.. | .. |
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| 1 | +// SPDX-License-Identifier: GPL-2.0-only |
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1 | 2 | /* |
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2 | 3 | * linux/drivers/pcmcia/pxa2xx_mainstone.c |
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3 | 4 | * |
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.. | .. |
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6 | 7 | * Created: May 12, 2004 |
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7 | 8 | * Author: Nicolas Pitre |
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8 | 9 | * Copyright: MontaVista Software Inc. |
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9 | | - * |
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10 | | - * This program is free software; you can redistribute it and/or modify |
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11 | | - * it under the terms of the GNU General Public License version 2 as |
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12 | | - * published by the Free Software Foundation. |
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13 | 10 | */ |
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14 | | - |
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| 11 | +#include <linux/gpio/consumer.h> |
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15 | 12 | #include <linux/module.h> |
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16 | 13 | #include <linux/init.h> |
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| 14 | +#include <linux/interrupt.h> |
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17 | 15 | #include <linux/kernel.h> |
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18 | 16 | #include <linux/errno.h> |
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19 | | -#include <linux/interrupt.h> |
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20 | 17 | #include <linux/platform_device.h> |
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21 | 18 | |
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22 | 19 | #include <pcmcia/ss.h> |
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23 | 20 | |
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24 | 21 | #include <asm/mach-types.h> |
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25 | | -#include <asm/irq.h> |
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26 | | - |
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27 | | -#include <mach/pxa2xx-regs.h> |
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28 | | -#include <mach/mainstone.h> |
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29 | 22 | |
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30 | 23 | #include "soc_common.h" |
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31 | | - |
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| 24 | +#include "max1600.h" |
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32 | 25 | |
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33 | 26 | static int mst_pcmcia_hw_init(struct soc_pcmcia_socket *skt) |
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34 | 27 | { |
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35 | | - /* |
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36 | | - * Setup default state of GPIO outputs |
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37 | | - * before we enable them as outputs. |
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38 | | - */ |
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39 | | - if (skt->nr == 0) { |
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40 | | - skt->socket.pci_irq = MAINSTONE_S0_IRQ; |
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41 | | - skt->stat[SOC_STAT_CD].irq = MAINSTONE_S0_CD_IRQ; |
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42 | | - skt->stat[SOC_STAT_CD].name = "PCMCIA0 CD"; |
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43 | | - skt->stat[SOC_STAT_BVD1].irq = MAINSTONE_S0_STSCHG_IRQ; |
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44 | | - skt->stat[SOC_STAT_BVD1].name = "PCMCIA0 STSCHG"; |
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45 | | - } else { |
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46 | | - skt->socket.pci_irq = MAINSTONE_S1_IRQ; |
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47 | | - skt->stat[SOC_STAT_CD].irq = MAINSTONE_S1_CD_IRQ; |
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48 | | - skt->stat[SOC_STAT_CD].name = "PCMCIA1 CD"; |
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49 | | - skt->stat[SOC_STAT_BVD1].irq = MAINSTONE_S1_STSCHG_IRQ; |
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50 | | - skt->stat[SOC_STAT_BVD1].name = "PCMCIA1 STSCHG"; |
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51 | | - } |
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52 | | - return 0; |
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| 28 | + struct device *dev = skt->socket.dev.parent; |
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| 29 | + struct max1600 *m; |
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| 30 | + int ret; |
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| 31 | + |
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| 32 | + skt->stat[SOC_STAT_CD].name = skt->nr ? "bdetect" : "adetect"; |
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| 33 | + skt->stat[SOC_STAT_BVD1].name = skt->nr ? "bbvd1" : "abvd1"; |
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| 34 | + skt->stat[SOC_STAT_BVD2].name = skt->nr ? "bbvd2" : "abvd2"; |
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| 35 | + skt->stat[SOC_STAT_RDY].name = skt->nr ? "bready" : "aready"; |
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| 36 | + skt->stat[SOC_STAT_VS1].name = skt->nr ? "bvs1" : "avs1"; |
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| 37 | + skt->stat[SOC_STAT_VS2].name = skt->nr ? "bvs2" : "avs2"; |
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| 38 | + |
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| 39 | + skt->gpio_reset = devm_gpiod_get(dev, skt->nr ? "breset" : "areset", |
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| 40 | + GPIOD_OUT_HIGH); |
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| 41 | + if (IS_ERR(skt->gpio_reset)) |
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| 42 | + return PTR_ERR(skt->gpio_reset); |
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| 43 | + |
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| 44 | + ret = max1600_init(dev, &m, skt->nr ? MAX1600_CHAN_B : MAX1600_CHAN_A, |
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| 45 | + MAX1600_CODE_HIGH); |
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| 46 | + if (ret) |
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| 47 | + return ret; |
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| 48 | + |
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| 49 | + skt->driver_data = m; |
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| 50 | + |
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| 51 | + return soc_pcmcia_request_gpiods(skt); |
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53 | 52 | } |
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54 | 53 | |
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55 | | -static unsigned long mst_pcmcia_status[2]; |
