| xj | b04a402 | 2021-11-25 15:01:52 +0800 | [diff] [blame] | 1 | /* |
| 2 | * This file is subject to the terms and conditions of the GNU General Public |
| 3 | * License. See the file "COPYING" in the main directory of this archive |
| 4 | * for more details. |
| 5 | * |
| 6 | * Copyright (C) 2008 Maxime Bizon <mbizon@freebox.fr> |
| 7 | */ |
| 8 | |
| 9 | #include <linux/init.h> |
| 10 | #include <linux/kernel.h> |
| 11 | #include <asm/bootinfo.h> |
| 12 | #include <linux/platform_device.h> |
| 13 | #include <bcm63xx_cs.h> |
| 14 | #include <bcm63xx_cpu.h> |
| 15 | #include <bcm63xx_dev_pcmcia.h> |
| 16 | #include <bcm63xx_io.h> |
| 17 | #include <bcm63xx_regs.h> |
| 18 | |
| 19 | static struct resource pcmcia_resources[] = { |
| 20 | /* pcmcia registers */ |
| 21 | { |
| 22 | /* start & end filled at runtime */ |
| 23 | .flags = IORESOURCE_MEM, |
| 24 | }, |
| 25 | |
| 26 | /* pcmcia memory zone resources */ |
| 27 | { |
| 28 | .start = BCM_PCMCIA_COMMON_BASE_PA, |
| 29 | .end = BCM_PCMCIA_COMMON_END_PA, |
| 30 | .flags = IORESOURCE_MEM, |
| 31 | }, |
| 32 | { |
| 33 | .start = BCM_PCMCIA_ATTR_BASE_PA, |
| 34 | .end = BCM_PCMCIA_ATTR_END_PA, |
| 35 | .flags = IORESOURCE_MEM, |
| 36 | }, |
| 37 | { |
| 38 | .start = BCM_PCMCIA_IO_BASE_PA, |
| 39 | .end = BCM_PCMCIA_IO_END_PA, |
| 40 | .flags = IORESOURCE_MEM, |
| 41 | }, |
| 42 | |
| 43 | /* PCMCIA irq */ |
| 44 | { |
| 45 | /* start filled at runtime */ |
| 46 | .flags = IORESOURCE_IRQ, |
| 47 | }, |
| 48 | |
| 49 | /* declare PCMCIA IO resource also */ |
| 50 | { |
| 51 | .start = BCM_PCMCIA_IO_BASE_PA, |
| 52 | .end = BCM_PCMCIA_IO_END_PA, |
| 53 | .flags = IORESOURCE_IO, |
| 54 | }, |
| 55 | }; |
| 56 | |
| 57 | static struct bcm63xx_pcmcia_platform_data pd; |
| 58 | |
| 59 | static struct platform_device bcm63xx_pcmcia_device = { |
| 60 | .name = "bcm63xx_pcmcia", |
| 61 | .id = 0, |
| 62 | .num_resources = ARRAY_SIZE(pcmcia_resources), |
| 63 | .resource = pcmcia_resources, |
| 64 | .dev = { |
| 65 | .platform_data = &pd, |
| 66 | }, |
| 67 | }; |
| 68 | |
| 69 | static int __init config_pcmcia_cs(unsigned int cs, |
| 70 | u32 base, unsigned int size) |
| 71 | { |
| 72 | int ret; |
| 73 | |
| 74 | ret = bcm63xx_set_cs_status(cs, 0); |
| 75 | if (!ret) |
| 76 | ret = bcm63xx_set_cs_base(cs, base, size); |
| 77 | if (!ret) |
| 78 | ret = bcm63xx_set_cs_status(cs, 1); |
| 79 | return ret; |
| 80 | } |
| 81 | |
| 82 | static const struct { |
| 83 | unsigned int cs; |
| 84 | unsigned int base; |
| 85 | unsigned int size; |
| 86 | } pcmcia_cs[3] __initconst = { |
| 87 | { |
| 88 | .cs = MPI_CS_PCMCIA_COMMON, |
| 89 | .base = BCM_PCMCIA_COMMON_BASE_PA, |
| 90 | .size = BCM_PCMCIA_COMMON_SIZE |
| 91 | }, |
| 92 | { |
| 93 | .cs = MPI_CS_PCMCIA_ATTR, |
| 94 | .base = BCM_PCMCIA_ATTR_BASE_PA, |
| 95 | .size = BCM_PCMCIA_ATTR_SIZE |
| 96 | }, |
| 97 | { |
| 98 | .cs = MPI_CS_PCMCIA_IO, |
| 99 | .base = BCM_PCMCIA_IO_BASE_PA, |
| 100 | .size = BCM_PCMCIA_IO_SIZE |
| 101 | }, |
| 102 | }; |
| 103 | |
| 104 | int __init bcm63xx_pcmcia_register(void) |
| 105 | { |
| 106 | int ret, i; |
| 107 | |
| 108 | if (!BCMCPU_IS_6348() && !BCMCPU_IS_6358()) |
| 109 | return 0; |
| 110 | |
| 111 | /* use correct pcmcia ready gpio depending on processor */ |
| 112 | switch (bcm63xx_get_cpu_id()) { |
| 113 | case BCM6348_CPU_ID: |
| 114 | pd.ready_gpio = 22; |
| 115 | break; |
| 116 | |
| 117 | case BCM6358_CPU_ID: |
| 118 | pd.ready_gpio = 18; |
| 119 | break; |
| 120 | |
| 121 | default: |
| 122 | return -ENODEV; |
| 123 | } |
| 124 | |
| 125 | pcmcia_resources[0].start = bcm63xx_regset_address(RSET_PCMCIA); |
| 126 | pcmcia_resources[0].end = pcmcia_resources[0].start + |
| 127 | RSET_PCMCIA_SIZE - 1; |
| 128 | pcmcia_resources[4].start = bcm63xx_get_irq_number(IRQ_PCMCIA); |
| 129 | |
| 130 | /* configure pcmcia chip selects */ |
| 131 | for (i = 0; i < 3; i++) { |
| 132 | ret = config_pcmcia_cs(pcmcia_cs[i].cs, |
| 133 | pcmcia_cs[i].base, |
| 134 | pcmcia_cs[i].size); |
| 135 | if (ret) |
| 136 | goto out_err; |
| 137 | } |
| 138 | |
| 139 | return platform_device_register(&bcm63xx_pcmcia_device); |
| 140 | |
| 141 | out_err: |
| 142 | pr_err("unable to set pcmcia chip select\n"); |
| 143 | return ret; |
| 144 | } |