platform/msm7x30/platform.c

/*
 * Copyright (c) 2008, Google Inc.
 * All rights reserved.
 * Copyright (c) 2009-2011, The Linux Foundation. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *  * Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *  * Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *  * Neither the name of Google, Inc. nor the names of its contributors
 *    may be used to endorse or promote products derived from this
 *    software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#include <debug.h>

#include <reg.h>
#include <dev/fbcon.h>
#include <kernel/thread.h>
#include <platform/debug.h>
#include <platform/iomap.h>
#include <mddi_hw.h>
#include "gpio_hw.h"
#include <dev/lcdc.h>

void platform_init_interrupts(void);
void platform_init_timer();

void uart2_clock_init(void);
void uart_init(void);

struct fbcon_config *lcdc_init(void);
static uint32_t ticks_per_sec = 0;

#define ARRAY_SIZE(a) (sizeof(a)/(sizeof((a)[0])))

static unsigned uart2_gpio_table[] = {
	GPIO_CFG(49, 2, GPIO_OUTPUT, GPIO_PULL_DOWN, GPIO_2MA),
	GPIO_CFG(50, 2, GPIO_INPUT, GPIO_PULL_DOWN, GPIO_2MA),
	GPIO_CFG(51, 2, GPIO_INPUT, GPIO_PULL_DOWN, GPIO_2MA),
	GPIO_CFG(52, 2, GPIO_OUTPUT, GPIO_PULL_DOWN, GPIO_2MA),
};

/* CRCI - mmc slot mapping.
 * mmc slot numbering start from 1.
 * entry at index 0 is just dummy.
 */
uint8_t sdc_crci_map[5] = { 0, 6, 7, 12, 13 };

void uart2_mux_init(void)
{
	platform_gpios_enable(uart2_gpio_table, ARRAY_SIZE(uart2_gpio_table));
}

void platform_early_init(void)
{
#if WITH_DEBUG_UART
	uart2_mux_init();
	uart2_clock_init();
	uart_init();
#endif
	platform_init_interrupts();
	platform_init_timer();
}

void platform_init(void)
{
	struct fbcon_config *fb_cfg;

	dprintf(INFO, "platform_init()\n");
	acpu_clock_init();
	adm_enable_clock();
}

void mdp4_display_intf_sel(int output, int intf)
{
	unsigned bits, mask;
	unsigned dma2_cfg_reg;
	bits = readl(MSM_MDP_BASE1 + 0x0038);
	mask = 0x03;		/* 2 bits */
	intf &= 0x03;		/* 2 bits */

	switch (output) {
	case EXTERNAL_INTF_SEL:
		intf <<= 4;
		mask <<= 4;
		break;
	case SECONDARY_INTF_SEL:
		intf &= 0x02;	/* only MDDI and EBI2 support */
		intf <<= 2;
		mask <<= 2;
		break;
	default:
		break;
	}

	bits &= ~mask;
	bits |= intf;
	writel(bits, MSM_MDP_BASE1 + 0x0038);	/* MDP_DISP_INTF_SEL */
}

void display_init(void)
{
	struct fbcon_config *fb_cfg;

#if DISPLAY_TYPE_MDDI
	mddi_pmdh_clock_init();
	mddi_panel_poweron();
	/* We need to config GPIO 38 for Sleep clock with Spl Fun 2 */
	toshiba_pmic_gpio_init(GPIO38_GPIO_CNTRL);
	fb_cfg = mddi_init();
	fbcon_setup(fb_cfg);
#endif

#if DISPLAY_TYPE_LCDC
	if(!machine_is_ffa()) {
		struct lcdc_timing_parameters *lcd_timing;
		mdp_lcdc_clock_init();
		lcd_timing = get_lcd_timing();
		fb_cfg = lcdc_init_set(lcd_timing);
		panel_poweron();
		fbcon_setup(fb_cfg);
	}
#endif
}

void display_shutdown(void)
{
#if DISPLAY_TYPE_LCDC
	/* Turning off LCDC */
	if(!machine_is_ffa()) {
		lcdc_shutdown();
	}
#endif
}

void platform_uninit(void)
{
#if DISPLAY_SPLASH_SCREEN
	display_shutdown();
#endif

	platform_uninit_timer();
}

/* Initialize DGT timer */
void platform_init_timer(void)
{
	uint32_t val = 0;

	/* Disable timer */
	writel(0, DGT_ENABLE);

	/* Check for the hardware revision */
	val = readl(HW_REVISION_NUMBER);
	val = (val >> 28) & 0x0F;
	if (val >= 1)
		writel(1, DGT_CLK_CTL);

#if _EMMC_BOOT
	ticks_per_sec = 19200000;	/* Uses TCXO (19.2 MHz) */
#else
	ticks_per_sec = 6144000;	/* Uses LPXO/4 (24.576 MHz / 4) */
#endif
}

/* Returns platform specific ticks per sec */
uint32_t platform_tick_rate(void)
{
	return ticks_per_sec;
}