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Srinidhi Kasagaraa44ef42009-11-28 08:17:18 +01001/*
Linus Walleijc15def12011-12-15 13:38:40 +01002 * Copyright (C) 2008-2009 ST-Ericsson SA
Srinidhi Kasagaraa44ef42009-11-28 08:17:18 +01003 *
4 * Author: Srinidhi KASAGAR <srinidhi.kasagar@stericsson.com>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2, as
8 * published by the Free Software Foundation.
9 *
10 */
11#include <linux/types.h>
12#include <linux/init.h>
13#include <linux/device.h>
14#include <linux/amba/bus.h>
Rabin Vincentaa90eb92011-02-08 09:24:37 +053015#include <linux/interrupt.h>
Srinidhi Kasagaraa44ef42009-11-28 08:17:18 +010016#include <linux/irq.h>
17#include <linux/platform_device.h>
Rabin Vincentcc2c1332010-03-01 05:03:31 +010018#include <linux/io.h>
Lee Jones3a8e39c2012-07-06 12:46:23 +020019#include <linux/mfd/abx500/ab8500.h>
Lee Jones661c6af2012-10-08 14:20:10 +010020#include <linux/mfd/dbx500-prcmu.h>
Lee Jonesfa86a762012-09-27 10:17:36 +010021#include <linux/of.h>
22#include <linux/of_platform.h>
23#include <linux/regulator/machine.h>
Linus Walleij7cb15e12012-10-10 14:27:58 +020024#include <linux/platform_data/pinctrl-nomadik.h>
Linus Walleij4040d102012-10-03 14:26:12 +020025#include <linux/random.h>
Srinidhi Kasagaraa44ef42009-11-28 08:17:18 +010026
Axel Lin5caecb42012-09-02 20:25:47 +080027#include <asm/pmu.h>
Srinidhi Kasagaraa44ef42009-11-28 08:17:18 +010028#include <asm/mach/map.h>
Linus Torvaldsb8edf842012-12-13 10:57:16 -080029
Arnd Bergmanne657bcf2013-03-21 22:51:12 +010030#include "setup.h"
31#include "devices.h"
Arnd Bergmanneba52742013-03-21 22:51:08 +010032#include "irqs.h"
Rabin Vincent94bdc0e2010-03-03 04:54:37 +010033
Rabin Vincentfbf1eadf2010-09-29 19:46:32 +053034#include "devices-db8500.h"
Mian Yousaf Kaukab6f3f3c3f2011-01-21 18:21:50 +010035#include "ste-dma40-db8500.h"
Linus Walleij174e7792013-03-19 15:41:55 +010036#include "db8500-regs.h"
Lee Jonesfa86a762012-09-27 10:17:36 +010037#include "board-mop500.h"
Linus Walleij7a4f2602012-09-19 19:31:19 +020038#include "id.h"
Rabin Vincentfbf1eadf2010-09-29 19:46:32 +053039
Srinidhi Kasagaraa44ef42009-11-28 08:17:18 +010040/* minimum static i/o mapping required to boot U8500 platforms */
Rabin Vincentabf12d72010-12-08 11:07:59 +053041static struct map_desc u8500_uart_io_desc[] __initdata = {
Rabin Vincent92389ca2010-12-08 11:07:57 +053042 __IO_DEV_DESC(U8500_UART0_BASE, SZ_4K),
43 __IO_DEV_DESC(U8500_UART2_BASE, SZ_4K),
Rabin Vincentabf12d72010-12-08 11:07:59 +053044};
Linus Walleijbc71c092012-01-23 11:54:44 +010045/* U8500 and U9540 common io_desc */
46static struct map_desc u8500_common_io_desc[] __initdata = {
Linus Walleij215e83d2011-12-14 18:15:42 +010047 /* SCU base also covers GIC CPU BASE and TWD with its 4K page */
48 __IO_DEV_DESC(U8500_SCU_BASE, SZ_4K),
Rabin Vincent92389ca2010-12-08 11:07:57 +053049 __IO_DEV_DESC(U8500_GIC_DIST_BASE, SZ_4K),
