drivers/media/pci/mantis/hopper_cards.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3         Hopper PCI bridge driver
   4
   5         Copyright (C) Manu Abraham (abraham.manu@gmail.com)
   6
   7 */
   8
   9 #include <linux/module.h>
  10 #include <linux/moduleparam.h>
  11 #include <linux/kernel.h>
  12 #include <linux/pci.h>
  13 #include <linux/slab.h>
  14 #include <asm/irq.h>
  15 #include <linux/interrupt.h>
  16
  17 #include <media/dmxdev.h>
  18 #include <media/dvbdev.h>
  19 #include <media/dvb_demux.h>
  20 #include <media/dvb_frontend.h>
  21 #include <media/dvb_net.h>
  22
  23 #include "mantis_common.h"
  24 #include "hopper_vp3028.h"
  25 #include "mantis_dma.h"
  26 #include "mantis_dvb.h"
  27 #include "mantis_uart.h"
  28 #include "mantis_ioc.h"
  29 #include "mantis_pci.h"
  30 #include "mantis_i2c.h"
  31 #include "mantis_reg.h"
  32
  33 static unsigned int verbose;
  34 module_param(verbose, int, 0644);
  35 MODULE_PARM_DESC(verbose, "verbose startup messages, default is 0 (no)");
  36
  37 #define DRIVER_NAME     "Hopper"
  38
  39 static char *label[10] = {
  40         "DMA",
  41         "IRQ-0",
  42         "IRQ-1",
  43         "OCERR",
  44         "PABRT",
  45         "RIPRR",
  46         "PPERR",
  47         "FTRGT",
  48         "RISCI",
  49         "RACK"
  50 };
  51
  52 static int devs;
  53
  54 static irqreturn_t hopper_irq_handler(int irq, void *dev_id)
  55 {
  56         u32 stat = 0, mask = 0;
  57         u32 rst_stat = 0, rst_mask = 0;
  58
  59         struct mantis_pci *mantis;
  60         struct mantis_ca *ca;
  61
  62         mantis = (struct mantis_pci *) dev_id;
  63         if (unlikely(!mantis))
  64                 return IRQ_NONE;
  65         ca = mantis->mantis_ca;
  66
  67         stat = mmread(MANTIS_INT_STAT);
  68         mask = mmread(MANTIS_INT_MASK);
  69         if (!(stat & mask))
  70                 return IRQ_NONE;
  71
  72         rst_mask  = MANTIS_GPIF_WRACK  |
  73                     MANTIS_GPIF_OTHERR |
  74                     MANTIS_SBUF_WSTO   |
  75                     MANTIS_GPIF_EXTIRQ;
  76
  77         rst_stat  = mmread(MANTIS_GPIF_STATUS);
  78         rst_stat &= rst_mask;
  79         mmwrite(rst_stat, MANTIS_GPIF_STATUS);
  80
  81         mantis->mantis_int_stat = stat;
  82         mantis->mantis_int_mask = mask;
  83         dprintk(MANTIS_DEBUG, 0, "\n-- Stat=<%02x> Mask=<%02x> --", stat, mask);
  84         if (stat & MANTIS_INT_RISCEN) {
  85                 dprintk(MANTIS_DEBUG, 0, "<%s>", label[0]);
  86         }
  87         if (stat & MANTIS_INT_IRQ0) {
  88                 dprintk(MANTIS_DEBUG, 0, "<%s>", label[1]);
  89                 mantis->gpif_status = rst_stat;
  90                 wake_up(&ca->hif_write_wq);
  91                 schedule_work(&ca->hif_evm_work);
  92         }
  93         if (stat & MANTIS_INT_IRQ1) {
  94                 dprintk(MANTIS_DEBUG, 0, "<%s>", label[2]);
  95                 spin_lock(&mantis->intmask_lock);
  96                 mmwrite(mmread(MANTIS_INT_MASK) & ~MANTIS_INT_IRQ1,
  97                         MANTIS_INT_MASK);
  98                 spin_unlock(&mantis->intmask_lock);
  99                 schedule_work(&mantis->uart_work);
 100         }
 101         if (stat & MANTIS_INT_OCERR) {
 102                 dprintk(MANTIS_DEBUG, 0, "<%s>", label[3]);
 103         }
 104         if (stat & MANTIS_INT_PABORT) {
 105                 dprintk(MANTIS_DEBUG, 0, "<%s>", label[4]);
 106         }
 107         if (stat & MANTIS_INT_RIPERR) {
 108                 dprintk(MANTIS_DEBUG, 0, "<%s>", label[5]);
 109         }
 110         if (stat & MANTIS_INT_PPERR) {
 111                 dprintk(MANTIS_DEBUG, 0, "<%s>", label[6]);
 112         }
 113         if (stat & MANTIS_INT_FTRGT) {
 114                 dprintk(MANTIS_DEBUG, 0, "<%s>", label[7]);
 115         }
 116         if (stat & MANTIS_INT_RISCI) {
 117                 dprintk(MANTIS_DEBUG, 0, "<%s>", label[8]);
 118                 mantis->busy_block = (stat & MANTIS_INT_RISCSTAT) >> 28;
 119                 tasklet_schedule(&mantis->tasklet);
 120         }
 121         if (stat & MANTIS_INT_I2CDONE) {
 122                 dprintk(MANTIS_DEBUG, 0, "<%s>", label[9]);
 123                 wake_up(&mantis->i2c_wq);
 124         }
 125         mmwrite(stat, MANTIS_INT_STAT);
 126         stat &= ~(MANTIS_INT_RISCEN   | MANTIS_INT_I2CDONE |
 127                   MANTIS_INT_I2CRACK  | MANTIS_INT_PCMCIA7 |
 128                   MANTIS_INT_PCMCIA6  | MANTIS_INT_PCMCIA5 |
 129                   MANTIS_INT_PCMCIA4  | MANTIS_INT_PCMCIA3 |
