Signed-off-by: Guenter Roeck <[email protected]>
---
drivers/tty/serial/crisv32.c | 1178 ++++++++++++++++++++----------------------
1 file changed, 567 insertions(+), 611 deletions(-)
diff --git a/drivers/tty/serial/crisv32.c b/drivers/tty/serial/crisv32.c
index a69f131..fa2ab5b 100644
--- a/drivers/tty/serial/crisv32.c
+++ b/drivers/tty/serial/crisv32.c
@@ -1,4 +1,4 @@
-/* $Id: crisv32.c,v 1.109 2010-07-09 15:00:44 jespern Exp $
+/* crisv32.c 1.109 2010-07-09 15:00:44 jespern
*
* Serial port driver for the ETRAX FS chip
*
@@ -21,9 +21,9 @@
#include <linux/slab.h>
#include <linux/tty_flip.h>
-#include <asm/io.h>
+#include <linux/io.h>
#include <asm/irq.h>
-#include <asm/uaccess.h>
+#include <linux/uaccess.h>
#include <dma.h>
#include <arch/system.h>
@@ -36,7 +36,7 @@
#include <hwregs/intr_vect_defs.h>
#include <hwregs/reg_map.h>
-#define UART_NR CONFIG_ETRAX_SERIAL_PORTS + 1 /* Ports + dummy port */
+#define UART_NR (CONFIG_ETRAX_SERIAL_PORTS + 1) /* Ports + dummy port */
#define SERIAL_RECV_DESCRIPTORS 8
/* We only buffer 255 characters here, no need for more tx descriptors. */
@@ -45,13 +45,13 @@
/* Kept for experimental purposes. */
#define SERIAL_DESCR_BUF_SIZE 256
#define regi_NULL 0
-#define DMA_WAIT_UNTIL_RESET(inst) \
- do { \
- reg_dma_rw_stat r; \
- do { \
- r = REG_RD(dma, (inst), rw_stat); \
- } while (r.mode != regk_dma_rst); \
- } while (0)
+#define DMA_WAIT_UNTIL_RESET(inst) \
+ do { \
+ reg_dma_rw_stat r; \
+ do { \
+ r = REG_RD(dma, (inst), rw_stat); \
+ } while (r.mode != regk_dma_rst); \
+ } while (0)
#define __DMA(ch) regi_dma##ch
#define DMA(ch) __DMA(ch)
@@ -60,55 +60,57 @@
/* Macro to set up control lines for a port. */
#define SETUP_PINS(port) \
if (serial_cris_ports[port].used) { \
- if (strcmp(CONFIG_ETRAX_SER##port##_DTR_BIT, "")) \
- crisv32_io_get_name(&serial_cris_ports[port].dtr_pin, \
- CONFIG_ETRAX_SER##port##_DTR_BIT); \
- else \
- serial_cris_ports[port].dtr_pin = dummy_pin; \
- if (strcmp(CONFIG_ETRAX_SER##port##_DSR_BIT, "")) \
- crisv32_io_get_name(&serial_cris_ports[port].dsr_pin, \
- CONFIG_ETRAX_SER##port##_DSR_BIT); \
- else \
- serial_cris_ports[port].dsr_pin = dummy_pin; \
- if (strcmp(CONFIG_ETRAX_SER##port##_RI_BIT, "")) \
- crisv32_io_get_name(&serial_cris_ports[port].ri_pin, \
- CONFIG_ETRAX_SER##port##_RI_BIT); \
- else \
- serial_cris_ports[port].ri_pin = dummy_pin; \
- if (strcmp(CONFIG_ETRAX_SER##port##_CD_BIT, "")) \
- crisv32_io_get_name(&serial_cris_ports[port].cd_pin, \
- CONFIG_ETRAX_SER##port##_CD_BIT); \
- else \
- serial_cris_ports[port].cd_pin = dummy_pin; \
+ if (strcmp(CONFIG_ETRAX_SER##port##_DTR_BIT, "")) \
+ crisv32_io_get_name(&serial_cris_ports[port].dtr_pin, \
+ CONFIG_ETRAX_SER##port##_DTR_BIT); \
+ else \
+ serial_cris_ports[port].dtr_pin = dummy_pin; \
+ if (strcmp(CONFIG_ETRAX_SER##port##_DSR_BIT, "")) \
+ crisv32_io_get_name(&serial_cris_ports[port].dsr_pin, \
+ CONFIG_ETRAX_SER##port##_DSR_BIT); \
+ else \
+ serial_cris_ports[port].dsr_pin = dummy_pin; \
+ if (strcmp(CONFIG_ETRAX_SER##port##_RI_BIT, "")) \
+ crisv32_io_get_name(&serial_cris_ports[port].ri_pin, \
+ CONFIG_ETRAX_SER##port##_RI_BIT); \
+ else \
+ serial_cris_ports[port].ri_pin = dummy_pin; \
+ if (strcmp(CONFIG_ETRAX_SER##port##_CD_BIT, "")) \
+ crisv32_io_get_name(&serial_cris_ports[port].cd_pin, \
+ CONFIG_ETRAX_SER##port##_CD_BIT); \
+ else \
+ serial_cris_ports[port].cd_pin = dummy_pin; \
}
/* Set a serial port register if anything has changed. */
-#define MODIFY_REG(instance, reg, var) \
- if (REG_RD_INT(ser, instance, reg) \
- != REG_TYPE_CONV(int, reg_ser_##reg, var)) \
- REG_WR(ser, instance, reg, var);
+#define MODIFY_REG(instance, reg, var) \
+ do { \
+ if (REG_RD_INT(ser, instance, reg) != \
+ REG_TYPE_CONV(int, reg_ser_##reg, var)) \
+ REG_WR(ser, instance, reg, var); \
+ } while (0)
/*
* Regarding RS485 operation in crisv32 serial driver.
* ---------------------------------------------------
* RS485 can be run in two modes, full duplex using four wires (485FD) and
- * half duplex using two wires (485HD). The default mode of each serial port
- * is configured in the kernel configuration. The available modes are:
- * RS-232, RS-485 half duplex, and RS-485 full duplex.
+ * half duplex using two wires (485HD). The default mode of each serial port
+ * is configured in the kernel configuration. The available modes are:
+ * RS-232, RS-485 half duplex, and RS-485 full duplex.
*
* In the 485HD mode the direction of the data bus must be able to switch.
- * The direction of the transceiver is controlled by the RTS signal. Hence
- * the auto_rts function in the ETRAX FS chip is enabled in this mode, which
- * automatically toggle RTS when transmitting. The initial direction of the
+ * The direction of the transceiver is controlled by the RTS signal. Hence
+ * the auto_rts function in the ETRAX FS chip is enabled in this mode, which
+ * automatically toggle RTS when transmitting. The initial direction of the
* port is receiving.
*
- * In the 485FD mode two transceivers will be used, one in each direction.
- * Usually the hardware can handle both 485HD and 485FD, which implies that
- * one of the transceivers can change direction. Consequently that transceiver
+ * In the 485FD mode two transceivers will be used, one in each direction.
+ * Usually the hardware can handle both 485HD and 485FD, which implies that
+ * one of the transceivers can change direction. Consequently that transceiver
* must be tied to operate in the opposite direction of the other one, setting
* and keeping RTS to a fixed value do this.
*
- * There are two special "ioctl" that can configure the ports. These two are
+ * There are two special "ioctl" that can configure the ports. These two are
* left for backward compatible with older applications. The effects of using
* them are described below:
* The TIOCSERSETRS485:
@@ -137,297 +139,286 @@ struct etrax_recv_buffer {
};
struct uart_cris_port {
- struct uart_port port;
+ struct uart_port port;
int initialized;
int used;
int irq;
/* Used to check if port enabled as well by testing for zero. */
- reg_scope_instances regi_ser;
- reg_scope_instances regi_dmain;
- reg_scope_instances regi_dmaout;
-
- struct crisv32_iopin dtr_pin;
- struct crisv32_iopin dsr_pin;
- struct crisv32_iopin ri_pin;
- struct crisv32_iopin cd_pin;
-
- struct dma_descr_context tr_context_descr
- __attribute__ ((__aligned__(32)));
- struct dma_descr_data tr_descr[SERIAL_TX_DESCRIPTORS]
- __attribute__ ((__aligned__(32)));
- struct dma_descr_context rec_context_descr
- __attribute__ ((__aligned__(32)));
- struct dma_descr_data rec_descr[SERIAL_RECV_DESCRIPTORS]
- __attribute__ ((__aligned__(32)));
+ reg_scope_instances regi_ser;
+ reg_scope_instances regi_dmain;
+ reg_scope_instances regi_dmaout;
+
+ struct crisv32_iopin dtr_pin;
+ struct crisv32_iopin dsr_pin;
+ struct crisv32_iopin ri_pin;
+ struct crisv32_iopin cd_pin;
+
+ struct dma_descr_context tr_context_descr __aligned(32);
+ struct dma_descr_data tr_descr[SERIAL_TX_DESCRIPTORS] __aligned(32);
+ struct dma_descr_context rec_context_descr __aligned(32);
+ struct dma_descr_data rec_descr[SERIAL_RECV_DESCRIPTORS] __aligned(32);
/* This is the first one in the list the HW is working on now. */
- struct dma_descr_data* first_tx_descr;
+ struct dma_descr_data *first_tx_descr;
/* This is the last one in the list the HW is working on now. */
- struct dma_descr_data* last_tx_descr;
+ struct dma_descr_data *last_tx_descr;
/* This is how many characters the HW is working on now. */
- unsigned int tx_pending_chars;
+ unsigned int tx_pending_chars;
- int tx_started;
- unsigned int cur_rec_descr;
+ int tx_started;
+ unsigned int cur_rec_descr;
struct etrax_recv_buffer *first_recv_buffer;
struct etrax_recv_buffer *last_recv_buffer;
- unsigned int recv_cnt;
- unsigned int max_recv_cnt;
+ unsigned int recv_cnt;
