1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * Renesas Technology Sales RTS7751R2D Support.
4 *
5 * Copyright (C) 2002 - 2006 Atom Create Engineering Co., Ltd.
6 * Copyright (C) 2004 - 2007 Paul Mundt
7 */
8 #include <linux/init.h>
9 #include <linux/platform_device.h>
10 #include <linux/mtd/mtd.h>
11 #include <linux/mtd/partitions.h>
12 #include <linux/mtd/physmap.h>
13 #include <linux/ata_platform.h>
14 #include <linux/sm501.h>
15 #include <linux/sm501-regs.h>
16 #include <linux/pm.h>
17 #include <linux/fb.h>
18 #include <linux/spi/spi.h>
19 #include <linux/spi/spi_bitbang.h>
20 #include <asm/machvec.h>
21 #include <mach/r2d.h>
22 #include <asm/io.h>
23 #include <asm/io_trapped.h>
24 #include <asm/spi.h>
25
26 static struct resource cf_ide_resources[] = {
27 [0] = {
28 .start = PA_AREA5_IO + 0x1000,
29 .end = PA_AREA5_IO + 0x1000 + 0x10 - 0x2,
30 .flags = IORESOURCE_MEM,
31 },
32 [1] = {
33 .start = PA_AREA5_IO + 0x80c,
34 .end = PA_AREA5_IO + 0x80c,
35 .flags = IORESOURCE_MEM,
36 },
37 #ifndef CONFIG_RTS7751R2D_1 /* For R2D-1 polling is preferred */
38 [2] = {
39 .start = IRQ_CF_IDE,
40 .flags = IORESOURCE_IRQ,
41 },
42 #endif
43 };
44
45 static struct pata_platform_info pata_info = {
46 .ioport_shift = 1,
47 };
48
49 static struct platform_device cf_ide_device = {
50 .name = "pata_platform",
51 .id = -1,
52 .num_resources = ARRAY_SIZE(cf_ide_resources),
53 .resource = cf_ide_resources,
54 .dev = {
55 .platform_data = &pata_info,
56 },
57 };
58
59 static struct spi_board_info spi_bus[] = {
60 {
61 .modalias = "rtc-r9701",
62 .max_speed_hz = 1000000,
63 .mode = SPI_MODE_3,
64 },
65 };
66
67 static void r2d_chip_select(struct sh_spi_info *spi, int cs, int state)
68 {
69 BUG_ON(cs != 0); /* Single Epson RTC-9701JE attached on CS0 */
70 __raw_writew(state == BITBANG_CS_ACTIVE, PA_RTCCE);
71 }
72
73 static struct sh_spi_info spi_info = {
74 .num_chipselect = 1,
75 .chip_select = r2d_chip_select,
76 };
77
78 static struct resource spi_sh_sci_resources[] = {
79 {
80 .start = 0xffe00000,
81 .end = 0xffe0001f,
82 .flags = IORESOURCE_MEM,
83 },
84 };
85
86 static struct platform_device spi_sh_sci_device = {
87 .name = "spi_sh_sci",
88 .id = -1,
89 .num_resources = ARRAY_SIZE(spi_sh_sci_resources),
90 .resource = spi_sh_sci_resources,
91 .dev = {
92 .platform_data = &spi_info,
93 },
94 };
95
96 static struct resource heartbeat_resources[] = {
97 [0] = {
98 .start = PA_OUTPORT,
99 .end = PA_OUTPORT,
100 .flags = IORESOURCE_MEM,
101 },
102 };
103
104 static struct platform_device heartbeat_device = {
105 .name = "heartbeat",
106 .id = -1,
107 .num_resources = ARRAY_SIZE(heartbeat_resources),
108 .resource = heartbeat_resources,
109 };
110
111 static struct resource sm501_resources[] = {
112 [0] = {
113 .start = 0x10000000,
114 .end = 0x13e00000 - 1,
115 .flags = IORESOURCE_MEM,
116 },
117 [1] = {
118 .start = 0x13e00000,
119 .end = 0x13ffffff,
120 .flags = IORESOURCE_MEM,
121 },
122 [2] = {
123 .start = IRQ_VOYAGER,
124 .flags = IORESOURCE_IRQ,
125 },
126 };
127
128 static struct fb_videomode sm501_default_mode = {
129 .pixclock = 35714,
130 .xres = 640,
131 .yres = 480,
132 .left_margin = 105,
133 .right_margin = 50,
134 .upper_margin = 35,
135 .lower_margin = 0,
136 .hsync_len = 96,
137 .vsync_len = 2,
138 .sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
139 };
140
141 static struct sm501_platdata_fbsub sm501_pdata_fbsub_pnl = {
142 .def_bpp = 16,
143 .def_mode = &sm501_default_mode,
144 .flags = SM501FB_FLAG_USE_INIT_MODE |
145 SM501FB_FLAG_USE_HWCURSOR |
146 SM501FB_FLAG_USE_HWACCEL |
147 SM501FB_FLAG_DISABLE_AT_EXIT,
148 };
149
150 static struct sm501_platdata_fbsub sm501_pdata_fbsub_crt = {
151 .flags = (SM501FB_FLAG_USE_INIT_MODE |
152 SM501FB_FLAG_USE_HWCURSOR |
153 SM501FB_FLAG_USE_HWACCEL |
154 SM501FB_FLAG_DISABLE_AT_EXIT),
155
156 };
157
158 static struct sm501_platdata_fb sm501_fb_pdata = {
159 .fb_route = SM501_FB_OWN,
160 .fb_crt = &sm501_pdata_fbsub_crt,
161 .fb_pnl = &sm501_pdata_fbsub_pnl,
162 .flags = SM501_FBPD_SWAP_FB_ENDIAN,
163 };
