- amlogic,meson8b-uart
- amlogic,meson-gx-uart
- amlogic,meson-s4-uart
+ - amlogic,meson-a1-uart
- const: amlogic,meson-ao-uart
- description: Always-on power domain UART controller on G12A SoCs
items:
- amlogic,meson8b-uart
- amlogic,meson-gx-uart
- amlogic,meson-s4-uart
+ - amlogic,meson-a1-uart
- description: Everything-Else power domain UART controller on G12A SoCs
items:
- const: amlogic,meson-g12a-uart
- fsl,imxrt1050-lpuart
- items:
- enum:
- - fsl,imx93-lpuart
- fsl,imx8ulp-lpuart
- const: fsl,imx7ulp-lpuart
- items:
- enum:
+ - fsl,imx93-lpuart
+ - const: fsl,imx8ulp-lpuart
+ - const: fsl,imx7ulp-lpuart
+ - items:
+ - enum:
- fsl,imx8qm-lpuart
- fsl,imx8dxl-lpuart
- const: fsl,imx8qxp-lpuart
arch_initcall(register_cpus);
#ifdef CONFIG_MAGIC_SYSRQ
-static void sysrq_reboot_handler(int unused)
+static void sysrq_reboot_handler(u8 unused)
{
machine_halt();
}
};
uart_AO: serial@1c00 {
- compatible = "amlogic,meson-gx-uart",
+ compatible = "amlogic,meson-a1-uart",
"amlogic,meson-ao-uart";
reg = <0x0 0x1c00 0x0 0x18>;
interrupts = <GIC_SPI 25 IRQ_TYPE_EDGE_RISING>;
};
uart_AO_B: serial@2000 {
- compatible = "amlogic,meson-gx-uart",
+ compatible = "amlogic,meson-a1-uart",
"amlogic,meson-ao-uart";
reg = <0x0 0x2000 0x0 0x18>;
interrupts = <GIC_SPI 26 IRQ_TYPE_EDGE_RISING>;
static DECLARE_WORK(sysrq_tlbdump, sysrq_tlbdump_othercpus);
#endif
-static void sysrq_handle_tlbdump(int key)
+static void sysrq_handle_tlbdump(u8 key)
{
sysrq_tlbdump_single(NULL);
#ifdef CONFIG_SMP
static DECLARE_WORK(sysrq_tlbdump, sysrq_tlbdump_othercpus);
#endif
-static void sysrq_handle_tlbdump(int key)
+static void sysrq_handle_tlbdump(u8 key)
{
sysrq_tlbdump_single(NULL);
#ifdef CONFIG_SMP
}
#ifdef CONFIG_MAGIC_SYSRQ
-static void sysrq_handle_xmon(int key)
+static void sysrq_handle_xmon(u8 key)
{
if (xmon_is_locked_down()) {
clear_all_bpt();
#ifdef CONFIG_MAGIC_SYSRQ
-static void sysrq_handle_globreg(int key)
+static void sysrq_handle_globreg(u8 key)
{
trigger_all_cpu_backtrace();
}
spin_unlock_irqrestore(&global_cpu_snapshot_lock, flags);
}
-static void sysrq_handle_globpmu(int key)
+static void sysrq_handle_globpmu(u8 key)
{
pmu_snapshot_all_cpus();
}
static DECLARE_WORK(drm_fb_helper_restore_work, drm_fb_helper_restore_work_fn);
-static void drm_fb_helper_sysrq(int dummy1)
+static void drm_fb_helper_sysrq(u8 dummy1)
{
schedule_work(&drm_fb_helper_restore_work);
}
#define EMS_PCI_BASE_SIZE 4096 /* size of controller area */
-#ifndef PCI_VENDOR_ID_ASIX
-#define PCI_VENDOR_ID_ASIX 0x125b
-#define PCI_DEVICE_ID_ASIX_9110 0x9110
-#define PCI_SUBVENDOR_ID_ASIX 0xa000
-#endif
#define PCI_SUBDEVICE_ID_EMS 0x4010
static const struct pci_device_id ems_pci_tbl[] = {
/* CPC-104P v2 */
{PCI_VENDOR_ID_PLX, PCI_DEVICE_ID_PLX_9030, PCI_VENDOR_ID_PLX, 0x4002},
/* CPC-PCIe v3 */
- {PCI_VENDOR_ID_ASIX, PCI_DEVICE_ID_ASIX_9110, PCI_SUBVENDOR_ID_ASIX, PCI_SUBDEVICE_ID_EMS},
+ {PCI_VENDOR_ID_ASIX, PCI_DEVICE_ID_ASIX_AX99100_LB, 0xa000, PCI_SUBDEVICE_ID_EMS},
{0,}
};
MODULE_DEVICE_TABLE(pci, ems_pci_tbl);
netmos_9815,
netmos_9901,
netmos_9865,
+ asix_ax99100,
quatech_sppxp100,
wch_ch382l,
};
/* netmos_9815 */ { 2, { { 0, 1 }, { 2, 3 }, } },
/* netmos_9901 */ { 1, { { 0, -1 }, } },
/* netmos_9865 */ { 1, { { 0, -1 }, } },
+ /* asix_ax99100 */ { 1, { { 0, 1 }, } },
/* quatech_sppxp100 */ { 1, { { 0, 1 }, } },
/* wch_ch382l */ { 1, { { 2, -1 }, } },
};
0xA000, 0x1000, 0, 0, netmos_9865 },
{ PCI_VENDOR_ID_NETMOS, PCI_DEVICE_ID_NETMOS_9865,
0xA000, 0x2000, 0, 0, netmos_9865 },
+ /* ASIX AX99100 PCIe to Multi I/O Controller */
+ { PCI_VENDOR_ID_ASIX, PCI_DEVICE_ID_ASIX_AX99100,
+ 0xA000, 0x2000, 0, 0, asix_ax99100 },
/* Quatech SPPXP-100 Parallel port PCI ExpressCard */
{ PCI_VENDOR_ID_QUATECH, PCI_DEVICE_ID_QUATECH_SPPXP_100,
PCI_ANY_ID, PCI_ANY_ID, 0, 0, quatech_sppxp100 },
#include <linux/console.h>
#include <linux/of.h>
#include <linux/of_irq.h>
-#include <linux/of_platform.h>
+#include <linux/platform_device.h>
#include <linux/export.h>
#include <linux/interrupt.h>
}
/* If we are not echoing the data, perhaps this is a secret so erase it */
-static void zero_buffer(struct tty_struct *tty, u8 *buffer, int size)
+static void zero_buffer(const struct tty_struct *tty, u8 *buffer, size_t size)
{
- bool icanon = !!L_ICANON(tty);
- bool no_echo = !L_ECHO(tty);
-
- if (icanon && no_echo)
- memset(buffer, 0x00, size);
+ if (L_ICANON(tty) && !L_ECHO(tty))
+ memset(buffer, 0, size);
}
-static void tty_copy(struct tty_struct *tty, void *to, size_t tail, size_t n)
+static void tty_copy(const struct tty_struct *tty, void *to, size_t tail,
+ size_t n)
{
struct n_tty_data *ldata = tty->disc_data;
size_t size = N_TTY_BUF_SIZE - tail;
* * n_tty_read()/consumer path:
* holds non-exclusive %termios_rwsem
*/
-static void n_tty_kick_worker(struct tty_struct *tty)
+static void n_tty_kick_worker(const struct tty_struct *tty)
{
struct n_tty_data *ldata = tty->disc_data;
}
}
-static ssize_t chars_in_buffer(struct tty_struct *tty)
+static ssize_t chars_in_buffer(const struct tty_struct *tty)
{
- struct n_tty_data *ldata = tty->disc_data;
+ const struct n_tty_data *ldata = tty->disc_data;
ssize_t n = 0;
if (!ldata->icanon)
* Returns: true if the utf8 character @c is a multibyte continuation character
* and the terminal is in unicode mode.
*/
-static inline int is_continuation(unsigned char c, struct tty_struct *tty)
+static inline int is_continuation(unsigned char c, const struct tty_struct *tty)
{
return I_IUTF8(tty) && is_utf8_continuation(c);
}
* This variant tags control characters to be echoed as "^X" (where X is the
* letter representing the control char).
*/
-static void echo_char(unsigned char c, struct tty_struct *tty)
+static void echo_char(unsigned char c, const struct tty_struct *tty)
{
struct n_tty_data *ldata = tty->disc_data;
* Locking: n_tty_receive_buf()/producer path:
* caller holds non-exclusive %termios_rwsem
*/
-static void eraser(unsigned char c, struct tty_struct *tty)
+static void eraser(unsigned char c, const struct tty_struct *tty)
{
struct n_tty_data *ldata = tty->disc_data;
enum { ERASE, WERASE, KILL } kill_type;
* Called from the receive_buf path so single threaded. Does not need locking
* as num_overrun and overrun_time are function private.
*/
-static void n_tty_receive_overrun(struct tty_struct *tty)
+static void n_tty_receive_overrun(const struct tty_struct *tty)
{
struct n_tty_data *ldata = tty->disc_data;
* Locking: n_tty_receive_buf()/producer path:
* caller holds non-exclusive %termios_rwsem
*/
-static void n_tty_receive_parity_error(struct tty_struct *tty, unsigned char c)
+static void n_tty_receive_parity_error(const struct tty_struct *tty,
+ unsigned char c)
{
struct n_tty_data *ldata = tty->disc_data;
}
static void
-n_tty_receive_buf_real_raw(struct tty_struct *tty, const unsigned char *cp,
- const char *fp, int count)
+n_tty_receive_buf_real_raw(const struct tty_struct *tty,
+ const unsigned char *cp, int count)
{
struct n_tty_data *ldata = tty->disc_data;
size_t n, head;
size_t la_count = min_t(size_t, ldata->lookahead_count, count);
if (ldata->real_raw)
- n_tty_receive_buf_real_raw(tty, cp, fp, count);
+ n_tty_receive_buf_real_raw(tty, cp, count);
else if (ldata->raw || (L_EXTPROC(tty) && !preops))
n_tty_receive_buf_raw(tty, cp, fp, count);
else if (tty->closing && !L_EXTPROC(tty)) {
return 0;
}
-static inline int input_available_p(struct tty_struct *tty, int poll)
+static inline int input_available_p(const struct tty_struct *tty, int poll)
{
- struct n_tty_data *ldata = tty->disc_data;
+ const struct n_tty_data *ldata = tty->disc_data;
int amt = poll && !TIME_CHAR(tty) && MIN_CHAR(tty) ? MIN_CHAR(tty) : 1;
if (ldata->icanon && !L_EXTPROC(tty))
* caller holds non-exclusive %termios_rwsem;
* read_tail published
*/
-static bool copy_from_read_buf(struct tty_struct *tty,
+static bool copy_from_read_buf(const struct tty_struct *tty,
unsigned char **kbp,
size_t *nr)
* caller holds non-exclusive %termios_rwsem;
* read_tail published
*/
-static bool canon_copy_from_read_buf(struct tty_struct *tty,
+static bool canon_copy_from_read_buf(const struct tty_struct *tty,
unsigned char **kbp,
size_t *nr)
{
* EOF (special EOL character that's a __DISABLED_CHAR)
* in the stream, silently eat the EOF.
