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/*
* Copyright 2018 NXP
*
* 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.
*/
#ifndef __SEC_MIPI_DSIM_H__
#define __SEC_MIPI_DSIM_H__
#include <drm/drmP.h>
#include <linux/bsearch.h>
struct sec_mipi_dsim_dphy_timing;
struct sec_mipi_dsim_plat_data {
uint32_t version;
uint32_t max_data_lanes;
uint64_t max_data_rate;
const struct sec_mipi_dsim_dphy_timing *dphy_timing;
uint32_t num_dphy_timing;
int (*dphy_timing_cmp)(const void *key, const void *elt);
enum drm_mode_status (*mode_valid)(struct drm_connector *connector,
struct drm_display_mode *mode);
};
/* DPHY timings structure */
struct sec_mipi_dsim_dphy_timing {
uint32_t bit_clk; /* MHz */
uint32_t clk_prepare;
uint32_t clk_zero;
uint32_t clk_post;
uint32_t clk_trail;
uint32_t hs_prepare;
uint32_t hs_zero;
uint32_t hs_trail;
uint32_t lpx;
uint32_t hs_exit;
};
#define DSIM_DPHY_TIMING(bclk, cpre, czero, cpost, ctrail, \
hpre, hzero, htrail, lp, hexit) \
.bit_clk = bclk, \
.clk_prepare = cpre, \
.clk_zero = czero, \
.clk_post = cpost, \
.clk_trail = ctrail, \
.hs_prepare = hpre, \
.hs_zero = hzero, \
.hs_trail = htrail, \
.lpx = lp, \
.hs_exit = hexit
static inline int dphy_timing_default_cmp(const void *key, const void *elt)
{
const struct sec_mipi_dsim_dphy_timing *_key = key;
const struct sec_mipi_dsim_dphy_timing *_elt = elt;
/* find an element whose 'bit_clk' is equal to the
* the key's 'bit_clk' value or, the difference
* between them is less than 5.
*/
if (abs((int)(_elt->bit_clk - _key->bit_clk)) <= 5)
return 0;
if (_key->bit_clk < _elt->bit_clk)
/* search bottom half */
return 1;
else
/* search top half */
return -1;
}
int sec_mipi_dsim_check_pll_out(void *driver_private,
const struct drm_display_mode *mode);
int sec_mipi_dsim_bind(struct device *dev, struct device *master, void *data,
struct drm_encoder *encoder, struct resource *res,
int irq, const struct sec_mipi_dsim_plat_data *pdata);
void sec_mipi_dsim_unbind(struct device *dev, struct device *master, void *data);
void sec_mipi_dsim_suspend(struct device *dev);
void sec_mipi_dsim_resume(struct device *dev);
#endif
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