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Linux/arch/powerpc/platforms/8xx/adder875.c

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  1 /* Analogue & Micro Adder MPC875 board support
  2  *
  3  * Author: Scott Wood <scottwood@freescale.com>
  4  *
  5  * Copyright (c) 2007 Freescale Semiconductor, Inc.
  6  *
  7  * This program is free software; you can redistribute  it and/or modify
  8  * it under the terms of the GNU General Public License, version 2, as
  9  * published by the Free Software Foundation.
 10  */
 11 
 12 #include <linux/init.h>
 13 #include <linux/fs_enet_pd.h>
 14 #include <linux/of_platform.h>
 15 
 16 #include <asm/time.h>
 17 #include <asm/machdep.h>
 18 #include <asm/cpm1.h>
 19 #include <asm/fs_pd.h>
 20 #include <asm/udbg.h>
 21 #include <asm/prom.h>
 22 
 23 #include "mpc8xx.h"
 24 
 25 struct cpm_pin {
 26         int port, pin, flags;
 27 };
 28 
 29 static __initdata struct cpm_pin adder875_pins[] = {
 30         /* SMC1 */
 31         {CPM_PORTB, 24, CPM_PIN_INPUT}, /* RX */
 32         {CPM_PORTB, 25, CPM_PIN_INPUT | CPM_PIN_SECONDARY}, /* TX */
 33 
 34         /* MII1 */
 35         {CPM_PORTA, 0, CPM_PIN_INPUT},
 36         {CPM_PORTA, 1, CPM_PIN_INPUT},
 37         {CPM_PORTA, 2, CPM_PIN_INPUT},
 38         {CPM_PORTA, 3, CPM_PIN_INPUT},
 39         {CPM_PORTA, 4, CPM_PIN_OUTPUT},
 40         {CPM_PORTA, 10, CPM_PIN_OUTPUT},
 41         {CPM_PORTA, 11, CPM_PIN_OUTPUT},
 42         {CPM_PORTB, 19, CPM_PIN_INPUT},
 43         {CPM_PORTB, 31, CPM_PIN_INPUT},
 44         {CPM_PORTC, 12, CPM_PIN_INPUT},
 45         {CPM_PORTC, 13, CPM_PIN_INPUT},
 46         {CPM_PORTE, 30, CPM_PIN_OUTPUT},
 47         {CPM_PORTE, 31, CPM_PIN_OUTPUT},
 48 
 49         /* MII2 */
 50         {CPM_PORTE, 14, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
 51         {CPM_PORTE, 15, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
 52         {CPM_PORTE, 16, CPM_PIN_OUTPUT},
 53         {CPM_PORTE, 17, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
 54         {CPM_PORTE, 18, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
 55         {CPM_PORTE, 19, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
 56         {CPM_PORTE, 20, CPM_PIN_OUTPUT | CPM_PIN_SECONDARY},
 57         {CPM_PORTE, 21, CPM_PIN_OUTPUT},
 58         {CPM_PORTE, 22, CPM_PIN_OUTPUT},
 59         {CPM_PORTE, 23, CPM_PIN_OUTPUT},
 60         {CPM_PORTE, 24, CPM_PIN_OUTPUT},
 61         {CPM_PORTE, 25, CPM_PIN_OUTPUT},
 62         {CPM_PORTE, 26, CPM_PIN_OUTPUT},
 63         {CPM_PORTE, 27, CPM_PIN_OUTPUT},
 64         {CPM_PORTE, 28, CPM_PIN_OUTPUT},
 65         {CPM_PORTE, 29, CPM_PIN_OUTPUT},
 66 };
 67 
 68 static void __init init_ioports(void)
 69 {
 70         int i;
 71 
 72         for (i = 0; i < ARRAY_SIZE(adder875_pins); i++) {
 73                 const struct cpm_pin *pin = &adder875_pins[i];
 74                 cpm1_set_pin(pin->port, pin->pin, pin->flags);
 75         }
 76 
 77         cpm1_clk_setup(CPM_CLK_SMC1, CPM_BRG1, CPM_CLK_RTX);
 78 
 79         /* Set FEC1 and FEC2 to MII mode */
 80         clrbits32(&mpc8xx_immr->im_cpm.cp_cptr, 0x00000180);
 81 }
 82 
 83 static void __init adder875_setup(void)
 84 {
 85         cpm_reset();
 86         init_ioports();
 87 }
 88 
 89 static int __init adder875_probe(void)
 90 {
 91         unsigned long root = of_get_flat_dt_root();
 92         return of_flat_dt_is_compatible(root, "analogue-and-micro,adder875");
 93 }
 94 
 95 static __initdata struct of_device_id of_bus_ids[] = {
 96         { .compatible = "simple-bus", },
 97         {},
 98 };
 99 
100 static int __init declare_of_platform_devices(void)
101 {
102         of_platform_bus_probe(NULL, of_bus_ids, NULL);
103         return 0;
104 }
105 machine_device_initcall(adder875, declare_of_platform_devices);
106 
107 define_machine(adder875) {
108         .name = "Adder MPC875",
109         .probe = adder875_probe,
110         .setup_arch = adder875_setup,
111         .init_IRQ = mpc8xx_pics_init,
112         .get_irq = mpc8xx_get_irq,
113         .restart = mpc8xx_restart,
114         .calibrate_decr = generic_calibrate_decr,
115         .set_rtc_time = mpc8xx_set_rtc_time,
116         .get_rtc_time = mpc8xx_get_rtc_time,
117         .progress = udbg_progress,
118 };
119 

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