1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * linux/arch/arm/mach-pxa/idp.c
4 *
5 * Copyright (c) 2001 Cliff Brake, Accelent Systems Inc.
6 *
7 * 2001-09-13: Cliff Brake <cbrake@accelent.com>
8 * Initial code
9 *
10 * 2005-02-15: Cliff Brake <cliff.brake@gmail.com>
11 * <http://www.vibren.com> <http://bec-systems.com>
12 * Updated for 2.6 kernel
13 */
14
15 #include <linux/init.h>
16 #include <linux/interrupt.h>
17 #include <linux/irq.h>
18 #include <linux/leds.h>
19 #include <linux/platform_device.h>
20 #include <linux/fb.h>
21
22 #include <asm/setup.h>
23 #include <asm/memory.h>
24 #include <asm/mach-types.h>
25 #include <asm/irq.h>
26
27 #include <asm/mach/arch.h>
28 #include <asm/mach/map.h>
29
30 #include "pxa25x.h"
31 #include "idp.h"
32 #include <linux/platform_data/video-pxafb.h>
33 #include <linux/platform_data/mmc-pxamci.h>
34 #include <linux/smc91x.h>
35
36 #include "generic.h"
37 #include "devices.h"
38
39 /* TODO:
40 * - add pxa2xx_audio_ops_t device structure
41 * - Ethernet interrupt
42 */
43
44 static unsigned long idp_pin_config[] __initdata = {
45 /* LCD */
46 GPIOxx_LCD_DSTN_16BPP,
47
48 /* BTUART */
49 GPIO42_BTUART_RXD,
50 GPIO43_BTUART_TXD,
51 GPIO44_BTUART_CTS,
52 GPIO45_BTUART_RTS,
53
54 /* STUART */
55 GPIO46_STUART_RXD,
56 GPIO47_STUART_TXD,
57
58 /* MMC */
59 GPIO6_MMC_CLK,
60 GPIO8_MMC_CS0,
61
62 /* Ethernet */
63 GPIO33_nCS_5, /* Ethernet CS */
64 GPIO4_GPIO, /* Ethernet IRQ */
65 };
66
67 static struct resource smc91x_resources[] = {
68 [0] = {
69 .start = (IDP_ETH_PHYS + 0x300),
70 .end = (IDP_ETH_PHYS + 0xfffff),
71 .flags = IORESOURCE_MEM,
72 },
73 [1] = {
74 .start = PXA_GPIO_TO_IRQ(4),
75 .end = PXA_GPIO_TO_IRQ(4),
76 .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
77 }
78 };
79
80 static struct smc91x_platdata smc91x_platdata = {
81 .flags = SMC91X_USE_8BIT | SMC91X_USE_16BIT | SMC91X_USE_32BIT |
82 SMC91X_USE_DMA | SMC91X_NOWAIT,
83 .pxa_u16_align4 = true,
84 };
85
86 static struct platform_device smc91x_device = {
87 .name = "smc91x",
88 .id = 0,
89 .num_resources = ARRAY_SIZE(smc91x_resources),
90 .resource = smc91x_resources,
91 .dev.platform_data = &smc91x_platdata,
92 };
93
idp_backlight_power(int on)94 static void idp_backlight_power(int on)
95 {
96 if (on) {
97 IDP_CPLD_LCD |= (1<<1);
98 } else {
99 IDP_CPLD_LCD &= ~(1<<1);
100 }
101 }
102
idp_vlcd(int on)103 static void idp_vlcd(int on)
104 {
105 if (on) {
106 IDP_CPLD_LCD |= (1<<2);
107 } else {
108 IDP_CPLD_LCD &= ~(1<<2);
109 }
110 }
111
idp_lcd_power(int on,struct fb_var_screeninfo * var)112 static void idp_lcd_power(int on, struct fb_var_screeninfo *var)
113 {
114 if (on) {
115 IDP_CPLD_LCD |= (1<<0);
116 } else {
117 IDP_CPLD_LCD &= ~(1<<0);
118 }
119
120 /* call idp_vlcd for now as core driver does not support
121 * both power and vlcd hooks. Note, this is not technically
122 * the correct sequence, but seems to work. Disclaimer:
123 * this may eventually damage the display.
