1 // SPDX-License-Identifier: GPL-2.0
2 /*
3  * arch/sh/boards/renesas/r7780rp/setup.c
4  *
5  * Renesas Solutions Highlander Support.
6  *
7  * Copyright (C) 2002 Atom Create Engineering Co., Ltd.
8  * Copyright (C) 2005 - 2008 Paul Mundt
9  *
10  * This contains support for the R7780RP-1, R7780MP, and R7785RP
11  * Highlander modules.
12  */
13 #include <linux/init.h>
14 #include <linux/io.h>
15 #include <linux/platform_device.h>
16 #include <linux/ata_platform.h>
17 #include <linux/types.h>
18 #include <linux/mtd/physmap.h>
19 #include <linux/i2c.h>
20 #include <linux/irq.h>
21 #include <linux/interrupt.h>
22 #include <linux/usb/r8a66597.h>
23 #include <linux/usb/m66592.h>
24 #include <linux/clkdev.h>
25 #include <net/ax88796.h>
26 #include <asm/machvec.h>
27 #include <mach/highlander.h>
28 #include <asm/clock.h>
29 #include <asm/heartbeat.h>
30 #include <asm/io.h>
31 #include <asm/io_trapped.h>
32 
33 static struct r8a66597_platdata r8a66597_data = {
34 	.xtal = R8A66597_PLATDATA_XTAL_12MHZ,
35 	.vif = 1,
36 };
37 
38 static struct resource r8a66597_usb_host_resources[] = {
39 	[0] = {
40 		.start	= 0xA4200000,
41 		.end	= 0xA42000FF,
42 		.flags	= IORESOURCE_MEM,
43 	},
44 	[1] = {
45 		.start	= IRQ_EXT1,		/* irq number */
46 		.end	= IRQ_EXT1,
47 		.flags	= IORESOURCE_IRQ | IRQF_TRIGGER_LOW,
48 	},
49 };
50 
51 static struct platform_device r8a66597_usb_host_device = {
52 	.name		= "r8a66597_hcd",
53 	.id		= -1,
54 	.dev = {
55 		.dma_mask		= NULL,		/* don't use dma */
56 		.coherent_dma_mask	= 0xffffffff,
57 		.platform_data		= &r8a66597_data,
58 	},
59 	.num_resources	= ARRAY_SIZE(r8a66597_usb_host_resources),
60 	.resource	= r8a66597_usb_host_resources,
61 };
62 
63 static struct m66592_platdata usbf_platdata = {
64 	.xtal = M66592_PLATDATA_XTAL_24MHZ,
65 	.vif = 1,
66 };
67 
68 static struct resource m66592_usb_peripheral_resources[] = {
69 	[0] = {
70 		.name	= "m66592_udc",
71 		.start	= 0xb0000000,
72 		.end	= 0xb00000FF,
73 		.flags	= IORESOURCE_MEM,
74 	},
75 	[1] = {
76 		.name	= "m66592_udc",
77 		.start	= IRQ_EXT4,		/* irq number */
78 		.end	= IRQ_EXT4,
79 		.flags	= IORESOURCE_IRQ,
80 	},
81 };
82 
83 static struct platform_device m66592_usb_peripheral_device = {
84 	.name		= "m66592_udc",
85 	.id		= -1,
86 	.dev = {
87 		.dma_mask		= NULL,		/* don't use dma */
88 		.coherent_dma_mask	= 0xffffffff,
89 		.platform_data		= &usbf_platdata,
90 	},
91 	.num_resources	= ARRAY_SIZE(m66592_usb_peripheral_resources),
92 	.resource	= m66592_usb_peripheral_resources,
93 };
94 
95 static struct resource cf_ide_resources[] = {
96 	[0] = {
97 		.start	= PA_AREA5_IO + 0x1000,
98 		.end	= PA_AREA5_IO + 0x1000 + 0x08 - 1,
99 		.flags	= IORESOURCE_MEM,
100 	},
101 	[1] = {
102 		.start	= PA_AREA5_IO + 0x80c,
103 		.end	= PA_AREA5_IO + 0x80c + 0x16 - 1,
104 		.flags	= IORESOURCE_MEM,
105 	},
106 	[2] = {
107 		.start	= IRQ_CF,
108 		.flags	= IORESOURCE_IRQ,
109 	},
110 };
111 
112 static struct pata_platform_info pata_info = {
113 	.ioport_shift	= 1,
114 };
115 
116 static struct platform_device cf_ide_device  = {
117 	.name		= "pata_platform",
118 	.id		= -1,
119 	.num_resources	= ARRAY_SIZE(cf_ide_resources),
120 	.resource	= cf_ide_resources,
121 	.dev	= {
122 		.platform_data	= &pata_info,
123 	},
124 };
125 
126 static struct resource heartbeat_resources[] = {
127 	[0] = {
128 		.start	= PA_OBLED,
129 		.end	= PA_OBLED,
130 		.flags	= IORESOURCE_MEM,
131 	},
132 };
133 
134 #ifndef CONFIG_SH_R7785RP
135 static unsigned char heartbeat_bit_pos[] = { 2, 1, 0, 3, 6, 5, 4, 7 };
136 
137 static struct heartbeat_data heartbeat_data = {
138 	.bit_pos	= heartbeat_bit_pos,
