diff options
| -rw-r--r-- | drivers/staging/ipack/devices/ipoctal.c | 82 | ||||
| -rw-r--r-- | drivers/staging/ipack/devices/scc2698.h | 116 |
2 files changed, 97 insertions, 101 deletions
diff --git a/drivers/staging/ipack/devices/ipoctal.c b/drivers/staging/ipack/devices/ipoctal.c index 76f84278ab21..c1d0c0058347 100644 --- a/drivers/staging/ipack/devices/ipoctal.c +++ b/drivers/staging/ipack/devices/ipoctal.c @@ -40,8 +40,8 @@ struct ipoctal { struct list_head list; struct ipack_device *dev; unsigned int board_id; - struct scc2698_channel __iomem *chan_regs; - struct scc2698_block __iomem *block_regs; + union scc2698_channel __iomem *chan_regs; + union scc2698_block __iomem *block_regs; struct ipoctal_stats chan_stats[NR_CHANNELS]; unsigned int nb_bytes[NR_CHANNELS]; unsigned int count_wr[NR_CHANNELS]; @@ -103,7 +103,7 @@ static int ipoctal_port_activate(struct tty_port *port, struct tty_struct *tty) return -ENODEV; } - ipoctal_write_io_reg(ipoctal, &ipoctal->chan_regs[channel].u.w.cr, + ipoctal_write_io_reg(ipoctal, &ipoctal->chan_regs[channel].w.cr, CR_ENABLE_RX); return 0; } @@ -216,9 +216,9 @@ static int ipoctal_irq_handler(void *arg) */ block = channel / 2; isr = ipoctal_read_io_reg(ipoctal, - &ipoctal->block_regs[block].u.r.isr); + &ipoctal->block_regs[block].r.isr); sr = ipoctal_read_io_reg(ipoctal, - &ipoctal->chan_regs[channel].u.r.sr); + &ipoctal->chan_regs[channel].r.sr); if ((channel % 2) == 1) { isr_tx_rdy = isr & ISR_TxRDY_B; @@ -235,13 +235,13 @@ static int ipoctal_irq_handler(void *arg) (sr & SR_TX_EMPTY) && (ipoctal->nb_bytes[channel] == 0)) { ipoctal_write_io_reg(ipoctal, - &ipoctal->chan_regs[channel].u.w.cr, + &ipoctal->chan_regs[channel].w.cr, CR_DISABLE_TX); ipoctal_write_cr_cmd(ipoctal, - &ipoctal->chan_regs[channel].u.w.cr, + &ipoctal->chan_regs[channel].w.cr, CR_CMD_NEGATE_RTSN); ipoctal_write_io_reg(ipoctal, - &ipoctal->chan_regs[channel].u.w.cr, + &ipoctal->chan_regs[channel].w.cr, CR_ENABLE_RX); ipoctal->write = 1; wake_up_interruptible(&ipoctal->queue[channel]); @@ -250,13 +250,13 @@ static int ipoctal_irq_handler(void *arg) /* RX data */ if (isr_rx_rdy && (sr & SR_RX_READY)) { value = ipoctal_read_io_reg(ipoctal, - &ipoctal->chan_regs[channel].u.r.rhr); + &ipoctal->chan_regs[channel].r.rhr); flag = TTY_NORMAL; /* Error: count statistics */ if (sr & SR_ERROR) { ipoctal_write_cr_cmd(ipoctal, - &ipoctal->chan_regs[channel].u.w.cr, + &ipoctal->chan_regs[channel].w.cr, CR_CMD_RESET_ERR_STATUS); if (sr & SR_OVERRUN_ERROR) { @@ -293,7 +293,7 @@ static int ipoctal_irq_handler(void *arg) value = ipoctal->tty_port[channel].xmit_buf[*pointer_write]; ipoctal_write_io_reg(ipoctal, - &ipoctal->chan_regs[channel].u.w.thr, + &ipoctal->chan_regs[channel].w.thr, value); ipoctal->chan_stats[channel].tx++; ipoctal->count_wr[channel]++; @@ -391,40 +391,40 @@ static int ipoctal_inst_slot(struct ipoctal *ipoctal, unsigned int bus_nr, /* Save the virtual address to access the registers easily */ ipoctal->chan_regs = - (struct scc2698_channel __iomem *) ipoctal->dev->io_space.address; + (union scc2698_channel __iomem *) ipoctal->dev->io_space.address; ipoctal->block_regs = - (struct scc2698_block __iomem *) ipoctal->dev->io_space.address; + (union scc2698_block __iomem *) ipoctal->dev->io_space.address; /* Disable RX and TX before touching anything */ for (i = 0; i < NR_CHANNELS ; i++) { - ipoctal_write_io_reg(ipoctal, &ipoctal->chan_regs[i].u.w.cr, + ipoctal_write_io_reg(ipoctal, &ipoctal->chan_regs[i].w.cr, CR_DISABLE_RX | CR_DISABLE_TX); - ipoctal_write_cr_cmd(ipoctal, &ipoctal->chan_regs[i].u.w.cr, + ipoctal_write_cr_cmd(ipoctal, &ipoctal->chan_regs[i].w.cr, CR_CMD_RESET_RX); - ipoctal_write_cr_cmd(ipoctal, &ipoctal->chan_regs[i].u.w.cr, + ipoctal_write_cr_cmd(ipoctal, &ipoctal->chan_regs[i].w.cr, CR_CMD_RESET_TX); ipoctal_write_io_reg(ipoctal, - &ipoctal->chan_regs[i].u.w.mr, + &ipoctal->chan_regs[i].w.mr, MR1_CHRL_8_BITS | MR1_ERROR_CHAR | MR1_RxINT_RxRDY); /* mr1 */ ipoctal_write_io_reg(ipoctal, - &ipoctal->chan_regs[i].u.w.mr, + &ipoctal->chan_regs[i].w.mr, 0); /* mr2 */ ipoctal_write_io_reg(ipoctal, - &ipoctal->chan_regs[i].u.w.csr, + &ipoctal->chan_regs[i].w.csr, TX_CLK_9600 | RX_CLK_9600); } for (i = 0; i < IP_OCTAL_NB_BLOCKS; i++) { ipoctal_write_io_reg(ipoctal, - &ipoctal->block_regs[i].u.w.acr, + &ipoctal->block_regs[i].w.acr, ACR_BRG_SET2); ipoctal_write_io_reg(ipoctal, - &ipoctal->block_regs[i].u.w.opcr, + &ipoctal->block_regs[i].w.opcr, OPCR_MPP_OUTPUT | OPCR_MPOa_RTSN | OPCR_MPOb_RTSN); ipoctal_write_io_reg(ipoctal, - &ipoctal->block_regs[i].u.w.imr, + &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); @@ -495,7 +495,7 @@ 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, &ipoctal->chan_regs[i].u.w.cr, + ipoctal_write_io_reg(ipoctal, &ipoctal->chan_regs[i].w.cr, CR_ENABLE_RX); } @@ -545,10 +545,10 @@ static int ipoctal_write(struct ipoctal *ipoctal, unsigned int channel, /* As the IP-OCTAL 485 only supports half duplex, do it manually */ if (ipoctal->board_id == IP_OCTAL_485_ID) { ipoctal_write_io_reg(ipoctal, - &ipoctal->chan_regs[channel].u.w.cr, + &ipoctal->chan_regs[channel].w.cr, CR_DISABLE_RX); ipoctal_write_cr_cmd(ipoctal, - &ipoctal->chan_regs[channel].u.w.cr, + &ipoctal->chan_regs[channel].w.cr, CR_CMD_ASSERT_RTSN); } @@ -557,11 +557,11 @@ static int ipoctal_write(struct ipoctal *ipoctal, unsigned int channel, * operations */ ipoctal_write_io_reg(ipoctal, - &ipoctal->chan_regs[channel].u.w.cr, + &ipoctal->chan_regs[channel].w.cr, CR_ENABLE_TX); wait_event_interruptible(ipoctal->queue[channel], ipoctal->write); ipoctal_write_io_reg(ipoctal, - &ipoctal->chan_regs[channel].u.w.cr, + &ipoctal->chan_regs[channel].w.cr, CR_DISABLE_TX); ipoctal->write = 0; @@ -607,15 +607,15 @@ 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, &ipoctal->chan_regs[channel].u.w.cr, + ipoctal_write_io_reg(ipoctal, &ipoctal->chan_regs[channel].w.cr, CR_DISABLE_RX | CR_DISABLE_TX); - ipoctal_write_cr_cmd(ipoctal, &ipoctal->chan_regs[channel].u.w.cr, + ipoctal_write_cr_cmd(ipoctal, &ipoctal->chan_regs[channel].w.cr, CR_CMD_RESET_RX); - ipoctal_write_cr_cmd(ipoctal, &ipoctal->chan_regs[channel].u.w.cr, + ipoctal_write_cr_cmd(ipoctal, &ipoctal->chan_regs[channel].w.cr, CR_CMD_RESET_TX); - ipoctal_write_cr_cmd(ipoctal, &ipoctal->chan_regs[channel].u.w.cr, + ipoctal_write_cr_cmd(ipoctal, &ipoctal->chan_regs[channel].w.cr, CR_CMD_RESET_ERR_STATUS); - ipoctal_write_cr_cmd(ipoctal, &ipoctal->chan_regs[channel].u.w.cr, + ipoctal_write_cr_cmd(ipoctal, &ipoctal->chan_regs[channel].w.cr, CR_CMD_RESET_MR); /* Set Bits per chars */ @@ -729,12 +729,12 @@ static void ipoctal_set_termios(struct tty_struct *tty, mr1 |= MR1_RxINT_RxRDY; /* Write the control registers */ - ipoctal_write_io_reg(ipoctal, &ipoctal->chan_regs[channel].u.w.mr, mr1); - ipoctal_write_io_reg(ipoctal, &ipoctal->chan_regs[channel].u.w.mr, mr2); - ipoctal_write_io_reg(ipoctal, &ipoctal->chan_regs[channel].u.w.csr, csr); + ipoctal_write_io_reg(ipoctal, &ipoctal->chan_regs[channel].w.mr, mr1); + ipoctal_write_io_reg(ipoctal, &ipoctal->chan_regs[channel].w.mr, mr2); + ipoctal_write_io_reg(ipoctal, &ipoctal->chan_regs[channel].w.csr, csr); /* Enable again the RX */ - ipoctal_write_io_reg(ipoctal, &ipoctal->chan_regs[channel].u.w.cr, + ipoctal_write_io_reg(ipoctal, &ipoctal->chan_regs[channel].w.cr, CR_ENABLE_RX); } @@ -755,15 +755,15 @@ static void ipoctal_hangup(struct tty_struct *tty) tty_port_hangup(&ipoctal->tty_port[channel]); - ipoctal_write_io_reg(ipoctal, &ipoctal->chan_regs[channel].u.w.cr, + ipoctal_write_io_reg(ipoctal, &ipoctal->chan_regs[channel].w.cr, CR_DISABLE_RX | CR_DISABLE_TX); - ipoctal_write_cr_cmd(ipoctal, &ipoctal->chan_regs[channel].u.w.cr, + ipoctal_write_cr_cmd(ipoctal, &ipoctal->chan_regs[channel].w.cr, CR_CMD_RESET_RX); - ipoctal_write_cr_cmd(ipoctal, &ipoctal->chan_regs[channel].u.w.cr, + ipoctal_write_cr_cmd(ipoctal, &ipoctal->chan_regs[channel].w.cr, CR_CMD_RESET_TX); - ipoctal_write_cr_cmd(ipoctal, &ipoctal->chan_regs[channel].u.w.cr, + ipoctal_write_cr_cmd(ipoctal, &ipoctal->chan_regs[channel].w.cr, CR_CMD_RESET_ERR_STATUS); - ipoctal_write_cr_cmd(ipoctal, &ipoctal->chan_regs[channel].u.w.cr, + ipoctal_write_cr_cmd(ipoctal, &ipoctal->chan_regs[channel].w.cr, CR_CMD_RESET_MR); clear_bit(ASYNCB_INITIALIZED, &ipoctal->tty_port[channel].flags); diff --git a/drivers/staging/ipack/devices/scc2698.h b/drivers/staging/ipack/devices/scc2698.h index fcab4275a6a7..223838a43843 100644 --- a/drivers/staging/ipack/devices/scc2698.h +++ b/drivers/staging/ipack/devices/scc2698.h @@ -15,78 +15,74 @@ #define SCC2698_H_ /* - * struct scc2698_channel - Channel access to scc2698 IO + * union scc2698_channel - Channel access to scc2698 IO * * dn value are only spacer. * */ -struct scc2698_channel { - union { - struct { - u8 d0, mr; /* Mode register 1/2*/ - u8 d1, sr; /* Status register */ - u8 d2, r1; /* reserved */ - u8 d3, rhr; /* Receive holding register (R) */ - u8 junk[8]; /* other crap for block control */ - } __packed r; /* Read access */ - struct { - u8 d0, mr; /* Mode register 1/2 */ - u8 d1, csr; /* Clock select register */ - u8 d2, cr; /* Command register */ - u8 d3, thr; /* Transmit holding register */ - u8 junk[8]; /* other crap for block control */ - } __packed w; /* Write access */ - } u; -} __packed; +union scc2698_channel { + struct { + u8 d0, mr; /* Mode register 1/2*/ + u8 d1, sr; /* Status register */ + u8 d2, r1; /* reserved */ + u8 d3, rhr; /* Receive holding register (R) */ + u8 junk[8]; /* other crap for block control */ + } __packed r; /* Read access */ + struct { + u8 d0, mr; /* Mode register 1/2 */ + u8 d1, csr; /* Clock select register */ + u8 d2, cr; /* Command register */ + u8 d3, thr; /* Transmit holding register */ + u8 junk[8]; /* other crap for block control */ + } __packed w; /* Write access */ +}; /* - * struct scc2698_block - Block access to scc2698 IO + * union scc2698_block - Block access to scc2698 IO * * The scc2698 contain 4 block. * Each