diff options
Diffstat (limited to 'drivers/media/dvb/mantis/mantis_uart.c')
| -rw-r--r-- | drivers/media/dvb/mantis/mantis_uart.c | 188 |
1 files changed, 0 insertions, 188 deletions
diff --git a/drivers/media/dvb/mantis/mantis_uart.c b/drivers/media/dvb/mantis/mantis_uart.c deleted file mode 100644 index 18340dafa426..000000000000 --- a/drivers/media/dvb/mantis/mantis_uart.c +++ /dev/null @@ -1,188 +0,0 @@ -/* - 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/spinlock.h> -#include <asm/io.h> - -#include <linux/signal.h> -#include <linux/sched.h> -#include <linux/interrupt.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_uart.h" - -struct mantis_uart_params { - enum mantis_baud baud_rate; - enum mantis_parity parity; -}; - -static struct { - char string[7]; -} rates[5] = { - { "9600" }, - { "19200" }, - { "38400" }, - { "57600" }, - { "115200" } -}; - -static struct { - char string[5]; -} parity[3] = { - { "NONE" }, - { "ODD" }, - { "EVEN" } -}; - -#define UART_MAX_BUF 16 - -int mantis_uart_read(struct mantis_pci *mantis, u8 *data) -{ - struct mantis_hwconfig *config = mantis->hwconfig; - u32 stat = 0, i; - - /* get data */ - for (i = 0; i < (config->bytes + 1); i++) { - - stat = mmread(MANTIS_UART_STAT); - - if (stat & MANTIS_UART_RXFIFO_FULL) { - dprintk(MANTIS_ERROR, 1, "RX Fifo FULL"); - } - data[i] = mmread(MANTIS_UART_RXD) & 0x3f; - - dprintk(MANTIS_DEBUG, 1, "Reading ... <%02x>", data[i] & 0x3f); - - if (data[i] & (1 << 7)) { - dprintk(MANTIS_ERROR, 1, "UART framing error"); - return -EINVAL; - } - if (data[i] & (1 << 6)) { - dprintk(MANTIS_ERROR, 1, "UART parity error"); - return -EINVAL; - } - } - - return 0; -} - -static void mantis_uart_work(struct work_struct *work) -{ - struct mantis_pci *mantis = container_of(work, struct mantis_pci, uart_work); - struct mantis_hwconfig *config = mantis->hwconfig; - u8 buf[16]; - int i; - - mantis_uart_read(mantis, buf); - - for (i = 0; i < (config->bytes + 1); i++) - dprintk(MANTIS_INFO, 1, "UART BUF:%d <%02x> ", i, buf[i]); - - dprintk(MANTIS_DEBUG, 0, "\n"); -} - -static int mantis_uart_setup(struct mantis_pci *mantis, - struct mantis_uart_params *params) -{ - u32 reg; - - mmwrite((mmread(MANTIS_UART_CTL) | (params->parity & 0x3)), MANTIS_UART_CTL); - - reg = mmread(MANTIS_UART_BAUD); - - switch (params->baud_rate) { - case MANTIS_BAUD_9600: - reg |= 0xd8; - break; - case MANTIS_BAUD_19200: - reg |= 0x6c; - break; - case MANTIS_BAUD_38400: - reg |= 0x36; - break; - case MANTIS_BAUD_57600: - reg |= 0x23; - break; - case MANTIS_BAUD_115200: - reg |= 0x11; - break; - default: - return -EINVAL; - } - - mmwrite(reg, MANTIS_UART_BAUD); - - return 0; -} - -int mantis_uart_init(struct mantis_pci *mantis) -{ - struct mantis_hwconfig *config = mantis->hwconfig; - struct mantis_uart_params params; - - /* default parity: */ - params.baud_rate = config->baud_rate; - params.parity = config->parity; - dprintk(MANTIS_INFO, 1, "Initializing UART @ %sbps parity:%s", - rates[params.baud_rate].string, - parity[params.parity].string); - - init_waitqueue_head(&mantis->uart_wq); - spin_lock_init(&mantis->uart_lock); - - INIT_WORK(&mantis->uart_work, mantis_uart_work); - - /* disable interrupt */ - mmwrite(mmread(MANTIS_UART_CTL) & 0xffef, MANTIS_UART_CTL); - - mantis_uart_setup(mantis, ¶ms); - - /* default 1 byte */ - mmwrite((mmread(MANTIS_UART_BAUD) | (config->bytes << 8)), MANTIS_UART_BAUD); - - /* flush buffer */ - mmwrite((mmread(MANTIS_UART_CTL) | MANTIS_UART_RXFLUSH), MANTIS_UART_CTL); - - /* enable interrupt */ - mmwrite(mmread(MANTIS_INT_MASK) | 0x800, MANTIS_INT_MASK); - mmwrite(mmread(MANTIS_UART_CTL) | MANTIS_UART_RXINT, MANTIS_UART_CTL); - - schedule_work(&mantis->uart_work); - dprintk(MANTIS_DEBUG, 1, "UART successfully initialized"); - - return 0; -} -EXPORT_SYMBOL_GPL(mantis_uart_init); - -void mantis_uart_exit(struct mantis_pci *mantis) -{ - /* disable interrupt */ - mmwrite(mmread(MANTIS_UART_CTL) & 0xffef, MANTIS_UART_CTL); - flush_work_sync(&mantis->uart_work); -} -EXPORT_SYMBOL_GPL(mantis_uart_exit); |