1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0-or-later
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun Mantis PCI bridge driver
4*4882a593Smuzhiyun
5*4882a593Smuzhiyun Copyright (C) Manu Abraham (abraham.manu@gmail.com)
6*4882a593Smuzhiyun
7*4882a593Smuzhiyun */
8*4882a593Smuzhiyun
9*4882a593Smuzhiyun #include <linux/kernel.h>
10*4882a593Smuzhiyun #include <linux/i2c.h>
11*4882a593Smuzhiyun
12*4882a593Smuzhiyun #include <linux/signal.h>
13*4882a593Smuzhiyun #include <linux/sched.h>
14*4882a593Smuzhiyun #include <linux/interrupt.h>
15*4882a593Smuzhiyun #include <asm/io.h>
16*4882a593Smuzhiyun
17*4882a593Smuzhiyun #include <media/dmxdev.h>
18*4882a593Smuzhiyun #include <media/dvbdev.h>
19*4882a593Smuzhiyun #include <media/dvb_demux.h>
20*4882a593Smuzhiyun #include <media/dvb_frontend.h>
21*4882a593Smuzhiyun #include <media/dvb_net.h>
22*4882a593Smuzhiyun
23*4882a593Smuzhiyun #include "mantis_common.h"
24*4882a593Smuzhiyun #include "mantis_reg.h"
25*4882a593Smuzhiyun #include "mantis_ioc.h"
26*4882a593Smuzhiyun
read_eeprom_bytes(struct mantis_pci * mantis,u8 reg,u8 * data,u8 length)27*4882a593Smuzhiyun static int read_eeprom_bytes(struct mantis_pci *mantis, u8 reg, u8 *data, u8 length)
28*4882a593Smuzhiyun {
29*4882a593Smuzhiyun struct i2c_adapter *adapter = &mantis->adapter;
30*4882a593Smuzhiyun int err;
31*4882a593Smuzhiyun u8 buf = reg;
32*4882a593Smuzhiyun
33*4882a593Smuzhiyun struct i2c_msg msg[] = {
34*4882a593Smuzhiyun { .addr = 0x50, .flags = 0, .buf = &buf, .len = 1 },
35*4882a593Smuzhiyun { .addr = 0x50, .flags = I2C_M_RD, .buf = data, .len = length },
36*4882a593Smuzhiyun };
37*4882a593Smuzhiyun
38*4882a593Smuzhiyun err = i2c_transfer(adapter, msg, 2);
39*4882a593Smuzhiyun if (err < 0) {
40*4882a593Smuzhiyun dprintk(MANTIS_ERROR, 1, "ERROR: i2c read: < err=%i d0=0x%02x d1=0x%02x >",
41*4882a593Smuzhiyun err, data[0], data[1]);
42*4882a593Smuzhiyun
43*4882a593Smuzhiyun return err;
44*4882a593Smuzhiyun }
45*4882a593Smuzhiyun
46*4882a593Smuzhiyun return 0;
47*4882a593Smuzhiyun }
mantis_get_mac(struct mantis_pci * mantis)48*4882a593Smuzhiyun int mantis_get_mac(struct mantis_pci *mantis)
49*4882a593Smuzhiyun {
50*4882a593Smuzhiyun int err;
51*4882a593Smuzhiyun u8 mac_addr[6] = {0};
52*4882a593Smuzhiyun
53*4882a593Smuzhiyun err = read_eeprom_bytes(mantis, 0x08, mac_addr, 6);
54*4882a593Smuzhiyun if (err < 0) {
55*4882a593Smuzhiyun dprintk(MANTIS_ERROR, 1, "ERROR: Mantis EEPROM read error <%d>", err);
56*4882a593Smuzhiyun
57*4882a593Smuzhiyun return err;
58*4882a593Smuzhiyun }
59*4882a593Smuzhiyun