block containt two channel a and b. * dn value are only spacer. * */ -struct scc2698_block { - union { - struct { - u8 d0, mra; /* Mode register 1/2 (a) */ - u8 d1, sra; /* Status register (a) */ - u8 d2, r1; /* reserved */ - u8 d3, rhra; /* Receive holding register (a) */ - u8 d4, ipcr; /* Input port change register of block */ - u8 d5, isr; /* Interrupt status register of block */ - u8 d6, ctur; /* Counter timer upper register of block */ - u8 d7, ctlr; /* Counter timer lower register of block */ - u8 d8, mrb; /* Mode register 1/2 (b) */ - u8 d9, srb; /* Status register (b) */ - u8 da, r2; /* reserved */ - u8 db, rhrb; /* Receive holding register (b) */ - u8 dc, r3; /* reserved */ - u8 dd, ip; /* Input port register of block */ - u8 de, ctg; /* Start counter timer of block */ - u8 df, cts; /* Stop counter timer of block */ - } __packed r; /* Read access */ - struct { - u8 d0, mra; /* Mode register 1/2 (a) */ - u8 d1, csra; /* Clock select register (a) */ - u8 d2, cra; /* Command register (a) */ - u8 d3, thra; /* Transmit holding register (a) */ - u8 d4, acr; /* Auxiliary control register of block */ - u8 d5, imr; /* Interrupt mask register of block */ - u8 d6, ctu; /* Counter timer upper register of block */ - u8 d7, ctl; /* Counter timer lower register of block */ - u8 d8, mrb; /* Mode register 1/2 (b) */ - u8 d9, csrb; /* Clock select register (a) */ - u8 da, crb; /* Command register (b) */ - u8 db, thrb; /* Transmit holding register (b) */ - u8 dc, r1; /* reserved */ - u8 dd, opcr; /* Output port configuration register of block */ - u8 de, r2; /* reserved */ - u8 df, r3; /* reserved */ - } __packed w; /* Write access */ - } u; -} __packed; +union scc2698_block { + struct { + u8 d0, mra; /* Mode register 1/2 (a) */ + u8 d1, sra; /* Status register (a) */ + u8 d2, r1; /* reserved */ + u8 d3, rhra; /* Receive holding register (a) */ + u8 d4, ipcr; /* Input port change register of block */ + u8 d5, isr; /* Interrupt status register of block */ + u8 d6, ctur; /* Counter timer upper register of block */ + u8 d7, ctlr; /* Counter timer lower register of block */ + u8 d8, mrb; /* Mode register 1/2 (b) */ + u8 d9, srb; /* Status register (b) */ + u8 da, r2; /* reserved */ + u8 db, rhrb; /* Receive holding register (b) */ + u8 dc, r3; /* reserved */ + u8 dd, ip; /* Input port register of block */ + u8 de, ctg; /* Start counter timer of block */ + u8 df, cts; /* Stop counter timer of block */ + } __packed r; /* Read access */ + struct { + u8 d0, mra; /* Mode register 1/2 (a) */ + u8 d1, csra; /* Clock select register (a) */ + u8 d2, cra; /* Command register (a) */ + u8 d3, thra; /* Transmit holding register (a) */ + u8 d4, acr; /* Auxiliary control register of block */ + u8 d5, imr; /* Interrupt mask register of block */ + u8 d6, ctu; /* Counter timer upper register of block */ + u8 d7, ctl; /* Counter timer lower register of block */ + u8 d8, mrb; /* Mode register 1/2 (b) */ + u8 d9, csrb; /* Clock select register (a) */ + u8 da, crb; /* Command register (b) */ + u8 db, thrb; /* Transmit holding register (b) */ + u8 dc, r1; /* reserved */ + u8 dd, opcr; /* Output port configuration register of block */ + u8 de, r2; /* reserved */ + u8 df, r3; /* reserved */ + } __packed w; /* Write access */ +}; #define MR1_CHRL_5_BITS (0x0 << 0) #define MR1_CHRL_6_BITS (0x1 << 0) |