50 __IO_DEV_DESC(U8500_L2CC_BASE, SZ_4K),
Rabin Vincent92389ca2010-12-08 11:07:57 +053051 __IO_DEV_DESC(U8500_MTU0_BASE, SZ_4K),
Rabin Vincent92389ca2010-12-08 11:07:57 +053052 __IO_DEV_DESC(U8500_BACKUPRAM0_BASE, SZ_8K),
53
54 __IO_DEV_DESC(U8500_CLKRST1_BASE, SZ_4K),
55 __IO_DEV_DESC(U8500_CLKRST2_BASE, SZ_4K),
56 __IO_DEV_DESC(U8500_CLKRST3_BASE, SZ_4K),
57 __IO_DEV_DESC(U8500_CLKRST5_BASE, SZ_4K),
58 __IO_DEV_DESC(U8500_CLKRST6_BASE, SZ_4K),
59
Rabin Vincentc9c09572010-05-03 07:34:53 +010060 __IO_DEV_DESC(U8500_GPIO0_BASE, SZ_4K),
Rabin Vincent94bdc0e2010-03-03 04:54:37 +010061 __IO_DEV_DESC(U8500_GPIO1_BASE, SZ_4K),
62 __IO_DEV_DESC(U8500_GPIO2_BASE, SZ_4K),
63 __IO_DEV_DESC(U8500_GPIO3_BASE, SZ_4K),
Michel Jaouenee9581d2012-02-01 10:30:53 +010064};
65
66/* U8500 IO map specific description */
67static struct map_desc u8500_io_desc[] __initdata = {
68 __IO_DEV_DESC(U8500_PRCMU_BASE, SZ_4K),
Mattias Wallinfcbd4582010-12-02 16:20:42 +010069 __IO_DEV_DESC(U8500_PRCMU_TCDM_BASE, SZ_4K),
Michel Jaouenee9581d2012-02-01 10:30:53 +010070
71};
72
73/* U9540 IO map specific description */
74static struct map_desc u9540_io_desc[] __initdata = {
75 __IO_DEV_DESC(U8500_PRCMU_BASE, SZ_4K + SZ_8K),
76 __IO_DEV_DESC(U8500_PRCMU_TCDM_BASE, SZ_4K + SZ_8K),
Rabin Vincent75a36ee2010-03-01 05:05:56 +010077};
78
Srinidhi Kasagaraa44ef42009-11-28 08:17:18 +010079void __init u8500_map_io(void)
80{
Rabin Vincentabf12d72010-12-08 11:07:59 +053081 /*
82 * Map the UARTs early so that the DEBUG_LL stuff continues to work.
83 */
84 iotable_init(u8500_uart_io_desc, ARRAY_SIZE(u8500_uart_io_desc));
85
86 ux500_map_io();
87
Linus Walleijbc71c092012-01-23 11:54:44 +010088 iotable_init(u8500_common_io_desc, ARRAY_SIZE(u8500_common_io_desc));
Rabin Vincent75a36ee2010-03-01 05:05:56 +010089
Linus Walleije1bbb552012-08-09 17:10:36 +020090 if (cpu_is_ux540_family())
Michel Jaouenee9581d2012-02-01 10:30:53 +010091 iotable_init(u9540_io_desc, ARRAY_SIZE(u9540_io_desc));
92 else
93 iotable_init(u8500_io_desc, ARRAY_SIZE(u8500_io_desc));
Srinidhi Kasagaraa44ef42009-11-28 08:17:18 +010094}
95
Rabin Vincentaa90eb92011-02-08 09:24:37 +053096static struct resource db8500_pmu_resources[] = {
97 [0] = {
98 .start = IRQ_DB8500_PMU,
99 .end = IRQ_DB8500_PMU,
100 .flags = IORESOURCE_IRQ,
101 },
102};
103
104/*
105 * The PMU IRQ lines of two cores are wired together into a single interrupt.
106 * Bounce the interrupt to the other core if it's not ours.
107 */
108static irqreturn_t db8500_pmu_handler(int irq, void *dev, irq_handler_t handler)
109{
110 irqreturn_t ret = handler(irq, dev);
111 int other = !smp_processor_id();
112
113 if (ret == IRQ_NONE && cpu_online(other))
114 irq_set_affinity(irq, cpumask_of(other));
115
116 /*
117 * We should be able to get away with the amount of IRQ_NONEs we give,
118 * while still having the spurious IRQ detection code kick in if the
119 * interrupt really starts hitting spuriously.
