279 lines
6.8 KiB
C
279 lines
6.8 KiB
C
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/*
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* Copyright (C) 2015 Freescale Semiconductor, Inc. All rights reserved.
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*
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* Authors: Zhao Qiang <qiang.zhao@nxp.com>
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*
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* Description:
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* QE TDM API Set - TDM specific routines implementations.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*/
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#include <linux/io.h>
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#include <linux/kernel.h>
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#include <linux/of_address.h>
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#include <linux/of_irq.h>
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#include <linux/of_platform.h>
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#include <soc/fsl/qe/qe_tdm.h>
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static int set_tdm_framer(const char *tdm_framer_type)
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{
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if (strcmp(tdm_framer_type, "e1") == 0)
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return TDM_FRAMER_E1;
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else if (strcmp(tdm_framer_type, "t1") == 0)
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return TDM_FRAMER_T1;
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else
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return -EINVAL;
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}
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static void set_si_param(struct ucc_tdm *utdm, struct ucc_tdm_info *ut_info)
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{
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struct si_mode_info *si_info = &ut_info->si_info;
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if (utdm->tdm_mode == TDM_INTERNAL_LOOPBACK) {
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si_info->simr_crt = 1;
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si_info->simr_rfsd = 0;
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}
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}
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int ucc_of_parse_tdm(struct device_node *np, struct ucc_tdm *utdm,
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struct ucc_tdm_info *ut_info)
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{
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const char *sprop;
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int ret = 0;
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u32 val;
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struct resource *res;
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struct device_node *np2;
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static int siram_init_flag;
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struct platform_device *pdev;
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sprop = of_get_property(np, "fsl,rx-sync-clock", NULL);
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if (sprop) {
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ut_info->uf_info.rx_sync = qe_clock_source(sprop);
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if ((ut_info->uf_info.rx_sync < QE_CLK_NONE) ||
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(ut_info->uf_info.rx_sync > QE_RSYNC_PIN)) {
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pr_err("QE-TDM: Invalid rx-sync-clock property\n");
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return -EINVAL;
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}
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} else {
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pr_err("QE-TDM: Invalid rx-sync-clock property\n");
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return -EINVAL;
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}
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sprop = of_get_property(np, "fsl,tx-sync-clock", NULL);
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if (sprop) {
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ut_info->uf_info.tx_sync = qe_clock_source(sprop);
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if ((ut_info->uf_info.tx_sync < QE_CLK_NONE) ||
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(ut_info->uf_info.tx_sync > QE_TSYNC_PIN)) {
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pr_err("QE-TDM: Invalid tx-sync-clock property\n");
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return -EINVAL;
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}
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} else {
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pr_err("QE-TDM: Invalid tx-sync-clock property\n");
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return -EINVAL;
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}
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ret = of_property_read_u32_index(np, "fsl,tx-timeslot-mask", 0, &val);
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if (ret) {
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pr_err("QE-TDM: Invalid tx-timeslot-mask property\n");
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return -EINVAL;
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}
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utdm->tx_ts_mask = val;
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ret = of_property_read_u32_index(np, "fsl,rx-timeslot-mask", 0, &val);
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if (ret) {
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ret = -EINVAL;
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pr_err("QE-TDM: Invalid rx-timeslot-mask property\n");
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return ret;
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}
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utdm->rx_ts_mask = val;
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ret = of_property_read_u32_index(np, "fsl,tdm-id", 0, &val);
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if (ret) {
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ret = -EINVAL;
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pr_err("QE-TDM: No fsl,tdm-id property for this UCC\n");
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return ret;
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}
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utdm->tdm_port = val;
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ut_info->uf_info.tdm_num = utdm->tdm_port;
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if (of_property_read_bool(np, "fsl,tdm-internal-loopback"))
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utdm->tdm_mode = TDM_INTERNAL_LOOPBACK;
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else
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utdm->tdm_mode = TDM_NORMAL;
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sprop = of_get_property(np, "fsl,tdm-framer-type", NULL);
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if (!sprop) {
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ret = -EINVAL;
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pr_err("QE-TDM: No tdm-framer-type property for UCC\n");
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return ret;
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}
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ret = set_tdm_framer(sprop);
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if (ret < 0)
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return -EINVAL;
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utdm->tdm_framer_type = ret;
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ret = of_property_read_u32_index(np, "fsl,siram-entry-id", 0, &val);
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if (ret) {
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ret = -EINVAL;
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pr_err("QE-TDM: No siram entry id for UCC\n");
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return ret;
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}
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utdm->siram_entry_id = val;
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set_si_param(utdm, ut_info);
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np2 = of_find_compatible_node(NULL, NULL, "fsl,t1040-qe-si");
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if (!np2)
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return -EINVAL;
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pdev = of_find_device_by_node(np2);
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if (!pdev) {
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pr_err("%s: failed to lookup pdev\n", np2->name);
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of_node_put(np2);
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return -EINVAL;
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}
