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Date: Thu, 7 Apr 2022 22:45:21 +0800
From: kernel test robot <lkp@...el.com>
To: Jiri Slaby <jslaby@...e.cz>
Cc: kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org
Subject: [jirislaby:devel 45/50] drivers/tty/serial/samsung_tty.c:285:45:
error: 'struct uart_state' has no member named 'xmit'
tree: https://git.kernel.org/pub/scm/linux/kernel/git/jirislaby/linux.git devel
head: 100a309b4d75252d31b3ae0e69d6469ac0e0f522
commit: 977858b1b952395763e2a47a94e69dd0b2f22a42 [45/50] tty: serial, use kfifo
config: riscv-allmodconfig (https://download.01.org/0day-ci/archive/20220407/202204072258.fsF8e9At-lkp@intel.com/config)
compiler: riscv64-linux-gcc (GCC) 11.2.0
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# https://git.kernel.org/pub/scm/linux/kernel/git/jirislaby/linux.git/commit/?id=977858b1b952395763e2a47a94e69dd0b2f22a42
git remote add jirislaby https://git.kernel.org/pub/scm/linux/kernel/git/jirislaby/linux.git
git fetch --no-tags jirislaby devel
git checkout 977858b1b952395763e2a47a94e69dd0b2f22a42
# save the config file to linux build tree
mkdir build_dir
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=riscv SHELL=/bin/bash drivers/tty/serial/
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>
All errors (new ones prefixed by >>):
drivers/tty/serial/samsung_tty.c: In function 's3c24xx_serial_stop_tx':
>> drivers/tty/serial/samsung_tty.c:285:45: error: 'struct uart_state' has no member named 'xmit'
285 | struct circ_buf *xmit = &port->state->xmit;
| ^~
>> drivers/tty/serial/samsung_tty.c:313:21: error: invalid use of undefined type 'struct circ_buf'
313 | xmit->tail = (xmit->tail + count) & (UART_XMIT_SIZE - 1);
| ^~
drivers/tty/serial/samsung_tty.c:313:35: error: invalid use of undefined type 'struct circ_buf'
313 | xmit->tail = (xmit->tail + count) & (UART_XMIT_SIZE - 1);
| ^~
drivers/tty/serial/samsung_tty.c: In function 's3c24xx_serial_tx_dma_complete':
drivers/tty/serial/samsung_tty.c:332:45: error: 'struct uart_state' has no member named 'xmit'
332 | struct circ_buf *xmit = &port->state->xmit;
| ^~
drivers/tty/serial/samsung_tty.c:348:13: error: invalid use of undefined type 'struct circ_buf'
348 | xmit->tail = (xmit->tail + count) & (UART_XMIT_SIZE - 1);
| ^~
drivers/tty/serial/samsung_tty.c:348:27: error: invalid use of undefined type 'struct circ_buf'
348 | xmit->tail = (xmit->tail + count) & (UART_XMIT_SIZE - 1);
| ^~
>> drivers/tty/serial/samsung_tty.c:352:13: error: implicit declaration of function 'uart_circ_chars_pending' [-Werror=implicit-function-declaration]
352 | if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
| ^~~~~~~~~~~~~~~~~~~~~~~
drivers/tty/serial/samsung_tty.c: In function 's3c24xx_serial_start_tx_dma':
drivers/tty/serial/samsung_tty.c:439:45: error: 'struct uart_state' has no member named 'xmit'
439 | struct circ_buf *xmit = &port->state->xmit;
| ^~
drivers/tty/serial/samsung_tty.c:446:52: error: invalid use of undefined type 'struct circ_buf'
446 | dma->tx_transfer_addr = dma->tx_addr + xmit->tail;
| ^~
drivers/tty/serial/samsung_tty.c: In function 's3c24xx_serial_start_next_tx':
drivers/tty/serial/samsung_tty.c:473:45: error: 'struct uart_state' has no member named 'xmit'
473 | struct circ_buf *xmit = &port->state->xmit;
| ^~
>> drivers/tty/serial/samsung_tty.c:477:17: error: implicit declaration of function 'CIRC_CNT_TO_END' [-Werror=implicit-function-declaration]
477 | count = CIRC_CNT_TO_END(xmit->head, xmit->tail, UART_XMIT_SIZE);
| ^~~~~~~~~~~~~~~
drivers/tty/serial/samsung_tty.c:477:37: error: invalid use of undefined type 'struct circ_buf'
477 | count = CIRC_CNT_TO_END(xmit->head, xmit->tail, UART_XMIT_SIZE);
| ^~
drivers/tty/serial/samsung_tty.c:477:49: error: invalid use of undefined type 'struct circ_buf'
477 | count = CIRC_CNT_TO_END(xmit->head, xmit->tail, UART_XMIT_SIZE);
| ^~
drivers/tty/serial/samsung_tty.c:486:17: error: invalid use of undefined type 'struct circ_buf'
486 | xmit->tail & (dma_get_cache_alignment() - 1))
| ^~
drivers/tty/serial/samsung_tty.c: In function 's3c24xx_serial_start_tx':
drivers/tty/serial/samsung_tty.c:495:45: error: 'struct uart_state' has no member named 'xmit'
495 | struct circ_buf *xmit = &port->state->xmit;
| ^~
>> drivers/tty/serial/samsung_tty.c:507:22: error: implicit declaration of function 'uart_circ_empty' [-Werror=implicit-function-declaration]
507 | if (!uart_circ_empty(xmit) && !ourport->tx_in_progress)
| ^~~~~~~~~~~~~~~
