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authorLinus Torvalds <torvalds@linux-foundation.org>2012-05-26 15:31:49 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2012-05-26 15:31:49 -0400
commit2c757fd5d1a92086f225a75a8fac7cab242d11b0 (patch)
treed150ea105242d551f6959c2525472295e151144c /arch/arm/mach-s3c24xx
parentce53044c68cf4fb6c50a2a0d88786be65fae7235 (diff)
parent424663566c43ce87e8b33228860bf882f1ea61bf (diff)
Merge tag 'cleanup2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull arm-soc cleanups (part 2) from Olof Johansson: "More cleanups, continuing an earlier set with omap and samsung specific cleanups. These could not go into the first set because they have dependencies on various other series that in turn depend on the first cleanups." Fixed up conflicts in arch/arm/plat-omap/counter_32k.c due to commit bd0493eaaf5c: "move read_{boot,persistent}_clock to the architecture level" that changed how the persistent clocks were handled. And trivial conflicts in arch/arm/mach-omap1/common.h due to just independent changes close to each other. * tag 'cleanup2' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (35 commits) ARM: SAMSUNG: merge plat-s5p into plat-samsung ARM: SAMSUNG: move options for common s5p into plat-samsung/Kconfig ARM: SAMSUNG: move setup code for s5p mfc and mipiphy into plat-samsung ARM: SAMSUNG: move platform device for s5p uart into plat-samsung ARM: SAMSUNG: move hr timer for common s5p into plat-samsung ARM: SAMSUNG: move pm part for common s5p into plat-samsung ARM: SAMSUNG: move interrupt part for common s5p into plat-samsung ARM: SAMSUNG: move clock part for common s5p into plat-samsung ARM: S3C24XX: Use common macro to define resources on dev-uart.c ARM: S3C24XX: move common clock init into common.c ARM: S3C24XX: move common power-management code to mach-s3c24xx ARM: S3C24XX: move plat-s3c24xx/dev-uart.c into common.c ARM: S3C24XX: move plat-s3c24xx/cpu.c ARM: OMAP2+: Kconfig: convert SOC_OMAPAM33XX to SOC_AM33XX ARM: OMAP2+: Kconfig: convert SOC_OMAPTI81XX to SOC_TI81XX GPMC: add ECC control definitions ARM: OMAP2+: dmtimer: remove redundant sysconfig context restore ARM: OMAP: AM35xx: convert 3517 detection/flags to AM35xx ARM: OMAP: AM35xx: remove redunant cpu_is checks for AM3505 ARM: OMAP1: Pass dma request lines in platform data to MMC driver ...
Diffstat (limited to 'arch/arm/mach-s3c24xx')
-rw-r--r--arch/arm/mach-s3c24xx/Makefile6
-rw-r--r--arch/arm/mach-s3c24xx/common.c303
-rw-r--r--arch/arm/mach-s3c24xx/irq-pm.c95
-rw-r--r--arch/arm/mach-s3c24xx/pm.c149
-rw-r--r--arch/arm/mach-s3c24xx/sleep.S84
5 files changed, 637 insertions, 0 deletions
diff --git a/arch/arm/mach-s3c24xx/Makefile b/arch/arm/mach-s3c24xx/Makefile
index 3518fe812d5f..270a0b6f4f22 100644
--- a/arch/arm/mach-s3c24xx/Makefile
+++ b/arch/arm/mach-s3c24xx/Makefile
@@ -14,6 +14,8 @@ obj- :=
14 14
15# core 15# core
16 16
17obj-y += common.o
18