+ unsigned int max_recv_cnt;
/* The time for 1 char, in usecs. */
- unsigned long char_time_usec;
+ unsigned long char_time_usec;
/* Last tx usec in the jiffies. */
- unsigned long last_tx_active_usec;
+ unsigned long last_tx_active_usec;
/* Last tx time in jiffies. */
- unsigned long last_tx_active;
+ unsigned long last_tx_active;
/* Last rx usec in the jiffies. */
- unsigned long last_rx_active_usec;
+ unsigned long last_rx_active_usec;
/* Last rx time in jiffies. */
- unsigned long last_rx_active;
+ unsigned long last_rx_active;
#ifdef CONFIG_ETRAX_RS485
/* RS-485 support, duh. */
- struct rs485_control rs485;
+ struct rs485_control rs485;
#endif
- int port_type;
- int write_ongoing;
+ int port_type;
+ int write_ongoing;
};
-extern struct uart_driver serial_cris_driver;
+static struct uart_driver serial_cris_driver;
static struct uart_port *console_port;
static int console_baud = 115200;
static struct uart_cris_port serial_cris_ports[UART_NR] = {
-{
+ {
#ifdef CONFIG_ETRAX_SERIAL_PORT0
- .used = 1,
- .irq = SER0_INTR_VECT,
- .regi_ser = regi_ser0,
- /*
- * We initialize the dma stuff like this to get a compiler error
- * if a CONFIG is missing
- */
- .regi_dmain =
-# ifdef CONFIG_ETRAX_SERIAL_PORT0_DMA7_IN
- regi_dma7,
-# elif defined(CONFIG_ETRAX_SERIAL_PORT0_DMA1_IN)
- regi_dma1,
-# elif defined CONFIG_ETRAX_SERIAL_PORT0_NO_DMA_IN
- regi_NULL,
-# endif
-
- .regi_dmaout =
-# ifdef CONFIG_ETRAX_SERIAL_PORT0_DMA6_OUT
- regi_dma6,
-# elif defined(CONFIG_ETRAX_SERIAL_PORT0_DMA7_OUT)
- regi_dma7,
-# else
- regi_NULL,
-# endif
-
-# ifdef CONFIG_ETRAX_RS485
-# ifdef CONFIG_ETRAX_SERIAL_PORT0_TYPE_485HD
- .port_type = TYPE_485HD,
-# endif
-# ifdef CONFIG_ETRAX_SERIAL_PORT0_TYPE_485FD
- .port_type = TYPE_485FD,
-# endif
-# endif
+ .used = 1,
+ .irq = SER0_INTR_VECT,
+ .regi_ser = regi_ser0,
+ /*
+ * We initialize the dma stuff like this to get a compiler error
+ * if a CONFIG is missing
+ */
+ .regi_dmain =
+#ifdef CONFIG_ETRAX_SERIAL_PORT0_DMA7_IN
+ regi_dma7,
+#elif defined(CONFIG_ETRAX_SERIAL_PORT0_DMA1_IN)
+ regi_dma1,
+#elif defined CONFIG_ETRAX_SERIAL_PORT0_NO_DMA_IN
+ regi_NULL,
+#endif
+
+ .regi_dmaout =
+#ifdef CONFIG_ETRAX_SERIAL_PORT0_DMA6_OUT
+ regi_dma6,
+#elif defined(CONFIG_ETRAX_SERIAL_PORT0_DMA7_OUT)
+ regi_dma7,
#else
- .regi_ser = regi_NULL,
- .regi_dmain = regi_NULL,
- .regi_dmaout = regi_NULL,
+ regi_NULL,
#endif
- .write_ongoing = 0
-}, /* ttyS0 */
-{
+
+#ifdef CONFIG_ETRAX_RS485
+#ifdef CONFIG_ETRAX_SERIAL_PORT0_TYPE_485HD
+ .port_type = TYPE_485HD,
+#endif
+#ifdef CONFIG_ETRAX_SERIAL_PORT0_TYPE_485FD
+ .port_type = TYPE_485FD,
+#endif
+#endif
+#else
+ .regi_ser = regi_NULL,
+ .regi_dmain = regi_NULL,
+ .regi_dmaout = regi_NULL,
+#endif
+ .write_ongoing = 0}, /* ttyS0 */
+ {
#ifdef CONFIG_ETRAX_SERIAL_PORT1
- .used = 1,
- .irq = SER1_INTR_VECT,
- .regi_ser = regi_ser1,
- .regi_dmain =
-# ifdef CONFIG_ETRAX_SERIAL_PORT1_DMA5_IN
- regi_dma5,
-# elif defined(CONFIG_ETRAX_SERIAL_PORT1_NO_DMA_IN)
- regi_NULL,
-# endif
-
- .regi_dmaout =
-# ifdef CONFIG_ETRAX_SERIAL_PORT1_DMA4_OUT
- regi_dma4,
-# elif defined(CONFIG_ETRAX_SERIAL_PORT1_NO_DMA_OUT)
- regi_NULL,
-# endif
-
-# ifdef CONFIG_ETRAX_RS485
-# ifdef CONFIG_ETRAX_SERIAL_PORT1_TYPE_485HD
- .port_type = TYPE_485HD,
-# endif
-# ifdef CONFIG_ETRAX_SERIAL_PORT1_TYPE_485FD
- .port_type = TYPE_485FD,
-# endif
-# endif
+ .used = 1,
+ .irq = SER1_INTR_VECT,
+ .regi_ser = regi_ser1,
+ .regi_dmain =
+#ifdef CONFIG_ETRAX_SERIAL_PORT1_DMA5_IN
+ regi_dma5,
+#elif defined(CONFIG_ETRAX_SERIAL_PORT1_NO_DMA_IN)
+ regi_NULL,
+#endif
+
+ .regi_dmaout =
+#ifdef CONFIG_ETRAX_SERIAL_PORT1_DMA4_OUT
+ regi_dma4,
+#elif defined(CONFIG_ETRAX_SERIAL_PORT1_NO_DMA_OUT)
+ regi_NULL,
+#endif
+
+#ifdef CONFIG_ETRAX_RS485
+#ifdef CONFIG_ETRAX_SERIAL_PORT1_TYPE_485HD
+ .port_type = TYPE_485HD,
+#endif
+#ifdef CONFIG_ETRAX_SERIAL_PORT1_TYPE_485FD
+ .port_type = TYPE_485FD,
+#endif
+#endif
#else
- .regi_ser = regi_NULL,
- .regi_dmain = regi_NULL,
- .regi_dmaout = regi_NULL,
+ .regi_ser = regi_NULL,
+ .regi_dmain = regi_NULL,
+ .regi_dmaout = regi_NULL,
#endif
- .write_ongoing = 0
-}, /* ttyS1 */
-{
+ .write_ongoing = 0}, /* ttyS1 */
+ {
#ifdef CONFIG_ETRAX_SERIAL_PORT2
- .used = 1,
- .irq = SER2_INTR_VECT,
- .regi_ser = regi_ser2,
- .regi_dmain =
-# ifdef CONFIG_ETRAX_SERIAL_PORT2_DMA3_IN
- regi_dma3,
-# elif defined(CONFIG_ETRAX_SERIAL_PORT2_DMA7_IN)
- regi_dma7,
-# elif defined(CONFIG_ETRAX_SERIAL_PORT2_NO_DMA_IN)
- regi_NULL,
-# endif
+ .used = 1,
+ .irq = SER2_INTR_VECT,
+ .regi_ser = regi_ser2,
+ .regi_dmain =
+#ifdef CONFIG_ETRAX_SERIAL_PORT2_DMA3_IN
+ regi_dma3,
+#elif defined(CONFIG_ETRAX_SERIAL_PORT2_DMA7_IN)
+ regi_dma7,
+#elif defined(CONFIG_ETRAX_SERIAL_PORT2_NO_DMA_IN)
+ regi_NULL,
+#endif
.regi_dmaout =
-# ifdef CONFIG_ETRAX_SERIAL_PORT2_DMA2_OUT
- regi_dma2,
-# elif defined(CONFIG_ETRAX_SERIAL_PORT2_DMA6_OUT)
- regi_dma6,
-# elif defined(CONFIG_ETRAX_SERIAL_PORT2_NO_DMA_OUT)
- regi_NULL,
-# endif
-
-# ifdef CONFIG_ETRAX_RS485
-# ifdef CONFIG_ETRAX_SERIAL_PORT2_TYPE_485HD
- .port_type = TYPE_485HD,
-# endif
-# ifdef CONFIG_ETRAX_SERIAL_PORT2_TYPE_485FD
- .port_type = TYPE_485FD,
-# endif
-# endif
+#ifdef CONFIG_ETRAX_SERIAL_PORT2_DMA2_OUT
+ regi_dma2,
+#elif defined(CONFIG_ETRAX_SERIAL_PORT2_DMA6_OUT)
+ regi_dma6,
+#elif defined(CONFIG_ETRAX_SERIAL_PORT2_NO_DMA_OUT)
+ regi_NULL,
+#endif
+
+#ifdef CONFIG_ETRAX_RS485
+#ifdef CONFIG_ETRAX_SERIAL_PORT2_TYPE_485HD
+ .port_type = TYPE_485HD,
+#endif
+#ifdef CONFIG_ETRAX_SERIAL_PORT2_TYPE_485FD
+ .port_type = TYPE_485FD,
+#endif
+#endif
#else
- .regi_ser = regi_NULL,
- .regi_dmain = regi_NULL,
- .regi_dmaout = regi_NULL,
+ .regi_ser = regi_NULL,
+ .regi_dmain = regi_NULL,
+ .regi_dmaout = regi_NULL,
#endif
- .write_ongoing = 0
-}, /* ttyS2 */
-{
+ .write_ongoing = 0}, /* ttyS2 */
+ {
#ifdef CONFIG_ETRAX_SERIAL_PORT3
- .used = 1,
- .irq = SER3_INTR_VECT,
- .regi_ser = regi_ser3,
- .regi_dmain =
-# ifdef CONFIG_ETRAX_SERIAL_PORT3_DMA9_IN
- regi_dma9,
-# elif defined(CONFIG_ETRAX_SERIAL_PORT3_DMA4_IN)
- regi_dma3,
-# else
- regi_NULL,
-# endif
-
- .regi_dmaout =
-# ifdef CONFIG_ETRAX_SERIAL_PORT3_DMA8_OUT
- regi_dma8,
-# elif defined(CONFIG_ETRAX_SERIAL_PORT3_DMA2_OUT)
- regi_dma2,
-# else
- regi_NULL,
-# endif
-# ifdef CONFIG_ETRAX_RS485
-# ifdef CONFIG_ETRAX_SERIAL_PORT3_TYPE_485HD
- .port_type = TYPE_485HD,
-# endif
-# ifdef CONFIG_ETRAX_SERIAL_PORT3_TYPE_485FD
- .port_type = TYPE_485FD,
-# endif
-# endif
+ .used = 1,
+ .irq = SER3_INTR_VECT,
+ .regi_ser = regi_ser3,
+ .regi_dmain =
+#ifdef CONFIG_ETRAX_SERIAL_PORT3_DMA9_IN
+ regi_dma9,
+#elif defined(CONFIG_ETRAX_SERIAL_PORT3_DMA4_IN)
+ regi_dma3,
#else
- .regi_ser = regi_NULL,
- .regi_dmain = regi_NULL,
- .regi_dmaout = regi_NULL,
+ regi_NULL,
#endif
- .write_ongoing = 0
-}, /* ttyS3 */
+
+ .regi_dmaout =
+#ifdef CONFIG_ETRAX_SERIAL_PORT3_DMA8_OUT
+ regi_dma8,
+#elif defined(CONFIG_ETRAX_SERIAL_PORT3_DMA2_OUT)
+ regi_dma2,
+#else
+ regi_NULL,
+#endif
+#ifdef CONFIG_ETRAX_RS485
+#ifdef CONFIG_ETRAX_SERIAL_PORT3_TYPE_485HD
+ .port_type = TYPE_485HD,
+#endif
+#ifdef CONFIG_ETRAX_SERIAL_PORT3_TYPE_485FD
+ .port_type = TYPE_485FD,
+#endif
+#endif
+#else
+ .regi_ser = regi_NULL,
+ .regi_dmain = regi_NULL,
+ .regi_dmaout = regi_NULL,
+#endif
+ .write_ongoing = 0}, /* ttyS3 */
#if CONFIG_ETRAX_SERIAL_PORTS == 5
-{
+ {
#ifdef CONFIG_ETRAX_SERIAL_PORT4
- .used = 1,
- .irq = SER4_INTR_VECT,
- .regi_ser = regi_ser4,
- .regi_dmain =
-# ifdef CONFIG_ETRAX_SERIAL_PORT4_DMA9_IN
- regi_dma9,
-# else
- regi_NULL,
-# endif
+ .used = 1,
+ .irq = SER4_INTR_VECT,
+ .regi_ser = regi_ser4,
+ .regi_dmain =
+#ifdef CONFIG_ETRAX_SERIAL_PORT4_DMA9_IN
+ regi_dma9,
+#else
+ regi_NULL,
+#endif
.regi_dmaout = regi_NULL,
-# ifdef CONFIG_ETRAX_RS485
-# ifdef CONFIG_ETRAX_SERIAL_PORT4_TYPE_485HD
- .port_type = TYPE_485HD,
-# endif
-# ifdef CONFIG_ETRAX_SERIAL_PORT4_TYPE_485FD
- .port_type = TYPE_485FD,