drivers/tty/serial/samsung_tty.c: In function 's3c24xx_serial_tx_chars':
drivers/tty/serial/samsung_tty.c:871:45: error: 'struct uart_state' has no member named 'xmit'
871 | struct circ_buf *xmit = &port->state->xmit;
| ^~
drivers/tty/serial/samsung_tty.c:874:37: error: invalid use of undefined type 'struct circ_buf'
874 | count = CIRC_CNT_TO_END(xmit->head, xmit->tail, UART_XMIT_SIZE);
| ^~
drivers/tty/serial/samsung_tty.c:874:49: error: invalid use of undefined type 'struct circ_buf'
874 | count = CIRC_CNT_TO_END(xmit->head, xmit->tail, UART_XMIT_SIZE);
| ^~
drivers/tty/serial/samsung_tty.c:879:30: error: invalid use of undefined type 'struct circ_buf'
879 | (xmit->tail & (dma_get_cache_alignment() - 1));
| ^~
drivers/tty/serial/samsung_tty.c:913:48: error: invalid use of undefined type 'struct circ_buf'
913 | wr_reg(port, S3C2410_UTXH, xmit->buf[xmit->tail]);
| ^~
drivers/tty/serial/samsung_tty.c:913:58: error: invalid use of undefined type 'struct circ_buf'
913 | wr_reg(port, S3C2410_UTXH, xmit->buf[xmit->tail]);
| ^~
drivers/tty/serial/samsung_tty.c:914:21: error: invalid use of undefined type 'struct circ_buf'
914 | xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
| ^~
drivers/tty/serial/samsung_tty.c:914:35: error: invalid use of undefined type 'struct circ_buf'
914 | xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
| ^~
In file included from drivers/tty/serial/samsung_tty.c:25:
drivers/tty/serial/samsung_tty.c: In function 's3c24xx_serial_request_dma':
drivers/tty/serial/samsung_tty.c:1115:52: error: 'struct uart_state' has no member named 'xmit'
1115 | p->port.state->xmit.buf, UART_XMIT_SIZE,
| ^~
include/linux/dma-mapping.h:406:60: note: in definition of macro 'dma_map_single'
406 | #define dma_map_single(d, a, s, r) dma_map_single_attrs(d, a, s, r, 0)
| ^
cc1: some warnings being treated as errors
--
drivers/tty/serial/max310x.c: In function 'max310x_handle_tx':
>> drivers/tty/serial/max310x.c:750:45: error: 'struct uart_state' has no member named 'xmit'
750 | struct circ_buf *xmit = &port->state->xmit;
| ^~
>> drivers/tty/serial/max310x.c:760:13: error: implicit declaration of function 'uart_circ_empty' [-Werror=implicit-function-declaration]
760 | if (uart_circ_empty(xmit) || uart_tx_stopped(port))
| ^~~~~~~~~~~~~~~
>> drivers/tty/serial/max310x.c:764:19: error: implicit declaration of function 'uart_circ_chars_pending' [-Werror=implicit-function-declaration]
764 | to_send = uart_circ_chars_pending(xmit);
| ^~~~~~~~~~~~~~~~~~~~~~~
>> drivers/tty/serial/max310x.c:765:21: error: implicit declaration of function 'CIRC_CNT_TO_END' [-Werror=implicit-function-declaration]
765 | until_end = CIRC_CNT_TO_END(xmit->head, xmit->tail, UART_XMIT_SIZE);
| ^~~~~~~~~~~~~~~
>> drivers/tty/serial/max310x.c:765:41: error: invalid use of undefined type 'struct circ_buf'
765 | until_end = CIRC_CNT_TO_END(xmit->head, xmit->tail, UART_XMIT_SIZE);
| ^~
drivers/tty/serial/max310x.c:765:53: error: invalid use of undefined type 'struct circ_buf'
765 | until_end = CIRC_CNT_TO_END(xmit->head, xmit->tail, UART_XMIT_SIZE);
| ^~
drivers/tty/serial/max310x.c:775:55: error: invalid use of undefined type 'struct circ_buf'
775 | max310x_batch_write(port, xmit->buf + xmit->tail, until_end);
| ^~
drivers/tty/serial/max310x.c:775:67: error: invalid use of undefined type 'struct circ_buf'
775 | max310x_batch_write(port, xmit->buf + xmit->tail, until_end);
| ^~
drivers/tty/serial/max310x.c:776:55: error: invalid use of undefined type 'struct circ_buf'
776 | max310x_batch_write(port, xmit->buf, to_send - until_end);
| ^~
drivers/tty/serial/max310x.c:778:55: error: invalid use of undefined type 'struct circ_buf'
778 | max310x_batch_write(port, xmit->buf + xmit->tail, to_send);
| ^~
drivers/tty/serial/max310x.c:778:67: error: invalid use of undefined type 'struct circ_buf'
778 | max310x_batch_write(port, xmit->buf + xmit->tail, to_send);
| ^~
drivers/tty/serial/max310x.c:783:21: error: invalid use of undefined type 'struct circ_buf'
783 | xmit->tail = (xmit->tail + to_send) & (UART_XMIT_SIZE - 1);
| ^~
drivers/tty/serial/max310x.c:783:35: error: invalid use of undefined type 'struct circ_buf'
783 | xmit->tail = (xmit->tail + to_send) & (UART_XMIT_SIZE - 1);
| ^~
cc1: some warnings being treated as errors
--
drivers/tty/serial/sh-sci.c: In function 'sci_start_tx':
drivers/tty/serial/sh-sci.c:588:28: error: implicit declaration of function 'uart_circ_empty' [-Werror=implicit-function-declaration]
