int (*init)(struct pci_dev *dev);
int (*setup)(struct serial_private *,
const struct pciserial_board *,
- struct uart_port *, int);
+ struct uart_8250_port *, int);
void (*exit)(struct pci_dev *dev);
};
};
static int pci_default_setup(struct serial_private*,
- const struct pciserial_board*, struct uart_port*, int);
+ const struct pciserial_board*, struct uart_8250_port *, int);
static void moan_device(const char *str, struct pci_dev *dev)
{
}
static int
- setup_port(struct serial_private *priv, struct uart_port *port,
+ setup_port(struct serial_private *priv, struct uart_8250_port *port,
int bar, int offset, int regshift)
{
struct pci_dev *dev = priv->dev;
if (!priv->remapped_bar[bar])
return -ENOMEM;
- port->iotype = UPIO_MEM;
- port->iobase = 0;
- port->mapbase = base + offset;
- port->membase = priv->remapped_bar[bar] + offset;
- port->regshift = regshift;
+ port->port.iotype = UPIO_MEM;
+ port->port.iobase = 0;
+ port->port.mapbase = base + offset;
+ port->port.membase = priv->remapped_bar[bar] + offset;
+ port->port.regshift = regshift;
} else {
- port->iotype = UPIO_PORT;
- port->iobase = base + offset;
- port->mapbase = 0;
- port->membase = NULL;
- port->regshift = 0;
+ port->port.iotype = UPIO_PORT;
+ port->port.iobase = base + offset;
+ port->port.mapbase = 0;
+ port->port.membase = NULL;
+ port->port.regshift = 0;
}
return 0;
}
*/
static int addidata_apci7800_setup(struct serial_private *priv,
const struct pciserial_board *board,
- struct uart_port *port, int idx)
+ struct uart_8250_port *port, int idx)
{
unsigned int bar = 0, offset = board->first_offset;
bar = FL_GET_BASE(board->flags);
*/
static int
afavlab_setup(struct serial_private *priv, const struct pciserial_board *board,
- struct uart_port *port, int idx)
+ struct uart_8250_port *port, int idx)
{
unsigned int bar, offset = board->first_offset;
static int
pci_hp_diva_setup(struct serial_private *priv,
const struct pciserial_board *board,
- struct uart_port *port, int idx)
+ struct uart_8250_port *port, int idx)
{
unsigned int offset = board->first_offset;
unsigned int bar = FL_GET_BASE(board->flags);
/* SBS Technologies Inc. PMC-OCTPRO and P-OCTAL cards */
static int
sbs_setup(struct serial_private *priv, const struct pciserial_board *board,
- struct uart_port *port, int idx)
+ struct uart_8250_port *port, int idx)
{
unsigned int bar, offset = board->first_offset;
static int pci_siig_setup(struct serial_private *priv,
const struct pciserial_board *board,
- struct uart_port *port, int idx)
+ struct uart_8250_port *port, int idx)
{
unsigned int bar = FL_GET_BASE(board->flags) + idx, offset = 0;
static int
pci_timedia_setup(struct serial_private *priv,
const struct pciserial_board *board,
- struct uart_port *port, int idx)
+ struct uart_8250_port *port, int idx)
{
unsigned int bar = 0, offset = board->first_offset;
static int
titan_400l_800l_setup(struct serial_private *priv,
const struct pciserial_board *board,
- struct uart_port *port, int idx)
+ struct uart_8250_port *port, int idx)
{
unsigned int bar, offset = board->first_offset;
static int
pci_ni8430_setup(struct serial_private *priv,
const struct pciserial_board *board,
- struct uart_port *port, int idx)
+ struct uart_8250_port *port, int idx)
{
void __iomem *p;
unsigned long base, len;
static int pci_netmos_9900_setup(struct serial_private *priv,
const struct pciserial_board *board,
- struct uart_port *port, int idx)
+ struct uart_8250_port *port, int idx)
{
unsigned int bar;
return number_uarts;
}
- static int
- pci_default_setup(struct serial_private *priv,
+ static int pci_asix_setup(struct serial_private *priv,
const struct pciserial_board *board,
- struct uart_port *port, int idx)
+ struct uart_8250_port *port, int idx)
+ {
+ port->bugs |= UART_BUG_PARITY;
+ return pci_default_setup(priv, board, port, idx);
+ }
+
+ static int pci_default_setup(struct serial_private *priv,
+ const struct pciserial_board *board,
+ struct uart_8250_port *port, int idx)
{
unsigned int bar, offset = board->first_offset, maxnr;
static int
ce4100_serial_setup(struct serial_private *priv,
const struct pciserial_board *board,
- struct uart_port *port, int idx)
+ struct uart_8250_port *port, int idx)
{
int ret;
ret = setup_port(priv, port, 0, 0, board->reg_shift);
- port->iotype = UPIO_MEM32;
- port->type = PORT_XSCALE;
- port->flags = (port->flags | UPF_FIXED_PORT | UPF_FIXED_TYPE);
- port->regshift = 2;
+ port->port.iotype = UPIO_MEM32;
+ port->port.type = PORT_XSCALE;
+ port->port.flags = (port->port.flags | UPF_FIXED_PORT | UPF_FIXED_TYPE);
+ port->port.regshift = 2;
return ret;
}
static int
pci_omegapci_setup(struct serial_private *priv,
const struct pciserial_board *board,
- struct uart_port *port, int idx)
+ struct uart_8250_port *port, int idx)
{
return setup_port(priv, port, 2, idx * 8, 0);
}
static int skip_tx_en_setup(struct serial_private *priv,
const struct pciserial_board *board,
- struct uart_port *port, int idx)
+ struct uart_8250_port *port, int idx)
{
- port->flags |= UPF_NO_TXEN_TEST;
+ port->port.flags |= UPF_NO_TXEN_TEST;
printk(KERN_DEBUG "serial8250: skipping TxEn test for device "
"[%04x:%04x] subsystem [%04x:%04x]\n",
priv->dev->vendor,
static int kt_serial_setup(struct serial_private *priv,
const struct pciserial_board *board,
- struct uart_port *port, int idx)
+ struct uart_8250_port *port, int idx)
{
- port->flags |= UPF_BUG_THRE;
- port->serial_in = kt_serial_in;
- port->handle_break = kt_handle_break;
+ port->port.flags |= UPF_BUG_THRE;
+ port->port.serial_in = kt_serial_in;
+ port->port.handle_break = kt_handle_break;
return skip_tx_en_setup(priv, board, port, idx);
}
static int
pci_xr17c154_setup(struct serial_private *priv,
const struct pciserial_board *board,
- struct uart_port *port, int idx)
+ struct uart_8250_port *port, int idx)
+ {
+ port->port.flags |= UPF_EXAR_EFR;
+ return pci_default_setup(priv, board, port, idx);
+ }
+
+ static int
+ pci_wch_ch353_setup(struct serial_private *priv,
+ const struct pciserial_board *board,
+ struct uart_8250_port *port, int idx)
{
- port->flags |= UPF_EXAR_EFR;
+ port->port.flags |= UPF_FIXED_TYPE;
+ port->port.type = PORT_16550A;
return pci_default_setup(priv, board, port, idx);
}
#define PCIE_DEVICE_ID_NEO_2_OX_IBM 0x00F6
#define PCI_DEVICE_ID_PLX_CRONYX_OMEGA 0xc001
#define PCI_DEVICE_ID_INTEL_PATSBURG_KT 0x1d3d
+ #define PCI_VENDOR_ID_WCH 0x4348
+ #define PCI_DEVICE_ID_WCH_CH353_4S 0x3453
+ #define PCI_DEVICE_ID_WCH_CH353_2S1PF 0x5046
+ #define PCI_DEVICE_ID_WCH_CH353_2S1P 0x7053
+ #define PCI_VENDOR_ID_AGESTAR 0x5372