-# endif
-# endif
+#ifdef CONFIG_ETRAX_RS485
+#ifdef CONFIG_ETRAX_SERIAL_PORT4_TYPE_485HD
+ .port_type = TYPE_485HD,
+#endif
+#ifdef CONFIG_ETRAX_SERIAL_PORT4_TYPE_485FD
+ .port_type = TYPE_485FD,
+#endif
+#endif
#else
- .regi_ser = regi_NULL,
- .regi_dmain = regi_NULL,
- .regi_dmaout = regi_NULL,
+ .regi_ser = regi_NULL,
+ .regi_dmain = regi_NULL,
+ .regi_dmaout = regi_NULL,
#endif
- .write_ongoing = 0
-}, /* ttyS4 */
+ .write_ongoing = 0}, /* ttyS4 */
#endif
-{
+ {
#ifdef CONFIG_ETRAX_DEBUG_PORT_NULL
- .used = 1,
+ .used = 1,
#endif
- .regi_ser = regi_NULL,
- .write_ongoing = 0
-} /* Dummy console port */
+ .regi_ser = regi_NULL,
+ .write_ongoing = 0} /* Dummy console port */
};
/* Dummy pin used for unused CD, DSR, DTR and RI signals. */
static unsigned long io_dummy;
-static struct crisv32_ioport dummy_port =
-{
+static struct crisv32_ioport dummy_port = {
&io_dummy,
&io_dummy,
&io_dummy,
32
};
-static struct crisv32_iopin dummy_pin =
-{
+
+static struct crisv32_iopin dummy_pin = {
&dummy_port,
0
};
static int selected_console =
#if defined(CONFIG_ETRAX_DEBUG_PORT0)
-0;
+ 0;
#elif defined(CONFIG_ETRAX_DEBUG_PORT1)
-1;
+ 1;
#elif defined(CONFIG_ETRAX_DEBUG_PORT2)
-2;
+ 2;
#elif defined(CONFIG_ETRAX_DEBUG_PORT3)
-3;
+ 3;
#elif defined(CONFIG_ETRAX_DEBUG_PORT4)
-4;
-#else /* CONFIG_ETRAX_DEBUG_PORT_NULL */
+ 4;
+#else /* CONFIG_ETRAX_DEBUG_PORT_NULL */
#if CONFIG_ETRAX_SERIAL_PORTS == 5
-5;
+ 5;
#else
-4;
+ 4;
#endif
#endif
@@ -438,7 +429,6 @@ static void serial_cris_stop_rx(struct uart_port *port);
/*
* Interrupts are disabled on entering
*/
-#ifndef CONFIG_ETRAX_VCS_SIM
static void
cris_console_write(struct console *co, const char *s, unsigned int count)
{
@@ -458,7 +448,7 @@ cris_console_write(struct console *co, const char *s,
unsigned int count)
return;
/* Switch to manual mode. */
- tr_dma_en = old = REG_RD (ser, up->regi_ser, rw_tr_dma_en);
+ tr_dma_en = old = REG_RD(ser, up->regi_ser, rw_tr_dma_en);
if (tr_dma_en.en == regk_ser_yes) {
tr_dma_en.en = regk_ser_no;
REG_WR(ser, up->regi_ser, rw_tr_dma_en, tr_dma_en);
@@ -469,15 +459,15 @@ cris_console_write(struct console *co, const char *s,
unsigned int count)
/* LF -> CRLF */
if (s[i] == '\n') {
do {
- stat = REG_RD (ser, up->regi_ser, r_stat_din);
+ stat = REG_RD(ser, up->regi_ser, r_stat_din);
} while (!stat.tr_rdy);
- REG_WR_INT (ser, up->regi_ser, rw_dout, '\r');
+ REG_WR_INT(ser, up->regi_ser, rw_dout, '\r');
}
/* Wait until transmitter is ready and send. */
do {
- stat = REG_RD (ser, up->regi_ser, r_stat_din);
+ stat = REG_RD(ser, up->regi_ser, r_stat_din);
} while (!stat.tr_rdy);
- REG_WR_INT (ser, up->regi_ser, rw_dout, s[i]);
+ REG_WR_INT(ser, up->regi_ser, rw_dout, s[i]);
/* Feed watchdog, because this may take looong time. */
reset_watchdog();
@@ -487,39 +477,9 @@ cris_console_write(struct console *co, const char *s,
unsigned int count)
if (tr_dma_en.en != old.en)
REG_WR(ser, up->regi_ser, rw_tr_dma_en, old);
}
-#else
-
-extern void print_str( const char *str );
-static char buffer[1024];
-static char msg[] = "Debug: ";
-static int buffer_pos = sizeof(msg) - 1;
-
-static void
-cris_console_write(struct console *co, const char *buf, unsigned int len)
-{
- char* pos;
- pos = memchr(buf, '\n', len);
- if (pos) {
- int l = ++pos - buf;
- memcpy(buffer + buffer_pos, buf, l);
- memcpy(buffer, msg, sizeof(msg) - 1);
- buffer[buffer_pos + l] = '\0';
- print_str(buffer);
- buffer_pos = sizeof(msg) - 1;
- if (pos - buf != len) {
- memcpy(buffer + buffer_pos, pos, len - l);
- buffer_pos += len - l;
- }
- } else {
- memcpy(buffer + buffer_pos, buf, len);
- buffer_pos += len;
- }
-}
-#endif
static void cris_serial_port_init(struct uart_port *port, int line);
-static int __init
-cris_console_setup(struct console *co, char *options)
+static int __init cris_console_setup(struct console *co, char *options)
{
struct uart_port *port;
int baud = 115200;
@@ -532,7 +492,7 @@ cris_console_setup(struct console *co, char *options)
if (options)
selected_console = co->index;
port = &serial_cris_ports[selected_console].port;
- console_port = port;
+ console_port = port;
co->flags |= CON_CONSDEV;
@@ -546,8 +506,7 @@ cris_console_setup(struct console *co, char *options)
return 0;
}
-static struct tty_driver*
-cris_console_device(struct console* co, int *index)
+static struct tty_driver *cris_console_device(struct console *co, int *index)
{
struct uart_driver *p = co->data;
*index = selected_console;
@@ -555,28 +514,26 @@ cris_console_device(struct console* co, int *index)
}
static struct console cris_console = {
- .name = "ttyS",
- .write = cris_console_write,
- .device = cris_console_device,
- .setup = cris_console_setup,
- .flags = CON_PRINTBUFFER,
- .index = -1,
- .data = &serial_cris_driver,
+ .name = "ttyS",
+ .write = cris_console_write,
+ .device = cris_console_device,
+ .setup = cris_console_setup,
+ .flags = CON_PRINTBUFFER,
+ .index = -1,
+ .data = &serial_cris_driver,
};
-#define SERIAL_CRIS_CONSOLE &cris_console
-
-struct uart_driver serial_cris_driver = {
- .owner = THIS_MODULE,
- .driver_name = "serial",
- .dev_name = "ttyS",
- .major = TTY_MAJOR,
- .minor = 64,
- .nr = UART_NR,
- .cons = SERIAL_CRIS_CONSOLE,
+static struct uart_driver serial_cris_driver = {
+ .owner = THIS_MODULE,
+ .driver_name = "serial",
+ .dev_name = "ttyS",
+ .major = TTY_MAJOR,
+ .minor = 64,
+ .nr = UART_NR,
+ .cons = &cris_console,
};
-static int inline crisv32_serial_get_rts(struct uart_cris_port *up)
+static inline int crisv32_serial_get_rts(struct uart_cris_port *up)
{
reg_scope_instances regi_ser = up->regi_ser;
/*
@@ -584,6 +541,7 @@ static int inline crisv32_serial_get_rts(struct
uart_cris_port *up)
* what the pin is? (if auto_rts is used it differs during tx)
*/
reg_ser_r_stat_din rstat = REG_RD(ser, regi_ser, r_stat_din);
+
return !(rstat.rts_n == regk_ser_active);
}
@@ -591,14 +549,15 @@ static int inline crisv32_serial_get_rts(struct
uart_cris_port *up)
* A set = 0 means 3.3V on the pin, bitvalue: 0=active, 1=inactive
* 0=0V , 1=3.3V
*/
-static inline void crisv32_serial_set_rts(struct uart_cris_port *up, int set,
int force)
+static inline void crisv32_serial_set_rts(struct uart_cris_port *up, int set,
+ int force)
{
reg_scope_instances regi_ser = up->regi_ser;
#ifdef CONFIG_ETRAX_RS485
/* Never toggle RTS if port is in 485 mode. If port is in 485FD mode we
* do not want to send with the reciever and for 485HD mode auto_rts
- * take care of the RTS for us.
+ * take care of the RTS for us.
*/
if (force || !up->rs485.enabled) {
#else
@@ -609,7 +568,7 @@ static inline void crisv32_serial_set_rts(struct
uart_cris_port *up, int set, in
local_irq_save(flags);
rec_ctrl = REG_RD(ser, regi_ser, rw_rec_ctrl);
-
+
if (set)
rec_ctrl.rts_n = regk_ser_active;
else
@@ -620,10 +579,11 @@ static inline void crisv32_serial_set_rts(struct
uart_cris_port *up, int set, in
}
/* Input */
-static int inline crisv32_serial_get_cts(struct uart_cris_port *up)
+static inline int crisv32_serial_get_cts(struct uart_cris_port *up)
{
reg_scope_instances regi_ser = up->regi_ser;
reg_ser_r_stat_din rstat = REG_RD(ser, regi_ser, r_stat_din);
+
return (rstat.cts_n == regk_ser_active);
}
@@ -646,9 +606,9 @@ static int inline crisv32_serial_get_cts(struct
uart_cris_port *up)
void serial_cris_send_xchar(struct uart_port *port, char ch)
{
- struct uart_cris_port *up = (struct uart_cris_port *)port;
- reg_ser_rw_dout dout = { .data = ch };
- reg_ser_rw_ack_intr ack_intr = { .tr_rdy = regk_ser_yes };
+ struct uart_cris_port *up = (struct uart_cris_port *) port;
+ reg_ser_rw_dout dout = {.data = ch };
+ reg_ser_rw_ack_intr ack_intr = {.tr_rdy = regk_ser_yes };
reg_ser_r_stat_din rstat;
reg_ser_rw_tr_ctrl prev_tr_ctrl, tr_ctrl;
reg_scope_instances regi_ser = up->regi_ser;
@@ -695,8 +655,9 @@ void serial_cris_send_xchar(struct uart_port *port, char ch)
* inhibit transmission of the character.
