414 lines
9.4 KiB
C
414 lines
9.4 KiB
C
/*
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* arch/ubicom32/mach-ip7k/board-ip7500iap.c
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* Support for IP7500 Internet Audio Player
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*
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* This file supports the IP7500 Internet Audio Player:
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* 8007-1110 Rev 1.0
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*
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* (C) Copyright 2009, Ubicom, Inc.
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*
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* This file is part of the Ubicom32 Linux Kernel Port.
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*
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* The Ubicom32 Linux Kernel Port is free software: you can redistribute
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* it and/or modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation, either version 2 of the
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* License, or (at your option) any later version.
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*
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* The Ubicom32 Linux Kernel Port is distributed in the hope that it
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* will be useful, but WITHOUT ANY WARRANTY; without even the implied
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* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
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* the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with the Ubicom32 Linux Kernel Port. If not,
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* see <http://www.gnu.org/licenses/>.
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*/
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#include <linux/device.h>
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#include <linux/gpio.h>
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#include <asm/board.h>
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#include <linux/delay.h>
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#include <linux/platform_device.h>
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#include <asm/audio.h>
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#include <linux/i2c.h>
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#include <linux/i2c-gpio.h>
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#include <asm/ubicom32sd.h>
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#include <asm/sd_tio.h>
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#include <asm/ubicom32bl.h>
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#include <asm/machdep.h>
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/******************************************************************************
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* SD/IO Port F (Slot 1) platform data
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*/
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static struct resource ip7500iap_portf_sd_resources[] = {
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/*
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* Send IRQ
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*/
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[0] = {
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/*
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* The init routine will query the devtree and fill this in
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*/
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.flags = IORESOURCE_IRQ,
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},
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/*
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* Receive IRQ
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*/
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[1] = {
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/*
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* The init routine will query the devtree and fill this in
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*/
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.flags = IORESOURCE_IRQ,
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},
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/*
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* Memory Mapped Registers
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*/
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[2] = {
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/*
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* The init routine will query the devtree and fill this in
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*/
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.flags = IORESOURCE_MEM,
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},
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};
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static struct ubicom32sd_card ip7500iap_portf_sd_cards[] = {
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[0] = {
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.pin_wp = GPIO_RF_7,
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.wp_polarity = 1,
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.pin_pwr = GPIO_RF_8,
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.pin_cd = GPIO_RF_6,
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},
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};
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static struct ubicom32sd_platform_data ip7500iap_portf_sd_platform_data = {
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.ncards = 1,
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.cards = ip7500iap_portf_sd_cards,
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};
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static struct platform_device ip7500iap_portf_sd_device = {
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.name = "ubicom32sd",
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.id = 0,
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.resource = ip7500iap_portf_sd_resources,
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.num_resources = ARRAY_SIZE(ip7500iap_portf_sd_resources),
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.dev = {
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.platform_data = &ip7500iap_portf_sd_platform_data,
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},
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};
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/*
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* ip7500iap_portf_sd_init
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*/
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static void ip7500iap_portf_sd_init(void)
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{
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/*
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* Check the device tree for the sd_tio
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*/
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struct sd_tio_node *sd_node = (struct sd_tio_node *)devtree_find_node("portf_sd");
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if (!sd_node) {
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printk(KERN_INFO "PortF SDTIO not found\n");
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return;
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}
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/*
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* Fill in the resources and platform data from devtree information
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*/
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ip7500iap_portf_sd_resources[0].start = sd_node->dn.sendirq;
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ip7500iap_portf_sd_resources[1].start = sd_node->dn.recvirq;
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ip7500iap_portf_sd_resources[2].start = (u32_t)&(sd_node->regs);
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ip7500iap_portf_sd_resources[2].end = (u32_t)&(sd_node->regs) + sizeof(sd_node->regs);
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platform_device_register(&ip7500iap_portf_sd_device);
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}
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/******************************************************************************
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* SD/IO Port B (Slot 2) platform data
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*/
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static struct resource ip7500iap_portb_sd_resources[] = {