588 | if (s->chan_tx && !uart_circ_empty(&s->port.state->xmit) &&
| ^~~~~~~~~~~~~~~
>> drivers/tty/serial/sh-sci.c:588:58: error: 'struct uart_state' has no member named 'xmit'
588 | if (s->chan_tx && !uart_circ_empty(&s->port.state->xmit) &&
| ^~
drivers/tty/serial/sh-sci.c: In function 'sci_transmit_chars':
drivers/tty/serial/sh-sci.c:807:45: error: 'struct uart_state' has no member named 'xmit'
807 | struct circ_buf *xmit = &port->state->xmit;
| ^~
drivers/tty/serial/sh-sci.c:833:33: error: invalid use of undefined type 'struct circ_buf'
833 | c = xmit->buf[xmit->tail];
| ^~
drivers/tty/serial/sh-sci.c:833:43: error: invalid use of undefined type 'struct circ_buf'
833 | c = xmit->buf[xmit->tail];
| ^~
drivers/tty/serial/sh-sci.c:834:29: error: invalid use of undefined type 'struct circ_buf'
834 | xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
| ^~
drivers/tty/serial/sh-sci.c:834:43: error: invalid use of undefined type 'struct circ_buf'
834 | xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
| ^~
drivers/tty/serial/sh-sci.c:846:13: error: implicit declaration of function 'uart_circ_chars_pending' [-Werror=implicit-function-declaration]
846 | if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
| ^~~~~~~~~~~~~~~~~~~~~~~
drivers/tty/serial/sh-sci.c: In function 'sci_dma_tx_complete':
drivers/tty/serial/sh-sci.c:1177:45: error: 'struct uart_state' has no member named 'xmit'
1177 | struct circ_buf *xmit = &port->state->xmit;
| ^~
drivers/tty/serial/sh-sci.c:1184:13: error: invalid use of undefined type 'struct circ_buf'
1184 | xmit->tail += s->tx_dma_len;
| ^~
drivers/tty/serial/sh-sci.c:1185:13: error: invalid use of undefined type 'struct circ_buf'
1185 | xmit->tail &= UART_XMIT_SIZE - 1;
| ^~
drivers/tty/serial/sh-sci.c: In function 'sci_dma_tx_work_fn':
drivers/tty/serial/sh-sci.c:1395:45: error: 'struct uart_state' has no member named 'xmit'
1395 | struct circ_buf *xmit = &port->state->xmit;
| ^~
drivers/tty/serial/sh-sci.c:1408:20: error: invalid use of undefined type 'struct circ_buf'
1408 | head = xmit->head;
| ^~
drivers/tty/serial/sh-sci.c:1409:20: error: invalid use of undefined type 'struct circ_buf'
1409 | tail = xmit->tail;
| ^~
In file included from include/linux/kernel.h:26,
from include/linux/clk.h:13,
from drivers/tty/serial/sh-sci.c:20:
>> drivers/tty/serial/sh-sci.c:1412:17: error: implicit declaration of function 'CIRC_CNT' [-Werror=implicit-function-declaration]
1412 | CIRC_CNT(head, tail, UART_XMIT_SIZE),
| ^~~~~~~~
include/linux/minmax.h:20:28: note: in definition of macro '__typecheck'
20 | (!!(sizeof((typeof(x) *)1 == (typeof(y) *)1)))
| ^
include/linux/minmax.h:36:31: note: in expansion of macro '__safe_cmp'
36 | __builtin_choose_expr(__safe_cmp(x, y), \
| ^~~~~~~~~~
include/linux/minmax.h:104:33: note: in expansion of macro '__careful_cmp'
104 | #define min_t(type, x, y) __careful_cmp((type)(x), (type)(y), <)
| ^~~~~~~~~~~~~
drivers/tty/serial/sh-sci.c:1411:25: note: in expansion of macro 'min_t'
1411 | s->tx_dma_len = min_t(unsigned int,
| ^~~~~
>> drivers/tty/serial/sh-sci.c:1413:17: error: implicit declaration of function 'CIRC_CNT_TO_END' [-Werror=implicit-function-declaration]
1413 | CIRC_CNT_TO_END(head, tail, UART_XMIT_SIZE));
| ^~~~~~~~~~~~~~~
include/linux/minmax.h:20:46: note: in definition of macro '__typecheck'
20 | (!!(sizeof((typeof(x) *)1 == (typeof(y) *)1)))
| ^
include/linux/minmax.h:36:31: note: in expansion of macro '__safe_cmp'
36 | __builtin_choose_expr(__safe_cmp(x, y), \
| ^~~~~~~~~~
include/linux/minmax.h:104:33: note: in expansion of macro '__careful_cmp'
104 | #define min_t(type, x, y) __careful_cmp((type)(x), (type)(y), <)
| ^~~~~~~~~~~~~
drivers/tty/serial/sh-sci.c:1411:25: note: in expansion of macro 'min_t'
1411 | s->tx_dma_len = min_t(unsigned int,
| ^~~~~
In file included from include/linux/printk.h:555,
from include/linux/kernel.h:29,
from include/linux/clk.h:13,
from drivers/tty/serial/sh-sci.c:20:
drivers/tty/serial/sh-sci.c:1443:31: error: invalid use of undefined type 'struct circ_buf'
1443 | __func__, xmit->buf, tail, head, s->cookie_tx);
| ^~
include/linux/dynamic_debug.h:134:29: note: in definition of macro '__dynamic_func_call'
134 | func(&id, ##__VA_ARGS__); \
| ^~~~~~~~~~~
include/linux/dynamic_debug.h:166:9: note: in expansion of macro '_dynamic_func_call'
166 | _dynamic_func_call(fmt,__dynamic_dev_dbg, \
| ^~~~~~~~~~~~~~~~~~
include/linux/dev_printk.h:155:9: note: in expansion of macro 'dynamic_dev_dbg'
155 | dynamic_dev_dbg(dev, dev_fmt(fmt), ##__VA_ARGS__)