+ #define PCI_DEVICE_ID_AGESTAR_9375 0x6872
+ #define PCI_VENDOR_ID_ASIX 0x9710
/* Unknown vendors/cards - this should not be in linux/pci_ids.h */
#define PCI_SUBDEVICE_ID_UNKNOWN_0x1584 0x1584
.subvendor = PCI_ANY_ID,
.subdevice = PCI_ANY_ID,
.setup = pci_omegapci_setup,
- },
+ },
+ /* WCH CH353 2S1P card (16550 clone) */
+ {
+ .vendor = PCI_VENDOR_ID_WCH,
+ .device = PCI_DEVICE_ID_WCH_CH353_2S1P,
+ .subvendor = PCI_ANY_ID,
+ .subdevice = PCI_ANY_ID,
+ .setup = pci_wch_ch353_setup,
+ },
+ /* WCH CH353 4S card (16550 clone) */
+ {
+ .vendor = PCI_VENDOR_ID_WCH,
+ .device = PCI_DEVICE_ID_WCH_CH353_4S,
+ .subvendor = PCI_ANY_ID,
+ .subdevice = PCI_ANY_ID,
+ .setup = pci_wch_ch353_setup,
+ },
+ /* WCH CH353 2S1PF card (16550 clone) */
+ {
+ .vendor = PCI_VENDOR_ID_WCH,
+ .device = PCI_DEVICE_ID_WCH_CH353_2S1PF,
+ .subvendor = PCI_ANY_ID,
+ .subdevice = PCI_ANY_ID,
+ .setup = pci_wch_ch353_setup,
+ },
+ /*
+ * ASIX devices with FIFO bug
+ */
+ {
+ .vendor = PCI_VENDOR_ID_ASIX,
+ .device = PCI_ANY_ID,
+ .subvendor = PCI_ANY_ID,
+ .subdevice = PCI_ANY_ID,
+ .setup = pci_asix_setup,
+ },
/*
* Default "match everything" terminator entry
*/
pbn_panacom,
pbn_panacom2,
pbn_panacom4,
- pbn_exsys_4055,
pbn_plx_romulus,
pbn_oxsemi,
pbn_oxsemi_1_4000000,
.reg_shift = 7,
},
- [pbn_exsys_4055] = {
- .flags = FL_BASE2,
- .num_ports = 4,
- .base_baud = 115200,
- .uart_offset = 8,
- },
-
/* I think this entry is broken - the first_offset looks wrong --rmk */
[pbn_plx_romulus] = {
.flags = FL_BASE2,
},
};
- static const struct pci_device_id softmodem_blacklist[] = {
+ static const struct pci_device_id blacklist[] = {
+ /* softmodems */
{ PCI_VDEVICE(AL, 0x5457), }, /* ALi Corporation M5457 AC'97 Modem */
{ PCI_VDEVICE(MOTOROLA, 0x3052), }, /* Motorola Si3052-based modem */
{ PCI_DEVICE(0x1543, 0x3052), }, /* Si3052-based modem, default IDs */
+
+ /* multi-io cards handled by parport_serial */
+ { PCI_DEVICE(0x4348, 0x7053), }, /* WCH CH353 2S1P */
};
/*
static int __devinit
serial_pci_guess_board(struct pci_dev *dev, struct pciserial_board *board)
{
- const struct pci_device_id *blacklist;
+ const struct pci_device_id *bldev;
int num_iomem, num_port, first_port = -1, i;
/*
/*
* Do not access blacklisted devices that are known not to
- * feature serial ports.
+ * feature serial ports or are handled by other modules.
*/
- for (blacklist = softmodem_blacklist;
- blacklist < softmodem_blacklist + ARRAY_SIZE(softmodem_blacklist);
- blacklist++) {
- if (dev->vendor == blacklist->vendor &&
- dev->device == blacklist->device)
+ for (bldev = blacklist;
+ bldev < blacklist + ARRAY_SIZE(blacklist);
+ bldev++) {
+ if (dev->vendor == bldev->vendor &&
+ dev->device == bldev->device)
return -ENODEV;
}
struct serial_private *
pciserial_init_ports(struct pci_dev *dev, const struct pciserial_board *board)
{
- struct uart_port serial_port;
+ struct uart_8250_port uart;
struct serial_private *priv;
struct pci_serial_quirk *quirk;
int rc, nr_ports, i;
priv->dev = dev;
priv->quirk = quirk;
- memset(&serial_port, 0, sizeof(struct uart_port));
- serial_port.flags = UPF_SKIP_TEST | UPF_BOOT_AUTOCONF | UPF_SHARE_IRQ;
- serial_port.uartclk = board->base_baud * 16;
- serial_port.irq = get_pci_irq(dev, board);
- serial_port.dev = &dev->dev;
+ memset(&uart, 0, sizeof(uart));
+ uart.port.flags = UPF_SKIP_TEST | UPF_BOOT_AUTOCONF | UPF_SHARE_IRQ;
+ uart.port.uartclk = board->base_baud * 16;
+ uart.port.irq = get_pci_irq(dev, board);
+ uart.port.dev = &dev->dev;
for (i = 0; i < nr_ports; i++) {
- if (quirk->setup(priv, board, &serial_port, i))
+ if (quirk->setup(priv, board, &uart, i))
break;
#ifdef SERIAL_DEBUG_PCI
printk(KERN_DEBUG "Setup PCI port: port %lx, irq %d, type %d\n",
- serial_port.iobase, serial_port.irq, serial_port.iotype);
+ uart.port.iobase, uart.port.irq, uart.port.iotype);
#endif
- priv->line[i] = serial8250_register_port(&serial_port);
+ priv->line[i] = serial8250_register_8250_port(&uart);
if (priv->line[i] < 0) {
printk(KERN_WARNING "Couldn't register serial port %s: %d\n", pci_name(dev), priv->line[i]);
break;
{ PCI_VENDOR_ID_PLX, PCI_DEVICE_ID_PLX_9050,
PCI_SUBVENDOR_ID_EXSYS,
PCI_SUBDEVICE_ID_EXSYS_4055, 0, 0,
- pbn_exsys_4055 },
+ pbn_b2_4_115200 },
/*
* Megawolf Romulus PCI Serial Card, from Mike Hudson
* (Exoray@isys.ca)
PCI_ANY_ID, PCI_ANY_ID, 0, 0,
pbn_omegapci },
+ /*
+ * AgeStar as-prs2-009
+ */
+ { PCI_VENDOR_ID_AGESTAR, PCI_DEVICE_ID_AGESTAR_9375,
+ PCI_ANY_ID, PCI_ANY_ID,
+ 0, 0, pbn_b0_bt_2_115200 },
+
+ /*
+ * WCH CH353 series devices: The 2S1P is handled by parport_serial
+ * so not listed here.
+ */
+ { PCI_VENDOR_ID_WCH, PCI_DEVICE_ID_WCH_CH353_4S,
+ PCI_ANY_ID, PCI_ANY_ID,
+ 0, 0, pbn_b0_bt_4_115200 },
+
+ { PCI_VENDOR_ID_WCH, PCI_DEVICE_ID_WCH_CH353_2S1PF,
+ PCI_ANY_ID, PCI_ANY_ID,
+ 0, 0, pbn_b0_bt_2_115200 },
+
/*
* These entries match devices with class COMMUNICATION_SERIAL,
* COMMUNICATION_MODEM or COMMUNICATION_MULTISERIAL
pciserial_resume_ports(priv);
}
-static struct pci_error_handlers serial8250_err_handler = {
+static const struct pci_error_handlers serial8250_err_handler = {
.error_detected = serial8250_io_error_detected,
.slot_reset = serial8250_io_slot_reset,
.resume = serial8250_io_resume,
#include <linux/slab.h>
#include <linux/tty.h>
#include <linux/tty_flip.h>
+ #include <linux/platform_device.h>
#include <linux/io.h>
- #include <linux/dma-mapping.h>
#include <linux/clk.h>
#include <linux/serial_core.h>
#include <linux/irq.h>
#include <linux/pm_runtime.h>
#include <linux/of.h>
+ #include <linux/gpio.h>
+ #include <linux/pinctrl/consumer.h>
- #include <plat/dma.h>
- #include <plat/dmtimer.h>
#include <plat/omap-serial.h>
#define UART_BUILD_REVISION(x, y) (((x) << 8) | (y))
#define OMAP_UART_SCR_RX_TRIG_GRANU1_MASK (1 << 7)
/* FCR register bitmasks */
- #define OMAP_UART_FCR_RX_FIFO_TRIG_SHIFT 6
#define OMAP_UART_FCR_RX_FIFO_TRIG_MASK (0x3 << 6)
+ #define OMAP_UART_FCR_TX_FIFO_TRIG_MASK (0x3 << 4)
/* MVR register bitmasks */
#define OMAP_UART_MVR_SCHEME_SHIFT 30
#define OMAP_UART_MVR_MAJ_SHIFT 8
#define OMAP_UART_MVR_MIN_MASK 0x3f
+ struct uart_omap_port {
+ struct uart_port port;
+ struct uart_omap_dma uart_dma;
+ struct device *dev;
+
+ unsigned char ier;
+ unsigned char lcr;
+ unsigned char mcr;
+ unsigned char fcr;
+ unsigned char efr;
+ unsigned char dll;
+ unsigned char dlh;
+ unsigned char mdr1;
+ unsigned char scr;
+
+ int use_dma;
+ /*
+ * Some bits in registers are cleared on a read, so they must
+ * be saved whenever the register is read but the bits will not
+ * be immediately processed.
