drivers/media/pci/mantis/hopper_cards.c

   1 /*
   2         Hopper PCI bridge driver
   3
   4         Copyright (C) Manu Abraham (abraham.manu@gmail.com)
   5
   6         This program is free software; you can redistribute it and/or modify
   7         it under the terms of the GNU General Public License as published by
   8         the Free Software Foundation; either version 2 of the License, or
   9         (at your option) any later version.
  10
  11         This program is distributed in the hope that it will be useful,
  12         but WITHOUT ANY WARRANTY; without even the implied warranty of
  13         MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14         GNU General Public License for more details.
  15
  16         You should have received a copy of the GNU General Public License
  17         along with this program; if not, write to the Free Software
  18         Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  19 */
  20
  21 #include <linux/module.h>
  22 #include <linux/moduleparam.h>
  23 #include <linux/kernel.h>
  24 #include <linux/pci.h>
  25 #include <linux/slab.h>
  26 #include <asm/irq.h>
  27 #include <linux/interrupt.h>
  28
  29 #include <media/dmxdev.h>
  30 #include <media/dvbdev.h>
  31 #include <media/dvb_demux.h>
  32 #include <media/dvb_frontend.h>
  33 #include <media/dvb_net.h>
  34
  35 #include "mantis_common.h"
  36 #include "hopper_vp3028.h"
  37 #include "mantis_dma.h"
  38 #include "mantis_dvb.h"
  39 #include "mantis_uart.h"
  40 #include "mantis_ioc.h"
  41 #include "mantis_pci.h"
  42 #include "mantis_i2c.h"
  43 #include "mantis_reg.h"
  44
  45 static unsigned int verbose;
  46 module_param(verbose, int, 0644);
  47 MODULE_PARM_DESC(verbose, "verbose startup messages, default is 0 (no)");
  48
  49 #define DRIVER_NAME     "Hopper"
  50
  51 static char *label[10] = {
  52         "DMA",
  53         "IRQ-0",
  54         "IRQ-1",
  55         "OCERR",
  56         "PABRT",
  57         "RIPRR",
  58         "PPERR",
  59         "FTRGT",
  60         "RISCI",
  61         "RACK"
  62 };
  63
  64 static int devs;
  65
  66 static irqreturn_t hopper_irq_handler(int irq, void *dev_id)
  67 {
  68         u32 stat = 0, mask = 0;
  69         u32 rst_stat = 0, rst_mask = 0;
  70
  71         struct mantis_pci *mantis;
  72         struct mantis_ca *ca;
  73
  74         mantis = (struct mantis_pci *) dev_id;
  75         if (unlikely(!mantis)) {
  76                 dprintk(MANTIS_ERROR, 1, "Mantis == NULL");
  77                 return IRQ_NONE;
  78         }
  79         ca = mantis->mantis_ca;
  80
  81         stat = mmread(MANTIS_INT_STAT);
  82         mask = mmread(MANTIS_INT_MASK);
  83         if (!(stat & mask))
  84                 return IRQ_NONE;
  85
  86         rst_mask  = MANTIS_GPIF_WRACK  |
  87                     MANTIS_GPIF_OTHERR |
  88                     MANTIS_SBUF_WSTO   |
  89                     MANTIS_GPIF_EXTIRQ;
  90
  91         rst_stat  = mmread(MANTIS_GPIF_STATUS);
  92         rst_stat &= rst_mask;
  93         mmwrite(rst_stat, MANTIS_GPIF_STATUS);
  94
  95         mantis->mantis_int_stat = stat;
  96         mantis->mantis_int_mask = mask;
  97         dprintk(MANTIS_DEBUG, 0, "\n-- Stat=<%02x> Mask=<%02x> --", stat, mask);
  98         if (stat & MANTIS_INT_RISCEN) {
  99                 dprintk(MANTIS_DEBUG, 0, "<%s>", label[0]);
