1
2
3
4
5
6
7
8
9
10
11
12
13
14#include <linux/io.h>
15#include <linux/kernel.h>
16#include <linux/of_address.h>
17#include <linux/of_irq.h>
18#include <linux/of_platform.h>
19#include <soc/fsl/qe/qe_tdm.h>
20
21static int set_tdm_framer(const char *tdm_framer_type)
22{
23 if (strcmp(tdm_framer_type, "e1") == 0)
24 return TDM_FRAMER_E1;
25 else if (strcmp(tdm_framer_type, "t1") == 0)
26 return TDM_FRAMER_T1;
27 else
28 return -EINVAL;
29}
30
31static void set_si_param(struct ucc_tdm *utdm, struct ucc_tdm_info *ut_info)
32{
33 struct si_mode_info *si_info = &ut_info->si_info;
34
35 if (utdm->tdm_mode == TDM_INTERNAL_LOOPBACK) {
36 si_info->simr_crt = 1;
37 si_info->simr_rfsd = 0;
38 }
39}
40
41int ucc_of_parse_tdm(struct device_node *np, struct ucc_tdm *utdm,
42 struct ucc_tdm_info *ut_info)
43{
44 const char *sprop;
45 int ret = 0;
46 u32 val;
47 struct resource *res;
48 struct device_node *np2;
49 static int siram_init_flag;
50 struct platform_device *pdev;
51
52 sprop = of_get_property(np, "fsl,rx-sync-clock", NULL);
53 if (sprop) {
54 ut_info->uf_info.rx_sync = qe_clock_source(sprop);
55 if ((ut_info->uf_info.rx_sync < QE_CLK_NONE) ||
56 (ut_info->uf_info.rx_sync > QE_RSYNC_PIN)) {
57 pr_err("QE-TDM: Invalid rx-sync-clock property\n");
58 return -EINVAL;
59 }
60 } else {
61 pr_err("QE-TDM: Invalid rx-sync-clock property\n");
62 return -EINVAL;
63 }
64
65 sprop = of_get_property(np, "fsl,tx-sync-clock", NULL);
66 if (sprop) {
67 ut_info->uf_info.tx_sync = qe_clock_source(sprop);
68 if ((ut_info->uf_info.tx_sync < QE_CLK_NONE) ||
69 (ut_info->uf_info.tx_sync > QE_TSYNC_PIN)) {
70 pr_err("QE-TDM: Invalid tx-sync-clock property\n");
71 return -EINVAL;
72 }
73 } else {
74 pr_err("QE-TDM: Invalid tx-sync-clock property\n");
75 return -EINVAL;
76 }
77
78 ret = of_property_read_u32_index(np, "fsl,tx-timeslot-mask", 0, &val);
79 if (ret) {
80 pr_err("QE-TDM: Invalid tx-timeslot-mask property\n");
81 return -EINVAL;
82 }
83 utdm->tx_ts_mask = val;
84
85 ret = of_property_read_u32_index(np, "fsl,rx-timeslot-mask", 0, &val);
86 if (ret) {
87 ret = -EINVAL;
88 pr_err("QE-TDM: Invalid rx-timeslot-mask property\n");
89 return ret;
90 }
91 utdm->rx_ts_mask = val;
92
93 ret = of_property_read_u32_index(np, "fsl,tdm-id", 0, &val);
94 if (ret) {
95 ret = -EINVAL;
96 pr_err("QE-TDM: No fsl,tdm-id property for this UCC\n");
97 return ret;
98 }
99 utdm->tdm_port = val;
100 ut_info->uf_info.tdm_num = utdm->tdm_port;
101
102 if (of_property_read_bool(np, "fsl,tdm-internal-loopback"))
103 utdm->tdm_mode = TDM_INTERNAL_LOOPBACK;
104 else
105 utdm->tdm_mode = TDM_NORMAL;
106
107 sprop = of_get_property(np, "fsl,tdm-framer-type", NULL);
108 if (!sprop) {
109 ret = -EINVAL;
110 pr_err("QE-TDM: No tdm-framer-type property for UCC\n");
111 return ret;
112 }
113 ret = set_tdm_framer(sprop);
114 if (ret < 0)
115 return -EINVAL;
116 utdm->tdm_framer_type = ret;
117
118 ret = of_property_read_u32_index(np, "fsl,siram-entry-id", 0, &val);
119 if (ret) {
120 ret = -EINVAL;
121 pr_err("QE-TDM: No siram entry id for UCC\n");
122 return ret;
123 }
124 utdm->siram_entry_id = val;
125
126 set_si_param(utdm, ut_info);
127
128 np2 = of_find_compatible_node(NULL, NULL, "fsl,t1040-qe-si");
129 if (!np2)
130 return -EINVAL;
131
132 pdev = of_find_device_by_node(np2);
133 if (!pdev) {
134 pr_err("%s: failed to lookup pdev\n", np2->name);
135 of_node_put(np2);
136 return -EINVAL;
137 }
138
139 of_node_put(np2);
140 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