120 */
121 return ret;
122}
123
Lee Jones3a8e39c2012-07-06 12:46:23 +0200124struct arm_pmu_platdata db8500_pmu_platdata = {
Rabin Vincentaa90eb92011-02-08 09:24:37 +0530125 .handle_irq = db8500_pmu_handler,
126};
127
128static struct platform_device db8500_pmu_device = {
129 .name = "arm-pmu",
Sudeep KarkadaNageshadf3d17e2012-07-19 09:50:21 +0100130 .id = -1,
Rabin Vincentaa90eb92011-02-08 09:24:37 +0530131 .num_resources = ARRAY_SIZE(db8500_pmu_resources),
132 .resource = db8500_pmu_resources,
133 .dev.platform_data = &db8500_pmu_platdata,
134};
135
136static struct platform_device *platform_devs[] __initdata = {
137 &u8500_dma40_device,
138 &db8500_pmu_device,
139};
140
Rabin Vincent01afdd12010-12-08 11:07:55 +0530141static resource_size_t __initdata db8500_gpio_base[] = {
142 U8500_GPIOBANK0_BASE,
143 U8500_GPIOBANK1_BASE,
144 U8500_GPIOBANK2_BASE,
145 U8500_GPIOBANK3_BASE,
146 U8500_GPIOBANK4_BASE,
147 U8500_GPIOBANK5_BASE,
148 U8500_GPIOBANK6_BASE,
149 U8500_GPIOBANK7_BASE,
150 U8500_GPIOBANK8_BASE,
151};
152
Lee Jones18403422012-02-06 11:22:21 -0800153static void __init db8500_add_gpios(struct device *parent)
Rabin Vincent01afdd12010-12-08 11:07:55 +0530154{
155 struct nmk_gpio_platform_data pdata = {
Linus Walleijc15def12011-12-15 13:38:40 +0100156 .supports_sleepmode = true,
Rabin Vincent01afdd12010-12-08 11:07:55 +0530157 };
158
Julia Lawall7abdcff2013-08-11 18:51:44 +0200159 dbx500_add_gpios(parent, db8500_gpio_base,
160 ARRAY_SIZE(db8500_gpio_base),
Rabin Vincent01afdd12010-12-08 11:07:55 +0530161 IRQ_DB8500_GPIO0, &pdata);
Jonas Aabergf4828332012-10-25 08:46:53 +0200162 dbx500_add_pinctrl(parent, "pinctrl-db8500", U8500_PRCMU_BASE);
Rabin Vincent01afdd12010-12-08 11:07:55 +0530163}
164
Lee Jonesdf7c9bb2013-05-03 15:31:57 +0100165static int usb_db8500_dma_cfg[] = {
Lee Jones26955c07d2013-05-03 15:31:56 +0100166 DB8500_DMA_DEV38_USB_OTG_IEP_AND_OEP_1_9,
167 DB8500_DMA_DEV37_USB_OTG_IEP_AND_OEP_2_10,
168 DB8500_DMA_DEV36_USB_OTG_IEP_AND_OEP_3_11,
169 DB8500_DMA_DEV19_USB_OTG_IEP_AND_OEP_4_12,
170 DB8500_DMA_DEV18_USB_OTG_IEP_AND_OEP_5_13,
171 DB8500_DMA_DEV17_USB_OTG_IEP_AND_OEP_6_14,
172 DB8500_DMA_DEV16_USB_OTG_IEP_AND_OEP_7_15,
173 DB8500_DMA_DEV39_USB_OTG_IEP_AND_OEP_8
Mian Yousaf Kaukab6f3f3c3f2011-01-21 18:21:50 +0100174};
175
Lee Joneseda413c2012-02-06 11:22:24 -0800176static const char *db8500_read_soc_id(void)
177{
178 void __iomem *uid = __io_address(U8500_BB_UID_BASE);
179
Linus Walleij4040d102012-10-03 14:26:12 +0200180 /* Throw these device-specific numbers into the entropy pool */
181 add_device_randomness(uid, 0x14);
Lee Joneseda413c2012-02-06 11:22:24 -0800182 return kasprintf(GFP_KERNEL, "%08x%08x%08x%08x%08x",
Fabio Baltieri33c8abc2013-02-20 09:29:16 +0100183 readl((u32 *)uid+0),
Lee Joneseda413c2012-02-06 11:22:24 -0800184 readl((u32 *)uid+1), readl((u32 *)uid+2),
185 readl((u32 *)uid+3), readl((u32 *)uid+4));
186}
187
188static struct device * __init db8500_soc_device_init(void)
189{
190 const char *soc_id = db8500_read_soc_id();
191
192 return ux500_soc_device_init(soc_id);
193}
194
Srinidhi Kasagaraa44ef42009-11-28 08:17:18 +0100195/*
196 * This function is called from the board init
197 */
Lee Jones3210c052013-05-08 14:29:01 +0100198struct device * __init u8500_init_devices(void)