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of_node_put(np2);
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res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
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utdm->si_regs = devm_ioremap_resource(&pdev->dev, res);
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if (IS_ERR(utdm->si_regs)) {
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ret = PTR_ERR(utdm->si_regs);
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goto err_miss_siram_property;
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}
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np2 = of_find_compatible_node(NULL, NULL, "fsl,t1040-qe-siram");
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if (!np2) {
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ret = -EINVAL;
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goto err_miss_siram_property;
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}
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pdev = of_find_device_by_node(np2);
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if (!pdev) {
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ret = -EINVAL;
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pr_err("%s: failed to lookup pdev\n", np2->name);
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of_node_put(np2);
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goto err_miss_siram_property;
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}
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of_node_put(np2);
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res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
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utdm->siram = devm_ioremap_resource(&pdev->dev, res);
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if (IS_ERR(utdm->siram)) {
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ret = PTR_ERR(utdm->siram);
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goto err_miss_siram_property;
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}
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if (siram_init_flag == 0) {
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memset_io(utdm->siram, 0, resource_size(res));
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siram_init_flag = 1;
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}
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return ret;
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err_miss_siram_property:
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devm_iounmap(&pdev->dev, utdm->si_regs);
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return ret;
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}
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EXPORT_SYMBOL(ucc_of_parse_tdm);
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void ucc_tdm_init(struct ucc_tdm *utdm, struct ucc_tdm_info *ut_info)
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{
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struct si1 __iomem *si_regs;
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u16 __iomem *siram;
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u16 siram_entry_valid;
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u16 siram_entry_closed;
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u16 ucc_num;
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u8 csel;
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u16 sixmr;
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u16 tdm_port;
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u32 siram_entry_id;
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u32 mask;
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int i;
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si_regs = utdm->si_regs;
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siram = utdm->siram;
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ucc_num = ut_info->uf_info.ucc_num;
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tdm_port = utdm->tdm_port;
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siram_entry_id = utdm->siram_entry_id;
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if (utdm->tdm_framer_type == TDM_FRAMER_T1)
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utdm->num_of_ts = 24;
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if (utdm->tdm_framer_type == TDM_FRAMER_E1)
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utdm->num_of_ts = 32;
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/* set siram table */
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csel = (ucc_num < 4) ? ucc_num + 9 : ucc_num - 3;
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siram_entry_valid = SIR_CSEL(csel) | SIR_BYTE | SIR_CNT(0);
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siram_entry_closed = SIR_IDLE | SIR_BYTE | SIR_CNT(0);
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for (i = 0; i < utdm->num_of_ts; i++) {
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mask = 0x01 << i;
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if (utdm->tx_ts_mask & mask)
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iowrite16be(siram_entry_valid,
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&siram[siram_entry_id * 32 + i]);
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else
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iowrite16be(siram_entry_closed,
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&siram[siram_entry_id * 32 + i]);
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if (utdm->rx_ts_mask & mask)
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iowrite16be(siram_entry_valid,
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&siram[siram_entry_id * 32 + 0x200 + i]);
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else
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iowrite16be(siram_entry_closed,
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&siram[siram_entry_id * 32 + 0x200 + i]);
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}
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setbits16(&siram[(siram_entry_id * 32) + (utdm->num_of_ts - 1)],
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SIR_LAST);
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setbits16(&siram[(siram_entry_id * 32) + 0x200 + (utdm->num_of_ts - 1)],
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SIR_LAST);
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/* Set SIxMR register */
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sixmr = SIMR_SAD(siram_entry_id);
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sixmr &= ~SIMR_SDM_MASK;
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if (utdm->tdm_mode == TDM_INTERNAL_LOOPBACK)
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sixmr |= SIMR_SDM_INTERNAL_LOOPBACK;
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else
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sixmr |= SIMR_SDM_NORMAL;
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sixmr |= SIMR_RFSD(ut_info->si_info.simr_rfsd) |
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SIMR_TFSD(ut_info->si_info.simr_tfsd);
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if (ut_info->si_info.simr_crt)
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sixmr |= SIMR_CRT;
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if (ut_info->si_info.simr_sl)
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sixmr |= SIMR_SL;
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if (ut_info->si_info.simr_ce)
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sixmr |= SIMR_CE;
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if (ut_info->si_info.simr_fe)
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sixmr |= SIMR_FE;
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if (ut_info->si_info.simr_gm)
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sixmr |= SIMR_GM;
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switch (tdm_port) {
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case 0:
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iowrite16be(sixmr, &si_regs->sixmr1[0]);
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break;
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case 1:
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iowrite16be(sixmr, &si_regs->sixmr1[1]);
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break;
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case 2:
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iowrite16be(sixmr, &si_regs->sixmr1[2]);
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break;
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case 3:
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iowrite16be(sixmr, &si_regs->sixmr1[3]);
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break;
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default:
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pr_err("QE-TDM: can not find tdm sixmr reg\n");
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break;
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}
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}
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EXPORT_SYMBOL(ucc_tdm_init);
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