17obj-$(CONFIG_CPU_S3C2410) += s3c2410.o 19obj-$(CONFIG_CPU_S3C2410) += s3c2410.o
18obj-$(CONFIG_S3C2410_DMA) += dma-s3c2410.o 20obj-$(CONFIG_S3C2410_DMA) += dma-s3c2410.o
19obj-$(CONFIG_S3C2410_PM) += pm-s3c2410.o sleep-s3c2410.o 21obj-$(CONFIG_S3C2410_PM) += pm-s3c2410.o sleep-s3c2410.o
@@ -33,6 +35,10 @@ obj-$(CONFIG_S3C2440_DMA) += dma-s3c2440.o
33 35
34obj-$(CONFIG_CPU_S3C2443) += s3c2443.o irq-s3c2443.o clock-s3c2443.o 36obj-$(CONFIG_CPU_S3C2443) += s3c2443.o irq-s3c2443.o clock-s3c2443.o
35 37
38# PM
39
40obj-$(CONFIG_PM) += pm.o irq-pm.o sleep.o
41
36# common code 42# common code
37 43
38obj-$(CONFIG_S3C2443_COMMON) += common-s3c2443.o 44obj-$(CONFIG_S3C2443_COMMON) += common-s3c2443.o
diff --git a/arch/arm/mach-s3c24xx/common.c b/arch/arm/mach-s3c24xx/common.c
new file mode 100644
index 000000000000..56cdd34cce41
--- /dev/null
+++ b/arch/arm/mach-s3c24xx/common.c
@@ -0,0 +1,303 @@
1/* linux/arch/arm/plat-s3c24xx/cpu.c
2 *
3 * Copyright (c) 2004-2005 Simtec Electronics
4 * http://www.simtec.co.uk/products/SWLINUX/
5 * Ben Dooks <ben@simtec.co.uk>
6 *
7 * Common code for S3C24XX machines
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22*/
23
24
25#include <linux/init.h>
26#include <linux/module.h>
27#include <linux/interrupt.h>
28#include <linux/ioport.h>
29#include <linux/serial_core.h>
30#include <linux/platform_device.h>
31#include <linux/delay.h>
32#include <linux/io.h>
33
34#include <mach/hardware.h>
35#include <mach/regs-clock.h>
36#include <asm/irq.h>
37#include <asm/cacheflush.h>
38#include <asm/system_info.h>
39#include <asm/system_misc.h>
40
41#include <asm/mach/arch.h>
42#include <asm/mach/map.h>
43
44#include <mach/regs-clock.h>
45#include <mach/regs-gpio.h>
46#include <plat/regs-serial.h>
47
48#include <plat/cpu.h>
49#include <plat/devs.h>
50#include <plat/clock.h>
51#include <plat/s3c2410.h>
52#include <plat/s3c2412.h>
53#include <plat/s3c2416.h>
54#include <plat/s3c244x.h>
55#include <plat/s3c2443.h>
56#include <plat/cpu-freq.h>
57#include <plat/pll.h>
58
59/* table of supported CPUs */
60
61static const char name_s3c2410[] = "S3C2410";
62static const char name_s3c2412[] = "S3C2412";
63static const char name_s3c2416[] = "S3C2416/S3C2450";
64static const char name_s3c2440[] = "S3C2440";
65static const char name_s3c2442[] = "S3C2442";
66static const char name_s3c2442b[] = "S3C2442B";
67static const char name_s3c2443[] = "S3C2443";
68static const char name_s3c2410a[] = "S3C2410A";
69static const char name_s3c2440a[] = "S3C2440A";
70
71static struct cpu_table cpu_ids[] __initdata = {
72 {
73 .idcode = 0x32410000,
74 .idmask = 0xffffffff,
75 .map_io = s3c2410_map_io,
76 .init_clocks = s3c2410_init_clocks,
77 .init_uarts = s3c2410_init_uarts,
78 .init = s3c2410_init,
79 .name = name_s3c2410
80 },
81 {
82 .idcode = 0x32410002,
83 .idmask = 0xffffffff,
84 .map_io = s3c2410_map_io,
85 .init_clocks = s3c2410_init_clocks,
86 .init_uarts = s3c2410_init_uarts,
87 .init = s3c2410a_init,
88 .name = name_s3c2410a