+ */
+ unsigned int lsr_break_flag;
+ unsigned char msr_saved_flags;
+ char name[20];
+ unsigned long port_activity;
+ u32 context_loss_cnt;
+ u32 errata;
+ u8 wakeups_enabled;
+ unsigned int irq_pending:1;
+
+ int DTR_gpio;
+ int DTR_inverted;
+ int DTR_active;
+
+ struct pm_qos_request pm_qos_request;
+ u32 latency;
+ u32 calc_latency;
+ struct work_struct qos_work;
+ struct pinctrl *pins;
+ };
+
+ #define to_uart_omap_port(p) ((container_of((p), struct uart_omap_port, port)))
+
static struct uart_omap_port *ui[OMAP_MAX_HSUART_PORTS];
/* Forward declaration of functions */
- static void uart_tx_dma_callback(int lch, u16 ch_status, void *data);
- static void serial_omap_rxdma_poll(unsigned long uart_no);
- static int serial_omap_start_rxdma(struct uart_omap_port *up);
static void serial_omap_mdr1_errataset(struct uart_omap_port *up, u8 mdr1);
static struct workqueue_struct *serial_omap_uart_wq;
serial_out(up, UART_FCR, 0);
}
+ static int serial_omap_get_context_loss_count(struct uart_omap_port *up)
+ {
+ struct omap_uart_port_info *pdata = up->dev->platform_data;
+
+ if (!pdata || !pdata->get_context_loss_count)
+ return 0;
+
+ return pdata->get_context_loss_count(up->dev);
+ }
+
+ static void serial_omap_set_forceidle(struct uart_omap_port *up)
+ {
+ struct omap_uart_port_info *pdata = up->dev->platform_data;
+
+ if (!pdata || !pdata->set_forceidle)
+ return;
+
+ pdata->set_forceidle(up->dev);
+ }
+
+ static void serial_omap_set_noidle(struct uart_omap_port *up)
+ {
+ struct omap_uart_port_info *pdata = up->dev->platform_data;
+
+ if (!pdata || !pdata->set_noidle)
+ return;
+
+ pdata->set_noidle(up->dev);
+ }
+
+ static void serial_omap_enable_wakeup(struct uart_omap_port *up, bool enable)
+ {
+ struct omap_uart_port_info *pdata = up->dev->platform_data;
+
+ if (!pdata || !pdata->enable_wakeup)
+ return;
+
+ pdata->enable_wakeup(up->dev, enable);
+ }
+
/*
* serial_omap_get_divisor - calculate divisor value
* @port: uart port info
return port->uartclk/(baud * divisor);
}
- static void serial_omap_stop_rxdma(struct uart_omap_port *up)
- {
- if (up->uart_dma.rx_dma_used) {
- del_timer(&up->uart_dma.rx_timer);
- omap_stop_dma(up->uart_dma.rx_dma_channel);
- omap_free_dma(up->uart_dma.rx_dma_channel);
- up->uart_dma.rx_dma_channel = OMAP_UART_DMA_CH_FREE;
- up->uart_dma.rx_dma_used = false;
- pm_runtime_mark_last_busy(&up->pdev->dev);
- pm_runtime_put_autosuspend(&up->pdev->dev);
- }
- }
-
static void serial_omap_enable_ms(struct uart_port *port)
{
- struct uart_omap_port *up = (struct uart_omap_port *)port;
+ struct uart_omap_port *up = to_uart_omap_port(port);
dev_dbg(up->port.dev, "serial_omap_enable_ms+%d\n", up->port.line);
- pm_runtime_get_sync(&up->pdev->dev);
+ pm_runtime_get_sync(up->dev);
up->ier |= UART_IER_MSI;
serial_out(up, UART_IER, up->ier);
- pm_runtime_put(&up->pdev->dev);
+ pm_runtime_mark_last_busy(up->dev);
+ pm_runtime_put_autosuspend(up->dev);
}
static void serial_omap_stop_tx(struct uart_port *port)
{
- struct uart_omap_port *up = (struct uart_omap_port *)port;
- struct omap_uart_port_info *pdata = up->pdev->dev.platform_data;
+ struct uart_omap_port *up = to_uart_omap_port(port);
- if (up->use_dma &&
- up->uart_dma.tx_dma_channel != OMAP_UART_DMA_CH_FREE) {
- /*
- * Check if dma is still active. If yes do nothing,
- * return. Else stop dma
- */
- if (omap_get_dma_active_status(up->uart_dma.tx_dma_channel))
- return;
- omap_stop_dma(up->uart_dma.tx_dma_channel);
- omap_free_dma(up->uart_dma.tx_dma_channel);
- up->uart_dma.tx_dma_channel = OMAP_UART_DMA_CH_FREE;
- pm_runtime_mark_last_busy(&up->pdev->dev);
- pm_runtime_put_autosuspend(&up->pdev->dev);
- }
-
- pm_runtime_get_sync(&up->pdev->dev);
+ pm_runtime_get_sync(up->dev);
if (up->ier & UART_IER_THRI) {
up->ier &= ~UART_IER_THRI;
serial_out(up, UART_IER, up->ier);
}
- if (!up->use_dma && pdata && pdata->set_forceidle)
- pdata->set_forceidle(up->pdev);
+ serial_omap_set_forceidle(up);
- pm_runtime_mark_last_busy(&up->pdev->dev);
- pm_runtime_put_autosuspend(&up->pdev->dev);
+ pm_runtime_mark_last_busy(up->dev);
+ pm_runtime_put_autosuspend(up->dev);
}
static void serial_omap_stop_rx(struct uart_port *port)
{
- struct uart_omap_port *up = (struct uart_omap_port *)port;
+ struct uart_omap_port *up = to_uart_omap_port(port);
- pm_runtime_get_sync(&up->pdev->dev);
- if (up->use_dma)
- serial_omap_stop_rxdma(up);
+ pm_runtime_get_sync(up->dev);
up->ier &= ~UART_IER_RLSI;
up->port.read_status_mask &= ~UART_LSR_DR;
serial_out(up, UART_IER, up->ier);
- pm_runtime_mark_last_busy(&up->pdev->dev);
- pm_runtime_put_autosuspend(&up->pdev->dev);
- }
-
- static inline void receive_chars(struct uart_omap_port *up,
- unsigned int *status)
- {
- struct tty_struct *tty = up->port.state->port.tty;
- unsigned int flag, lsr = *status;
- unsigned char ch = 0;
- int max_count = 256;
-
- do {
- if (likely(lsr & UART_LSR_DR))
- ch = serial_in(up, UART_RX);
- flag = TTY_NORMAL;
- up->port.icount.rx++;
-
- if (unlikely(lsr & UART_LSR_BRK_ERROR_BITS)) {
- /*
- * For statistics only
- */
- if (lsr & UART_LSR_BI) {
- lsr &= ~(UART_LSR_FE | UART_LSR_PE);
- up->port.icount.brk++;
- /*
- * We do the SysRQ and SAK checking
- * here because otherwise the break
- * may get masked by ignore_status_mask
- * or read_status_mask.