| ^~~~~~~~~~~~~~~
drivers/tty/serial/sh-sci.c:1442:9: note: in expansion of macro 'dev_dbg'
1442 | dev_dbg(port->dev, "%s: %p: %d...%d, cookie %d\n",
| ^~~~~~~
In file included from drivers/tty/serial/sh-sci.c:26:
drivers/tty/serial/sh-sci.c: In function 'sci_request_dma':
drivers/tty/serial/sh-sci.c:1589:60: error: 'struct uart_state' has no member named 'xmit'
1589 | port->state->xmit.buf,
| ^~
include/linux/dma-mapping.h:406:60: note: in definition of macro 'dma_map_single'
406 | #define dma_map_single(d, a, s, r) dma_map_single_attrs(d, a, s, r, 0)
| ^
In file included from include/linux/printk.h:555,
from include/linux/kernel.h:29,
from include/linux/clk.h:13,
from drivers/tty/serial/sh-sci.c:20:
drivers/tty/serial/sh-sci.c:1598:44: error: 'struct uart_state' has no member named 'xmit'
1598 | port->state->xmit.buf, &s->tx_dma_addr);
| ^~
include/linux/dynamic_debug.h:134:29: note: in definition of macro '__dynamic_func_call'
134 | func(&id, ##__VA_ARGS__); \
| ^~~~~~~~~~~
include/linux/dynamic_debug.h:166:9: note: in expansion of macro '_dynamic_func_call'
166 | _dynamic_func_call(fmt,__dynamic_dev_dbg, \
| ^~~~~~~~~~~~~~~~~~
include/linux/dev_printk.h:155:9: note: in expansion of macro 'dynamic_dev_dbg'
155 | dynamic_dev_dbg(dev, dev_fmt(fmt), ##__VA_ARGS__)
| ^~~~~~~~~~~~~~~
drivers/tty/serial/sh-sci.c:1596:25: note: in expansion of macro 'dev_dbg'
1596 | dev_dbg(port->dev, "%s: mapped %lu@%p to %pad\n",
| ^~~~~~~
cc1: some warnings being treated as errors
--
drivers/tty/serial/msm_serial.c: In function 'msm_complete_tx_dma':
>> drivers/tty/serial/msm_serial.c:437:45: error: 'struct uart_state' has no member named 'xmit'
437 | struct circ_buf *xmit = &port->state->xmit;
| ^~
>> drivers/tty/serial/msm_serial.c:467:13: error: invalid use of undefined type 'struct circ_buf'
467 | xmit->tail += count;
| ^~
drivers/tty/serial/msm_serial.c:468:13: error: invalid use of undefined type 'struct circ_buf'
468 | xmit->tail &= UART_XMIT_SIZE - 1;
| ^~
>> drivers/tty/serial/msm_serial.c:474:13: error: implicit declaration of function 'uart_circ_chars_pending' [-Werror=implicit-function-declaration]
474 | if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
| ^~~~~~~~~~~~~~~~~~~~~~~
drivers/tty/serial/msm_serial.c: In function 'msm_handle_tx_dma':
drivers/tty/serial/msm_serial.c:484:54: error: 'struct uart_state' has no member named 'xmit'
484 | struct circ_buf *xmit = &msm_port->uart.state->xmit;
| ^~
drivers/tty/serial/msm_serial.c:491:25: error: invalid use of undefined type 'struct circ_buf'
491 | cpu_addr = &xmit->buf[xmit->tail];
| ^~
drivers/tty/serial/msm_serial.c:491:35: error: invalid use of undefined type 'struct circ_buf'
491 | cpu_addr = &xmit->buf[xmit->tail];
| ^~
drivers/tty/serial/msm_serial.c: In function 'msm_handle_tx_pio':
drivers/tty/serial/msm_serial.c:839:45: error: 'struct uart_state' has no member named 'xmit'
839 | struct circ_buf *xmit = &port->state->xmit;
| ^~
drivers/tty/serial/msm_serial.c:867:38: error: invalid use of undefined type 'struct circ_buf'
867 | buf[i] = xmit->buf[xmit->tail + i];
| ^~
drivers/tty/serial/msm_serial.c:867:48: error: invalid use of undefined type 'struct circ_buf'
867 | buf[i] = xmit->buf[xmit->tail + i];
| ^~
drivers/tty/serial/msm_serial.c:872:21: error: invalid use of undefined type 'struct circ_buf'
872 | xmit->tail = (xmit->tail + num_chars) & (UART_XMIT_SIZE - 1);
| ^~
drivers/tty/serial/msm_serial.c:872:35: error: invalid use of undefined type 'struct circ_buf'
872 | xmit->tail = (xmit->tail + num_chars) & (UART_XMIT_SIZE - 1);
| ^~
>> drivers/tty/serial/msm_serial.c:877:13: error: implicit declaration of function 'uart_circ_empty' [-Werror=implicit-function-declaration]
877 | if (uart_circ_empty(xmit))
| ^~~~~~~~~~~~~~~
drivers/tty/serial/msm_serial.c: In function 'msm_handle_tx':
drivers/tty/serial/msm_serial.c:887:54: error: 'struct uart_state' has no member named 'xmit'
887 | struct circ_buf *xmit = &msm_port->uart.state->xmit;
| ^~
>> drivers/tty/serial/msm_serial.c:916:21: error: implicit declaration of function 'CIRC_CNT_TO_END' [-Werror=implicit-function-declaration]
916 | pio_count = CIRC_CNT_TO_END(xmit->head, xmit->tail, UART_XMIT_SIZE);
| ^~~~~~~~~~~~~~~
drivers/tty/serial/msm_serial.c:916:41: error: invalid use of undefined type 'struct circ_buf'
916 | pio_count = CIRC_CNT_TO_END(xmit->head, xmit->tail, UART_XMIT_SIZE);
| ^~
drivers/tty/serial/msm_serial.c:916:53: error: invalid use of undefined type 'struct circ_buf'