89 },
90 {
91 .idcode = 0x32440000,
92 .idmask = 0xffffffff,
93 .map_io = s3c2440_map_io,
94 .init_clocks = s3c244x_init_clocks,
95 .init_uarts = s3c244x_init_uarts,
96 .init = s3c2440_init,
97 .name = name_s3c2440
98 },
99 {
100 .idcode = 0x32440001,
101 .idmask = 0xffffffff,
102 .map_io = s3c2440_map_io,
103 .init_clocks = s3c244x_init_clocks,
104 .init_uarts = s3c244x_init_uarts,
105 .init = s3c2440_init,
106 .name = name_s3c2440a
107 },
108 {
109 .idcode = 0x32440aaa,
110 .idmask = 0xffffffff,
111 .map_io = s3c2442_map_io,
112 .init_clocks = s3c244x_init_clocks,
113 .init_uarts = s3c244x_init_uarts,
114 .init = s3c2442_init,
115 .name = name_s3c2442
116 },
117 {
118 .idcode = 0x32440aab,
119 .idmask = 0xffffffff,
120 .map_io = s3c2442_map_io,
121 .init_clocks = s3c244x_init_clocks,
122 .init_uarts = s3c244x_init_uarts,
123 .init = s3c2442_init,
124 .name = name_s3c2442b
125 },
126 {
127 .idcode = 0x32412001,
128 .idmask = 0xffffffff,
129 .map_io = s3c2412_map_io,
130 .init_clocks = s3c2412_init_clocks,
131 .init_uarts = s3c2412_init_uarts,
132 .init = s3c2412_init,
133 .name = name_s3c2412,
134 },
135 { /* a newer version of the s3c2412 */
136 .idcode = 0x32412003,
137 .idmask = 0xffffffff,
138 .map_io = s3c2412_map_io,
139 .init_clocks = s3c2412_init_clocks,
140 .init_uarts = s3c2412_init_uarts,
141 .init = s3c2412_init,
142 .name = name_s3c2412,
143 },
144 { /* a strange version of the s3c2416 */
145 .idcode = 0x32450003,
146 .idmask = 0xffffffff,
147 .map_io = s3c2416_map_io,
148 .init_clocks = s3c2416_init_clocks,
149 .init_uarts = s3c2416_init_uarts,
150 .init = s3c2416_init,
151 .name = name_s3c2416,
152 },
153 {
154 .idcode = 0x32443001,
155 .idmask = 0xffffffff,
156 .map_io = s3c2443_map_io,
157 .init_clocks = s3c2443_init_clocks,
158 .init_uarts = s3c2443_init_uarts,
159 .init = s3c2443_init,
160 .name = name_s3c2443,
161 },
162};
163
164/* minimal IO mapping */
165
166static struct map_desc s3c_iodesc[] __initdata = {
167 IODESC_ENT(GPIO),
168 IODESC_ENT(IRQ),
169 IODESC_ENT(MEMCTRL),
170 IODESC_ENT(UART)
171};
172
173/* read cpu identificaiton code */
174
175static unsigned long s3c24xx_read_idcode_v5(void)
176{
177#if defined(CONFIG_CPU_S3C2416)
178 /* s3c2416 is v5, with S3C24XX_GSTATUS1 instead of S3C2412_GSTATUS1 */
179
180 u32 gs = __raw_readl(S3C24XX_GSTATUS1);
181
182 /* test for s3c2416 or similar device */
183 if ((gs >> 16) == 0x3245)
184 return gs;
185#endif
186
187#if defined(CONFIG_CPU_S3C2412) || defined(CONFIG_CPU_S3C2413)
188 return __raw_readl(S3C2412_GSTATUS1);
189#else
190 return 1UL; /* don't look like an 2400 */
191#endif
192}
193
194static unsigned long s3c24xx_read_idcode_v4(void)
195{
196 return __raw_readl(S3C2410_GSTATUS1);
197}
198
199static void s3c24xx_default_idle(void)
200{
201 unsigned long tmp;
202 int i;
203
204 /* idle the system by using the idle mode which will wait for an
205 * interrupt to happen before restarting the system.
