| 1 | /************************************************************************ |
| 2 | * |
| 3 | * Copyright (c) 2007 |
| 4 | * Infineon Technologies AG |
| 5 | * St. Martin Strasse 53; 81669 Muenchen; Germany |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or |
| 8 | * modify it under the terms of the GNU General Public License |
| 9 | * as published by the Free Software Foundation; either version |
| 10 | * 2 of the License, or (at your option) any later version. |
| 11 | * |
| 12 | ************************************************************************/ |
| 13 | |
| 14 | #include <linux/module.h> |
| 15 | #include <linux/types.h> |
| 16 | #include <linux/kernel.h> |
| 17 | #include <linux/proc_fs.h> |
| 18 | #include <linux/init.h> |
| 19 | #include <asm/addrspace.h> |
| 20 | #include <linux/platform_device.h> |
| 21 | |
| 22 | #include <lantiq_soc.h> |
| 23 | #include <svip_mux.h> |
| 24 | #include <sys1_reg.h> |
| 25 | #include <sys2_reg.h> |
| 26 | #include <svip_pms.h> |
| 27 | |
| 28 | #define DRV_NAME "ltq_mux" |
| 29 | |
| 30 | static void ltq_mux_port_init(const int port, |
| 31 | const struct ltq_mux_pin *pins, |
| 32 | const int pin_max) |
| 33 | { |
| 34 | unsigned int i; |
| 35 | |
| 36 | for (i = 0; i < pin_max; i++) |
| 37 | ltq_gpio_configure(port, |
| 38 | i, |
| 39 | pins[i].dirin, |
| 40 | pins[i].puen, |
| 41 | pins[i].altsel0, |
| 42 | pins[i].altsel1); |
| 43 | } |
| 44 | |
| 45 | static int ltq_mux_probe(struct platform_device *pdev) |
| 46 | { |
| 47 | struct ltq_mux_settings *mux_settings = dev_get_platdata(&pdev->dev); |
| 48 | |
| 49 | if (mux_settings->mux_p0) |
| 50 | ltq_mux_port_init(0, |
| 51 | mux_settings->mux_p0, |
| 52 | LTQ_MUX_P0_PINS); |
| 53 | |
| 54 | if (mux_settings->mux_p1) |
| 55 | ltq_mux_port_init(1, |
| 56 | mux_settings->mux_p1, |
| 57 | LTQ_MUX_P1_PINS); |
| 58 | |
| 59 | if (mux_settings->mux_p2) |
| 60 | ltq_mux_port_init(2, |
| 61 | mux_settings->mux_p2, |
| 62 | LTQ_MUX_P2_PINS); |
| 63 | |
| 64 | if (mux_settings->mux_p3) |
| 65 | ltq_mux_port_init(3, |
| 66 | mux_settings->mux_p3, |
| 67 | LTQ_MUX_P3_PINS); |
| 68 | |
| 69 | if (mux_settings->mux_p4) |
| 70 | ltq_mux_port_init(4, |
| 71 | mux_settings->mux_p4, |
| 72 | LTQ_MUX_P4_PINS); |
| 73 | |
| 74 | return 0; |
| 75 | } |
| 76 | |
| 77 | int ltq_mux_read_procmem(char *buf, char **start, off_t offset, |
| 78 | int count, int *eof, void *data) |
| 79 | { |
| 80 | int len = 0; |
| 81 | int t = 0, i = 0; |
| 82 | u32 port_clk[5] = { |
| 83 | SYS1_CLKENR_PORT0, |
| 84 | SYS1_CLKENR_PORT1, |
| 85 | SYS1_CLKENR_PORT2, |
| 86 | SYS1_CLKENR_PORT3, |
| 87 | SYS2_CLKENR_PORT4, |
| 88 | }; |
| 89 | |
| 90 | #define PROC_PRINT(fmt, args...) \ |
| 91 | do { \ |
| 92 | int c_len = 0; \ |