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/*
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* Send IRQ
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*/
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[0] = {
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/*
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* The init routine will query the devtree and fill this in
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*/
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.flags = IORESOURCE_IRQ,
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},
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/*
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* Receive IRQ
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*/
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[1] = {
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/*
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* The init routine will query the devtree and fill this in
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*/
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.flags = IORESOURCE_IRQ,
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},
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/*
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* Memory Mapped Registers
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*/
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[2] = {
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/*
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* The init routine will query the devtree and fill this in
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*/
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.flags = IORESOURCE_MEM,
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},
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};
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static struct ubicom32sd_card ip7500iap_portb_sd_cards[] = {
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[0] = {
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.pin_wp = GPIO_RB_13,
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.wp_polarity = 1,
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.pin_pwr = GPIO_RB_11,
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.pin_cd = GPIO_RB_12,
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},
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};
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static struct ubicom32sd_platform_data ip7500iap_portb_sd_platform_data = {
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.ncards = 1,
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.cards = ip7500iap_portb_sd_cards,
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};
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static struct platform_device ip7500iap_portb_sd_device = {
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.name = "ubicom32sd",
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.id = 1,
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.resource = ip7500iap_portb_sd_resources,
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.num_resources = ARRAY_SIZE(ip7500iap_portb_sd_resources),
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.dev = {
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.platform_data = &ip7500iap_portb_sd_platform_data,
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},
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};
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/*
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* ip7500iap_portb_sd_init
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*/
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static void ip7500iap_portb_sd_init(void)
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{
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/*
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* Check the device tree for the sd_tio
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*/
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struct sd_tio_node *sd_node = (struct sd_tio_node *)devtree_find_node("portb_sd");
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if (!sd_node) {
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printk(KERN_INFO "PortB SDTIO not found\n");
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return;
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}
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/*
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* Fill in the resources and platform data from devtree information
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*/
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ip7500iap_portb_sd_resources[0].start = sd_node->dn.sendirq;
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ip7500iap_portb_sd_resources[1].start = sd_node->dn.recvirq;
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ip7500iap_portb_sd_resources[2].start = (u32_t)&(sd_node->regs);
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ip7500iap_portb_sd_resources[2].end = (u32_t)&(sd_node->regs) + sizeof(sd_node->regs);
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platform_device_register(&ip7500iap_portb_sd_device);
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}
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/******************************************************************************
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* Touch controller
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*
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* Connected via I2C bus, interrupt on PA6
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*/
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#include <linux/i2c/tsc2007.h>
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/*
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* ip7500iap_tsc2007_exit_platform_hw
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*/
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static void ip7500iap_tsc2007_exit_platform_hw(void)
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{
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UBICOM32_IO_PORT(RA)->ctl0 &= ~(0x03 << 19);
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gpio_free(GPIO_RA_6);
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}
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/*
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* ip7500iap_tsc2007_init_platform_hw
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*/
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static int ip7500iap_tsc2007_init_platform_hw(void)
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{
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int res = gpio_request(GPIO_RA_6, "TSC2007_IRQ");
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if (res) {
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return res;
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}
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UBICOM32_IO_PORT(RA)->ctl0 &= ~(0x03 << 19);
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UBICOM32_IO_PORT(RA)->ctl0 |= (0x02 << 19);
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return 0;
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}
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/*
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* ip7500iap_tsc2007_get_pendown_state
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*/
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static int ip7500iap_tsc2007_get_pendown_state(void)
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{
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return !gpio_get_value(GPIO_RA_6);
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}
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static struct tsc2007_platform_data ip7500iap_tsc2007_data = {
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.model = 2007,
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.x_plate_ohms = 350,
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.get_pendown_state = ip7500iap_tsc2007_get_pendown_state,
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.init_platform_hw = ip7500iap_tsc2007_init_platform_hw,
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.exit_platform_hw = ip7500iap_tsc2007_exit_platform_hw,
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};
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/******************************************************************************
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* i2c devices
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*
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* DO NOT CHANGE THE ORDER HERE unless you know how this works. There
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* are hardcoded indicies which refer to the order of drivers listed here.
