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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/mips/au1000/db1x00
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'arch/mips/au1000/db1x00')
-rw-r--r--arch/mips/au1000/db1x00/Makefile9
-rw-r--r--arch/mips/au1000/db1x00/board_setup.c127
-rw-r--r--arch/mips/au1000/db1x00/init.c74
-rw-r--r--arch/mips/au1000/db1x00/irqmap.c72
-rw-r--r--arch/mips/au1000/db1x00/mirage_ts.c261
5 files changed, 543 insertions, 0 deletions
diff --git a/arch/mips/au1000/db1x00/Makefile b/arch/mips/au1000/db1x00/Makefile
new file mode 100644
index 000000000000..4c7d763f2113
--- /dev/null
+++ b/arch/mips/au1000/db1x00/Makefile
@@ -0,0 +1,9 @@
1#
2# Copyright 2000 MontaVista Software Inc.
3# Author: MontaVista Software, Inc.
4# ppopov@mvista.com or source@mvista.com
5#
6# Makefile for the Alchemy Semiconductor Db1x00 board.
7
8lib-y := init.o board_setup.o irqmap.o
9obj-$(CONFIG_WM97XX_COMODULE) += mirage_ts.o
diff --git a/arch/mips/au1000/db1x00/board_setup.c b/arch/mips/au1000/db1x00/board_setup.c
new file mode 100644
index 000000000000..ac05ba0ff63f
--- /dev/null
+++ b/arch/mips/au1000/db1x00/board_setup.c
@@ -0,0 +1,127 @@
1/*
2 *
3 * BRIEF MODULE DESCRIPTION
4 * Alchemy Db1x00 board setup.
5 *
6 * Copyright 2000 MontaVista Software Inc.
7 * Author: MontaVista Software, Inc.
8 * ppopov@mvista.com or source@mvista.com
9 *
10 * This program is free software; you can redistribute it and/or modify it
11 * under the terms of the GNU General Public License as published by the
12 * Free Software Foundation; either version 2 of the License, or (at your
13 * option) any later version.
14 *
15 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
16 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
17 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
18 * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
21 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
22 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 *
26 * You should have received a copy of the GNU General Public License along
27 * with this program; if not, write to the Free Software Foundation, Inc.,
28 * 675 Mass Ave, Cambridge, MA 02139, USA.
29 */
30#include <linux/config.h>
31#include <linux/init.h>
32#include <linux/sched.h>
33#include <linux/ioport.h>
34#include <linux/mm.h>
35#include <linux/console.h>
36#include <linux/mc146818rtc.h>
37#include <linux/delay.h>
38
39#include <asm/cpu.h>
40#include <asm/bootinfo.h>
41#include <asm/irq.h>
42#include <asm/mipsregs.h>
43#include <asm/reboot.h>
44#include <asm/pgtable.h>
45#include <asm/mach-au1x00/au1000.h>
46#include <asm/mach-db1x00/db1x00.h>
47
48/* not correct for db1550 */
49static BCSR * const bcsr = (BCSR *)0xAE000000;
50
51void board_reset (void)
52{
53 /* Hit BCSR.SYSTEM_CONTROL[SW_RST] */
54 au_writel(0x00000000, 0xAE00001C);
55}
56
57void __init board_setup(void)
58{
59 u32 pin_func;
60
61 pin_func = 0;
62 /* not valid for 1550 */
63#ifdef CONFIG_AU1X00_USB_DEVICE
64 // 2nd USB port is USB device
65 pin_func = au_readl(SYS_PINFUNC) & (u32)(~0x8000);
66 au_writel(pin_func, SYS_PINFUNC);
67#endif
68
69#if defined(CONFIG_IRDA) && (defined(CONFIG_SOC_AU1000) || defined(CONFIG_SOC_AU1100))
70 /* set IRFIRSEL instead of GPIO15 */
71 pin_func = au_readl(SYS_PINFUNC) | (u32)((1<<8));
72 au_writel(pin_func, SYS_PINFUNC);
73 /* power off until the driver is in use */
74 bcsr->resets &= ~BCSR_RESETS_IRDA_MODE_MASK;
75 bcsr->resets |= BCSR_RESETS_IRDA_MODE_OFF;
76 au_sync();
77#endif
78 au_writel(0, 0xAE000010); /* turn off pcmcia power */
79
80#ifdef CONFIG_MIPS_MIRAGE
81 /* enable GPIO[31:0] inputs */
82 au_writel(0, SYS_PININPUTEN);
83
84 /* GPIO[20] is output, tristate the other input primary GPIO's */
85 au_writel((u32)(~(1<<20)), SYS_TRIOUTCLR);
86
87 /* set GPIO[210:208] instead of SSI_0 */
88 pin_func = au_readl(SYS_PINFUNC) | (u32)(1);
89
90 /* set GPIO[215:211] for LED's */
91 pin_func |= (u32)((5<<2));
92
93 /* set GPIO[214:213] for more LED's */
94 pin_func |= (u32)((5<<12));
95
96 /* set GPIO[207:200] instead of PCMCIA/LCD */
97 pin_func |= (u32)((3<<17));
98 au_writel(pin_func, SYS_PINFUNC);
99
100 /* Enable speaker amplifier. This should
101 * be part of the audio driver.
