1/*
2 * KZM-ARM11-01 support
3 *  Copyright (C) 2009  Yoichi Yuasa <yuasa@linux-mips.org>
4 *
5 * based on code for MX31ADS,
6 *  Copyright (C) 2000 Deep Blue Solutions Ltd
7 *  Copyright (C) 2002 Shane Nay (shane@minirl.com)
8 *  Copyright 2005-2007 Freescale Semiconductor, Inc. All Rights Reserved.
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
18 * GNU General Public License for more details.
19 */
20
21#include <linux/gpio.h>
22#include <linux/init.h>
23#include <linux/platform_device.h>
24#include <linux/serial_8250.h>
25#include <linux/smsc911x.h>
26#include <linux/types.h>
27#include <linux/regulator/machine.h>
28#include <linux/regulator/fixed.h>
29
30#include <asm/irq.h>
31#include <asm/mach-types.h>
32#include <asm/memory.h>
33#include <asm/setup.h>
34#include <asm/mach/arch.h>
35#include <asm/mach/irq.h>
36#include <asm/mach/map.h>
37#include <asm/mach/time.h>
38
39#include "common.h"
40#include "devices-imx31.h"
41#include "hardware.h"
42#include "iomux-mx3.h"
43
44#define KZM_ARM11_IO_ADDRESS(x) (IOMEM(					\
45	IMX_IO_P2V_MODULE(x, MX31_CS4) ?:				\
46	IMX_IO_P2V_MODULE(x, MX31_CS5)) ?:				\
47	MX31_IO_ADDRESS(x))
48
49/*
50 *  KZM-ARM11-01 Board Control Registers on FPGA
51 */
52#define KZM_ARM11_CTL1		(MX31_CS4_BASE_ADDR + 0x1000)
53#define KZM_ARM11_CTL2		(MX31_CS4_BASE_ADDR + 0x1001)
54#define KZM_ARM11_RSW1		(MX31_CS4_BASE_ADDR + 0x1002)
55#define KZM_ARM11_BACK_LIGHT	(MX31_CS4_BASE_ADDR + 0x1004)
56#define KZM_ARM11_FPGA_REV	(MX31_CS4_BASE_ADDR + 0x1008)
57#define KZM_ARM11_7SEG_LED	(MX31_CS4_BASE_ADDR + 0x1010)
58#define KZM_ARM11_LEDS		(MX31_CS4_BASE_ADDR + 0x1020)
59#define KZM_ARM11_DIPSW2	(MX31_CS4_BASE_ADDR + 0x1003)
60
61/*
62 * External UART for touch panel on FPGA
63 */
64#define KZM_ARM11_16550		(MX31_CS4_BASE_ADDR + 0x1050)
65
66#if defined(CONFIG_SERIAL_8250) || defined(CONFIG_SERIAL_8250_MODULE)
67/*
68 * KZM-ARM11-01 has an external UART on FPGA
69 */
70static struct plat_serial8250_port serial_platform_data[] = {
71	{
72		.membase	= KZM_ARM11_IO_ADDRESS(KZM_ARM11_16550),
73		.mapbase	= KZM_ARM11_16550,
74		/* irq number is run-time assigned */
75		.irqflags	= IRQ_TYPE_EDGE_RISING,
76		.uartclk	= 14745600,
77		.regshift	= 0,
78		.iotype		= UPIO_MEM,
79		.flags		= UPF_BOOT_AUTOCONF | UPF_SKIP_TEST |
80				  UPF_BUGGY_UART,
81	},
82	{},
83};
84
85static struct resource serial8250_resources[] = {
86	{
87		.start	= KZM_ARM11_16550,
88		.end	= KZM_ARM11_16550 + 0x10,
89		.flags	= IORESOURCE_MEM,
90	},
91	{
92		/* irq number is run-time assigned */
93		.flags	= IORESOURCE_IRQ,
94	},
95};
96
97static struct platform_device serial_device = {
98	.name		= "serial8250",