141 utdm->si_regs = devm_ioremap_resource(&pdev->dev, res);
142 if (IS_ERR(utdm->si_regs)) {
143 ret = PTR_ERR(utdm->si_regs);
144 goto err_miss_siram_property;
145 }
146
147 np2 = of_find_compatible_node(NULL, NULL, "fsl,t1040-qe-siram");
148 if (!np2) {
149 ret = -EINVAL;
150 goto err_miss_siram_property;
151 }
152
153 pdev = of_find_device_by_node(np2);
154 if (!pdev) {
155 ret = -EINVAL;
156 pr_err("%s: failed to lookup pdev\n", np2->name);
157 of_node_put(np2);
158 goto err_miss_siram_property;
159 }
160
161 of_node_put(np2);
162 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
163 utdm->siram = devm_ioremap_resource(&pdev->dev, res);
164 if (IS_ERR(utdm->siram)) {
165 ret = PTR_ERR(utdm->siram);
166 goto err_miss_siram_property;
167 }
168
169 if (siram_init_flag == 0) {
170 memset_io(utdm->siram, 0, resource_size(res));
171 siram_init_flag = 1;
172 }
173
174 return ret;
175
176err_miss_siram_property:
177 devm_iounmap(&pdev->dev, utdm->si_regs);
178 return ret;
179}
180EXPORT_SYMBOL(ucc_of_parse_tdm);
181
182void ucc_tdm_init(struct ucc_tdm *utdm, struct ucc_tdm_info *ut_info)
183{
184 struct si1 __iomem *si_regs;
185 u16 __iomem *siram;
186 u16 siram_entry_valid;
187 u16 siram_entry_closed;
188 u16 ucc_num;
189 u8 csel;
190 u16 sixmr;
191 u16 tdm_port;
192 u32 siram_entry_id;
193 u32 mask;
194 int i;
195
196 si_regs = utdm->si_regs;
197 siram = utdm->siram;
198 ucc_num = ut_info->uf_info.ucc_num;
199 tdm_port = utdm->tdm_port;
200 siram_entry_id = utdm->siram_entry_id;
201
202 if (utdm->tdm_framer_type == TDM_FRAMER_T1)
203 utdm->num_of_ts = 24;
204 if (utdm->tdm_framer_type == TDM_FRAMER_E1)
205 utdm->num_of_ts = 32;
206
207
208 csel = (ucc_num < 4) ? ucc_num + 9 : ucc_num - 3;
209
210 siram_entry_valid = SIR_CSEL(csel) | SIR_BYTE | SIR_CNT(0);
211 siram_entry_closed = SIR_IDLE | SIR_BYTE | SIR_CNT(0);
212
213 for (i = 0; i < utdm->num_of_ts; i++) {
214 mask = 0x01 << i;
215
216 if (utdm->tx_ts_mask & mask)
217 iowrite16be(siram_entry_valid,
218 &siram[siram_entry_id * 32 + i]);
219 else
220 iowrite16be(siram_entry_closed,
221 &siram[siram_entry_id * 32 + i]);
222
223 if (utdm->rx_ts_mask & mask)
224 iowrite16be(siram_entry_valid,
225 &siram[siram_entry_id * 32 + 0x200 + i]);
226 else
227 iowrite16be(siram_entry_closed,
228 &siram[siram_entry_id * 32 + 0x200 + i]);
229 }
230
231 setbits16(&siram[(siram_entry_id * 32) + (utdm->num_of_ts - 1)],
232 SIR_LAST);
233 setbits16(&siram[(siram_entry_id * 32) + 0x200 + (utdm->num_of_ts - 1)],
234 SIR_LAST);
235
236
237 sixmr = SIMR_SAD(siram_entry_id);
238
239 sixmr &= ~SIMR_SDM_MASK;
240
241 if (utdm->tdm_mode == TDM_INTERNAL_LOOPBACK)
242 sixmr |= SIMR_SDM_INTERNAL_LOOPBACK;
243 else
244 sixmr |= SIMR_SDM_NORMAL;
245
246 sixmr |= SIMR_RFSD(ut_info->si_info.simr_rfsd) |
247 SIMR_TFSD(ut_info->si_info.simr_tfsd);
248
249 if (ut_info->si_info.simr_crt)
250 sixmr |= SIMR_CRT;
251 if (ut_info->si_info.simr_sl)
252 sixmr |= SIMR_SL;
253 if (ut_info->si_info.simr_ce)
254 sixmr |= SIMR_CE;
255 if (ut_info->si_info.simr_fe)
256 sixmr |= SIMR_FE;
257 if (ut_info->si_info.simr_gm)
258 sixmr |= SIMR_GM;
259
260 switch (tdm_port) {
261 case 0:
262 iowrite16be(sixmr, &si_regs->sixmr1[0]);
263 break;
264 case 1:
265 iowrite16be(sixmr, &si_regs->sixmr1[1]);
266 break;
267 case 2:
268 iowrite16be(sixmr, &si_regs->sixmr1[2]);
269 break;
270 case 3:
271 iowrite16be(sixmr, &si_regs->sixmr1[3]);
272 break;
273 default:
274 pr_err("QE-TDM: can not find tdm sixmr reg\n");
275 break;
276 }
277}
278EXPORT_SYMBOL(ucc_tdm_init);
279
