
struct v4l2_subdev_format *sink_fmt)
|
{
|
/* 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;
|
|
if (source_fmt->format.code != sink_fmt->format.code)
|
return -EPIPE;
|
|
return 0;
|
}
|
|
/*
|
* ipipeif_init_formats - Initialize formats on all pads
|
* @sd: ISP IPIPEIF 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 ipipeif_init_formats(struct v4l2_subdev *sd,
|
struct v4l2_subdev_fh *fh)
|
{
|
struct v4l2_subdev_format format;
|
|
memset(&format, 0, sizeof(format));
|
format.pad = IPIPEIF_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;
|
ipipeif_set_format(sd, fh ? fh->pad : NULL, &format);
|
|
return 0;
|
}
|
|
/* V4L2 subdev video operations */
|
static const struct v4l2_subdev_video_ops ipipeif_v4l2_video_ops = {
|
.s_stream = ipipeif_set_stream,
|
};
|
|
/* V4L2 subdev pad operations */
|
static const struct v4l2_subdev_pad_ops ipipeif_v4l2_pad_ops = {
|
.enum_mbus_code = ipipeif_enum_mbus_code,
|
.enum_frame_size = ipipeif_enum_frame_size,
|
.get_fmt = ipipeif_get_format,
|
.set_fmt = ipipeif_set_format,
|
.link_validate = ipipeif_link_validate,
|
};
|
|
/* V4L2 subdev operations */
|
static const struct v4l2_subdev_ops ipipeif_v4l2_ops = {
|
.video = &ipipeif_v4l2_video_ops,
|
.pad = &ipipeif_v4l2_pad_ops,
|
};
|
|
/* V4L2 subdev internal operations */
|
static const struct v4l2_subdev_internal_ops ipipeif_v4l2_internal_ops = {
|
.open = ipipeif_init_formats,
|
};
|
|
/* -----------------------------------------------------------------------------
|
* Media entity operations
|
*/
|
|
/*
|
* ipipeif_link_setup - Setup IPIPEIF connections
|
* @entity: IPIPEIF 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 ipipeif_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 iss_ipipeif_device *ipipeif = v4l2_get_subdevdata(sd);
|
struct iss_device *iss = to_iss_device(ipipeif);
|
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 IPIPEIF_PAD_SINK | 2 << 16:
|
/* Read from the sensor CSI2a or CSI2b. */
|
if (!(flags & MEDIA_LNK_FL_ENABLED)) {
|
ipipeif->input = IPIPEIF_INPUT_NONE;
|
break;
|
}
|
|
if (ipipeif->input != IPIPEIF_INPUT_NONE)
|
return -EBUSY;
|
|
if (remote->entity == &iss->csi2a.subdev.entity)
|
ipipeif->input = IPIPEIF_INPUT_CSI2A;
|
else if (remote->entity == &iss->csi2b.subdev.entity)
|
ipipeif->input = IPIPEIF_INPUT_CSI2B;
|
|
break;
|
|
case IPIPEIF_PAD_SOURCE_ISIF_SF:
|
/* Write to memory */
|
if (flags & MEDIA_LNK_FL_ENABLED) {
|
if (ipipeif->output & ~IPIPEIF_OUTPUT_MEMORY)
|
return -EBUSY;
|
ipipeif->output |= IPIPEIF_OUTPUT_MEMORY;
|
} else {
|
ipipeif->output &= ~IPIPEIF_OUTPUT_MEMORY;
|
}
|
break;
|
|
case IPIPEIF_PAD_SOURCE_VP | 2 << 16:
|
/* Send to IPIPE/RESIZER */
|
if (flags & MEDIA_LNK_FL_ENABLED) {
|
if (ipipeif->output & ~IPIPEIF_OUTPUT_VP)
|
return -EBUSY;
|
ipipeif->output |= IPIPEIF_OUTPUT_VP;
|
} else {
|
ipipeif->output &= ~IPIPEIF_OUTPUT_VP;
|
}
|
break;
|
|
default:
|
return -EINVAL;
|
}
|
|
return 0;
|
}
|
|
/* media operations */
|
static const struct media_entity_operations ipipeif_media_ops = {
|
.link_setup = ipipeif_link_setup,
|
.link_validate = v4l2_subdev_link_validate,
|
};
|
|
/*
|
* ipipeif_init_entities - Initialize V4L2 subdev and media entity
|
* @ipipeif: ISS ISP IPIPEIF module
|
*
|
* Return 0 on success and a negative error code on failure.
