1/*
2 * Copyright (c) 2004-2007 Marcus Overhagen <marcus@overhagen.de>
3 *
4 * Permission is hereby granted, free of charge, to any person
5 * obtaining a copy of this software and associated documentation
6 * files (the "Software"), to deal in the Software without restriction,
7 * including without limitation the rights to use, copy, modify,
8 * merge, publish, distribute, sublicense, and/or sell copies of
9 * the Software, and to permit persons to whom the Software is
10 * furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice and this permission notice shall be
13 * included in all copies or substantial portions of the Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
16 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
17 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
18 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
19 * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
20 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
21 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
22 * OTHER DEALINGS IN THE SOFTWARE.
23 */
24
25#include <KernelExport.h>
26#include <stdlib.h>
27#include <string.h>
28#include "dvb_interface.h"
29#include "cx23882.h"
30#include "cx23882_i2c.h"
31#include "cx22702.h"
32#include "dtt7592.h"
33#include "driver.h"
34#include "config.h"
35#include "util.h"
36
37#define TRACE_INTERFACE
38#ifdef TRACE_INTERFACE
39  #define TRACE dprintf
40#else
41  #define TRACE(a...)
42#endif
43
44
45#if 0
46static void
47dump_eeprom(cx23882_device *device)
48{
49	uint8 d[256+8];
50	uint8 adr;
51	uint8 *p;
52	int i;
53	status_t res;
54
55	adr = 0;
56	res = i2c_xfer(device->i2c_bus, I2C_ADDR_EEPROM, &adr, 1, d, sizeof(d));
57	if (res != B_OK) {
58		TRACE("i2c_read failed: %08lx\n", res);
59		return;
60	}
61	for (p = d, i = 0; i < ((int)sizeof(d) / 8); i++, p+= 8)
62		TRACE("EEPROM %02x: %02x %02x %02x %02x %02x %02x %02x %02x\n", i * 8, p[0], p[1], p[2], p[3], p[4], p[5], p[6], p[7]);
63
64}
65#endif
66
67
68status_t
69interface_attach(void **cookie, const pci_info *info)
70{
71	cx23882_device *device;
72	uint32 val;
73	int i;
74
75	TRACE("interface_attach\n");
76
77	device = malloc(sizeof(cx23882_device));
78	if (!device)
79		return B_NO_MEMORY;
80	*cookie = device;
81
82	// initialize cookie
83	memset(device, 0, sizeof(*device));
84	device->regs_area = -1;
85	device->dma_buf1_area = -1;
86	device->dma_buf2_area = -1;
87	device->capture_sem = -1;
88
89	device->pci_info = info;
90
91	// enable busmaster and memory mapped access, disable io port access
92	val = gPci->read_pci_config(device->pci_info->bus, device->pci_info->device, device->pci_info->function, PCI_command, 2);
93	val = PCI_PCICMD_BME | PCI_PCICMD_MSE | (val & ~PCI_PCICMD_IOS);
94	gPci->write_pci_config(device->pci_info->bus, device->pci_info->device, device->pci_info->function, PCI_command, 2, val);
95
96	// adjust PCI latency timer
97	val = gPci->read_pci_config(device->pci_info->bus, device->pci_info->device, device->pci_info->function, PCI_latency, 1);
98	TRACE("PCI latency is %02lx, changing to %02x\n", val, PCI_LATENCY);
99	gPci->write_pci_config(device->pci_info->bus, device->pci_info->device, device->pci_info->function, PCI_latency, 1, PCI_LATENCY);
100
101	// get IRQ
102	device->irq = gPci->read_pci_config(device->pci_info->bus, device->pci_info->device, device->pci_info->function, PCI_interrupt_line, 1);
103	if (device->irq == 0 || device->irq == 0xff) {
104		dprintf("cx23882: Error, no IRQ assigned\n");
105		goto err;
106	}
107	TRACE("IRQ %d\n", device->irq);
108
109	// map registers into memory
110	val = gPci->read_pci_config(device->pci_info->bus, device->pci_info->device, device->pci_info->function, 0x10, 4);
111	val &= PCI_address_memory_32_mask;
112	if (val == 0) {
113		dprintf("cx23882: Error, no memory space assigned\n");
114		goto err;
115	}
116	TRACE("hardware register address %p\n", (void *) val);
117	device->regs_area = map_mem(&device->regs, (void *)val, 16777216 /* 16 MB */, 0, "cx23882 registers");
118	if (device->regs_area < B_OK) {
119		dprintf("cx23882: Error, can't map hardware registers\n");
120		goto err;
121	}
122	TRACE("mapped registers to %p\n", device->regs);
123
124	device->capture_sem = create_sem(0, "cx23882 capture");
125
126	cx23882_reset(device);
127
128	if (i2c_init(device) < B_OK) {
129		dprintf("cx23882: Error, can't init I2C\n");
130	}
131
132
133	if (cx23882_init(device) < B_OK) {
134		dprintf("cx23882: Error, can't init hardware\n");
135	}
136
137
138	for (i = 0; i < 20; i++)
139		if (cx22702_init(device->i2c_bus) == B_OK)
