1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * ALPHAPROJECT AP-SH4AD-0A Support. 4 * 5 * Copyright (C) 2010 ALPHAPROJECT Co.,Ltd. 6 * Copyright (C) 2010 Matt Fleming 7 * Copyright (C) 2010 Paul Mundt 8 */ 9 #include <linux/init.h> 10 #include <linux/platform_device.h> 11 #include <linux/io.h> 12 #include <linux/regulator/fixed.h> 13 #include <linux/regulator/machine.h> 14 #include <linux/smsc911x.h> 15 #include <linux/irq.h> 16 #include <linux/clk.h> 17 #include <asm/machvec.h> 18 #include <linux/sizes.h> 19 20 /* Dummy supplies, where voltage doesn't matter */ 21 static struct regulator_consumer_supply dummy_supplies[] = { 22 REGULATOR_SUPPLY("vddvario", "smsc911x"), 23 REGULATOR_SUPPLY("vdd33a", "smsc911x"), 24 }; 25 26 static struct resource smsc911x_resources[] = { 27 [0] = { 28 .name = "smsc911x-memory", 29 .start = 0xA4000000, 30 .end = 0xA4000000 + SZ_256 - 1, 31 .flags = IORESOURCE_MEM, 32 }, 33 [1] = { 34 .name = "smsc911x-irq", 35 .start = evt2irq(0x200), 36 .end = evt2irq(0x200), 37 .flags = IORESOURCE_IRQ, 38 }, 39 }; 40 41 static struct smsc911x_platform_config smsc911x_config = { 42 .irq_polarity = SMSC911X_IRQ_POLARITY_ACTIVE_LOW, 43 .irq_type = SMSC911X_IRQ_TYPE_OPEN_DRAIN, 44 .flags = SMSC911X_USE_16BIT, 45 .phy_interface = PHY_INTERFACE_MODE_MII, 46 }; 47 48 static struct platform_device smsc911x_device = { 49 .name = "smsc911x", 50 .id = -1, 51 .num_resources = ARRAY_SIZE(smsc911x_resources), 52 .resource = smsc911x_resources, 53 .dev = { 54 .platform_data = &smsc911x_config, 55 }, 56 }; 57 58 static struct platform_device *apsh4ad0a_devices[] __initdata = { 59 &smsc911x_device, 60 }; 61 62 static int __init apsh4ad0a_devices_setup(void) 63 { 64 regulator_register_fixed(0, dummy_supplies, ARRAY_SIZE(dummy_supplies)); 65 66 return platform_add_devices(apsh4ad0a_devices, 67 ARRAY_SIZE(apsh4ad0a_devices)); 68 } 69 device_initcall(apsh4ad0a_devices_setup); 70 71 static int apsh4ad0a_mode_pins(void) 72 { 73 int value = 0; 74 75 /* These are the factory default settings of SW1 and SW2. 76 * If you change these dip switches then you will need to 77 * adjust the values below as well. 78 */ 79 value |= MODE_PIN0; /* Clock Mode 3 */ 80 value |= MODE_PIN1; 81 value &= ~MODE_PIN2; 82 value &= ~MODE_PIN3; 83 value &= ~MODE_PIN4; /* 16-bit Area0 bus width */ 84 value |= MODE_PIN5; 85 value |= MODE_PIN6; 86 value |= MODE_PIN7; /* Normal mode */ 87 value |= MODE_PIN8; /* Little Endian */ 88 value |= MODE_PIN9; /* Crystal resonator */ 89 value &= ~MODE_PIN10; /* 29-bit address mode */ 90 value &= ~MODE_PIN11; /* PCI-E Root port */ 91 value &= ~MODE_PIN12; /* 4 lane + 1 lane */ 92 value |= MODE_PIN13; /* AUD Enable */ 93 value &= ~MODE_PIN14; /* Normal Operation */ 94 95 return value; 96 } 97 98 static int apsh4ad0a_clk_init(void) 99 { 100 struct clk *clk; 101 int ret; 102 103 clk = clk_get(NULL, "extal"); 104 if (IS_ERR(clk)) 105 return PTR_ERR(clk); 106 ret = clk_set_rate(clk, 33333000); 107 clk_put(clk); 108 109 return ret; 110 } 111 112 /* Initialize the board */ 113 static void __init apsh4ad0a_setup(char **cmdline_p) 114 { 115 pr_info("Alpha Project AP-SH4AD-0A support:\n"); 116 } 117 118 static void __init apsh4ad0a_init_irq(void) 119 { 120 plat_irq_setup_pins(IRQ_MODE_IRQ3210); 121 } 122 123 /* 124 * The Machine Vector 125 */ 126 static struct sh_machine_vector mv_apsh4ad0a __initmv = { 127 .mv_name = "AP-SH4AD-0A", 128 .mv_setup = apsh4ad0a_setup, 129 .mv_mode_pins = apsh4ad0a_mode_pins, 130 .mv_clk_init = apsh4ad0a_clk_init, 131 .mv_init_irq = apsh4ad0a_init_irq, 132 }; 133