*/
-static void canon_skip_eof(struct tty_struct *tty)
+static void canon_skip_eof(struct n_tty_data *ldata)
{
- struct n_tty_data *ldata = tty->disc_data;
size_t tail, canon_head;
canon_head = smp_load_acquire(&ldata->canon_head);
* releasing the lock and returning done.
*/
if (!nr)
- canon_skip_eof(tty);
+ canon_skip_eof(ldata);
else if (canon_copy_from_read_buf(tty, &kb, &nr))
return kb - kbuf;
} else {
static irqreturn_t serial21285_rx_chars(int irq, void *dev_id)
{
struct uart_port *port = dev_id;
- unsigned int status, ch, flag, rxs, max_count = 256;
+ unsigned int status, rxs, max_count = 256;
+ u8 ch, flag;
status = *CSR_UARTFLG;
while (!(status & 0x10) && max_count--) {
#include <linux/init.h>
#include <linux/console.h>
#include <linux/of.h>
-#include <linux/of_device.h>
#include <linux/serial_reg.h>
#include <linux/serial.h>
#include <linux/serial_8250.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/of_fdt.h>
-#include <linux/of_device.h>
#include <linux/platform_device.h>
#include <linux/serial_8250.h>
#include <linux/serial_core.h>
#define MEN_UART_ID_Z057 0x39
#define MEN_UART_ID_Z125 0x7d
-#define MEN_UART_MEM_SIZE 0x10
+/*
+ * IP Cores Z025 and Z057 can have up to 4 UART
+ * The UARTs available are stored in a global
+ * register saved in physical address + 0x40
+ * Is saved as follows:
+ *
+ * 7 0
+ * +------+-------+-------+-------+-------+-------+-------+-------+
+ * |UART4 | UART3 | UART2 | UART1 | U4irq | U3irq | U2irq | U1irq |
+ * +------+-------+-------+-------+-------+-------+-------+-------+
+ */
+#define MEN_UART1_MASK 0x01
+#define MEN_UART2_MASK 0x02
+#define MEN_UART3_MASK 0x04
+#define MEN_UART4_MASK 0x08
+
+#define MEN_Z125_UARTS_AVAILABLE 0x01
+
+#define MEN_Z025_MAX_UARTS 4
+#define MEN_UART_MEM_SIZE 0x10
+#define MEM_UART_REGISTER_SIZE 0x01
+#define MEN_Z025_REGISTER_OFFSET 0x40
+
+#define MEN_UART1_OFFSET 0
+#define MEN_UART2_OFFSET (MEN_UART1_OFFSET + MEN_UART_MEM_SIZE)
+#define MEN_UART3_OFFSET (MEN_UART2_OFFSET + MEN_UART_MEM_SIZE)
+#define MEN_UART4_OFFSET (MEN_UART3_OFFSET + MEN_UART_MEM_SIZE)
+
+#define MEN_READ_REGISTER(addr) readb((void *)addr)
+
+#define MAX_PORTS 4
struct serial_8250_men_mcb_data {
- struct uart_8250_port uart;
- int line;
+ int num_ports;
+ unsigned int line[MAX_PORTS];
+ unsigned int offset[MAX_PORTS];
};
/*
clkval = 1041666;
else if (strncmp(mdev->bus->name, "F216", 4) == 0)
clkval = 1843200;
- else if (strncmp(mdev->bus->name, "G215", 4) == 0)
- clkval = 1843200;
else if (strncmp(mdev->bus->name, "F210", 4) == 0)
clkval = 115200;
+ else if (strstr(mdev->bus->name, "215"))
+ clkval = 1843200;
else
dev_info(&mdev->dev,
"board not detected, using default uartclk\n");
return clkval;
}
-static int get_num_ports(struct mcb_device *mdev,
- void __iomem *membase)
+static int read_uarts_available_from_register(struct resource *mem_res,
+ u8 *uarts_available)
+{
+ void __iomem *mem;
+ int reg_value;
+
+ if (!request_mem_region(mem_res->start + MEN_Z025_REGISTER_OFFSET,
+ MEM_UART_REGISTER_SIZE, KBUILD_MODNAME)) {
+ return -EBUSY;
+ }
+
+ mem = ioremap(mem_res->start + MEN_Z025_REGISTER_OFFSET,
+ MEM_UART_REGISTER_SIZE);
+ if (!mem) {
+ release_mem_region(mem_res->start + MEN_Z025_REGISTER_OFFSET,
+ MEM_UART_REGISTER_SIZE);
+ return -ENOMEM;
+ }
+
+ reg_value = MEN_READ_REGISTER(mem);
+
+ iounmap(mem);
+
+ release_mem_region(mem_res->start + MEN_Z025_REGISTER_OFFSET,
+ MEM_UART_REGISTER_SIZE);
+
+ *uarts_available = reg_value >> 4;
+
+ return 0;
+}
+
+static int read_serial_data(struct mcb_device *mdev,
+ struct resource *mem_res,
+ struct serial_8250_men_mcb_data *serial_data)
+{
+ u8 uarts_available;
+ int count = 0;
+ int mask;
+ int res;
+ int i;
+
+ res = read_uarts_available_from_register(mem_res, &uarts_available);
+ if (res < 0)
+ return res;
+
+ for (i = 0; i < MAX_PORTS; i++) {
+ mask = 0x1 << i;
+ switch (uarts_available & mask) {
+ case MEN_UART1_MASK:
+ serial_data->offset[count] = MEN_UART1_OFFSET;
+ count++;
+ break;
+ case MEN_UART2_MASK:
+ serial_data->offset[count] = MEN_UART2_OFFSET;
+ count++;
+ break;
+ case MEN_UART3_MASK:
+ serial_data->offset[count] = MEN_UART3_OFFSET;
+ count++;
+ break;
+ case MEN_UART4_MASK:
+ serial_data->offset[count] = MEN_UART4_OFFSET;
+ count++;
+ break;
+ default:
+ return -EINVAL;
+ }
+ }
+
+ if (count <= 0 || count > MAX_PORTS) {
+ dev_err(&mdev->dev, "unexpected number of ports: %u\n",
+ count);
+ return -ENODEV;
+ }
+
+ serial_data->num_ports = count;
+
+ return 0;
+}
+
+static int init_serial_data(struct mcb_device *mdev,
+ struct resource *mem_res,
+ struct serial_8250_men_mcb_data *serial_data)
{
switch (mdev->id) {
case MEN_UART_ID_Z125:
- return 1U;
+ serial_data->num_ports = 1;
+ serial_data->offset[0] = 0;
+ return 0;
case MEN_UART_ID_Z025:
- return readb(membase) >> 4;
case MEN_UART_ID_Z057:
- return 4U;
+ return read_serial_data(mdev, mem_res, serial_data);
default:
dev_err(&mdev->dev, "no supported device!\n");
return -ENODEV;
static int serial_8250_men_mcb_probe(struct mcb_device *mdev,
const struct mcb_device_id *id)
{
+ struct uart_8250_port uart;
struct serial_8250_men_mcb_data *data;
struct resource *mem;
- int num_ports;
int i;
- void __iomem *membase;
+ int res;
mem = mcb_get_resource(mdev, IORESOURCE_MEM);
if (mem == NULL)
return -ENXIO;
- membase = devm_ioremap_resource(&mdev->dev, mem);
- if (IS_ERR(membase))
- return PTR_ERR_OR_ZERO(membase);
-
- num_ports = get_num_ports(mdev, membase);
- dev_dbg(&mdev->dev, "found a 16z%03u with %u ports\n",
- mdev->id, num_ports);
-
- if (num_ports <= 0 || num_ports > 4) {
- dev_err(&mdev->dev, "unexpected number of ports: %u\n",
- num_ports);
- return -ENODEV;
- }
-
- data = devm_kcalloc(&mdev->dev, num_ports,
+ data = devm_kzalloc(&mdev->dev,
sizeof(struct serial_8250_men_mcb_data),
GFP_KERNEL);
if (!data)
return -ENOMEM;
+ res = init_serial_data(mdev, mem, data);
+ if (res < 0)
+ return res;
+
+ dev_dbg(&mdev->dev, "found a 16z%03u with %u ports\n",
+ mdev->id, data->num_ports);
+
mcb_set_drvdata(mdev, data);
- for (i = 0; i < num_ports; i++) {
- data[i].uart.port.dev = mdev->dma_dev;
- spin_lock_init(&data[i].uart.port.lock);
-
- data[i].uart.port.type = PORT_16550;
- data[i].uart.port.flags = UPF_SKIP_TEST | UPF_SHARE_IRQ
- | UPF_FIXED_TYPE;
- data[i].uart.port.iotype = UPIO_MEM;
- data[i].uart.port.uartclk = men_lookup_uartclk(mdev);
- data[i].uart.port.regshift = 0;
- data[i].uart.port.irq = mcb_get_irq(mdev);
- data[i].uart.port.membase = membase;
- data[i].uart.port.fifosize = 60;
- data[i].uart.port.mapbase = (unsigned long) mem->start
- + i * MEN_UART_MEM_SIZE;
- data[i].uart.port.iobase = data[i].uart.port.mapbase;
+ for (i = 0; i < data->num_ports; i++) {
+ memset(&uart, 0, sizeof(struct uart_8250_port));
+ spin_lock_init(&uart.port.lock);
+
+ uart.port.flags = UPF_SKIP_TEST |
+ UPF_SHARE_IRQ |
+ UPF_BOOT_AUTOCONF |
+ UPF_IOREMAP;
+ uart.port.iotype = UPIO_MEM;
+ uart.port.uartclk = men_lookup_uartclk(mdev);
+ uart.port.irq = mcb_get_irq(mdev);
+ uart.port.mapbase = (unsigned long) mem->start
+ + data->offset[i];
/* ok, register the port */
- data[i].line = serial8250_register_8250_port(&data[i].uart);
- if (data[i].line < 0) {
+ data->line[i] = serial8250_register_8250_port(&uart);
+ if (data->line[i] < 0) {
dev_err(&mdev->dev, "unable to register UART port\n");
- return data[i].line;
+ return data->line[i];
}
- dev_info(&mdev->dev, "found MCB UART: ttyS%d\n", data[i].line);
+ dev_info(&mdev->dev, "found MCB UART: ttyS%d\n", data->line[i]);
}
return 0;
static void serial_8250_men_mcb_remove(struct mcb_device *mdev)
{
- int num_ports, i;
+ int i;
struct serial_8250_men_mcb_data *data = mcb_get_drvdata(mdev);
if (!data)
return;
- num_ports = get_num_ports(mdev, data[0].uart.port.membase);
- if (num_ports <= 0 || num_ports > 4) {
- dev_err(&mdev->dev, "error retrieving number of ports!\n");
- return;
- }
-
- for (i = 0; i < num_ports; i++)
- serial8250_unregister_port(data[i].line);
