arch/arm/mach-iop32x/glantank.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * arch/arm/mach-iop32x/glantank.c
   4  *
   5  * Board support code for the GLAN Tank.
   6  *
   7  * Copyright (C) 2006, 2007 Martin Michlmayr <tbm@cyrius.com>
   8  * Copyright (C) 2006 Lennert Buytenhek <buytenh@wantstofly.org>
   9  */
  10
  11 #include <linux/mm.h>
  12 #include <linux/init.h>
  13 #include <linux/f75375s.h>
  14 #include <linux/kernel.h>
  15 #include <linux/pci.h>
  16 #include <linux/pm.h>
  17 #include <linux/string.h>
  18 #include <linux/serial_core.h>
  19 #include <linux/serial_8250.h>
  20 #include <linux/mtd/physmap.h>
  21 #include <linux/i2c.h>
  22 #include <linux/platform_device.h>
  23 #include <linux/io.h>
  24 #include <linux/gpio/machine.h>
  25 #include <asm/irq.h>
  26 #include <asm/mach/arch.h>
  27 #include <asm/mach/map.h>
  28 #include <asm/mach/pci.h>
  29 #include <asm/mach/time.h>
  30 #include <asm/mach-types.h>
  31 #include <asm/page.h>
  32
  33 #include "hardware.h"
  34 #include "gpio-iop32x.h"
  35 #include "irqs.h"
  36
  37 /*
  38  * GLAN Tank timer tick configuration.
  39  */
  40 static void __init glantank_timer_init(void)
  41 {
  42         /* 33.333 MHz crystal.  */
  43         iop_init_time(200000000);
  44 }
  45
  46
  47 /*
  48  * GLAN Tank I/O.
  49  */
  50 static struct map_desc glantank_io_desc[] __initdata = {
  51         {       /* on-board devices */
  52                 .virtual        = GLANTANK_UART,
  53                 .pfn            = __phys_to_pfn(GLANTANK_UART),
  54                 .length         = 0x00100000,
  55                 .type           = MT_DEVICE
  56         },
  57 };
  58
  59 void __init glantank_map_io(void)
  60 {
  61         iop3xx_map_io();
  62         iotable_init(glantank_io_desc, ARRAY_SIZE(glantank_io_desc));
  63 }
  64
  65
  66 /*
  67  * GLAN Tank PCI.
  68  */
  69 #define INTA    IRQ_IOP32X_XINT0
  70 #define INTB    IRQ_IOP32X_XINT1
  71 #define INTC    IRQ_IOP32X_XINT2
  72 #define INTD    IRQ_IOP32X_XINT3
  73
  74 static int __init
  75 glantank_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
  76 {
  77         static int pci_irq_table[][4] = {
  78                 /*
  79                  * PCI IDSEL/INTPIN->INTLINE
  80                  * A       B       C       D
  81                  */
  82                 {INTD, INTD, INTD, INTD}, /* UART (8250) */
  83                 {INTA, INTA, INTA, INTA}, /* Ethernet (E1000) */
  84                 {INTB, INTB, INTB, INTB}, /* IDE (AEC6280R) */
  85                 {INTC, INTC, INTC, INTC}, /* USB (NEC) */
  86         };
  87
  88         BUG_ON(pin < 1 || pin > 4);
  89
  90         return pci_irq_table[slot % 4][pin - 1];
  91 }
  92
  93 static struct hw_pci glantank_pci __initdata = {
  94         .nr_controllers = 1,
  95         .ops            = &iop3xx_ops,
  96         .setup          = iop3xx_pci_setup,
  97         .preinit        = iop3xx_pci_preinit,
  98         .map_irq        = glantank_pci_map_irq,
  99 };
 100
 101 static int __init glantank_pci_init(void)
 102 {
 103         if (machine_is_glantank())
 104                 pci_common_init(&glantank_pci);
 105
 106         return 0;
 107 }
 108
 109 subsys_initcall(glantank_pci_init);
 110
 111
 112 /*
 113  * GLAN Tank machine initialization.
 114  */
 115 static struct physmap_flash_data glantank_flash_data = {
 116         .width          = 2,
 117 };
 118
 119 static struct resource glantank_flash_resource = {
 120         .start          = 0xf0000000,
 121         .end            = 0xf007ffff,
 122         .flags          = IORESOURCE_MEM,
 123 };
 124
 125 static struct platform_device glantank_flash_device = {
 126         .name           = "physmap-flash",
 127         .id             = 0,
 128         .dev            = {
 129                 .platform_data  = &glantank_flash_data,
 130         },
 131         .num_resources  = 1,
 132         .resource       = &glantank_flash_resource,
 133 };
 134
 135 static struct plat_serial8250_port glantank_serial_port[] = {
 136         {
 137                 .mapbase        = GLANTANK_UART,
 138                 .membase        = (char *)GLANTANK_UART,
 139                 .irq            = IRQ_IOP32X_XINT3,
 140                 .flags          = UPF_SKIP_TEST,
 141                 .iotype         = UPIO_MEM,
 142                 .regshift       = 0,
 143                 .uartclk        = 1843200,
 144         },
 145         { },
 146 };
 147
 148 static struct resource glantank_uart_resource = {
 149         .start          = GLANTANK_UART,
 150         .end            = GLANTANK_UART + 7,
 151         .flags          = IORESOURCE_MEM,
 152 };
 153
 154 static struct platform_device glantank_serial_device = {
 155         .name           = "serial8250",
 156         .id             = PLAT8250_DEV_PLATFORM,
 157         .dev            = {
 158                 .platform_data          = glantank_serial_port,
 159         },
 160         .num_resources  = 1,
 161         .resource       = &glantank_uart_resource,
 162 };
 163
 164 static struct f75375s_platform_data glantank_f75375s = {
 165         .pwm            = { 255, 255 },
 166         .pwm_enable     = { 0, 0 },
 167 };
 168
 169 static struct i2c_board_info __initdata glantank_i2c_devices[] = {
 170         {
 171                 I2C_BOARD_INFO("rs5c372a", 0x32),
 172         },
 173         {
 174                 I2C_BOARD_INFO("f75375", 0x2e),
 175                 .platform_data = &glantank_f75375s,
 176         },
 177 };
 178
 179 static void glantank_power_off(void)
 180 {
 181         __raw_writeb(0x01, IOMEM(0xfe8d0004));
 182
 183         while (1)
 184                 ;
 185 }
 186
 187 static void __init glantank_init_machine(void)
 188 {
 189         register_iop32x_gpio();
 190         gpiod_add_lookup_table(&iop3xx_i2c0_gpio_lookup);
 191         gpiod_add_lookup_table(&iop3xx_i2c1_gpio_lookup);
 192         platform_device_register(&iop3xx_i2c0_device);
 193         platform_device_register(&iop3xx_i2c1_device);
 194         platform_device_register(&glantank_flash_device);
 195         platform_device_register(&glantank_serial_device);
 196         platform_device_register(&iop3xx_dma_0_channel);
 197         platform_device_register(&iop3xx_dma_1_channel);
 198
 199         i2c_register_board_info(0, glantank_i2c_devices,
 200                 ARRAY_SIZE(glantank_i2c_devices));
 201
 202         pm_power_off = glantank_power_off;
 203 }
 204
 205 MACHINE_START(GLANTANK, "GLAN Tank")
 206         /* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */
 207         .atag_offset    = 0x100,
 208         .map_io         = glantank_map_io,
 209         .init_irq       = iop32x_init_irq,
 210         .init_time      = glantank_timer_init,
 211         .init_machine   = glantank_init_machine,
 212         .restart        = iop3xx_restart,
 213 MACHINE_END