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9#include <linux/slab.h>
10#include <asm/pmac_feature.h>
11#include <asm/pmac_pfunc.h>
12#include "../aoa.h"
13
14#define PMF_GPIO(name, bit) \
15static void pmf_gpio_set_##name(struct gpio_runtime *rt, int on)\
16{ \
17 struct pmf_args args = { .count = 1, .u[0].v = !on }; \
18 int rc; \
19 \
20 if (unlikely(!rt)) return; \
21 rc = pmf_call_function(rt->node, #name "-mute", &args); \
22 if (rc && rc != -ENODEV) \
23 printk(KERN_WARNING "pmf_gpio_set_" #name \
24 " failed, rc: %d\n", rc); \
25 rt->implementation_private &= ~(1<<bit); \
26 rt->implementation_private |= (!!on << bit); \
27} \
28static int pmf_gpio_get_##name(struct gpio_runtime *rt) \
29{ \
30 if (unlikely(!rt)) return 0; \
31 return (rt->implementation_private>>bit)&1; \
32}
33
34PMF_GPIO(headphone, 0);
35PMF_GPIO(amp, 1);
36PMF_GPIO(lineout, 2);
37
38static void pmf_gpio_set_hw_reset(struct gpio_runtime *rt, int on)
39{
40 struct pmf_args args = { .count = 1, .u[0].v = !!on };
41 int rc;
42
43 if (unlikely(!rt)) return;
44 rc = pmf_call_function(rt->node, "hw-reset", &args);
45 if (rc)
46 printk(KERN_WARNING "pmf_gpio_set_hw_reset"
47 " failed, rc: %d\n", rc);
48}
49
50static void pmf_gpio_all_amps_off(struct gpio_runtime *rt)
51{
52 int saved;
53
54 if (unlikely(!rt)) return;
55 saved = rt->implementation_private;
56 pmf_gpio_set_headphone(rt, 0);
57 pmf_gpio_set_amp(rt, 0);
58 pmf_gpio_set_lineout(rt, 0);
59 rt->implementation_private = saved;
60}
61
62static void pmf_gpio_all_amps_restore(struct gpio_runtime *rt)
63{
64 int s;
65
66 if (unlikely(!rt)) return;
67 s = rt->implementation_private;
68 pmf_gpio_set_headphone(rt, (s>>0)&1);
69 pmf_gpio_set_amp(rt, (s>>1)&1);
70 pmf_gpio_set_lineout(rt, (s>>2)&1);
71}
72
73static void pmf_handle_notify(struct work_struct *work)
74{
75 struct gpio_notification *notif =
76 container_of(work, struct gpio_notification, work.work);
77
78 mutex_lock(¬if->mutex);
79 if (notif->notify)
80 notif->notify(notif->data);
81 mutex_unlock(¬if->mutex);
82}
83
84static void pmf_gpio_init(struct gpio_runtime *rt)
85{
86 pmf_gpio_all_amps_off(rt);
87 rt->implementation_private = 0;
88 INIT_DELAYED_WORK(&rt->headphone_notify.work, pmf_handle_notify);
89 INIT_DELAYED_WORK(&rt->line_in_notify.work, pmf_handle_notify);
90 INIT_DELAYED_WORK(&rt->line_out_notify.work, pmf_handle_notify);
91 mutex_init(&rt->headphone_notify.mutex);
92 mutex_init(&rt->line_in_notify.mutex);
93 mutex_init(&rt->line_out_notify.mutex);
94}
95
96static void pmf_gpio_exit(struct gpio_runtime *rt)
97{
98 pmf_gpio_all_amps_off(rt);
99 rt->implementation_private = 0;
100
101 if (rt->headphone_notify.gpio_private)
102 pmf_unregister_irq_client(rt->headphone_notify.gpio_private);
103 if (rt->line_in_notify.gpio_private)
104 pmf_unregister_irq_client(rt->line_in_notify.gpio_private);
105 if (rt->line_out_notify.gpio_private)
106 pmf_unregister_irq_client(rt->line_out_notify.gpio_private);
107
108
109
110 cancel_delayed_work_sync(&rt->headphone_notify.work);
111 cancel_delayed_work_sync(&rt->line_in_notify.work);
112 cancel_delayed_work_sync(&rt->line_out_notify.work);
113
114 mutex_destroy(&rt->headphone_notify.mutex);
115 mutex_destroy(&rt->line_in_notify.mutex);
116 mutex_destroy(&rt->line_out_notify.mutex);
117
