1 /* 2 * ALPHAPROJECT AP-SH4AD-0A Support. 3 * 4 * Copyright (C) 2010 ALPHAPROJECT Co.,Ltd. 5 * Copyright (C) 2010 Matt Fleming 6 * Copyright (C) 2010 Paul Mundt 7 * 8 * This file is subject to the terms and conditions of the GNU General Public 9 * License. See the file "COPYING" in the main directory of this archive 10 * for more details. 11 */ 12 #include <linux/init.h> 13 #include <linux/platform_device.h> 14 #include <linux/io.h> 15 #include <linux/regulator/fixed.h> 16 #include <linux/regulator/machine.h> 17 #include <linux/smsc911x.h> 18 #include <linux/irq.h> 19 #include <linux/clk.h> 20 #include <asm/machvec.h> 21 #include <asm/sizes.h> 22 23 /* Dummy supplies, where voltage doesn't matter */ 24 static struct regulator_consumer_supply dummy_supplies[] = { 25 REGULATOR_SUPPLY("vddvario", "smsc911x"), 26 REGULATOR_SUPPLY("vdd33a", "smsc911x"), 27 }; 28 29 static struct resource smsc911x_resources[] = { 30 [0] = { 31 .name = "smsc911x-memory", 32 .start = 0xA4000000, 33 .end = 0xA4000000 + SZ_256 - 1, 34 .flags = IORESOURCE_MEM, 35 }, 36 [1] = { 37 .name = "smsc911x-irq", 38 .start = evt2irq(0x200), 39 .end = evt2irq(0x200), 40 .flags = IORESOURCE_IRQ, 41 }, 42 }; 43 44 static struct smsc911x_platform_config smsc911x_config = { 45 .irq_polarity = SMSC911X_IRQ_POLARITY_ACTIVE_LOW, 46 .irq_type = SMSC911X_IRQ_TYPE_OPEN_DRAIN, 47 .flags = SMSC911X_USE_16BIT, 48 .phy_interface = PHY_INTERFACE_MODE_MII, 49 }; 50 51 static struct platform_device smsc911x_device = { 52 .name = "smsc911x", 53 .id = -1, 54 .num_resources = ARRAY_SIZE(smsc911x_resources), 55 .resource = smsc911x_resources, 56 .dev = { 57 .platform_data = &smsc911x_config, 58 }, 59 }; 60 61 static struct platform_device *apsh4ad0a_devices[] __initdata = { 62 &smsc911x_device, 63 }; 64 65 static int __init apsh4ad0a_devices_setup(void) 66 { 67 regulator_register_fixed(0, dummy_supplies, ARRAY_SIZE(dummy_supplies)); 68 69 return platform_add_devices(apsh4ad0a_devices, 70 ARRAY_SIZE(apsh4ad0a_devices)); 71 } 72 device_initcall(apsh4ad0a_devices_setup); 73 74 static int apsh4ad0a_mode_pins(void) 75 { 76 int value = 0; 77 78 /* These are the factory default settings of SW1 and SW2. 79 * If you change these dip switches then you will need to 80 * adjust the values below as well. 81 */ 82 value |= MODE_PIN0; /* Clock Mode 3 */ 83 value |= MODE_PIN1; 84 value &= ~MODE_PIN2; 85 value &= ~MODE_PIN3; 86 value &= ~MODE_PIN4; /* 16-bit Area0 bus width */ 87 value |= MODE_PIN5; 88 value |= MODE_PIN6; 89 value |= MODE_PIN7; /* Normal mode */ 90 value |= MODE_PIN8; /* Little Endian */ 91 value |= MODE_PIN9; /* Crystal resonator */ 92 value &= ~MODE_PIN10; /* 29-bit address mode */ 93 value &= ~MODE_PIN11; /* PCI-E Root port */ 94 value &= ~MODE_PIN12; /* 4 lane + 1 lane */ 95 value |= MODE_PIN13; /* AUD Enable */ 96 value &= ~MODE_PIN14; /* Normal Operation */ 97 98 return value; 99 } 100 101 static int apsh4ad0a_clk_init(void) 102 { 103 struct clk *clk; 104 int ret; 105 106 clk = clk_get(NULL, "extal"); 107 if (IS_ERR(clk)) 108 return PTR_ERR(clk); 109 ret = clk_set_rate(clk, 33333000); 110 clk_put(clk); 111 112 return ret; 113 } 114 115 /* Initialize the board */ 116 static void __init apsh4ad0a_setup(char **cmdline_p) 117 { 118 pr_info("Alpha Project AP-SH4AD-0A support:\n"); 119 } 120 121 static void __init apsh4ad0a_init_irq(void) 122 { 123 plat_irq_setup_pins(IRQ_MODE_IRQ3210); 124 } 125 126 /* 127 * The Machine Vector 128 */ 129 static struct sh_machine_vector mv_apsh4ad0a __initmv = { 130 .mv_name = "AP-SH4AD-0A", 131 .mv_setup = apsh4ad0a_setup, 132 .mv_mode_pins = apsh4ad0a_mode_pins, 133 .mv_clk_init = apsh4ad0a_clk_init, 134 .mv_init_irq = apsh4ad0a_init_irq, 135 }; 136