164
165 static struct sm501_initdata sm501_initdata = {
166 .devices = SM501_USE_USB_HOST | SM501_USE_UART0,
167 };
168
169 static struct sm501_platdata sm501_platform_data = {
170 .init = &sm501_initdata,
171 .fb = &sm501_fb_pdata,
172 };
173
174 static struct platform_device sm501_device = {
175 .name = "sm501",
176 .id = -1,
177 .dev = {
178 .platform_data = &sm501_platform_data,
179 },
180 .num_resources = ARRAY_SIZE(sm501_resources),
181 .resource = sm501_resources,
182 };
183
184 static struct mtd_partition r2d_partitions[] = {
185 {
186 .name = "U-Boot",
187 .offset = 0x00000000,
188 .size = 0x00040000,
189 .mask_flags = MTD_WRITEABLE,
190 }, {
191 .name = "Environment",
192 .offset = MTDPART_OFS_NXTBLK,
193 .size = 0x00040000,
194 .mask_flags = MTD_WRITEABLE,
195 }, {
196 .name = "Kernel",
197 .offset = MTDPART_OFS_NXTBLK,
198 .size = 0x001c0000,
199 }, {
200 .name = "Flash_FS",
201 .offset = MTDPART_OFS_NXTBLK,
202 .size = MTDPART_SIZ_FULL,
203 }
204 };
205
206 static struct physmap_flash_data flash_data = {
207 .width = 2,
208 .nr_parts = ARRAY_SIZE(r2d_partitions),
209 .parts = r2d_partitions,
210 };
211
212 static struct resource flash_resource = {
213 .start = 0x00000000,
214 .end = 0x02000000,
215 .flags = IORESOURCE_MEM,
216 };
217
218 static struct platform_device flash_device = {
219 .name = "physmap-flash",
220 .id = -1,
221 .resource = &flash_resource,
222 .num_resources = 1,
223 .dev = {
224 .platform_data = &flash_data,
225 },
226 };
227
228 static struct platform_device *rts7751r2d_devices[] __initdata = {
229 &sm501_device,
230 &heartbeat_device,
231 &spi_sh_sci_device,
232 };
233
234 /*
235 * The CF is connected with a 16-bit bus where 8-bit operations are
236 * unsupported. The linux ata driver is however using 8-bit operations, so
237 * insert a trapped io filter to convert 8-bit operations into 16-bit.
238 */
239 static struct trapped_io cf_trapped_io = {
240 .resource = cf_ide_resources,
241 .num_resources = 2,
242 .minimum_bus_width = 16,
243 };
244
245 static int __init rts7751r2d_devices_setup(void)
246 {
247 if (register_trapped_io(&cf_trapped_io) == 0)
248 platform_device_register(&cf_ide_device);
249
250 if (mach_is_r2d_plus())
251 platform_device_register(&flash_device);
252
253 spi_register_board_info(spi_bus, ARRAY_SIZE(spi_bus));
254
255 return platform_add_devices(rts7751r2d_devices,
256 ARRAY_SIZE(rts7751r2d_devices));
257 }
258 device_initcall(rts7751r2d_devices_setup);
259
260 static void rts7751r2d_power_off(void)
261 {
262 __raw_writew(0x0001, PA_POWOFF);
263 }
264
265 /*
266 * Initialize the board
267 */
268 static void __init rts7751r2d_setup(char **cmdline_p)
269 {
270 void __iomem *sm501_reg;
271 u16 ver = __raw_readw(PA_VERREG);
272
273 printk(KERN_INFO "Renesas Technology Sales RTS7751R2D support.\n");
274
275 printk(KERN_INFO "FPGA version:%d (revision:%d)\n",
276 (ver >> 4) & 0xf, ver & 0xf);
277
278 __raw_writew(0x0000, PA_OUTPORT);
279 pm_power_off = rts7751r2d_power_off;
280
281 /* sm501 dram configuration:
282 * ColSizeX = 11 - External Memory Column Size: 256 words.
283 * APX = 1 - External Memory Active to Pre-Charge Delay: 7 clocks.
284 * RstX = 1 - External Memory Reset: Normal.
285 * Rfsh = 1 - Local Memory Refresh to Command Delay: 12 clocks.
286 * BwC = 1 - Local Memory Block Write Cycle Time: 2 clocks.
287 * BwP = 1 - Local Memory Block Write to Pre-Charge Delay: 1 clock.
288 * AP = 1 - Internal Memory Active to Pre-Charge Delay: 7 clocks.
289 * Rst = 1 - Internal Memory Reset: Normal.
290 * RA = 1 - Internal Memory Remain in Active State: Do not remain.
291 */
292
293 sm501_reg = (void __iomem *)0xb3e00000 + SM501_DRAM_CONTROL;
294 writel(readl(sm501_reg) | 0x00f107c0, sm501_reg);
295 }
296
297 /*
298 * The Machine Vector
299 */
300 static struct sh_machine_vector mv_rts7751r2d __initmv = {
301 .mv_name = "RTS7751R2D",
302 .mv_setup = rts7751r2d_setup,
303 .mv_init_irq = init_rts7751r2d_IRQ,
304 .mv_irq_demux = rts7751r2d_irq_demux,
305 };
306
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