206 */
207
208 /* Warning: going into idle state upsets jtag scanning */
209
210 __raw_writel(__raw_readl(S3C2410_CLKCON) | S3C2410_CLKCON_IDLE,
211 S3C2410_CLKCON);
212
213 /* the samsung port seems to do a loop and then unset idle.. */
214 for (i = 0; i < 50; i++)
215 tmp += __raw_readl(S3C2410_CLKCON); /* ensure loop not optimised out */
216
217 /* this bit is not cleared on re-start... */
218
219 __raw_writel(__raw_readl(S3C2410_CLKCON) & ~S3C2410_CLKCON_IDLE,
220 S3C2410_CLKCON);
221}
222
223void __init s3c24xx_init_io(struct map_desc *mach_desc, int size)
224{
225 arm_pm_idle = s3c24xx_default_idle;
226
227 /* initialise the io descriptors we need for initialisation */
228 iotable_init(mach_desc, size);
229 iotable_init(s3c_iodesc, ARRAY_SIZE(s3c_iodesc));
230
231 if (cpu_architecture() >= CPU_ARCH_ARMv5) {
232 samsung_cpu_id = s3c24xx_read_idcode_v5();
233 } else {
234 samsung_cpu_id = s3c24xx_read_idcode_v4();
235 }
236 s3c24xx_init_cpu();
237
238 s3c_init_cpu(samsung_cpu_id, cpu_ids, ARRAY_SIZE(cpu_ids));
239}
240
241/* Serial port registrations */
242
243static struct resource s3c2410_uart0_resource[] = {
244 [0] = DEFINE_RES_MEM(S3C2410_PA_UART0, SZ_16K),
245 [1] = DEFINE_RES_NAMED(IRQ_S3CUART_RX0, \
246 IRQ_S3CUART_ERR0 - IRQ_S3CUART_RX0 + 1, \
247 NULL, IORESOURCE_IRQ)
248};
249
250static struct resource s3c2410_uart1_resource[] = {
251 [0] = DEFINE_RES_MEM(S3C2410_PA_UART1, SZ_16K),
252 [1] = DEFINE_RES_NAMED(IRQ_S3CUART_RX1, \
253 IRQ_S3CUART_ERR1 - IRQ_S3CUART_RX1 + 1, \
254 NULL, IORESOURCE_IRQ)
255};
256
257static struct resource s3c2410_uart2_resource[] = {
258 [0] = DEFINE_RES_MEM(S3C2410_PA_UART2, SZ_16K),
259 [1] = DEFINE_RES_NAMED(IRQ_S3CUART_RX2, \
260 IRQ_S3CUART_ERR2 - IRQ_S3CUART_RX2 + 1, \
261 NULL, IORESOURCE_IRQ)
262};
263
264static struct resource s3c2410_uart3_resource[] = {
265 [0] = DEFINE_RES_MEM(S3C2443_PA_UART3, SZ_16K),
266 [1] = DEFINE_RES_NAMED(IRQ_S3CUART_RX3, \
267 IRQ_S3CUART_ERR3 - IRQ_S3CUART_RX3 + 1, \
268 NULL, IORESOURCE_IRQ)
269};
270
271struct s3c24xx_uart_resources s3c2410_uart_resources[] __initdata = {
272 [0] = {
273 .resources = s3c2410_uart0_resource,
274 .nr_resources = ARRAY_SIZE(s3c2410_uart0_resource),
275 },
276 [1] = {
277 .resources = s3c2410_uart1_resource,
278 .nr_resources = ARRAY_SIZE(s3c2410_uart1_resource),
279 },
280 [2] = {
281 .resources = s3c2410_uart2_resource,
282 .nr_resources = ARRAY_SIZE(s3c2410_uart2_resource),
283 },
284 [3] = {
285 .resources = s3c2410_uart3_resource,
286 .nr_resources = ARRAY_SIZE(s3c2410_uart3_resource),
287 },
288};
289
290/* initialise all the clocks */
291
292void __init_or_cpufreq s3c24xx_setup_clocks(unsigned long fclk,
293 unsigned long hclk,
294 unsigned long pclk)
295{
296 clk_upll.rate = s3c24xx_get_pll(__raw_readl(S3C2410_UPLLCON),
297 clk_xtal.rate);
298
299 clk_mpll.rate = fclk;
300 clk_h.rate = hclk;
301 clk_p.rate = pclk;
302 clk_f.rate = fclk;
303}
diff --git a/arch/arm/mach-s3c24xx/irq-pm.c b/arch/arm/mach-s3c24xx/irq-pm.c
new file mode 100644
index 000000000000..0efb2e2848c8
--- /dev/null
+++ b/arch/arm/mach-s3c24xx/irq-pm.c
@@ -0,0 +1,95 @@
1/* linux/arch/arm/plat-s3c24xx/irq-om.c
2 *
3 * Copyright (c) 2003-2004 Simtec Electronics
4 * Ben Dooks <ben@simtec.co.uk>
5 * http://armlinux.simtec.co.uk/
6 *
7 * S3C24XX - IRQ PM code
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License version 2 as
11 * published by the Free Software Foundation.