*/
if (rstat.xoff_detect) {
- reg_ser_rw_xoff_clr xoff_clr = { .clr = 1 };
+ reg_ser_rw_xoff_clr xoff_clr = {.clr = 1 };
reg_ser_rw_tr_dma_en tr_dma_en;
+
REG_WR(ser, regi_ser, rw_xoff_clr, xoff_clr);
tr_dma_en = REG_RD(ser, regi_ser, rw_tr_dma_en);
@@ -728,23 +689,23 @@ static void transmit_chars_dma(struct uart_cris_port *up);
static void serial_cris_start_tx(struct uart_port *port)
{
- struct uart_cris_port *up = (struct uart_cris_port *)port;
+ struct uart_cris_port *up = (struct uart_cris_port *) port;
reg_scope_instances regi_ser = up->regi_ser;
reg_ser_rw_tr_ctrl tr_ctrl;
/* we have already done below if a write is ongoing */
- if (!up->regi_dmaout && up->write_ongoing)
+ if (!up->regi_dmaout && up->write_ongoing)
return;
#ifdef CONFIG_ETRAX_RS485
- if (up->rs485.enabled)
- {
+ if (up->rs485.enabled) {
/* If we are in RS-485 mode, we need to toggle RTS and disable
* the receiver before initiating a DMA transfer
*/
if (up->rs485.delay_rts_before_send > 0) {
- reg_ser_rw_tr_ctrl tr_ctrl = REG_RD(ser, regi_ser,
rw_tr_ctrl);
+ reg_ser_rw_tr_ctrl tr_ctrl =
+ REG_RD(ser, regi_ser, rw_tr_ctrl);
tr_ctrl.auto_rts = regk_ser_no;
REG_WR(ser, regi_ser, rw_tr_ctrl, tr_ctrl);
crisv32_serial_set_rts(up, up->rs485.rts_on_send, 1);
@@ -752,16 +713,16 @@ static void serial_cris_start_tx(struct uart_port *port)
tr_ctrl.auto_rts = regk_ser_yes;
REG_WR(ser, regi_ser, rw_tr_ctrl, tr_ctrl);
crisv32_serial_set_rts(up, !up->rs485.rts_on_send, 1);
- }
- }
+ }
+ }
#endif
-
+
tr_ctrl = REG_RD(ser, regi_ser, rw_tr_ctrl);
tr_ctrl.stop = regk_ser_no;
REG_WR(ser, regi_ser, rw_tr_ctrl, tr_ctrl);
if (!up->regi_dmaout) {
reg_ser_rw_intr_mask intr_mask =
- REG_RD(ser, regi_ser, rw_intr_mask);
+ REG_RD(ser, regi_ser, rw_intr_mask);
intr_mask.tr_rdy = regk_ser_yes;
REG_WR(ser, regi_ser, rw_intr_mask, intr_mask);
up->write_ongoing = 1;
@@ -770,7 +731,8 @@ static void serial_cris_start_tx(struct uart_port *port)
* We're called possibly to re-enable transmission after it
* has been disabled. If so, DMA needs to be re-enabled.
*/
- reg_ser_rw_tr_dma_en tr_dma_en = { .en = 1 };
+ reg_ser_rw_tr_dma_en tr_dma_en = {.en = 1 };
+
REG_WR(ser, regi_ser, rw_tr_dma_en, tr_dma_en);
transmit_chars_dma(up);
}
@@ -789,12 +751,12 @@ static void serial_cris_start_tx(struct uart_port *port)
static void serial_cris_stop_tx(struct uart_port *port)
{
- struct uart_cris_port *up = (struct uart_cris_port *)port;
+ struct uart_cris_port *up = (struct uart_cris_port *) port;
reg_scope_instances regi_ser = up->regi_ser;
reg_ser_rw_tr_ctrl tr_ctrl;
reg_ser_rw_intr_mask intr_mask;
- reg_ser_rw_tr_dma_en tr_dma_en = {0};
- reg_ser_rw_xoff_clr xoff_clr = {0};
+ reg_ser_rw_tr_dma_en tr_dma_en = { 0 };
+ reg_ser_rw_xoff_clr xoff_clr = { 0 };
/*
* For the non-DMA case, we'd get a tr_rdy interrupt that we're not
@@ -832,7 +794,7 @@ static void serial_cris_stop_tx(struct uart_port *port)
static void serial_cris_stop_rx(struct uart_port *port)
{
- struct uart_cris_port *up = (struct uart_cris_port *)port;
+ struct uart_cris_port *up = (struct uart_cris_port *) port;
reg_scope_instances regi_ser = up->regi_ser;
reg_ser_rw_rec_ctrl rec_ctrl = REG_RD(ser, regi_ser, rw_rec_ctrl);
@@ -850,10 +812,10 @@ static void check_modem_status(struct uart_cris_port *up)
static unsigned int serial_cris_tx_empty(struct uart_port *port)
{
- struct uart_cris_port *up = (struct uart_cris_port *)port;
+ struct uart_cris_port *up = (struct uart_cris_port *) port;
unsigned long flags;
unsigned int ret;
- reg_ser_r_stat_din rstat = {0};
+ reg_ser_r_stat_din rstat = { 0 };
spin_lock_irqsave(&up->port.lock, flags);
if (up->regi_dmaout) {
@@ -881,17 +843,18 @@ static unsigned int serial_cris_tx_empty(struct uart_port
*port)
rstat = REG_RD(ser, up->regi_ser, r_stat_din);
ret = rstat.tr_empty ? TIOCSER_TEMT : 0;
- done:
+done:
spin_unlock_irqrestore(&up->port.lock, flags);
return ret;
}
+
static unsigned int serial_cris_get_mctrl(struct uart_port *port)
{
- struct uart_cris_port *up = (struct uart_cris_port *)port;
+ struct uart_cris_port *up = (struct uart_cris_port *) port;
unsigned int ret;
ret = 0;
- if (crisv32_serial_get_rts(up))
+ if (crisv32_serial_get_rts(up))
ret |= TIOCM_RTS;
/* DTR is active low */
if (!crisv32_io_rd(&up->dtr_pin))
@@ -912,7 +875,7 @@ static unsigned int serial_cris_get_mctrl(struct uart_port
*port)
static void serial_cris_set_mctrl(struct uart_port *port, unsigned int mctrl)
{
- struct uart_cris_port *up = (struct uart_cris_port *)port;
+ struct uart_cris_port *up = (struct uart_cris_port *) port;
crisv32_serial_set_rts(up, mctrl & TIOCM_RTS ? 1 : 0, 0);
/* DTR is active low */
@@ -925,7 +888,7 @@ static void serial_cris_set_mctrl(struct uart_port *port,
unsigned int mctrl)
static void serial_cris_break_ctl(struct uart_port *port, int break_state)
{
- struct uart_cris_port *up = (struct uart_cris_port *)port;
+ struct uart_cris_port *up = (struct uart_cris_port *) port;
unsigned long flags;
reg_ser_rw_tr_ctrl tr_ctrl;
reg_ser_rw_tr_dma_en tr_dma_en;
@@ -936,7 +899,7 @@ static void serial_cris_break_ctl(struct uart_port *port,
int break_state)
tr_dma_en = REG_RD(ser, up->regi_ser, rw_tr_dma_en);
intr_mask = REG_RD(ser, up->regi_ser, rw_intr_mask);
- if (break_state != 0) { /* Send break */
+ if (break_state != 0) { /* Send break */
/*
* We need to disable DMA (if used) or tr_rdy interrupts if no
* DMA. No need to make this conditional on use of DMA;
@@ -975,14 +938,13 @@ static void serial_cris_break_ctl(struct uart_port *port,
int break_state)
* possible.
*/
-static void
-transmit_chars_dma(struct uart_cris_port *up)
+static void transmit_chars_dma(struct uart_cris_port *up)
{
struct dma_descr_data *descr, *pending_descr, *dmapos;
struct dma_descr_data *last_tx_descr;
struct circ_buf *xmit = &up->port.state->xmit;
unsigned int sentl = 0;
- reg_dma_rw_ack_intr ack_intr = { .data = regk_dma_yes };
+ reg_dma_rw_ack_intr ack_intr = {.data = regk_dma_yes };
reg_dma_rw_stat status;
reg_scope_instances regi_dmaout = up->regi_dmaout;
unsigned int chars_in_q;
@@ -997,7 +959,7 @@ transmit_chars_dma(struct uart_cris_port *up)
*/
status = REG_RD(dma, regi_dmaout, rw_stat);
if (status.list_state == regk_dma_data_at_eol || !up->tx_started)
- dmapos = phys_to_virt((int)up->last_tx_descr->next);
+ dmapos = phys_to_virt((int) up->last_tx_descr->next);
else
dmapos = phys_to_virt(REG_RD_INT(dma, regi_dmaout, rw_data));
@@ -1005,8 +967,8 @@ transmit_chars_dma(struct uart_cris_port *up)
while (pending_descr != dmapos) {
sentl += pending_descr->after - pending_descr->buf;
pending_descr->after = pending_descr->buf = NULL;
- pending_descr = phys_to_virt((int)pending_descr->next);
- }
+ pending_descr = phys_to_virt((int) pending_descr->next);
+ }
up->first_tx_descr = pending_descr;
last_tx_descr = up->last_tx_descr;
@@ -1043,7 +1005,7 @@ transmit_chars_dma(struct uart_cris_port *up)
if (chars_to_send == 0)
goto done;
- descr = phys_to_virt((int)last_tx_descr->next);
+ descr = phys_to_virt((int) last_tx_descr->next);
/*
* We can't send anything if we could make the condition in
@@ -1056,8 +1018,8 @@ transmit_chars_dma(struct uart_cris_port *up)
goto done;
/* Set up the descriptor for output. */
- descr->buf = (void*)virt_to_phys(xmit->buf + xmit->tail
- + up->tx_pending_chars);
+ descr->buf = (void *) virt_to_phys(xmit->buf + xmit->tail
+ + up->tx_pending_chars);
descr->after = descr->buf + chars_to_send;
descr->eol = 1;
descr->out_eop = 0;
@@ -1079,38 +1041,38 @@ transmit_chars_dma(struct uart_cris_port *up)
up->tx_started = 1;
up->tr_context_descr.next = 0;
up->tr_context_descr.saved_data
- = (dma_descr_data*)virt_to_phys(descr);
+ = (dma_descr_data *) virt_to_phys(descr);
up->tr_context_descr.saved_data_buf = descr->buf;
DMA_START_CONTEXT(regi_dmaout,
virt_to_phys(&up->tr_context_descr));
- } else
+ } else
DMA_CONTINUE_DATA(regi_dmaout);
/* DMA is now running (hopefully). */
- done:
+done:
if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
uart_write_wakeup(&up->port);
}
-static void
-transmit_chars_no_dma(struct uart_cris_port *up)
+static void transmit_chars_no_dma(struct uart_cris_port *up)
{
int max_count;
struct circ_buf *xmit = &up->port.state->xmit;
reg_scope_instances regi_ser = up->regi_ser;
reg_ser_r_stat_din rstat;
- reg_ser_rw_ack_intr ack_intr = { .tr_rdy = regk_ser_yes };
+ reg_ser_rw_ack_intr ack_intr = {.tr_rdy = regk_ser_yes };
if (uart_circ_empty(xmit) || uart_tx_stopped(&up->port)) {
/* No more to send, so disable the interrupt. */
reg_ser_rw_intr_mask intr_mask;
+
intr_mask = REG_RD(ser, regi_ser, rw_intr_mask);
intr_mask.tr_rdy = 0;
intr_mask.tr_empty = 0;
REG_WR(ser, regi_ser, rw_intr_mask, intr_mask);
- up->write_ongoing=0;
+ up->write_ongoing = 0;
return;
}
@@ -1118,10 +1080,11 @@ transmit_chars_no_dma(struct uart_cris_port *up)
exiting the loop. */
max_count = 64;
do {
- reg_ser_rw_dout dout = { .data = xmit->buf[xmit->tail] };
+ reg_ser_rw_dout dout = {.data = xmit->buf[xmit->tail] };
+
REG_WR(ser, regi_ser, rw_dout, dout);
REG_WR(ser, regi_ser, rw_ack_intr, ack_intr);
- xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE-1);
+ xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
up->port.icount.tx++;
if (xmit->head == xmit->tail)
break;
@@ -1130,16 +1093,16 @@ transmit_chars_no_dma(struct uart_cris_port *up)
if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
uart_write_wakeup(&up->port);
-} /* transmit_chars_no_dma */
+} /* transmit_chars_no_dma */
-static struct etrax_recv_buffer *
-alloc_recv_buffer(unsigned int size)
+static struct etrax_recv_buffer *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)
panic("%s: Could not allocate %d bytes buffer\n",
- __FUNCTION__, size);
+ __func__, size);
buffer->next = NULL;
buffer->length = 0;
@@ -1149,8 +1112,7 @@ alloc_recv_buffer(unsigned int size)
}
static void
-append_recv_buffer(struct uart_cris_port *up,
- struct etrax_recv_buffer *buffer)
+append_recv_buffer(struct uart_cris_port *up, struct etrax_recv_buffer *buffer)
{
unsigned long flags;
@@ -1188,8 +1150,7 @@ add_char_and_flag(struct uart_cris_port *up, unsigned
char data,
return 1;
}
-static void
-flush_to_flip_buffer(struct uart_cris_port *up)
+static void flush_to_flip_buffer(struct uart_cris_port *up)
{
struct etrax_recv_buffer *buffer;
@@ -1198,9 +1159,9 @@ flush_to_flip_buffer(struct uart_cris_port *up)
while ((buffer = up->first_recv_buffer)) {
unsigned int count = (unsigned int)
- tty_insert_flip_string(&up->port.state->port,
- buffer->buffer,
- buffer->length);
+ tty_insert_flip_string(&up->port.state->port,
+ buffer->buffer,
+ buffer->length);
up->recv_cnt -= count;
@@ -1227,12 +1188,11 @@ handle_descr_data(struct uart_cris_port *up, struct
dma_descr_data *descr,
unsigned int recvl)
{
struct etrax_recv_buffer *buffer
- = phys_to_virt((unsigned long)descr->buf) - sizeof *buffer;
+ = phys_to_virt((unsigned long) descr->buf) - sizeof(*buffer);
if (up->recv_cnt + recvl > 65536) {
- printk(KERN_ERR "Too much pending incoming data on %s!"
