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/*
* drivers/media/i2c/smiapp-pll.h
*
* Generic driver for SMIA/SMIA++ compliant camera modules
*
* Copyright (C) 2012 Nokia Corporation
* Contact: Sakari Ailus <sakari.ailus@iki.fi>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* version 2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA
*
*/
#ifndef SMIAPP_PLL_H
#define SMIAPP_PLL_H
#include <linux/device.h>
/* CSI-2 or CCP-2 */
#define SMIAPP_PLL_BUS_TYPE_CSI2 0x00
#define SMIAPP_PLL_BUS_TYPE_PARALLEL 0x01
/* op pix clock is for all lanes in total normally */
#define SMIAPP_PLL_FLAG_OP_PIX_CLOCK_PER_LANE (1 << 0)
#define SMIAPP_PLL_FLAG_NO_OP_CLOCKS (1 << 1)
struct smiapp_pll_branch {
uint16_t sys_clk_div;
uint16_t pix_clk_div;
uint32_t sys_clk_freq_hz;
uint32_t pix_clk_freq_hz;
};
struct smiapp_pll {
/* input values */
uint8_t bus_type;
union {
struct {
uint8_t lanes;
} csi2;
struct {
uint8_t bus_width;
} parallel;
};
unsigned long flags;
uint8_t binning_horizontal;
uint8_t binning_vertical;
uint8_t scale_m;
uint8_t scale_n;
uint8_t bits_per_pixel;
uint32_t link_freq;
uint32_t ext_clk_freq_hz;
/* output values */
uint16_t pre_pll_clk_div;
uint16_t pll_multiplier;
uint32_t pll_ip_clk_freq_hz;
uint32_t pll_op_clk_freq_hz;
struct smiapp_pll_branch vt;
struct smiapp_pll_branch op;
uint32_t pixel_rate_csi;
uint32_t pixel_rate_pixel_array;
};
struct smiapp_pll_branch_limits {
uint16_t min_sys_clk_div;
uint16_t max_sys_clk_div;
uint32_t min_sys_clk_freq_hz;
uint32_t max_sys_clk_freq_hz;
uint16_t min_pix_clk_div;
uint16_t max_pix_clk_div;
uint32_t min_pix_clk_freq_hz;
uint32_t max_pix_clk_freq_hz;
};
struct smiapp_pll_limits {
/* Strict PLL limits */
uint32_t min_ext_clk_freq_hz;
uint32_t max_ext_clk_freq_hz;
uint16_t min_pre_pll_clk_div;
uint16_t max_pre_pll_clk_div;
uint32_t min_pll_ip_freq_hz;
uint32_t max_pll_ip_freq_hz;
uint16_t min_pll_multiplier;
uint16_t max_pll_multiplier;
uint32_t min_pll_op_freq_hz;
uint32_t max_pll_op_freq_hz;
struct smiapp_pll_branch_limits vt;
struct smiapp_pll_branch_limits op;
/* Other relevant limits */
uint32_t min_line_length_pck_bin;
uint32_t min_line_length_pck;
};
struct device;
int smiapp_pll_calculate(struct device *dev,
const struct smiapp_pll_limits *limits,
struct smiapp_pll *pll);
#endif /* SMIAPP_PLL_H */
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