 130                   MANTIS_INT_PCMCIA2  | MANTIS_INT_PCMCIA1 |
 131                   MANTIS_INT_PCMCIA0  | MANTIS_INT_IRQ1    |
 132                   MANTIS_INT_IRQ0     | MANTIS_INT_OCERR   |
 133                   MANTIS_INT_PABORT   | MANTIS_INT_RIPERR  |
 134                   MANTIS_INT_PPERR    | MANTIS_INT_FTRGT   |
 135                   MANTIS_INT_RISCI);
 136
 137         if (stat)
 138                 dprintk(MANTIS_DEBUG, 0, "<Unknown> Stat=<%02x> Mask=<%02x>", stat, mask);
 139
 140         dprintk(MANTIS_DEBUG, 0, "\n");
 141         return IRQ_HANDLED;
 142 }
 143
 144 static int hopper_pci_probe(struct pci_dev *pdev,
 145                             const struct pci_device_id *pci_id)
 146 {
 147         struct mantis_pci_drvdata *drvdata;
 148         struct mantis_pci *mantis;
 149         struct mantis_hwconfig *config;
 150         int err;
 151
 152         mantis = kzalloc(sizeof(*mantis), GFP_KERNEL);
 153         if (!mantis) {
 154                 err = -ENOMEM;
 155                 goto fail0;
 156         }
 157
 158         drvdata                 = (void *)pci_id->driver_data;
 159         mantis->num             = devs;
 160         mantis->verbose         = verbose;
 161         mantis->pdev            = pdev;
 162         config                  = drvdata->hwconfig;
 163         config->irq_handler     = &hopper_irq_handler;
 164         mantis->hwconfig        = config;
 165         mantis->rc_map_name     = drvdata->rc_map_name;
 166
 167         spin_lock_init(&mantis->intmask_lock);
 168
 169         err = mantis_pci_init(mantis);
 170         if (err) {
 171                 dprintk(MANTIS_ERROR, 1, "ERROR: Mantis PCI initialization failed <%d>", err);
 172                 goto fail1;
 173         }
 174
 175         err = mantis_stream_control(mantis, STREAM_TO_HIF);
 176         if (err < 0) {
 177                 dprintk(MANTIS_ERROR, 1, "ERROR: Mantis stream control failed <%d>", err);
 178                 goto fail1;
 179         }
 180
 181         err = mantis_i2c_init(mantis);
 182         if (err < 0) {
 183                 dprintk(MANTIS_ERROR, 1, "ERROR: Mantis I2C initialization failed <%d>", err);
 184                 goto fail2;
 185         }
 186
 187         err = mantis_get_mac(mantis);
 188         if (err < 0) {
 189                 dprintk(MANTIS_ERROR, 1, "ERROR: Mantis MAC address read failed <%d>", err);
 190                 goto fail2;
 191         }
 192
 193         err = mantis_dma_init(mantis);
 194         if (err < 0) {
 195                 dprintk(MANTIS_ERROR, 1, "ERROR: Mantis DMA initialization failed <%d>", err);
 196                 goto fail3;
 197         }
 198
 199         err = mantis_dvb_init(mantis);
 200         if (err < 0) {
 201                 dprintk(MANTIS_ERROR, 1, "ERROR: Mantis DVB initialization failed <%d>", err);
 202                 goto fail4;
 203         }
 204         devs++;
 205
 206         return err;
 207
 208 fail4:
 209         dprintk(MANTIS_ERROR, 1, "ERROR: Mantis DMA exit! <%d>", err);
 210         mantis_dma_exit(mantis);
 211
 212 fail3:
 213         dprintk(MANTIS_ERROR, 1, "ERROR: Mantis I2C exit! <%d>", err);
 214         mantis_i2c_exit(mantis);
 215
 216 fail2:
 217         dprintk(MANTIS_ERROR, 1, "ERROR: Mantis PCI exit! <%d>", err);
 218         mantis_pci_exit(mantis);
 219
 220 fail1:
 221         dprintk(MANTIS_ERROR, 1, "ERROR: Mantis free! <%d>", err);
 222         kfree(mantis);
 223
 224 fail0:
 225         return err;
 226 }
 227
 228 static void hopper_pci_remove(struct pci_dev *pdev)
 229 {
 230         struct mantis_pci *mantis = pci_get_drvdata(pdev);
 231
 232         if (mantis) {
 233                 mantis_dvb_exit(mantis);
 234                 mantis_dma_exit(mantis);
 235                 mantis_i2c_exit(mantis);
 236                 mantis_pci_exit(mantis);
 237                 kfree(mantis);
 238         }
 239         return;
 240
 241 }
 242
 243 static const struct pci_device_id hopper_pci_table[] = {
 244         MAKE_ENTRY(TWINHAN_TECHNOLOGIES, MANTIS_VP_3028_DVB_T, &vp3028_config,
 245                    NULL),
 246         { }
 247 };
 248
 249 MODULE_DEVICE_TABLE(pci, hopper_pci_table);
 250
 251 static struct pci_driver hopper_pci_driver = {
 252         .name           = DRIVER_NAME,
 253         .id_table       = hopper_pci_table,
 254         .probe          = hopper_pci_probe,
 255         .remove         = hopper_pci_remove,
 256 };
 257
 258 module_pci_driver(hopper_pci_driver);
 259
 260 MODULE_DESCRIPTION("HOPPER driver");
 261 MODULE_AUTHOR("Manu Abraham");
 262 MODULE_LICENSE("GPL");