serial: clps711x: Convert all static variables to dynamic
This patch converts all static variables of clps711x serial driver to dynamic allocating. In this case we are should remove console_initcall() and declare console during driver registration. Early kernel messages can be retrieved by add "earlyprintk" option to the kernel command line. Signed-off-by: Alexander Shiyan <shc_work@mail.ru> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Alexander Shiyan
Greg Kroah-Hartman
parent
95113728f0
commit
117d5d424a
@ -43,28 +43,29 @@
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#include <asm/irq.h>
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#define UART_CLPS711X_NAME "uart-clps711x"
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#define UART_CLPS711X_NR 2
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#define UART_CLPS711X_MAJOR 204
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#define UART_CLPS711X_MINOR 40
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#define UART_NR 2
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#define SERIAL_CLPS711X_MAJOR 204
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#define SERIAL_CLPS711X_MINOR 40
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#define SERIAL_CLPS711X_NR UART_NR
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/*
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* We use the relevant SYSCON register as a base address for these ports.
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*/
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#define UBRLCR(port) ((port)->iobase + UBRLCR1 - SYSCON1)
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#define UARTDR(port) ((port)->iobase + UARTDR1 - SYSCON1)
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#define SYSFLG(port) ((port)->iobase + SYSFLG1 - SYSCON1)
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#define SYSCON(port) ((port)->iobase + SYSCON1 - SYSCON1)
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#define TX_IRQ(port) ((port)->irq)
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#define RX_IRQ(port) ((port)->irq + 1)
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#define UBRLCR(port) ((port)->line ? UBRLCR2 : UBRLCR1)
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#define UARTDR(port) ((port)->line ? UARTDR2 : UARTDR1)
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#define SYSFLG(port) ((port)->line ? SYSFLG2 : SYSFLG1)
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#define SYSCON(port) ((port)->line ? SYSCON2 : SYSCON1)
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#define TX_IRQ(port) ((port)->line ? IRQ_UTXINT2 : IRQ_UTXINT1)
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#define RX_IRQ(port) ((port)->line ? IRQ_URXINT2 : IRQ_URXINT1)
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#define UART_ANY_ERR (UARTDR_FRMERR | UARTDR_PARERR | UARTDR_OVERR)
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#define tx_enabled(port) ((port)->unused[0])
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struct clps711x_port {
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struct uart_driver uart;
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struct uart_port port[UART_CLPS711X_NR];
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#ifdef CONFIG_SERIAL_CLPS711X_CONSOLE
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struct console console;
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#endif
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};
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static void clps711xuart_stop_tx(struct uart_port *port)
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{
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if (tx_enabled(port)) {
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@ -382,7 +383,7 @@ static int clps711xuart_request_port(struct uart_port *port)
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return 0;
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}
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static struct uart_ops clps711x_pops = {
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static struct uart_ops uart_clps711x_ops = {
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.tx_empty = clps711xuart_tx_empty,
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.set_mctrl = clps711xuart_set_mctrl_null,
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.get_mctrl = clps711xuart_get_mctrl,
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@ -400,72 +401,39 @@ static struct uart_ops clps711x_pops = {
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.request_port = clps711xuart_request_port,
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};
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static struct uart_port clps711x_ports[UART_NR] = {
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{
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.iobase = SYSCON1,
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.irq = IRQ_UTXINT1, /* IRQ_URXINT1, IRQ_UMSINT */
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.uartclk = 3686400,
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.fifosize = 16,
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.ops = &clps711x_pops,
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.line = 0,
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.flags = UPF_BOOT_AUTOCONF,
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},
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{
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.iobase = SYSCON2,
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.irq = IRQ_UTXINT2, /* IRQ_URXINT2 */
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.uartclk = 3686400,
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.fifosize = 16,
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.ops = &clps711x_pops,
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.line = 1,
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.flags = UPF_BOOT_AUTOCONF,
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}
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};
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#ifdef CONFIG_SERIAL_CLPS711X_CONSOLE
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static void clps711xuart_console_putchar(struct uart_port *port, int ch)
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static void uart_clps711x_console_putchar(struct uart_port *port, int ch)
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{
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while (clps_readl(SYSFLG(port)) & SYSFLG_UTXFF)
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barrier();
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clps_writel(ch, UARTDR(port));
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clps_writew(ch, UARTDR(port));
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}
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/*
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* Print a string to the serial port trying not to disturb
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* any possible real use of the port...
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*
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* The console_lock must be held when we get here.
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*
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* Note that this is called with interrupts already disabled
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*/
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static void
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clps711xuart_console_write(struct console *co, const char *s,
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unsigned int count)
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static void uart_clps711x_console_write(struct console *co, const char *c,
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unsigned n)
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{
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struct uart_port *port = clps711x_ports + co->index;
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unsigned int status, syscon;
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struct clps711x_port *s = (struct clps711x_port *)co->data;
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struct uart_port *port = &s->port[co->index];
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u32 syscon;
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/*
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* Ensure that the port is enabled.
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*/
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/* Ensure that the port is enabled */
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syscon = clps_readl(SYSCON(port));
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clps_writel(syscon | SYSCON_UARTEN, SYSCON(port));
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uart_console_write(port, s, count, clps711xuart_console_putchar);
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uart_console_write(port, c, n, uart_clps711x_console_putchar);
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/*
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* Finally, wait for transmitter to become empty
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* and restore the uart state.