12 */
13
14#include <linux/init.h>
15#include <linux/module.h>
16#include <linux/interrupt.h>
17#include <linux/irq.h>
18
19#include <plat/cpu.h>
20#include <plat/pm.h>
21#include <plat/irq.h>
22
23#include <asm/irq.h>
24
25/* state for IRQs over sleep */
26
27/* default is to allow for EINT0..EINT15, and IRQ_RTC as wakeup sources
28 *
29 * set bit to 1 in allow bitfield to enable the wakeup settings on it
30*/
31
32unsigned long s3c_irqwake_intallow = 1L << (IRQ_RTC - IRQ_EINT0) | 0xfL;
33unsigned long s3c_irqwake_eintallow = 0x0000fff0L;
34
35int s3c_irq_wake(struct irq_data *data, unsigned int state)
36{
37 unsigned long irqbit = 1 << (data->irq - IRQ_EINT0);
38
39 if (!(s3c_irqwake_intallow & irqbit))
40 return -ENOENT;
41
42 printk(KERN_INFO "wake %s for irq %d\n",
43 state ? "enabled" : "disabled", data->irq);
44
45 if (!state)
46 s3c_irqwake_intmask |= irqbit;
47 else
48 s3c_irqwake_intmask &= ~irqbit;
49
50 return 0;
51}
52
53static struct sleep_save irq_save[] = {
54 SAVE_ITEM(S3C2410_INTMSK),
55 SAVE_ITEM(S3C2410_INTSUBMSK),
56};
57
58/* the extint values move between the s3c2410/s3c2440 and the s3c2412
59 * so we use an array to hold them, and to calculate the address of
60 * the register at run-time
61*/
62
63static unsigned long save_extint[3];
64static unsigned long save_eintflt[4];
65static unsigned long save_eintmask;
66
67int s3c24xx_irq_suspend(void)
68{
69 unsigned int i;
70
71 for (i = 0; i < ARRAY_SIZE(save_extint); i++)
72 save_extint[i] = __raw_readl(S3C24XX_EXTINT0 + (i*4));
73
74 for (i = 0; i < ARRAY_SIZE(save_eintflt); i++)
75 save_eintflt[i] = __raw_readl(S3C24XX_EINFLT0 + (i*4));
76
77 s3c_pm_do_save(irq_save, ARRAY_SIZE(irq_save));
78 save_eintmask = __raw_readl(S3C24XX_EINTMASK);
79
80 return 0;
81}
82
83void s3c24xx_irq_resume(void)
84{
85 unsigned int i;
86
87 for (i = 0; i < ARRAY_SIZE(save_extint); i++)
88 __raw_writel(save_extint[i], S3C24XX_EXTINT0 + (i*4));
89
90 for (i = 0; i < ARRAY_SIZE(save_eintflt); i++)
91 __raw_writel(save_eintflt[i], S3C24XX_EINFLT0 + (i*4));
92
93 s3c_pm_do_restore(irq_save, ARRAY_SIZE(irq_save));
94 __raw_writel(save_eintmask, S3C24XX_EINTMASK);
95}
diff --git a/arch/arm/mach-s3c24xx/pm.c b/arch/arm/mach-s3c24xx/pm.c
new file mode 100644
index 000000000000..60627e63a254
--- /dev/null
+++ b/arch/arm/mach-s3c24xx/pm.c
@@ -0,0 +1,149 @@
1/* linux/arch/arm/plat-s3c24xx/pm.c
2 *
3 * Copyright (c) 2004-2006 Simtec Electronics
4 * Ben Dooks <ben@simtec.co.uk>
5 *
6 * S3C24XX Power Manager (Suspend-To-RAM) support
7 *
8 * See Documentation/arm/Samsung-S3C24XX/Suspend.txt for more information
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23 *
24 * Parts based on arch/arm/mach-pxa/pm.c
25 *
26 * Thanks to Dimitry Andric for debugging
27*/
28
