arch/arm/mach-msm/board-msm7x30.c

   1 /* Copyright (c) 2009-2010, Code Aurora Forum. All rights reserved.
   2  *
   3  * This program is free software; you can redistribute it and/or modify
   4  * it under the terms of the GNU General Public License version 2 and
   5  * only version 2 as published by the Free Software Foundation.
   6  *
   7  * This program is distributed in the hope that it will be useful,
   8  * but WITHOUT ANY WARRANTY; without even the implied warranty of
   9  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  10  * GNU General Public License for more details.
  11  *
  12  * You should have received a copy of the GNU General Public License
  13  * along with this program; if not, write to the Free Software
  14  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  15  * 02110-1301, USA.
  16  */
  17 #include <linux/gpio.h>
  18 #include <linux/kernel.h>
  19 #include <linux/irq.h>
  20 #include <linux/platform_device.h>
  21 #include <linux/delay.h>
  22 #include <linux/io.h>
  23 #include <linux/smsc911x.h>
  24 #include <linux/usb/msm_hsusb.h>
  25 #include <linux/clkdev.h>
  26 #include <linux/memblock.h>
  27
  28 #include <asm/mach-types.h>
  29 #include <asm/mach/arch.h>
  30 #include <asm/memory.h>
  31 #include <asm/setup.h>
  32
  33 #include <mach/clk.h>
  34 #include <mach/msm_iomap.h>
  35 #include <mach/dma.h>
  36
  37 #include <mach/vreg.h>
  38 #include "devices.h"
  39 #include "gpiomux.h"
  40 #include "proc_comm.h"
  41 #include "common.h"
  42
  43 static void __init msm7x30_fixup(struct tag *tag, char **cmdline,
  44                 struct meminfo *mi)
  45 {
  46         for (; tag->hdr.size; tag = tag_next(tag))
  47                 if (tag->hdr.tag == ATAG_MEM && tag->u.mem.start == 0x200000) {
  48                         tag->u.mem.start = 0;
  49                         tag->u.mem.size += SZ_2M;
  50                 }
  51 }
  52
  53 static void __init msm7x30_reserve(void)
  54 {
  55         memblock_remove(0x0, SZ_2M);
  56 }
  57
  58 static int hsusb_phy_init_seq[] = {
  59         0x30, 0x32,     /* Enable and set Pre-Emphasis Depth to 20% */
  60         0x02, 0x36,     /* Disable CDR Auto Reset feature */
  61         -1
  62 };
  63
  64 static int hsusb_link_clk_reset(struct clk *link_clk, bool assert)
  65 {
  66         int ret;
  67
  68         if (assert) {
  69                 ret = clk_reset(link_clk, CLK_RESET_ASSERT);
  70                 if (ret)
  71                         pr_err("usb hs_clk assert failed\n");
  72         } else {
  73                 ret = clk_reset(link_clk, CLK_RESET_DEASSERT);
  74                 if (ret)
  75                         pr_err("usb hs_clk deassert failed\n");
  76         }
  77         return ret;
  78 }
  79
  80 static int hsusb_phy_clk_reset(struct clk *phy_clk)
  81 {
  82         int ret;
  83
  84         ret = clk_reset(phy_clk, CLK_RESET_ASSERT);
  85         if (ret) {
  86                 pr_err("usb phy clk assert failed\n");
  87                 return ret;
  88         }
  89         usleep_range(10000, 12000);
  90         ret = clk_reset(phy_clk, CLK_RESET_DEASSERT);
  91         if (ret)
  92                 pr_err("usb phy clk deassert failed\n");
  93         return ret;
  94 }
  95
  96 static struct msm_otg_platform_data msm_otg_pdata = {
  97         .phy_init_seq           = hsusb_phy_init_seq,
