diff options
Diffstat (limited to 'drivers/media/pci/mantis/mantis_ioc.c')
| -rw-r--r-- | drivers/media/pci/mantis/mantis_ioc.c | 124 |
1 files changed, 124 insertions, 0 deletions
diff --git a/drivers/media/pci/mantis/mantis_ioc.c b/drivers/media/pci/mantis/mantis_ioc.c new file mode 100644 index 000000000000..24fcdc63d6d5 --- /dev/null +++ b/drivers/media/pci/mantis/mantis_ioc.c @@ -0,0 +1,124 @@ +/* + Mantis PCI bridge driver + + Copyright (C) Manu Abraham (abraham.manu@gmail.com) + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. +*/ + +#include <linux/kernel.h> +#include <linux/i2c.h> + +#include <linux/signal.h> +#include <linux/sched.h> +#include <linux/interrupt.h> +#include <asm/io.h> + +#include "dmxdev.h" +#include "dvbdev.h" +#include "dvb_demux.h" +#include "dvb_frontend.h" +#include "dvb_net.h" + +#include "mantis_common.h" +#include "mantis_reg.h" +#include "mantis_ioc.h" + +static int read_eeprom_bytes(struct mantis_pci *mantis, u8 reg, u8 *data, u8 length) +{ + struct i2c_adapter *adapter = &mantis->adapter; + int err; + u8 buf = reg; + + struct i2c_msg msg[] = { + { .addr = 0x50, .flags = 0, .buf = &buf, .len = 1 }, + { .addr = 0x50, .flags = I2C_M_RD, .buf = data, .len = length }, + }; + + err = i2c_transfer(adapter, msg, 2); + if (err < 0) { + dprintk(MANTIS_ERROR, 1, "ERROR: i2c read: < err=%i d0=0x%02x d1=0x%02x >", + err, data[0], data[1]); + + return err; + } + + return 0; +} +int mantis_get_mac(struct mantis_pci *mantis) +{ + int err; + u8 mac_addr[6] = {0}; + + err = read_eeprom_bytes(mantis, 0x08, mac_addr, 6); + if (err < 0) { + dprintk(MANTIS_ERROR, 1, "ERROR: Mantis EEPROM read error <%d>", err); + + return err; + } + + dprintk(MANTIS_ERROR, 0, " MAC Address=[%pM]\n", mac_addr); + + return 0; +} +EXPORT_SYMBOL_GPL(mantis_get_mac); + +/* Turn the given bit on or off. */ +void mantis_gpio_set_bits(struct mantis_pci *mantis, u32 bitpos, u8 value) +{ + u32 cur; + + dprintk(MANTIS_DEBUG, 1, "Set Bit <%d> to <%d>", bitpos, value); + cur = mmread(MANTIS_GPIF_ADDR); + if (value) + mantis->gpio_status = cur | (1 << bitpos); + else + mantis->gpio_status = cur & (~(1 << bitpos)); + + dprintk(MANTIS_DEBUG, 1, "GPIO Value <%02x>", mantis->gpio_status); + mmwrite(mantis->gpio_status, MANTIS_GPIF_ADDR); + mmwrite(0x00, MANTIS_GPIF_DOUT); +} +EXPORT_SYMBOL_GPL(mantis_gpio_set_bits); + +int mantis_stream_control(struct mantis_pci *mantis, enum mantis_stream_control stream_ctl) +{ + u32 reg; + + reg = mmread(MANTIS_CONTROL); + switch (stream_ctl) { + case STREAM_TO_HIF: + dprintk(MANTIS_DEBUG, 1, "Set stream to HIF"); + reg &= 0xff - MANTIS_BYPASS; + mmwrite(reg, MANTIS_CONTROL); + reg |= MANTIS_BYPASS; + mmwrite(reg, MANTIS_CONTROL); + break; + + case STREAM_TO_CAM: + dprintk(MANTIS_DEBUG, 1, "Set stream to CAM"); + reg |= MANTIS_BYPASS; + mmwrite(reg, MANTIS_CONTROL); + reg &= 0xff - MANTIS_BYPASS; + mmwrite(reg, MANTIS_CONTROL); + break; + default: + dprintk(MANTIS_ERROR, 1, "Unknown MODE <%02x>", stream_ctl); + return -1; + } + + return 0; +} +EXPORT_SYMBOL_GPL(mantis_stream_control); |