+ for (i = 0; i < data->num_ports; i++)
+ serial8250_unregister_port(data->line[i]);
}
static const struct mcb_device_id serial_8250_men_mcb_ids[] = {
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <linux/of.h>
-#include <linux/of_device.h>
#include <linux/of_gpio.h>
#include <linux/of_irq.h>
#include <linux/delay.h>
0xA000, 0x1000) },
{ PCI_DEVICE_SUB(PCI_VENDOR_ID_NETMOS, PCI_DEVICE_ID_NETMOS_9922,
0xA000, 0x1000) },
+ { PCI_DEVICE_SUB(PCI_VENDOR_ID_ASIX, PCI_DEVICE_ID_ASIX_AX99100,
+ 0xA000, 0x1000) },
{ PCI_DEVICE_SUB(PCI_VENDOR_ID_HP_3PAR, PCI_DEVICE_ID_HPE_PCI_SERIAL,
PCI_ANY_ID, PCI_ANY_ID) },
{ }
{ PCI_VENDOR_ID_NETMOS, PCI_DEVICE_ID_NETMOS_9865,
0xA000, 0x3004,
0, 0, pbn_b0_bt_4_115200 },
+
+ /*
+ * ASIX AX99100 PCIe to Multi I/O Controller
+ */
+ { PCI_VENDOR_ID_ASIX, PCI_DEVICE_ID_ASIX_AX99100,
+ 0xA000, 0x1000,
+ 0, 0, pbn_b0_1_115200 },
+
/* Intel CE4100 */
{ PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_CE4100_UART,
PCI_ANY_ID, PCI_ANY_ID, 0, 0,
void serial8250_read_char(struct uart_8250_port *up, u16 lsr)
{
struct uart_port *port = &up->port;
- unsigned char ch;
- char flag = TTY_NORMAL;
+ u8 ch, flag = TTY_NORMAL;
if (likely(lsr & UART_LSR_DR))
ch = serial_in(up, UART_RX);
return early_serial8250_setup(device, NULL);
}
OF_EARLYCON_DECLARE(early_pxa, "mrvl,pxa-uart", early_serial_pxa_setup);
+OF_EARLYCON_DECLARE(mmp, "mrvl,mmp-uart", early_serial_pxa_setup);
#endif
MODULE_AUTHOR("Sergei Ianovich");
static void altera_jtaguart_rx_chars(struct uart_port *port)
{
- unsigned char ch;
unsigned long status;
+ u8 ch;
while ((status = readl(port->membase + ALTERA_JTAGUART_DATA_REG)) &
ALTERA_JTAGUART_DATA_RVALID_MSK) {
static void altera_uart_rx_chars(struct uart_port *port)
{
- unsigned char ch, flag;
unsigned short status;
+ u8 ch, flag;
while ((status = altera_uart_readl(port, ALTERA_UART_STATUS_REG)) &
ALTERA_UART_STATUS_RRDY_MSK) {
static void pl010_rx_chars(struct uart_port *port)
{
- unsigned int status, ch, flag, rsr, max_count = 256;
+ unsigned int status, rsr, max_count = 256;
+ u8 ch, flag;
status = readb(port->membase + UART01x_FR);
while (UART_RX_DATA(status) && max_count--) {
#include <linux/ioport.h>
#include <linux/init.h>
#include <linux/console.h>
+#include <linux/platform_device.h>
#include <linux/sysrq.h>
#include <linux/device.h>
#include <linux/tty.h>
#include <linux/delay.h>
#include <linux/types.h>
#include <linux/of.h>
-#include <linux/of_device.h>
#include <linux/pinctrl/consumer.h>
#include <linux/sizes.h>
#include <linux/io.h>
*/
static int pl011_fifo_to_tty(struct uart_amba_port *uap)
{
- unsigned int ch, flag, fifotaken;
+ unsigned int ch, fifotaken;
int sysrq;
u16 status;
+ u8 flag;
for (fifotaken = 0; fifotaken != 256; fifotaken++) {
status = pl011_read(uap, REG_FR);
#include <linux/kthread.h>
#include <linux/device.h>
#include <linux/of.h>
-#include <linux/of_device.h>
-#include <linux/of_platform.h>
-#include <linux/of_irq.h>
#include <linux/platform_device.h>
#include <linux/io.h>
#include <linux/serial_core.h>
static void apbuart_rx_chars(struct uart_port *port)
{
- unsigned int status, ch, rsr, flag;
+ unsigned int status, rsr;
unsigned int max_chars = port->fifosize;
+ u8 ch, flag;
status = UART_GET_STATUS(port);
port = &up->port;
- mem_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- port->membase = devm_ioremap_resource(&pdev->dev, mem_res);
+ port->membase = devm_platform_get_and_ioremap_resource(pdev, 0, &mem_res);
if (IS_ERR(port->membase))
return PTR_ERR(port->membase);
static void arc_serial_rx_chars(struct uart_port *port, unsigned int status)
{
- unsigned int ch, flg = 0;
-
/*
* UART has 4 deep RX-FIFO. Driver's recongnition of this fact
* is very subtle. Here's how ...
* controller, which is indeed the Rx-FIFO.
*/
do {
+ u8 ch, flg = TTY_NORMAL;
+
/*
* This could be an Rx Intr for err (no data),
* so check err and clear that Intr first
*/
- if (unlikely(status & (RXOERR | RXFERR))) {
- if (status & RXOERR) {
- port->icount.overrun++;
- flg = TTY_OVERRUN;
- UART_CLR_STATUS(port, RXOERR);
- }
-
- if (status & RXFERR) {
- port->icount.frame++;
- flg = TTY_FRAME;
- UART_CLR_STATUS(port, RXFERR);
- }
- } else
- flg = TTY_NORMAL;
+ if (status & RXOERR) {
+ port->icount.overrun++;
+ flg = TTY_OVERRUN;
+ UART_CLR_STATUS(port, RXOERR);
+ }
+
+ if (status & RXFERR) {
+ port->icount.frame++;
+ flg = TTY_FRAME;
+ UART_CLR_STATUS(port, RXFERR);
+ }
if (status & RXEMPTY)
continue;
#include <linux/tty_flip.h>
#include <linux/platform_device.h>
#include <linux/of.h>
-#include <linux/of_device.h>
#include <linux/dma-mapping.h>
#include <linux/dmaengine.h>
#include <linux/atmel_pdc.h>
{
struct atmel_uart_port *atmel_port = to_atmel_uart_port(port);
struct circ_buf *ring = &atmel_port->rx_ring;
- unsigned int flg;
unsigned int status;
+ u8 flg;
while (ring->head != ring->tail) {
struct atmel_uart_char c;
return -EBUSY;
memset(port, 0, sizeof(*port));
- res_mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!res_mem)
- return -ENODEV;
-
- port->mapbase = res_mem->start;
- port->membase = devm_ioremap_resource(&pdev->dev, res_mem);
+ port->membase = devm_platform_get_and_ioremap_resource(pdev, 0, &res_mem);
if (IS_ERR(port->membase))
return PTR_ERR(port->membase);
+ port->mapbase = res_mem->start;
ret = platform_get_irq(pdev, 0);
if (ret < 0)
{
struct uart_port *port = dev_id;
struct clps711x_port *s = dev_get_drvdata(port->dev);
- unsigned int status, flg;
+ unsigned int status;
u16 ch;
+ u8 flg;
for (;;) {
u32 sysflg = 0;
if (IS_ERR(uart_clk))
return PTR_ERR(uart_clk);
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- s->port.membase = devm_ioremap_resource(&pdev->dev, res);
+ s->port.membase = devm_platform_get_and_ioremap_resource(pdev, 0, &res);
if (IS_ERR(s->port.membase))
return PTR_ERR(s->port.membase);
spin_lock_irqsave(&port->lock, flags);
while (1) {
- u8 status, ch;
- unsigned int ch_flag;
+ u8 status, ch, ch_flag;
if (digicolor_uart_rx_empty(port))
break;
struct dz_port *dport = &mux->dport[0];
struct uart_icount *icount;
int lines_rx[DZ_NB_PORT] = { [0 ... DZ_NB_PORT - 1] = 0 };
- unsigned char ch, flag;
u16 status;
+ u8 ch, flag;
int i;
while ((status = dz_in(dport, DZ_RBUF)) & DZ_DVAL) {
#include <linux/irq.h>
#include <linux/module.h>
#include <linux/of.h>
-#include <linux/of_device.h>
+#include <linux/platform_device.h>
#include <linux/serial_core.h>
#include <linux/slab.h>
#include <linux/tty_flip.h>
sport->line = ret;
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!res)
- return -ENODEV;
-
- sport->mapbase = res->start;
- sport->membase = devm_ioremap_resource(&pdev->dev, res);
+ sport->membase = devm_platform_get_and_ioremap_resource(pdev, 0, &res);
if (IS_ERR(sport->membase))
return PTR_ERR(sport->membase);
+ sport->mapbase = res->start;
sport->dev = &pdev->dev;
sport->type = PORT_LINFLEXUART;
#include <linux/irq.h>
#include <linux/module.h>
#include <linux/of.h>
-#include <linux/of_device.h>
#include <linux/of_dma.h>
#include <linux/pinctrl/consumer.h>
+#include <linux/platform_device.h>
#include <linux/pm_runtime.h>
#include <linux/serial_core.h>
#include <linux/slab.h>
wait_queue_head_t dma_wait;
bool is_cs7; /* Set to true when character size is 7 */
/* and the parity is enabled */
+ bool dma_idle_int;
};
struct lpuart_soc_data {
return IRQ_HANDLED;
}
-static irqreturn_t lpuart32_int(int irq, void *dev_id)
-{
- struct lpuart_port *sport = dev_id;
- unsigned long sts, rxcount;
-
- sts = lpuart32_read(&sport->port, UARTSTAT);
- rxcount = lpuart32_read(&sport->port, UARTWATER);
- rxcount = rxcount >> UARTWATER_RXCNT_OFF;
-
- if ((sts & UARTSTAT_RDRF || rxcount > 0) && !sport->lpuart_dma_rx_use)
- lpuart32_rxint(sport);
-
- if ((sts & UARTSTAT_TDRE) && !sport->lpuart_dma_tx_use)
- lpuart32_txint(sport);
-
- lpuart32_write(&sport->port, sts, UARTSTAT);
- return IRQ_HANDLED;
-}
-
-
static inline void lpuart_handle_sysrq_chars(struct uart_port *port,
