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Subject[PATCH 05/24] Staging: ipack/devices/ipoctal: Directly use ioread/iowrite function.
Date
From: Jens Taprogge <jens.taprogge@taprogge.org>

Signed-off-by: Jens Taprogge <jens.taprogge@taprogge.org>
Signed-off-by: Samuel Iglesias Gonsalvez <siglesias@igalia.com>
---
drivers/staging/ipack/devices/ipoctal.c | 151 +++++++++----------------------
1 file changed, 41 insertions(+), 110 deletions(-)

diff --git a/drivers/staging/ipack/devices/ipoctal.c b/drivers/staging/ipack/devices/ipoctal.c
index 9ab0e80..c963456 100644
--- a/drivers/staging/ipack/devices/ipoctal.c
+++ b/drivers/staging/ipack/devices/ipoctal.c
@@ -56,26 +56,6 @@ struct ipoctal {
/* Linked list to save the registered devices */
static LIST_HEAD(ipoctal_list);

-static inline void ipoctal_write_io_reg(struct ipoctal *ipoctal,
- u8 __iomem *dest,
- u8 value)
-{
- iowrite8(value, dest);
-}
-
-static inline void ipoctal_write_cr_cmd(struct ipoctal *ipoctal,
- u8 __iomem *dest,
- u8 value)
-{
- ipoctal_write_io_reg(ipoctal, dest, value);
-}
-
-static inline unsigned char ipoctal_read_io_reg(struct ipoctal *ipoctal,
- u8 __iomem *src)
-{
- return ioread8(src);
-}
-
static struct ipoctal *ipoctal_find_board(struct tty_struct *tty)
{
struct ipoctal *p;
@@ -102,8 +82,7 @@ static int ipoctal_port_activate(struct tty_port *port, struct tty_struct *tty)
}
channel = &ipoctal->channel[tty->index];

- ipoctal_write_io_reg(ipoctal, &channel->regs->w.cr,
- CR_ENABLE_RX);
+ iowrite8(CR_ENABLE_RX, &channel->regs->w.cr);
return 0;
}

@@ -216,10 +195,8 @@ static int ipoctal_irq_handler(void *arg)
* The HW is organized in pair of channels.
* See which register we need to read from
*/
- isr = ipoctal_read_io_reg(ipoctal,
- &channel->block_regs->r.isr);
- sr = ipoctal_read_io_reg(ipoctal,
- &channel->regs->r.sr);
+ isr = ioread8(&channel->block_regs->r.isr);
+ sr = ioread8(&channel->regs->r.sr);

if ((ichannel % 2) == 1) {
isr_tx_rdy = isr & ISR_TxRDY_B;
@@ -235,30 +212,21 @@ static int ipoctal_irq_handler(void *arg)
if ((ipoctal->board_id == IPACK1_DEVICE_ID_SBS_OCTAL_485) &&
(sr & SR_TX_EMPTY) &&
(channel->nb_bytes == 0)) {
- ipoctal_write_io_reg(ipoctal,
- &channel->regs->w.cr,
- CR_DISABLE_TX);
- ipoctal_write_cr_cmd(ipoctal,
- &channel->regs->w.cr,
- CR_CMD_NEGATE_RTSN);
- ipoctal_write_io_reg(ipoctal,
- &channel->regs->w.cr,
- CR_ENABLE_RX);
+ iowrite8(CR_DISABLE_TX, &channel->regs->w.cr);
+ iowrite8(CR_CMD_NEGATE_RTSN, &channel->regs->w.cr);
+ iowrite8(CR_ENABLE_RX, &channel->regs->w.cr);
ipoctal->write = 1;
wake_up_interruptible(&channel->queue);
}

/* RX data */
if (isr_rx_rdy && (sr & SR_RX_READY)) {
- value = ipoctal_read_io_reg(ipoctal,
- &channel->regs->r.rhr);
+ value = ioread8(&channel->regs->r.rhr);
flag = TTY_NORMAL;

/* Error: count statistics */
if (sr & SR_ERROR) {
- ipoctal_write_cr_cmd(ipoctal,
- &channel->regs->w.cr,
- CR_CMD_RESET_ERR_STATUS);
+ iowrite8(CR_CMD_RESET_ERR_STATUS, &channel->regs->w.cr);

if (sr & SR_OVERRUN_ERROR) {
channel->stats.overrun_err++;
@@ -292,9 +260,7 @@ static int ipoctal_irq_handler(void *arg)
}

value = channel->tty_port.xmit_buf[*pointer_write];
- ipoctal_write_io_reg(ipoctal,
- &channel->regs->w.thr,
- value);
+ iowrite8(value, &channel->regs->w.thr);
channel->stats.tx++;
channel->count_wr++;
(*pointer_write)++;
@@ -405,37 +371,22 @@ static int ipoctal_inst_slot(struct ipoctal *ipoctal, unsigned int bus_nr,
channel->regs = chan_regs + i;
channel->block_regs = block_regs + (i >> 1);

