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1 | /* |
2 | * arch/powerpc/platforms/83xx/mpc832x_rdb.c | |
3 | * | |
4 | * Copyright (C) Freescale Semiconductor, Inc. 2007. All rights reserved. | |
5 | * | |
6 | * Description: | |
7 | * MPC832x RDB board specific routines. | |
8 | * This file is based on mpc832x_mds.c and mpc8313_rdb.c | |
9 | * Author: Michael Barkowski <michael.barkowski@freescale.com> | |
10 | * | |
11 | * This program is free software; you can redistribute it and/or modify it | |
12 | * under the terms of the GNU General Public License as published by the | |
13 | * Free Software Foundation; either version 2 of the License, or (at your | |
14 | * option) any later version. | |
15 | */ | |
16 | ||
17 | #include <linux/pci.h> | |
ba3bdff5 | 18 | #include <linux/interrupt.h> |
8237bf08 | 19 | #include <linux/spi/spi.h> |
ba3bdff5 AV |
20 | #include <linux/spi/mmc_spi.h> |
21 | #include <linux/mmc/host.h> | |
882407b9 | 22 | #include <linux/of_platform.h> |
23308c54 | 23 | |
23308c54 MB |
24 | #include <asm/time.h> |
25 | #include <asm/ipic.h> | |
26 | #include <asm/udbg.h> | |
27 | #include <asm/qe.h> | |
28 | #include <asm/qe_ic.h> | |
8237bf08 | 29 | #include <sysdev/fsl_soc.h> |
76fe1ffc | 30 | #include <sysdev/fsl_pci.h> |
23308c54 MB |
31 | |
32 | #include "mpc83xx.h" | |
33 | ||
34 | #undef DEBUG | |
35 | #ifdef DEBUG | |
36 | #define DBG(fmt...) udbg_printf(fmt) | |
37 | #else | |
38 | #define DBG(fmt...) | |
39 | #endif | |
40 | ||
20cfb41b | 41 | #ifdef CONFIG_QUICC_ENGINE |
364fdbc0 | 42 | static void mpc83xx_spi_cs_control(struct spi_device *spi, bool on) |
8237bf08 | 43 | { |
364fdbc0 AV |
44 | pr_debug("%s %d %d\n", __func__, spi->chip_select, on); |
45 | par_io_data_set(3, 13, on); | |
8237bf08 AV |
46 | } |
47 | ||
ba3bdff5 AV |
48 | static struct mmc_spi_platform_data mpc832x_mmc_pdata = { |
49 | .ocr_mask = MMC_VDD_33_34, | |
50 | }; | |
51 | ||
8237bf08 AV |
52 | static struct spi_board_info mpc832x_spi_boardinfo = { |
53 | .bus_num = 0x4c0, | |
54 | .chip_select = 0, | |
55 | .max_speed_hz = 50000000, | |
ba3bdff5 AV |
56 | .modalias = "mmc_spi", |
57 | .platform_data = &mpc832x_mmc_pdata, | |
8237bf08 AV |
58 | }; |
59 | ||
60 | static int __init mpc832x_spi_init(void) | |
61 | { | |
8237bf08 AV |
62 | par_io_config_pin(3, 0, 3, 0, 1, 0); /* SPI1 MOSI, I/O */ |
63 | par_io_config_pin(3, 1, 3, 0, 1, 0); /* SPI1 MISO, I/O */ | |
64 | par_io_config_pin(3, 2, 3, 0, 1, 0); /* SPI1 CLK, I/O */ | |
65 | par_io_config_pin(3, 3, 2, 0, 1, 0); /* SPI1 SEL, I */ | |
66 | ||
67 | par_io_config_pin(3, 13, 1, 0, 0, 0); /* !SD_CS, O */ | |
68 | par_io_config_pin(3, 14, 2, 0, 0, 0); /* SD_INSERT, I */ | |
69 | par_io_config_pin(3, 15, 2, 0, 0, 0); /* SD_PROTECT,I */ | |
70 | ||
75458285 AV |
71 | /* |
72 | * Don't bother with legacy stuff when device tree contains | |
73 | * mmc-spi-slot node. | |
74 | */ | |
75 | if (of_find_compatible_node(NULL, NULL, "mmc-spi-slot")) | |
76 | return 0; | |
364fdbc0 | 77 | return fsl_spi_init(&mpc832x_spi_boardinfo, 1, mpc83xx_spi_cs_control); |
8237bf08 | 78 | } |
6392f184 | 79 | machine_device_initcall(mpc832x_rdb, mpc832x_spi_init); |
20cfb41b | 80 | #endif /* CONFIG_QUICC_ENGINE */ |
8237bf08 | 81 | |
23308c54 MB |
82 | /* ************************************************************************ |