- */
- if (uart_handle_break(&up->port))
- goto ignore_char;
- } else if (lsr & UART_LSR_PE) {
- up->port.icount.parity++;
- } else if (lsr & UART_LSR_FE) {
- up->port.icount.frame++;
- }
-
- if (lsr & UART_LSR_OE)
- up->port.icount.overrun++;
-
- /*
- * Mask off conditions which should be ignored.
- */
- lsr &= up->port.read_status_mask;
-
- #ifdef CONFIG_SERIAL_OMAP_CONSOLE
- if (up->port.line == up->port.cons->index) {
- /* Recover the break flag from console xmit */
- lsr |= up->lsr_break_flag;
- }
- #endif
- if (lsr & UART_LSR_BI)
- flag = TTY_BREAK;
- else if (lsr & UART_LSR_PE)
- flag = TTY_PARITY;
- else if (lsr & UART_LSR_FE)
- flag = TTY_FRAME;
- }
-
- if (uart_handle_sysrq_char(&up->port, ch))
- goto ignore_char;
- uart_insert_char(&up->port, lsr, UART_LSR_OE, ch, flag);
- ignore_char:
- lsr = serial_in(up, UART_LSR);
- } while ((lsr & (UART_LSR_DR | UART_LSR_BI)) && (max_count-- > 0));
- spin_unlock(&up->port.lock);
- tty_flip_buffer_push(tty);
- spin_lock(&up->port.lock);
+ pm_runtime_mark_last_busy(up->dev);
+ pm_runtime_put_autosuspend(up->dev);
}
- static void transmit_chars(struct uart_omap_port *up)
+ static void transmit_chars(struct uart_omap_port *up, unsigned int lsr)
{
struct circ_buf *xmit = &up->port.state->xmit;
int count;
+ if (!(lsr & UART_LSR_THRE))
+ return;
+
if (up->port.x_char) {
serial_out(up, UART_TX, up->port.x_char);
up->port.icount.tx++;
break;
} while (--count > 0);
- if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
+ if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS) {
+ spin_unlock(&up->port.lock);
uart_write_wakeup(&up->port);
+ spin_lock(&up->port.lock);
+ }
if (uart_circ_empty(xmit))
serial_omap_stop_tx(&up->port);
static void serial_omap_start_tx(struct uart_port *port)
{
- struct uart_omap_port *up = (struct uart_omap_port *)port;
- struct omap_uart_port_info *pdata = up->pdev->dev.platform_data;
- struct circ_buf *xmit;
- unsigned int start;
- int ret = 0;
-
- if (!up->use_dma) {
- pm_runtime_get_sync(&up->pdev->dev);
- serial_omap_enable_ier_thri(up);
- if (pdata && pdata->set_noidle)
- pdata->set_noidle(up->pdev);
- pm_runtime_mark_last_busy(&up->pdev->dev);
- pm_runtime_put_autosuspend(&up->pdev->dev);
- return;
- }
-
- if (up->uart_dma.tx_dma_used)
- return;
-
- xmit = &up->port.state->xmit;
-
- if (up->uart_dma.tx_dma_channel == OMAP_UART_DMA_CH_FREE) {
- pm_runtime_get_sync(&up->pdev->dev);
- ret = omap_request_dma(up->uart_dma.uart_dma_tx,
- "UART Tx DMA",
- (void *)uart_tx_dma_callback, up,
- &(up->uart_dma.tx_dma_channel));
+ struct uart_omap_port *up = to_uart_omap_port(port);
- if (ret < 0) {
- serial_omap_enable_ier_thri(up);
- return;
- }
- }
- spin_lock(&(up->uart_dma.tx_lock));
- up->uart_dma.tx_dma_used = true;
- spin_unlock(&(up->uart_dma.tx_lock));
-
- start = up->uart_dma.tx_buf_dma_phys +
- (xmit->tail & (UART_XMIT_SIZE - 1));
-
- up->uart_dma.tx_buf_size = uart_circ_chars_pending(xmit);
- /*
- * It is a circular buffer. See if the buffer has wounded back.
- * If yes it will have to be transferred in two separate dma
- * transfers
- */
- if (start + up->uart_dma.tx_buf_size >=
- up->uart_dma.tx_buf_dma_phys + UART_XMIT_SIZE)
- up->uart_dma.tx_buf_size =
- (up->uart_dma.tx_buf_dma_phys +
- UART_XMIT_SIZE) - start;
-
- omap_set_dma_dest_params(up->uart_dma.tx_dma_channel, 0,
- OMAP_DMA_AMODE_CONSTANT,
- up->uart_dma.uart_base, 0, 0);
- omap_set_dma_src_params(up->uart_dma.tx_dma_channel, 0,
- OMAP_DMA_AMODE_POST_INC, start, 0, 0);
- omap_set_dma_transfer_params(up->uart_dma.tx_dma_channel,
- OMAP_DMA_DATA_TYPE_S8,
- up->uart_dma.tx_buf_size, 1,
- OMAP_DMA_SYNC_ELEMENT,
- up->uart_dma.uart_dma_tx, 0);
- /* FIXME: Cache maintenance needed here? */
- omap_start_dma(up->uart_dma.tx_dma_channel);
+ pm_runtime_get_sync(up->dev);
+ serial_omap_enable_ier_thri(up);
+ serial_omap_set_noidle(up);
+ pm_runtime_mark_last_busy(up->dev);
+ pm_runtime_put_autosuspend(up->dev);
}
static unsigned int check_modem_status(struct uart_omap_port *up)
return status;
}
+ static void serial_omap_rlsi(struct uart_omap_port *up, unsigned int lsr)
+ {
+ unsigned int flag;
+
+ up->port.icount.rx++;
+ flag = TTY_NORMAL;
+
+ if (lsr & UART_LSR_BI) {
+ flag = TTY_BREAK;
+ lsr &= ~(UART_LSR_FE | UART_LSR_PE);
+ up->port.icount.brk++;
+ /*
+ * We do the SysRQ and SAK checking
+ * here because otherwise the break
+ * may get masked by ignore_status_mask
+ * or read_status_mask.