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| 54 | +static unsigned int mst_pcmcia_bvd1_status[2]; |
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56 | 55 | |
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57 | 56 | static void mst_pcmcia_socket_state(struct soc_pcmcia_socket *skt, |
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58 | 57 | struct pcmcia_state *state) |
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59 | 58 | { |
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60 | | - unsigned long status, flip; |
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61 | | - |
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62 | | - status = (skt->nr == 0) ? MST_PCMCIA0 : MST_PCMCIA1; |
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63 | | - flip = (status ^ mst_pcmcia_status[skt->nr]) & MST_PCMCIA_nSTSCHG_BVD1; |
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| 59 | + unsigned int flip = mst_pcmcia_bvd1_status[skt->nr] ^ state->bvd1; |
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64 | 60 | |
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65 | 61 | /* |
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66 | 62 | * Workaround for STSCHG which can't be deasserted: |
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.. | .. |
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68 | 64 | * as needed to avoid IRQ locks. |
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69 | 65 | */ |
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70 | 66 | if (flip) { |
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71 | | - mst_pcmcia_status[skt->nr] = status; |
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72 | | - if (status & MST_PCMCIA_nSTSCHG_BVD1) |
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73 | | - enable_irq( (skt->nr == 0) ? MAINSTONE_S0_STSCHG_IRQ |
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74 | | - : MAINSTONE_S1_STSCHG_IRQ ); |
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| 67 | + mst_pcmcia_bvd1_status[skt->nr] = state->bvd1; |
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| 68 | + if (state->bvd1) |
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| 69 | + enable_irq(skt->stat[SOC_STAT_BVD1].irq); |
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75 | 70 | else |
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76 | | - disable_irq( (skt->nr == 0) ? MAINSTONE_S0_STSCHG_IRQ |
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77 | | - : MAINSTONE_S1_STSCHG_IRQ ); |
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| 71 | + disable_irq(skt->stat[SOC_STAT_BVD2].irq); |
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78 | 72 | } |
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79 | | - |
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80 | | - state->detect = (status & MST_PCMCIA_nCD) ? 0 : 1; |
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81 | | - state->ready = (status & MST_PCMCIA_nIRQ) ? 1 : 0; |
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82 | | - state->bvd1 = (status & MST_PCMCIA_nSTSCHG_BVD1) ? 1 : 0; |
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83 | | - state->bvd2 = (status & MST_PCMCIA_nSPKR_BVD2) ? 1 : 0; |
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84 | | - state->vs_3v = (status & MST_PCMCIA_nVS1) ? 0 : 1; |
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85 | | - state->vs_Xv = (status & MST_PCMCIA_nVS2) ? 0 : 1; |
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86 | 73 | } |
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87 | 74 | |
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88 | 75 | static int mst_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, |
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89 | 76 | const socket_state_t *state) |
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90 | 77 | { |
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91 | | - unsigned long power = 0; |
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92 | | - int ret = 0; |
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93 | | - |
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94 | | - switch (state->Vcc) { |
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95 | | - case 0: power |= MST_PCMCIA_PWR_VCC_0; break; |
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96 | | - case 33: power |= MST_PCMCIA_PWR_VCC_33; break; |
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97 | | - case 50: power |= MST_PCMCIA_PWR_VCC_50; break; |
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98 | | - default: |
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99 | | - printk(KERN_ERR "%s(): bad Vcc %u\n", |
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100 | | - __func__, state->Vcc); |
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101 | | - ret = -1; |
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102 | | - } |
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103 | | - |
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104 | | - switch (state->Vpp) { |
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105 | | - case 0: power |= MST_PCMCIA_PWR_VPP_0; break; |
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106 | | - case 120: power |= MST_PCMCIA_PWR_VPP_120; break; |
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107 | | - default: |
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108 | | - if(state->Vpp == state->Vcc) { |
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109 | | - power |= MST_PCMCIA_PWR_VPP_VCC; |
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110 | | - } else { |
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111 | | - printk(KERN_ERR "%s(): bad Vpp %u\n", |
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112 | | - __func__, state->Vpp); |
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113 | | - ret = -1; |
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114 | | - } |
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115 | | - } |
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116 | | - |
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117 | | - if (state->flags & SS_RESET) |
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118 | | - power |= MST_PCMCIA_RESET; |
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119 | | - |
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120 | | - switch (skt->nr) { |
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121 | | - case 0: MST_PCMCIA0 = power; break; |
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122 | | - case 1: MST_PCMCIA1 = power; break; |
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123 | | - default: ret = -1; |
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124 | | - } |
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125 | | - |
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126 | | - return ret; |
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| 78 | + return max1600_configure(skt->driver_data, state->Vcc, state->Vpp); |
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127 | 79 | } |
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128 | 80 | |
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129 | 81 | static struct pcmcia_low_level mst_pcmcia_ops __initdata = { |
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