  98         .mode                   = USB_PERIPHERAL,
  99         .otg_control            = OTG_PHY_CONTROL,
 100         .link_clk_reset         = hsusb_link_clk_reset,
 101         .phy_clk_reset          = hsusb_phy_clk_reset,
 102 };
 103
 104 struct msm_gpiomux_config msm_gpiomux_configs[GPIOMUX_NGPIOS] = {
 105 #ifdef CONFIG_SERIAL_MSM_CONSOLE
 106         [49] = { /* UART2 RFR */
 107                 .suspended = GPIOMUX_DRV_2MA | GPIOMUX_PULL_DOWN |
 108                              GPIOMUX_FUNC_2 | GPIOMUX_VALID,
 109         },
 110         [50] = { /* UART2 CTS */
 111                 .suspended = GPIOMUX_DRV_2MA | GPIOMUX_PULL_DOWN |
 112                              GPIOMUX_FUNC_2 | GPIOMUX_VALID,
 113         },
 114         [51] = { /* UART2 RX */
 115                 .suspended = GPIOMUX_DRV_2MA | GPIOMUX_PULL_DOWN |
 116                              GPIOMUX_FUNC_2 | GPIOMUX_VALID,
 117         },
 118         [52] = { /* UART2 TX */
 119                 .suspended = GPIOMUX_DRV_2MA | GPIOMUX_PULL_DOWN |
 120                              GPIOMUX_FUNC_2 | GPIOMUX_VALID,
 121         },
 122 #endif
 123 };
 124
 125 static struct platform_device *devices[] __initdata = {
 126         &msm_clock_7x30,
 127         &msm_device_gpio_7x30,
 128 #if defined(CONFIG_SERIAL_MSM) || defined(CONFIG_MSM_SERIAL_DEBUGGER)
 129         &msm_device_uart2,
 130 #endif
 131         &msm_device_smd,
 132         &msm_device_otg,
 133         &msm_device_hsusb,
 134         &msm_device_hsusb_host,
 135 };
 136
 137 static void __init msm7x30_init_irq(void)
 138 {
 139         msm_init_irq();
 140 }
 141
 142 static void __init msm7x30_init(void)
 143 {
 144         msm_device_otg.dev.platform_data = &msm_otg_pdata;
 145         msm_device_hsusb.dev.parent = &msm_device_otg.dev;
 146         msm_device_hsusb_host.dev.parent = &msm_device_otg.dev;
 147
 148         platform_add_devices(devices, ARRAY_SIZE(devices));
 149 }
 150
 151 static void __init msm7x30_map_io(void)
 152 {
 153         msm_map_msm7x30_io();
 154 }
 155
 156 static void __init msm7x30_init_late(void)
 157 {
 158         smd_debugfs_init();
 159 }
 160
 161 MACHINE_START(MSM7X30_SURF, "QCT MSM7X30 SURF")
 162         .atag_offset = 0x100,
 163         .fixup = msm7x30_fixup,
 164         .reserve = msm7x30_reserve,
 165         .map_io = msm7x30_map_io,
 166         .init_irq = msm7x30_init_irq,
 167         .init_machine = msm7x30_init,
 168         .init_late = msm7x30_init_late,
 169         .init_time      = msm7x30_timer_init,
 170 MACHINE_END
 171
 172 MACHINE_START(MSM7X30_FFA, "QCT MSM7X30 FFA")
 173         .atag_offset = 0x100,
 174         .fixup = msm7x30_fixup,
 175         .reserve = msm7x30_reserve,
 176         .map_io = msm7x30_map_io,
 177         .init_irq = msm7x30_init_irq,
 178         .init_machine = msm7x30_init,
 179         .init_late = msm7x30_init_late,
 180         .init_time      = msm7x30_timer_init,
 181 MACHINE_END
 182
 183 MACHINE_START(MSM7X30_FLUID, "QCT MSM7X30 FLUID")
 184         .atag_offset = 0x100,
 185         .fixup = msm7x30_fixup,
 186         .reserve = msm7x30_reserve,
 187         .map_io = msm7x30_map_io,
 188         .init_irq = msm7x30_init_irq,
 189         .init_machine = msm7x30_init,
 190         .init_late = msm7x30_init_late,
 191         .init_time      = msm7x30_timer_init,
 192 MACHINE_END