- " Dropping %u bytes.\n", up->port.state->port.tty->name,
- recvl);
+ pr_err("Too much pending incoming data on %s! Dropping %u
bytes.\n",
+ up->port.state->port.tty->name, recvl);
return 0;
}
@@ -1243,18 +1203,16 @@ handle_descr_data(struct uart_cris_port *up, struct
dma_descr_data *descr,
flush_to_flip_buffer(up);
buffer = alloc_recv_buffer(SERIAL_DESCR_BUF_SIZE);
- descr->buf = (void*)virt_to_phys(buffer->buffer);
+ descr->buf = (void *) virt_to_phys(buffer->buffer);
descr->after = descr->buf + SERIAL_DESCR_BUF_SIZE;
return recvl;
}
-static unsigned int
-handle_all_descr_data(struct uart_cris_port *up)
+static unsigned int handle_all_descr_data(struct uart_cris_port *up)
{
- struct dma_descr_data *descr
- = &up->rec_descr[(up->cur_rec_descr - 1)
- % SERIAL_RECV_DESCRIPTORS];
+ struct dma_descr_data *descr = &up->rec_descr[(up->cur_rec_descr - 1) %
+ SERIAL_RECV_DESCRIPTORS];
struct dma_descr_data *prev_descr;
unsigned int recvl;
unsigned int ret = 0;
@@ -1284,18 +1242,17 @@ handle_all_descr_data(struct uart_cris_port *up)
*/
barrier();
prev_descr->eol = 0;
- flush_dma_descr(descr,1); // Cache bug workaround
- flush_dma_descr(prev_descr,0); // Cache bug workaround
+ flush_dma_descr(descr, 1); /* Cache bug workaround */
+ flush_dma_descr(prev_descr, 0); /* Cache bug workaround */
}
return ret;
}
-static void
-receive_chars_dma(struct uart_cris_port *up)
+static void receive_chars_dma(struct uart_cris_port *up)
{
reg_ser_r_stat_din rstat;
- reg_dma_rw_ack_intr ack_intr = {0};
+ reg_dma_rw_ack_intr ack_intr = { 0 };
/* Acknowledge both dma_descr and dma_eop irq. */
ack_intr.data = 1;
@@ -1313,7 +1270,8 @@ receive_chars_dma(struct uart_cris_port *up)
* rs_stat_din register and put the data in buffer manually.
*/
reg_ser_rs_stat_din stat_din;
- stat_din = REG_RD(ser, up->regi_ser, rs_stat_din);
+
+ stat_din = REG_RD(ser, up->regi_ser, rs_stat_din);
if (stat_din.par_err)
add_char_and_flag(up, stat_din.data, TTY_PARITY);
@@ -1350,13 +1308,12 @@ void receive_chars_no_dma(struct uart_cris_port *up)
icount->rx++;
if (stat_din.framing_err | stat_din.par_err | stat_din.orun) {
- if (stat_din.data == 0x00 &&
- stat_din.framing_err) {
+ if (stat_din.data == 0x00 && stat_din.framing_err) {
/* Most likely a break. */
flag = TTY_BREAK;
icount->brk++;
} else if (stat_din.par_err) {
- flag = TTY_PARITY;
+ flag = TTY_PARITY;
icount->parity++;
} else if (stat_din.orun) {
flag = TTY_OVERRUN;
@@ -1371,14 +1328,15 @@ void receive_chars_no_dma(struct uart_cris_port *up)
* If this becomes important, we probably *could* handle this
* gracefully by keeping track of the unhandled character.
*/
- if (!tty_insert_flip_char(&up->port.state->port,
stat_din.data, flag))
- panic("%s: No tty buffer space", __FUNCTION__);
+ if (!tty_insert_flip_char
+ (&up->port.state->port, stat_din.data, flag))
+ panic("%s: No tty buffer space", __func__);
rstat = REG_RD(ser, up->regi_ser, r_stat_din);
} while (rstat.dav && (max_count-- > 0));
spin_unlock(&up->port.lock);
tty_flip_buffer_push(&up->port.state->port);
spin_lock(&up->port.lock);
-} /* receive_chars_no_dma */
+} /* receive_chars_no_dma */
/*
* DMA output channel interrupt handler.
@@ -1387,7 +1345,7 @@ void receive_chars_no_dma(struct uart_cris_port *up)
*/
static irqreturn_t dma_tr_interrupt(int irq, void *dev_id)
{
- struct uart_cris_port *up = (struct uart_cris_port *)dev_id;
+ struct uart_cris_port *up = (struct uart_cris_port *) dev_id;
reg_dma_r_masked_intr masked_intr;
reg_scope_instances regi_dmaout;
int handled = 0;
@@ -1424,10 +1382,9 @@ static irqreturn_t dma_tr_interrupt(int irq, void
*dev_id)
/* DMA input channel interrupt handler. */
-static irqreturn_t
-dma_rec_interrupt(int irq, void *dev_id)
+static irqreturn_t dma_rec_interrupt(int irq, void *dev_id)
{
- struct uart_cris_port *up = (struct uart_cris_port *)dev_id;
+ struct uart_cris_port *up = (struct uart_cris_port *) dev_id;
reg_dma_r_masked_intr masked_intr;
reg_scope_instances regi_dmain;
int handled = 0;
@@ -1453,10 +1410,9 @@ dma_rec_interrupt(int irq, void *dev_id)
/* "Normal" serial port interrupt handler - both rx and tx. */
-static irqreturn_t
-ser_interrupt(int irq, void *dev_id)
+static irqreturn_t ser_interrupt(int irq, void *dev_id)
{
- struct uart_cris_port *up = (struct uart_cris_port *)dev_id;
+ struct uart_cris_port *up = (struct uart_cris_port *) dev_id;
reg_scope_instances regi_ser;
int handled = 0;
@@ -1470,6 +1426,7 @@ ser_interrupt(int irq, void *dev_id)
if (regi_ser) {
reg_ser_r_masked_intr masked_intr;
+
masked_intr = REG_RD(ser, regi_ser, r_masked_intr);
/*
* Check what interrupts are active before taking
@@ -1489,7 +1446,7 @@ ser_interrupt(int irq, void *dev_id)
}
spin_unlock(&up->port.lock);
return IRQ_RETVAL(handled);
-} /* ser_interrupt */
+} /* ser_interrupt */
static int start_recv_dma(struct uart_cris_port *up)
{
@@ -1500,8 +1457,8 @@ static int start_recv_dma(struct uart_cris_port *up)
/* Set up the receiving descriptors. */
for (i = 0; i < SERIAL_RECV_DESCRIPTORS; i++) {
buffer = alloc_recv_buffer(SERIAL_DESCR_BUF_SIZE);
- descr[i].next = (void*)virt_to_phys(&descr[i+1]);
- descr[i].buf = (void*)virt_to_phys(buffer->buffer);
+ descr[i].next = (void *) virt_to_phys(&descr[i + 1]);
+ descr[i].buf = (void *) virt_to_phys(buffer->buffer);
descr[i].after = descr[i].buf + SERIAL_DESCR_BUF_SIZE;
descr[i].eol = 0;
descr[i].out_eop = 0;
@@ -1513,21 +1470,20 @@ static int start_recv_dma(struct uart_cris_port *up)
}
/* Link the last descriptor to the first. */
- descr[i-1].next = (void*)virt_to_phys(&descr[0]);
+ descr[i - 1].next = (void *) virt_to_phys(&descr[0]);
/* And mark it as end of list. */
- descr[i-1].eol = 1;
+ descr[i - 1].eol = 1;
/* Start with the first descriptor in the list. */
up->cur_rec_descr = 0;
up->rec_context_descr.next = 0;
up->rec_context_descr.saved_data
- = (dma_descr_data *)virt_to_phys(&descr[up->cur_rec_descr]);
+ = (dma_descr_data *) virt_to_phys(&descr[up->cur_rec_descr]);
up->rec_context_descr.saved_data_buf = descr[up->cur_rec_descr].buf;
/* Start the DMA. */
- DMA_START_CONTEXT(up->regi_dmain,
- virt_to_phys(&up->rec_context_descr));
+ DMA_START_CONTEXT(up->regi_dmain, virt_to_phys(&up->rec_context_descr));
/* Input DMA should be running now. */
return 1;
@@ -1543,7 +1499,7 @@ static int serial_artpec_get_poll_char(struct uart_port
*port)
{
reg_ser_rs_stat_din stat;
reg_ser_rw_ack_intr ack_intr = { 0 };
- struct uart_cris_port *up = (struct uart_cris_port *)port;
+ struct uart_cris_port *up = (struct uart_cris_port *) port;
do {
stat = REG_RD(ser, up->regi_ser, rs_stat_din);
@@ -1556,25 +1512,24 @@ static int serial_artpec_get_poll_char(struct uart_port
*port)
return stat.data;
}
-static void serial_artpec_put_poll_char(struct uart_port *port,
- unsigned char c)
+static void serial_artpec_put_poll_char(struct uart_port *port, unsigned char
c)
{
reg_ser_r_stat_din stat;
- struct uart_cris_port *up = (struct uart_cris_port *)port;
+ struct uart_cris_port *up = (struct uart_cris_port *) port;
do {
- stat = REG_RD (ser, up->regi_ser, r_stat_din);
+ stat = REG_RD(ser, up->regi_ser, r_stat_din);
} while (!stat.tr_rdy);
- REG_WR_INT (ser, up->regi_ser, rw_dout, c);
+ REG_WR_INT(ser, up->regi_ser, rw_dout, c);
}
#endif /* CONFIG_CONSOLE_POLL */
static void start_receive(struct uart_cris_port *up)
{
reg_scope_instances regi_dmain = up->regi_dmain;
- if (regi_dmain) {
+
+ if (regi_dmain)
start_recv_dma(up);
- }
}
@@ -1582,16 +1537,17 @@ static void start_transmitter(struct uart_cris_port *up)
{
int i;
reg_scope_instances regi_dmaout = up->regi_dmaout;
+
if (regi_dmaout) {
for (i = 0; i < SERIAL_TX_DESCRIPTORS; i++) {
memset(&up->tr_descr[i], 0, sizeof(up->tr_descr[i]));
up->tr_descr[i].eol = 1;
up->tr_descr[i].intr = 1;
up->tr_descr[i].next = (dma_descr_data *)
- virt_to_phys(&up->tr_descr[i+1]);
+ virt_to_phys(&up->tr_descr[i + 1]);
}
- up->tr_descr[i-1].next = (dma_descr_data *)
- virt_to_phys(&up->tr_descr[0]);
+ up->tr_descr[i - 1].next = (dma_descr_data *)
+ virt_to_phys(&up->tr_descr[0]);
up->first_tx_descr = &up->tr_descr[0];
/*
@@ -1602,7 +1558,7 @@ static void start_transmitter(struct uart_cris_port *up)
* accidentally working code and data as we'd take a pass over
* the first, unused, descriptor.