916 | pio_count = CIRC_CNT_TO_END(xmit->head, xmit->tail, UART_XMIT_SIZE);
| ^~
drivers/tty/serial/msm_serial.c:917:41: error: invalid use of undefined type 'struct circ_buf'
917 | dma_count = CIRC_CNT_TO_END(xmit->head, xmit->tail, UART_XMIT_SIZE);
| ^~
drivers/tty/serial/msm_serial.c:917:53: error: invalid use of undefined type 'struct circ_buf'
917 | dma_count = CIRC_CNT_TO_END(xmit->head, xmit->tail, UART_XMIT_SIZE);
| ^~
cc1: some warnings being treated as errors
..
vim +285 drivers/tty/serial/samsung_tty.c
b497549a035c2a drivers/serial/samsung.c Ben Dooks 2008-07-03 280
b497549a035c2a drivers/serial/samsung.c Ben Dooks 2008-07-03 281 static void s3c24xx_serial_stop_tx(struct uart_port *port)
b497549a035c2a drivers/serial/samsung.c Ben Dooks 2008-07-03 282 {
b73c289cc90138 drivers/serial/samsung.c Ben Dooks 2008-10-21 283 struct s3c24xx_uart_port *ourport = to_ourport(port);
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 284 struct s3c24xx_uart_dma *dma = ourport->dma;
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 @285 struct circ_buf *xmit = &port->state->xmit;
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 286 struct dma_tx_state state;
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 287 int count;
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 288
8336240ebb248b drivers/tty/serial/samsung_tty.c Greg Kroah-Hartman 2019-12-17 289 if (!ourport->tx_enabled)
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 290 return;
b73c289cc90138 drivers/serial/samsung.c Ben Dooks 2008-10-21 291
aaf144059ba474 drivers/tty/serial/samsung_tty.c Hector Martin 2021-03-05 292 switch (ourport->info->type) {
aaf144059ba474 drivers/tty/serial/samsung_tty.c Hector Martin 2021-03-05 293 case TYPE_S3C6400:
bbb5ff91225dfb drivers/tty/serial/samsung.c Matthew Leach 2016-06-22 294 s3c24xx_set_bit(port, S3C64XX_UINTM_TXD, S3C64XX_UINTM);
aaf144059ba474 drivers/tty/serial/samsung_tty.c Hector Martin 2021-03-05 295 break;
fcbba344907afe drivers/tty/serial/samsung_tty.c Hector Martin 2021-03-05 296 case TYPE_APPLE_S5L:
fcbba344907afe drivers/tty/serial/samsung_tty.c Hector Martin 2021-03-05 297 s3c24xx_clear_bit(port, APPLE_S5L_UCON_TXTHRESH_ENA, S3C2410_UCON);
fcbba344907afe drivers/tty/serial/samsung_tty.c Hector Martin 2021-03-05 298 break;
aaf144059ba474 drivers/tty/serial/samsung_tty.c Hector Martin 2021-03-05 299 default:
41609ff43005de drivers/serial/samsung.c Mark Brown 2009-04-14 300 disable_irq_nosync(ourport->tx_irq);
aaf144059ba474 drivers/tty/serial/samsung_tty.c Hector Martin 2021-03-05 301 break;
aaf144059ba474 drivers/tty/serial/samsung_tty.c Hector Martin 2021-03-05 302 }
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 303
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 304 if (dma && dma->tx_chan && ourport->tx_in_progress == S3C24XX_TX_DMA) {
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 305 dmaengine_pause(dma->tx_chan);
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 306 dmaengine_tx_status(dma->tx_chan, dma->tx_cookie, &state);
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 307 dmaengine_terminate_all(dma->tx_chan);
4fc2d3cd6d3a48 drivers/tty/serial/samsung_tty.c Tamseel Shams 2021-06-29 308 dma_sync_single_for_cpu(dma->tx_chan->device->dev,
4fc2d3cd6d3a48 drivers/tty/serial/samsung_tty.c Tamseel Shams 2021-06-29 309 dma->tx_transfer_addr, dma->tx_size,
4fc2d3cd6d3a48 drivers/tty/serial/samsung_tty.c Tamseel Shams 2021-06-29 310 DMA_TO_DEVICE);
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 311 async_tx_ack(dma->tx_desc);
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 312 count = dma->tx_bytes_requested - state.residue;
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 @313 xmit->tail = (xmit->tail + count) & (UART_XMIT_SIZE - 1);
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 314 port->icount.tx += count;
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 315 }
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 316
8336240ebb248b drivers/tty/serial/samsung_tty.c Greg Kroah-Hartman 2019-12-17 317 ourport->tx_enabled = 0;
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 318 ourport->tx_in_progress = 0;
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 319
b497549a035c2a drivers/serial/samsung.c Ben Dooks 2008-07-03 320 if (port->flags & UPF_CONS_FLOW)
b497549a035c2a drivers/serial/samsung.c Ben Dooks 2008-07-03 321 s3c24xx_serial_rx_enable(port);
