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 <mach/hardware.h>
26 #include <asm/irq.h>
27
28 #include <asm/mach/arch.h>
29 #include <asm/mach/map.h>
30
31 #include "pxa25x.h"
32 #include "idp.h"
33 #include <linux/platform_data/video-pxafb.h>
34 #include <mach/bitfield.h>
35 #include <linux/platform_data/mmc-pxamci.h>
36 #include <linux/smc91x.h>
37
38 #include "generic.h"
39 #include "devices.h"
40
41 /* TODO:
42 * - add pxa2xx_audio_ops_t device structure
43 * - Ethernet interrupt
44 */
45
46 static unsigned long idp_pin_config[] __initdata = {
47 /* LCD */
48 GPIOxx_LCD_DSTN_16BPP,
49
50 /* BTUART */
51 GPIO42_BTUART_RXD,
52 GPIO43_BTUART_TXD,
53 GPIO44_BTUART_CTS,
54 GPIO45_BTUART_RTS,
55
56 /* STUART */
57 GPIO46_STUART_RXD,
58 GPIO47_STUART_TXD,
59
60 /* MMC */
61 GPIO6_MMC_CLK,
62 GPIO8_MMC_CS0,
63
64 /* Ethernet */
65 GPIO33_nCS_5, /* Ethernet CS */
66 GPIO4_GPIO, /* Ethernet IRQ */
67 };
68
69 static struct resource smc91x_resources[] = {
70 [0] = {
71 .start = (IDP_ETH_PHYS + 0x300),
72 .end = (IDP_ETH_PHYS + 0xfffff),
73 .flags = IORESOURCE_MEM,
74 },
75 [1] = {
76 .start = PXA_GPIO_TO_IRQ(4),
77 .end = PXA_GPIO_TO_IRQ(4),
78 .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
79 }
80 };
81
82 static struct smc91x_platdata smc91x_platdata = {
83 .flags = SMC91X_USE_8BIT | SMC91X_USE_16BIT | SMC91X_USE_32BIT |
84 SMC91X_USE_DMA | SMC91X_NOWAIT,
85 .pxa_u16_align4 = true,
86 };
87
88 static struct platform_device smc91x_device = {
89 .name = "smc91x",
90 .id = 0,
91 .num_resources = ARRAY_SIZE(smc91x_resources),
92 .resource = smc91x_resources,
93 .dev.platform_data = &smc91x_platdata,
94 };
95
idp_backlight_power(int on)96 static void idp_backlight_power(int on)
97 {
98 if (on) {
99 IDP_CPLD_LCD |= (1<<1);
100 } else {
101 IDP_CPLD_LCD &= ~(1<<1);
102 }
103 }
104
idp_vlcd(int on)105 static void idp_vlcd(int on)
106 {
107 if (on) {
108 IDP_CPLD_LCD |= (1<<2);
109 } else {
110 IDP_CPLD_LCD &= ~(1<<2);
111 }
112 }
113
idp_lcd_power(int on,struct fb_var_screeninfo * var)114 static void idp_lcd_power(int on, struct fb_var_screeninfo *var)
115 {
116 if (on) {
117 IDP_CPLD_LCD |= (1<<0);
118 } else {
119 IDP_CPLD_LCD &= ~(1<<0);
120 }
121
122 /* call idp_vlcd for now as core driver does not support
123 * both power and vlcd hooks. Note, this is not technically
124 * the correct sequence, but seems to work. Disclaimer:
125 * this may eventually damage the display.