+ */
+ if (uart_handle_break(&up->port))
+ return;
+
+ }
+
+ if (lsr & UART_LSR_PE) {
+ flag = TTY_PARITY;
+ up->port.icount.parity++;
+ }
+
+ if (lsr & UART_LSR_FE) {
+ flag = TTY_FRAME;
+ up->port.icount.frame++;
+ }
+
+ if (lsr & UART_LSR_OE)
+ up->port.icount.overrun++;
+
+ #ifdef CONFIG_SERIAL_OMAP_CONSOLE
+ if (up->port.line == up->port.cons->index) {
+ /* Recover the break flag from console xmit */
+ lsr |= up->lsr_break_flag;
+ }
+ #endif
+ uart_insert_char(&up->port, lsr, UART_LSR_OE, 0, flag);
+ }
+
+ static void serial_omap_rdi(struct uart_omap_port *up, unsigned int lsr)
+ {
+ unsigned char ch = 0;
+ unsigned int flag;
+
+ if (!(lsr & UART_LSR_DR))
+ return;
+
+ ch = serial_in(up, UART_RX);
+ flag = TTY_NORMAL;
+ up->port.icount.rx++;
+
+ if (uart_handle_sysrq_char(&up->port, ch))
+ return;
+
+ uart_insert_char(&up->port, lsr, UART_LSR_OE, ch, flag);
+ }
+
/**
* serial_omap_irq() - This handles the interrupt from one port
* @irq: uart port irq number
* @dev_id: uart port info
*/
- static inline irqreturn_t serial_omap_irq(int irq, void *dev_id)
+ static irqreturn_t serial_omap_irq(int irq, void *dev_id)
{
struct uart_omap_port *up = dev_id;
+ struct tty_struct *tty = up->port.state->port.tty;
unsigned int iir, lsr;
- unsigned long flags;
+ unsigned int type;
+ irqreturn_t ret = IRQ_NONE;
+ int max_count = 256;
- pm_runtime_get_sync(&up->pdev->dev);
- iir = serial_in(up, UART_IIR);
- if (iir & UART_IIR_NO_INT) {
- pm_runtime_mark_last_busy(&up->pdev->dev);
- pm_runtime_put_autosuspend(&up->pdev->dev);
- return IRQ_NONE;
- }
+ spin_lock(&up->port.lock);
+ pm_runtime_get_sync(up->dev);
- spin_lock_irqsave(&up->port.lock, flags);
- lsr = serial_in(up, UART_LSR);
- if (iir & UART_IIR_RLSI) {
- if (!up->use_dma) {
- if (lsr & UART_LSR_DR)
- receive_chars(up, &lsr);
- } else {
- up->ier &= ~(UART_IER_RDI | UART_IER_RLSI);
- serial_out(up, UART_IER, up->ier);
- if ((serial_omap_start_rxdma(up) != 0) &&
- (lsr & UART_LSR_DR))
- receive_chars(up, &lsr);
+ do {
+ iir = serial_in(up, UART_IIR);
+ if (iir & UART_IIR_NO_INT)
+ break;
+
+ ret = IRQ_HANDLED;
+ lsr = serial_in(up, UART_LSR);
+
+ /* extract IRQ type from IIR register */
+ type = iir & 0x3e;
+
+ switch (type) {
+ case UART_IIR_MSI:
+ check_modem_status(up);
+ break;
+ case UART_IIR_THRI:
+ transmit_chars(up, lsr);
+ break;
+ case UART_IIR_RX_TIMEOUT:
+ /* FALLTHROUGH */
+ case UART_IIR_RDI:
+ serial_omap_rdi(up, lsr);
+ break;
+ case UART_IIR_RLSI:
+ serial_omap_rlsi(up, lsr);
+ break;
+ case UART_IIR_CTS_RTS_DSR:
+ /* simply try again */
+ break;
+ case UART_IIR_XOFF:
+ /* FALLTHROUGH */
+ default:
+ break;
}
- }
+ } while (!(iir & UART_IIR_NO_INT) && max_count--);
- check_modem_status(up);
- if ((lsr & UART_LSR_THRE) && (iir & UART_IIR_THRI))
- transmit_chars(up);
+ spin_unlock(&up->port.lock);
- spin_unlock_irqrestore(&up->port.lock, flags);
- pm_runtime_mark_last_busy(&up->pdev->dev);
- pm_runtime_put_autosuspend(&up->pdev->dev);
+ tty_flip_buffer_push(tty);
+ pm_runtime_mark_last_busy(up->dev);
+ pm_runtime_put_autosuspend(up->dev);
up->port_activity = jiffies;
- return IRQ_HANDLED;
+
+ return ret;
}
static unsigned int serial_omap_tx_empty(struct uart_port *port)
{
- struct uart_omap_port *up = (struct uart_omap_port *)port;
+ struct uart_omap_port *up = to_uart_omap_port(port);
unsigned long flags = 0;
unsigned int ret = 0;
- pm_runtime_get_sync(&up->pdev->dev);
+ pm_runtime_get_sync(up->dev);
dev_dbg(up->port.dev, "serial_omap_tx_empty+%d\n", up->port.line);
spin_lock_irqsave(&up->port.lock, flags);
ret = serial_in(up, UART_LSR) & UART_LSR_TEMT ? TIOCSER_TEMT : 0;
spin_unlock_irqrestore(&up->port.lock, flags);
- pm_runtime_put(&up->pdev->dev);
+ pm_runtime_mark_last_busy(up->dev);
+ pm_runtime_put_autosuspend(up->dev);
return ret;
}
static unsigned int serial_omap_get_mctrl(struct uart_port *port)
{
- struct uart_omap_port *up = (struct uart_omap_port *)port;
+ struct uart_omap_port *up = to_uart_omap_port(port);
unsigned int status;
unsigned int ret = 0;
- pm_runtime_get_sync(&up->pdev->dev);
+ pm_runtime_get_sync(up->dev);
status = check_modem_status(up);
- pm_runtime_put(&up->pdev->dev);
+ pm_runtime_mark_last_busy(up->dev);
+ pm_runtime_put_autosuspend(up->dev);
dev_dbg(up->port.dev, "serial_omap_get_mctrl+%d\n", up->port.line);
static void serial_omap_set_mctrl(struct uart_port *port, unsigned int mctrl)
{
- struct uart_omap_port *up = (struct uart_omap_port *)port;
+ struct uart_omap_port *up = to_uart_omap_port(port);
unsigned char mcr = 0;
dev_dbg(up->port.dev, "serial_omap_set_mctrl+%d\n", up->port.line);
if (mctrl & TIOCM_LOOP)
mcr |= UART_MCR_LOOP;
- pm_runtime_get_sync(&up->pdev->dev);
+ pm_runtime_get_sync(up->dev);
up->mcr = serial_in(up, UART_MCR);
up->mcr |= mcr;
serial_out(up, UART_MCR, up->mcr);
- pm_runtime_put(&up->pdev->dev);
+ pm_runtime_mark_last_busy(up->dev);
+ pm_runtime_put_autosuspend(up->dev);
+
+ if (gpio_is_valid(up->DTR_gpio) &&
+ !!(mctrl & TIOCM_DTR) != up->DTR_active) {
+ up->DTR_active = !up->DTR_active;
+ if (gpio_cansleep(up->DTR_gpio))
+ schedule_work(&up->qos_work);
+ else
+ gpio_set_value(up->DTR_gpio,
+ up->DTR_active != up->DTR_inverted);
+ }
}
static void serial_omap_break_ctl(struct uart_port *port, int break_state)
{
- struct uart_omap_port *up = (struct uart_omap_port *)port;
+ struct uart_omap_port *up = to_uart_omap_port(port);
unsigned long flags = 0;
dev_dbg(up->port.dev, "serial_omap_break_ctl+%d\n", up->port.line);
- pm_runtime_get_sync(&up->pdev->dev);
+ pm_runtime_get_sync(up->dev);
spin_lock_irqsave(&up->port.lock, flags);
if (break_state == -1)
up->lcr |= UART_LCR_SBC;
up->lcr &= ~UART_LCR_SBC;
serial_out(up, UART_LCR, up->lcr);
spin_unlock_irqrestore(&up->port.lock, flags);
- pm_runtime_put(&up->pdev->dev);
+ pm_runtime_mark_last_busy(up->dev);
+ pm_runtime_put_autosuspend(up->dev);
}
static int serial_omap_startup(struct uart_port *port)
{
- struct uart_omap_port *up = (struct uart_omap_port *)port;
+ struct uart_omap_port *up = to_uart_omap_port(port);
unsigned long flags = 0;
int retval;
dev_dbg(up->port.dev, "serial_omap_startup+%d\n", up->port.line);
- pm_runtime_get_sync(&up->pdev->dev);
+ pm_runtime_get_sync(up->dev);
/*
* Clear the FIFO buffers and disable them.
* (they will be reenabled in set_termios())
spin_unlock_irqrestore(&up->port.lock, flags);
up->msr_saved_flags = 0;
- if (up->use_dma) {
- free_page((unsigned long)up->port.state->xmit.buf);
- up->port.state->xmit.buf = dma_alloc_coherent(NULL,
- UART_XMIT_SIZE,
- (dma_addr_t *)&(up->uart_dma.tx_buf_dma_phys),
- 0);
- init_timer(&(up->uart_dma.rx_timer));
- up->uart_dma.rx_timer.function = serial_omap_rxdma_poll;
- up->uart_dma.rx_timer.data = up->port.line;
- /* Currently the buffer size is 4KB. Can increase it */
- up->uart_dma.rx_buf = dma_alloc_coherent(NULL,
- up->uart_dma.rx_buf_size,
- (dma_addr_t *)&(up->uart_dma.rx_buf_dma_phys), 0);
- }
/*
* Finally, enable interrupts. Note: Modem status interrupts
* are set via set_termios(), which will be occurring imminently
/* Enable module level wake up */
serial_out(up, UART_OMAP_WER, OMAP_UART_WER_MOD_WKUP);
- pm_runtime_mark_last_busy(&up->pdev->dev);
- pm_runtime_put_autosuspend(&up->pdev->dev);
+ pm_runtime_mark_last_busy(up->dev);
+ pm_runtime_put_autosuspend(up->dev);
up->port_activity = jiffies;
return 0;
}
static void serial_omap_shutdown(struct uart_port *port)
{
- struct uart_omap_port *up = (struct uart_omap_port *)port;
+ struct uart_omap_port *up = to_uart_omap_port(port);
unsigned long flags = 0;
dev_dbg(up->port.dev, "serial_omap_shutdown+%d\n", up->port.line);
- pm_runtime_get_sync(&up->pdev->dev);
+ pm_runtime_get_sync(up->dev);
/*
* Disable interrupts from this port
*/
*/
if (serial_in(up, UART_LSR) & UART_LSR_DR)
(void) serial_in(up, UART_RX);
- if (up->use_dma) {
- dma_free_coherent(up->port.dev,
- UART_XMIT_SIZE, up->port.state->xmit.buf,
- up->uart_dma.tx_buf_dma_phys);
- up->port.state->xmit.buf = NULL;
- serial_omap_stop_rx(port);
- dma_free_coherent(up->port.dev,
- up->uart_dma.rx_buf_size, up->uart_dma.rx_buf,
- up->uart_dma.rx_buf_dma_phys);
- up->uart_dma.rx_buf = NULL;
- }
- pm_runtime_put(&up->pdev->dev);
+ pm_runtime_mark_last_busy(up->dev);
+ pm_runtime_put_autosuspend(up->dev);
free_irq(up->port.irq, up);
}
/*
* IXON Flag:
- * Enable XON/XOFF flow control on output.