102 */
103 au_writel(au_readl(GPIO2_DIR) | 0x200, GPIO2_DIR);
104 au_writel(0x02000200, GPIO2_OUTPUT);
105#endif
106
107 au_sync();
108
109#ifdef CONFIG_MIPS_DB1000
110 printk("AMD Alchemy Au1000/Db1000 Board\n");
111#endif
112#ifdef CONFIG_MIPS_DB1500
113 printk("AMD Alchemy Au1500/Db1500 Board\n");
114#endif
115#ifdef CONFIG_MIPS_DB1100
116 printk("AMD Alchemy Au1100/Db1100 Board\n");
117#endif
118#ifdef CONFIG_MIPS_BOSPORUS
119 printk("AMD Alchemy Bosporus Board\n");
120#endif
121#ifdef CONFIG_MIPS_MIRAGE
122 printk("AMD Alchemy Mirage Board\n");
123#endif
124#ifdef CONFIG_MIPS_DB1550
125 printk("AMD Alchemy Au1550/Db1550 Board\n");
126#endif
127}
diff --git a/arch/mips/au1000/db1x00/init.c b/arch/mips/au1000/db1x00/init.c
new file mode 100644
index 000000000000..51eee94a5e82
--- /dev/null
+++ b/arch/mips/au1000/db1x00/init.c
@@ -0,0 +1,74 @@
1/*
2 * BRIEF MODULE DESCRIPTION
3 * PB1000 board setup
4 *
5 * Copyright 2001 MontaVista Software Inc.
6 * Author: MontaVista Software, Inc.
7 * ppopov@mvista.com or source@mvista.com
8 *
9 * This program is free software; you can redistribute it and/or modify it
10 * under the terms of the GNU General Public License as published by the
11 * Free Software Foundation; either version 2 of the License, or (at your
12 * option) any later version.
13 *
14 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
15 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
16 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
17 * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
20 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
21 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 *
25 * You should have received a copy of the GNU General Public License along
26 * with this program; if not, write to the Free Software Foundation, Inc.,
27 * 675 Mass Ave, Cambridge, MA 02139, USA.
28 */
29
30#include <linux/init.h>
31#include <linux/mm.h>
32#include <linux/sched.h>
33#include <linux/bootmem.h>
34#include <asm/addrspace.h>
35#include <asm/bootinfo.h>
36#include <linux/config.h>
37#include <linux/string.h>
38#include <linux/kernel.h>
39
40int prom_argc;
41char **prom_argv, **prom_envp;
42extern void __init prom_init_cmdline(void);
43extern char *prom_getenv(char *envname);
44
45const char *get_system_type(void)
46{
47#ifdef CONFIG_MIPS_BOSPORUS
48 return "Alchemy Bosporus Gateway Reference";
49#else
50 return "Alchemy Db1x00";
51#endif
52}
53
54void __init prom_init(void)
55{
56 unsigned char *memsize_str;
57 unsigned long memsize;
58
59 prom_argc = fw_arg0;
60 prom_argv = (char **) fw_arg1;
61 prom_envp = (char **) fw_arg2;
62
63 mips_machgroup = MACH_GROUP_ALCHEMY;
64 mips_machtype = MACH_DB1000; /* set the platform # */
65
66 prom_init_cmdline();
67
68 memsize_str = prom_getenv("memsize");
69 if (!memsize_str)
70 memsize = 0x04000000;
71 else
72 memsize = simple_strtol(memsize_str, NULL, 0);
73 add_memory_region(0, memsize, BOOT_MEM_RAM);
74}
diff --git a/arch/mips/au1000/db1x00/irqmap.c b/arch/mips/au1000/db1x00/irqmap.c
new file mode 100644
index 000000000000..8f6ef0dbe1f8
--- /dev/null
+++ b/arch/mips/au1000/db1x00/irqmap.c
@@ -0,0 +1,72 @@
1/*
2 * BRIEF MODULE DESCRIPTION
3 * Au1xxx irq map table
4 *
5 * Copyright 2003 Embedded Edge, LLC
6 * dan@embeddededge.com
7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License as published by the
10 * Free Software Foundation; either version 2 of the License, or (at your
11 * option) any later version.
