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Linux/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 "dmxdev.h"
 30 #include "dvbdev.h"
 31 #include "dvb_demux.h"
 32 #include "dvb_frontend.h"
 33 #include "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 == NULL)) {
 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 = 0;
165 
166         mantis = kzalloc(sizeof(struct mantis_pci), GFP_KERNEL);
167         if (mantis == NULL) {
168                 printk(KERN_ERR "%s ERROR: Out of memory\n", __func__);
169                 err = -ENOMEM;
170                 goto fail0;
171         }
172 
173         drvdata                 = (void *)pci_id->driver_data;
174         mantis->num             = devs;
175         mantis->verbose         = verbose;
176         mantis->pdev            = pdev;
177         config                  = drvdata->hwconfig;
178         config->irq_handler     = &hopper_irq_handler;
179         mantis->hwconfig        = config;
180         mantis->rc_map_name     = drvdata->rc_map_name;
181 
182         spin_lock_init(&mantis->intmask_lock);
183 
184         err = mantis_pci_init(mantis);
185         if (err) {
186                 dprintk(MANTIS_ERROR, 1, "ERROR: Mantis PCI initialization failed <%d>", err);
187                 goto fail1;
188         }
189 
190         err = mantis_stream_control(mantis, STREAM_TO_HIF);
191         if (err < 0) {
192                 dprintk(MANTIS_ERROR, 1, "ERROR: Mantis stream control failed <%d>", err);
193                 goto fail1;
194         }
195 
196         err = mantis_i2c_init(mantis);
197         if (err < 0) {
198                 dprintk(MANTIS_ERROR, 1, "ERROR: Mantis I2C initialization failed <%d>", err);
199                 goto fail2;
200         }
201 
202         err = mantis_get_mac(mantis);
203         if (err < 0) {
204                 dprintk(MANTIS_ERROR, 1, "ERROR: Mantis MAC address read failed <%d>", err);
205                 goto fail2;
206         }
207 
208         err = mantis_dma_init(mantis);
209         if (err < 0) {
210                 dprintk(MANTIS_ERROR, 1, "ERROR: Mantis DMA initialization failed <%d>", err);
211                 goto fail3;
212         }
213 
214         err = mantis_dvb_init(mantis);
215         if (err < 0) {
216                 dprintk(MANTIS_ERROR, 1, "ERROR: Mantis DVB initialization failed <%d>", err);
217                 goto fail4;
218         }
219         devs++;
220 
221         return err;
222 
223 fail4:
224         dprintk(MANTIS_ERROR, 1, "ERROR: Mantis DMA exit! <%d>", err);
225         mantis_dma_exit(mantis);
226 
227 fail3:
228         dprintk(MANTIS_ERROR, 1, "ERROR: Mantis I2C exit! <%d>", err);
229         mantis_i2c_exit(mantis);
230 
231 fail2:
232         dprintk(MANTIS_ERROR, 1, "ERROR: Mantis PCI exit! <%d>", err);
233         mantis_pci_exit(mantis);
234 
235 fail1:
236         dprintk(MANTIS_ERROR, 1, "ERROR: Mantis free! <%d>", err);
237         kfree(mantis);
238 
239 fail0:
240         return err;
241 }
242 
243 static void hopper_pci_remove(struct pci_dev *pdev)
244 {
245         struct mantis_pci *mantis = pci_get_drvdata(pdev);
246 
247         if (mantis) {
248                 mantis_dvb_exit(mantis);
249                 mantis_dma_exit(mantis);
250                 mantis_i2c_exit(mantis);
251                 mantis_pci_exit(mantis);
252                 kfree(mantis);
253         }
254         return;
255 
256 }
257 
258 static struct pci_device_id hopper_pci_table[] = {
259         MAKE_ENTRY(TWINHAN_TECHNOLOGIES, MANTIS_VP_3028_DVB_T, &vp3028_config,
260                    NULL),
261         { }
262 };
263 
264 MODULE_DEVICE_TABLE(pci, hopper_pci_table);
265 
266 static struct pci_driver hopper_pci_driver = {
267         .name           = DRIVER_NAME,
268         .id_table       = hopper_pci_table,
269         .probe          = hopper_pci_probe,
270         .remove         = hopper_pci_remove,
271 };
272 
273 module_pci_driver(hopper_pci_driver);
274 
275 MODULE_DESCRIPTION("HOPPER driver");
276 MODULE_AUTHOR("Manu Abraham");
277 MODULE_LICENSE("GPL");
278 

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