- ipoctal_write_io_reg(ipoctal, &channel->regs->w.cr,
- CR_DISABLE_RX | CR_DISABLE_TX);
- ipoctal_write_cr_cmd(ipoctal, &channel->regs->w.cr,
- CR_CMD_RESET_RX);
- ipoctal_write_cr_cmd(ipoctal, &channel->regs->w.cr,
- CR_CMD_RESET_TX);
- ipoctal_write_io_reg(ipoctal,
- &channel->regs->w.mr,
- MR1_CHRL_8_BITS | MR1_ERROR_CHAR |
- MR1_RxINT_RxRDY); /* mr1 */
- ipoctal_write_io_reg(ipoctal,
- &channel->regs->w.mr,
- 0); /* mr2 */
- ipoctal_write_io_reg(ipoctal,
- &channel->regs->w.csr,
- TX_CLK_9600 | RX_CLK_9600);
+ iowrite8(CR_DISABLE_RX | CR_DISABLE_TX, &channel->regs->w.cr);
+ iowrite8(CR_CMD_RESET_RX, &channel->regs->w.cr);
+ iowrite8(CR_CMD_RESET_TX, &channel->regs->w.cr);
+ iowrite8(MR1_CHRL_8_BITS | MR1_ERROR_CHAR | MR1_RxINT_RxRDY,
+ &channel->regs->w.mr); /* mr1 */
+ iowrite8(0, &channel->regs->w.mr); /* mr2 */
+ iowrite8(TX_CLK_9600 | RX_CLK_9600, &channel->regs->w.csr);
}

for (i = 0; i < IP_OCTAL_NB_BLOCKS; i++) {
- ipoctal_write_io_reg(ipoctal,
- &block_regs[i].w.acr,
- ACR_BRG_SET2);
- ipoctal_write_io_reg(ipoctal,
- &block_regs[i].w.opcr,
- OPCR_MPP_OUTPUT | OPCR_MPOa_RTSN |
- OPCR_MPOb_RTSN);
- ipoctal_write_io_reg(ipoctal,
- &block_regs[i].w.imr,
- IMR_TxRDY_A | IMR_RxRDY_FFULL_A |
- IMR_DELTA_BREAK_A | IMR_TxRDY_B |
- IMR_RxRDY_FFULL_B | IMR_DELTA_BREAK_B);
+ iowrite8(ACR_BRG_SET2, &block_regs[i].w.acr);
+ iowrite8(OPCR_MPP_OUTPUT | OPCR_MPOa_RTSN | OPCR_MPOb_RTSN,
+ &block_regs[i].w.opcr);
+ iowrite8(IMR_TxRDY_A | IMR_RxRDY_FFULL_A | IMR_DELTA_BREAK_A |
+ IMR_TxRDY_B | IMR_RxRDY_FFULL_B | IMR_DELTA_BREAK_B,
+ &block_regs[i].w.imr);
}

/*
@@ -504,8 +455,7 @@ static int ipoctal_inst_slot(struct ipoctal *ipoctal, unsigned int bus_nr,
* Enable again the RX. TX will be enabled when
* there is something to send
*/
- ipoctal_write_io_reg(ipoctal, &channel->regs->w.cr,
- CR_ENABLE_RX);
+ iowrite8(CR_ENABLE_RX, &channel->regs->w.cr);
}

return 0;
@@ -553,25 +503,17 @@ static int ipoctal_write(struct ipoctal *ipoctal, unsigned int ichannel,

/* As the IP-OCTAL 485 only supports half duplex, do it manually */
if (ipoctal->board_id == IPACK1_DEVICE_ID_SBS_OCTAL_485) {
- ipoctal_write_io_reg(ipoctal,
- &channel->regs->w.cr,
- CR_DISABLE_RX);
- ipoctal_write_cr_cmd(ipoctal,
- &channel->regs->w.cr,
- CR_CMD_ASSERT_RTSN);
+ iowrite8(CR_DISABLE_RX, &channel->regs->w.cr);
+ iowrite8(CR_CMD_ASSERT_RTSN, &channel->regs->w.cr);
}