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 322
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 323 ourport->tx_mode = 0;
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 324 }
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 325
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 326 static void s3c24xx_serial_start_next_tx(struct s3c24xx_uart_port *ourport);
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 327
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 328 static void s3c24xx_serial_tx_dma_complete(void *args)
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 329 {
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 330 struct s3c24xx_uart_port *ourport = args;
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 331 struct uart_port *port = &ourport->port;
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 @332 struct circ_buf *xmit = &port->state->xmit;
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 333 struct s3c24xx_uart_dma *dma = ourport->dma;
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 334 struct dma_tx_state state;
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 335 unsigned long flags;
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 336 int count;
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 337
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 338 dmaengine_tx_status(dma->tx_chan, dma->tx_cookie, &state);
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 339 count = dma->tx_bytes_requested - state.residue;
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 340 async_tx_ack(dma->tx_desc);
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 341
4fc2d3cd6d3a48 drivers/tty/serial/samsung_tty.c Tamseel Shams 2021-06-29 342 dma_sync_single_for_cpu(dma->tx_chan->device->dev,
4fc2d3cd6d3a48 drivers/tty/serial/samsung_tty.c Tamseel Shams 2021-06-29 343 dma->tx_transfer_addr, dma->tx_size,
4fc2d3cd6d3a48 drivers/tty/serial/samsung_tty.c Tamseel Shams 2021-06-29 344 DMA_TO_DEVICE);
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 345
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 346 spin_lock_irqsave(&port->lock, flags);
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 347
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 348 xmit->tail = (xmit->tail + count) & (UART_XMIT_SIZE - 1);
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 349 port->icount.tx += count;
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 350 ourport->tx_in_progress = 0;
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 351
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 @352 if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 353 uart_write_wakeup(port);
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 354
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 355 s3c24xx_serial_start_next_tx(ourport);
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 356 spin_unlock_irqrestore(&port->lock, flags);
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 357 }
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 358
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 359 static void enable_tx_dma(struct s3c24xx_uart_port *ourport)
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 360 {
bb1d98187b09d4 drivers/tty/serial/samsung_tty.c Krzysztof Kozlowski 2022-03-08 361 const struct uart_port *port = &ourport->port;
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 362 u32 ucon;
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 363
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 364 /* Mask Tx interrupt */
aaf144059ba474 drivers/tty/serial/samsung_tty.c Hector Martin 2021-03-05 365 switch (ourport->info->type) {
aaf144059ba474 drivers/tty/serial/samsung_tty.c Hector Martin 2021-03-05 366 case TYPE_S3C6400:
bbb5ff91225dfb drivers/tty/serial/samsung.c Matthew Leach 2016-06-22 367 s3c24xx_set_bit(port, S3C64XX_UINTM_TXD, S3C64XX_UINTM);
aaf144059ba474 drivers/tty/serial/samsung_tty.c Hector Martin 2021-03-05 368 break;
fcbba344907afe drivers/tty/serial/samsung_tty.c Hector Martin 2021-03-05 369 case TYPE_APPLE_S5L:
fcbba344907afe drivers/tty/serial/samsung_tty.c Hector Martin 2021-03-05 370 WARN_ON(1); // No DMA
fcbba344907afe drivers/tty/serial/samsung_tty.c Hector Martin 2021-03-05 371 break;
aaf144059ba474 drivers/tty/serial/samsung_tty.c Hector Martin 2021-03-05 372 default:
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 373 disable_irq_nosync(ourport->tx_irq);
