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16#include <linux/linkage.h>
17#include <asm/assembler.h>
18
19#include <mach/board-ams-delta.h>
20#include <mach/ams-delta-fiq.h>
21
22#include "iomap.h"
23#include "soc.h"
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28
29#define OMAP1510_GPIO_BASE 0xFFFCE000
30#define OMAP1510_GPIO_DATA_INPUT 0x00
31#define OMAP1510_GPIO_DATA_OUTPUT 0x04
32#define OMAP1510_GPIO_DIR_CONTROL 0x08
33#define OMAP1510_GPIO_INT_CONTROL 0x0c
34#define OMAP1510_GPIO_INT_MASK 0x10
35#define OMAP1510_GPIO_INT_STATUS 0x14
36#define OMAP1510_GPIO_PIN_CONTROL 0x18
37
38
39#define KEYBRD_DATA_MASK (0x1 << AMS_DELTA_GPIO_PIN_KEYBRD_DATA)
40#define KEYBRD_CLK_MASK (0x1 << AMS_DELTA_GPIO_PIN_KEYBRD_CLK)
41#define MODEM_IRQ_MASK (0x1 << AMS_DELTA_GPIO_PIN_MODEM_IRQ)
42#define HOOK_SWITCH_MASK (0x1 << AMS_DELTA_GPIO_PIN_HOOK_SWITCH)
43#define OTHERS_MASK (MODEM_IRQ_MASK | HOOK_SWITCH_MASK)
44
45
46#define DEFERRED_FIQ_MASK OMAP_IRQ_BIT(INT_DEFERRED_FIQ)
47#define GPIO_BANK1_MASK OMAP_IRQ_BIT(INT_GPIO_BANK1)
48
49
50#define BUF_MASK (FIQ_MASK * 4)
51#define BUF_STATE (FIQ_STATE * 4)
52#define BUF_KEYS_CNT (FIQ_KEYS_CNT * 4)
53#define BUF_TAIL_OFFSET (FIQ_TAIL_OFFSET * 4)
54#define BUF_HEAD_OFFSET (FIQ_HEAD_OFFSET * 4)
55#define BUF_BUF_LEN (FIQ_BUF_LEN * 4)
56#define BUF_KEY (FIQ_KEY * 4)
57#define BUF_MISSED_KEYS (FIQ_MISSED_KEYS * 4)
58#define BUF_BUFFER_START (FIQ_BUFFER_START * 4)
59#define BUF_GPIO_INT_MASK (FIQ_GPIO_INT_MASK * 4)
60#define BUF_KEYS_HICNT (FIQ_KEYS_HICNT * 4)
61#define BUF_IRQ_PEND (FIQ_IRQ_PEND * 4)
62#define BUF_SIR_CODE_L1 (FIQ_SIR_CODE_L1 * 4)
63#define BUF_SIR_CODE_L2 (IRQ_SIR_CODE_L2 * 4)
64#define BUF_CNT_INT_00 (FIQ_CNT_INT_00 * 4)
65#define BUF_CNT_INT_KEY (FIQ_CNT_INT_KEY * 4)
66#define BUF_CNT_INT_MDM (FIQ_CNT_INT_MDM * 4)
67#define BUF_CNT_INT_03 (FIQ_CNT_INT_03 * 4)
68#define BUF_CNT_INT_HSW (FIQ_CNT_INT_HSW * 4)
69#define BUF_CNT_INT_05 (FIQ_CNT_INT_05 * 4)
70#define BUF_CNT_INT_06 (FIQ_CNT_INT_06 * 4)
71#define BUF_CNT_INT_07 (FIQ_CNT_INT_07 * 4)
72#define BUF_CNT_INT_08 (FIQ_CNT_INT_08 * 4)
73#define BUF_CNT_INT_09 (FIQ_CNT_INT_09 * 4)
74#define BUF_CNT_INT_10 (FIQ_CNT_INT_10 * 4)
75#define BUF_CNT_INT_11 (FIQ_CNT_INT_11 * 4)
76#define BUF_CNT_INT_12 (FIQ_CNT_INT_12 * 4)
77#define BUF_CNT_INT_13 (FIQ_CNT_INT_13 * 4)
78#define BUF_CNT_INT_14 (FIQ_CNT_INT_14 * 4)
79#define BUF_CNT_INT_15 (FIQ_CNT_INT_15 * 4)
80#define BUF_CIRC_BUFF (FIQ_CIRC_BUFF * 4)
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93 .text
94
95 .global qwerty_fiqin_end
96
97ENTRY(qwerty_fiqin_start)
98 @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
99 @ FIQ intrrupt handler
100 ldr r12, omap_ih1_base @ set pointer to level1 handler
101
102 ldr r11, [r12,
103
104 ldr r13, [r12,
105 bics r13, r13, r11 @ clear masked - any left?