12 *
13 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
14 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
15 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
16 * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
17 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
18 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
19 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
20 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
22 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
23 *
24 * You should have received a copy of the GNU General Public License along
25 * with this program; if not, write to the Free Software Foundation, Inc.,
26 * 675 Mass Ave, Cambridge, MA 02139, USA.
27 */
28#include <linux/config.h>
29#include <linux/errno.h>
30#include <linux/init.h>
31#include <linux/irq.h>
32#include <linux/kernel_stat.h>
33#include <linux/module.h>
34#include <linux/signal.h>
35#include <linux/sched.h>
36#include <linux/types.h>
37#include <linux/interrupt.h>
38#include <linux/ioport.h>
39#include <linux/timex.h>
40#include <linux/slab.h>
41#include <linux/random.h>
42#include <linux/delay.h>
43#include <linux/bitops.h>
44
45#include <asm/bootinfo.h>
46#include <asm/io.h>
47#include <asm/mipsregs.h>
48#include <asm/system.h>
49#include <asm/mach-au1x00/au1000.h>
50
51au1xxx_irq_map_t au1xxx_irq_map[] = {
52
53#ifndef CONFIG_MIPS_MIRAGE
54#ifdef CONFIG_MIPS_DB1550
55 { AU1000_GPIO_3, INTC_INT_LOW_LEVEL, 0 }, /* PCMCIA Card 0 IRQ# */
56 { AU1000_GPIO_5, INTC_INT_LOW_LEVEL, 0 }, /* PCMCIA Card 1 IRQ# */
57#else
58 { AU1000_GPIO_0, INTC_INT_LOW_LEVEL, 0 }, /* PCMCIA Card 0 Fully_Interted# */
59 { AU1000_GPIO_1, INTC_INT_LOW_LEVEL, 0 }, /* PCMCIA Card 0 STSCHG# */
60 { AU1000_GPIO_2, INTC_INT_LOW_LEVEL, 0 }, /* PCMCIA Card 0 IRQ# */
61
62 { AU1000_GPIO_3, INTC_INT_LOW_LEVEL, 0 }, /* PCMCIA Card 1 Fully_Interted# */
63 { AU1000_GPIO_4, INTC_INT_LOW_LEVEL, 0 }, /* PCMCIA Card 1 STSCHG# */
64 { AU1000_GPIO_5, INTC_INT_LOW_LEVEL, 0 }, /* PCMCIA Card 1 IRQ# */
65#endif
66#else
67 { AU1000_GPIO_7, INTC_INT_RISE_EDGE, 0 }, /* touchscreen pen down */
68#endif
69
70};
71
72int au1xxx_nr_irqs = sizeof(au1xxx_irq_map)/sizeof(au1xxx_irq_map_t);
diff --git a/arch/mips/au1000/db1x00/mirage_ts.c b/arch/mips/au1000/db1x00/mirage_ts.c
new file mode 100644
index 000000000000..ade35e432004
--- /dev/null
+++ b/arch/mips/au1000/db1x00/mirage_ts.c
@@ -0,0 +1,261 @@
1/*
2 * linux/arch/mips/au1000/db1x00/mirage_ts.c
3 *
4 * BRIEF MODULE DESCRIPTION
5 * Glue between Mirage board-specific touchscreen pieces
6 * and generic Wolfson Codec touchscreen support.
7 *
8 * Based on pb1100_ts.c used in Hydrogen II.
9 *
10 * Copyright (c) 2003 Embedded Edge, LLC
11 * dan@embeddededge.com
12 *
13 * This program is free software; you can redistribute it and/or modify it
14 * under the terms of the GNU General Public License as published by the
15 * Free Software Foundation; either version 2 of the License, or (at your
16 * option) any later version.