Srinidhi Kasagaraa44ef42009-11-28 08:17:18 +0100199{
Lee Joneseda413c2012-02-06 11:22:24 -0800200 struct device *parent;
Lee Jonesb024a0c2012-02-06 11:22:25 -0800201 int i;
Lee Joneseda413c2012-02-06 11:22:24 -0800202
203 parent = db8500_soc_device_init();
204
205 db8500_add_rtc(parent);
206 db8500_add_gpios(parent);
Lee Jonesdf7c9bb2013-05-03 15:31:57 +0100207 db8500_add_usb(parent, usb_db8500_dma_cfg, usb_db8500_dma_cfg);
Rabin Vincentfbf1eadf2010-09-29 19:46:32 +0530208
Lee Jonesf65c1982012-05-29 10:03:09 +0800209 for (i = 0; i < ARRAY_SIZE(platform_devs); i++)
210 platform_devs[i]->dev.parent = parent;
211
212 platform_add_devices(platform_devs, ARRAY_SIZE(platform_devs));
213
214 return parent;
215}
216
Lee Jonesfa86a762012-09-27 10:17:36 +0100217#ifdef CONFIG_MACH_UX500_DT
Lee Jonesfa86a762012-09-27 10:17:36 +0100218static struct of_dev_auxdata u8500_auxdata_lookup[] __initdata = {
219 /* Requires call-back bindings. */
220 OF_DEV_AUXDATA("arm,cortex-a9-pmu", 0, "arm-pmu", &db8500_pmu_platdata),
Lee Jonescece5c42012-11-03 13:37:15 +0100221 /* Requires DMA bindings. */
Lee Jonesfa86a762012-09-27 10:17:36 +0100222 OF_DEV_AUXDATA("arm,pl022", 0x80002000, "ssp0", &ssp0_plat),
Lee Jones49c12952013-05-15 10:51:28 +0100223 OF_DEV_AUXDATA("arm,pl18x", 0x80126000, "sdi0", NULL),
224 OF_DEV_AUXDATA("arm,pl18x", 0x80118000, "sdi1", NULL),
225 OF_DEV_AUXDATA("arm,pl18x", 0x80005000, "sdi2", NULL),
226 OF_DEV_AUXDATA("arm,pl18x", 0x80114000, "sdi4", NULL),
Lee Jonesfa86a762012-09-27 10:17:36 +0100227 /* Requires clock name bindings. */
Lee Jonesdf790f52013-05-15 10:51:49 +0100228 OF_DEV_AUXDATA("stericsson,db8500-musb", 0xa03e0000, "musb-ux500.0", NULL),
Linus Walleij05ec2602013-02-07 10:17:31 +0100229 OF_DEV_AUXDATA("stericsson,db8500-prcmu", 0x80157000, "db8500-prcmu",
230 &db8500_prcmu_pdata),
Lee Jones7d2b64f2013-05-08 14:29:06 +0100231 OF_DEV_AUXDATA("smsc,lan9115", 0x50000000, "smsc911x.0", NULL),
Lee Jones946cc7d2013-05-16 12:27:23 +0100232 OF_DEV_AUXDATA("stericsson,ux500-cryp", 0xa03cb000, "cryp1", NULL),
Lee Jonesf016d442013-05-16 12:27:24 +0100233 OF_DEV_AUXDATA("stericsson,ux500-hash", 0xa03c2000, "hash1", NULL),
Fabio Baltierief95f7f2013-05-30 15:27:44 +0200234 OF_DEV_AUXDATA("stericsson,snd-soc-mop500", 0, "snd-soc-mop500.0",
235 NULL),
Lee Jonesfa86a762012-09-27 10:17:36 +0100236 /* Requires device name bindings. */
Lee Jones79d1d622013-05-22 15:22:58 +0100237 OF_DEV_AUXDATA("stericsson,db8500-pinctrl", U8500_PRCMU_BASE,
Fabio Baltieri9fcb4cc2012-12-18 10:12:12 +0100238 "pinctrl-db8500", NULL),
Lee Jonesfa86a762012-09-27 10:17:36 +0100239 /* Requires clock name and DMA bindings. */
240 OF_DEV_AUXDATA("stericsson,ux500-msp-i2s", 0x80123000,
241 "ux500-msp-i2s.0", &msp0_platform_data),
242 OF_DEV_AUXDATA("stericsson,ux500-msp-i2s", 0x80124000,
243 "ux500-msp-i2s.1", &msp1_platform_data),
244 OF_DEV_AUXDATA("stericsson,ux500-msp-i2s", 0x80117000,
245 "ux500-msp-i2s.2", &msp2_platform_data),
246 OF_DEV_AUXDATA("stericsson,ux500-msp-i2s", 0x80125000,
247 "ux500-msp-i2s.3", &msp3_platform_data),
Lee Jones252f27b2013-05-03 15:32:13 +0100248 /* Requires clock name bindings and channel address lookup table. */