unsigned char *p, int count)
{
spin_unlock_irqrestore(&sport->port.lock, flags);
tty_flip_buffer_push(port);
- mod_timer(&sport->lpuart_timer, jiffies + sport->dma_rx_timeout);
+ if (!sport->dma_idle_int)
+ mod_timer(&sport->lpuart_timer, jiffies + sport->dma_rx_timeout);
}
static void lpuart_dma_rx_complete(void *arg)
lpuart_copy_rx_to_tty(sport);
}
+static void lpuart32_dma_idleint(struct lpuart_port *sport)
+{
+ enum dma_status dmastat;
+ struct dma_chan *chan = sport->dma_rx_chan;
+ struct circ_buf *ring = &sport->rx_ring;
+ struct dma_tx_state state;
+ int count = 0;
+
+ dmastat = dmaengine_tx_status(chan, sport->dma_rx_cookie, &state);
+ if (dmastat == DMA_ERROR) {
+ dev_err(sport->port.dev, "Rx DMA transfer failed!\n");
+ return;
+ }
+
+ ring->head = sport->rx_sgl.length - state.residue;
+ count = CIRC_CNT(ring->head, ring->tail, sport->rx_sgl.length);
+
+ /* Check if new data received before copying */
+ if (count)
+ lpuart_copy_rx_to_tty(sport);
+}
+
+static irqreturn_t lpuart32_int(int irq, void *dev_id)
+{
+ struct lpuart_port *sport = dev_id;
+ unsigned long sts, rxcount;
+
+ sts = lpuart32_read(&sport->port, UARTSTAT);
+ rxcount = lpuart32_read(&sport->port, UARTWATER);
+ rxcount = rxcount >> UARTWATER_RXCNT_OFF;
+
+ if ((sts & UARTSTAT_RDRF || rxcount > 0) && !sport->lpuart_dma_rx_use)
+ lpuart32_rxint(sport);
+
+ if ((sts & UARTSTAT_TDRE) && !sport->lpuart_dma_tx_use)
+ lpuart32_txint(sport);
+
+ if ((sts & UARTSTAT_IDLE) && sport->lpuart_dma_rx_use && sport->dma_idle_int)
+ lpuart32_dma_idleint(sport);
+
+ lpuart32_write(&sport->port, sts, UARTSTAT);
+ return IRQ_HANDLED;
+}
+
/*
* Timer function to simulate the hardware EOP (End Of Package) event.
* The timer callback is to check for new RX data and copy to TTY buffer.
unsigned long temp = lpuart32_read(&sport->port, UARTBAUD);
lpuart32_write(&sport->port, temp | UARTBAUD_RDMAE, UARTBAUD);
+
+ if (sport->dma_idle_int) {
+ unsigned long ctrl = lpuart32_read(&sport->port, UARTCTRL);
+
+ lpuart32_write(&sport->port, ctrl | UARTCTRL_ILIE, UARTCTRL);
+ }
} else {
writeb(readb(sport->port.membase + UARTCR5) | UARTCR5_RDMAS,
sport->port.membase + UARTCR5);
struct dma_chan *chan = sport->dma_rx_chan;
dmaengine_terminate_sync(chan);
- del_timer_sync(&sport->lpuart_timer);
+ if (!sport->dma_idle_int)
+ del_timer_sync(&sport->lpuart_timer);
+
dma_unmap_sg(chan->device->dev, &sport->rx_sgl, 1, DMA_FROM_DEVICE);
kfree(sport->rx_ring.buf);
sport->rx_ring.tail = 0;
static void rx_dma_timer_init(struct lpuart_port *sport)
{
+ if (sport->dma_idle_int)
+ return;
+
timer_setup(&sport->lpuart_timer, lpuart_timer_func, 0);
sport->lpuart_timer.expires = jiffies + sport->dma_rx_timeout;
add_timer(&sport->lpuart_timer);
if (!sport)
return -ENOMEM;
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- sport->port.membase = devm_ioremap_resource(&pdev->dev, res);
+ sport->port.membase = devm_platform_get_and_ioremap_resource(pdev, 0, &res);
if (IS_ERR(sport->port.membase))
return PTR_ERR(sport->port.membase);
sport->port.type = PORT_LPUART;
sport->devtype = sdata->devtype;
sport->rx_watermark = sdata->rx_watermark;
+ sport->dma_idle_int = is_imx7ulp_lpuart(sport) || is_imx8ulp_lpuart(sport) ||
+ is_imx8qxp_lpuart(sport);
ret = platform_get_irq(pdev, 0);
if (ret < 0)
return ret;
#include <linux/rational.h>
#include <linux/slab.h>
#include <linux/of.h>
-#include <linux/of_device.h>
#include <linux/io.h>
#include <linux/dma-mapping.h>
return -EINVAL;
}
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- base = devm_ioremap_resource(&pdev->dev, res);
+ base = devm_platform_get_and_ioremap_resource(pdev, 0, &res);
if (IS_ERR(base))
return PTR_ERR(base);
static bool ip22zilog_receive_chars(struct uart_ip22zilog_port *up,
struct zilog_channel *channel)
{
- unsigned char ch, flag;
unsigned int r1;
+ u8 ch, flag;
bool push = up->port.state != NULL;
for (;;) {
#include <linux/ioport.h>
#include <linux/lantiq.h>
#include <linux/module.h>
-#include <linux/of_platform.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
#include <linux/serial.h>
#include <linux/serial_core.h>
#include <linux/slab.h>
#include <linux/litex.h>
#include <linux/module.h>
#include <linux/of.h>
-#include <linux/of_address.h>
-#include <linux/of_platform.h>
+#include <linux/platform_device.h>
#include <linux/serial.h>
#include <linux/serial_core.h>
#include <linux/slab.h>
#include <linux/clk.h>
#include <linux/delay.h>
#include <linux/of.h>
-#include <linux/of_platform.h>
+#include <linux/platform_device.h>
#include <linux/iopoll.h>
#include <linux/serial_core.h>
#include <linux/slab.h>
static int max3100_handlerx(struct max3100_port *s, u16 rx)
{
- unsigned int ch, flg, status = 0;
+ unsigned int status = 0;
int ret = 0, cts;
+ u8 ch, flg;
if (rx & MAX3100_R && s->rx_enabled) {
dev_dbg(&s->spi->dev, "%s\n", __func__);
static void max310x_handle_rx(struct uart_port *port, unsigned int rxlen)
{
struct max310x_one *one = to_max310x_port(port);
- unsigned int sts, ch, flag, i;
+ unsigned int sts, i;
+ u8 ch, flag;
if (port->read_status_mask == MAX310X_LSR_RXOVR_BIT) {
/* We are just reading, happily ignoring any error conditions.
static void mcf_rx_chars(struct mcf_uart *pp)
{
struct uart_port *port = &pp->port;
- unsigned char status, ch, flag;
+ u8 status, ch, flag;
while ((status = readb(port->membase + MCFUART_USR)) & MCFUART_USR_RXREADY) {
ch = readb(port->membase + MCFUART_URB);
#define AML_UART_PORT_NUM 12
#define AML_UART_PORT_OFFSET 6
-#define AML_UART_DEV_NAME "ttyAML"
#define AML_UART_POLL_USEC 5
#define AML_UART_TIMEOUT_USEC 10000
-static struct uart_driver meson_uart_driver;
+static struct uart_driver meson_uart_driver_ttyAML;
+static struct uart_driver meson_uart_driver_ttyS;
static struct uart_port *meson_ports[AML_UART_PORT_NUM];
struct meson_uart_data {
+ struct uart_driver *uart_driver;
bool has_xtal_div2;
};
return uart_set_options(port, co, baud, parity, bits, flow);
}
-static struct console meson_serial_console = {
- .name = AML_UART_DEV_NAME,
- .write = meson_serial_console_write,
- .device = uart_console_device,
- .setup = meson_serial_console_setup,
- .flags = CON_PRINTBUFFER,
- .index = -1,
- .data = &meson_uart_driver,
-};
+#define MESON_SERIAL_CONSOLE(_devname) \
+ static struct console meson_serial_console_##_devname = { \
+ .name = __stringify(_devname), \
+ .write = meson_serial_console_write, \
+ .device = uart_console_device, \
+ .setup = meson_serial_console_setup, \
+ .flags = CON_PRINTBUFFER, \
+ .index = -1, \
+ .data = &meson_uart_driver_##_devname, \
+ }
-static int __init meson_serial_console_init(void)
-{
- register_console(&meson_serial_console);
- return 0;
-}
+MESON_SERIAL_CONSOLE(ttyAML);
+MESON_SERIAL_CONSOLE(ttyS);
static void meson_serial_early_console_write(struct console *co,
const char *s,
OF_EARLYCON_DECLARE(meson, "amlogic,meson-ao-uart",
meson_serial_early_console_setup);
-#define MESON_SERIAL_CONSOLE (&meson_serial_console)
+#define MESON_SERIAL_CONSOLE_PTR(_devname) (&meson_serial_console_##_devname)
#else
-static int __init meson_serial_console_init(void) {
- return 0;
-}
-#define MESON_SERIAL_CONSOLE NULL
+#define MESON_SERIAL_CONSOLE_PTR(_devname) (NULL)
#endif
-static struct uart_driver meson_uart_driver = {
- .owner = THIS_MODULE,
- .driver_name = "meson_uart",
- .dev_name = AML_UART_DEV_NAME,
- .nr = AML_UART_PORT_NUM,
- .cons = MESON_SERIAL_CONSOLE,
-};
+#define MESON_UART_DRIVER(_devname) \
+ static struct uart_driver meson_uart_driver_##_devname = { \
+ .owner = THIS_MODULE, \
+ .driver_name = "meson_uart", \
+ .dev_name = __stringify(_devname), \
+ .nr = AML_UART_PORT_NUM, \
+ .cons = MESON_SERIAL_CONSOLE_PTR(_devname), \
+ }
+
+MESON_UART_DRIVER(ttyAML);
+MESON_UART_DRIVER(ttyS);
static int meson_uart_probe_clocks(struct platform_device *pdev,
struct uart_port *port)
return 0;
}
+static struct uart_driver *meson_uart_current(const struct meson_uart_data *pd)
+{
+ return (pd && pd->uart_driver) ?