17 *
18 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
19 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
20 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
21 * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
24 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
25 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 *
29 * You should have received a copy of the GNU General Public License along
30 * with this program; if not, write to the Free Software Foundation, Inc.,
31 * 675 Mass Ave, Cambridge, MA 02139, USA.
32 */
33
34#include <linux/config.h>
35#include <linux/types.h>
36#include <linux/module.h>
37#include <linux/sched.h>
38#include <linux/kernel.h>
39#include <linux/init.h>
40#include <linux/fs.h>
41#include <linux/poll.h>
42#include <linux/proc_fs.h>
43#include <linux/smp.h>
44#include <linux/smp_lock.h>
45#include <linux/wait.h>
46
47#include <asm/segment.h>
48#include <asm/irq.h>
49#include <asm/uaccess.h>
50#include <asm/delay.h>
51#include <asm/au1000.h>
52
53/*
54 * Imported interface to Wolfson Codec driver.
55 */
56extern void *wm97xx_ts_get_handle(int which);
57extern int wm97xx_ts_ready(void* ts_handle);
58extern void wm97xx_ts_set_cal(void* ts_handle, int xscale, int xtrans, int yscale, int ytrans);
59extern u16 wm97xx_ts_get_ac97(void* ts_handle, u8 reg);
60extern void wm97xx_ts_set_ac97(void* ts_handle, u8 reg, u16 val);
61extern int wm97xx_ts_read_data(void* ts_handle, long* x, long* y, long* pressure);
62extern void wm97xx_ts_send_data(void* ts_handle, long x, long y, long z);
63
64int wm97xx_comodule_present = 1;
65
66
67#define TS_NAME "mirage_ts"
68
69#define err(format, arg...) printk(KERN_ERR TS_NAME ": " format "\n" , ## arg)
70#define info(format, arg...) printk(KERN_INFO TS_NAME ": " format "\n" , ## arg)
71#define warn(format, arg...) printk(KERN_WARNING TS_NAME ": " format "\n" , ## arg)
72#define DPRINTK(format, arg...) printk("%s: " format "\n", __FUNCTION__ , ## arg)
73
74
75#define PEN_DOWN_IRQ AU1000_GPIO_7
76
77static struct task_struct *ts_task = 0;
78static DECLARE_COMPLETION(ts_complete);
79static DECLARE_WAIT_QUEUE_HEAD(pendown_wait);
80
81#ifdef CONFIG_WM97XX_FIVEWIRETS
82static int release_pressure = 1;
83#else
84static int release_pressure = 50;
85#endif
86
87typedef struct {
88 long x;
89 long y;
90} DOWN_EVENT;
91
92#define SAMPLE_RATE 50 /* samples per second */
93#define PEN_DEBOUNCE 5 /* samples for settling - fn of SAMPLE_RATE */
94#define PEN_UP_TIMEOUT 10 /* in seconds */
95#define PEN_UP_SETTLE 5 /* samples per second */
96
97static struct {
98 int xscale;
99 int xtrans;
100 int yscale;
101 int ytrans;
102} mirage_ts_cal =
103{
104#if 0
105 xscale: 84,
106 xtrans: -157,
107 yscale: 66,
108 ytrans: -150,
109#else
110 xscale: 84,
111 xtrans: -150,
112 yscale: 66,
113 ytrans: -146,
114#endif
115};
116
117
118static void pendown_irq(int irqnr, void *devid, struct pt_regs *regs)
119{
120//DPRINTK("got one 0x%x", au_readl(SYS_PINSTATERD));
121 wake_up(&pendown_wait);
122}
123
124static int ts_thread(void *id)
125{
126 static int pen_was_down = 0;
127 static DOWN_EVENT pen_xy;
128 long x, y, z;
129 void *ts; /* handle */
130 struct task_struct *tsk = current;
131 int timeout = HZ / SAMPLE_RATE;
132
133 ts_task = tsk;
134
