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path: root/drivers/tty/serial/crisv10.c
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Diffstat (limited to 'drivers/tty/serial/crisv10.c')
-rw-r--r--drivers/tty/serial/crisv10.c106
1 files changed, 14 insertions, 92 deletions
diff --git a/drivers/tty/serial/crisv10.c b/drivers/tty/serial/crisv10.c
index 0c1825b0b..3e4470af5 100644
--- a/drivers/tty/serial/crisv10.c
+++ b/drivers/tty/serial/crisv10.c
@@ -56,10 +56,6 @@ static char *serial_version = "$Revision: 1.25 $";
#error "RX_TIMEOUT_TICKS == 0 not allowed, use 1"
#endif
-#if defined(CONFIG_ETRAX_RS485_ON_PA) && defined(CONFIG_ETRAX_RS485_ON_PORT_G)
-#error "Disable either CONFIG_ETRAX_RS485_ON_PA or CONFIG_ETRAX_RS485_ON_PORT_G"
-#endif
-
/*
* All of the compatibilty code so we can compile serial.c against
* older kernels is hidden in serial_compat.h
@@ -455,30 +451,6 @@ static struct e100_serial rs_table[] = {
static struct fast_timer fast_timers[NR_PORTS];
#endif
-#ifdef CONFIG_ETRAX_SERIAL_PROC_ENTRY
-#define PROCSTAT(x) x
-struct ser_statistics_type {
- int overrun_cnt;
- int early_errors_cnt;
- int ser_ints_ok_cnt;
- int errors_cnt;
- unsigned long int processing_flip;
- unsigned long processing_flip_still_room;
- unsigned long int timeout_flush_cnt;
- int rx_dma_ints;
- int tx_dma_ints;
- int rx_tot;
- int tx_tot;
-};
-
-static struct ser_statistics_type ser_stat[NR_PORTS];
-
-#else
-
-#define PROCSTAT(x)
-
-#endif /* CONFIG_ETRAX_SERIAL_PROC_ENTRY */
-
/* RS-485 */
#if defined(CONFIG_ETRAX_RS485)
#ifdef CONFIG_ETRAX_FAST_TIMER
@@ -487,9 +459,6 @@ static struct fast_timer fast_timers_rs485[NR_PORTS];
#if defined(CONFIG_ETRAX_RS485_ON_PA)
static int rs485_pa_bit = CONFIG_ETRAX_RS485_ON_PA_BIT;
#endif
-#if defined(CONFIG_ETRAX_RS485_ON_PORT_G)
-static int rs485_port_g_bit = CONFIG_ETRAX_RS485_ON_PORT_G_BIT;
-#endif
#endif
/* Info and macros needed for each ports extra control/status signals. */
@@ -739,10 +708,10 @@ static unsigned char dummy_ser[NR_PORTS] = {0xFF, 0xFF, 0xFF,0xFF};
defined(CONFIG_ETRAX_SER1_DTR_RI_DSR_CD_MIXED) || \
defined(CONFIG_ETRAX_SER2_DTR_RI_DSR_CD_MIXED) || \
defined(CONFIG_ETRAX_SER3_DTR_RI_DSR_CD_MIXED)
-#define CONFIG_ETRAX_SERX_DTR_RI_DSR_CD_MIXED
+#define ETRAX_SERX_DTR_RI_DSR_CD_MIXED
#endif
-#ifdef CONFIG_ETRAX_SERX_DTR_RI_DSR_CD_MIXED
+#ifdef ETRAX_SERX_DTR_RI_DSR_CD_MIXED
/* The pins can be mixed on PA and PB */
#define CONTROL_PINS_PORT_NOT_USED(line) \
&dummy_ser[line], &dummy_ser[line], \
@@ -835,7 +804,7 @@ static const struct control_pins e100_modem_pins[NR_PORTS] =
#endif
}
};
-#else /* CONFIG_ETRAX_SERX_DTR_RI_DSR_CD_MIXED */
+#else /* ETRAX_SERX_DTR_RI_DSR_CD_MIXED */
/* All pins are on either PA or PB for each serial port */
#define CONTROL_PINS_PORT_NOT_USED(line) \
@@ -917,7 +886,7 @@ static const struct control_pins e100_modem_pins[NR_PORTS] =
#endif
}
};
-#endif /* !CONFIG_ETRAX_SERX_DTR_RI_DSR_CD_MIXED */
+#endif /* !ETRAX_SERX_DTR_RI_DSR_CD_MIXED */
#define E100_RTS_MASK 0x20