+ pd->uart_driver : &meson_uart_driver_ttyAML;
+}
+
static int meson_uart_probe(struct platform_device *pdev)
{
+ const struct meson_uart_data *priv_data;
+ struct uart_driver *uart_driver;
struct resource *res_mem;
struct uart_port *port;
u32 fifosize = 64; /* Default is 64, 128 for EE UART_0 */
of_property_read_u32(pdev->dev.of_node, "fifo-size", &fifosize);
if (meson_ports[pdev->id]) {
- dev_err(&pdev->dev, "port %d already allocated\n", pdev->id);
- return -EBUSY;
+ return dev_err_probe(&pdev->dev, -EBUSY,
+ "port %d already allocated\n", pdev->id);
}
port = devm_kzalloc(&pdev->dev, sizeof(struct uart_port), GFP_KERNEL);
if (ret)
return ret;
+ priv_data = device_get_match_data(&pdev->dev);
+
+ uart_driver = meson_uart_current(priv_data);
+
+ if (!uart_driver->state) {
+ ret = uart_register_driver(uart_driver);
+ if (ret)
+ return dev_err_probe(&pdev->dev, ret,
+ "can't register uart driver\n");
+ }
+
port->iotype = UPIO_MEM;
port->mapbase = res_mem->start;
port->mapsize = resource_size(res_mem);
port->x_char = 0;
port->ops = &meson_uart_ops;
port->fifosize = fifosize;
- port->private_data = (void *)device_get_match_data(&pdev->dev);
+ port->private_data = (void *)priv_data;
meson_ports[pdev->id] = port;
platform_set_drvdata(pdev, port);
meson_uart_release_port(port);
}
- ret = uart_add_one_port(&meson_uart_driver, port);
+ ret = uart_add_one_port(uart_driver, port);
if (ret)
meson_ports[pdev->id] = NULL;
static int meson_uart_remove(struct platform_device *pdev)
{
+ struct uart_driver *uart_driver;
struct uart_port *port;
port = platform_get_drvdata(pdev);
- uart_remove_one_port(&meson_uart_driver, port);
+ uart_driver = meson_uart_current(port->private_data);
+ uart_remove_one_port(uart_driver, port);
meson_ports[pdev->id] = NULL;
+ for (int id = 0; id < AML_UART_PORT_NUM; id++)
+ if (meson_ports[id])
+ return 0;
+
+ /* No more available uart ports, unregister uart driver */
+ uart_unregister_driver(uart_driver);
+
return 0;
}
.has_xtal_div2 = true,
};
+static struct meson_uart_data meson_a1_uart_data = {
+ .uart_driver = &meson_uart_driver_ttyS,
+ .has_xtal_div2 = false,
+};
+
+static struct meson_uart_data meson_s4_uart_data = {
+ .uart_driver = &meson_uart_driver_ttyS,
+ .has_xtal_div2 = true,
+};
+
static const struct of_device_id meson_uart_dt_match[] = {
{ .compatible = "amlogic,meson6-uart" },
{ .compatible = "amlogic,meson8-uart" },
},
{
.compatible = "amlogic,meson-s4-uart",
- .data = (void *)&meson_g12a_uart_data,
+ .data = (void *)&meson_s4_uart_data,
+ },
+ {
+ .compatible = "amlogic,meson-a1-uart",
+ .data = (void *)&meson_a1_uart_data,
},
{ /* sentinel */ },
};
},
};
-static int __init meson_uart_init(void)
-{
- int ret;
-
- ret = meson_serial_console_init();
- if (ret)
- return ret;
-
- ret = uart_register_driver(&meson_uart_driver);
- if (ret)
- return ret;
-
- ret = platform_driver_register(&meson_uart_platform_driver);
- if (ret)
- uart_unregister_driver(&meson_uart_driver);
-
- return ret;
-}
-
-static void __exit meson_uart_exit(void)
-{
- platform_driver_unregister(&meson_uart_platform_driver);
- uart_unregister_driver(&meson_uart_driver);
-}
-
-module_init(meson_uart_init);
-module_exit(meson_uart_exit);
+module_platform_driver(meson_uart_platform_driver);
MODULE_AUTHOR("Carlo Caione <carlo@caione.org>");
MODULE_DESCRIPTION("Amlogic Meson serial port driver");
static void mlb_usio_rx_chars(struct uart_port *port)
{
struct tty_port *ttyport = &port->state->port;
- unsigned long flag = 0;
- char ch = 0;
+ u8 flag = 0, ch = 0;
u8 status;
int max_count = 2;
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/of_irq.h>
-#include <linux/of_platform.h>
+#include <linux/platform_device.h>
#include <linux/clk.h>
#include <asm/mpc52xx.h>
#include <linux/console.h>
#include <linux/io.h>
#include <linux/kernel.h>
-#include <linux/of_device.h>
#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/serial_core.h>
struct resource *res;
int ret;
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- mps_port->port.membase = devm_ioremap_resource(&pdev->dev, res);
+ mps_port->port.membase = devm_platform_get_and_ioremap_resource(pdev, 0, &res);
if (IS_ERR(mps_port->port.membase))
return PTR_ERR(mps_port->port.membase);
static int mvebu_uart_probe(struct platform_device *pdev)
{
- struct resource *reg = platform_get_resource(pdev, IORESOURCE_MEM, 0);
const struct of_device_id *match = of_match_device(mvebu_uart_of_match,
&pdev->dev);
struct uart_port *port;
struct mvebu_uart *mvuart;
+ struct resource *reg;
int id, irq;
- if (!reg) {
- dev_err(&pdev->dev, "no registers defined\n");
- return -EINVAL;
- }
-
/* Assume that all UART ports have a DT alias or none has */
id = of_alias_get_id(pdev->dev.of_node, "serial");
if (!pdev->dev.of_node || id < 0)
*/
port->irq = 0;
port->irqflags = 0;
- port->mapbase = reg->start;
- port->membase = devm_ioremap_resource(&pdev->dev, reg);
+ port->membase = devm_platform_get_and_ioremap_resource(pdev, 0, ®);
if (IS_ERR(port->membase))
return PTR_ERR(port->membase);
+ port->mapbase = reg->start;
mvuart = devm_kzalloc(&pdev->dev, sizeof(struct mvebu_uart),
GFP_KERNEL);
#include <linux/clk.h>
#include <linux/delay.h>
#include <linux/io.h>
-#include <linux/of_device.h>
+#include <linux/of.h>
#include <linux/dma-mapping.h>
#include <linux/dmaengine.h>
static void mxs_auart_rx_char(struct mxs_auart_port *s)
{
- int flag;
u32 stat;
- u8 c;
+ u8 c, flag;
c = mxs_read(s, REG_DATA);
stat = mxs_read(s, REG_STAT);
static void serial_omap_rlsi(struct uart_omap_port *up, unsigned int lsr)
{
- unsigned int flag;
+ u8 flag;
/*
* Read one data character out to avoid stalling the receiver according
static void serial_omap_rdi(struct uart_omap_port *up, unsigned int lsr)
{
- unsigned char ch = 0;
- unsigned int flag;
+ u8 ch;
if (!(lsr & UART_LSR_DR))
return;
return;
}
- 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);
+ uart_insert_char(&up->port, lsr, UART_LSR_OE, ch, TTY_NORMAL);
}
/**
if (!up)
return -ENOMEM;
- mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- base = devm_ioremap_resource(&pdev->dev, mem);
+ base = devm_platform_get_and_ioremap_resource(pdev, 0, &mem);
if (IS_ERR(base))
return PTR_ERR(base);
#include <linux/kernel.h>
#include <linux/platform_device.h>
#include <linux/of.h>
-#include <linux/of_device.h>
#include <linux/of_irq.h>
#include <linux/of_gpio.h>
#include <linux/init.h>
static inline void receive_chars(struct uart_pxa_port *up, int *status)
{
- unsigned int ch, flag;
+ u8 ch, flag;
int max_count = 256;
do {
#include <linux/irq.h>
#include <linux/module.h>
#include <linux/of.h>
-#include <linux/of_device.h>
#include <linux/pm_opp.h>
#include <linux/platform_device.h>
#include <linux/pm_runtime.h>
dma_addr_t rx_dma_addr;
bool setup;
unsigned int baud;
+ unsigned long clk_rate;
void *rx_buf;
u32 loopback;
bool brk;
goto out_restart_rx;
}
- dev_dbg(port->se.dev, "desired_rate-%u, clk_rate-%lu, clk_div-%u\n",
+ dev_dbg(port->se.dev, "desired_rate = %u, clk_rate = %lu, clk_div = %u\n",
baud * sampling_rate, clk_rate, clk_div);
uport->uartclk = clk_rate;
+ port->clk_rate = clk_rate;
dev_pm_opp_set_rate(uport->dev, clk_rate);
ser_clk_cfg = SER_CLK_EN;
ser_clk_cfg |= clk_div << CLK_DIV_SHFT;
if (new_state == UART_PM_STATE_ON && old_state == UART_PM_STATE_OFF) {
geni_icc_enable(&port->se);
+ if (port->clk_rate)
+ dev_pm_opp_set_rate(uport->dev, port->clk_rate);
geni_se_resources_on(&port->se);
} else if (new_state == UART_PM_STATE_OFF &&
old_state == UART_PM_STATE_ON) {
geni_se_resources_off(&port->se);
+ dev_pm_opp_set_rate(uport->dev, 0);
geni_icc_disable(&port->se);
}
}
private_data = uport->private_data;
if (uart_console(uport)) {
- geni_icc_set_tag(&port->se, 0x7);
+ geni_icc_set_tag(&port->se, QCOM_ICC_TAG_ALWAYS);
geni_icc_set_bw(&port->se);
ret = uart_resume_port(private_data->drv, uport);
/*
for (; bytes != 0; bytes--) {
u32 byte = readw(up->base + RP2_DATA_BYTE) | RP2_DUMMY_READ;
- char ch = byte & 0xff;
+ u8 ch = byte & 0xff;
if (likely(!(byte & RP2_DATA_BYTE_EXCEPTION_MASK))) {