60*4882a593Smuzhiyun dprintk(MANTIS_ERROR, 0, " MAC Address=[%pM]\n", mac_addr);
61*4882a593Smuzhiyun
62*4882a593Smuzhiyun return 0;
63*4882a593Smuzhiyun }
64*4882a593Smuzhiyun EXPORT_SYMBOL_GPL(mantis_get_mac);
65*4882a593Smuzhiyun
66*4882a593Smuzhiyun /* Turn the given bit on or off. */
mantis_gpio_set_bits(struct mantis_pci * mantis,u32 bitpos,u8 value)67*4882a593Smuzhiyun void mantis_gpio_set_bits(struct mantis_pci *mantis, u32 bitpos, u8 value)
68*4882a593Smuzhiyun {
69*4882a593Smuzhiyun u32 cur;
70*4882a593Smuzhiyun
71*4882a593Smuzhiyun dprintk(MANTIS_DEBUG, 1, "Set Bit <%d> to <%d>", bitpos, value);
72*4882a593Smuzhiyun cur = mmread(MANTIS_GPIF_ADDR);
73*4882a593Smuzhiyun if (value)
74*4882a593Smuzhiyun mantis->gpio_status = cur | (1 << bitpos);
75*4882a593Smuzhiyun else
76*4882a593Smuzhiyun mantis->gpio_status = cur & (~(1 << bitpos));
77*4882a593Smuzhiyun
78*4882a593Smuzhiyun dprintk(MANTIS_DEBUG, 1, "GPIO Value <%02x>", mantis->gpio_status);
79*4882a593Smuzhiyun mmwrite(mantis->gpio_status, MANTIS_GPIF_ADDR);
80*4882a593Smuzhiyun mmwrite(0x00, MANTIS_GPIF_DOUT);
81*4882a593Smuzhiyun }
82*4882a593Smuzhiyun EXPORT_SYMBOL_GPL(mantis_gpio_set_bits);
83*4882a593Smuzhiyun
mantis_stream_control(struct mantis_pci * mantis,enum mantis_stream_control stream_ctl)84*4882a593Smuzhiyun int mantis_stream_control(struct mantis_pci *mantis, enum mantis_stream_control stream_ctl)
85*4882a593Smuzhiyun {
86*4882a593Smuzhiyun u32 reg;
87*4882a593Smuzhiyun
88*4882a593Smuzhiyun reg = mmread(MANTIS_CONTROL);
89*4882a593Smuzhiyun switch (stream_ctl) {
90*4882a593Smuzhiyun case STREAM_TO_HIF:
91*4882a593Smuzhiyun dprintk(MANTIS_DEBUG, 1, "Set stream to HIF");
92*4882a593Smuzhiyun reg &= 0xff - MANTIS_BYPASS;
93*4882a593Smuzhiyun mmwrite(reg, MANTIS_CONTROL);
94*4882a593Smuzhiyun reg |= MANTIS_BYPASS;
95*4882a593Smuzhiyun mmwrite(reg, MANTIS_CONTROL);
96*4882a593Smuzhiyun break;
97*4882a593Smuzhiyun
98*4882a593Smuzhiyun case STREAM_TO_CAM:
99*4882a593Smuzhiyun dprintk(MANTIS_DEBUG, 1, "Set stream to CAM");
100*4882a593Smuzhiyun reg |= MANTIS_BYPASS;
101*4882a593Smuzhiyun mmwrite(reg, MANTIS_CONTROL);
102*4882a593Smuzhiyun reg &= 0xff - MANTIS_BYPASS;
103*4882a593Smuzhiyun mmwrite(reg, MANTIS_CONTROL);
104*4882a593Smuzhiyun break;
105*4882a593Smuzhiyun default:
106*4882a593Smuzhiyun dprintk(MANTIS_ERROR, 1, "Unknown MODE <%02x>", stream_ctl);
107*4882a593Smuzhiyun return -1;
108*4882a593Smuzhiyun }
109*4882a593Smuzhiyun
110*4882a593Smuzhiyun return 0;
111*4882a593Smuzhiyun }
112*4882a593Smuzhiyun EXPORT_SYMBOL_GPL(mantis_stream_control);
113