135 daemonize();
136 tsk->tty = NULL;
137 tsk->policy = SCHED_FIFO;
138 tsk->rt_priority = 1;
139 strcpy(tsk->comm, "touchscreen");
140
141 /* only want to receive SIGKILL */
142 spin_lock_irq(&tsk->sigmask_lock);
143 siginitsetinv(&tsk->blocked, sigmask(SIGKILL));
144 recalc_sigpending(tsk);
145 spin_unlock_irq(&tsk->sigmask_lock);
146
147 /* get handle for codec */
148 ts = wm97xx_ts_get_handle(0);
149
150 /* proceed only after everybody is ready */
151 wait_event_timeout(pendown_wait, wm97xx_ts_ready(ts), HZ/4);
152
153 /* board-specific calibration */
154 wm97xx_ts_set_cal(ts,
155 mirage_ts_cal.xscale,
156 mirage_ts_cal.xtrans,
157 mirage_ts_cal.yscale,
158 mirage_ts_cal.ytrans);
159
160 /* route Wolfson pendown interrupts to our GPIO */
161 au_sync();
162 wm97xx_ts_set_ac97(ts, 0x4c, wm97xx_ts_get_ac97(ts, 0x4c) & ~0x0008);
163 au_sync();
164 wm97xx_ts_set_ac97(ts, 0x56, wm97xx_ts_get_ac97(ts, 0x56) & ~0x0008);
165 au_sync();
166 wm97xx_ts_set_ac97(ts, 0x52, wm97xx_ts_get_ac97(ts, 0x52) | 0x2008);
167 au_sync();
168
169 for (;;) {
170 interruptible_sleep_on_timeout(&pendown_wait, timeout);
171 disable_irq(PEN_DOWN_IRQ);
172 if (signal_pending(tsk)) {
173 break;
174 }
175
176 /* read codec */
177 if (!wm97xx_ts_read_data(ts, &x, &y, &z))
178 z = 0; /* treat no-data and pen-up the same */
179
180 if (signal_pending(tsk)) {
181 break;
182 }
183
184 if (z >= release_pressure) {
185 y = ~y; /* top to bottom */
186 if (pen_was_down > 1 /*&& pen_was_down < PEN_DEBOUNCE*/) {//THXXX
187 /* bounce ? */
188 x = pen_xy.x;
189 y = pen_xy.y;
190 --pen_was_down;
191 } else if (pen_was_down <= 1) {
192 pen_xy.x = x;
193 pen_xy.y = y;
194 if (pen_was_down)
195 wm97xx_ts_send_data(ts, x, y, z);
196 pen_was_down = PEN_DEBOUNCE;
197 }
198 //wm97xx_ts_send_data(ts, x, y, z);
199 timeout = HZ / SAMPLE_RATE;
200 } else {
201 if (pen_was_down) {
202 if (--pen_was_down)
203 z = release_pressure;
204 else //THXXX
205 wm97xx_ts_send_data(ts, pen_xy.x, pen_xy.y, z);
206 }
207 /* The pendown signal takes some time to settle after
208 * reading the pen pressure so wait a little
209 * before enabling the pen.
210 */
211 if (! pen_was_down) {
212// interruptible_sleep_on_timeout(&pendown_wait, HZ / PEN_UP_SETTLE);
213 timeout = HZ * PEN_UP_TIMEOUT;
214 }
215 }
216 enable_irq(PEN_DOWN_IRQ);
217 }
218 enable_irq(PEN_DOWN_IRQ);
219 ts_task = NULL;
220 complete(&ts_complete);
221 return 0;
222}
223
224static int __init ts_mirage_init(void)
225{
226 int ret;
227
228 /* pen down signal is connected to GPIO 7 */
229
230 ret = request_irq(PEN_DOWN_IRQ, pendown_irq, 0, "ts-pendown", NULL);
231 if (ret) {
232 err("unable to get pendown irq%d: [%d]", PEN_DOWN_IRQ, ret);
233 return ret;
234 }
235
236 lock_kernel();
237 ret = kernel_thread(ts_thread, NULL, CLONE_FS | CLONE_FILES);
238 if (ret < 0) {
239 unlock_kernel();
240 return ret;
241 }
242 unlock_kernel();
243
244 info("Mirage touchscreen IRQ initialized.");
245
246 return 0;
247}
248
249static void __exit ts_mirage_exit(void)
250{
251 if (ts_task) {
252 send_sig(SIGKILL, ts_task, 1);
253 wait_for_completion(&ts_complete);
254 }
255
256 free_irq(PEN_DOWN_IRQ, NULL);
257}
258
259module_init(ts_mirage_init);
260module_exit(ts_mirage_exit);
261
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