118 kfree(rt->headphone_notify.gpio_private);
119 kfree(rt->line_in_notify.gpio_private);
120 kfree(rt->line_out_notify.gpio_private);
121}
122
123static void pmf_handle_notify_irq(void *data)
124{
125 struct gpio_notification *notif = data;
126
127 schedule_delayed_work(¬if->work, 0);
128}
129
130static int pmf_set_notify(struct gpio_runtime *rt,
131 enum notify_type type,
132 notify_func_t notify,
133 void *data)
134{
135 struct gpio_notification *notif;
136 notify_func_t old;
137 struct pmf_irq_client *irq_client;
138 char *name;
139 int err = -EBUSY;
140
141 switch (type) {
142 case AOA_NOTIFY_HEADPHONE:
143 notif = &rt->headphone_notify;
144 name = "headphone-detect";
145 break;
146 case AOA_NOTIFY_LINE_IN:
147 notif = &rt->line_in_notify;
148 name = "linein-detect";
149 break;
150 case AOA_NOTIFY_LINE_OUT:
151 notif = &rt->line_out_notify;
152 name = "lineout-detect";
153 break;
154 default:
155 return -EINVAL;
156 }
157
158 mutex_lock(¬if->mutex);
159
160 old = notif->notify;
161
162 if (!old && !notify) {
163 err = 0;
164 goto out_unlock;
165 }
166
167 if (old && notify) {
168 if (old == notify && notif->data == data)
169 err = 0;
170 goto out_unlock;
171 }
172
173 if (old && !notify) {
174 irq_client = notif->gpio_private;
175 pmf_unregister_irq_client(irq_client);
176 kfree(irq_client);
177 notif->gpio_private = NULL;
178 }
179 if (!old && notify) {
180 irq_client = kzalloc(sizeof(struct pmf_irq_client),
181 GFP_KERNEL);
182 if (!irq_client) {
183 err = -ENOMEM;
184 goto out_unlock;
185 }
186 irq_client->data = notif;
187 irq_client->handler = pmf_handle_notify_irq;
188 irq_client->owner = THIS_MODULE;
189 err = pmf_register_irq_client(rt->node,
190 name,
191 irq_client);
192 if (err) {
193 printk(KERN_ERR "snd-aoa: gpio layer failed to"
194 " register %s irq (%d)\n", name, err);
195 kfree(irq_client);
196 goto out_unlock;
197 }
198 notif->gpio_private = irq_client;
199 }
200 notif->notify = notify;
201 notif->data = data;
202
203 err = 0;
204 out_unlock:
205 mutex_unlock(¬if->mutex);
206 return err;
207}
208
209static int pmf_get_detect(struct gpio_runtime *rt,
210 enum notify_type type)
211{
212 char *name;
213 int err = -EBUSY, ret;
214 struct pmf_args args = { .count = 1, .u[0].p = &ret };
215
216 switch (type) {
217 case AOA_NOTIFY_HEADPHONE:
218 name = "headphone-detect";
219 break;
220 case AOA_NOTIFY_LINE_IN:
221 name = "linein-detect";
222 break;
223 case AOA_NOTIFY_LINE_OUT:
224 name = "lineout-detect";
225 break;
226 default:
227 return -EINVAL;
228 }
229
230 err = pmf_call_function(rt->node, name, &args);
231 if (err)
232 return err;
233 return ret;
234}
235
236static struct gpio_methods methods = {
237 .init = pmf_gpio_init,
238 .exit = pmf_gpio_exit,
239 .all_amps_off = pmf_gpio_all_amps_off,
240 .all_amps_restore = pmf_gpio_all_amps_restore,
241 .set_headphone = pmf_gpio_set_headphone,
242 .set_speakers = pmf_gpio_set_amp,
243 .set_lineout = pmf_gpio_set_lineout,
244 .set_hw_reset = pmf_gpio_set_hw_reset,
245 .get_headphone = pmf_gpio_get_headphone,
246 .get_speakers = pmf_gpio_get_amp,
247 .get_lineout = pmf_gpio_get_lineout,
248 .set_notify = pmf_set_notify,
249 .get_detect = pmf_get_detect,
250};
251
252struct gpio_methods *pmf_gpio_methods = &methods;
253EXPORT_SYMBOL_GPL(pmf_gpio_methods);
254
