2 * Copyright (C) 2015 Freescale Semiconductor, Inc. All rights reserved.
4 * Authors: Zhao Qiang <qiang.zhao@nxp.com>
7 * QE TDM API Set - TDM specific routines implementations.
9 * This program is free software; you can redistribute it and/or modify it
10 * under the terms of the GNU General Public License as published by the
11 * Free Software Foundation; either version 2 of the License, or (at your
12 * option) any later version.
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>
21 static int set_tdm_framer(const char *tdm_framer_type)
23 if (strcmp(tdm_framer_type, "e1") == 0)
25 else if (strcmp(tdm_framer_type, "t1") == 0)
31 static void set_si_param(struct ucc_tdm *utdm, struct ucc_tdm_info *ut_info)
33 struct si_mode_info *si_info = &ut_info->si_info;
35 if (utdm->tdm_mode == TDM_INTERNAL_LOOPBACK) {
36 si_info->simr_crt = 1;
37 si_info->simr_rfsd = 0;
41 int ucc_of_parse_tdm(struct device_node *np, struct ucc_tdm *utdm,
42 struct ucc_tdm_info *ut_info)
48 struct device_node *np2;
49 static int siram_init_flag;
50 struct platform_device *pdev;
52 sprop = of_get_property(np, "fsl,rx-sync-clock", NULL);
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");
61 pr_err("QE-TDM: Invalid rx-sync-clock property\n");
65 sprop = of_get_property(np, "fsl,tx-sync-clock", NULL);
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");
74 pr_err("QE-TDM: Invalid tx-sync-clock property\n");
78 ret = of_property_read_u32_index(np, "fsl,tx-timeslot-mask", 0, &val);
80 pr_err("QE-TDM: Invalid tx-timeslot-mask property\n");
83 utdm->tx_ts_mask = val;
85 ret = of_property_read_u32_index(np, "fsl,rx-timeslot-mask", 0, &val);
88 pr_err("QE-TDM: Invalid rx-timeslot-mask property\n");
91 utdm->rx_ts_mask = val;
93 ret = of_property_read_u32_index(np, "fsl,tdm-id", 0, &val);
96 pr_err("QE-TDM: No fsl,tdm-id property for this UCC\n");
100 ut_info->uf_info.tdm_num = utdm->tdm_port;
102 if (of_property_read_bool(np, "fsl,tdm-internal-loopback"))
103 utdm->tdm_mode = TDM_INTERNAL_LOOPBACK;
105 utdm->tdm_mode = TDM_NORMAL;
107 sprop = of_get_property(np, "fsl,tdm-framer-type", NULL);
110 pr_err("QE-TDM: No tdm-framer-type property for UCC\n");
113 ret = set_tdm_framer(sprop);
116 utdm->tdm_framer_type = ret;
118 ret = of_property_read_u32_index(np, "fsl,siram-entry-id", 0, &val);
121 pr_err("QE-TDM: No siram entry id for UCC\n");
124 utdm->siram_entry_id = val;
126 set_si_param(utdm, ut_info);
128 np2 = of_find_compatible_node(NULL, NULL, "fsl,t1040-qe-si");
132 pdev = of_find_device_by_node(np2);
134 pr_err("%s: failed to lookup pdev\n", np2->name);
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;
147 np2 = of_find_compatible_node(NULL, NULL, "fsl,t1040-qe-siram");
150 goto err_miss_siram_property;
153 pdev = of_find_device_by_node(np2);
156 pr_err("%s: failed to lookup pdev\n", np2->name);
158 goto err_miss_siram_property;
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;
169 if (siram_init_flag == 0) {
170 memset_io(utdm->siram, 0, resource_size(res));
176 err_miss_siram_property:
177 devm_iounmap(&pdev->dev, utdm->si_regs);
181 void ucc_tdm_init(struct ucc_tdm *utdm, struct ucc_tdm_info *ut_info)
183 struct si1 __iomem *si_regs;
185 u16 siram_entry_valid;
186 u16 siram_entry_closed;
195 si_regs = utdm->si_regs;
197 ucc_num = ut_info->uf_info.ucc_num;
198 tdm_port = utdm->tdm_port;
199 siram_entry_id = utdm->siram_entry_id;
201 if (utdm->tdm_framer_type == TDM_FRAMER_T1)
202 utdm->num_of_ts = 24;
203 if (utdm->tdm_framer_type == TDM_FRAMER_E1)
204 utdm->num_of_ts = 32;
206 /* set siram table */
207 csel = (ucc_num < 4) ? ucc_num + 9 : ucc_num - 3;
209 siram_entry_valid = SIR_CSEL(csel) | SIR_BYTE | SIR_CNT(0);
210 siram_entry_closed = SIR_IDLE | SIR_BYTE | SIR_CNT(0);
212 for (i = 0; i < utdm->num_of_ts; i++) {
215 if (utdm->tx_ts_mask & mask)
216 iowrite16be(siram_entry_valid,
217 &siram[siram_entry_id * 32 + i]);
219 iowrite16be(siram_entry_closed,
220 &siram[siram_entry_id * 32 + i]);
222 if (utdm->rx_ts_mask & mask)
223 iowrite16be(siram_entry_valid,
224 &siram[siram_entry_id * 32 + 0x200 + i]);
226 iowrite16be(siram_entry_closed,
227 &siram[siram_entry_id * 32 + 0x200 + i]);
230 setbits16(&siram[(siram_entry_id * 32) + (utdm->num_of_ts - 1)],
232 setbits16(&siram[(siram_entry_id * 32) + 0x200 + (utdm->num_of_ts - 1)],
235 /* Set SIxMR register */
236 sixmr = SIMR_SAD(siram_entry_id);
238 sixmr &= ~SIMR_SDM_MASK;
240 if (utdm->tdm_mode == TDM_INTERNAL_LOOPBACK)
241 sixmr |= SIMR_SDM_INTERNAL_LOOPBACK;
243 sixmr |= SIMR_SDM_NORMAL;
245 sixmr |= SIMR_RFSD(ut_info->si_info.simr_rfsd) |
246 SIMR_TFSD(ut_info->si_info.simr_tfsd);
248 if (ut_info->si_info.simr_crt)
250 if (ut_info->si_info.simr_sl)
252 if (ut_info->si_info.simr_ce)
254 if (ut_info->si_info.simr_fe)
256 if (ut_info->si_info.simr_gm)
261 iowrite16be(sixmr, &si_regs->sixmr1[0]);
264 iowrite16be(sixmr, &si_regs->sixmr1[1]);
267 iowrite16be(sixmr, &si_regs->sixmr1[2]);
270 iowrite16be(sixmr, &si_regs->sixmr1[3]);
273 pr_err("QE-TDM: can not find tdm sixmr reg\n");