*/
- up->last_tx_descr = &up->tr_descr[i-1];
+ up->last_tx_descr = &up->tr_descr[i - 1];
up->tx_started = 0;
up->tx_pending_chars = 0;
}
@@ -1610,12 +1566,12 @@ static void start_transmitter(struct uart_cris_port *up)
static int serial_cris_startup(struct uart_port *port)
{
- struct uart_cris_port *up = (struct uart_cris_port *)port;
+ struct uart_cris_port *up = (struct uart_cris_port *) port;
unsigned long flags;
- reg_ser_rw_intr_mask ser_intr_mask = {0};
- reg_dma_rw_intr_mask dmain_intr_mask = {0};
- reg_dma_rw_intr_mask dmaout_intr_mask = {0};
- reg_dma_rw_cfg cfg = {.en = 1};
+ reg_ser_rw_intr_mask ser_intr_mask = { 0 };
+ reg_dma_rw_intr_mask dmain_intr_mask = { 0 };
+ reg_dma_rw_intr_mask dmaout_intr_mask = { 0 };
+ reg_dma_rw_cfg cfg = {.en = 1 };
reg_scope_instances regi_dma;
/* We dont disable interrupts here because request_irq should
@@ -1629,8 +1585,7 @@ static int serial_cris_startup(struct uart_port *port)
if (port->line == 0) {
if (request_irq(SER0_INTR_VECT, ser_interrupt,
- IRQF_DISABLED, "ser0",
- &serial_cris_ports[0]))
+ IRQF_DISABLED, "ser0", &serial_cris_ports[0]))
panic("irq ser0");
/* Port ser0 can use dma6 for tx and dma7 for rx. */
#ifdef CONFIG_ETRAX_SERIAL_PORT0_DMA6_OUT
@@ -1638,21 +1593,18 @@ static int serial_cris_startup(struct uart_port *port)
IRQF_DISABLED, "serial 0 dma tr",
&serial_cris_ports[0]))
panic("irq ser0txdma");
- crisv32_request_dma(6, "ser0", DMA_PANIC_ON_ERROR, 0,
- dma_ser0);
+ crisv32_request_dma(6, "ser0", DMA_PANIC_ON_ERROR, 0, dma_ser0);
#endif
#ifdef CONFIG_ETRAX_SERIAL_PORT0_DMA7_IN
if (request_irq(DMA7_INTR_VECT, dma_rec_interrupt,
IRQF_DISABLED, "serial 0 dma rec",
&serial_cris_ports[0]))
panic("irq ser0rxdma");
- crisv32_request_dma(7, "ser0", DMA_PANIC_ON_ERROR, 0,
- dma_ser0);
+ crisv32_request_dma(7, "ser0", DMA_PANIC_ON_ERROR, 0, dma_ser0);
#endif
} else if (port->line == 1) {
if (request_irq(SER1_INTR_VECT, ser_interrupt,
- IRQF_DISABLED, "ser1",
- &serial_cris_ports[1]))
+ IRQF_DISABLED, "ser1", &serial_cris_ports[1]))
panic("irq ser1");
/* Port ser1 can use dma4 for tx and dma5 for rx. */
@@ -1661,21 +1613,18 @@ static int serial_cris_startup(struct uart_port *port)
IRQF_DISABLED, "serial 1 dma tr",
&serial_cris_ports[1]))
panic("irq ser1txdma");
- crisv32_request_dma(4, "ser1", DMA_PANIC_ON_ERROR, 0,
- dma_ser1);
+ crisv32_request_dma(4, "ser1", DMA_PANIC_ON_ERROR, 0, dma_ser1);
#endif
#ifdef CONFIG_ETRAX_SERIAL_PORT1_DMA5_IN
if (request_irq(DMA5_INTR_VECT, dma_rec_interrupt,
IRQF_DISABLED, "serial 1 dma rec",
&serial_cris_ports[1]))
panic("irq ser1rxdma");
- crisv32_request_dma(5, "ser1", DMA_PANIC_ON_ERROR, 0,
- dma_ser1);
+ crisv32_request_dma(5, "ser1", DMA_PANIC_ON_ERROR, 0, dma_ser1);
#endif
} else if (port->line == 2) {
if (request_irq(SER2_INTR_VECT, ser_interrupt,
- IRQF_DISABLED, "ser2",
- &serial_cris_ports[2]))
+ IRQF_DISABLED, "ser2", &serial_cris_ports[2]))
panic("irq ser2");
/* Port ser2 can use dma2 for tx and dma3 for rx. */
@@ -1684,22 +1633,19 @@ static int serial_cris_startup(struct uart_port *port)
IRQF_DISABLED, "serial 2 dma tr",
&serial_cris_ports[2]))
panic("irq ser2txdma");
- crisv32_request_dma(2, "ser2", DMA_PANIC_ON_ERROR, 0,
- dma_ser2);
+ crisv32_request_dma(2, "ser2", DMA_PANIC_ON_ERROR, 0, dma_ser2);
#endif
#ifdef CONFIG_ETRAX_SERIAL_PORT2_DMA3_IN
if (request_irq(DMA3_INTR_VECT, dma_rec_interrupt,
IRQF_DISABLED, "serial 2 dma rec",
&serial_cris_ports[2]))
panic("irq ser2rxdma");
- crisv32_request_dma(3, "ser2", DMA_PANIC_ON_ERROR, 0,
- dma_ser2);
+ crisv32_request_dma(3, "ser2", DMA_PANIC_ON_ERROR, 0, dma_ser2);
#endif
} else if (port->line == 3) {
if (request_irq(SER3_INTR_VECT, ser_interrupt,
- IRQF_DISABLED, "ser3",
- &serial_cris_ports[3]))
- panic("irq ser3" );
+ IRQF_DISABLED, "ser3", &serial_cris_ports[3]))
+ panic("irq ser3");
/* Port ser3 can use dma8 for tx and dma9 for rx. */
#ifdef CONFIG_ETRAX_SERIAL_PORT3_DMA8_OUT
@@ -1707,40 +1653,35 @@ static int serial_cris_startup(struct uart_port *port)
IRQF_DISABLED, "serial 3 dma tr",
&serial_cris_ports[3]))
panic("irq ser3txdma");
- crisv32_request_dma(8, "ser3", DMA_PANIC_ON_ERROR, 0,
- dma_ser3);
+ crisv32_request_dma(8, "ser3", DMA_PANIC_ON_ERROR, 0, dma_ser3);
#endif
#ifdef CONFIG_ETRAX_SERIAL_PORT3_DMA9_IN
if (request_irq(DMA9_INTR_VECT, dma_rec_interrupt,
IRQF_DISABLED, "serial 3 dma rec",
&serial_cris_ports[3]))
panic("irq ser3rxdma");
- crisv32_request_dma(9, "ser3", DMA_PANIC_ON_ERROR, 0,
- dma_ser3);
+ crisv32_request_dma(9, "ser3", DMA_PANIC_ON_ERROR, 0, dma_ser3);
#endif
}
#if CONFIG_ETRAX_SERIAL_PORTS == 5
else if (port->line == 4) {
- if (request_irq(SER4_INTR_VECT, ser_interrupt,
- IRQF_DISABLED, "ser4",
- &serial_cris_ports[4]))
- panic("irq ser4" );
+ if (request_irq(SER4_INTR_VECT, ser_interrupt,
+ IRQF_DISABLED, "ser4", &serial_cris_ports[4]))
+ panic("irq ser4");
#ifdef CONFIG_ETRAX_SERIAL_PORT4_DMA_OUT
- if (request_irq(DMA4_INTR_VECT, dma_tr_interrupt,
- IRQF_DISABLED, "serial 4 dma tr",
+ if (request_irq(DMA4_INTR_VECT, dma_tr_interrupt,
+ IRQF_DISABLED, "serial 4 dma tr",
&serial_cris_ports[4]))
panic("irq ser4txdma");
- crisv32_request_dma(5, "ser4", DMA_PANIC_ON_ERROR, 0,
- dma_ser4);
+ crisv32_request_dma(5, "ser4", DMA_PANIC_ON_ERROR, 0, dma_ser4);
#endif
#ifdef CONFIG_ETRAX_SERIAL_PORT4_DMA_IN
- if (request_irq(DMA5_INTR_VECT, dma_rec_interrupt,
- IRQF_DISABLED, "serial 4 dma rec",
+ if (request_irq(DMA5_INTR_VECT, dma_rec_interrupt,
+ IRQF_DISABLED, "serial 4 dma rec",
&serial_cris_ports[4]))
panic("irq ser4rxdma");
- crisv32_request_dma(5, "ser4", DMA_PANIC_ON_ERROR, 0,
- dma_ser4);
+ crisv32_request_dma(5, "ser4", DMA_PANIC_ON_ERROR, 0, dma_ser4);
#endif
}
#endif
@@ -1754,6 +1695,7 @@ static int serial_cris_startup(struct uart_port *port)
regi_dma = up->regi_dmain;
if (regi_dma) {
reg_dma_rw_ack_intr ack_intr = { 0 };
+
DMA_RESET(regi_dma);
/* Wait until reset cycle is complete. */
DMA_WAIT_UNTIL_RESET(regi_dma);
@@ -1769,6 +1711,7 @@ static int serial_cris_startup(struct uart_port *port)
regi_dma = up->regi_dmaout;
if (regi_dma) {
reg_dma_rw_ack_intr ack_intr = { 0 };
+
DMA_RESET(regi_dma);
/* Wait until reset cycle is complete. */
DMA_WAIT_UNTIL_RESET(regi_dma);
@@ -1801,7 +1744,7 @@ static int serial_cris_startup(struct uart_port *port)
static void serial_cris_shutdown(struct uart_port *port)
{
- struct uart_cris_port *up = (struct uart_cris_port *)port;
+ struct uart_cris_port *up = (struct uart_cris_port *) port;
unsigned long flags;
spin_lock_irqsave(&up->port.lock, flags);
@@ -1867,7 +1810,7 @@ static void serial_cris_shutdown(struct uart_port *port)
crisv32_free_dma(3);
free_irq(DMA3_INTR_VECT, &serial_cris_ports[3]);
#endif
- }
+ }
#if CONFIG_ETRAX_SERIAL_PORTS == 5
else if (port->line == 4) {
free_irq(SER4_INTR_VECT, &serial_cris_ports[4]);
@@ -1893,7 +1836,7 @@ static void serial_cris_shutdown(struct uart_port *port)
*/
for (rb = up->first_recv_buffer; rb != NULL; rb = rb_next) {
rb_next = rb->next;
- kfree (rb);
+ kfree(rb);
}
up->first_recv_buffer = NULL;
up->last_recv_buffer = NULL;
@@ -1903,11 +1846,10 @@ static void serial_cris_shutdown(struct uart_port *port)
* before we shut down the hardware above.