140			break;
141	if (i == 20) {
142		TRACE("cx22702_init failed\n");
143		goto err;
144	}
145
146	// setup interrupt handler
147	if (install_io_interrupt_handler(device->irq, cx23882_int, device, 0) < B_OK) {
148		dprintf("cx23882: Error, can't install interrupt handler\n");
149		goto err;
150	}
151
152//	dump_eeprom(device);
153//	dtt7582_test(device->i2c_bus);
154
155	return B_OK;
156err:
157	free(cookie);
158	return B_ERROR;
159}
160
161
162void
163interface_detach(void *cookie)
164{
165	cx23882_device *device = cookie;
166
167	i2c_terminate(device);
168
169	if (cx23882_terminate(device) < B_OK) {
170	}
171
172  	remove_io_interrupt_handler(device->irq, cx23882_int, device);
173
174	delete_area(device->regs_area);
175
176	delete_sem(device->capture_sem);
177
178	TRACE("interface_detach\n");
179}
180
181
182static void
183interface_get_interface_info(dvb_interface_info_t *info)
184{
185	memset(info, 0, sizeof(*info));
186	info->version = 1;
187	info->flags = 0;
188	info->type = DVB_TYPE_DVB_T;
189	strcpy(info->name, "CX23882");
190	strcpy(info->info, "Hauppauge WinTV-NOVA-T model 928 driver, Copyright (c) 2005 Marcus Overhagen");
191}
192
193
194status_t
195interface_ioctl(void *cookie, uint32 op, void *arg, size_t len)
196{
197	cx23882_device *device = cookie;
198	status_t res;
199
200	switch (op) {
201		case DVB_GET_INTERFACE_INFO:
202		{
203			dvb_interface_info_t info;
204			interface_get_interface_info(&info);
205			if (user_memcpy(arg, &info, sizeof(info)) < B_OK)
206				return B_BAD_ADDRESS;
207			break;
208		}
209
210		case DVB_GET_FREQUENCY_INFO:
211		{
212			dvb_frequency_info_t info;
213			if ((res = cx22702_get_frequency_info(device->i2c_bus, &info)) < B_OK)
214				return res;
215			if (user_memcpy(arg, &info, sizeof(info)) < B_OK)
216				return B_BAD_ADDRESS;
217			break;
218		}
219
220		case DVB_START_CAPTURE:
221		{
222			return cx23882_start_capture(device);
223		}
224
225		case DVB_STOP_CAPTURE:
226		{
227			return cx23882_stop_capture(device);
228		}
229
230		case DVB_SET_TUNING_PARAMETERS:
231		{
232			dvb_tuning_parameters_t params;
233			if (user_memcpy(&params, arg, sizeof(params)) < B_OK)
234				return B_BAD_ADDRESS;
235			if ((res = cx22702_set_tuning_parameters(device->i2c_bus, &params.u.dvb_t)) < B_OK)
236				return res;
237			break;
238		}
239
240		case DVB_GET_TUNING_PARAMETERS:
241		{
242			dvb_tuning_parameters_t params;
243			if ((res = cx22702_get_tuning_parameters(device->i2c_bus, &params.u.dvb_t)) < B_OK)
244				return res;
245			if (user_memcpy(arg, &params, sizeof(params)) < B_OK)
246				return B_BAD_ADDRESS;
247			break;
248		}
249
250		case DVB_GET_STATUS:
251		{
252			dvb_status_t status;
253			if ((res = cx22702_get_status(device->i2c_bus, &status)) < B_OK)
254				return res;
255			if (user_memcpy(arg, &status, sizeof(status)) < B_OK)
256				return B_BAD_ADDRESS;
257			break;
258		}
259
260		case DVB_GET_SS:
261		{
262			uint32 value;
263			if ((res = cx22702_get_ss(device->i2c_bus, &value)) < B_OK)
264				return res;
265			if (user_memcpy(arg, &value, sizeof(value)) < B_OK)
266				return B_BAD_ADDRESS;
267			break;
268		}
269
270		case DVB_GET_BER:
271		{
272			uint32 value;
273			if ((res = cx22702_get_ber(device->i2c_bus, &value)) < B_OK)
274				return res;
275			if (user_memcpy(arg, &value, sizeof(value)) < B_OK)
276				return B_BAD_ADDRESS;
277			break;
278		}
279
280		case DVB_GET_SNR:
281		{
282			uint32 value;
283			if ((res = cx22702_get_snr(device->i2c_bus, &value)) < B_OK)
284				return res;
285			if (user_memcpy(arg, &value, sizeof(value)) < B_OK)
286				return B_BAD_ADDRESS;
287			break;
288		}
289
290		case DVB_GET_UPC:
291		{
292			uint32 value;
293			if ((res = cx22702_get_upc(device->i2c_bus, &value)) < B_OK)
294				return res;
295			if (user_memcpy(arg, &value, sizeof(value)) < B_OK)
296				return B_BAD_ADDRESS;
297			break;
298		}
299
300		case DVB_CAPTURE:
301		{
302			dvb_capture_t cap_data;
303			// wait for data ready interrupt, with 100 ms timeout (in case tuning failed, bad reception, etc)
304			if ((res = acquire_sem_etc(device->capture_sem, 1, B_CAN_INTERRUPT | B_RELATIVE_TIMEOUT, 100000)) < B_OK)
305				return res;
306			cap_data.data = device->capture_data;
307			cap_data.size = device->capture_size;
308			cap_data.end_time = device->capture_end_time;
309			if (user_memcpy(arg, &cap_data, sizeof(cap_data)) < B_OK)
310				return B_BAD_ADDRESS;
311			break;
312		}
313
314		default:
315		{
316			TRACE("interface_ioctl\n");
317			return B_BAD_VALUE;
318		}
319	}
320
321	return B_OK;
322}
323