29#include <linux/init.h>
30#include <linux/suspend.h>
31#include <linux/errno.h>
32#include <linux/time.h>
33#include <linux/gpio.h>
34#include <linux/interrupt.h>
35#include <linux/serial_core.h>
36#include <linux/io.h>
37
38#include <plat/regs-serial.h>
39#include <mach/regs-clock.h>
40#include <mach/regs-gpio.h>
41#include <mach/regs-mem.h>
42#include <mach/regs-irq.h>
43
44#include <asm/mach/time.h>
45
46#include <plat/gpio-cfg.h>
47#include <plat/pm.h>
48
49#define PFX "s3c24xx-pm: "
50
51static struct sleep_save core_save[] = {
52 SAVE_ITEM(S3C2410_LOCKTIME),
53 SAVE_ITEM(S3C2410_CLKCON),
54
55 /* we restore the timings here, with the proviso that the board
56 * brings the system up in an slower, or equal frequency setting
57 * to the original system.
58 *
59 * if we cannot guarantee this, then things are going to go very
60 * wrong here, as we modify the refresh and both pll settings.
61 */
62
63 SAVE_ITEM(S3C2410_BWSCON),
64 SAVE_ITEM(S3C2410_BANKCON0),
65 SAVE_ITEM(S3C2410_BANKCON1),
66 SAVE_ITEM(S3C2410_BANKCON2),
67 SAVE_ITEM(S3C2410_BANKCON3),
68 SAVE_ITEM(S3C2410_BANKCON4),
69 SAVE_ITEM(S3C2410_BANKCON5),
70
71#ifndef CONFIG_CPU_FREQ
72 SAVE_ITEM(S3C2410_CLKDIVN),
73 SAVE_ITEM(S3C2410_MPLLCON),
74 SAVE_ITEM(S3C2410_REFRESH),
75#endif
76 SAVE_ITEM(S3C2410_UPLLCON),
77 SAVE_ITEM(S3C2410_CLKSLOW),
78};
79
80static struct sleep_save misc_save[] = {
81 SAVE_ITEM(S3C2410_DCLKCON),
82};
83
84/* s3c_pm_check_resume_pin
85 *
86 * check to see if the pin is configured correctly for sleep mode, and
87 * make any necessary adjustments if it is not
88*/
89
90static void s3c_pm_check_resume_pin(unsigned int pin, unsigned int irqoffs)
91{
92 unsigned long irqstate;
93 unsigned long pinstate;
94 int irq = gpio_to_irq(pin);
95
96 if (irqoffs < 4)
97 irqstate = s3c_irqwake_intmask & (1L<<irqoffs);
98 else
99 irqstate = s3c_irqwake_eintmask & (1L<<irqoffs);
100
101 pinstate = s3c_gpio_getcfg(pin);
102
103 if (!irqstate) {
104 if (pinstate == S3C2410_GPIO_IRQ)
105 S3C_PMDBG("Leaving IRQ %d (pin %d) as is\n", irq, pin);
106 } else {
107 if (pinstate == S3C2410_GPIO_IRQ) {
108 S3C_PMDBG("Disabling IRQ %d (pin %d)\n", irq, pin);
109 s3c_gpio_cfgpin(pin, S3C2410_GPIO_INPUT);
110 }
111 }
112}
113
114/* s3c_pm_configure_extint
115 *
116 * configure all external interrupt pins
117*/
118
119void s3c_pm_configure_extint(void)
120{
121 int pin;
122
123 /* for each of the external interrupts (EINT0..EINT15) we
124 * need to check wether it is an external interrupt source,
125 * and then configure it as an input if it is not
126 */
127
128 for (pin = S3C2410_GPF(0); pin <= S3C2410_GPF(7); pin++) {
129 s3c_pm_check_resume_pin(pin, pin - S3C2410_GPF(0));
130 }
131
132 for (pin = S3C2410_GPG(0); pin <= S3C2410_GPG(7); pin++) {
