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1/* linux/arch/arm/mach-vt8500/devices.c
2 *
3 * Copyright (C) 2010 Alexey Charkov <alchark@gmail.com>
4 *
5 * This software is licensed under the terms of the GNU General Public
6 * License version 2, as published by the Free Software Foundation, and
7 * may be copied, distributed, and modified under those terms.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 */
15
16#include <linux/kernel.h>
17#include <linux/io.h>
18#include <linux/device.h>
19#include <linux/dma-mapping.h>
20#include <linux/platform_device.h>
21#include <linux/pwm_backlight.h>
22#include <linux/memblock.h>
23
24#include <asm/mach/arch.h>
25
26#include <mach/vt8500fb.h>
27#include <mach/i8042.h>
28#include "devices.h"
29
30/* These can't use resources currently */
31unsigned long wmt_ic_base __initdata;
32unsigned long wmt_sic_base __initdata;
33unsigned long wmt_gpio_base __initdata;
34unsigned long wmt_pmc_base __initdata;
35unsigned long wmt_i8042_base __initdata;
36
37int wmt_nr_irqs __initdata;
38int wmt_timer_irq __initdata;
39int wmt_gpio_ext_irq[8] __initdata;
40
41/* Should remain accessible after init.
42 * i8042 driver desperately calls for attention...
43 */
44int wmt_i8042_kbd_irq;
45int wmt_i8042_aux_irq;
46
47static u64 fb_dma_mask = DMA_BIT_MASK(32);
48
49struct platform_device vt8500_device_lcdc = {
50 .name = "vt8500-lcd",
51 .id = 0,
52 .dev = {
53 .dma_mask = &fb_dma_mask,
54 .coherent_dma_mask = DMA_BIT_MASK(32),
55 },
56};
57
58struct platform_device vt8500_device_wm8505_fb = {
59 .name = "wm8505-fb",
60 .id = 0,
61};
62
63/* Smallest to largest */
64static struct vt8500fb_platform_data panels[] = {
65#ifdef CONFIG_WMT_PANEL_800X480
66{
67 .xres_virtual = 800,
68 .yres_virtual = 480 * 2,
69 .mode = {
70 .name = "800x480",
71 .xres = 800,
72 .yres = 480,
73 .left_margin = 88,
74 .right_margin = 40,
75 .upper_margin = 32,
76 .lower_margin = 11,
77 .hsync_len = 0,
78 .vsync_len = 1,
79 .vmode = FB_VMODE_NONINTERLACED,
80 },
81},
82#endif
83#ifdef CONFIG_WMT_PANEL_800X600
84{
85 .xres_virtual = 800,
86 .yres_virtual = 600 * 2,
87 .mode = {
88 .name = "800x600",
89 .xres = 800,
90 .yres = 600,
91 .left_margin = 88,
92 .right_margin = 40,
93 .upper_margin = 32,
94 .lower_margin = 11,
95 .hsync_len = 0,
96 .vsync_len = 1,
97 .vmode = FB_VMODE_NONINTERLACED,
98 },
99},
100#endif
101#ifdef CONFIG_WMT_PANEL_1024X576
102{
103 .xres_virtual = 1024,
104 .yres_virtual = 576 * 2,
105 .mode = {
106 .name = "1024x576",
107 .xres = 1024,
108 .yres = 576,
109 .left_margin = 40,
110 .right_margin = 24,
111 .upper_margin = 32,
112 .lower_margin = 11,
113 .hsync_len = 96,
114 .vsync_len = 2,
115 .vmode = FB_VMODE_NONINTERLACED,
116 },
117},
118#endif
119#ifdef CONFIG_WMT_PANEL_1024X600
120{
121 .xres_virtual = 1024,
122 .yres_virtual = 600 * 2,
123 .mode = {
124 .name = "1024x600",
125 .xres = 1024,
126 .yres = 600,
127 .left_margin = 66,
128 .right_margin = 2,
129 .upper_margin = 19,
130 .lower_margin = 1,
131 .hsync_len = 23,
132 .vsync_len = 8,
133 .vmode = FB_VMODE_NONINTERLACED,
134 },
135},
136#endif
137};
138
139static int current_panel_idx __initdata = ARRAY_SIZE(panels) - 1;
140