if (!uart_handle_sysrq_char(&up->port, ch))
uart_insert_char(&up->port, byte, 0, ch,
TTY_NORMAL);
} else {
- char flag = TTY_NORMAL;
+ u8 flag = TTY_NORMAL;
if (byte & RP2_DATA_BYTE_BREAK_m)
flag = TTY_BREAK;
static void
sa1100_rx_chars(struct sa1100_port *sport)
{
- unsigned int status, ch, flg;
+ unsigned int status;
+ u8 ch, flg;
status = UTSR1_TO_SM(UART_GET_UTSR1(sport)) |
UTSR0_TO_SM(UART_GET_UTSR0(sport));
static void s3c24xx_serial_rx_drain_fifo(struct s3c24xx_uart_port *ourport)
{
struct uart_port *port = &ourport->port;
- unsigned int ufcon, ch, flag, ufstat, uerstat;
+ unsigned int ufcon, ufstat, uerstat;
unsigned int fifocnt = 0;
int max_count = port->fifosize;
+ u8 ch, flag;
while (max_count-- > 0) {
/*
{
struct uart_port *uport = &sport->port;
struct uart_icount *icount;
- unsigned int status, ch, flag;
+ unsigned int status;
int count;
+ u8 ch, flag;
for (count = 16; count; count--) {
status = read_sbdchn(sport, R_DUART_STATUS);
case SC16IS7XX_TXLVL_REG:
case SC16IS7XX_RXLVL_REG:
case SC16IS7XX_IOSTATE_REG:
+ case SC16IS7XX_IOCONTROL_REG:
return true;
default:
break;
unsigned int iir)
{
struct sc16is7xx_port *s = dev_get_drvdata(port->dev);
- unsigned int lsr = 0, ch, flag, bytes_read, i;
+ unsigned int lsr = 0, bytes_read, i;
bool read_lsr = (iir == SC16IS7XX_IIR_RLSE_SRC) ? true : false;
+ u8 ch, flag;
if (unlikely(rxlen >= sizeof(s->buf))) {
dev_warn_ratelimited(port->dev,
static void sccnxp_handle_rx(struct uart_port *port)
{
- u8 sr;
- unsigned int ch, flag;
+ u8 sr, ch, flag;
for (;;) {
sr = sccnxp_port_read(port, SCCNXP_SR_REG);
static int sccnxp_probe(struct platform_device *pdev)
{
- struct resource *res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
struct sccnxp_pdata *pdata = dev_get_platdata(&pdev->dev);
+ struct resource *res;
int i, ret, uartclk;
struct sccnxp_port *s;
void __iomem *membase;
struct clk *clk;
- membase = devm_ioremap_resource(&pdev->dev, res);
+ membase = devm_platform_get_and_ioremap_resource(pdev, 0, &res);
if (IS_ERR(membase))
return PTR_ERR(membase);
#include <linux/irq.h>
#include <linux/module.h>
#include <linux/of.h>
-#include <linux/of_device.h>
#include <linux/pagemap.h>
#include <linux/platform_device.h>
#include <linux/reset.h>
return 0;
}
-static char tegra_uart_decode_rx_error(struct tegra_uart_port *tup,
+static u8 tegra_uart_decode_rx_error(struct tegra_uart_port *tup,
unsigned long lsr)
{
- char flag = TTY_NORMAL;
+ u8 flag = TTY_NORMAL;
if (unlikely(lsr & TEGRA_UART_LSR_ANY)) {
if (lsr & UART_LSR_OE) {
struct tty_port *port)
{
do {
- char flag = TTY_NORMAL;
unsigned long lsr = 0;
- unsigned char ch;
+ u8 ch, flag = TTY_NORMAL;
lsr = tegra_uart_read(tup, UART_LSR);
if (!(lsr & UART_LSR_DR))
tup->cdata = cdata;
platform_set_drvdata(pdev, tup);
- resource = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!resource) {
- dev_err(&pdev->dev, "No IO memory resource\n");
- return -ENODEV;
- }
- u->mapbase = resource->start;
- u->membase = devm_ioremap_resource(&pdev->dev, resource);
+ u->membase = devm_platform_get_and_ioremap_resource(pdev, 0, &resource);
if (IS_ERR(u->membase))
return PTR_ERR(u->membase);
+ u->mapbase = resource->start;
tup->uart_clk = devm_clk_get(&pdev->dev, NULL);
- if (IS_ERR(tup->uart_clk)) {
- dev_err(&pdev->dev, "Couldn't get the clock\n");
- return PTR_ERR(tup->uart_clk);
- }
+ if (IS_ERR(tup->uart_clk))
+ return dev_err_probe(&pdev->dev, PTR_ERR(tup->uart_clk), "Couldn't get the clock");
tup->rst = devm_reset_control_get_exclusive(&pdev->dev, "serial");
if (IS_ERR(tup->rst)) {
uart_port_unlock(port, flags);
}
-static void __uart_start(struct tty_struct *tty)
+static void __uart_start(struct uart_state *state)
{
- struct uart_state *state = tty->driver_data;
struct uart_port *port = state->uart_port;
struct serial_port_device *port_dev;
int err;
unsigned long flags;
port = uart_port_lock(state, flags);
- __uart_start(tty);
+ __uart_start(state);
uart_port_unlock(port, flags);
}
if (!old_hw_stopped)
uport->ops->stop_tx(uport);
else
- __uart_start(tty);
+ __uart_start(state);
}
spin_unlock_irq(&uport->lock);
}
ret += c;
}
- __uart_start(tty);
+ __uart_start(state);
uart_port_unlock(port, flags);
return ret;
}
* @flag: flag for the character (see TTY_NORMAL and friends)
*/
void uart_insert_char(struct uart_port *port, unsigned int status,
- unsigned int overrun, unsigned int ch, unsigned int flag)
+ unsigned int overrun, u8 ch, u8 flag)
{
struct tty_port *tport = &port->state->port;
EXPORT_SYMBOL_GPL(uart_insert_char);
#ifdef CONFIG_MAGIC_SYSRQ_SERIAL
-static const char sysrq_toggle_seq[] = CONFIG_MAGIC_SYSRQ_SERIAL_SEQUENCE;
+static const u8 sysrq_toggle_seq[] = CONFIG_MAGIC_SYSRQ_SERIAL_SEQUENCE;
static void uart_sysrq_on(struct work_struct *w)
{
* Returns: %false if @ch is out of enabling sequence and should be
* handled some other way, %true if @ch was consumed.
*/
-bool uart_try_toggle_sysrq(struct uart_port *port, unsigned int ch)
+bool uart_try_toggle_sysrq(struct uart_port *port, u8 ch)
{
int sysrq_toggle_seq_len = strlen(sysrq_toggle_seq);
static inline void
receive_chars(struct uart_port *up, unsigned int *status)
{
- unsigned char ch;
unsigned int disr = *status;
int max_count = 256;
- char flag;
unsigned int next_ignore_status_mask;
+ u8 ch, flag;
do {
ch = sio_in(up, TXX9_SIRFIFO);
#include <linux/module.h>
#include <linux/mm.h>
#include <linux/of.h>
-#include <linux/of_device.h>
#include <linux/platform_device.h>
#include <linux/pm_runtime.h>
#include <linux/reset.h>
*/
static void __ssp_receive_chars(struct sifive_serial_port *ssp)
{
- unsigned char ch;
char is_empty;
int c;
+ u8 ch;
for (c = SIFIVE_RX_FIFO_DEPTH; c > 0; --c) {
ch = __ssp_receive_char(ssp, &is_empty);
if (irq < 0)
return -EPROBE_DEFER;
- mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- base = devm_ioremap_resource(&pdev->dev, mem);
- if (IS_ERR(base)) {
- dev_err(&pdev->dev, "could not acquire device memory\n");
+ base = devm_platform_get_and_ioremap_resource(pdev, 0, &mem);
+ if (IS_ERR(base))
return PTR_ERR(base);
- }
clk = devm_clk_get_enabled(&pdev->dev, NULL);
if (IS_ERR(clk)) {
if (sp->rx_dma.virt)
dma_free_coherent(sp->port.dev, SPRD_UART_RX_SIZE,
sp->rx_dma.virt, sp->rx_dma.phys_addr);
-
+ sp->rx_dma.virt = NULL;
}
static int sprd_rx_dma_config(struct uart_port *port, u32 burst)
}
static int handle_lsr_errors(struct uart_port *port,
- unsigned int *flag,
+ u8 *flag,
unsigned int *lsr)
{
int ret = 0;
struct sprd_uart_port *sp = container_of(port, struct sprd_uart_port,
port);
struct tty_port *tty = &port->state->port;
- unsigned int ch, flag, lsr, max_count = SPRD_TIMEOUT;
+ unsigned int lsr, max_count = SPRD_TIMEOUT;
+ u8 ch, flag;
if (sp->rx_dma.enable) {
sprd_uart_dma_irq(port);
static int sprd_clk_init(struct uart_port *uport)
{
struct clk *clk_uart, *clk_parent;
- struct sprd_uart_port *u = sprd_port[uport->line];
+ struct sprd_uart_port *u = container_of(uport, struct sprd_uart_port, port);
clk_uart = devm_clk_get(uport->dev, "uart");
if (IS_ERR(clk_uart)) {
{
struct resource *res;
struct uart_port *up;
+ struct sprd_uart_port *sport;
int irq;
int index;
int ret;
index = of_alias_get_id(pdev->dev.of_node, "serial");
- if (index < 0 || index >= ARRAY_SIZE(sprd_port)) {
+ if (index < 0 || index >= UART_NR_MAX) {
dev_err(&pdev->dev, "got a wrong serial alias id %d\n", index);
return -EINVAL;
}
- sprd_port[index] = devm_kzalloc(&pdev->dev, sizeof(*sprd_port[index]),
- GFP_KERNEL);
- if (!sprd_port[index])
+ sport = devm_kzalloc(&pdev->dev, sizeof(*sport), GFP_KERNEL);
+ if (!sport)
return -ENOMEM;
- up = &sprd_port[index]->port;
+ up = &sport->port;
up->dev = &pdev->dev;
up->line = index;
up->type = PORT_SPRD;
if (ret)
return ret;
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- up->membase = devm_ioremap_resource(&pdev->dev, res);
+ up->membase = devm_platform_get_and_ioremap_resource(pdev, 0, &res);
if (IS_ERR(up->membase))
return PTR_ERR(up->membase);
* Allocate one dma buffer to prepare for receive transfer, in case
* memory allocation failure at runtime.