99	.id		= PLAT8250_DEV_PLATFORM,
100	.dev		= {
101				.platform_data = serial_platform_data,
102			  },
103	.num_resources	= ARRAY_SIZE(serial8250_resources),
104	.resource	= serial8250_resources,
105};
106
107static int __init kzm_init_ext_uart(void)
108{
109	u8 tmp;
110
111	/*
112	 * GPIO 1-1: external UART interrupt line
113	 */
114	mxc_iomux_mode(IOMUX_MODE(MX31_PIN_GPIO1_1, IOMUX_CONFIG_GPIO));
115	gpio_request(IOMUX_TO_GPIO(MX31_PIN_GPIO1_1), "ext-uart-int");
116	gpio_direction_input(IOMUX_TO_GPIO(MX31_PIN_GPIO1_1));
117
118	/*
119	 * Unmask UART interrupt
120	 */
121	tmp = __raw_readb(KZM_ARM11_IO_ADDRESS(KZM_ARM11_CTL1));
122	tmp |= 0x2;
123	__raw_writeb(tmp, KZM_ARM11_IO_ADDRESS(KZM_ARM11_CTL1));
124
125	serial_platform_data[0].irq =
126			gpio_to_irq(IOMUX_TO_GPIO(MX31_PIN_GPIO1_1));
127	serial8250_resources[1].start =
128			gpio_to_irq(IOMUX_TO_GPIO(MX31_PIN_GPIO1_1));
129	serial8250_resources[1].end =
130			gpio_to_irq(IOMUX_TO_GPIO(MX31_PIN_GPIO1_1));
131
132	return platform_device_register(&serial_device);
133}
134#else
135static inline int kzm_init_ext_uart(void)
136{
137	return 0;
138}
139#endif
140
141/*
142 * SMSC LAN9118
143 */
144#if defined(CONFIG_SMSC911X) || defined(CONFIG_SMSC911X_MODULE)
145static struct smsc911x_platform_config kzm_smsc9118_config = {
146	.phy_interface	= PHY_INTERFACE_MODE_MII,
147	.irq_polarity	= SMSC911X_IRQ_POLARITY_ACTIVE_HIGH,
148	.irq_type	= SMSC911X_IRQ_TYPE_PUSH_PULL,
149	.flags		= SMSC911X_USE_32BIT | SMSC911X_SAVE_MAC_ADDRESS,
150};
151
152static struct resource kzm_smsc9118_resources[] = {
153	{
154		.start	= MX31_CS5_BASE_ADDR,
155		.end	= MX31_CS5_BASE_ADDR + SZ_128K - 1,
156		.flags	= IORESOURCE_MEM,
157	},
158	{
159		/* irq number is run-time assigned */
160		.flags	= IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
161	},
162};
163
164static struct platform_device kzm_smsc9118_device = {
165	.name		= "smsc911x",
166	.id		= -1,
167	.num_resources	= ARRAY_SIZE(kzm_smsc9118_resources),
168	.resource	= kzm_smsc9118_resources,
169	.dev		= {
170				.platform_data = &kzm_smsc9118_config,
171			  },
172};
173
174static struct regulator_consumer_supply dummy_supplies[] = {
175	REGULATOR_SUPPLY("vdd33a", "smsc911x"),
176	REGULATOR_SUPPLY("vddvario", "smsc911x"),
177};
178
179static int __init kzm_init_smsc9118(void)
180{
181	/*
182	 * GPIO 1-2: SMSC9118 interrupt line
183	 */
184	mxc_iomux_mode(IOMUX_MODE(MX31_PIN_GPIO1_2, IOMUX_CONFIG_GPIO));
185	gpio_request(IOMUX_TO_GPIO(MX31_PIN_GPIO1_2), "smsc9118-int");
186	gpio_direction_input(IOMUX_TO_GPIO(MX31_PIN_GPIO1_2));
187
188	regulator_register_fixed(0, dummy_supplies, ARRAY_SIZE(dummy_supplies));
189
