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![Thomas Gleixner](/assets/img/avatar_default.png)
Based on 3 normalized pattern(s): 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 this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details 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 [author] [kishon] [vijay] [abraham] [i] [kishon]@[ti] [com] this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details 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 [author] [graeme] [gregory] [gg]@[slimlogic] [co] [uk] [author] [kishon] [vijay] [abraham] [i] [kishon]@[ti] [com] [based] [on] [twl6030]_[usb] [c] [author] [hema] [hk] [hemahk]@[ti] [com] this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 1105 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Richard Fontana <rfontana@redhat.com> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070033.202006027@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
239 lines
6.9 KiB
C
239 lines
6.9 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* netup_unidvb_ci.c
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*
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* DVB CAM support for NetUP Universal Dual DVB-CI
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*
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* Copyright (C) 2014 NetUP Inc.
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* Copyright (C) 2014 Sergey Kozlov <serjk@netup.ru>
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* Copyright (C) 2014 Abylay Ospan <aospan@netup.ru>
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*/
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#include <linux/init.h>
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#include <linux/module.h>
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#include <linux/moduleparam.h>
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#include <linux/kmod.h>
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#include <linux/kernel.h>
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#include <linux/slab.h>
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#include <linux/interrupt.h>
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#include <linux/delay.h>
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#include "netup_unidvb.h"
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/* CI slot 0 base address */
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#define CAM0_CONFIG 0x0
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#define CAM0_IO 0x8000
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#define CAM0_MEM 0x10000
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#define CAM0_SZ 32
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/* CI slot 1 base address */
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#define CAM1_CONFIG 0x20000
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#define CAM1_IO 0x28000
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#define CAM1_MEM 0x30000
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#define CAM1_SZ 32
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/* ctrlstat registers */
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#define CAM_CTRLSTAT_READ_SET 0x4980
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#define CAM_CTRLSTAT_CLR 0x4982
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/* register bits */
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#define BIT_CAM_STCHG (1<<0)
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#define BIT_CAM_PRESENT (1<<1)
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#define BIT_CAM_RESET (1<<2)
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#define BIT_CAM_BYPASS (1<<3)
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#define BIT_CAM_READY (1<<4)
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#define BIT_CAM_ERROR (1<<5)
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#define BIT_CAM_OVERCURR (1<<6)
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/* BIT_CAM_BYPASS bit shift for SLOT 1 */
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#define CAM1_SHIFT 8
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irqreturn_t netup_ci_interrupt(struct netup_unidvb_dev *ndev)
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{
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writew(0x101, ndev->bmmio0 + CAM_CTRLSTAT_CLR);
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return IRQ_HANDLED;
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}
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static int netup_unidvb_ci_slot_ts_ctl(struct dvb_ca_en50221 *en50221,
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int slot)
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{
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struct netup_ci_state *state = en50221->data;
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struct netup_unidvb_dev *dev = state->dev;
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u16 shift = (state->nr == 1) ? CAM1_SHIFT : 0;
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dev_dbg(&dev->pci_dev->dev, "%s(): CAM_CTRLSTAT=0x%x\n",
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__func__, readw(dev->bmmio0 + CAM_CTRLSTAT_READ_SET));
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if (slot != 0)
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return -EINVAL;
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/* pass data to CAM module */
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writew(BIT_CAM_BYPASS << shift, dev->bmmio0 + CAM_CTRLSTAT_CLR);
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dev_dbg(&dev->pci_dev->dev, "%s(): CAM_CTRLSTAT=0x%x done\n",
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__func__, readw(dev->bmmio0 + CAM_CTRLSTAT_READ_SET));
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return 0;
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}
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static int netup_unidvb_ci_slot_shutdown(struct dvb_ca_en50221 *en50221,
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int slot)
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{
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struct netup_ci_state *state = en50221->data;
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struct netup_unidvb_dev *dev = state->dev;
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dev_dbg(&dev->pci_dev->dev, "%s()\n", __func__);
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return 0;
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}
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static int netup_unidvb_ci_slot_reset(struct dvb_ca_en50221 *en50221,
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int slot)
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{
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struct netup_ci_state *state = en50221->data;
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struct netup_unidvb_dev *dev = state->dev;
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unsigned long timeout = 0;
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u16 shift = (state->nr == 1) ? CAM1_SHIFT : 0;
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u16 ci_stat = 0;
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int reset_counter = 3;
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dev_dbg(&dev->pci_dev->dev, "%s(): CAM_CTRLSTAT_READ_SET=0x%x\n",
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__func__, readw(dev->bmmio0 + CAM_CTRLSTAT_READ_SET));
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reset:
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timeout = jiffies + msecs_to_jiffies(5000);
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/* start reset */
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writew(BIT_CAM_RESET << shift, dev->bmmio0 + CAM_CTRLSTAT_READ_SET);
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dev_dbg(&dev->pci_dev->dev, "%s(): waiting for reset\n", __func__);
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/* wait until reset done */
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while (time_before(jiffies, timeout)) {
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ci_stat = readw(dev->bmmio0 + CAM_CTRLSTAT_READ_SET);
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if (ci_stat & (BIT_CAM_READY << shift))
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break;
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udelay(1000);
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}
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if (!(ci_stat & (BIT_CAM_READY << shift)) && reset_counter > 0) {
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dev_dbg(&dev->pci_dev->dev,
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"%s(): CAMP reset timeout! Will try again..\n",
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__func__);
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reset_counter--;
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goto reset;
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}
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return 0;
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}
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static int netup_unidvb_poll_ci_slot_status(struct dvb_ca_en50221 *en50221,
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int slot, int open)
