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
26static 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
45static struct pata_platform_info pata_info = {
46	.ioport_shift	= 1,
47};
48
49static 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
59static struct spi_board_info spi_bus[] = {
60	{
61		.modalias	= "rtc-r9701",
62		.max_speed_hz	= 1000000,
63		.mode		= SPI_MODE_3,
64	},
65};
66
67static 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
73static struct sh_spi_info spi_info = {
74	.num_chipselect = 1,
75	.chip_select = r2d_chip_select,
76};
77
78static struct resource spi_sh_sci_resources[] = {
79	{
80		.start	= 0xffe00000,
81		.end	= 0xffe0001f,
82		.flags	= IORESOURCE_MEM,
83	},
84};
85
86static 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
96static struct resource heartbeat_resources[] = {
97	[0] = {
98		.start	= PA_OUTPORT,
99		.end	= PA_OUTPORT,
100		.flags	= IORESOURCE_MEM,
101	},
102};
103
104static struct platform_device heartbeat_device = {
105	.name		= "heartbeat",
106	.id		= -1,
107	.num_resources	= ARRAY_SIZE(heartbeat_resources),
108	.resource	= heartbeat_resources,
109};
110
111static 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
128static 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
141static 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
150static 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
158static 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
165static struct sm501_initdata sm501_initdata = {
166	.devices	= SM501_USE_USB_HOST | SM501_USE_UART0,
167};
168
169static struct sm501_platdata sm501_platform_data = {
170	.init		= &sm501_initdata,
171	.fb		= &sm501_fb_pdata,
172};
173
174static 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
184static 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
206static struct physmap_flash_data flash_data = {
207	.width		= 2,
208	.nr_parts	= ARRAY_SIZE(r2d_partitions),
209	.parts		= r2d_partitions,
210};
211
212static struct resource flash_resource = {
213	.start		= 0x00000000,
214	.end		= 0x02000000,
215	.flags		= IORESOURCE_MEM,
216};
217
218static 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
228static 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 */
239static struct trapped_io cf_trapped_io = {
240	.resource		= cf_ide_resources,
241	.num_resources		= 2,
242	.minimum_bus_width	= 16,
243};
244
245static 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}
258device_initcall(rts7751r2d_devices_setup);
259
260static void rts7751r2d_power_off(void)
261{
262	__raw_writew(0x0001, PA_POWOFF);
263}
264
265/*
266 * Initialize the board
267 */
268static 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 */
300static 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