- * Transmit XON1, XOFF1
+ * Flow control for OMAP.TX
+ * OMAP.RX should listen for XON/XOFF
*/
if (termios->c_iflag & IXON)
- up->efr |= OMAP_UART_SW_TX;
+ up->efr |= OMAP_UART_SW_RX;
/*
* IXOFF Flag:
- * Enable XON/XOFF flow control on input.
- * Receiver compares XON1, XOFF1.
+ * Flow control for OMAP.RX
+ * OMAP.TX should send XON/XOFF
*/
if (termios->c_iflag & IXOFF)
- up->efr |= OMAP_UART_SW_RX;
+ up->efr |= OMAP_UART_SW_TX;
serial_out(up, UART_EFR, up->efr | UART_EFR_ECB);
serial_out(up, UART_LCR, UART_LCR_CONF_MODE_A);
qos_work);
pm_qos_update_request(&up->pm_qos_request, up->latency);
+ if (gpio_is_valid(up->DTR_gpio))
+ gpio_set_value_cansleep(up->DTR_gpio,
+ up->DTR_active != up->DTR_inverted);
}
static void
serial_omap_set_termios(struct uart_port *port, struct ktermios *termios,
struct ktermios *old)
{
- struct uart_omap_port *up = (struct uart_omap_port *)port;
+ struct uart_omap_port *up = to_uart_omap_port(port);
unsigned char cval = 0;
unsigned char efr = 0;
unsigned long flags = 0;
up->fcr = UART_FCR_R_TRIG_01 | UART_FCR_T_TRIG_01 |
UART_FCR_ENABLE_FIFO;
- if (up->use_dma)
- up->fcr |= UART_FCR_DMA_SELECT;
/*
* Ok, we're now changing the port state. Do it with
* interrupts disabled.
*/
- pm_runtime_get_sync(&up->pdev->dev);
+ pm_runtime_get_sync(up->dev);
spin_lock_irqsave(&up->port.lock, flags);
/*
up->scr |= OMAP_UART_SCR_RX_TRIG_GRANU1_MASK;
- if (up->use_dma) {
- serial_out(up, UART_TI752_TLR, 0);
- up->scr |= UART_FCR_TRIGGER_4;
- } else {
- /* Set receive FIFO threshold to 1 byte */
- up->fcr &= ~OMAP_UART_FCR_RX_FIFO_TRIG_MASK;
- up->fcr |= (0x1 << OMAP_UART_FCR_RX_FIFO_TRIG_SHIFT);
- }
+ /* Set receive FIFO threshold to 16 characters and
+ * transmit FIFO threshold to 16 spaces
+ */
+ up->fcr &= ~OMAP_UART_FCR_RX_FIFO_TRIG_MASK;
+ up->fcr &= ~OMAP_UART_FCR_TX_FIFO_TRIG_MASK;
+ up->fcr |= UART_FCR6_R_TRIGGER_16 | UART_FCR6_T_TRIGGER_24 |
+ UART_FCR_ENABLE_FIFO;
serial_out(up, UART_FCR, up->fcr);
serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B);
serial_omap_configure_xonxoff(up, termios);
spin_unlock_irqrestore(&up->port.lock, flags);
- pm_runtime_put(&up->pdev->dev);
+ pm_runtime_mark_last_busy(up->dev);
+ pm_runtime_put_autosuspend(up->dev);
dev_dbg(up->port.dev, "serial_omap_set_termios+%d\n", up->port.line);
}
+ static int serial_omap_set_wake(struct uart_port *port, unsigned int state)
+ {
+ struct uart_omap_port *up = to_uart_omap_port(port);
+
+ serial_omap_enable_wakeup(up, state);
+
+ return 0;
+ }
+
static void
serial_omap_pm(struct uart_port *port, unsigned int state,
unsigned int oldstate)
{
- struct uart_omap_port *up = (struct uart_omap_port *)port;
+ struct uart_omap_port *up = to_uart_omap_port(port);
unsigned char efr;
dev_dbg(up->port.dev, "serial_omap_pm+%d\n", up->port.line);
- pm_runtime_get_sync(&up->pdev->dev);
+ pm_runtime_get_sync(up->dev);
serial_out(up, UART_LCR, UART_LCR_CONF_MODE_B);
efr = serial_in(up, UART_EFR);
serial_out(up, UART_EFR, efr | UART_EFR_ECB);
serial_out(up, UART_EFR, efr);
serial_out(up, UART_LCR, 0);
- if (!device_may_wakeup(&up->pdev->dev)) {
+ if (!device_may_wakeup(up->dev)) {
if (!state)
- pm_runtime_forbid(&up->pdev->dev);
+ pm_runtime_forbid(up->dev);
else
- pm_runtime_allow(&up->pdev->dev);
+ pm_runtime_allow(up->dev);
}
- pm_runtime_put(&up->pdev->dev);
+ pm_runtime_mark_last_busy(up->dev);
+ pm_runtime_put_autosuspend(up->dev);
}
static void serial_omap_release_port(struct uart_port *port)
static void serial_omap_config_port(struct uart_port *port, int flags)
{
- struct uart_omap_port *up = (struct uart_omap_port *)port;
+ struct uart_omap_port *up = to_uart_omap_port(port);
dev_dbg(up->port.dev, "serial_omap_config_port+%d\n",
up->port.line);
static const char *
serial_omap_type(struct uart_port *port)
{
- struct uart_omap_port *up = (struct uart_omap_port *)port;
+ struct uart_omap_port *up = to_uart_omap_port(port);
dev_dbg(up->port.dev, "serial_omap_type+%d\n", up->port.line);
return up->name;
static void serial_omap_poll_put_char(struct uart_port *port, unsigned char ch)
{
- struct uart_omap_port *up = (struct uart_omap_port *)port;
+ struct uart_omap_port *up = to_uart_omap_port(port);
- pm_runtime_get_sync(&up->pdev->dev);
+ pm_runtime_get_sync(up->dev);
wait_for_xmitr(up);
serial_out(up, UART_TX, ch);
- pm_runtime_put(&up->pdev->dev);
+ pm_runtime_mark_last_busy(up->dev);
+ pm_runtime_put_autosuspend(up->dev);
}
static int serial_omap_poll_get_char(struct uart_port *port)
{
- struct uart_omap_port *up = (struct uart_omap_port *)port;