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{
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struct netup_ci_state *state = en50221->data;
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struct netup_unidvb_dev *dev = state->dev;
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u16 shift = (state->nr == 1) ? CAM1_SHIFT : 0;
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u16 ci_stat = 0;
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dev_dbg(&dev->pci_dev->dev, "%s(): CAM_CTRLSTAT_READ_SET=0x%x\n",
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__func__, readw(dev->bmmio0 + CAM_CTRLSTAT_READ_SET));
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ci_stat = readw(dev->bmmio0 + CAM_CTRLSTAT_READ_SET);
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if (ci_stat & (BIT_CAM_READY << shift)) {
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state->status = DVB_CA_EN50221_POLL_CAM_PRESENT |
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DVB_CA_EN50221_POLL_CAM_READY;
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} else if (ci_stat & (BIT_CAM_PRESENT << shift)) {
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state->status = DVB_CA_EN50221_POLL_CAM_PRESENT;
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} else {
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state->status = 0;
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}
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return state->status;
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}
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static int netup_unidvb_ci_read_attribute_mem(struct dvb_ca_en50221 *en50221,
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int slot, int addr)
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{
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struct netup_ci_state *state = en50221->data;
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struct netup_unidvb_dev *dev = state->dev;
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u8 val = *((u8 __force *)state->membase8_config + addr);
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dev_dbg(&dev->pci_dev->dev,
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"%s(): addr=0x%x val=0x%x\n", __func__, addr, val);
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return val;
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}
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static int netup_unidvb_ci_write_attribute_mem(struct dvb_ca_en50221 *en50221,
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int slot, int addr, u8 data)
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{
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struct netup_ci_state *state = en50221->data;
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struct netup_unidvb_dev *dev = state->dev;
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dev_dbg(&dev->pci_dev->dev,
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"%s(): addr=0x%x data=0x%x\n", __func__, addr, data);
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*((u8 __force *)state->membase8_config + addr) = data;
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return 0;
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}
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static int netup_unidvb_ci_read_cam_ctl(struct dvb_ca_en50221 *en50221,
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int slot, u8 addr)
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{
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struct netup_ci_state *state = en50221->data;
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struct netup_unidvb_dev *dev = state->dev;
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u8 val = *((u8 __force *)state->membase8_io + addr);
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dev_dbg(&dev->pci_dev->dev,
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"%s(): addr=0x%x val=0x%x\n", __func__, addr, val);
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return val;
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}
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static int netup_unidvb_ci_write_cam_ctl(struct dvb_ca_en50221 *en50221,
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int slot, u8 addr, u8 data)
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{
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struct netup_ci_state *state = en50221->data;
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struct netup_unidvb_dev *dev = state->dev;
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dev_dbg(&dev->pci_dev->dev,
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"%s(): addr=0x%x data=0x%x\n", __func__, addr, data);
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*((u8 __force *)state->membase8_io + addr) = data;
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return 0;
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}
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int netup_unidvb_ci_register(struct netup_unidvb_dev *dev,
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int num, struct pci_dev *pci_dev)
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{
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int result;
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struct netup_ci_state *state;
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if (num < 0 || num > 1) {
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dev_err(&pci_dev->dev, "%s(): invalid CI adapter %d\n",
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__func__, num);
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return -EINVAL;
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}
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state = &dev->ci[num];
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state->nr = num;
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state->membase8_config = dev->bmmio1 +
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((num == 0) ? CAM0_CONFIG : CAM1_CONFIG);
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state->membase8_io = dev->bmmio1 +
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((num == 0) ? CAM0_IO : CAM1_IO);
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state->dev = dev;
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state->ca.owner = THIS_MODULE;
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state->ca.read_attribute_mem = netup_unidvb_ci_read_attribute_mem;
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state->ca.write_attribute_mem = netup_unidvb_ci_write_attribute_mem;
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state->ca.read_cam_control = netup_unidvb_ci_read_cam_ctl;
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state->ca.write_cam_control = netup_unidvb_ci_write_cam_ctl;
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state->ca.slot_reset = netup_unidvb_ci_slot_reset;
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state->ca.slot_shutdown = netup_unidvb_ci_slot_shutdown;
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state->ca.slot_ts_enable = netup_unidvb_ci_slot_ts_ctl;
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state->ca.poll_slot_status = netup_unidvb_poll_ci_slot_status;
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state->ca.data = state;
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result = dvb_ca_en50221_init(&dev->frontends[num].adapter,
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&state->ca, 0, 1);
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if (result < 0) {
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dev_err(&pci_dev->dev,
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"%s(): dvb_ca_en50221_init result %d\n",
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__func__, result);
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return result;
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}
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writew(NETUP_UNIDVB_IRQ_CI, dev->bmmio0 + REG_IMASK_SET);
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dev_info(&pci_dev->dev,
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"%s(): CI adapter %d init done\n", __func__, num);
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return 0;
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}
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void netup_unidvb_ci_unregister(struct netup_unidvb_dev *dev, int num)
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{
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struct netup_ci_state *state;
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dev_dbg(&dev->pci_dev->dev, "%s()\n", __func__);
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if (num < 0 || num > 1) {
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dev_err(&dev->pci_dev->dev, "%s(): invalid CI adapter %d\n",
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__func__, num);
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return;
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}
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state = &dev->ci[num];
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dvb_ca_en50221_release(&state->ca);
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}
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