1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
|
/*
* Renesas Technology Europe SDK7786 Support.
*
* Copyright (C) 2010 Matt Fleming
* Copyright (C) 2010 Paul Mundt
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*/
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/io.h>
#include <linux/smsc911x.h>
#include <linux/i2c.h>
#include <linux/irq.h>
#include <asm/machvec.h>
#include <asm/heartbeat.h>
#include <asm/sizes.h>
static struct resource heartbeat_resource = {
.start = 0x07fff8b0,
.end = 0x07fff8b0 + sizeof(u16) - 1,
.flags = IORESOURCE_MEM | IORESOURCE_MEM_16BIT,
};
static struct platform_device heartbeat_device = {
.name = "heartbeat",
.id = -1,
.num_resources = 1,
.resource = &heartbeat_resource,
};
static struct resource smsc911x_resources[] = {
[0] = {
.name = "smsc911x-memory",
.start = 0x07ffff00,
.end = 0x07ffff00 + SZ_256 - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.name = "smsc911x-irq",
.start = evt2irq(0x2c0),
.end = evt2irq(0x2c0),
.flags = IORESOURCE_IRQ,
},
};
static struct smsc911x_platform_config smsc911x_config = {
.irq_polarity = SMSC911X_IRQ_POLARITY_ACTIVE_LOW,
.irq_type = SMSC911X_IRQ_TYPE_OPEN_DRAIN,
.flags = SMSC911X_USE_32BIT,
.phy_interface = PHY_INTERFACE_MODE_MII,
};
static struct platform_device smsc911x_device = {
.name = "smsc911x",
.id = -1,
.num_resources = ARRAY_SIZE(smsc911x_resources),
.resource = smsc911x_resources,
.dev = {
.platform_data = &smsc911x_config,
},
};
static struct resource smbus_fpga_resource = {
.start = 0x07fff9e0,
.end = 0x07fff9e0 + SZ_32 - 1,
.flags = IORESOURCE_MEM,
};
static struct platform_device smbus_fpga_device = {
.name = "i2c-sdk7786",
.id = 0,
.num_resources = 1,
.resource = &smbus_fpga_resource,
};
static struct resource smbus_pcie_resource = {
.start = 0x07fffc30,
.end = 0x07fffc30 + SZ_32 - 1,
.flags = IORESOURCE_MEM,
};
static struct platform_device smbus_pcie_device = {
.name = "i2c-sdk7786",
.id = 1,
.num_resources = 1,
.resource = &smbus_pcie_resource,
};
static struct i2c_board_info __initdata sdk7786_i2c_devices[] = {
{
I2C_BOARD_INFO("max6900", 0x68),
},
};
static struct platform_device *sh7786_devices[] __initdata = {
&heartbeat_device,
&smsc911x_device,
&smbus_fpga_device,
&smbus_pcie_device,
};
#define SBCR_REGS_BASE 0x07fff990
#define SCBR_I2CMEN (1 << 0) /* FPGA I2C master enable */
#define SCBR_I2CCEN (1 << 1) /* CPU I2C master enable */
static int sdk7786_i2c_setup(void)
{
void __iomem *sbcr;
unsigned int tmp;
sbcr = ioremap_nocache(SBCR_REGS_BASE, SZ_16);
/*
* Hand over I2C control to the FPGA.
*/
tmp = ioread16(sbcr);
tmp &= ~SCBR_I2CCEN;
tmp |= SCBR_I2CMEN;
iowrite16(tmp, sbcr);
iounmap(sbcr);
return i2c_register_board_info(0, sdk7786_i2c_devices,
ARRAY_SIZE(sdk7786_i2c_devices));
}
static int __init sdk7786_devices_setup(void)
{
int ret;
ret = platform_add_devices(sh7786_devices, ARRAY_SIZE(sh7786_devices));
if (unlikely(ret != 0))
return ret;
return sdk7786_i2c_setup();
}
__initcall(sdk7786_devices_setup);
#define FPGA_REGS_BASE 0x07fff800
#define FPGA_REGS_SIZE 1152
#define INTASR 0x010
#define INTAMR 0x020
#define INTBSR 0x090
#define INTBMR 0x0a0
#define INTMSR 0x130
#define IASELR1 0x210
#define IASELR2 0x220
#define IASELR3 0x230
#define IASELR4 0x240
#define IASELR5 0x250
#define IASELR6 0x260
#define IASELR7 0x270
#define IASELR8 0x280
#define IASELR9 0x290
#define IASELR10 0x2a0
#define IASELR11 0x2b0
#define IASELR12 0x2c0
#define IASELR13 0x2d0
#define IASELR14 0x2e0
#define IASELR15 0x2f0
static void __iomem *fpga_regs;
static u16 fpga_read_reg(unsigned int reg)
{
return __raw_readw(fpga_regs + reg);
}
static void fpga_write_reg(u16 val, unsigned int reg)
{
__raw_writew(val, fpga_regs + reg);
}
enum {
ATA_IRQ_BIT = 1,
SPI_BUSY_BIT = 2,
LIRQ5_BIT = 3,
LIRQ6_BIT = 4,
LIRQ7_BIT = 5,
LIRQ8_BIT = 6,
KEY_IRQ_BIT = 7,
PEN_IRQ_BIT = 8,
ETH_IRQ_BIT = 9,
RTC_ALARM_BIT = 10,
CRYSTAL_FAIL_BIT = 12,
ETH_PME_BIT = 14,
};
static void __init init_sdk7786_IRQ(void)
{
unsigned int tmp;
fpga_regs = ioremap_nocache(FPGA_REGS_BASE, FPGA_REGS_SIZE);
if (!fpga_regs) {
printk(KERN_ERR "Couldn't map FPGA registers\n");
return;
}
/* Enable priority encoding for all IRLs */
fpga_write_reg(fpga_read_reg(INTMSR) | 0x0303, INTMSR);
/* Clear FPGA interrupt status registers */
fpga_write_reg(0x0000, INTASR);
fpga_write_reg(0x0000, INTBSR);
/* Unmask FPGA interrupts */
tmp = fpga_read_reg(INTAMR);
tmp &= ~(1 << ETH_IRQ_BIT);
fpga_write_reg(tmp, INTAMR);
plat_irq_setup_pins(IRQ_MODE_IRL7654_MASK);
plat_irq_setup_pins(IRQ_MODE_IRL3210_MASK);
}
#define MODSWR_REGS 0x07fff830
static int sdk7786_mode_pins(void)
{
void __iomem *modswr;
int pin_states;
modswr = ioremap_nocache(MODSWR_REGS, SZ_16);
if (!modswr)
return -ENXIO;
pin_states = ioread16(modswr);
iounmap(modswr);
return pin_states;
}
/* Initialize the board */
static void __init sdk7786_setup(char **cmdline_p)
{
printk(KERN_INFO "Renesas Technology Corp. SDK7786 support.\n");
}
/*
* The Machine Vector
*/
static struct sh_machine_vector mv_sdk7786 __initmv = {
.mv_name = "SDK7786",
.mv_setup = sdk7786_setup,
.mv_mode_pins = sdk7786_mode_pins,
.mv_init_irq = init_sdk7786_IRQ,
};
|