+ struct uart_omap_port *up = to_uart_omap_port(port);
unsigned int status;
- pm_runtime_get_sync(&up->pdev->dev);
+ pm_runtime_get_sync(up->dev);
status = serial_in(up, UART_LSR);
- if (!(status & UART_LSR_DR))
- return NO_POLL_CHAR;
+ if (!(status & UART_LSR_DR)) {
+ status = NO_POLL_CHAR;
+ goto out;
+ }
status = serial_in(up, UART_RX);
- pm_runtime_put(&up->pdev->dev);
+
+ out:
+ pm_runtime_mark_last_busy(up->dev);
+ pm_runtime_put_autosuspend(up->dev);
+
return status;
}
static void serial_omap_console_putchar(struct uart_port *port, int ch)
{
- struct uart_omap_port *up = (struct uart_omap_port *)port;
+ struct uart_omap_port *up = to_uart_omap_port(port);
wait_for_xmitr(up);
serial_out(up, UART_TX, ch);
unsigned int ier;
int locked = 1;
- pm_runtime_get_sync(&up->pdev->dev);
+ pm_runtime_get_sync(up->dev);
local_irq_save(flags);
if (up->port.sysrq)
if (up->msr_saved_flags)
check_modem_status(up);
- pm_runtime_mark_last_busy(&up->pdev->dev);
- pm_runtime_put_autosuspend(&up->pdev->dev);
+ pm_runtime_mark_last_busy(up->dev);
+ pm_runtime_put_autosuspend(up->dev);
if (locked)
spin_unlock(&up->port.lock);
local_irq_restore(flags);
.shutdown = serial_omap_shutdown,
.set_termios = serial_omap_set_termios,
.pm = serial_omap_pm,
+ .set_wake = serial_omap_set_wake,
.type = serial_omap_type,
.release_port = serial_omap_release_port,
.request_port = serial_omap_request_port,
if (up) {
uart_suspend_port(&serial_omap_reg, &up->port);
- flush_work_sync(&up->qos_work);
+ flush_work(&up->qos_work);
}
return 0;
}
#endif
- static void serial_omap_rxdma_poll(unsigned long uart_no)
- {
- struct uart_omap_port *up = ui[uart_no];
- unsigned int curr_dma_pos, curr_transmitted_size;
- int ret = 0;
-
- curr_dma_pos = omap_get_dma_dst_pos(up->uart_dma.rx_dma_channel);
- if ((curr_dma_pos == up->uart_dma.prev_rx_dma_pos) ||
- (curr_dma_pos == 0)) {
- if (jiffies_to_msecs(jiffies - up->port_activity) <
- up->uart_dma.rx_timeout) {
- mod_timer(&up->uart_dma.rx_timer, jiffies +
- usecs_to_jiffies(up->uart_dma.rx_poll_rate));
- } else {
- serial_omap_stop_rxdma(up);
- up->ier |= (UART_IER_RDI | UART_IER_RLSI);
- serial_out(up, UART_IER, up->ier);
- }
- return;
- }
-
- curr_transmitted_size = curr_dma_pos -
- up->uart_dma.prev_rx_dma_pos;
- up->port.icount.rx += curr_transmitted_size;
- tty_insert_flip_string(up->port.state->port.tty,
- up->uart_dma.rx_buf +
- (up->uart_dma.prev_rx_dma_pos -
- up->uart_dma.rx_buf_dma_phys),
- curr_transmitted_size);
- tty_flip_buffer_push(up->port.state->port.tty);
- up->uart_dma.prev_rx_dma_pos = curr_dma_pos;
- if (up->uart_dma.rx_buf_size +
- up->uart_dma.rx_buf_dma_phys == curr_dma_pos) {
- ret = serial_omap_start_rxdma(up);
- if (ret < 0) {
- serial_omap_stop_rxdma(up);
- up->ier |= (UART_IER_RDI | UART_IER_RLSI);
- serial_out(up, UART_IER, up->ier);
- }
- } else {
- mod_timer(&up->uart_dma.rx_timer, jiffies +
- usecs_to_jiffies(up->uart_dma.rx_poll_rate));
- }
- up->port_activity = jiffies;
- }
-
- static void uart_rx_dma_callback(int lch, u16 ch_status, void *data)
- {
- return;
- }
-
- static int serial_omap_start_rxdma(struct uart_omap_port *up)
- {
- int ret = 0;
-
- if (up->uart_dma.rx_dma_channel == -1) {
- pm_runtime_get_sync(&up->pdev->dev);
- ret = omap_request_dma(up->uart_dma.uart_dma_rx,
- "UART Rx DMA",
- (void *)uart_rx_dma_callback, up,
- &(up->uart_dma.rx_dma_channel));
- if (ret < 0)
- return ret;
-
- omap_set_dma_src_params(up->uart_dma.rx_dma_channel, 0,
- OMAP_DMA_AMODE_CONSTANT,
- up->uart_dma.uart_base, 0, 0);
- omap_set_dma_dest_params(up->uart_dma.rx_dma_channel, 0,
- OMAP_DMA_AMODE_POST_INC,
- up->uart_dma.rx_buf_dma_phys, 0, 0);
- omap_set_dma_transfer_params(up->uart_dma.rx_dma_channel,
- OMAP_DMA_DATA_TYPE_S8,
- up->uart_dma.rx_buf_size, 1,
- OMAP_DMA_SYNC_ELEMENT,
- up->uart_dma.uart_dma_rx, 0);
- }
- up->uart_dma.prev_rx_dma_pos = up->uart_dma.rx_buf_dma_phys;
- /* FIXME: Cache maintenance needed here? */
- omap_start_dma(up->uart_dma.rx_dma_channel);
- mod_timer(&up->uart_dma.rx_timer, jiffies +
- usecs_to_jiffies(up->uart_dma.rx_poll_rate));
- up->uart_dma.rx_dma_used = true;
- return ret;
- }
-
- static void serial_omap_continue_tx(struct uart_omap_port *up)
- {
- struct circ_buf *xmit = &up->port.state->xmit;
- unsigned int start = up->uart_dma.tx_buf_dma_phys
- + (xmit->tail & (UART_XMIT_SIZE - 1));
-
- if (uart_circ_empty(xmit))
- return;
-
- up->uart_dma.tx_buf_size = uart_circ_chars_pending(xmit);
- /*
- * It is a circular buffer. See if the buffer has wounded back.
