]>
Commit | Line | Data |
---|---|---|
2874c5fd | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
35ef1c20 ZQ |
2 | /* |
3 | * Copyright (C) 2015 Freescale Semiconductor, Inc. All rights reserved. | |
4 | * | |
5 | * Authors: Zhao Qiang <qiang.zhao@nxp.com> | |
6 | * | |
7 | * Description: | |
8 | * QE TDM API Set - TDM specific routines implementations. | |
35ef1c20 ZQ |
9 | */ |
10 | #include <linux/io.h> | |
11 | #include <linux/kernel.h> | |
12 | #include <linux/of_address.h> | |
13 | #include <linux/of_irq.h> | |
14 | #include <linux/of_platform.h> | |
15 | #include <soc/fsl/qe/qe_tdm.h> | |
16 | ||
17 | static int set_tdm_framer(const char *tdm_framer_type) | |
18 | { | |
19 | if (strcmp(tdm_framer_type, "e1") == 0) | |
20 | return TDM_FRAMER_E1; | |
21 | else if (strcmp(tdm_framer_type, "t1") == 0) | |
22 | return TDM_FRAMER_T1; | |
23 | else | |
24 | return -EINVAL; | |
25 | } | |
26 | ||
27 | static void set_si_param(struct ucc_tdm *utdm, struct ucc_tdm_info *ut_info) | |
28 | { | |
29 | struct si_mode_info *si_info = &ut_info->si_info; | |
30 | ||
31 | if (utdm->tdm_mode == TDM_INTERNAL_LOOPBACK) { | |
32 | si_info->simr_crt = 1; | |
33 | si_info->simr_rfsd = 0; | |
34 | } | |
35 | } | |
36 | ||
37 | int ucc_of_parse_tdm(struct device_node *np, struct ucc_tdm *utdm, | |
38 | struct ucc_tdm_info *ut_info) | |
39 | { | |
40 | const char *sprop; | |
41 | int ret = 0; | |
42 | u32 val; | |
35ef1c20 ZQ |
43 | |
44 | sprop = of_get_property(np, "fsl,rx-sync-clock", NULL); | |
45 | if (sprop) { | |
46 | ut_info->uf_info.rx_sync = qe_clock_source(sprop); | |
47 | if ((ut_info->uf_info.rx_sync < QE_CLK_NONE) || | |
48 | (ut_info->uf_info.rx_sync > QE_RSYNC_PIN)) { | |
49 | pr_err("QE-TDM: Invalid rx-sync-clock property\n"); | |
50 | return -EINVAL; | |
51 | } | |
52 | } else { | |
53 | pr_err("QE-TDM: Invalid rx-sync-clock property\n"); | |
54 | return -EINVAL; | |
55 | } | |
56 | ||
57 | sprop = of_get_property(np, "fsl,tx-sync-clock", NULL); | |
58 | if (sprop) { | |
59 | ut_info->uf_info.tx_sync = qe_clock_source(sprop); | |
60 | if ((ut_info->uf_info.tx_sync < QE_CLK_NONE) || | |
61 | (ut_info->uf_info.tx_sync > QE_TSYNC_PIN)) { | |
62 | pr_err("QE-TDM: Invalid tx-sync-clock property\n"); | |
63 | return -EINVAL; | |
64 | } | |
65 | } else { | |
66 | pr_err("QE-TDM: Invalid tx-sync-clock property\n"); | |
67 | return -EINVAL; | |
68 | } | |
69 | ||
70 | ret = of_property_read_u32_index(np, "fsl,tx-timeslot-mask", 0, &val); | |
71 | if (ret) { | |
72 | pr_err("QE-TDM: Invalid tx-timeslot-mask property\n"); | |
73 | return -EINVAL; | |
74 | } | |
75 | utdm->tx_ts_mask = val; | |
76 | ||
77 | ret = of_property_read_u32_index(np, "fsl,rx-timeslot-mask", 0, &val); | |
78 | if (ret) { | |
79 | ret = -EINVAL; | |
80 | pr_err("QE-TDM: Invalid rx-timeslot-mask property\n"); | |
81 | return ret; | |
82 | } | |
83 | utdm->rx_ts_mask = val; | |
84 | ||
85 | ret = of_property_read_u32_index(np, "fsl,tdm-id", 0, &val); | |
86 | if (ret) { | |
87 | ret = -EINVAL; | |
88 | pr_err("QE-TDM: No fsl,tdm-id property for this UCC\n"); | |
89 | return ret; | |
90 | } | |
91 | utdm->tdm_port = val; | |
92 | ut_info->uf_info.tdm_num = utdm->tdm_port; | |
93 | ||
74c269f6 | 94 | if (of_property_read_bool(np, "fsl,tdm-internal-loopback")) |
35ef1c20 ZQ |
95 | utdm->tdm_mode = TDM_INTERNAL_LOOPBACK; |
96 | else | |
97 | utdm->tdm_mode = TDM_NORMAL; | |
98 | ||
99 | sprop = of_get_property(np, "fsl,tdm-framer-type", NULL); | |
100 | if (!sprop) { | |
101 | ret = -EINVAL; | |
102 | pr_err("QE-TDM: No tdm-framer-type property for UCC\n"); | |
103 | return ret; | |
104 | } | |
105 | ret = set_tdm_framer(sprop); | |