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*/
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do {
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status = clps_readl(SYSFLG(port));
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} while (status & SYSFLG_UBUSY);
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/* Wait for transmitter to become empty */
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while (clps_readl(SYSFLG(port)) & SYSFLG_UBUSY)
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barrier();
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/* Restore the uart state */
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clps_writel(syscon, SYSCON(port));
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}
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static void __init
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clps711xuart_console_get_options(struct uart_port *port, int *baud,
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int *parity, int *bits)
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static void uart_clps711x_console_get_options(struct uart_port *port,
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int *baud, int *parity,
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int *bits)
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{
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if (clps_readl(SYSCON(port)) & SYSCON_UARTEN) {
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unsigned int ubrlcr, quot;
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@ -490,86 +458,85 @@ clps711xuart_console_get_options(struct uart_port *port, int *baud,
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}
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}
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static int __init clps711xuart_console_setup(struct console *co, char *options)
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static int uart_clps711x_console_setup(struct console *co, char *options)
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{
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struct uart_port *port;
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int baud = 38400;
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int bits = 8;
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int parity = 'n';
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int flow = 'n';
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/*
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* Check whether an invalid uart number has been specified, and
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* if so, search for the first available port that does have
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* console support.
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*/
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port = uart_get_console(clps711x_ports, UART_NR, co);
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int baud = 38400, bits = 8, parity = 'n', flow = 'n';
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struct clps711x_port *s = (struct clps711x_port *)co->data;
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struct uart_port *port = &s->port[(co->index > 0) ? co->index : 0];
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if (options)
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uart_parse_options(options, &baud, &parity, &bits, &flow);
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else
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clps711xuart_console_get_options(port, &baud, &parity, &bits);
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uart_clps711x_console_get_options(port, &baud, &parity, &bits);
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return uart_set_options(port, co, baud, parity, bits, flow);
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}
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static struct uart_driver clps711x_reg;
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static struct console clps711x_console = {
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.name = "ttyCL",
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.write = clps711xuart_console_write,
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.device = uart_console_device,
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.setup = clps711xuart_console_setup,
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.flags = CON_PRINTBUFFER,
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.index = -1,
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.data = &clps711x_reg,
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};
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static int __init clps711xuart_console_init(void)
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{
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register_console(&clps711x_console);
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return 0;
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}
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console_initcall(clps711xuart_console_init);
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#define CLPS711X_CONSOLE &clps711x_console
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#else
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#define CLPS711X_CONSOLE NULL
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#endif
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static struct uart_driver clps711x_reg = {
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.driver_name = "ttyCL",
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.dev_name = "ttyCL",
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.major = SERIAL_CLPS711X_MAJOR,
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.minor = SERIAL_CLPS711X_MINOR,
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.nr = UART_NR,
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.cons = CLPS711X_CONSOLE,
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};
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static int __devinit uart_clps711x_probe(struct platform_device *pdev)
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{
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struct clps711x_port *s;
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int ret, i;
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printk(KERN_INFO "Serial: CLPS711x driver\n");
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s = devm_kzalloc(&pdev->dev, sizeof(struct clps711x_port), GFP_KERNEL);
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if (!s) {
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dev_err(&pdev->dev, "Error allocating port structure\n");
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return -ENOMEM;
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}
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platform_set_drvdata(pdev, s);
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ret = uart_register_driver(&clps711x_reg);
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if (ret)
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return ret;
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s->uart.owner = THIS_MODULE;
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s->uart.dev_name = "ttyCL";
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s->uart.major = UART_CLPS711X_MAJOR;
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s->uart.minor = UART_CLPS711X_MINOR;
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s->uart.nr = UART_CLPS711X_NR;
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#ifdef CONFIG_SERIAL_CLPS711X_CONSOLE
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s->uart.cons = &s->console;
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s->uart.cons->device = uart_console_device;
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s->uart.cons->write = uart_clps711x_console_write;
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s->uart.cons->setup = uart_clps711x_console_setup;
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s->uart.cons->flags = CON_PRINTBUFFER;
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s->uart.cons->index = -1;
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s->uart.cons->data = s;
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strcpy(s->uart.cons->name, "ttyCL");
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#endif
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ret = uart_register_driver(&s->uart);
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if (ret) {
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dev_err(&pdev->dev, "Registering UART driver failed\n");
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goto err_out;
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}
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for (i = 0; i < UART_NR; i++)
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uart_add_one_port(&clps711x_reg, &clps711x_ports[i]);
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for (i = 0; i < UART_CLPS711X_NR; i++) {
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s->port[i].line = i;
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s->port[i].dev = &pdev->dev;
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s->port[i].irq = TX_IRQ(&s->port[i]);
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s->port[i].iobase = SYSCON(&s->port[i]);
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s->port[i].type = PORT_CLPS711X;
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s->port[i].fifosize = 16;
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s->port[i].flags = UPF_SKIP_TEST | UPF_FIXED_TYPE;
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s->port[i].uartclk = 3686400;
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s->port[i].ops = &uart_clps711x_ops;
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WARN_ON(uart_add_one_port(&s->uart, &s->port[i]));
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}
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return 0;
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err_out:
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platform_set_drvdata(pdev, NULL);
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return ret;
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}
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static int __devexit uart_clps711x_remove(struct platform_device *pdev)
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{
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struct clps711x_port *s = platform_get_drvdata(pdev);
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int i;
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for (i = 0; i < UART_NR; i++)
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uart_remove_one_port(&clps711x_reg, &clps711x_ports[i]);
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for (i = 0; i < UART_CLPS711X_NR; i++)
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uart_remove_one_port(&s->uart, &s->port[i]);
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uart_unregister_driver(&clps711x_reg);
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uart_unregister_driver(&s->uart);
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platform_set_drvdata(pdev, NULL);
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return 0;
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}
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