152 lines
4.3 KiB
C
152 lines
4.3 KiB
C
/*
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* Copyright (c) 2008, Google Inc.
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* All rights reserved.
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* Copyright (c) 2009-2010, Code Aurora Forum. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Google, Inc. nor the names of its contributors
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* may be used to endorse or promote products derived from this
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* software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <debug.h>
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#include <reg.h>
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#include <dev/fbcon.h>
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#include <kernel/thread.h>
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#include <platform/debug.h>
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#include <platform/iomap.h>
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#include <i2c_qup.h>
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#define CONVERT_ENDIAN_U32(val) \
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((((uint32_t)(val) & 0x000000FF) << 24) | \
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(((uint32_t)(val) & 0x0000FF00) << 8) | \
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(((uint32_t)(val) & 0x00FF0000) >> 8) | \
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(((uint32_t)(val) & 0xFF000000) >> 24))
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#define CONVERT_ENDIAN_U16(val) \
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((((uint16_t)(val) & 0x00FF) << 8) | \
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(((uint16_t)(val) & 0xFF00) >> 8))
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/* Configuration Data Table */
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#define CDT_MAGIC_NUMBER 0x43445400
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struct cdt_header
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{
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uint32_t magic; /* Magic number */
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uint16_t version; /* Version number */
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uint32_t reserved1;
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uint32_t reserved2;
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}__attribute__((packed));
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void platform_init_interrupts(void);
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void platform_init_timer();
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void uart3_clock_init(void);
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void uart_init(void);
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struct fbcon_config *lcdc_init(void);
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void platform_early_init(void)
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{
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uart_init();
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platform_init_interrupts();
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platform_init_timer();
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}
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void platform_init(void)
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{
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dprintf(INFO, "platform_init()\n");
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}
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void display_init(void)
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{
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struct fbcon_config *fb_cfg;
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#if DISPLAY_TYPE_LCDC
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mdp_clock_init();
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fb_cfg = lcdc_init();
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panel_poweron();
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fbcon_setup(fb_cfg);
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#endif
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#if DISPLAY_TYPE_MIPI
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mdp_clock_init();
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fb_cfg = mipi_init();
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fbcon_setup(fb_cfg);
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#endif
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}
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void display_shutdown(void)
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{
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#if DISPLAY_TYPE_LCDC
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/* Turning off LCDC */
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lcdc_shutdown();
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#endif
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#if DISPLAY_TYPE_MIPI
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mipi_dsi_shutdown();
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#endif
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}
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static struct qup_i2c_dev* dev = NULL;
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uint32_t eprom_read (uint16_t addr, uint8_t count) {
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uint32_t ret = 0;
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if(!dev){
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return ret;
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}
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/* Create a i2c_msg buffer, that is used to put the controller into
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* read mode and then to read some data.
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*/
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struct i2c_msg msg_buf[] = {
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{EEPROM_I2C_ADDRESS, I2C_M_WR, 2, &addr},
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{EEPROM_I2C_ADDRESS, I2C_M_RD, count, &ret}
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};
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qup_i2c_xfer(dev, msg_buf, 2);
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return ret;
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}
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/* Read EEPROM to find out product id. Return 0 in case of failure */
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uint32_t platform_id_read (void)
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{
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uint32_t id = 0;
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uint16_t offset = 0;
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dev = qup_i2c_init(GSBI8_BASE, 100000, 24000000);
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if(!dev){
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return id;
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}
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/* Check if EPROM is valid */
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if (CONVERT_ENDIAN_U32(eprom_read(0, 4)) == CDT_MAGIC_NUMBER)
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{
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/* Get offset for platform ID info from Meta Data block 0 */
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offset = eprom_read(CONVERT_ENDIAN_U16(0 +
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sizeof(struct cdt_header)), 2);
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/* Read platform ID */
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id = eprom_read(CONVERT_ENDIAN_U16(offset), 4);
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id = CONVERT_ENDIAN_U32(id);
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id = (id & 0x00FF0000) >> 16;
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}
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return id;
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}
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