path: root/drivers/video/omap2/dss/ti_hdmi_4xxx_ip.c

/*
 * ti_hdmi_4xxx_ip.c
 *
 * HDMI TI81xx, TI38xx, TI OMAP4 etc IP driver Library
 * Copyright (C) 2010-2011 Texas Instruments Incorporated - http://www.ti.com/
 * Authors: Yong Zhi
 *	Mythri pk <mythripk@ti.com>
 *
 * 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, see <http://www.gnu.org/licenses/>.
 */

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/err.h>
#include <linux/io.h>
#include <linux/interrupt.h>
#include <linux/mutex.h>
#include <linux/delay.h>
#include <linux/string.h>
#include <linux/seq_file.h>
#include <linux/gpio.h>

#include "ti_hdmi_4xxx_ip.h"
#include "dss.h"

static inline void hdmi_write_reg(void __iomem *base_addr,
				const u16 idx, u32 val)
{
	__raw_writel(val, base_addr + idx);
}

static inline u32 hdmi_read_reg(void __iomem *base_addr,
				const u16 idx)
{
	return __raw_readl(base_addr + idx);
}

static inline void __iomem *hdmi_wp_base(struct hdmi_ip_data *ip_data)
{
	return ip_data->base_wp;
}

static inline void __iomem *hdmi_phy_base(struct hdmi_ip_data *ip_data)
{
	return ip_data->base_wp + ip_data->phy_offset;
}

static inline void __iomem *hdmi_pll_base(struct hdmi_ip_data *ip_data)
{
	return ip_data->base_wp + ip_data->pll_offset;
}

static inline void __iomem *hdmi_av_base(struct hdmi_ip_data *ip_data)
{
	return ip_data->base_wp + ip_data->core_av_offset;
}

static inline void __iomem *hdmi_core_sys_base(struct hdmi_ip_data *ip_data)
{
	return ip_data->base_wp + ip_data->core_sys_offset;
}

static inline int hdmi_wait_for_bit_change(void __iomem *base_addr,
				const u16 idx,
				int b2, int b1, u32 val)
{
	u32 t = 0;
	while (val != REG_GET(base_addr, idx, b2, b1)) {
		udelay(1);
		if (t++ > 10000)
			return !val;
	}
	return val;
}

static int hdmi_pll_init(struct hdmi_ip_data *ip_data)
{
	u32 r;
	void __iomem *pll_base = hdmi_pll_base(ip_data);
	struct hdmi_pll_info *fmt = &ip_data->