*/
for (i = 0, descr = up->rec_descr;
- i < SERIAL_RECV_DESCRIPTORS;
- i++)
+ i < SERIAL_RECV_DESCRIPTORS; i++)
if (descr[i].buf) {
rb = phys_to_virt((u32) descr[i].buf)
- - sizeof *rb;
+ - sizeof(*rb);
kfree(rb);
descr[i].buf = NULL;
}
@@ -1919,22 +1861,22 @@ static void serial_cris_shutdown(struct uart_port *port)
static void
serial_cris_set_termios(struct uart_port *port, struct ktermios *termios,
- struct ktermios *old)
+ struct ktermios *old)
{
- struct uart_cris_port *up = (struct uart_cris_port *)port;
+ struct uart_cris_port *up = (struct uart_cris_port *) port;
unsigned long flags;
reg_ser_rw_xoff xoff;
- reg_ser_rw_xoff_clr xoff_clr = {0};
- reg_ser_rw_tr_ctrl tx_ctrl = {0};
- reg_ser_rw_tr_dma_en tx_dma_en = {0};
- reg_ser_rw_rec_ctrl rx_ctrl = {0};
- reg_ser_rw_tr_baud_div tx_baud_div = {0};
- reg_ser_rw_rec_baud_div rx_baud_div = {0};
+ reg_ser_rw_xoff_clr xoff_clr = { 0 };
+ reg_ser_rw_tr_ctrl tx_ctrl = { 0 };
+ reg_ser_rw_tr_dma_en tx_dma_en = { 0 };
+ reg_ser_rw_rec_ctrl rx_ctrl = { 0 };
+ reg_ser_rw_tr_baud_div tx_baud_div = { 0 };
+ reg_ser_rw_rec_baud_div rx_baud_div = { 0 };
reg_ser_r_stat_din rstat;
- int baud;
+ int baud;
if (old &&
- termios->c_cflag == old->c_cflag &&
+ termios->c_cflag == old->c_cflag &&
termios->c_iflag == old->c_iflag)
return;
@@ -1950,16 +1892,15 @@ serial_cris_set_termios(struct uart_port *port, struct
ktermios *termios,
tx_ctrl.rts_setup = regk_ser_bits2;
if (termios->c_cflag & CSTOPB) {
- /* 2 stop bits. */
- tx_ctrl.rts_delay = regk_ser_del2;
- }
- else {
+ /* 2 stop bits. */
+ tx_ctrl.rts_delay = regk_ser_del2;
+ } else {
/* 1 stop bits. */
tx_ctrl.rts_delay = regk_ser_del1;
}
} else
#endif
- tx_ctrl.auto_rts = regk_ser_no;
+ tx_ctrl.auto_rts = regk_ser_no;
tx_ctrl.txd = 1;
tx_ctrl.auto_cts = 0;
/* Rx: 8 bit, no/even parity. */
@@ -1973,16 +1914,16 @@ serial_cris_set_termios(struct uart_port *port, struct
ktermios *termios,
#ifdef CONFIG_ETRAX_RS485
if (up->rs485.enabled && (up->port_type != TYPE_485FD)) {
-# ifdef CONFIG_ETRAX_RS485_DISABLE_RECEIVER
+#ifdef CONFIG_ETRAX_RS485_DISABLE_RECEIVER
rx_ctrl.half_duplex = regk_ser_yes;
-# endif
+#endif
rx_ctrl.rts_n = up->rs485.rts_after_sent ?
- regk_ser_active : regk_ser_inactive;
+ regk_ser_active : regk_ser_inactive;
} else if (up->port_type == TYPE_485FD) {
rx_ctrl.rts_n = regk_ser_active;
} else
#endif
- rx_ctrl.rts_n = regk_ser_inactive;
+ rx_ctrl.rts_n = regk_ser_inactive;
/* Common for tx and rx: 8N1. */
tx_ctrl.data_bits = regk_ser_bits8;
@@ -2008,7 +1949,7 @@ serial_cris_set_termios(struct uart_port *port, struct
ktermios *termios,
* For the console port we keep the original baudrate here. Not very
* beautiful.
*/
- if ((port != console_port) || old)
+ if ((port != console_port) || old)
baud = uart_get_baud_rate(port, termios, old, 0,
port->uartclk / 8);
else
@@ -2048,8 +1989,8 @@ serial_cris_set_termios(struct uart_port *port, struct
ktermios *termios,
} else {
if (termios->c_cflag & PARODD) {
/* Set odd parity. */
- tx_ctrl.par = regk_ser_odd;
- rx_ctrl.par = regk_ser_odd;
+ tx_ctrl.par = regk_ser_odd;
+ rx_ctrl.par = regk_ser_odd;
}
}
@@ -2094,7 +2035,7 @@ serial_cris_set_termios(struct uart_port *port, struct
ktermios *termios,
/* Actually write the control regs (if modified) to the hardware. */
- uart_update_timeout(port, termios->c_cflag, port->uartclk/8);
+ uart_update_timeout(port, termios->c_cflag, port->uartclk / 8);
MODIFY_REG(up->regi_ser, rw_rec_baud_div, rx_baud_div);
MODIFY_REG(up->regi_ser, rw_rec_ctrl, rx_ctrl);
@@ -2126,8 +2067,7 @@ serial_cris_set_termios(struct uart_port *port, struct
ktermios *termios,
spin_unlock_irqrestore(&up->port.lock, flags);
}
-static const char *
-serial_cris_type(struct uart_port *port)
+static const char *serial_cris_type(struct uart_port *port)
{
return "CRISv32";
}
@@ -2143,13 +2083,15 @@ static int serial_cris_request_port(struct uart_port
*port)
static void serial_cris_config_port(struct uart_port *port, int flags)
{
- struct uart_cris_port *up = (struct uart_cris_port *)port;
+ struct uart_cris_port *up = (struct uart_cris_port *) port;
+
up->port.type = PORT_CRIS;
}
#if defined(CONFIG_ETRAX_RS485)
-static void cris_set_rs485_mode(struct uart_cris_port* up) {
+static void cris_set_rs485_mode(struct uart_cris_port *up)
+{
reg_ser_rw_tr_ctrl tr_ctrl;
reg_ser_rw_rec_ctrl rec_ctrl;
reg_scope_instances regi_ser = up->regi_ser;
@@ -2165,7 +2107,7 @@ static void cris_set_rs485_mode(struct uart_cris_port*
up) {
if (up->rs485.enabled) {
tr_ctrl.auto_rts = regk_ser_yes;
rec_ctrl.rts_n = up->rs485.rts_after_sent ?
- regk_ser_active : regk_ser_inactive;
+ regk_ser_active : regk_ser_inactive;
}
/* Set port to RS-232 mode */
else {
@@ -2179,8 +2121,7 @@ static void cris_set_rs485_mode(struct uart_cris_port*
up) {
}
/* Enable/disable RS-485 mode on selected port. */
-static int
-cris_enable_rs485(struct uart_cris_port* up, struct rs485_control *r)
+static int cris_enable_rs485(struct uart_cris_port *up, struct rs485_control
*r)
{
if (up->port_type == TYPE_485FD)
/* Port in 485FD mode can not chage mode */
@@ -2190,9 +2131,9 @@ cris_enable_rs485(struct uart_cris_port* up, struct
rs485_control *r)
up->rs485.rts_on_send = 0x01 & r->rts_on_send;
up->rs485.rts_after_sent = 0x01 & r->rts_after_sent;
up->rs485.delay_rts_before_send = r->delay_rts_before_send;
-
+
cris_set_rs485_mode(up);
- out:
+out:
return 0;
}
@@ -2201,7 +2142,7 @@ cris_enable_rs485(struct uart_cris_port* up, struct
rs485_control *r)
* in 485 mode after the data has been sent.
*/
static int
-cris_write_rs485(struct uart_cris_port *up, const unsigned char* buf, int
count)
+cris_write_rs485(struct uart_cris_port *up, const unsigned char *buf, int
count)
{
up->rs485.enabled = 1;
@@ -2209,7 +2150,9 @@ cris_write_rs485(struct uart_cris_port *up, const
unsigned char* buf, int count)
cris_set_rs485_mode(up);
/* Send the data */
- count =
serial_cris_driver.tty_driver->ops->write(up->port.state->port.tty, buf, count);
+ count =
+ serial_cris_driver.tty_driver->ops->write(up->port.state->port.tty,
+ buf, count);
return count;
}
@@ -2217,73 +2160,82 @@ cris_write_rs485(struct uart_cris_port *up, const
unsigned char* buf, int count)
#endif /* CONFIG_ETRAX_RS485 */
static int serial_cris_ioctl(struct uart_port *port, unsigned int cmd,
- unsigned long arg)
+ unsigned long arg)
{
#if defined(CONFIG_ETRAX_RS485)
- struct uart_cris_port *up = (struct uart_cris_port *)port;
+ struct uart_cris_port *up = (struct uart_cris_port *) port;
switch (cmd) {
- case TIOCSRS485: {
- struct serial_rs485 in;
- struct rs485_control rs485ctrl;
- if (copy_from_user(&in, (struct serial_rs485 *)cmd,
- sizeof(rs485ctrl)))
- return -EFAULT;
- rs485ctrl.rts_on_send = in.flags & SER_RS485_RTS_ON_SEND;
- rs485ctrl.rts_after_sent = in.flags & SER_RS485_RTS_AFTER_SEND;
- rs485ctrl.enabled = in.flags & SER_RS485_ENABLED;
- rs485ctrl.delay_rts_before_send = in.delay_rts_before_send;
-
- return cris_enable_rs485(up, &rs485ctrl);
- }
+ case TIOCSRS485:{
+ struct serial_rs485 in;
+ struct rs485_control rs485ctrl;
+
+ if (copy_from_user(&in, (struct serial_rs485 *) cmd,
+ sizeof(rs485ctrl)))
+ return -EFAULT;
+ rs485ctrl.rts_on_send =
+ in.flags & SER_RS485_RTS_ON_SEND;
+ rs485ctrl.rts_after_sent =
+ in.flags & SER_RS485_RTS_AFTER_SEND;
+ rs485ctrl.enabled = in.flags & SER_RS485_ENABLED;
+ rs485ctrl.delay_rts_before_send =
+ in.delay_rts_before_send;
+
+ return cris_enable_rs485(up, &rs485ctrl);
+ }
- case TIOCSERSETRS485: {
- struct rs485_control rs485ctrl;
- if (copy_from_user(&rs485ctrl, (struct rs485_control*) arg,
- sizeof(rs485ctrl)))
- return -EFAULT;
+ case TIOCSERSETRS485:{
+ struct rs485_control rs485ctrl;
- return cris_enable_rs485(up, &rs485ctrl);
- }
+ if (copy_from_user
+ (&rs485ctrl, (struct rs485_control *) arg,
+ sizeof(rs485ctrl)))
+ return -EFAULT;
- case TIOCSERWRRS485: {
- struct rs485_write rs485wr;
- if (copy_from_user(&rs485wr, (struct rs485_write*)arg,
- sizeof(rs485wr)))
- return -EFAULT;
+ return cris_enable_rs485(up, &rs485ctrl);
+ }
- return cris_write_rs485(up, rs485wr.outc, rs485wr.outc_size);
- }
+ case TIOCSERWRRS485:{
+ struct rs485_write rs485wr;
- case TIOCSERSETRS485FD: {
- reg_scope_instances regi_ser = up->regi_ser;
- reg_ser_rw_rec_ctrl rec_ctrl = REG_RD(ser, regi_ser,
rw_rec_ctrl);
+ if (copy_from_user(&rs485wr, (struct rs485_write *) arg,
+ sizeof(rs485wr)))
+ return -EFAULT;
- if (arg)
- rec_ctrl.half_duplex = regk_ser_no;
- else
- rec_ctrl.half_duplex = regk_ser_yes;
+ return cris_write_rs485(up, rs485wr.outc,
+ rs485wr.outc_size);
+ }
- REG_WR(ser, regi_ser, rw_rec_ctrl, rec_ctrl);
- return 0;
- }
+ case TIOCSERSETRS485FD:{
+ reg_scope_instances regi_ser = up->regi_ser;
+ reg_ser_rw_rec_ctrl rec_ctrl =
