| David Brazdil | 0f672f6 | 2019-12-10 10:32:29 +0000 | [diff] [blame^] | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 2 | /* |
| 3 | * NEC VR4100 series SIU platform device. |
| 4 | * |
| 5 | * Copyright (C) 2007-2008 Yoichi Yuasa <yuasa@linux-mips.org> |
| Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 6 | */ |
| 7 | #include <linux/errno.h> |
| 8 | #include <linux/init.h> |
| 9 | #include <linux/ioport.h> |
| 10 | #include <linux/platform_device.h> |
| 11 | #include <linux/serial_core.h> |
| 12 | #include <linux/irq.h> |
| 13 | |
| 14 | #include <asm/cpu.h> |
| 15 | #include <asm/vr41xx/siu.h> |
| 16 | |
| 17 | static unsigned int siu_type1_ports[SIU_PORTS_MAX] __initdata = { |
| 18 | PORT_VR41XX_SIU, |
| 19 | PORT_UNKNOWN, |
| 20 | }; |
| 21 | |
| 22 | static struct resource siu_type1_resource[] __initdata = { |
| 23 | { |
| 24 | .start = 0x0c000000, |
| 25 | .end = 0x0c00000a, |
| 26 | .flags = IORESOURCE_MEM, |
| 27 | }, |
| 28 | { |
| 29 | .start = SIU_IRQ, |
| 30 | .end = SIU_IRQ, |
| 31 | .flags = IORESOURCE_IRQ, |
| 32 | }, |
| 33 | }; |
| 34 | |
| 35 | static unsigned int siu_type2_ports[SIU_PORTS_MAX] __initdata = { |
| 36 | PORT_VR41XX_SIU, |
| 37 | PORT_VR41XX_DSIU, |
| 38 | }; |
| 39 | |
| 40 | static struct resource siu_type2_resource[] __initdata = { |
| 41 | { |
| 42 | .start = 0x0f000800, |
| 43 | .end = 0x0f00080a, |
| 44 | .flags = IORESOURCE_MEM, |
| 45 | }, |
| 46 | { |
| 47 | .start = 0x0f000820, |
| 48 | .end = 0x0f000829, |
| 49 | .flags = IORESOURCE_MEM, |
| 50 | }, |
| 51 | { |
| 52 | .start = SIU_IRQ, |
| 53 | .end = SIU_IRQ, |
| 54 | .flags = IORESOURCE_IRQ, |
| 55 | }, |
| 56 | { |
| 57 | .start = DSIU_IRQ, |
| 58 | .end = DSIU_IRQ, |
| 59 | .flags = IORESOURCE_IRQ, |
| 60 | }, |
| 61 | }; |
| 62 | |
| 63 | static int __init vr41xx_siu_add(void) |
| 64 | { |
| 65 | struct platform_device *pdev; |
| 66 | struct resource *res; |
| 67 | unsigned int num; |
| 68 | int retval; |
| 69 | |
| 70 | pdev = platform_device_alloc("SIU", -1); |
| 71 | if (!pdev) |
| 72 | return -ENOMEM; |
| 73 | |
| 74 | switch (current_cpu_type()) { |
| 75 | case CPU_VR4111: |
| 76 | case CPU_VR4121: |
| 77 | pdev->dev.platform_data = siu_type1_ports; |
| 78 | res = siu_type1_resource; |
| 79 | num = ARRAY_SIZE(siu_type1_resource); |
| 80 | break; |
| 81 | case CPU_VR4122: |
| 82 | case CPU_VR4131: |
| 83 | case CPU_VR4133: |
| 84 | pdev->dev.platform_data = siu_type2_ports; |
| 85 | res = siu_type2_resource; |
| 86 | num = ARRAY_SIZE(siu_type2_resource); |
| 87 | break; |
| 88 | default: |
| 89 | retval = -ENODEV; |
| 90 | goto err_free_device; |
| 91 | } |
| 92 | |
| 93 | retval = platform_device_add_resources(pdev, res, num); |
| 94 | if (retval) |
| 95 | goto err_free_device; |
| 96 | |
| 97 | retval = platform_device_add(pdev); |
| 98 | if (retval) |
| 99 | goto err_free_device; |
| 100 | |
| 101 | return 0; |
| 102 | |
| 103 | err_free_device: |
| 104 | platform_device_put(pdev); |
| 105 | |
| 106 | return retval; |
| 107 | } |
| 108 | device_initcall(vr41xx_siu_add); |
| 109 | |
| 110 | void __init vr41xx_siu_setup(void) |
| 111 | { |
| 112 | struct uart_port port; |
| 113 | struct resource *res; |
| 114 | unsigned int *type; |
| 115 | int i; |
| 116 | |
| 117 | switch (current_cpu_type()) { |
| 118 | case CPU_VR4111: |
| 119 | case CPU_VR4121: |
| 120 | type = siu_type1_ports; |
| 121 | res = siu_type1_resource; |
| 122 | break; |
| 123 | case CPU_VR4122: |
| 124 | case CPU_VR4131: |
| 125 | case CPU_VR4133: |
| 126 | type = siu_type2_ports; |
| 127 | res = siu_type2_resource; |
| 128 | break; |
| 129 | default: |
| 130 | return; |
| 131 | } |
| 132 | |
| 133 | for (i = 0; i < SIU_PORTS_MAX; i++) { |
| 134 | port.line = i; |
| 135 | port.type = type[i]; |
| 136 | if (port.type == PORT_UNKNOWN) |
| 137 | break; |
| 138 | port.mapbase = res[i].start; |
| 139 | port.membase = (unsigned char __iomem *)KSEG1ADDR(res[i].start); |
| 140 | vr41xx_siu_early_setup(&port); |
| 141 | } |
| 142 | } |