 100         }
 101         if (stat & MANTIS_INT_IRQ0) {
 102                 dprintk(MANTIS_DEBUG, 0, "<%s>", label[1]);
 103                 mantis->gpif_status = rst_stat;
 104                 wake_up(&ca->hif_write_wq);
 105                 schedule_work(&ca->hif_evm_work);
 106         }
 107         if (stat & MANTIS_INT_IRQ1) {
 108                 dprintk(MANTIS_DEBUG, 0, "<%s>", label[2]);
 109                 spin_lock(&mantis->intmask_lock);
 110                 mmwrite(mmread(MANTIS_INT_MASK) & ~MANTIS_INT_IRQ1,
 111                         MANTIS_INT_MASK);
 112                 spin_unlock(&mantis->intmask_lock);
 113                 schedule_work(&mantis->uart_work);
 114         }
 115         if (stat & MANTIS_INT_OCERR) {
 116                 dprintk(MANTIS_DEBUG, 0, "<%s>", label[3]);
 117         }
 118         if (stat & MANTIS_INT_PABORT) {
 119                 dprintk(MANTIS_DEBUG, 0, "<%s>", label[4]);
 120         }
 121         if (stat & MANTIS_INT_RIPERR) {
 122                 dprintk(MANTIS_DEBUG, 0, "<%s>", label[5]);
 123         }
 124         if (stat & MANTIS_INT_PPERR) {
 125                 dprintk(MANTIS_DEBUG, 0, "<%s>", label[6]);
 126         }
 127         if (stat & MANTIS_INT_FTRGT) {
 128                 dprintk(MANTIS_DEBUG, 0, "<%s>", label[7]);
 129         }
 130         if (stat & MANTIS_INT_RISCI) {
 131                 dprintk(MANTIS_DEBUG, 0, "<%s>", label[8]);
 132                 mantis->busy_block = (stat & MANTIS_INT_RISCSTAT) >> 28;
 133                 tasklet_schedule(&mantis->tasklet);
 134         }
 135         if (stat & MANTIS_INT_I2CDONE) {
 136                 dprintk(MANTIS_DEBUG, 0, "<%s>", label[9]);
 137                 wake_up(&mantis->i2c_wq);
 138         }
 139         mmwrite(stat, MANTIS_INT_STAT);
 140         stat &= ~(MANTIS_INT_RISCEN   | MANTIS_INT_I2CDONE |
 141                   MANTIS_INT_I2CRACK  | MANTIS_INT_PCMCIA7 |
 142                   MANTIS_INT_PCMCIA6  | MANTIS_INT_PCMCIA5 |
 143                   MANTIS_INT_PCMCIA4  | MANTIS_INT_PCMCIA3 |
 144                   MANTIS_INT_PCMCIA2  | MANTIS_INT_PCMCIA1 |
 145                   MANTIS_INT_PCMCIA0  | MANTIS_INT_IRQ1    |
 146                   MANTIS_INT_IRQ0     | MANTIS_INT_OCERR   |
 147                   MANTIS_INT_PABORT   | MANTIS_INT_RIPERR  |
 148                   MANTIS_INT_PPERR    | MANTIS_INT_FTRGT   |
 149                   MANTIS_INT_RISCI);
 150
 151         if (stat)
 152                 dprintk(MANTIS_DEBUG, 0, "<Unknown> Stat=<%02x> Mask=<%02x>", stat, mask);
 153
 154         dprintk(MANTIS_DEBUG, 0, "\n");
 155         return IRQ_HANDLED;
 156 }
 157
 158 static int hopper_pci_probe(struct pci_dev *pdev,
 159                             const struct pci_device_id *pci_id)
 160 {
 161         struct mantis_pci_drvdata *drvdata;
 162         struct mantis_pci *mantis;
 163         struct mantis_hwconfig *config;
 164         int err;
 165
 166         mantis = kzalloc(sizeof(*mantis), GFP_KERNEL);
 167         if (!mantis) {
 168                 err = -ENOMEM;
 169                 goto fail0;
 170         }
 171
 172         drvdata                 = (void *)pci_id->driver_data;
 173         mantis->num             = devs;
 174         mantis->verbose         = verbose;
 175         mantis->pdev            = pdev;
