This source file includes following definitions.
- send_ll_cmd
- ll_device_want_to_sleep
- ll_device_want_to_wakeup
- st_ll_enable
- st_ll_disable
- st_ll_wakeup
- st_ll_getstate
- st_ll_sleep_state
- st_ll_init
- st_ll_deinit
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8
9 #define pr_fmt(fmt) "(stll) :" fmt
10 #include <linux/skbuff.h>
11 #include <linux/module.h>
12 #include <linux/platform_device.h>
13 #include <linux/ti_wilink_st.h>
14
15
16
17 static void send_ll_cmd(struct st_data_s *st_data,
18 unsigned char cmd)
19 {
20
21 pr_debug("%s: writing %x", __func__, cmd);
22 st_int_write(st_data, &cmd, 1);
23 return;
24 }
25
26 static void ll_device_want_to_sleep(struct st_data_s *st_data)
27 {
28 struct kim_data_s *kim_data;
29 struct ti_st_plat_data *pdata;
30
31 pr_debug("%s", __func__);
32
33 if (st_data->ll_state != ST_LL_AWAKE)
34 pr_err("ERR hcill: ST_LL_GO_TO_SLEEP_IND"
35 "in state %ld", st_data->ll_state);
36
37 send_ll_cmd(st_data, LL_SLEEP_ACK);
38
39 st_data->ll_state = ST_LL_ASLEEP;
40
41
42 kim_data = st_data->kim_data;
43 pdata = kim_data->kim_pdev->dev.platform_data;
44 if (pdata->chip_asleep)
45 pdata->chip_asleep(NULL);
46 }
47
48 static void ll_device_want_to_wakeup(struct st_data_s *st_data)
49 {
50 struct kim_data_s *kim_data;
51 struct ti_st_plat_data *pdata;
52
53
54 switch (st_data->ll_state) {
55 case ST_LL_ASLEEP:
56 send_ll_cmd(st_data, LL_WAKE_UP_ACK);
57 break;
58 case ST_LL_ASLEEP_TO_AWAKE:
59
60 pr_err("duplicate wake_ind while waiting for Wake ack");
61 break;
62 case ST_LL_AWAKE:
63
64 pr_err("duplicate wake_ind already AWAKE");
65 break;
66 case ST_LL_AWAKE_TO_ASLEEP:
67
68 pr_err("duplicate wake_ind");
69 break;
70 }
71
72 st_data->ll_state = ST_LL_AWAKE;
73
74
75 kim_data = st_data->kim_data;
76 pdata = kim_data->kim_pdev->dev.platform_data;
77 if (pdata->chip_awake)
78 pdata->chip_awake(NULL);
79 }
80
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83
84
85
86 void st_ll_enable(struct st_data_s *ll)
87 {
88 ll->ll_state = ST_LL_AWAKE;
89 }
90
91
92
93 void st_ll_disable(struct st_data_s *ll)
94 {
95 ll->ll_state = ST_LL_INVALID;
96 }
97
98
99 void st_ll_wakeup(struct st_data_s *ll)
100 {
101 if (likely(ll->ll_state != ST_LL_AWAKE)) {
102 send_ll_cmd(ll, LL_WAKE_UP_IND);
103 ll->ll_state = ST_LL_ASLEEP_TO_AWAKE;
104 } else {
105
106 pr_err(" Chip already AWAKE ");
107 }
108 }
109
110
111 unsigned long st_ll_getstate(struct st_data_s *ll)
112 {
113 pr_debug(" returning state %ld", ll->ll_state);
114 return ll->ll_state;
115 }
116
117
118 unsigned long st_ll_sleep_state(struct st_data_s *st_data,
119 unsigned char cmd)
120 {
121 switch (cmd) {
122 case LL_SLEEP_IND:
123 pr_debug("sleep indication recvd");
124 ll_device_want_to_sleep(st_data);
125 break;
126 case LL_SLEEP_ACK:
127 pr_err("sleep ack rcvd: host shouldn't");
128 break;
129 case LL_WAKE_UP_IND:
130 pr_debug("wake indication recvd");
131 ll_device_want_to_wakeup(st_data);
132 break;
133 case LL_WAKE_UP_ACK:
134 pr_debug("wake ack rcvd");
135 st_data->ll_state = ST_LL_AWAKE;
136 break;
137 default:
138 pr_err(" unknown input/state ");
139 return -EINVAL;
140 }
141 return 0;
142 }
143
144
145 long st_ll_init(struct st_data_s *ll)
146 {
147
148 ll->ll_state = ST_LL_INVALID;
149 return 0;
150 }
151
152
153 long st_ll_deinit(struct st_data_s *ll)
154 {
155 return 0;
156 }