| 93 | c_len = snprintf(buf + len, count - len, fmt, ## args); \ |
| 94 | if (c_len <= 0) \ |
| 95 | goto out; \ |
| 96 | if (c_len >= (count - len)) { \ |
| 97 | len += (count - len); \ |
| 98 | goto out; \ |
| 99 | } \ |
| 100 | len += c_len; \ |
| 101 | if (offset > 0) { \ |
| 102 | if (len > offset) { \ |
| 103 | len -= offset; \ |
| 104 | memmove(buf, buf + offset, len); \ |
| 105 | offset = 0; \ |
| 106 | } else { \ |
| 107 | offset -= len; \ |
| 108 | len = 0; \ |
| 109 | } \ |
| 110 | } \ |
| 111 | } while (0) |
| 112 | |
| 113 | PROC_PRINT("\nVINETIC-SVIP Multiplex Settings\n"); |
| 114 | PROC_PRINT(" 3 2 1 0\n"); |
| 115 | PROC_PRINT(" 10987654321098765432109876543210\n"); |
| 116 | PROC_PRINT(" --------------------------------\n"); |
| 117 | |
| 118 | for (i = 0; i < ARRAY_SIZE(port_clk); i++) { |
| 119 | if (i < 4) { |
| 120 | if (!svip_sys1_clk_is_enabled(port_clk[i])) |
| 121 | continue; |
| 122 | } else { |
| 123 | if (!svip_sys2_clk_is_enabled(port_clk[i])) |
| 124 | continue; |
| 125 | } |
| 126 | |
| 127 | PROC_PRINT("P%d.%-10s", i, "DIR:"); |
| 128 | |
| 129 | for (t = 31; t != -1; t--) |
| 130 | PROC_PRINT("%d", ltq_port_get_dir(i, t) == 1 ? 1 : 0); |
| 131 | PROC_PRINT("\n"); |
| 132 | |
| 133 | PROC_PRINT("P%d.%-10s", i, "PUEN:"); |
| 134 | for (t = 31; t != -1; t--) |
| 135 | PROC_PRINT("%d", ltq_port_get_puden(i, t) == 1 ? 1 : 0); |
| 136 | PROC_PRINT("\n"); |
| 137 | |
| 138 | PROC_PRINT("P%d.%-10s", i, "ALTSEL0:"); |
| 139 | for (t = 31; t != -1; t--) |
| 140 | PROC_PRINT("%d", |
| 141 | ltq_port_get_altsel0(i, t) == 1 ? 1 : 0); |
| 142 | PROC_PRINT("\n"); |
| 143 | |
| 144 | PROC_PRINT("P%d.%-10s", i, "ALTSEL1:"); |
| 145 | for (t = 31; t != -1; t--) |
| 146 | PROC_PRINT("%d", |
| 147 | ltq_port_get_altsel1(i, t) == 1 ? 1 : 0); |
| 148 | PROC_PRINT("\n\n"); |
| 149 | } |
| 150 | |
| 151 | out: |
| 152 | if (len < 0) { |
| 153 | len = 0; |
| 154 | *eof = 1; |
| 155 | } else if (len < count) { |
| 156 | *eof = 1; |
| 157 | } else { |
| 158 | len = count; |
| 159 | } |
| 160 | |
| 161 | *start = buf; |
| 162 | |
| 163 | return len; |
| 164 | } |
| 165 | |
| 166 | static struct platform_driver ltq_mux_driver = { |
| 167 | .probe = ltq_mux_probe, |
| 168 | .driver = { |
| 169 | .name = DRV_NAME, |
| 170 | .owner = THIS_MODULE, |
| 171 | }, |
| 172 | }; |
| 173 | |
| 174 | int __init ltq_mux_init(void) |
| 175 | { |
| 176 | int ret = platform_driver_register(<q_mux_driver); |
| 177 | if (ret) { |
| 178 | printk(KERN_INFO DRV_NAME |
| 179 | ": Error registering platform driver!"); |
| 180 | return ret; |
| 181 | } |
| 182 | |
| 183 | return create_proc_read_entry("driver/ltq_mux", 0, NULL, |
| 184 | ltq_mux_read_procmem, NULL) == NULL; |
| 185 | } |
| 186 | |
| 187 | module_init(ltq_mux_init); |
| 188 | |