 176         config                  = drvdata->hwconfig;
 177         config->irq_handler     = &hopper_irq_handler;
 178         mantis->hwconfig        = config;
 179         mantis->rc_map_name     = drvdata->rc_map_name;
 180
 181         spin_lock_init(&mantis->intmask_lock);
 182
 183         err = mantis_pci_init(mantis);
 184         if (err) {
 185                 dprintk(MANTIS_ERROR, 1, "ERROR: Mantis PCI initialization failed <%d>", err);
 186                 goto fail1;
 187         }
 188
 189         err = mantis_stream_control(mantis, STREAM_TO_HIF);
 190         if (err < 0) {
 191                 dprintk(MANTIS_ERROR, 1, "ERROR: Mantis stream control failed <%d>", err);
 192                 goto fail1;
 193         }
 194
 195         err = mantis_i2c_init(mantis);
 196         if (err < 0) {
 197                 dprintk(MANTIS_ERROR, 1, "ERROR: Mantis I2C initialization failed <%d>", err);
 198                 goto fail2;
 199         }
 200
 201         err = mantis_get_mac(mantis);
 202         if (err < 0) {
 203                 dprintk(MANTIS_ERROR, 1, "ERROR: Mantis MAC address read failed <%d>", err);
 204                 goto fail2;
 205         }
 206
 207         err = mantis_dma_init(mantis);
 208         if (err < 0) {
 209                 dprintk(MANTIS_ERROR, 1, "ERROR: Mantis DMA initialization failed <%d>", err);
 210                 goto fail3;
 211         }
 212
 213         err = mantis_dvb_init(mantis);
 214         if (err < 0) {
 215                 dprintk(MANTIS_ERROR, 1, "ERROR: Mantis DVB initialization failed <%d>", err);
 216                 goto fail4;
 217         }
 218         devs++;
 219
 220         return err;
 221
 222 fail4:
 223         dprintk(MANTIS_ERROR, 1, "ERROR: Mantis DMA exit! <%d>", err);
 224         mantis_dma_exit(mantis);
 225
 226 fail3:
 227         dprintk(MANTIS_ERROR, 1, "ERROR: Mantis I2C exit! <%d>", err);
 228         mantis_i2c_exit(mantis);
 229
 230 fail2:
 231         dprintk(MANTIS_ERROR, 1, "ERROR: Mantis PCI exit! <%d>", err);
 232         mantis_pci_exit(mantis);
 233
 234 fail1:
 235         dprintk(MANTIS_ERROR, 1, "ERROR: Mantis free! <%d>", err);
 236         kfree(mantis);
 237
 238 fail0:
 239         return err;
 240 }
 241
 242 static void hopper_pci_remove(struct pci_dev *pdev)
 243 {
 244         struct mantis_pci *mantis = pci_get_drvdata(pdev);
 245
 246         if (mantis) {
 247                 mantis_dvb_exit(mantis);
 248                 mantis_dma_exit(mantis);
 249                 mantis_i2c_exit(mantis);
 250                 mantis_pci_exit(mantis);
 251                 kfree(mantis);
 252         }
 253         return;
 254
 255 }
 256
 257 static const struct pci_device_id hopper_pci_table[] = {
 258         MAKE_ENTRY(TWINHAN_TECHNOLOGIES, MANTIS_VP_3028_DVB_T, &vp3028_config,
 259                    NULL),
 260         { }
 261 };
 262
 263 MODULE_DEVICE_TABLE(pci, hopper_pci_table);
 264
 265 static struct pci_driver hopper_pci_driver = {
 266         .name           = DRIVER_NAME,
 267         .id_table       = hopper_pci_table,
 268         .probe          = hopper_pci_probe,
 269         .remove         = hopper_pci_remove,
 270 };
 271
 272 module_pci_driver(hopper_pci_driver);
 273
 274 MODULE_DESCRIPTION("HOPPER driver");
 275 MODULE_AUTHOR("Manu Abraham");
 276 MODULE_LICENSE("GPL");