141static int __init panel_setup(char *str)
142{
143 int i;
144
145 for (i = 0; i < ARRAY_SIZE(panels); i++) {
146 if (strcmp(panels[i].mode.name, str) == 0) {
147 current_panel_idx = i;
148 break;
149 }
150 }
151 return 0;
152}
153
154early_param("panel", panel_setup);
155
156static inline void preallocate_fb(struct vt8500fb_platform_data *p,
157 unsigned long align) {
158 p->video_mem_len = (p->xres_virtual * p->yres_virtual * 4) >>
159 (p->bpp > 16 ? 0 : (p->bpp > 8 ? 1 :
160 (8 / p->bpp) + 1));
161 p->video_mem_phys = (unsigned long)memblock_alloc(p->video_mem_len,
162 align);
163 p->video_mem_virt = phys_to_virt(p->video_mem_phys);
164}
165
166struct platform_device vt8500_device_uart0 = {
167 .name = "vt8500_serial",
168 .id = 0,
169};
170
171struct platform_device vt8500_device_uart1 = {
172 .name = "vt8500_serial",
173 .id = 1,
174};
175
176struct platform_device vt8500_device_uart2 = {
177 .name = "vt8500_serial",
178 .id = 2,
179};
180
181struct platform_device vt8500_device_uart3 = {
182 .name = "vt8500_serial",
183 .id = 3,
184};
185
186struct platform_device vt8500_device_uart4 = {
187 .name = "vt8500_serial",
188 .id = 4,
189};
190
191struct platform_device vt8500_device_uart5 = {
192 .name = "vt8500_serial",
193 .id = 5,
194};
195
196static u64 ehci_dma_mask = DMA_BIT_MASK(32);
197
198struct platform_device vt8500_device_ehci = {
199 .name = "vt8500-ehci",
200 .id = 0,
201 .dev = {
202 .dma_mask = &ehci_dma_mask,
203 .coherent_dma_mask = DMA_BIT_MASK(32),
204 },
205};
206
207struct platform_device vt8500_device_ge_rops = {
208 .name = "wmt_ge_rops",
209 .id = -1,
210};
211
212struct platform_device vt8500_device_pwm = {
213 .name = "vt8500-pwm",
214 .id = 0,
215};
216
217static struct platform_pwm_backlight_data vt8500_pwmbl_data = {
218 .pwm_id = 0,
219 .max_brightness = 128,
220 .dft_brightness = 70,
221 .pwm_period_ns = 250000, /* revisit when clocks are implemented */
222};
223
224struct platform_device vt8500_device_pwmbl = {
225 .name = "pwm-backlight",
226 .id = 0,
227 .dev = {
228 .platform_data = &vt8500_pwmbl_data,
229 },
230};
231
232struct platform_device vt8500_device_rtc = {
233 .name = "vt8500-rtc",
234 .id = 0,
235};
236
237struct map_desc wmt_io_desc[] __initdata = {
238 /* SoC MMIO registers */
239 [0] = {
240 .virtual = 0xf8000000,
241 .pfn = __phys_to_pfn(0xd8000000),
242 .length = 0x00390000, /* max of all chip variants */
243 .type = MT_DEVICE
244 },
245 /* PCI I/O space, numbers tied to those in <mach/io.h> */
246 [1] = {
247 .virtual = 0xf0000000,
248 .pfn = __phys_to_pfn(0xc0000000),
249 .length = SZ_64K,
250 .type = MT_DEVICE
251 },
252};
253
254void __init vt8500_reserve_mem(void)
255{
256#ifdef CONFIG_FB_VT8500
257 panels[current_panel_idx].bpp = 16; /* Always use RGB565 */
258 preallocate_fb(&panels[current_panel_idx], SZ_4M);
259 vt8500_device_lcdc.dev.platform_data = &panels[current_panel_idx];
260#endif
261}
262
263void __init wm8505_reserve_mem(void)
264{
265#if defined CONFIG_FB_WM8505
266 panels[current_panel_idx].bpp = 32; /* Always use RGB888 */
267 preallocate_fb(&panels[current_panel_idx], 32);
268 vt8500_device_wm8505_fb.dev.platform_data = &panels[current_panel_idx];
269#endif
270}