190	kzm_smsc9118_resources[1].start =
191			gpio_to_irq(IOMUX_TO_GPIO(MX31_PIN_GPIO1_2));
192	kzm_smsc9118_resources[1].end =
193			gpio_to_irq(IOMUX_TO_GPIO(MX31_PIN_GPIO1_2));
194
195	return platform_device_register(&kzm_smsc9118_device);
196}
197#else
198static inline int kzm_init_smsc9118(void)
199{
200	return 0;
201}
202#endif
203
204#if defined(CONFIG_SERIAL_IMX) || defined(CONFIG_SERIAL_IMX_MODULE)
205static const struct imxuart_platform_data uart_pdata __initconst = {
206	.flags = IMXUART_HAVE_RTSCTS,
207};
208
209static void __init kzm_init_imx_uart(void)
210{
211	imx31_add_imx_uart0(&uart_pdata);
212	imx31_add_imx_uart1(&uart_pdata);
213}
214#else
215static inline void kzm_init_imx_uart(void)
216{
217}
218#endif
219
220static int kzm_pins[] __initdata = {
221	MX31_PIN_CTS1__CTS1,
222	MX31_PIN_RTS1__RTS1,
223	MX31_PIN_TXD1__TXD1,
224	MX31_PIN_RXD1__RXD1,
225	MX31_PIN_DCD_DCE1__DCD_DCE1,
226	MX31_PIN_RI_DCE1__RI_DCE1,
227	MX31_PIN_DSR_DCE1__DSR_DCE1,
228	MX31_PIN_DTR_DCE1__DTR_DCE1,
229	MX31_PIN_CTS2__CTS2,
230	MX31_PIN_RTS2__RTS2,
231	MX31_PIN_TXD2__TXD2,
232	MX31_PIN_RXD2__RXD2,
233	MX31_PIN_DCD_DTE1__DCD_DTE2,
234	MX31_PIN_RI_DTE1__RI_DTE2,
235	MX31_PIN_DSR_DTE1__DSR_DTE2,
236	MX31_PIN_DTR_DTE1__DTR_DTE2,
237};
238
239/*
240 * Board specific initialization.
241 */
242static void __init kzm_board_init(void)
243{
244	imx31_soc_init();
245
246	mxc_iomux_setup_multiple_pins(kzm_pins,
247				      ARRAY_SIZE(kzm_pins), "kzm");
248	kzm_init_ext_uart();
249	kzm_init_smsc9118();
250	kzm_init_imx_uart();
251
252	pr_info("Clock input source is 26MHz\n");
253}
254
255/*
256 * This structure defines static mappings for the kzm-arm11-01 board.
257 */
258static struct map_desc kzm_io_desc[] __initdata = {
259	{
260		.virtual	= (unsigned long)MX31_CS4_BASE_ADDR_VIRT,
261		.pfn		= __phys_to_pfn(MX31_CS4_BASE_ADDR),
262		.length		= MX31_CS4_SIZE,
263		.type		= MT_DEVICE
264	},
265	{
266		.virtual	= (unsigned long)MX31_CS5_BASE_ADDR_VIRT,
267		.pfn		= __phys_to_pfn(MX31_CS5_BASE_ADDR),
268		.length		= MX31_CS5_SIZE,
269		.type		= MT_DEVICE
270	},
271};
272
273/*
274 * Set up static virtual mappings.
275 */
276static void __init kzm_map_io(void)
277{
278	mx31_map_io();
279	iotable_init(kzm_io_desc, ARRAY_SIZE(kzm_io_desc));
280}
281
282static void __init kzm_timer_init(void)
283{
284	mx31_clocks_init(26000000);
285}
286
287MACHINE_START(KZM_ARM11_01, "Kyoto Microcomputer Co., Ltd. KZM-ARM11-01")
288	.atag_offset = 0x100,
289	.map_io = kzm_map_io,
290	.init_early = imx31_init_early,
291	.init_irq = mx31_init_irq,
292	.init_time	= kzm_timer_init,
293	.init_machine = kzm_board_init,
294	.restart	= mxc_restart,
295MACHINE_END
296