139 	.nr_bits	= ARRAY_SIZE(heartbeat_bit_pos),
140 };
141 #endif
142 
143 static struct platform_device heartbeat_device = {
144 	.name		= "heartbeat",
145 	.id		= -1,
146 
147 	/* R7785RP has a slightly more sensible FPGA.. */
148 #ifndef CONFIG_SH_R7785RP
149 	.dev	= {
150 		.platform_data	= &heartbeat_data,
151 	},
152 #endif
153 	.num_resources	= ARRAY_SIZE(heartbeat_resources),
154 	.resource	= heartbeat_resources,
155 };
156 
157 static struct ax_plat_data ax88796_platdata = {
158 	.flags          = AXFLG_HAS_93CX6,
159 	.wordlength     = 2,
160 	.dcr_val        = 0x1,
161 	.rcr_val        = 0x40,
162 };
163 
164 static struct resource ax88796_resources[] = {
165 	{
166 #ifdef CONFIG_SH_R7780RP
167 		.start  = 0xa5800400,
168 		.end    = 0xa5800400 + (0x20 * 0x2) - 1,
169 #else
170 		.start  = 0xa4100400,
171 		.end    = 0xa4100400 + (0x20 * 0x2) - 1,
172 #endif
173 		.flags  = IORESOURCE_MEM,
174 	},
175 	{
176 		.start  = IRQ_AX88796,
177 		.end    = IRQ_AX88796,
178 		.flags  = IORESOURCE_IRQ,
179 	},
180 };
181 
182 static struct platform_device ax88796_device = {
183 	.name           = "ax88796",
184 	.id             = 0,
185 
186 	.dev    = {
187 		.platform_data = &ax88796_platdata,
188 	},
189 
190 	.num_resources  = ARRAY_SIZE(ax88796_resources),
191 	.resource       = ax88796_resources,
192 };
193 
194 static struct mtd_partition nor_flash_partitions[] = {
195 	{
196 		.name		= "loader",
197 		.offset		= 0x00000000,
198 		.size		= 512 * 1024,
199 	},
200 	{
201 		.name		= "bootenv",
202 		.offset		= MTDPART_OFS_APPEND,
203 		.size		= 512 * 1024,
204 	},
205 	{
206 		.name		= "kernel",
207 		.offset		= MTDPART_OFS_APPEND,
208 		.size		= 4 * 1024 * 1024,
209 	},
210 	{
211 		.name		= "data",
212 		.offset		= MTDPART_OFS_APPEND,
213 		.size		= MTDPART_SIZ_FULL,
214 	},
215 };
216 
217 static struct physmap_flash_data nor_flash_data = {
218 	.width		= 4,
219 	.parts		= nor_flash_partitions,
220 	.nr_parts	= ARRAY_SIZE(nor_flash_partitions),
221 };
222 
223 /* This config is flash board for mass production. */
224 static struct resource nor_flash_resources[] = {
225 	[0]	= {
226 		.start	= PA_NORFLASH_ADDR,
227 		.end	= PA_NORFLASH_ADDR + PA_NORFLASH_SIZE - 1,
228 		.flags	= IORESOURCE_MEM,
229 	}
230 };
231 
232 static struct platform_device nor_flash_device = {
233 	.name		= "physmap-flash",
234 	.dev		= {
235 		.platform_data	= &nor_flash_data,
236 	},
237 	.num_resources	= ARRAY_SIZE(nor_flash_resources),
238 	.resource	= nor_flash_resources,
239 };
240 
241 static struct resource smbus_resources[] = {
242 	[0] = {
243 		.start	= PA_SMCR,
244 		.end	= PA_SMCR + 0x100 - 1,
245 		.flags	= IORESOURCE_MEM,
246 	},
247 	[1] = {
248 		.start	= IRQ_SMBUS,
249 		.end	= IRQ_SMBUS,
250 		.flags	= IORESOURCE_IRQ,
251 	},
252 };
253 
254 static struct platform_device smbus_device = {
255 	.name		= "i2c-highlander",
256 	.id		= 0,
257 	.num_resources	= ARRAY_SIZE(smbus_resources),
258 	.resource	= smbus_resources,
259 };
260 
261 static struct i2c_board_info __initdata highlander_i2c_devices[] = {
262 	{
263 		I2C_BOARD_INFO("r2025sd", 0x32),
264 	},
265 };
266 
267 static struct platform_device *r7780rp_devices[] __initdata = {
268 	&r8a66597_usb_host_device,
269 	&m66592_usb_peripheral_device,
270 	&heartbeat_device,
271 	&smbus_device,
272 	&nor_flash_device,
273 #ifndef CONFIG_SH_R7780RP
274 	&ax88796_device,
275 #endif
276 };
277 
278 /*
279  * The CF is connected using a 16-bit bus where 8-bit operations are
280  * unsupported. The linux ata driver is however using 8-bit operations, so
281  * insert a trapped io filter to convert 8-bit operations into 16-bit.