106 beq exit @ none - spurious FIQ? exit
107
108 ldr r10, [r12,
109
110 mov r8,
111 str r8, [r12,
112
113 cmp r10,
114 beq gpio @ yes - process it
115
116 mov r8,
117 orr r8, r11, r8, lsl r10 @ mask spurious interrupt
118 str r8, [r12,
119exit:
120 subs pc, lr,
121 @@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
122
123
124 @@@@@@@@@@@@@@@@@@@@@@@@@@@
125gpio: @ GPIO bank interrupt handler
126 ldr r12, omap1510_gpio_base @ set base pointer to GPIO bank
127
128 ldr r11, [r12,
129restart:
130 ldr r13, [r12,
131 bics r13, r13, r11 @ clear masked - any left?
132 beq exit @ no - spurious interrupt? exit
133
134 orr r11, r11, r13 @ mask all requested interrupts
135 str r11, [r12,
136
137 ands r10, r13,
138 beq hksw @ no - try next source
139
140
141 @@@@@@@@@@@@@@@@@@@@@@
142 @ Keyboard clock FIQ mode interrupt handler
143 @ r10 now contains KEYBRD_CLK_MASK, use it
144 str r10, [r12,
145 bic r11, r11, r10 @ unmask it
146 str r11, [r12,
147
148 @ Process keyboard data
149 ldr r8, [r12,
150
151 ldr r10, [r9,
152 cmp r10,
153 bne data @ no - go to data processing
154
155 ands r8, r8,
156 beq hksw @ no - try next source
157
158 @ r8 contains KEYBRD_DATA_MASK, use it
159 str r8, [r9,
160 @ r10 already contains 0, reuse it
161 str r10, [r9,
162 mov r10,
163 str r10, [r9,
164
165 @ Mask other GPIO line interrupts till key done
166 str r11, [r9,
167 mvn r11,
168 str r11, [r12,
169
170 b restart @ restart
171
172data: ldr r10, [r9,
173
174 @ r8 still contains GPIO input bits
175 ands r8, r8,
176 ldreq r8, [r9,
177 orreq r8, r8, r10 @ set 1 at current mask position
178 streq r8, [r9,
179
180 mov r10, r10, lsl
181 bics r10, r10,
182 strne r10, [r9,
183 bne restart @ and restart
184
185 @ r10 already contains 0, reuse it
186 str r10, [r9,
187
188 @ Key done - restore interrupt mask
189 ldr r10, [r9,
190 and r11, r11, r10 @ unmask all saved as unmasked
191 str r11, [r12,
192
193 @ Try appending the keycode to the circular buffer
194 ldr r10, [r9,
195 ldr r8, [r9,
196 cmp r10, r8 @ is buffer full?
197 beq hksw @ yes - key lost, next source
198
199 add r10, r10,
200 str r10, [r9,
201
202 ldr r10, [r9,
203 @ r8 already contains buffer size
204 cmp r10, r8 @ end of buffer?
205 moveq r10,
206
207 ldr r12, [r9,
208 add r12, r12, r10, LSL
209 ldr r8, [r9,
210 str r8, [r12] @ append it to the buffer tail
211
212 add r10, r10,
213 str r10, [r9,
214
215 ldr r10, [r9,
216 add r10, r10,
217 str r10, [r9,
218 @@@@@@@@@@@@@@@@@@@@@@@@
219
220
221hksw: @Is hook switch interrupt requested?
222 tst r13,
223 beq mdm @ no - try next source
224
225
226 @@@@@@@@@@@@@@@@@@@@@@@@
227 @ Hook switch interrupt FIQ mode simple handler
228
229 @ Don't toggle active edge, the switch always bounces
230
231 @ Increment hook switch interrupt counter
232 ldr r10, [r9,
233 add r10, r10,
234 str r10, [r9,
235 @@@@@@@@@@@@@@@@@@@@@@@@
236
237
238mdm: @Is it a modem interrupt?
239 tst r13,
240 beq irq @ no - check for next interrupt
241
242
243 @@@@@@@@@@@@@@@@@@@@@@@@
244 @ Modem FIQ mode interrupt handler stub
245
246 @ Increment modem interrupt counter
247 ldr r10, [r9,
248 add r10, r10,
249 str r10, [r9,
250 @@@@@@@@@@@@@@@@@@@@@@@@
251
252
253irq: @ Place deferred_fiq interrupt request
254 ldr r12, deferred_fiq_ih_base @ set pointer to IRQ handler
255 mov r10,
256 str r10, [r12,
257
258 ldr r12, omap1510_gpio_base @ set pointer back to GPIO bank
259 b restart @ check for next GPIO interrupt
260 @@@@@@@@@@@@@@@@@@@@@@@@@@@
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266omap_ih1_base:
267 .word OMAP1_IO_ADDRESS(OMAP_IH1_BASE)
268deferred_fiq_ih_base:
269 .word OMAP1_IO_ADDRESS(DEFERRED_FIQ_IH_BASE)
270omap1510_gpio_base:
271 .word OMAP1_IO_ADDRESS(OMAP1510_GPIO_BASE)
272qwerty_fiqin_end:
273
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276
277
278.if (qwerty_fiqin_end - qwerty_fiqin_start) > (0x200 - 0x1c)
279 .err
280.endif
281