#define E100_CTS_MASK 0x40
@@ -1367,16 +1336,6 @@ e100_enable_rs485(struct tty_struct *tty, struct serial_rs485 *r)
#if defined(CONFIG_ETRAX_RS485_ON_PA)
*R_PORT_PA_DATA = port_pa_data_shadow |= (1 << rs485_pa_bit);
#endif
-#if defined(CONFIG_ETRAX_RS485_ON_PORT_G)
- REG_SHADOW_SET(R_PORT_G_DATA, port_g_data_shadow,
- rs485_port_g_bit, 1);
-#endif
-#if defined(CONFIG_ETRAX_RS485_LTC1387)
- REG_SHADOW_SET(R_PORT_G_DATA, port_g_data_shadow,
- CONFIG_ETRAX_RS485_LTC1387_DXEN_PORT_G_BIT, 1);
- REG_SHADOW_SET(R_PORT_G_DATA, port_g_data_shadow,
- CONFIG_ETRAX_RS485_LTC1387_RXEN_PORT_G_BIT, 1);
-#endif
info->rs485 = *r;
@@ -1676,7 +1635,8 @@ alloc_recv_buffer(unsigned int size)
{
struct etrax_recv_buffer *buffer;
- if (!(buffer = kmalloc(sizeof *buffer + size, GFP_ATOMIC)))
+ buffer = kmalloc(sizeof *buffer + size, GFP_ATOMIC);
+ if (!buffer)
return NULL;
buffer->next = NULL;
@@ -1712,7 +1672,8 @@ add_char_and_flag(struct e100_serial *info, unsigned char data, unsigned char fl
{
struct etrax_recv_buffer *buffer;
if (info->uses_dma_in) {
- if (!(buffer = alloc_recv_buffer(4)))
+ buffer = alloc_recv_buffer(4);
+ if (!buffer)
return 0;
buffer->length = 1;
@@ -1750,7 +1711,8 @@ static unsigned int handle_descr_data(struct e100_serial *info,
append_recv_buffer(info, buffer);
- if (!(buffer = alloc_recv_buffer(SERIAL_DESCR_BUF_SIZE)))
+ buffer = alloc_recv_buffer(SERIAL_DESCR_BUF_SIZE);
+ if (!buffer)
panic("%s: Failed to allocate memory for receive buffer!\n", __func__);
descr->buf = virt_to_phys(buffer->buffer);
@@ -1841,7 +1803,6 @@ static void receive_chars_dma(struct e100_serial *info)
*/
unsigned char data = info->ioport[REG_DATA];
- PROCSTAT(ser_stat[info->line].errors_cnt++);
DEBUG_LOG(info->line, "#dERR: s d 0x%04X\n",
((rstat & SER_ERROR_MASK) << 8) | data);
@@ -1867,7 +1828,8 @@ static int start_recv_dma(struct e100_serial *info)
/* Set up the receiving descriptors */
for (i = 0; i < SERIAL_RECV_DESCRIPTORS; i++) {
- if (!(buffer = alloc_recv_buffer(SERIAL_DESCR_BUF_SIZE)))
+ buffer = alloc_recv_buffer(SERIAL_DESCR_BUF_SIZE);
+ if (!buffer)
panic("%s: Failed to allocate memory for receive buffer!\n", __func__);
descr[i].ctrl = d_int;
@@ -1943,7 +1905,6 @@ tr_interrupt(int irq, void *dev_id)
/* Read jiffies_usec first,
* we want this time to be as late as possible
*/
- PROCSTAT(ser_stat[info->line].tx_dma_ints++);
info->last_tx_active_usec = GET_JIFFIES_USEC();
info->last_tx_active = jiffies;
transmit_chars_dma(info);
@@ -2022,7 +1983,6 @@ static int force_eop_if_needed(struct e100_serial *info)
*/
if (!info->forced_eop) {
info->forced_eop = 1;
- PROCSTAT(ser_stat[info->line].timeout_flush_cnt++);
TIMERD(DEBUG_LOG(info->line, "timeout EOP %i\n", info->line));
FORCE_EOP(info);
}
@@ -2374,7 +2334,6 @@ static void handle_ser_rx_interrupt(struct e100_serial *info)
DEBUG_LOG(info->line, "#iERR s d %04X\n",
((rstat & SER_ERROR_MASK) << 8) | data);
}
- PROCSTAT(ser_stat[info->line].early_errors_cnt++);
} else { /* It was a valid byte, now let the DMA do the rest */
