diff options
author | Zhao Qiang <qiang.zhao@nxp.com> | 2016-06-06 14:30:01 +0800 |
---|---|---|
committer | David S. Miller <davem@davemloft.net> | 2016-06-07 15:56:31 -0700 |
commit | 35ef1c20fdb26779b6c3c4fd74bbdd5028e70005 (patch) | |
tree | 3f321ac6d830bb09031ab17fe9581c2653adfc44 /drivers/soc | |
parent | 19163ac3123e7fef8b1ecb2f1d4223f58ed5e884 (diff) | |
download | op-kernel-dev-35ef1c20fdb26779b6c3c4fd74bbdd5028e70005.zip op-kernel-dev-35ef1c20fdb26779b6c3c4fd74bbdd5028e70005.tar.gz |
fsl/qe: Add QE TDM lib
QE has module to support TDM, some other protocols
supported by QE are based on TDM.
add a qe-tdm lib, this lib provides functions to the protocols
using TDM to configurate QE-TDM.
Signed-off-by: Zhao Qiang <qiang.zhao@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/soc')
-rw-r--r-- | drivers/soc/fsl/qe/Kconfig | 6 | ||||
-rw-r--r-- | drivers/soc/fsl/qe/Makefile | 1 | ||||
-rw-r--r-- | drivers/soc/fsl/qe/qe_tdm.c | 276 |
3 files changed, 282 insertions, 1 deletions
diff --git a/drivers/soc/fsl/qe/Kconfig b/drivers/soc/fsl/qe/Kconfig index 20978f2..73a2e08 100644 --- a/drivers/soc/fsl/qe/Kconfig +++ b/drivers/soc/fsl/qe/Kconfig @@ -22,7 +22,7 @@ config UCC_SLOW config UCC_FAST bool - default y if UCC_GETH + default y if UCC_GETH || QE_TDM help This option provides qe_lib support to UCC fast protocols: HDLC, Ethernet, ATM, transparent @@ -31,6 +31,10 @@ config UCC bool default y if UCC_FAST || UCC_SLOW +config QE_TDM + bool + default y if FSL_UCC_HDLC + config QE_USB bool default y if USB_FSL_QE diff --git a/drivers/soc/fsl/qe/Makefile b/drivers/soc/fsl/qe/Makefile index ffac541..2031d38 100644 --- a/drivers/soc/fsl/qe/Makefile +++ b/drivers/soc/fsl/qe/Makefile @@ -6,5 +6,6 @@ obj-$(CONFIG_CPM) += qe_common.o obj-$(CONFIG_UCC) += ucc.o obj-$(CONFIG_UCC_SLOW) += ucc_slow.o obj-$(CONFIG_UCC_FAST) += ucc_fast.o +obj-$(CONFIG_QE_TDM) += qe_tdm.o obj-$(CONFIG_QE_USB) += usb.o obj-$(CONFIG_QE_GPIO) += gpio.o diff --git a/drivers/soc/fsl/qe/qe_tdm.c b/drivers/soc/fsl/qe/qe_tdm.c new file mode 100644 index 0000000..5e48b14 --- /dev/null +++ b/drivers/soc/fsl/qe/qe_tdm.c @@ -0,0 +1,276 @@ +/* + * Copyright (C) 2015 Freescale Semiconductor, Inc. All rights reserved. + * + * Authors: Zhao Qiang <qiang.zhao@nxp.com> + * + * Description: + * QE TDM API Set - TDM specific routines implementations. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License as published by the + * Free Software Foundation; either version 2 of the License, or (at your + * option) any later version. + */ +#include <linux/io.h> +#include <linux/kernel.h> +#include <linux/of_address.h> +#include <linux/of_irq.h> +#include <linux/of_platform.h> +#include <soc/fsl/qe/qe_tdm.h> + +static int set_tdm_framer(const char *tdm_framer_type) +{ + if (strcmp(tdm_framer_type, "e1") == 0) + return TDM_FRAMER_E1; + else if (strcmp(tdm_framer_type, "t1") == 0) + return TDM_FRAMER_T1; + else + return -EINVAL; +} + +static void set_si_param(struct ucc_tdm *utdm, struct ucc_tdm_info *ut_info) +{ + struct