| b.liu | e958203 | 2025-04-17 19:18:16 +0800 | [diff] [blame^] | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
| 2 | /* |
| 3 | Mantis PCI bridge driver |
| 4 | |
| 5 | Copyright (C) Manu Abraham (abraham.manu@gmail.com) |
| 6 | |
| 7 | */ |
| 8 | |
| 9 | #include <linux/kernel.h> |
| 10 | #include <linux/i2c.h> |
| 11 | |
| 12 | #include <linux/signal.h> |
| 13 | #include <linux/sched.h> |
| 14 | #include <linux/interrupt.h> |
| 15 | #include <asm/io.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 "mantis_reg.h" |
| 25 | #include "mantis_ioc.h" |
| 26 | |
| 27 | static int read_eeprom_bytes(struct mantis_pci *mantis, u8 reg, u8 *data, u8 length) |
| 28 | { |
| 29 | struct i2c_adapter *adapter = &mantis->adapter; |
| 30 | int err; |
| 31 | u8 buf = reg; |
| 32 | |
| 33 | struct i2c_msg msg[] = { |
| 34 | { .addr = 0x50, .flags = 0, .buf = &buf, .len = 1 }, |
| 35 | { .addr = 0x50, .flags = I2C_M_RD, .buf = data, .len = length }, |
| 36 | }; |
| 37 | |
| 38 | err = i2c_transfer(adapter, msg, 2); |
| 39 | if (err < 0) { |
| 40 | dprintk(MANTIS_ERROR, 1, "ERROR: i2c read: < err=%i d0=0x%02x d1=0x%02x >", |
| 41 | err, data[0], data[1]); |
| 42 | |
| 43 | return err; |
| 44 | } |
| 45 | |
| 46 | return 0; |
| 47 | } |
| 48 | int mantis_get_mac(struct mantis_pci *mantis) |
| 49 | { |
| 50 | int err; |
| 51 | u8 mac_addr[6] = {0}; |
| 52 | |
| 53 | err = read_eeprom_bytes(mantis, 0x08, mac_addr, 6); |
| 54 | if (err < 0) { |
| 55 | dprintk(MANTIS_ERROR, 1, "ERROR: Mantis EEPROM read error <%d>", err); |
| 56 | |
| 57 | return err; |
| 58 | } |
| 59 | |
| 60 | dprintk(MANTIS_ERROR, 0, " MAC Address=[%pM]\n", mac_addr); |
| 61 | |
| 62 | return 0; |
| 63 | } |
| 64 | EXPORT_SYMBOL_GPL(mantis_get_mac); |
| 65 | |
| 66 | /* Turn the given bit on or off. */ |
| 67 | void mantis_gpio_set_bits(struct mantis_pci *mantis, u32 bitpos, u8 value) |
| 68 | { |
| 69 | u32 cur; |
| 70 | |
| 71 | dprintk(MANTIS_DEBUG, 1, "Set Bit <%d> to <%d>", bitpos, value); |
| 72 | cur = mmread(MANTIS_GPIF_ADDR); |
| 73 | if (value) |
| 74 | mantis->gpio_status = cur | (1 << bitpos); |
| 75 | else |
| 76 | mantis->gpio_status = cur & (~(1 << bitpos)); |
| 77 | |
| 78 | dprintk(MANTIS_DEBUG, 1, "GPIO Value <%02x>", mantis->gpio_status); |
| 79 | mmwrite(mantis->gpio_status, MANTIS_GPIF_ADDR); |
| 80 | mmwrite(0x00, MANTIS_GPIF_DOUT); |
| 81 | } |
| 82 | EXPORT_SYMBOL_GPL(mantis_gpio_set_bits); |
| 83 | |
| 84 | int mantis_stream_control(struct mantis_pci *mantis, enum mantis_stream_control stream_ctl) |
| 85 | { |
| 86 | u32 reg; |
| 87 | |
| 88 | reg = mmread(MANTIS_CONTROL); |
| 89 | switch (stream_ctl) { |
| 90 | case STREAM_TO_HIF: |
| 91 | dprintk(MANTIS_DEBUG, 1, "Set stream to HIF"); |
| 92 | reg &= 0xff - MANTIS_BYPASS; |
| 93 | mmwrite(reg, MANTIS_CONTROL); |
| 94 | reg |= MANTIS_BYPASS; |
| 95 | mmwrite(reg, MANTIS_CONTROL); |
| 96 | break; |
| 97 | |
| 98 | case STREAM_TO_CAM: |
| 99 | dprintk(MANTIS_DEBUG, 1, "Set stream to CAM"); |
| 100 | reg |= MANTIS_BYPASS; |
| 101 | mmwrite(reg, MANTIS_CONTROL); |
| 102 | reg &= 0xff - MANTIS_BYPASS; |
| 103 | mmwrite(reg, MANTIS_CONTROL); |
| 104 | break; |
| 105 | default: |
| 106 | dprintk(MANTIS_ERROR, 1, "Unknown MODE <%02x>", stream_ctl); |
| 107 | return -1; |
| 108 | } |
| 109 | |
| 110 | return 0; |
| 111 | } |
| 112 | EXPORT_SYMBOL_GPL(mantis_stream_control); |