*/
- ret = sprd_rx_alloc_buf(sprd_port[index]);
+ ret = sprd_rx_alloc_buf(sport);
if (ret)
return ret;
ret = uart_register_driver(&sprd_uart_driver);
if (ret < 0) {
pr_err("Failed to register SPRD-UART driver\n");
- return ret;
+ goto free_rx_buf;
}
}
+
sprd_ports_num++;
+ sprd_port[index] = sport;
ret = uart_add_one_port(&sprd_uart_driver, up);
if (ret)
- sprd_remove(pdev);
+ goto clean_port;
platform_set_drvdata(pdev, up);
+ return 0;
+
+clean_port:
+ sprd_port[index] = NULL;
+ if (--sprd_ports_num == 0)
+ uart_unregister_driver(&sprd_uart_driver);
+free_rx_buf:
+ sprd_rx_free_buf(sport);
return ret;
}
struct tty_port *tport = &port->state->port;
unsigned long status, mode;
unsigned long c = 0;
- char flag;
+ u8 flag;
bool ignore_pe = false;
/*
port->irq = platform_get_irq(pdev, 0);
port->has_sysrq = IS_ENABLED(CONFIG_SERIAL_ST_ASC_CONSOLE);
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- port->membase = devm_ioremap_resource(&pdev->dev, res);
+ port->membase = devm_platform_get_and_ioremap_resource(pdev, 0, &res);
if (IS_ERR(port->membase))
return PTR_ERR(port->membase);
port->mapbase = res->start;
if (WARN_ON(IS_ERR(ascport->clk)))
return -EINVAL;
/* ensure that clk rate is correct by enabling the clk */
- clk_prepare_enable(ascport->clk);
+ ret = clk_prepare_enable(ascport->clk);
+ if (ret)
+ return ret;
ascport->port.uartclk = clk_get_rate(ascport->clk);
WARN_ON(ascport->port.uartclk == 0);
clk_disable_unprepare(ascport->clk);
return false;
}
-static unsigned long stm32_usart_get_char_pio(struct uart_port *port)
+static u8 stm32_usart_get_char_pio(struct uart_port *port)
{
struct stm32_port *stm32_port = to_stm32_port(port);
const struct stm32_usart_offsets *ofs = &stm32_port->info->ofs;
{
struct stm32_port *stm32_port = to_stm32_port(port);
const struct stm32_usart_offsets *ofs = &stm32_port->info->ofs;
- unsigned long c;
unsigned int size = 0;
u32 sr;
- char flag;
+ u8 c, flag;
while (stm32_usart_pending_rx_pio(port, &sr)) {
sr |= USART_SR_DUMMY_RX;
#include <linux/slab.h>
#include <linux/delay.h>
#include <linux/init.h>
-#include <linux/of_device.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
#include <asm/hypervisor.h>
#include <asm/spitfire.h>
-#include <asm/prom.h>
#include <asm/irq.h>
#include <asm/setup.h>
static void receive_chars(struct uart_port *port)
{
unsigned int lsr = readl(port->membase + SUP_UART_LSR);
- unsigned int ch, flag;
+ u8 ch, flag;
do {
ch = readl(port->membase + SUP_UART_DATA);
#include <linux/slab.h>
#include <linux/delay.h>
#include <linux/init.h>
-#include <linux/of_device.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
#include <linux/io.h>
#include <asm/irq.h>
#include <linux/serial_reg.h>
#include <linux/init.h>
#include <linux/delay.h>
-#include <linux/of_device.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
#include <linux/io.h>
#include <asm/irq.h>
-#include <asm/prom.h>
#include <asm/setup.h>
#include <linux/serial_core.h>
#include <linux/serio.h>
#endif
#include <linux/init.h>
-#include <linux/of_device.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
#include <linux/io.h>
#include <asm/irq.h>
-#include <asm/prom.h>
#include <asm/setup.h>
#include <linux/serial_core.h>
#include <linux/mailbox_client.h>
#include <linux/module.h>
#include <linux/of.h>
-#include <linux/of_device.h>
#include <linux/platform_device.h>
#include <linux/serial.h>
#include <linux/serial_core.h>
#include <linux/io.h>
#include <linux/iopoll.h>
#include <linux/of.h>
-#include <linux/of_address.h>
-#include <linux/of_device.h>
-#include <linux/of_platform.h>
#include <linux/clk.h>
#include <linux/pm_runtime.h>
*/
#include <linux/module.h>
+#include <linux/platform_device.h>
#include <linux/serial.h>
#include <linux/serial_core.h>
#include <linux/slab.h>
#include <linux/tty.h>
#include <linux/tty_flip.h>
#include <linux/io.h>
+#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/of_irq.h>
-#include <linux/of_platform.h>
#include <linux/dma-mapping.h>
#include <linux/fs_uart_pd.h>
#include <linux/irq.h>
#include <linux/init.h>
#include <linux/console.h>
+#include <linux/platform_device.h>
#include <linux/tty.h>
#include <linux/tty_flip.h>
#include <linux/serial_core.h>
#include <linux/slab.h>
#include <linux/clk.h>
#include <linux/of.h>
-#include <linux/of_device.h>
#include <linux/err.h>
/*
if (!flags)
return -EINVAL;
- mmres = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!mmres)
- return -ENODEV;
-
irq = platform_get_irq(pdev, 0);
if (irq < 0)
return irq;
if (!vt8500_port)
return -ENOMEM;
- vt8500_port->uart.membase = devm_ioremap_resource(&pdev->dev, mmres);
+ vt8500_port->uart.membase = devm_platform_get_and_ioremap_resource(pdev, 0, &mmres);
if (IS_ERR(vt8500_port->uart.membase))
return PTR_ERR(vt8500_port->uart.membase);
struct uart_port *uport = &zport->port;
struct zs_scc *scc = zport->scc;
struct uart_icount *icount;
- unsigned int avail, status, ch, flag;
+ unsigned int avail, status;
int count;
+ u8 ch, flag;
for (count = 16; count; count--) {
spin_lock(&scc->zlock);
__setup("sysrq_always_enabled", sysrq_always_enabled_setup);
-static void sysrq_handle_loglevel(int key)
+static void sysrq_handle_loglevel(u8 key)
{
- int i;
+ u8 loglevel = key - '0';
- i = key - '0';
console_loglevel = CONSOLE_LOGLEVEL_DEFAULT;
- pr_info("Loglevel set to %d\n", i);
- console_loglevel = i;
+ pr_info("Loglevel set to %u\n", loglevel);
+ console_loglevel = loglevel;
}
static const struct sysrq_key_op sysrq_loglevel_op = {
.handler = sysrq_handle_loglevel,
};
#ifdef CONFIG_VT
-static void sysrq_handle_SAK(int key)
+static void sysrq_handle_SAK(u8 key)
{
struct work_struct *SAK_work = &vc_cons[fg_console].SAK_work;
#endif
#ifdef CONFIG_VT
-static void sysrq_handle_unraw(int key)
+static void sysrq_handle_unraw(u8 key)
{
vt_reset_unicode(fg_console);
}
#define sysrq_unraw_op (*(const struct sysrq_key_op *)NULL)
#endif /* CONFIG_VT */
-static void sysrq_handle_crash(int key)
+static void sysrq_handle_crash(u8 key)
{
/* release the RCU read lock before crashing */
rcu_read_unlock();
.enable_mask = SYSRQ_ENABLE_DUMP,
};
-static void sysrq_handle_reboot(int key)
+static void sysrq_handle_reboot(u8 key)
{
lockdep_off();
local_irq_enable();
const struct sysrq_key_op *__sysrq_reboot_op = &sysrq_reboot_op;
-static void sysrq_handle_sync(int key)
+static void sysrq_handle_sync(u8 key)
{
emergency_sync();
}
.enable_mask = SYSRQ_ENABLE_SYNC,
};
-static void sysrq_handle_show_timers(int key)
+static void sysrq_handle_show_timers(u8 key)
{
sysrq_timer_list_show();
}
.action_msg = "Show clockevent devices & pending hrtimers (no others)",
};
-static void sysrq_handle_mountro(int key)
+static void sysrq_handle_mountro(u8 key)
{
emergency_remount();
}
};
#ifdef CONFIG_LOCKDEP
-static void sysrq_handle_showlocks(int key)
+static void sysrq_handle_showlocks(u8 key)
{
debug_show_all_locks();
}
static DECLARE_WORK(sysrq_showallcpus, sysrq_showregs_othercpus);
-static void sysrq_handle_showallcpus(int key)
+static void sysrq_handle_showallcpus(u8 key)
{
/*
* Fall back to the workqueue based printing if the
#define sysrq_showallcpus_op (*(const struct sysrq_key_op *)NULL)
#endif
-static void sysrq_handle_showregs(int key)
+static void sysrq_handle_showregs(u8 key)
{
struct pt_regs *regs = NULL;
.enable_mask = SYSRQ_ENABLE_DUMP,
};
-static void sysrq_handle_showstate(int key)
+static void sysrq_handle_showstate(u8 key)
{
show_state();
show_all_workqueues();
.enable_mask = SYSRQ_ENABLE_DUMP,
};
-static void sysrq_handle_showstate_blocked(int key)
+static void sysrq_handle_showstate_blocked(u8 key)
{
show_state_filter(TASK_UNINTERRUPTIBLE);
}
#ifdef CONFIG_TRACING
#include <linux/ftrace.h>
-static void sysrq_ftrace_dump(int key)
+static void sysrq_ftrace_dump(u8 key)
{
ftrace_dump(DUMP_ALL);
}
#define sysrq_ftrace_dump_op (*(const struct sysrq_key_op *)NULL)
#endif
-static void sysrq_handle_showmem(int key)
+static void sysrq_handle_showmem(u8 key)
{
show_mem(0, NULL);
}
read_unlock(&tasklist_lock);
}
-static void sysrq_handle_term(int key)
+static void sysrq_handle_term(u8 key)
{
send_sig_all(SIGTERM);
console_loglevel = CONSOLE_LOGLEVEL_DEBUG;
static DECLARE_WORK(moom_work, moom_callback);
-static void sysrq_handle_moom(int key)
+static void sysrq_handle_moom(u8 key)
{
schedule_work(&moom_work);
}
};
#ifdef CONFIG_BLOCK
-static void sysrq_handle_thaw(int key)
+static void sysrq_handle_thaw(u8 key)
{
emergency_thaw_all();
}
#define sysrq_thaw_op (*(const struct sysrq_key_op *)NULL)
#endif
-static void sysrq_handle_kill(int key)
+static void sysrq_handle_kill(u8 key)
{
send_sig_all(SIGKILL);
console_loglevel = CONSOLE_LOGLEVEL_DEBUG;
.enable_mask = SYSRQ_ENABLE_SIGNAL,
};
-static void sysrq_handle_unrt(int key)
+static void sysrq_handle_unrt(u8 key)
{
normalize_rt_tasks();
}
};
/* key2index calculation, -1 on invalid index */
-static int sysrq_key_table_key2index(int key)
+static int sysrq_key_table_key2index(u8 key)
{
- int retval;
-
- if ((key >= '0') && (key <= '9'))
- retval = key - '0';
- else if ((key >= 'a') && (key <= 'z'))
- retval = key + 10 - 'a';
- else if ((key >= 'A') && (key <= 'Z'))
- retval = key + 36 - 'A';
- else
- retval = -1;
- return retval;
+ switch (key) {
+ case '0' ... '9':
+ return key - '0';
+ case 'a' ... 'z':
+ return key - 'a' + 10;
+ case 'A' ... 'Z':
+ return key - 'A' + 10 + 26;
+ default:
+ return -1;
+ }
}
/*
* get and put functions for the table, exposed to modules.