106 | if (ret < 0) | |
107 | return -EINVAL; | |
108 | utdm->tdm_framer_type = ret; | |
109 | ||
110 | ret = of_property_read_u32_index(np, "fsl,siram-entry-id", 0, &val); | |
111 | if (ret) { | |
112 | ret = -EINVAL; | |
113 | pr_err("QE-TDM: No siram entry id for UCC\n"); | |
114 | return ret; | |
115 | } | |
116 | utdm->siram_entry_id = val; | |
117 | ||
118 | set_si_param(utdm, ut_info); | |
35ef1c20 ZQ |
119 | return ret; |
120 | } | |
4ba25162 | 121 | EXPORT_SYMBOL(ucc_of_parse_tdm); |
35ef1c20 ZQ |
122 | |
123 | void ucc_tdm_init(struct ucc_tdm *utdm, struct ucc_tdm_info *ut_info) | |
124 | { | |
125 | struct si1 __iomem *si_regs; | |
126 | u16 __iomem *siram; | |
127 | u16 siram_entry_valid; | |
128 | u16 siram_entry_closed; | |
129 | u16 ucc_num; | |
130 | u8 csel; | |
131 | u16 sixmr; | |
132 | u16 tdm_port; | |
133 | u32 siram_entry_id; | |
134 | u32 mask; | |
135 | int i; | |
136 | ||
137 | si_regs = utdm->si_regs; | |
138 | siram = utdm->siram; | |
139 | ucc_num = ut_info->uf_info.ucc_num; | |
140 | tdm_port = utdm->tdm_port; | |
141 | siram_entry_id = utdm->siram_entry_id; | |
142 | ||
143 | if (utdm->tdm_framer_type == TDM_FRAMER_T1) | |
144 | utdm->num_of_ts = 24; | |
145 | if (utdm->tdm_framer_type == TDM_FRAMER_E1) | |
146 | utdm->num_of_ts = 32; | |
147 | ||
148 | /* set siram table */ | |
149 | csel = (ucc_num < 4) ? ucc_num + 9 : ucc_num - 3; | |
150 | ||
151 | siram_entry_valid = SIR_CSEL(csel) | SIR_BYTE | SIR_CNT(0); | |
152 | siram_entry_closed = SIR_IDLE | SIR_BYTE | SIR_CNT(0); | |
153 | ||
154 | for (i = 0; i < utdm->num_of_ts; i++) { | |
155 | mask = 0x01 << i; | |
156 | ||
157 | if (utdm->tx_ts_mask & mask) | |
158 | iowrite16be(siram_entry_valid, | |
159 | &siram[siram_entry_id * 32 + i]); | |
160 | else | |
161 | iowrite16be(siram_entry_closed, | |
162 | &siram[siram_entry_id * 32 + i]); | |
163 | ||
164 | if (utdm->rx_ts_mask & mask) | |
165 | iowrite16be(siram_entry_valid, | |
166 | &siram[siram_entry_id * 32 + 0x200 + i]); | |
167 | else | |
168 | iowrite16be(siram_entry_closed, | |
169 | &siram[siram_entry_id * 32 + 0x200 + i]); | |
170 | } | |
171 | ||
172 | setbits16(&siram[(siram_entry_id * 32) + (utdm->num_of_ts - 1)], | |
173 | SIR_LAST); | |
174 | setbits16(&siram[(siram_entry_id * 32) + 0x200 + (utdm->num_of_ts - 1)], | |
175 | SIR_LAST); | |
176 | ||
177 | /* Set SIxMR register */ | |
178 | sixmr = SIMR_SAD(siram_entry_id); | |
179 | ||
180 | sixmr &= ~SIMR_SDM_MASK; | |
181 | ||
182 | if (utdm->tdm_mode == TDM_INTERNAL_LOOPBACK) | |
183 | sixmr |= SIMR_SDM_INTERNAL_LOOPBACK; | |
184 | else | |
185 | sixmr |= SIMR_SDM_NORMAL; | |
186 | ||
187 | sixmr |= SIMR_RFSD(ut_info->si_info.simr_rfsd) | | |
188 | SIMR_TFSD(ut_info->si_info.simr_tfsd); | |
189 | ||
190 | if (ut_info->si_info.simr_crt) | |
191 | sixmr |= SIMR_CRT; | |
192 | if (ut_info->si_info.simr_sl) | |
193 | sixmr |= SIMR_SL; | |
194 | if (ut_info->si_info.simr_ce) | |
195 | sixmr |= SIMR_CE; | |
196 | if (ut_info->si_info.simr_fe) | |
197 | sixmr |= SIMR_FE; | |
198 | if (ut_info->si_info.simr_gm) | |
199 | sixmr |= SIMR_GM; | |
200 | ||
201 | switch (tdm_port) { | |
202 | case 0: | |
203 | iowrite16be(sixmr, &si_regs->sixmr1[0]); | |
204 | break; | |
205 | case 1: | |
206 | iowrite16be(sixmr, &si_regs->sixmr1[1]); | |
207 | break; | |
208 | case 2: | |
209 | iowrite16be(sixmr, &si_regs->sixmr1[2]); | |
210 | break; | |
211 | case 3: | |
212 | iowrite16be(sixmr, &si_regs->sixmr1[3]); | |
213 | break; | |
214 | default: | |
215 | pr_err("QE-TDM: can not find tdm sixmr reg\n"); | |
216 | break; | |
217 | } | |
218 | } | |
4ba25162 | 219 | EXPORT_SYMBOL(ucc_tdm_init); |