xref: /kernel/linux/linux-5.10/arch/arm/mach-pxa/idp.c (revision 8c2ecf20) 
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
46static 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
69static 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
82static 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
88static 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
96static 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
105static 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
114static 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
131static 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
146static 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
157static struct pxamci_platform_data idp_mci_platform_data = {
158	.ocr_mask		= MMC_VDD_32_33|MMC_VDD_33_34,
159};
160
161static 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
176static 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
190static 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)
198struct 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 */
207static const struct {
208	const char *name;
209	const char *trigger;
210} idp_leds[] = {
211	{ "idp:green", "heartbeat", },
212	{ "idp:red", "cpu0", },
213};
214
215static 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
230static 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
238static 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 */
275fs_initcall(idp_leds_init);
276#endif
277
278MACHINE_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,
287MACHINE_END
288