124 */
125
126 idp_vlcd(on);
127 }
128
129 static struct pxafb_mode_info sharp_lm8v31_mode = {
130 .pixclock = 270000,
131 .xres = 640,
132 .yres = 480,
133 .bpp = 16,
134 .hsync_len = 1,
135 .left_margin = 3,
136 .right_margin = 3,
137 .vsync_len = 1,
138 .upper_margin = 0,
139 .lower_margin = 0,
140 .sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
141 .cmap_greyscale = 0,
142 };
143
144 static struct pxafb_mach_info sharp_lm8v31 = {
145 .modes = &sharp_lm8v31_mode,
146 .num_modes = 1,
147 .cmap_inverse = 0,
148 .cmap_static = 0,
149 .lcd_conn = LCD_COLOR_DSTN_16BPP | LCD_PCLK_EDGE_FALL |
150 LCD_AC_BIAS_FREQ(255),
151 .pxafb_backlight_power = &idp_backlight_power,
152 .pxafb_lcd_power = &idp_lcd_power
153 };
154
155 static struct pxamci_platform_data idp_mci_platform_data = {
156 .ocr_mask = MMC_VDD_32_33|MMC_VDD_33_34,
157 };
158
idp_init(void)159 static void __init idp_init(void)
160 {
161 printk("idp_init()\n");
162
163 pxa2xx_mfp_config(ARRAY_AND_SIZE(idp_pin_config));
164 pxa_set_ffuart_info(NULL);
165 pxa_set_btuart_info(NULL);
166 pxa_set_stuart_info(NULL);
167
168 platform_device_register(&smc91x_device);
169 //platform_device_register(&mst_audio_device);
170 pxa_set_fb_info(NULL, &sharp_lm8v31);
171 pxa_set_mci_info(&idp_mci_platform_data);
172 }
173
174 static struct map_desc idp_io_desc[] __initdata = {
175 {
176 .virtual = IDP_COREVOLT_VIRT,
177 .pfn = __phys_to_pfn(IDP_COREVOLT_PHYS),
178 .length = IDP_COREVOLT_SIZE,
179 .type = MT_DEVICE
180 }, {
181 .virtual = IDP_CPLD_VIRT,
182 .pfn = __phys_to_pfn(IDP_CPLD_PHYS),
183 .length = IDP_CPLD_SIZE,
184 .type = MT_DEVICE
185 }
186 };
187
idp_map_io(void)188 static void __init idp_map_io(void)
189 {
190 pxa25x_map_io();
191 iotable_init(idp_io_desc, ARRAY_SIZE(idp_io_desc));
192 }
193
194 /* LEDs */
195 #if defined(CONFIG_NEW_LEDS) && defined(CONFIG_LEDS_CLASS)
196 struct idp_led {
197 struct led_classdev cdev;
198 u8 mask;
199 };
200
201 /*
202 * The triggers lines up below will only be used if the
203 * LED triggers are compiled in.
204 */
205 static const struct {
206 const char *name;
207 const char *trigger;
208 } idp_leds[] = {
209 { "idp:green", "heartbeat", },
210 { "idp:red", "cpu0", },
211 };
212
idp_led_set(struct led_classdev * cdev,enum led_brightness b)213 static void idp_led_set(struct led_classdev *cdev,
214 enum led_brightness b)
215 {
216 struct idp_led *led = container_of(cdev,
217 struct idp_led, cdev);
218 u32 reg = IDP_CPLD_LED_CONTROL;
219
220 if (b != LED_OFF)
221 reg &= ~led->mask;
222 else
223 reg |= led->mask;
224
225 IDP_CPLD_LED_CONTROL = reg;
226 }
227
idp_led_get(struct led_classdev * cdev)228 static enum led_brightness idp_led_get(struct led_classdev *cdev)
229 {
230 struct idp_led *led = container_of(cdev,
231 struct idp_led, cdev);
232
233 return (IDP_CPLD_LED_CONTROL & led->mask) ? LED_OFF : LED_FULL;
234 }
235
idp_leds_init(void)236 static int __init idp_leds_init(void)
237 {
238 int i;
239
240 if (!machine_is_pxa_idp())
241 return -ENODEV;
242
243 for (i = 0; i < ARRAY_SIZE(idp_leds); i++) {
244 struct idp_led *led;
245
246 led = kzalloc(sizeof(*led), GFP_KERNEL);
247 if (!led)
248 break;
249
250 led->cdev.name = idp_leds[i].name;
251 led->cdev.brightness_set = idp_led_set;
252 led->cdev.brightness_get = idp_led_get;
253 led->cdev.default_trigger = idp_leds[i].trigger;
254
255 if (i == 0)
256 led->mask = IDP_HB_LED;
257 else
258 led->mask = IDP_BUSY_LED;
259
260 if (led_classdev_register(NULL, &led->cdev) < 0) {
261 kfree(led);
262 break;
263 }
264 }
265
266 return 0;
267 }
268
269 /*
270 * Since we may have triggers on any subsystem, defer registration
271 * until after subsystem_init.
272 */
273 fs_initcall(idp_leds_init);
274 #endif
275
276 MACHINE_START(PXA_IDP, "Vibren PXA255 IDP")
277 /* Maintainer: Vibren Technologies */
278 .map_io = idp_map_io,
279 .nr_irqs = PXA_NR_IRQS,
280 .init_irq = pxa25x_init_irq,
281 .handle_irq = pxa25x_handle_irq,
282 .init_time = pxa_timer_init,
283 .init_machine = idp_init,
284 .restart = pxa_restart,
285 MACHINE_END
286
