path: root/drivers/media/video/davinci/isif.c

/*
 * Copyright (C) 2008-2009 Texas Instruments Inc
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 * Image Sensor Interface (ISIF) driver
 *
 * This driver is for configuring the ISIF IP available on DM365 or any other
 * TI SoCs. This is used for capturing yuv or bayer video or image data
 * from a decoder or sensor. This IP is similar to the CCDC IP on DM355
 * and DM6446, but with enhanced or additional ip blocks. The driver
 * configures the ISIF upon commands from the vpfe bridge driver through
 * ccdc_hw_device interface.
 *
 * TODO: 1) Raw bayer parameter settings and bayer capture
 *	 2) Add support for control ioctl
 */
#include <linux/delay.h>
#include <linux/platform_device.h>
#include <linux/uaccess.h>
#include <linux/io.h>
#include <linux/videodev2.h>
#include <linux/clk.h>
#include <linux/err.h>

#include <mach/mux.h>

#include <media/davinci/isif.h>
#include <media/davinci/vpss.h>

#include "isif_regs.h"
#include "ccdc_hw_device.h"

/* Defaults for module configuration parameters */
static struct isif_config_params_raw isif_config_defaults = {
	.linearize = {
		.en = 0,
		.corr_shft = ISIF_NO_SHIFT,
		.scale_fact = {1, 0},
	},
	.df_csc = {
		.df_or_csc = 0,
		.csc = {
			.en = 0,
		},
	},
	.dfc = {
		.en = 0,
	},
	.bclamp = {
		.en = 0,
	},
	.gain_offset = {
		.gain = {
			.r_ye = {1, 0},
			.gr_cy = {1, 0},
			.gb_g = {1, 0},
			.b_mg = {1, 0},
		},
	},
	.culling = {
		.hcpat_odd = 0xff,
		.hcpat_even = 0xff,
		.vcpat = 0xff,
	},
	.compress = {
		.alg = ISIF_ALAW,
	},
};

/* ISIF operation configuration */
static struct isif_oper_config {
	struct device *dev;
	enum vpfe_hw_if_type if_type;
	struct isif_ycbcr_config ycbcr;
	struct isif_params_raw bayer;
	enum isif_data_pack data_pack;
	/* Master clock */
	struct clk *mclk;
	/* ISIF base address */
	void __iomem *base_addr;
	/* ISIF Linear Table 0 */
	void __iomem *linear_tbl0_addr;
	/* ISIF Linear Table 1 */
	void __iomem *linear_tbl1_addr;
} isif_cfg = {
	.ycbcr = {
		.pix_fmt = CCDC_PIXFMT_YCBCR_8BIT,
		.frm_fmt = CCDC_FRMFMT_INTERLACED,
		.win = ISIF_WIN_NTSC,
		.fid_pol = VPFE_PINPOL_POSITIVE,
		.vd_pol = VPFE_PINPOL_POSITIVE,
		.hd_pol = VPFE_PINPOL_POSITIVE,
		.pix_order = CCDC_PIXORDER_CBYCRY,
		.buf_type = CCDC_BUFTYPE_FLD_INTERLEAVED,
	},
	.bayer = {
		.pix_fmt = CCDC_PIXFMT_RAW,
		.frm_fmt = CCDC_FRMFMT_PROGRESSIVE,
		.win = ISIF_WIN_VGA,
		.fid_pol = VPFE_PINPOL_POSITIVE,
		.vd_pol = VPFE_PINPOL_POSITIVE,
		.hd_pol = VPFE_PINPOL_POSITIVE,
		.gain = {
			.r_ye = {1, 0},
			.gr_cy = {1, 0},
			.gb_g = {1, 0},
			.b_mg = {1, 0},
		},
		.cfa_pat = ISIF_CFA_PAT_MOSAIC,
		.data_msb