/*
* Send a packet and then disable TX to avoid failure after several send
* operations
*/
- ipoctal_write_io_reg(ipoctal,
- &channel->regs->w.cr,
- CR_ENABLE_TX);
+ iowrite8(CR_ENABLE_TX, &channel->regs->w.cr);
wait_event_interruptible(channel->queue, ipoctal->write);
- ipoctal_write_io_reg(ipoctal,
- &channel->regs->w.cr,
- CR_DISABLE_TX);
+ iowrite8(CR_DISABLE_TX, &channel->regs->w.cr);

ipoctal->write = 0;
return channel->count_wr;
@@ -615,16 +557,11 @@ static void ipoctal_set_termios(struct tty_struct *tty,
cflag = tty->termios->c_cflag;

/* Disable and reset everything before change the setup */
- ipoctal_write_io_reg(ipoctal, &channel->regs->w.cr,
- CR_DISABLE_RX | CR_DISABLE_TX);
- ipoctal_write_cr_cmd(ipoctal, &channel->regs->w.cr,
- CR_CMD_RESET_RX);
- ipoctal_write_cr_cmd(ipoctal, &channel->regs->w.cr,
- CR_CMD_RESET_TX);
- ipoctal_write_cr_cmd(ipoctal, &channel->regs->w.cr,
- CR_CMD_RESET_ERR_STATUS);
- ipoctal_write_cr_cmd(ipoctal, &channel->regs->w.cr,
- CR_CMD_RESET_MR);
+ iowrite8(CR_DISABLE_RX | CR_DISABLE_TX, &channel->regs->w.cr);
+ iowrite8(CR_CMD_RESET_RX, &channel->regs->w.cr);
+ iowrite8(CR_CMD_RESET_TX, &channel->regs->w.cr);
+ iowrite8(CR_CMD_RESET_ERR_STATUS, &channel->regs->w.cr);
+ iowrite8(CR_CMD_RESET_MR, &channel->regs->w.cr);

/* Set Bits per chars */
switch (cflag & CSIZE) {
@@ -737,13 +674,12 @@ static void ipoctal_set_termios(struct tty_struct *tty,
mr1 |= MR1_RxINT_RxRDY;

/* Write the control registers */
- ipoctal_write_io_reg(ipoctal, &channel->regs->w.mr, mr1);
- ipoctal_write_io_reg(ipoctal, &channel->regs->w.mr, mr2);
- ipoctal_write_io_reg(ipoctal, &channel->regs->w.csr, csr);
+ iowrite8(mr1, &channel->regs->w.mr);
+ iowrite8(mr2, &channel->regs->w.mr);
+ iowrite8(csr, &channel->regs->w.csr);

/* Enable again the RX */
- ipoctal_write_io_reg(ipoctal, &channel->regs->w.cr,
- CR_ENABLE_RX);
+ iowrite8(CR_ENABLE_RX, &channel->regs->w.cr);
}

static void ipoctal_hangup(struct tty_struct *tty)
@@ -763,16 +699,11 @@ static void ipoctal_hangup(struct tty_struct *tty)

tty_port_hangup(&channel->tty_port);

- ipoctal_write_io_reg(ipoctal, &channel->regs->w.cr,
- CR_DISABLE_RX | CR_DISABLE_TX);
- ipoctal_write_cr_cmd(ipoctal, &channel->regs->w.cr,
- CR_CMD_RESET_RX);
- ipoctal_write_cr_cmd(ipoctal, &channel->regs->w.cr,
- CR_CMD_RESET_TX);
- ipoctal_write_cr_cmd(ipoctal, &channel->regs->w.cr,
- CR_CMD_RESET_ERR_STATUS);
- ipoctal_write_cr_cmd(ipoctal, &channel->regs->w.cr,
- CR_CMD_RESET_MR);
+ iowrite8(CR_DISABLE_RX | CR_DISABLE_TX, &channel->regs->w.cr);
+ iowrite8(CR_CMD_RESET_RX, &channel->regs->w.cr);
+ iowrite8(CR_CMD_RESET_TX, &channel->regs->w.cr);
+ iowrite8(CR_CMD_RESET_ERR_STATUS, &channel->regs->w.cr);
+ iowrite8(CR_CMD_RESET_MR, &channel->regs->w.cr);

clear_bit(ASYNCB_INITIALIZED, &channel->tty_port.flags);
wake_up_interruptible(&channel->tty_port.open_wait);
--
1.7.10.4


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