133 s3c_pm_check_resume_pin(pin, (pin - S3C2410_GPG(0))+8);
134 }
135}
136
137
138void s3c_pm_restore_core(void)
139{
140 s3c_pm_do_restore_core(core_save, ARRAY_SIZE(core_save));
141 s3c_pm_do_restore(misc_save, ARRAY_SIZE(misc_save));
142}
143
144void s3c_pm_save_core(void)
145{
146 s3c_pm_do_save(misc_save, ARRAY_SIZE(misc_save));
147 s3c_pm_do_save(core_save, ARRAY_SIZE(core_save));
148}
149
diff --git a/arch/arm/mach-s3c24xx/sleep.S b/arch/arm/mach-s3c24xx/sleep.S
new file mode 100644
index 000000000000..c56612569b40
--- /dev/null
+++ b/arch/arm/mach-s3c24xx/sleep.S
@@ -0,0 +1,84 @@
1/* linux/arch/arm/plat-s3c24xx/sleep.S
2 *
3 * Copyright (c) 2004 Simtec Electronics
4 * Ben Dooks <ben@simtec.co.uk>
5 *
6 * S3C2410 Power Manager (Suspend-To-RAM) support
7 *
8 * Based on PXA/SA1100 sleep code by:
9 * Nicolas Pitre, (c) 2002 Monta Vista Software Inc
10 * Cliff Brake, (c) 2001
11 *
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License as published by
14 * the Free Software Foundation; either version 2 of the License, or
15 * (at your option) any later version.
16 *
17 * This program is distributed in the hope that it will be useful,
18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
21 *
22 * You should have received a copy of the GNU General Public License
23 * along with this program; if not, write to the Free Software
24 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
25*/
26
27#include <linux/linkage.h>
28#include <asm/assembler.h>
29#include <mach/hardware.h>
30#include <mach/map.h>
31
32#include <mach/regs-gpio.h>
33#include <mach/regs-clock.h>
34#include <mach/regs-mem.h>
35#include <plat/regs-serial.h>
36
37/* CONFIG_DEBUG_RESUME is dangerous if your bootloader does not
38 * reset the UART configuration, only enable if you really need this!
39*/
40//#define CONFIG_DEBUG_RESUME
41
42 .text
43
44 /* sleep magic, to allow the bootloader to check for an valid
45 * image to resume to. Must be the first word before the
46 * s3c_cpu_resume entry.
47 */
48
49 .word 0x2bedf00d
50
51 /* s3c_cpu_resume
52 *
53 * resume code entry for bootloader to call
54 */
55
56ENTRY(s3c_cpu_resume)
57 mov r0, #PSR_I_BIT | PSR_F_BIT | SVC_MODE
58 msr cpsr_c, r0
59
60 @@ load UART to allow us to print the two characters for
61 @@ resume debug
62
63 mov r2, #S3C24XX_PA_UART & 0xff000000
64 orr r2, r2, #S3C24XX_PA_UART & 0xff000
65
66#if 0
67 /* SMDK2440 LED set */
68 mov r14, #S3C24XX_PA_GPIO
69 ldr r12, [ r14, #0x54 ]
70 bic r12, r12, #3<<4
71 orr r12, r12, #1<<7
72 str r12, [ r14, #0x54 ]
73#endif
74
75#ifdef CONFIG_DEBUG_RESUME
76 mov r3, #'L'
77 strb r3, [ r2, #S3C2410_UTXH ]
781001:
79 ldrb r14, [ r3, #S3C2410_UTRSTAT ]
80 tst r14, #S3C2410_UTRSTAT_TXE
81 beq 1001b
82#endif /* CONFIG_DEBUG_RESUME */
83
84 b cpu_resume