aaf144059ba474 drivers/tty/serial/samsung_tty.c Hector Martin 2021-03-05 374 break;
aaf144059ba474 drivers/tty/serial/samsung_tty.c Hector Martin 2021-03-05 375 }
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 376
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 377 /* Enable tx dma mode */
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 378 ucon = rd_regl(port, S3C2410_UCON);
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 379 ucon &= ~(S3C64XX_UCON_TXBURST_MASK | S3C64XX_UCON_TXMODE_MASK);
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 380 ucon |= (dma_get_cache_alignment() >= 16) ?
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 381 S3C64XX_UCON_TXBURST_16 : S3C64XX_UCON_TXBURST_1;
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 382 ucon |= S3C64XX_UCON_TXMODE_DMA;
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 383 wr_regl(port, S3C2410_UCON, ucon);
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 384
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 385 ourport->tx_mode = S3C24XX_TX_DMA;
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 386 }
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 387
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 388 static void enable_tx_pio(struct s3c24xx_uart_port *ourport)
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 389 {
bb1d98187b09d4 drivers/tty/serial/samsung_tty.c Krzysztof Kozlowski 2022-03-08 390 const struct uart_port *port = &ourport->port;
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 391 u32 ucon, ufcon;
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 392
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 393 /* Set ufcon txtrig */
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 394 ourport->tx_in_progress = S3C24XX_TX_PIO;
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 395 ufcon = rd_regl(port, S3C2410_UFCON);
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 396 wr_regl(port, S3C2410_UFCON, ufcon);
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 397
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 398 /* Enable tx pio mode */
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 399 ucon = rd_regl(port, S3C2410_UCON);
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 400 ucon &= ~(S3C64XX_UCON_TXMODE_MASK);
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 401 ucon |= S3C64XX_UCON_TXMODE_CPU;
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 402 wr_regl(port, S3C2410_UCON, ucon);
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 403
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 404 /* Unmask Tx interrupt */
aaf144059ba474 drivers/tty/serial/samsung_tty.c Hector Martin 2021-03-05 405 switch (ourport->info->type) {
aaf144059ba474 drivers/tty/serial/samsung_tty.c Hector Martin 2021-03-05 406 case TYPE_S3C6400:
bbb5ff91225dfb drivers/tty/serial/samsung.c Matthew Leach 2016-06-22 407 s3c24xx_clear_bit(port, S3C64XX_UINTM_TXD,
bbb5ff91225dfb drivers/tty/serial/samsung.c Matthew Leach 2016-06-22 408 S3C64XX_UINTM);
aaf144059ba474 drivers/tty/serial/samsung_tty.c Hector Martin 2021-03-05 409 break;
fcbba344907afe drivers/tty/serial/samsung_tty.c Hector Martin 2021-03-05 410 case TYPE_APPLE_S5L:
fcbba344907afe drivers/tty/serial/samsung_tty.c Hector Martin 2021-03-05 411 ucon |= APPLE_S5L_UCON_TXTHRESH_ENA_MSK;
fcbba344907afe drivers/tty/serial/samsung_tty.c Hector Martin 2021-03-05 412 wr_regl(port, S3C2410_UCON, ucon);
fcbba344907afe drivers/tty/serial/samsung_tty.c Hector Martin 2021-03-05 413 break;
aaf144059ba474 drivers/tty/serial/samsung_tty.c Hector Martin 2021-03-05 414 default:
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 415 enable_irq(ourport->tx_irq);
aaf144059ba474 drivers/tty/serial/samsung_tty.c Hector Martin 2021-03-05 416 break;
aaf144059ba474 drivers/tty/serial/samsung_tty.c Hector Martin 2021-03-05 417 }
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 418
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 419 ourport->tx_mode = S3C24XX_TX_PIO;
fcbba344907afe drivers/tty/serial/samsung_tty.c Hector Martin 2021-03-05 420
fcbba344907afe drivers/tty/serial/samsung_tty.c Hector Martin 2021-03-05 421 /*
fcbba344907afe drivers/tty/serial/samsung_tty.c Hector Martin 2021-03-05 422 * The Apple version only has edge triggered TX IRQs, so we need
fcbba344907afe drivers/tty/serial/samsung_tty.c Hector Martin 2021-03-05 423 * to kick off the process by sending some characters here.