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*/
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static struct i2c_board_info __initdata ip7500iap_i2c_board_info[] = {
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/*
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* U6, CS4350 DAC, address 0x4B
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*/
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{
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.type = "cs4350",
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.addr = 0x4B,
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},
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/*
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* U20, S35390A RTC, address 0x30
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*/
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{
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.type = "s35390a",
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.addr = 0x30,
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},
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/*
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* U9, TSC2007 Touch screen controller, address 0x49, irq RA6
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*/
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{
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.type = "tsc2007",
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.addr = 0x49,
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.irq = 46,
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.platform_data = &ip7500iap_tsc2007_data,
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},
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};
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/*
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* I2C bus on the board, SDA PE4, SCL PE5
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*/
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static struct i2c_gpio_platform_data ip7500iap_i2c_data = {
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.sda_pin = GPIO_RF_14,
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.scl_pin = GPIO_RF_13,
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.sda_is_open_drain = 0,
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.scl_is_open_drain = 0,
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.udelay = 50,
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};
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static struct platform_device ip7500iap_i2c_device = {
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.name = "i2c-gpio",
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.id = 0,
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.dev = {
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.platform_data = &ip7500iap_i2c_data,
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},
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};
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/******************************************************************************
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* Backlight on the board PD0, hardware PWM
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*/
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static struct ubicom32bl_platform_data ip7500iap_backlight_data = {
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.type = UBICOM32BL_TYPE_PWM,
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.pwm_channel = 2,
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.pwm_prescale = 15,
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.pwm_period = 60,
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.default_intensity = 0x80,
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};
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static struct platform_device ip7500iap_backlight_device = {
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.name = "ubicom32bl",
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.id = -1,
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.dev = {
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.platform_data = &ip7500iap_backlight_data,
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},
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};
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/******************************************************************************
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* Devices on this board
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*/
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static struct platform_device *ip7500iap_devices[] __initdata = {
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&ip7500iap_i2c_device,
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&ip7500iap_backlight_device,
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};
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/*
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* ip7500iap_power_off
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* Called to turn the power off for this board
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*/
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static void ip7500iap_power_off(void)
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{
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gpio_set_value(GPIO_RF_11, 0);
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}
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/*
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* ip7500iap_init
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* Called to add the devices which we have on this board
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*/
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static int __init ip7500iap_init(void)
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{
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struct platform_device *audio_dev;
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struct platform_device *audio_dev2;
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int ret;
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board_init();
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ubi_gpio_init();
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/*
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* Hold the POWER_HOLD line
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*/
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ret = gpio_request(GPIO_RF_11, "POWER_HOLD");
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if (ret) {
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printk(KERN_ERR "%s: could not request POWER_HOLD GPIO\n", __FUNCTION__);
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}
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gpio_direction_output(GPIO_RF_11, 1);
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mach_power_off = ip7500iap_power_off;
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/*
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* DAC nRESET line
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*/
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ret = gpio_request(GPIO_RE_7, "DAC_nRESET");
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if (ret) {
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printk(KERN_ERR "%s: could not request DAC_nRESET GPIO\n", __FUNCTION__);
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}
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gpio_direction_output(GPIO_RE_7, 0);
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udelay(1);
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gpio_set_value(GPIO_RE_7, 1);
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/*
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* Bring up any SDIO slots
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*/
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ip7500iap_portb_sd_init();
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ip7500iap_portf_sd_init();
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/*
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* Bring up audio devices
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*/
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platform_add_devices(ip7500iap_devices, ARRAY_SIZE(ip7500iap_devices));
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audio_dev = audio_device_alloc("snd-ubi32-cs4350", "audio", "audio-i2sout", 0);
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if (audio_dev) {
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ip7500iap_i2c_board_info[0].platform_data = audio_dev;
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}
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audio_dev2 = audio_device_alloc("snd-ubi32-generic", "audio", "audio-spdifout", 0);
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if (audio_dev2) {
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platform_device_register(audio_dev2);
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}
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printk(KERN_INFO "%s: registering i2c resources\n", __FUNCTION__);
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i2c_register_board_info(0, ip7500iap_i2c_board_info, ARRAY_SIZE(ip7500iap_i2c_board_info));
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printk(KERN_INFO "IP7500 Internet Audio Player\n");
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return 0;
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}
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arch_initcall(ip7500iap_init);
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