126 */
127
128 idp_vlcd(on);
129 }
130
131 static struct pxafb_mode_info sharp_lm8v31_mode = {
132 .pixclock = 270000,
133 .xres = 640,
134 .yres = 480,
135 .bpp = 16,
136 .hsync_len = 1,
137 .left_margin = 3,
138 .right_margin = 3,
139 .vsync_len = 1,
140 .upper_margin = 0,
141 .lower_margin = 0,
142 .sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
143 .cmap_greyscale = 0,
144 };
145
146 static struct pxafb_mach_info sharp_lm8v31 = {
147 .modes = &sharp_lm8v31_mode,
148 .num_modes = 1,
149 .cmap_inverse = 0,
150 .cmap_static = 0,
151 .lcd_conn = LCD_COLOR_DSTN_16BPP | LCD_PCLK_EDGE_FALL |
152 LCD_AC_BIAS_FREQ(255),
153 .pxafb_backlight_power = &idp_backlight_power,
154 .pxafb_lcd_power = &idp_lcd_power
155 };
156
157 static struct pxamci_platform_data idp_mci_platform_data = {
158 .ocr_mask = MMC_VDD_32_33|MMC_VDD_33_34,
159 };
160
idp_init(void)161 static void __init idp_init(void)
162 {
163 printk("idp_init()\n");
164
165 pxa2xx_mfp_config(ARRAY_AND_SIZE(idp_pin_config));
166 pxa_set_ffuart_info(NULL);
167 pxa_set_btuart_info(NULL);
168 pxa_set_stuart_info(NULL);
169
170 platform_device_register(&smc91x_device);
171 //platform_device_register(&mst_audio_device);
172 pxa_set_fb_info(NULL, &sharp_lm8v31);
173 pxa_set_mci_info(&idp_mci_platform_data);
174 }
175
176 static struct map_desc idp_io_desc[] __initdata = {
177 {
178 .virtual = IDP_COREVOLT_VIRT,
179 .pfn = __phys_to_pfn(IDP_COREVOLT_PHYS),
180 .length = IDP_COREVOLT_SIZE,
181 .type = MT_DEVICE
182 }, {
183 .virtual = IDP_CPLD_VIRT,
184 .pfn = __phys_to_pfn(IDP_CPLD_PHYS),
185 .length = IDP_CPLD_SIZE,
186 .type = MT_DEVICE
187 }
188 };
189
idp_map_io(void)190 static void __init idp_map_io(void)
191 {
192 pxa25x_map_io();
193 iotable_init(idp_io_desc, ARRAY_SIZE(idp_io_desc));
194 }
195
196 /* LEDs */
197 #if defined(CONFIG_NEW_LEDS) && defined(CONFIG_LEDS_CLASS)
198 struct idp_led {
199 struct led_classdev cdev;
200 u8 mask;
201 };
202
203 /*
204 * The triggers lines up below will only be used if the
205 * LED triggers are compiled in.
206 */
207 static const struct {
208 const char *name;
209 const char *trigger;
210 } idp_leds[] = {
211 { "idp:green", "heartbeat", },
212 { "idp:red", "cpu0", },
213 };
214
idp_led_set(struct led_classdev * cdev,enum led_brightness b)215 static void idp_led_set(struct led_classdev *cdev,
216 enum led_brightness b)
217 {
218 struct idp_led *led = container_of(cdev,
219 struct idp_led, cdev);
220 u32 reg = IDP_CPLD_LED_CONTROL;
221
222 if (b != LED_OFF)
223 reg &= ~led->mask;
224 else
225 reg |= led->mask;
226
227 IDP_CPLD_LED_CONTROL = reg;
228 }
229
idp_led_get(struct led_classdev * cdev)230 static enum led_brightness idp_led_get(struct led_classdev *cdev)
231 {
232 struct idp_led *led = container_of(cdev,
233 struct idp_led, cdev);
234
235 return (IDP_CPLD_LED_CONTROL & led->mask) ? LED_OFF : LED_FULL;
236 }
237
idp_leds_init(void)238 static int __init idp_leds_init(void)
239 {
240 int i;
241
242 if (!machine_is_pxa_idp())
243 return -ENODEV;
244
245 for (i = 0; i < ARRAY_SIZE(idp_leds); i++) {
246 struct idp_led *led;
247
248 led = kzalloc(sizeof(*led), GFP_KERNEL);
249 if (!led)
250 break;
251
252 led->cdev.name = idp_leds[i].name;
253 led->cdev.brightness_set = idp_led_set;
254 led->cdev.brightness_get = idp_led_get;
255 led->cdev.default_trigger = idp_leds[i].trigger;
256
257 if (i == 0)
258 led->mask = IDP_HB_LED;
259 else
260 led->mask = IDP_BUSY_LED;
261
262 if (led_classdev_register(NULL, &led->cdev) < 0) {
263 kfree(led);
264 break;
265 }
266 }
267
268 return 0;
269 }
270
271 /*
272 * Since we may have triggers on any subsystem, defer registration
273 * until after subsystem_init.
274 */
275 fs_initcall(idp_leds_init);
276 #endif
277
278 MACHINE_START(PXA_IDP, "Vibren PXA255 IDP")
279 /* Maintainer: Vibren Technologies */
280 .map_io = idp_map_io,
281 .nr_irqs = PXA_NR_IRQS,
282 .init_irq = pxa25x_init_irq,
283 .handle_irq = pxa25x_handle_irq,
284 .init_time = pxa_timer_init,
285 .init_machine = idp_init,
286 .restart = pxa_restart,
287 MACHINE_END
288