Lee Jones0117f7c2013-05-15 10:52:00 +0100249 OF_DEV_AUXDATA("stericsson,db8500-dma40", 0x801C0000, "dma40.0", NULL),
Lee Jonesfa86a762012-09-27 10:17:36 +0100250 {},
251};
252
Lee Jonesc21a43b2013-04-02 14:21:53 +0100253static struct of_dev_auxdata u8540_auxdata_lookup[] __initdata = {
254 /* Requires DMA bindings. */
255 OF_DEV_AUXDATA("arm,pl011", 0x80120000, "uart0", NULL),
256 OF_DEV_AUXDATA("arm,pl011", 0x80121000, "uart1", NULL),
257 OF_DEV_AUXDATA("arm,pl011", 0x80007000, "uart2", NULL),
258 OF_DEV_AUXDATA("stericsson,db8500-prcmu", 0x80157000, "db8500-prcmu",
259 &db8500_prcmu_pdata),
260 {},
261};
262
Lee Jonesfa86a762012-09-27 10:17:36 +0100263static const struct of_device_id u8500_local_bus_nodes[] = {
264 /* only create devices below soc node */
265 { .compatible = "stericsson,db8500", },
266 { .compatible = "stericsson,db8500-prcmu", },
267 { .compatible = "simple-bus"},
268 { },
269};
270
271static void __init u8500_init_machine(void)
272{
Lee Jones1e74043a22013-05-15 10:51:51 +0100273 struct device *parent = db8500_soc_device_init();
Lee Jonesfa86a762012-09-27 10:17:36 +0100274
275 /* Pinmaps must be in place before devices register */
276 if (of_machine_is_compatible("st-ericsson,mop500"))
277 mop500_pinmaps_init();
Lee Jones265c3c02013-03-27 14:13:53 +0000278 else if (of_machine_is_compatible("calaosystems,snowball-a9500")) {
Lee Jonesfa86a762012-09-27 10:17:36 +0100279 snowball_pinmaps_init();
Lee Jones265c3c02013-03-27 14:13:53 +0000280 } else if (of_machine_is_compatible("st-ericsson,hrefv60+"))
Lee Jonesfa86a762012-09-27 10:17:36 +0100281 hrefv60_pinmaps_init();
Lee Jones58e5b9e2012-10-15 08:49:33 +0100282 else if (of_machine_is_compatible("st-ericsson,ccu9540")) {}
283 /* TODO: Add pinmaps for ccu9540 board. */
Lee Jonesfa86a762012-09-27 10:17:36 +0100284
Lee Jonesc21a43b2013-04-02 14:21:53 +0100285 /* automatically probe child nodes of dbx5x0 devices */
286 if (of_machine_is_compatible("st-ericsson,u8540"))
287 of_platform_populate(NULL, u8500_local_bus_nodes,
288 u8540_auxdata_lookup, parent);
289 else
290 of_platform_populate(NULL, u8500_local_bus_nodes,
291 u8500_auxdata_lookup, parent);
Lee Jonesfa86a762012-09-27 10:17:36 +0100292}
293
Lee Jones79b40752012-10-15 10:07:55 +0100294static const char * stericsson_dt_platform_compat[] = {
295 "st-ericsson,u8500",
296 "st-ericsson,u8540",
297 "st-ericsson,u9500",
298 "st-ericsson,u9540",
Lee Jonesfa86a762012-09-27 10:17:36 +0100299 NULL,
300};
301
Lee Jones46c1bf82012-10-15 08:55:17 +0100302DT_MACHINE_START(U8500_DT, "ST-Ericsson Ux5x0 platform (Device Tree Support)")
Lee Jonesf44c5fd2012-10-24 11:24:47 +0100303 .smp = smp_ops(ux500_smp_ops),
Lee Jonesfa86a762012-09-27 10:17:36 +0100304 .map_io = u8500_map_io,
305 .init_irq = ux500_init_irq,
306 /* we re-use nomadik timer here */
Stephen Warren6bb27d72012-11-08 12:40:59 -0700307 .init_time = ux500_timer_init,
Lee Jonesfa86a762012-09-27 10:17:36 +0100308 .init_machine = u8500_init_machine,
Lee Jones74a1c9a2012-09-28 14:20:03 +0100309 .init_late = NULL,
Lee Jones79b40752012-10-15 10:07:55 +0100310 .dt_compat = stericsson_dt_platform_compat,
Fabio Baltieribd93ec52013-06-14 15:22:40 +0200311 .restart = ux500_restart,
Lee Jonesfa86a762012-09-27 10:17:36 +0100312MACHINE_END
313
314#endif