si_mode_info *si_info = &ut_info->si_info; + + if (utdm->tdm_mode == TDM_INTERNAL_LOOPBACK) { + si_info->simr_crt = 1; + si_info->simr_rfsd = 0; + } +} + +int ucc_of_parse_tdm(struct device_node *np, struct ucc_tdm *utdm, + struct ucc_tdm_info *ut_info) +{ + const char *sprop; + int ret = 0; + u32 val; + struct resource *res; + struct device_node *np2; + static int siram_init_flag; + struct platform_device *pdev; + + sprop = of_get_property(np, "fsl,rx-sync-clock", NULL); + if (sprop) { + ut_info->uf_info.rx_sync = qe_clock_source(sprop); + if ((ut_info->uf_info.rx_sync < QE_CLK_NONE) || + (ut_info->uf_info.rx_sync > QE_RSYNC_PIN)) { + pr_err("QE-TDM: Invalid rx-sync-clock property\n"); + return -EINVAL; + } + } else { + pr_err("QE-TDM: Invalid rx-sync-clock property\n"); + return -EINVAL; + } + + sprop = of_get_property(np, "fsl,tx-sync-clock", NULL); + if (sprop) { + ut_info->uf_info.tx_sync = qe_clock_source(sprop); + if ((ut_info->uf_info.tx_sync < QE_CLK_NONE) || + (ut_info->uf_info.tx_sync > QE_TSYNC_PIN)) { + pr_err("QE-TDM: Invalid tx-sync-clock property\n"); + return -EINVAL; + } + } else { + pr_err("QE-TDM: Invalid tx-sync-clock property\n"); + return -EINVAL; + } + + ret = of_property_read_u32_index(np, "fsl,tx-timeslot-mask", 0, &val); + if (ret) { + pr_err("QE-TDM: Invalid tx-timeslot-mask property\n"); + return -EINVAL; + } + utdm->tx_ts_mask = val; + + ret = of_property_read_u32_index(np, "fsl,rx-timeslot-mask", 0, &val); + if (ret) { + ret = -EINVAL; + pr_err("QE-TDM: Invalid rx-timeslot-mask property\n"); + return ret; + } + utdm->rx_ts_mask = val; + + ret = of_property_read_u32_index(np, "fsl,tdm-id", 0, &val); + if (ret) { + ret = -EINVAL; + pr_err("QE-TDM: No fsl,tdm-id property for this UCC\n"); + return ret; + } + utdm->tdm_port = val; + ut_info->uf_info.tdm_num = utdm->tdm_port; + + if (of_get_property(np, "fsl,tdm-internal-loopback", NULL)) + utdm->tdm_mode = TDM_INTERNAL_LOOPBACK; + else + utdm->tdm_mode = TDM_NORMAL; + + sprop = of_get_property(np, "fsl,tdm-framer-type", NULL); + if (!sprop) { + ret = -EINVAL; + pr_err("QE-TDM: No tdm-framer-type property for UCC\n"); + return ret; + } + ret = set_tdm_framer(sprop); + if (ret < 0) + return -EINVAL; + utdm->tdm_framer_type = ret; + + ret = of_property_read_u32_index(np, "fsl,siram-entry-id", 0, &val); + if (ret) { + ret = -EINVAL; + pr_err("QE-TDM: No siram entry id for UCC\n"); + return ret; + } + utdm->siram_entry_id = val; + + set_si_param(utdm, ut_info); + + np2 = of_find_compatible_node(NULL, NULL, "fsl,t1040-qe-si"); + if (!np2) + return -EINVAL; + + pdev = of_find_device_by_node(np2); + if (!pdev) { + pr_err("%s: failed to lookup pdev\n", np2->name); + of_node_put(np2); + return -EINVAL; + } + + of_node_put(np2); + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + utdm->si_regs = devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR(utdm->si_regs)) { + ret = PTR_ERR(utdm->si_regs); + goto err_miss_siram_property; + } + + np2 = of_find_compatible_node(NULL, NULL, "fsl,t1040-qe-siram"); + if (!np2) { + ret = -EINVAL; + goto err_miss_siram_property; + } + + pdev = of_find_device_by_node(np2); + if (!pdev) { + ret = -EINVAL; + pr_err("%s: failed to lookup pdev\n", np2->name); + of_node_put(np2); + goto err_miss_siram_property; + } + + of_node_put(np2); + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + utdm->siram = devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR(utdm->siram)) { + ret = PTR_ERR(utdm->siram); + goto err_miss_siram_property; + } + + if (siram_init_flag == 0) { + memset_io(utdm->siram, 0, res->end - res->start + 1); + siram_init_flag = 1; + } + + return ret; + +err_miss_siram_property: + devm_iounmap(&pdev->dev, utdm->si_regs); + return ret; +} + +void ucc_tdm_init(struct ucc_tdm *utdm, struct ucc_tdm_info *ut_info) +{ + struct si1 __iomem *si_regs; + u16 __iomem *siram; + u16 siram_entry_valid; + u16 siram_entry_closed; + u16 ucc_num; + u8 csel; + u16 sixmr; + u16 tdm_port; + u32 siram_entry_id; + u32 mask; + int i; + + si_regs = utdm->si_regs; + siram = utdm->siram; + ucc_num = ut_info->uf_info.ucc_num; + tdm_port = utdm->tdm_port; + siram_entry_id = utdm->siram_entry_id; + + if (utdm->tdm_framer_type == TDM_FRAMER_T1) + utdm->num_of_ts = 24; + if (utdm->tdm_framer_type == TDM_FRAMER_E1) + utdm->num_of_ts = 32; + + /* set siram table */ + csel = (ucc_num < 4) ? ucc_num + 9 : ucc_num - 3; + + siram_entry_valid = SIR_CSEL(csel) | SIR_BYTE | SIR_CNT(0); + siram_entry_closed = SIR_IDLE | SIR_BYTE | SIR_CNT(0); + + for (i = 0; i < utdm->num_of_ts; i++) { + mask = 0x01 << i; + + if (utdm->tx_ts_mask & mask) + iowrite16be(siram_entry_valid, + &siram[siram_entry_id * 32 + i]); + else + iowrite16be(siram_entry_closed, + &siram[siram_entry_id * 32 + i]); + + if (utdm->rx_ts_mask & mask) + iowrite16be(siram_entry_valid, + &siram[siram_entry_id * 32 + 0x200 + i]); + else + iowrite16be(siram_entry_closed, + &siram[siram_entry_id * 32 + 0x200 + i]); + } + + setbits16(&siram[(siram_entry_id * 32) + (utdm->num_of_ts - 1)], + SIR_LAST); + setbits16(&siram[(siram_entry_id * 32) + 0x200 + (utdm->num_of_ts - 1)], + SIR_LAST); + + /* Set SIxMR register */ + sixmr = SIMR_SAD(siram_entry_id); + + sixmr &= ~SIMR_SDM_MASK; + + if (utdm->tdm_mode == TDM_INTERNAL_LOOPBACK) + sixmr |= SIMR_SDM_INTERNAL_LOOPBACK; + else + sixmr |= SIMR_SDM_NORMAL; + + sixmr |= SIMR_RFSD(ut_info->si_info.simr_rfsd) | + SIMR_TFSD(ut_info->si_info.simr_tfsd); + + if (ut_info->si_info.simr_crt) + sixmr |= SIMR_CRT; + if (ut_info->si_info.simr_sl) + sixmr |= SIMR_SL; + if (ut_info->si_info.simr_ce) + sixmr |= SIMR_CE; + if (ut_info->si_info.simr_fe) + sixmr |= SIMR_FE; + if (ut_info->si_info.simr_gm) + sixmr |= SIMR_GM; + + switch (tdm_port) { + case 0: + iowrite16be(sixmr, &si_regs->sixmr1[0]); + break; + case 1: + iowrite16be(sixmr, &si_regs->sixmr1[1]); + break; + case 2: + iowrite16be(sixmr, &si_regs->sixmr1[2]); + break; + case 3: + iowrite16be(sixmr, &si_regs->sixmr1[3]); + break; + default: + pr_err("QE-TDM: can not find tdm sixmr reg\n"); + break; + } +} |