*/
-static const struct sysrq_key_op *__sysrq_get_key_op(int key)
+static const struct sysrq_key_op *__sysrq_get_key_op(u8 key)
{
const struct sysrq_key_op *op_p = NULL;
int i;
return op_p;
}
-static void __sysrq_put_key_op(int key, const struct sysrq_key_op *op_p)
+static void __sysrq_put_key_op(u8 key, const struct sysrq_key_op *op_p)
{
int i = sysrq_key_table_key2index(key);
sysrq_key_table[i] = op_p;
}
-void __handle_sysrq(int key, bool check_mask)
+void __handle_sysrq(u8 key, bool check_mask)
{
const struct sysrq_key_op *op_p;
int orig_log_level;
suppress_printk = orig_suppress_printk;
}
-void handle_sysrq(int key)
+void handle_sysrq(u8 key)
{
if (sysrq_on())
__handle_sysrq(key, true);
}
EXPORT_SYMBOL_GPL(sysrq_toggle_support);
-static int __sysrq_swap_key_ops(int key, const struct sysrq_key_op *insert_op_p,
+static int __sysrq_swap_key_ops(u8 key, const struct sysrq_key_op *insert_op_p,
const struct sysrq_key_op *remove_op_p)
{
int retval;
return retval;
}
-int register_sysrq_key(int key, const struct sysrq_key_op *op_p)
+int register_sysrq_key(u8 key, const struct sysrq_key_op *op_p)
{
return __sysrq_swap_key_ops(key, op_p, NULL);
}
EXPORT_SYMBOL(register_sysrq_key);
-int unregister_sysrq_key(int key, const struct sysrq_key_op *op_p)
+int unregister_sysrq_key(u8 key, const struct sysrq_key_op *op_p)
{
return __sysrq_swap_key_ops(key, NULL, op_p);
}
}
/* Caller must hold tty_lock */
-static int check_tty_count(struct tty_struct *tty, const char *routine)
+static void check_tty_count(struct tty_struct *tty, const char *routine)
{
#ifdef CHECK_TTY_COUNT
struct list_head *p;
if (tty->count != (count + kopen_count)) {
tty_warn(tty, "%s: tty->count(%d) != (#fd's(%d) + #kopen's(%d))\n",
routine, tty->count, count, kopen_count);
- return (count + kopen_count);
}
#endif
- return 0;
}
/**
#define PCI_SUBDEVICE_ID_AT_2700FX 0x2701
#define PCI_SUBDEVICE_ID_AT_2701FX 0x2703
+#define PCI_VENDOR_ID_ASIX 0x125b
+#define PCI_DEVICE_ID_ASIX_AX99100 0x9100
+#define PCI_DEVICE_ID_ASIX_AX99100_LB 0x9110
+
#define PCI_VENDOR_ID_ESS 0x125d
#define PCI_DEVICE_ID_ESS_ESS1968 0x1968
#define PCI_DEVICE_ID_ESS_ESS1978 0x1978
struct serial_port_device *port_dev; /* serial core port device */
unsigned long sysrq; /* sysrq timeout */
- unsigned int sysrq_ch; /* char for sysrq */
+ u8 sysrq_ch; /* char for sysrq */
unsigned char has_sysrq;
unsigned char sysrq_seq; /* index in sysrq_toggle_seq */
void uart_handle_cts_change(struct uart_port *uport, bool active);
void uart_insert_char(struct uart_port *port, unsigned int status,
- unsigned int overrun, unsigned int ch, unsigned int flag);
+ unsigned int overrun, u8 ch, u8 flag);
void uart_xchar_out(struct uart_port *uport, int offset);
#ifdef CONFIG_MAGIC_SYSRQ_SERIAL
#define SYSRQ_TIMEOUT (HZ * 5)
-bool uart_try_toggle_sysrq(struct uart_port *port, unsigned int ch);
+bool uart_try_toggle_sysrq(struct uart_port *port, u8 ch);
-static inline int uart_handle_sysrq_char(struct uart_port *port, unsigned int ch)
+static inline int uart_handle_sysrq_char(struct uart_port *port, u8 ch)
{
if (!port->sysrq)
return 0;
return 0;
}
-static inline int uart_prepare_sysrq_char(struct uart_port *port, unsigned int ch)
+static inline int uart_prepare_sysrq_char(struct uart_port *port, u8 ch)
{
if (!port->sysrq)
return 0;
static inline void uart_unlock_and_check_sysrq(struct uart_port *port)
{
- int sysrq_ch;
+ u8 sysrq_ch;
if (!port->has_sysrq) {
spin_unlock(&port->lock);
static inline void uart_unlock_and_check_sysrq_irqrestore(struct uart_port *port,
unsigned long flags)
{
- int sysrq_ch;
+ u8 sysrq_ch;
if (!port->has_sysrq) {
spin_unlock_irqrestore(&port->lock, flags);
handle_sysrq(sysrq_ch);
}
#else /* CONFIG_MAGIC_SYSRQ_SERIAL */
-static inline int uart_handle_sysrq_char(struct uart_port *port, unsigned int ch)
+static inline int uart_handle_sysrq_char(struct uart_port *port, u8 ch)
{
return 0;
}
-static inline int uart_prepare_sysrq_char(struct uart_port *port, unsigned int ch)
+static inline int uart_prepare_sysrq_char(struct uart_port *port, u8 ch)
{
return 0;
}
#define SYSRQ_ENABLE_RTNICE 0x0100
struct sysrq_key_op {
- void (* const handler)(int);
+ void (* const handler)(u8);
const char * const help_msg;
const char * const action_msg;
const int enable_mask;
* are available -- else NULL's).
*/
-void handle_sysrq(int key);
-void __handle_sysrq(int key, bool check_mask);
-int register_sysrq_key(int key, const struct sysrq_key_op *op);
-int unregister_sysrq_key(int key, const struct sysrq_key_op *op);
+void handle_sysrq(u8 key);
+void __handle_sysrq(u8 key, bool check_mask);
+int register_sysrq_key(u8 key, const struct sysrq_key_op *op);
+int unregister_sysrq_key(u8 key, const struct sysrq_key_op *op);
extern const struct sysrq_key_op *__sysrq_reboot_op;
int sysrq_toggle_support(int enable_mask);
#else
-static inline void handle_sysrq(int key)
+static inline void handle_sysrq(u8 key)
{
}
-static inline void __handle_sysrq(int key, bool check_mask)
+static inline void __handle_sysrq(u8 key, bool check_mask)
{
}
-static inline int register_sysrq_key(int key, const struct sysrq_key_op *op)
+static inline int register_sysrq_key(u8 key, const struct sysrq_key_op *op)
{
return -EINVAL;
}
-static inline int unregister_sysrq_key(int key, const struct sysrq_key_op *op)
+static inline int unregister_sysrq_key(u8 key, const struct sysrq_key_op *op)
{
return -EINVAL;
}
early_param("kgdbcon", opt_kgdb_con);
#ifdef CONFIG_MAGIC_SYSRQ
-static void sysrq_handle_dbg(int key)
+static void sysrq_handle_dbg(u8 key)
{
if (!dbg_io_ops) {
pr_crit("ERROR: No KGDB I/O module available\n");
static DECLARE_WORK(poweroff_work, do_poweroff);
-static void handle_poweroff(int key)
+static void handle_poweroff(u8 key)
{
/* run sysrq poweroff on boot cpu */
schedule_work_on(cpumask_first(cpu_online_mask), &poweroff_work);
module_param(sysrq_rcu, bool, 0444);
/* Dump grace-period-request information due to commandeered sysrq. */
-static void sysrq_show_rcu(int key)
+static void sysrq_show_rcu(u8 key)
{
show_rcu_gp_kthreads();
}
projects / platform / kernel / linux-starfive.git / commitdiff