83 | * | |
84 | * Setup the architecture | |
85 | * | |
86 | */ | |
87 | static void __init mpc832x_rdb_setup_arch(void) | |
88 | { | |
c9ec87e5 | 89 | #if defined(CONFIG_PCI) || defined(CONFIG_QUICC_ENGINE) |
23308c54 | 90 | struct device_node *np; |
c9ec87e5 | 91 | #endif |
23308c54 MB |
92 | |
93 | if (ppc_md.progress) | |
94 | ppc_md.progress("mpc832x_rdb_setup_arch()", 0); | |
95 | ||
96 | #ifdef CONFIG_PCI | |
c9438aff | 97 | for_each_compatible_node(np, "pci", "fsl,mpc8349-pci") |
09b55f76 | 98 | mpc83xx_add_bridge(np); |
23308c54 MB |
99 | #endif |
100 | ||
101 | #ifdef CONFIG_QUICC_ENGINE | |
102 | qe_reset(); | |
103 | ||
aafa1955 | 104 | if ((np = of_find_node_by_name(NULL, "par_io")) != NULL) { |
23308c54 MB |
105 | par_io_init(np); |
106 | of_node_put(np); | |
107 | ||
108 | for (np = NULL; (np = of_find_node_by_name(np, "ucc")) != NULL;) | |
109 | par_io_of_config(np); | |
110 | } | |
111 | #endif /* CONFIG_QUICC_ENGINE */ | |
112 | } | |
113 | ||
114 | static struct of_device_id mpc832x_ids[] = { | |
115 | { .type = "soc", }, | |
116 | { .compatible = "soc", }, | |
cf0d19fb | 117 | { .compatible = "simple-bus", }, |
23308c54 | 118 | { .type = "qe", }, |
a2dd70a1 | 119 | { .compatible = "fsl,qe", }, |
23308c54 MB |
120 | {}, |
121 | }; | |
122 | ||
123 | static int __init mpc832x_declare_of_platform_devices(void) | |
124 | { | |
23308c54 MB |
125 | /* Publish the QE devices */ |
126 | of_platform_bus_probe(NULL, mpc832x_ids, NULL); | |
127 | ||
128 | return 0; | |
129 | } | |
6392f184 | 130 | machine_device_initcall(mpc832x_rdb, mpc832x_declare_of_platform_devices); |
23308c54 | 131 | |
81b36a0b | 132 | static void __init mpc832x_rdb_init_IRQ(void) |
23308c54 MB |
133 | { |
134 | ||
135 | struct device_node *np; | |
136 | ||
137 | np = of_find_node_by_type(NULL, "ipic"); | |
138 | if (!np) | |
139 | return; | |
140 | ||
141 | ipic_init(np, 0); | |
142 | ||
143 | /* Initialize the default interrupt mapping priorities, | |
144 | * in case the boot rom changed something on us. | |
145 | */ | |
146 | ipic_set_default_priority(); | |
147 | of_node_put(np); | |
148 | ||
149 | #ifdef CONFIG_QUICC_ENGINE | |
a2dd70a1 AV |
150 | np = of_find_compatible_node(NULL, NULL, "fsl,qe-ic"); |
151 | if (!np) { | |
152 | np = of_find_node_by_type(NULL, "qeic"); | |
153 | if (!np) | |
154 | return; | |
155 | } | |
cccd2102 | 156 | qe_ic_init(np, 0, qe_ic_cascade_low_ipic, qe_ic_cascade_high_ipic); |
23308c54 MB |
157 | of_node_put(np); |
158 | #endif /* CONFIG_QUICC_ENGINE */ | |
159 | } | |
160 | ||
161 | /* | |
162 | * Called very early, MMU is off, device-tree isn't unflattened | |
163 | */ | |
164 | static int __init mpc832x_rdb_probe(void) | |
165 | { | |
166 | unsigned long root = of_get_flat_dt_root(); | |
167 | ||
168 | return of_flat_dt_is_compatible(root, "MPC832xRDB"); | |
169 | } | |
170 | ||
171 | define_machine(mpc832x_rdb) { | |
172 | .name = "MPC832x RDB", | |
173 | .probe = mpc832x_rdb_probe, | |
174 | .setup_arch = mpc832x_rdb_setup_arch, | |
175 | .init_IRQ = mpc832x_rdb_init_IRQ, | |
176 | .get_irq = ipic_get_irq, | |
177 | .restart = mpc83xx_restart, | |
178 | .time_init = mpc83xx_time_init, | |
179 | .calibrate_decr = generic_calibrate_decr, | |
180 | .progress = udbg_progress, | |
181 | }; |