1/*
2 *  ALFA Network AP96 board support
3 *
4 *  Copyright (C) 2012 Gabor Juhos <juhosg@openwrt.org>
5 *
6 *  This program is free software; you can redistribute it and/or modify it
7 *  under the terms of the GNU General Public License version 2 as published
8 *  by the Free Software Foundation.
9 */
10
11#include <linux/init.h>
12#include <linux/bitops.h>
13#include <linux/gpio.h>
14#include <linux/platform_device.h>
15#include <linux/mmc/host.h>
16#include <linux/spi/spi.h>
17#include <linux/spi/mmc_spi.h>
18
19#include <asm/mach-ath79/ath79.h>
20#include <asm/mach-ath79/ar71xx_regs.h>
21
22#include "common.h"
23#include "dev-eth.h"
24#include "dev-gpio-buttons.h"
25#include "dev-spi.h"
26#include "dev-usb.h"
27#include "machtypes.h"
28#include "pci.h"
29
30#define ALFA_AP96_GPIO_PCIE_RESET	2
31#define ALFA_AP96_GPIO_SIM_DETECT	3
32#define ALFA_AP96_GPIO_MICROSD_CD	4
33#define ALFA_AP96_GPIO_PCIE_W_DISABLE	5
34
35#define ALFA_AP96_GPIO_BUTTON_RESET	11
36
37#define ALFA_AP96_KEYS_POLL_INTERVAL		20	/* msecs */
38#define ALFA_AP96_KEYS_DEBOUNCE_INTERVAL	(3 * ALFA_AP96_KEYS_POLL_INTERVAL)
39
40static struct gpio_keys_button alfa_ap96_gpio_keys[] __initdata = {
41	{
42		.desc		= "Reset button",
43		.type		= EV_KEY,
44		.code		= KEY_RESTART,
45		.debounce_interval = ALFA_AP96_KEYS_DEBOUNCE_INTERVAL,
46		.gpio		= ALFA_AP96_GPIO_BUTTON_RESET,
47		.active_low	= 1,
48	}
49};
50
51static int alfa_ap96_mmc_get_cd(struct device *dev)
52{
53        return !gpio_get_value(ALFA_AP96_GPIO_MICROSD_CD);
54}
55
56static struct mmc_spi_platform_data alfa_ap96_mmc_data = {
57	.get_cd		= alfa_ap96_mmc_get_cd,
58	.caps		= MMC_CAP_NEEDS_POLL,
59	.ocr_mask	= MMC_VDD_32_33 | MMC_VDD_33_34,
60};
61
62static struct ath79_spi_controller_data ap96_spi0_cdata = {
63	.cs_type = ATH79_SPI_CS_TYPE_INTERNAL,
64	.cs_line = 0,
65	.is_flash = true,
66};
67
68static struct ath79_spi_controller_data ap96_spi1_cdata = {
69	.cs_type = ATH79_SPI_CS_TYPE_INTERNAL,
70	.cs_line = 1,
71};
72
73static struct ath79_spi_controller_data ap96_spi2_cdata = {
74	.cs_type = ATH79_SPI_CS_TYPE_INTERNAL,
75	.cs_line = 2,
76};
77
78static struct spi_board_info alfa_ap96_spi_info[] = {
79	{
80		.bus_num	= 0,
81		.chip_select	= 0,
82		.max_speed_hz	= 25000000,
83		.modalias	= "m25p80",
84		.controller_data = &ap96_spi0_cdata
85	}, {
86		.bus_num	= 0,
87		.chip_select	= 1,
88		.max_speed_hz	= 25000000,
89		.modalias	= "mmc_spi",
90		.platform_data	= &alfa_ap96_mmc_data,
91		.controller_data = &ap96_spi1_cdata
92	}, {
93		.bus_num	= 0,
94		.chip_select	= 2,
95		.max_speed_hz	= 6250000,
96		.modalias	= "rtc-pcf2123",
97		.controller_data = &ap96_spi2_cdata
98	},
99};
100
101static struct ath79_spi_platform_data alfa_ap96_spi_data = {
102	.bus_num		= 0,
103	.num_chipselect		= 3,
104};
105
106static void __init alfa_ap96_gpio_setup(void)
107{
108	ath79_gpio_function_enable(AR71XX_GPIO_FUNC_SPI_CS1_EN |
109				   AR71XX_GPIO_FUNC_SPI_CS2_EN);
110
111	gpio_request(ALFA_AP96_GPIO_MICROSD_CD, "microSD CD");
112	gpio_direction_input(ALFA_AP96_GPIO_MICROSD_CD);
113	gpio_request(ALFA_AP96_GPIO_PCIE_RESET, "PCIe reset");
114	gpio_direction_output(ALFA_AP96_GPIO_PCIE_RESET, 1);
115	gpio_request(ALFA_AP96_GPIO_PCIE_W_DISABLE, "PCIe write disable");
116	gpio_direction_output(ALFA_AP96_GPIO_PCIE_W_DISABLE, 1);
117}
118
119#define ALFA_AP96_WAN_PHYMASK	BIT(4)
120#define ALFA_AP96_LAN_PHYMASK	BIT(5)
121#define ALFA_AP96_MDIO_PHYMASK	(ALFA_AP96_LAN_PHYMASK | ALFA_AP96_WAN_PHYMASK)
122
123static void __init alfa_ap96_init(void)
124{
125	alfa_ap96_gpio_setup();
126
127	ath79_register_mdio(0, ~ALFA_AP96_MDIO_PHYMASK);
128
129	ath79_init_mac(ath79_eth0_data.mac_addr, ath79_mac_base, 0);
130	ath79_eth0_data.phy_if_mode = PHY_INTERFACE_MODE_RGMII;
131	ath79_eth0_data.phy_mask = ALFA_AP96_WAN_PHYMASK;
132	ath79_eth1_pll_data.pll_1000 = 0x110000;
133
134	ath79_register_eth(0);
135
136	ath79_init_mac(ath79_eth1_data.mac_addr, ath79_mac_base, 1);
137	ath79_eth1_data.phy_if_mode = PHY_INTERFACE_MODE_RGMII;
138	ath79_eth1_data.phy_mask = ALFA_AP96_LAN_PHYMASK;
139	ath79_eth1_pll_data.pll_1000 = 0x110000;
140
141	ath79_register_eth(1);
142
143	ath79_register_pci();
144	ath79_register_spi(&alfa_ap96_spi_data, alfa_ap96_spi_info,
145			   ARRAY_SIZE(alfa_ap96_spi_info));
146
147	ath79_register_gpio_keys_polled(-1, ALFA_AP96_KEYS_POLL_INTERVAL,
148					 ARRAY_SIZE(alfa_ap96_gpio_keys),
149					 alfa_ap96_gpio_keys);
150	ath79_register_usb();
151}
152
153MIPS_MACHINE(ATH79_MACH_ALFA_AP96, "ALFA-AP96", "ALFA Network AP96",
154	     alfa_ap96_init);
155