282  */
283 static struct trapped_io cf_trapped_io = {
284 	.resource		= cf_ide_resources,
285 	.num_resources		= 2,
286 	.minimum_bus_width	= 16,
287 };
288 
289 static int __init r7780rp_devices_setup(void)
290 {
291 	int ret = 0;
292 
293 #ifndef CONFIG_SH_R7780RP
294 	if (register_trapped_io(&cf_trapped_io) == 0)
295 		ret |= platform_device_register(&cf_ide_device);
296 #endif
297 
298 	ret |= platform_add_devices(r7780rp_devices,
299 				    ARRAY_SIZE(r7780rp_devices));
300 
301 	ret |= i2c_register_board_info(0, highlander_i2c_devices,
302 				       ARRAY_SIZE(highlander_i2c_devices));
303 
304 	return ret;
305 }
306 device_initcall(r7780rp_devices_setup);
307 
308 /*
309  * Platform specific clocks
310  */
311 static int ivdr_clk_enable(struct clk *clk)
312 {
313 	__raw_writew(__raw_readw(PA_IVDRCTL) | (1 << IVDR_CK_ON), PA_IVDRCTL);
314 	return 0;
315 }
316 
317 static void ivdr_clk_disable(struct clk *clk)
318 {
319 	__raw_writew(__raw_readw(PA_IVDRCTL) & ~(1 << IVDR_CK_ON), PA_IVDRCTL);
320 }
321 
322 static struct sh_clk_ops ivdr_clk_ops = {
323 	.enable		= ivdr_clk_enable,
324 	.disable	= ivdr_clk_disable,
325 };
326 
327 static struct clk ivdr_clk = {
328 	.ops		= &ivdr_clk_ops,
329 };
330 
331 static struct clk *r7780rp_clocks[] = {
332 	&ivdr_clk,
333 };
334 
335 static struct clk_lookup lookups[] = {
336 	/* main clocks */
337 	CLKDEV_CON_ID("ivdr_clk", &ivdr_clk),
338 };
339 
340 static void r7780rp_power_off(void)
341 {
342 	if (mach_is_r7780mp() || mach_is_r7785rp())
343 		__raw_writew(0x0001, PA_POFF);
344 }
345 
346 /*
347  * Initialize the board
348  */
349 static void __init highlander_setup(char **cmdline_p)
350 {
351 	u16 ver = __raw_readw(PA_VERREG);
352 	int i;
353 
354 	printk(KERN_INFO "Renesas Solutions Highlander %s support.\n",
355 			 mach_is_r7780rp() ? "R7780RP-1" :
356 			 mach_is_r7780mp() ? "R7780MP"	 :
357 					     "R7785RP");
358 
359 	printk(KERN_INFO "Board version: %d (revision %d), "
360 			 "FPGA version: %d (revision %d)\n",
361 			 (ver >> 12) & 0xf, (ver >> 8) & 0xf,
362 			 (ver >>  4) & 0xf, ver & 0xf);
363 
364 	highlander_plat_pinmux_setup();
365 
366 	/*
367 	 * Enable the important clocks right away..
368 	 */
369 	for (i = 0; i < ARRAY_SIZE(r7780rp_clocks); i++) {
370 		struct clk *clk = r7780rp_clocks[i];
371 
372 		clk_register(clk);
373 		clk_enable(clk);
374 	}
375 
376 	clkdev_add_table(lookups, ARRAY_SIZE(lookups));
377 
378 	__raw_writew(0x0000, PA_OBLED);	/* Clear LED. */
379 
380 	if (mach_is_r7780rp())
381 		__raw_writew(0x0001, PA_SDPOW);	/* SD Power ON */
382 
383 	__raw_writew(__raw_readw(PA_IVDRCTL) | 0x01, PA_IVDRCTL);	/* Si13112 */
384 
385 	pm_power_off = r7780rp_power_off;
386 }
387 
388 static unsigned char irl2irq[HL_NR_IRL];
389 
390 static int highlander_irq_demux(int irq)
391 {
392 	if (irq >= HL_NR_IRL + 16 || irq < 16 || !irl2irq[irq - 16])
393 		return irq;
394 
395 	return irl2irq[irq - 16];
396 }
397 
398 static void __init highlander_init_irq(void)
399 {
400 	unsigned char *ucp = highlander_plat_irq_setup();
401 
402 	if (ucp) {
403 		plat_irq_setup_pins(IRQ_MODE_IRL3210);
404 		memcpy(irl2irq, ucp, HL_NR_IRL);
405 	}
406 }
407 
408 /*
409  * The Machine Vector
410  */
411 static struct sh_machine_vector mv_highlander __initmv = {
412 	.mv_name		= "Highlander",
413 	.mv_setup		= highlander_setup,
414 	.mv_init_irq		= highlander_init_irq,
415 	.mv_irq_demux		= highlander_irq_demux,
416 };
417