+ REG_RD(ser, regi_ser, rw_rec_ctrl);
+
+ if (arg)
+ rec_ctrl.half_duplex = regk_ser_no;
+ else
+ rec_ctrl.half_duplex = regk_ser_yes;
- case TIOCSERSETDIVISOR: {
- reg_ser_rw_tr_baud_div tx_baud_div = {0};
- reg_ser_rw_rec_baud_div rx_baud_div = {0};
+ REG_WR(ser, regi_ser, rw_rec_ctrl, rec_ctrl);
+ return 0;
+ }
- /* divisor must be >= 8 */
- if (arg < 8)
- return -EINVAL;
+ case TIOCSERSETDIVISOR:{
+ reg_ser_rw_tr_baud_div tx_baud_div = { 0 };
+ reg_ser_rw_rec_baud_div rx_baud_div = { 0 };
- tx_baud_div.div = arg;
- rx_baud_div.div = tx_baud_div.div; /* same as tx. */
+ /* divisor must be >= 8 */
+ if (arg < 8)
+ return -EINVAL;
- MODIFY_REG(up->regi_ser, rw_rec_baud_div, rx_baud_div);
- MODIFY_REG(up->regi_ser, rw_tr_baud_div, tx_baud_div);
+ tx_baud_div.div = arg;
+ rx_baud_div.div = tx_baud_div.div; /* same as tx. */
- return 0;
- }
+ MODIFY_REG(up->regi_ser, rw_rec_baud_div, rx_baud_div);
+ MODIFY_REG(up->regi_ser, rw_tr_baud_div, tx_baud_div);
+
+ return 0;
+ }
default:
return -ENOIOCTLCMD;
@@ -2296,23 +2248,23 @@ static int serial_cris_ioctl(struct uart_port *port,
unsigned int cmd,
}
static const struct uart_ops serial_cris_pops = {
- .tx_empty = serial_cris_tx_empty,
- .set_mctrl = serial_cris_set_mctrl,
- .get_mctrl = serial_cris_get_mctrl,
- .stop_tx = serial_cris_stop_tx,
- .start_tx = serial_cris_start_tx,
- .send_xchar = serial_cris_send_xchar,
- .stop_rx = serial_cris_stop_rx,
- .enable_ms = serial_cris_enable_ms,
- .break_ctl = serial_cris_break_ctl,
- .startup = serial_cris_startup,
- .shutdown = serial_cris_shutdown,
- .set_termios = serial_cris_set_termios,
- .type = serial_cris_type,
- .release_port = serial_cris_release_port,
- .request_port = serial_cris_request_port,
- .config_port = serial_cris_config_port,
- .ioctl = serial_cris_ioctl,
+ .tx_empty = serial_cris_tx_empty,
+ .set_mctrl = serial_cris_set_mctrl,
+ .get_mctrl = serial_cris_get_mctrl,
+ .stop_tx = serial_cris_stop_tx,
+ .start_tx = serial_cris_start_tx,
+ .send_xchar = serial_cris_send_xchar,
+ .stop_rx = serial_cris_stop_rx,
+ .enable_ms = serial_cris_enable_ms,
+ .break_ctl = serial_cris_break_ctl,
+ .startup = serial_cris_startup,
+ .shutdown = serial_cris_shutdown,
+ .set_termios = serial_cris_set_termios,
+ .type = serial_cris_type,
+ .release_port = serial_cris_release_port,
+ .request_port = serial_cris_request_port,
+ .config_port = serial_cris_config_port,
+ .ioctl = serial_cris_ioctl,
#ifdef CONFIG_CONSOLE_POLL
.poll_get_char = serial_artpec_get_poll_char,
.poll_put_char = serial_artpec_put_poll_char,
@@ -2350,8 +2302,9 @@ static void serial_cris_stop_tx_dummy(struct uart_port
*port)
static void serial_cris_start_tx_dummy(struct uart_port *port)
{
/* Discard outbound characters. */
- struct uart_cris_port *up = (struct uart_cris_port *)port;
+ struct uart_cris_port *up = (struct uart_cris_port *) port;
struct circ_buf *xmit = &up->port.state->xmit;
+
xmit->tail = xmit->head;
uart_write_wakeup(port);
}
@@ -2360,8 +2313,7 @@ static void serial_cris_start_tx_dummy(struct uart_port
*port)
#define serial_cris_enable_ms_dummy serial_cris_stop_tx_dummy
-static void serial_cris_break_ctl_dummy(struct uart_port *port,
- int break_state)
+static void serial_cris_break_ctl_dummy(struct uart_port *port, int
break_state)
{
}
@@ -2389,34 +2341,34 @@ static const struct uart_ops serial_cris_dummy_pops = {
* For the ones we don't define here, the default (usually meaning
* "unimplemented") makes sense.
*/
- .tx_empty = serial_cris_tx_empty_dummy,
- .set_mctrl = serial_cris_set_mctrl_dummy,
- .get_mctrl = serial_cris_get_mctrl_dummy,
- .stop_tx = serial_cris_stop_tx_dummy,
- .start_tx = serial_cris_start_tx_dummy,
- .stop_rx = serial_cris_stop_rx_dummy,
- .enable_ms = serial_cris_enable_ms_dummy,
- .break_ctl = serial_cris_break_ctl_dummy,
- .startup = serial_cris_startup_dummy,
- .shutdown = serial_cris_shutdown_dummy,
- .set_termios = serial_cris_set_termios_dummy,
+ .tx_empty = serial_cris_tx_empty_dummy,
+ .set_mctrl = serial_cris_set_mctrl_dummy,
+ .get_mctrl = serial_cris_get_mctrl_dummy,
+ .stop_tx = serial_cris_stop_tx_dummy,
+ .start_tx = serial_cris_start_tx_dummy,
+ .stop_rx = serial_cris_stop_rx_dummy,
+ .enable_ms = serial_cris_enable_ms_dummy,
+ .break_ctl = serial_cris_break_ctl_dummy,
+ .startup = serial_cris_startup_dummy,
+ .shutdown = serial_cris_shutdown_dummy,
+ .set_termios = serial_cris_set_termios_dummy,
/* This one we keep the same. */
- .type = serial_cris_type,
+ .type = serial_cris_type,
- .release_port = serial_cris_release_port_dummy,
- .request_port = serial_cris_request_port_dummy,
+ .release_port = serial_cris_release_port_dummy,
+ .request_port = serial_cris_request_port_dummy,
/*
* This one we keep the same too, as long as it doesn't do
* anything else but to set the type.
*/
- .config_port = serial_cris_config_port,
+ .config_port = serial_cris_config_port,
};
static void cris_serial_port_init(struct uart_port *port, int line)
{
- struct uart_cris_port *up = (struct uart_cris_port *)port;
+ struct uart_cris_port *up = (struct uart_cris_port *) port;
static int first = 1;
if (up->initialized)
@@ -2425,8 +2377,7 @@ static void cris_serial_port_init(struct uart_port *port,
int line)
port->line = line;
spin_lock_init(&port->lock);
port->ops =
- up->regi_ser == 0 ? &serial_cris_dummy_pops :
- &serial_cris_pops;
+ up->regi_ser == 0 ? &serial_cris_dummy_pops : &serial_cris_pops;
port->irq = up->irq;
port->iobase = up->regi_ser ? up->regi_ser : 1;
port->uartclk = 29493000;
@@ -2475,11 +2426,12 @@ static void cris_serial_port_init(struct uart_port
*port, int line)
static int __init serial_cris_init(void)
{
int ret, i;
- printk(KERN_INFO "Serial: CRISv32 driver $Revision: 1.109 $ ");
+
+ pr_info("Serial: CRISv32 driver Revision: 1.109");
ret = uart_register_driver(&serial_cris_driver);
if (ret)
- goto out;
+ return ret;
for (i = 0; i < UART_NR; i++) {
if (serial_cris_ports[i].used) {
@@ -2488,34 +2440,37 @@ static int __init serial_cris_init(void)
reg_ser_rw_rec_ctrl rec_ctrl;
/* Make sure that the RTS pin stays low when allocating
- * pins for a port in 485 mode.
+ * pins for a port in 485 mode.
*/
if (serial_cris_ports[i].port_type > TYPE_232) {
- rec_ctrl = REG_RD(ser,
serial_cris_ports[i].regi_ser, rw_rec_ctrl);
+ rec_ctrl =
+ REG_RD(ser, serial_cris_ports[i].regi_ser,
+ rw_rec_ctrl);
rec_ctrl.rts_n = regk_ser_active;
- REG_WR(ser, serial_cris_ports[i].regi_ser,
rw_rec_ctrl, rec_ctrl);
+ REG_WR(ser, serial_cris_ports[i].regi_ser,
+ rw_rec_ctrl, rec_ctrl);
}
#endif
switch (serial_cris_ports[i].regi_ser) {
- case regi_ser0:
- break;
+ case regi_ser0:
+ break;
case regi_ser1:
if (crisv32_pinmux_alloc_fixed(pinmux_ser1)) {
- printk("Failed to allocate pins for
ser1, disable port\n");
+ pr_err("Failed to allocate pins for
ser1, disable port\n");
serial_cris_ports[i].used = 0;
continue;
}
break;
case regi_ser2:
if (crisv32_pinmux_alloc_fixed(pinmux_ser2)) {
- printk("Failed to allocate pins for
ser2, disable port\n");
+ pr_err("Failed to allocate pins for
ser2, disable port\n");
serial_cris_ports[i].used = 0;
continue;
}
break;
case regi_ser3:
if (crisv32_pinmux_alloc_fixed(pinmux_ser3)) {
- printk("Failed to allocate pins for
ser3, disable port\n");
+ pr_err("Failed to allocate pins for
ser3, disable port\n");
serial_cris_ports[i].used = 0;
continue;
}
@@ -2523,14 +2478,15 @@ static int __init serial_cris_init(void)
#if CONFIG_ETRAX_SERIAL_PORTS == 5
case regi_ser4:
if (crisv32_pinmux_alloc_fixed(pinmux_ser4)) {
- printk("Failed to allocate pins for
ser4, disable port\n");
+ pr_err("Failed to allocate pins for
ser4, disable port\n");
serial_cris_ports[i].used = 0;
continue;
}
break;
#endif
default:
- printk("Error: No such serial port (%d) \n",
serial_cris_ports[i].regi_ser);
+ pr_err("No such serial port (%d)\n",
+ serial_cris_ports[i].regi_ser);
serial_cris_ports[i].used = 0;
break;
}
@@ -2541,14 +2497,13 @@ static int __init serial_cris_init(void)
uart_add_one_port(&serial_cris_driver, port);
}
}
-
-out:
- return ret;
+ return 0;
}
static void __exit serial_cris_exit(void)
{
int i;
+
for (i = 0; i < UART_NR; i++)
if (serial_cris_ports[i].used) {
switch (serial_cris_ports[i].regi_ser) {
@@ -2567,12 +2522,13 @@ static void __exit serial_cris_exit(void)
break;
#endif
default:
- printk("Error: No such serial port (%d) \n",
serial_cris_ports[i].regi_ser);
+ pr_err("No such serial port (%d)\n",
+ serial_cris_ports[i].regi_ser);
serial_cris_ports[i].used = 0;
break;
}
uart_remove_one_port(&serial_cris_driver,
- &serial_cris_ports[i].port);
+ &serial_cris_ports[i].port);
}
uart_unregister_driver(&serial_cris_driver);
}
--
1.9.1
--
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