- * If yes it will have to be transferred in two separate dma
- * transfers
- */
- if (start + up->uart_dma.tx_buf_size >=
- up->uart_dma.tx_buf_dma_phys + UART_XMIT_SIZE)
- up->uart_dma.tx_buf_size =
- (up->uart_dma.tx_buf_dma_phys + UART_XMIT_SIZE) - start;
- omap_set_dma_dest_params(up->uart_dma.tx_dma_channel, 0,
- OMAP_DMA_AMODE_CONSTANT,
- up->uart_dma.uart_base, 0, 0);
- omap_set_dma_src_params(up->uart_dma.tx_dma_channel, 0,
- OMAP_DMA_AMODE_POST_INC, start, 0, 0);
- omap_set_dma_transfer_params(up->uart_dma.tx_dma_channel,
- OMAP_DMA_DATA_TYPE_S8,
- up->uart_dma.tx_buf_size, 1,
- OMAP_DMA_SYNC_ELEMENT,
- up->uart_dma.uart_dma_tx, 0);
- /* FIXME: Cache maintenance needed here? */
- omap_start_dma(up->uart_dma.tx_dma_channel);
- }
-
- static void uart_tx_dma_callback(int lch, u16 ch_status, void *data)
- {
- struct uart_omap_port *up = (struct uart_omap_port *)data;
- struct circ_buf *xmit = &up->port.state->xmit;
-
- xmit->tail = (xmit->tail + up->uart_dma.tx_buf_size) & \
- (UART_XMIT_SIZE - 1);
- up->port.icount.tx += up->uart_dma.tx_buf_size;
-
- if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
- uart_write_wakeup(&up->port);
-
- if (uart_circ_empty(xmit)) {
- spin_lock(&(up->uart_dma.tx_lock));
- serial_omap_stop_tx(&up->port);
- up->uart_dma.tx_dma_used = false;
- spin_unlock(&(up->uart_dma.tx_lock));
- } else {
- omap_stop_dma(up->uart_dma.tx_dma_channel);
- serial_omap_continue_tx(up);
- }
- up->port_activity = jiffies;
- return;
- }
-
- static void omap_serial_fill_features_erratas(struct uart_omap_port *up)
+ static void __devinit omap_serial_fill_features_erratas(struct uart_omap_port *up)
{
u32 mvr, scheme;
u16 revision, major, minor;
minor = (mvr & OMAP_UART_MVR_MIN_MASK);
break;
default:
- dev_warn(&up->pdev->dev,
+ dev_warn(up->dev,
"Unknown %s revision, defaulting to highest\n",
up->name);
/* highest possible revision */
}
}
- static struct omap_uart_port_info *of_get_uart_port_info(struct device *dev)
+ static __devinit struct omap_uart_port_info *of_get_uart_port_info(struct device *dev)
{
struct omap_uart_port_info *omap_up_info;
return omap_up_info;
}
- static int serial_omap_probe(struct platform_device *pdev)
+ static int __devinit serial_omap_probe(struct platform_device *pdev)
{
struct uart_omap_port *up;
- struct resource *mem, *irq, *dma_tx, *dma_rx;
+ struct resource *mem, *irq;
struct omap_uart_port_info *omap_up_info = pdev->dev.platform_data;
- int ret = -ENOSPC;
+ int ret;
if (pdev->dev.of_node)
omap_up_info = of_get_uart_port_info(&pdev->dev);
return -EBUSY;
}
- dma_rx = platform_get_resource_byname(pdev, IORESOURCE_DMA, "rx");
- if (!dma_rx)
- return -ENXIO;
-
- dma_tx = platform_get_resource_byname(pdev, IORESOURCE_DMA, "tx");
- if (!dma_tx)
- return -ENXIO;
+ if (gpio_is_valid(omap_up_info->DTR_gpio) &&
+ omap_up_info->DTR_present) {
+ ret = gpio_request(omap_up_info->DTR_gpio, "omap-serial");
+ if (ret < 0)
+ return ret;
+ ret = gpio_direction_output(omap_up_info->DTR_gpio,
+ omap_up_info->DTR_inverted);
+ if (ret < 0)
+ return ret;
+ }
up = devm_kzalloc(&pdev->dev, sizeof(*up), GFP_KERNEL);
if (!up)
return -ENOMEM;
- up->pdev = pdev;
+ if (gpio_is_valid(omap_up_info->DTR_gpio) &&
+ omap_up_info->DTR_present) {
+ up->DTR_gpio = omap_up_info->DTR_gpio;
+ up->DTR_inverted = omap_up_info->DTR_inverted;
+ } else
+ up->DTR_gpio = -EINVAL;
+ up->DTR_active = 0;
+
+ up->dev = &pdev->dev;
up->port.dev = &pdev->dev;
up->port.type = PORT_OMAP;
up->port.iotype = UPIO_MEM;
goto err_port_line;
}
+ up->pins = devm_pinctrl_get_select_default(&pdev->dev);
+ if (IS_ERR(up->pins)) {
+ dev_warn(&pdev->dev, "did not get pins for uart%i error: %li\n",
+ up->port.line, PTR_ERR(up->pins));
+ up->pins = NULL;
+ }
+
sprintf(up->name, "OMAP UART%d", up->port.line);
up->port.mapbase = mem->start;
up->port.membase = devm_ioremap(&pdev->dev, mem->start,
dev_warn(&pdev->dev, "No clock speed specified: using default:"
"%d\n", DEFAULT_CLK_SPEED);
}
- up->uart_dma.uart_base = mem->start;
-
- if (omap_up_info->dma_enabled) {
- up->uart_dma.uart_dma_tx = dma_tx->start;
- up->uart_dma.uart_dma_rx = dma_rx->start;
- up->use_dma = 1;
- up->uart_dma.rx_buf_size = omap_up_info->dma_rx_buf_size;
- up->uart_dma.rx_timeout = omap_up_info->dma_rx_timeout;
- up->uart_dma.rx_poll_rate = omap_up_info->dma_rx_poll_rate;
- spin_lock_init(&(up->uart_dma.tx_lock));
- spin_lock_init(&(up->uart_dma.rx_lock));
- up->uart_dma.tx_dma_channel = OMAP_UART_DMA_CH_FREE;
- up->uart_dma.rx_dma_channel = OMAP_UART_DMA_CH_FREE;
- }
up->latency = PM_QOS_CPU_DMA_LAT_DEFAULT_VALUE;
up->calc_latency = PM_QOS_CPU_DMA_LAT_DEFAULT_VALUE;
serial_omap_uart_wq = create_singlethread_workqueue(up->name);
INIT_WORK(&up->qos_work, serial_omap_uart_qos_work);
+ platform_set_drvdata(pdev, up);
+ pm_runtime_enable(&pdev->dev);
pm_runtime_use_autosuspend(&pdev->dev);
pm_runtime_set_autosuspend_delay(&pdev->dev,
omap_up_info->autosuspend_timeout);
pm_runtime_irq_safe(&pdev->dev);
- pm_runtime_enable(&pdev->dev);
pm_runtime_get_sync(&pdev->dev);
omap_serial_fill_features_erratas(up);
if (ret != 0)
goto err_add_port;
- pm_runtime_put(&pdev->dev);
- platform_set_drvdata(pdev, up);
+ pm_runtime_mark_last_busy(up->dev);
+ pm_runtime_put_autosuspend(up->dev);
return 0;
err_add_port:
return ret;
}
- static int serial_omap_remove(struct platform_device *dev)
+ static int __devexit serial_omap_remove(struct platform_device *dev)
{
struct uart_omap_port *up = platform_get_drvdata(dev);
- if (up) {
- pm_runtime_disable(&up->pdev->dev);
- uart_remove_one_port(&serial_omap_reg, &up->port);
- pm_qos_remove_request(&up->pm_qos_request);
- }
+ pm_runtime_put_sync(up->dev);
+ pm_runtime_disable(up->dev);
+ uart_remove_one_port(&serial_omap_reg, &up->port);
+ pm_qos_remove_request(&up->pm_qos_request);
- platform_set_drvdata(dev, NULL);
return 0;
}
timeout--;
if (!timeout) {
/* Should *never* happen. we warn and carry on */
- dev_crit(&up->pdev->dev, "Errata i202: timedout %x\n",
+ dev_crit(up->dev, "Errata i202: timedout %x\n",
serial_in(up, UART_LSR));
break;
}
if (!up)
return -EINVAL;
- if (!pdata || !pdata->enable_wakeup)
+ if (!pdata)
return 0;
- if (pdata->get_context_loss_count)
- up->context_loss_cnt = pdata->get_context_loss_count(dev);
+ up->context_loss_cnt = serial_omap_get_context_loss_count(up);
if (device_may_wakeup(dev)) {
if (!up->wakeups_enabled) {
- pdata->enable_wakeup(up->pdev, true);
+ serial_omap_enable_wakeup(up, true);
up->wakeups_enabled = true;
}
} else {
if (up->wakeups_enabled) {
- pdata->enable_wakeup(up->pdev, false);
+ serial_omap_enable_wakeup(up, false);
up->wakeups_enabled = false;
}
}
- /* Errata i291 */
- if (up->use_dma && pdata->set_forceidle &&
- (up->errata & UART_ERRATA_i291_DMA_FORCEIDLE))
- pdata->set_forceidle(up->pdev);
-
up->latency = PM_QOS_CPU_DMA_LAT_DEFAULT_VALUE;
schedule_work(&up->qos_work);
struct omap_uart_port_info *pdata = dev->platform_data;
if (up && pdata) {
- if (pdata->get_context_loss_count) {
- u32 loss_cnt = pdata->get_context_loss_count(dev);
+ u32 loss_cnt = serial_omap_get_context_loss_count(up);
if (up->context_loss_cnt != loss_cnt)
serial_omap_restore_context(up);
- }
-
- /* Errata i291 */
- if (up->use_dma && pdata->set_noidle &&
- (up->errata & UART_ERRATA_i291_DMA_FORCEIDLE))
- pdata->set_noidle(up->pdev);
up->latency = up->calc_latency;
schedule_work(&up->qos_work);
static struct platform_driver serial_omap_driver = {
.probe = serial_omap_probe,
- .remove = serial_omap_remove,
+ .remove = __devexit_p(serial_omap_remove),
.driver = {
.name = DRIVER_NAME,
.pm = &serial_omap_dev_pm_ops,
projects / karo-tx-linux.git / commitdiff