fcbba344907afe drivers/tty/serial/samsung_tty.c Hector Martin 2021-03-05 424 */
fcbba344907afe drivers/tty/serial/samsung_tty.c Hector Martin 2021-03-05 425 if (ourport->info->type == TYPE_APPLE_S5L)
fcbba344907afe drivers/tty/serial/samsung_tty.c Hector Martin 2021-03-05 426 s3c24xx_serial_tx_chars(ourport);
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 427 }
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 428
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 429 static void s3c24xx_serial_start_tx_pio(struct s3c24xx_uart_port *ourport)
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 430 {
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 431 if (ourport->tx_mode != S3C24XX_TX_PIO)
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 432 enable_tx_pio(ourport);
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 433 }
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 434
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 435 static int s3c24xx_serial_start_tx_dma(struct s3c24xx_uart_port *ourport,
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 436 unsigned int count)
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 437 {
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 438 struct uart_port *port = &ourport->port;
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 439 struct circ_buf *xmit = &port->state->xmit;
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 440 struct s3c24xx_uart_dma *dma = ourport->dma;
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 441
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 442 if (ourport->tx_mode != S3C24XX_TX_DMA)
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 443 enable_tx_dma(ourport);
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 444
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 445 dma->tx_size = count & ~(dma_get_cache_alignment() - 1);
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 @446 dma->tx_transfer_addr = dma->tx_addr + xmit->tail;
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 447
4fc2d3cd6d3a48 drivers/tty/serial/samsung_tty.c Tamseel Shams 2021-06-29 448 dma_sync_single_for_device(dma->tx_chan->device->dev,
4fc2d3cd6d3a48 drivers/tty/serial/samsung_tty.c Tamseel Shams 2021-06-29 449 dma->tx_transfer_addr, dma->tx_size,
4fc2d3cd6d3a48 drivers/tty/serial/samsung_tty.c Tamseel Shams 2021-06-29 450 DMA_TO_DEVICE);
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 451
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 452 dma->tx_desc = dmaengine_prep_slave_single(dma->tx_chan,
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 453 dma->tx_transfer_addr, dma->tx_size,
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 454 DMA_MEM_TO_DEV, DMA_PREP_INTERRUPT);
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 455 if (!dma->tx_desc) {
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 456 dev_err(ourport->port.dev, "Unable to get desc for Tx\n");
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 457 return -EIO;
b497549a035c2a drivers/serial/samsung.c Ben Dooks 2008-07-03 458 }
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 459
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 460 dma->tx_desc->callback = s3c24xx_serial_tx_dma_complete;
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 461 dma->tx_desc->callback_param = ourport;
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 462 dma->tx_bytes_requested = dma->tx_size;
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 463
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 464 ourport->tx_in_progress = S3C24XX_TX_DMA;
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 465 dma->tx_cookie = dmaengine_submit(dma->tx_desc);
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 466 dma_async_issue_pending(dma->tx_chan);
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 467 return 0;
b497549a035c2a drivers/serial/samsung.c Ben Dooks 2008-07-03 468 }
b497549a035c2a drivers/serial/samsung.c Ben Dooks 2008-07-03 469
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 470 static void s3c24xx_serial_start_next_tx(struct s3c24xx_uart_port *ourport)
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 471 {
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 472 struct uart_port *port = &ourport->port;
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 473 struct circ_buf *xmit = &port->state->xmit;
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 474 unsigned long count;
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 475
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 476 /* Get data size up to the end of buffer */
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 @477 count = CIRC_CNT_TO_END(xmit->head, xmit->tail, UART_XMIT_SIZE);
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 478
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 479 if (!count) {
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 480 s3c24xx_serial_stop_tx(port);
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 481 return;
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 482 }
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 483
81ccb2a69f76b8 drivers/tty/serial/samsung.c Marek Szyprowski 2015-07-31 484 if (!ourport->dma || !ourport->dma->tx_chan ||
736cd79f483fd7 drivers/tty/serial/samsung.c Robert Baldyga 2015-07-31 485 count < ourport->min_dma_size ||
736cd79f483fd7 drivers/tty/serial/samsung.c Robert Baldyga 2015-07-31 486 xmit->tail & (dma_get_cache_alignment() - 1))
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 487 s3c24xx_serial_start_tx_pio(ourport);
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 488 else
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 489 s3c24xx_serial_start_tx_dma(ourport, count);
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 490 }
29bef79908459d drivers/tty/serial/samsung.c Robert Baldyga 2014-12-10 491
:::::: The code at line 285 was first introduced by commit
:::::: 29bef79908459d20a7a3db654bceb8f3ce4601dc serial: samsung: add DMA support for TX
:::::: TO: Robert Baldyga <r.baldyga@...sung.com>
:::::: CC: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
--
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