unsigned long curr_time_u = GET_JIFFIES_USEC();
unsigned long curr_time = jiffies;
@@ -2407,7 +2366,6 @@ static void handle_ser_rx_interrupt(struct e100_serial *info)
DINTR2(DEBUG_LOG(info->line, "ser_rx OK %d\n", info->line));
info->break_detected_cnt = 0;
- PROCSTAT(ser_stat[info->line].ser_ints_ok_cnt++);
}
/* Restarting the DMA never hurts */
*info->icmdadr = IO_STATE(R_DMA_CH6_CMD, cmd, restart);
@@ -2867,19 +2825,6 @@ change_speed(struct e100_serial *info)
*R_SERIAL_PRESCALE = divisor;
info->baud = SERIAL_PRESCALE_BASE/divisor;
}
-#ifdef CONFIG_ETRAX_EXTERN_PB6CLK_ENABLED
- else if ((info->baud_base==CONFIG_ETRAX_EXTERN_PB6CLK_FREQ/8 &&
- info->custom_divisor == 1) ||
- (info->baud_base==CONFIG_ETRAX_EXTERN_PB6CLK_FREQ &&
- info->custom_divisor == 8)) {
- /* ext_clk selected */
- alt_source =
- IO_STATE(R_ALT_SER_BAUDRATE, ser0_rec, extern) |
- IO_STATE(R_ALT_SER_BAUDRATE, ser0_tr, extern);
- DBAUD(printk("using external baudrate: %lu\n", CONFIG_ETRAX_EXTERN_PB6CLK_FREQ/8));
- info->baud = CONFIG_ETRAX_EXTERN_PB6CLK_FREQ/8;
- }
-#endif
else
{
/* Bad baudbase, we don't support using timer0
@@ -3216,9 +3161,7 @@ rs_throttle(struct tty_struct * tty)
{
struct e100_serial *info = (struct e100_serial *)tty->driver_data;
#ifdef SERIAL_DEBUG_THROTTLE
- char buf[64];
-
- printk("throttle %s: %lu....\n", tty_name(tty, buf),
+ printk("throttle %s: %lu....\n", tty_name(tty),
(unsigned long)tty->ldisc.chars_in_buffer(tty));
#endif
DFLOW(DEBUG_LOG(info->line,"rs_throttle %lu\n", tty->ldisc.chars_in_buffer(tty)));
@@ -3238,9 +3181,7 @@ rs_unthrottle(struct tty_struct * tty)
{
struct e100_serial *info = (struct e100_serial *)tty->driver_data;
#ifdef SERIAL_DEBUG_THROTTLE
- char buf[64];
-
- printk("unthrottle %s: %lu....\n", tty_name(tty, buf),
+ printk("unthrottle %s: %lu....\n", tty_name(tty),
(unsigned long)tty->ldisc.chars_in_buffer(tty));
#endif
DFLOW(DEBUG_LOG(info->line,"rs_unthrottle ldisc %d\n", tty->ldisc.chars_in_buffer(tty)));
@@ -3725,16 +3666,6 @@ rs_close(struct tty_struct *tty, struct file * filp)
#if defined(CONFIG_ETRAX_RS485_ON_PA)
*R_PORT_PA_DATA = port_pa_data_shadow &= ~(1 << rs485_pa_bit);
#endif
-#if defined(CONFIG_ETRAX_RS485_ON_PORT_G)
- REG_SHADOW_SET(R_PORT_G_DATA, port_g_data_shadow,
- rs485_port_g_bit, 0);
-#endif
-#if defined(CONFIG_ETRAX_RS485_LTC1387)
- REG_SHADOW_SET(R_PORT_G_DATA, port_g_data_shadow,
- CONFIG_ETRAX_RS485_LTC1387_DXEN_PORT_G_BIT, 0);
- REG_SHADOW_SET(R_PORT_G_DATA, port_g_data_shadow,
- CONFIG_ETRAX_RS485_LTC1387_RXEN_PORT_G_BIT, 0);
-#endif
}
#endif
@@ -4263,15 +4194,6 @@ static int __init rs_init(void)
return -EBUSY;
}
#endif
-#if defined(CONFIG_ETRAX_RS485_ON_PORT_G)
- if (cris_io_interface_allocate_pins(if_serial_0, 'g', rs485_pa_bit,
- rs485_port_g_bit)) {
- printk(KERN_ERR "ETRAX100LX serial: Could not allocate "
- "RS485 pin\n");
- put_tty_driver(driver);
- return -EBUSY;
- }
-#endif
#endif
/* Initialize the tty_driver structure */
generated by cgit v1.2.3-54-g00ecf (git 2.45.2) at 2024-11-17 17:00:11 +0000