|
*/
|
static int ipipeif_init_entities(struct iss_ipipeif_device *ipipeif)
|
{
|
struct v4l2_subdev *sd = &ipipeif->subdev;
|
struct media_pad *pads = ipipeif->pads;
|
struct media_entity *me = &sd->entity;
|
int ret;
|
|
ipipeif->input = IPIPEIF_INPUT_NONE;
|
|
v4l2_subdev_init(sd, &ipipeif_v4l2_ops);
|
sd->internal_ops = &ipipeif_v4l2_internal_ops;
|
strscpy(sd->name, "OMAP4 ISS ISP IPIPEIF", sizeof(sd->name));
|
sd->grp_id = BIT(16); /* group ID for iss subdevs */
|
v4l2_set_subdevdata(sd, ipipeif);
|
sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
|
|
pads[IPIPEIF_PAD_SINK].flags = MEDIA_PAD_FL_SINK;
|
pads[IPIPEIF_PAD_SOURCE_ISIF_SF].flags = MEDIA_PAD_FL_SOURCE;
|
pads[IPIPEIF_PAD_SOURCE_VP].flags = MEDIA_PAD_FL_SOURCE;
|
|
me->ops = &ipipeif_media_ops;
|
ret = media_entity_pads_init(me, IPIPEIF_PADS_NUM, pads);
|
if (ret < 0)
|
return ret;
|
|
ipipeif_init_formats(sd, NULL);
|
|
ipipeif->video_out.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
|
ipipeif->video_out.ops = &ipipeif_video_ops;
|
ipipeif->video_out.iss = to_iss_device(ipipeif);
|
ipipeif->video_out.capture_mem = PAGE_ALIGN(4096 * 4096) * 3;
|
ipipeif->video_out.bpl_alignment = 32;
|
ipipeif->video_out.bpl_zero_padding = 1;
|
ipipeif->video_out.bpl_max = 0x1ffe0;
|
|
return omap4iss_video_init(&ipipeif->video_out, "ISP IPIPEIF");
|
}
|
|
void omap4iss_ipipeif_unregister_entities(struct iss_ipipeif_device *ipipeif)
|
{
|
v4l2_device_unregister_subdev(&ipipeif->subdev);
|
omap4iss_video_unregister(&ipipeif->video_out);
|
}
|
|
int omap4iss_ipipeif_register_entities(struct iss_ipipeif_device *ipipeif,
|
struct v4l2_device *vdev)
|
{
|
int ret;
|
|
/* Register the subdev and video node. */
|
ret = v4l2_device_register_subdev(vdev, &ipipeif->subdev);
|
if (ret < 0)
|
goto error;
|
|
ret = omap4iss_video_register(&ipipeif->video_out, vdev);
|
if (ret < 0)
|
goto error;
|
|
return 0;
|
|
error:
|
omap4iss_ipipeif_unregister_entities(ipipeif);
|
return ret;
|
}
|
|
/* -----------------------------------------------------------------------------
|
* ISP IPIPEIF initialisation and cleanup
|
*/
|
|
/*
|
* omap4iss_ipipeif_init - IPIPEIF module initialization.
|
* @iss: Device pointer specific to the OMAP4 ISS.
|
*
|
* TODO: Get the initialisation values from platform data.
|
*
|
* Return 0 on success or a negative error code otherwise.
|
*/
|
int omap4iss_ipipeif_init(struct iss_device *iss)
|
{
|
struct iss_ipipeif_device *ipipeif = &iss->ipipeif;
|
|
ipipeif->state = ISS_PIPELINE_STREAM_STOPPED;
|
init_waitqueue_head(&ipipeif->wait);
|
|
return ipipeif_init_entities(ipipeif);
|
}
|
|
/*
|
* omap4iss_ipipeif_create_links() - IPIPEIF pads links creation
|
* @iss: Pointer to ISS device
|
*
|
* return negative error code or zero on success
|
*/
|
int omap4iss_ipipeif_create_links(struct iss_device *iss)
|
{
|
struct iss_ipipeif_device *ipipeif = &iss->ipipeif;
|
|
/* Connect the IPIPEIF subdev to the video node. */
|
return media_create_pad_link(&ipipeif->subdev.entity,
|
IPIPEIF_PAD_SOURCE_ISIF_SF,
|
&ipipeif->video_out.video.entity, 0, 0);
|
}
|
|
/*
|
* omap4iss_ipipeif_cleanup - IPIPEIF module cleanup.
|
* @iss: Device pointer specific to the OMAP4 ISS.
|
*/
|
void omap4iss_ipipeif_cleanup(struct iss_device *iss)
|
{
|
struct iss_ipipeif_device *ipipeif = &iss->ipipeif;
|
|
media_entity_cleanup(&ipipeif->subdev.entity);
|
}
|
