From 46a3b5c8df939f5547bcd3684030072c94d06bd8 Mon Sep 17 00:00:00 2001 From: Minkyu Kang Date: Wed, 24 Mar 2010 16:59:30 +0900 Subject: SAMSUNG: serial: modify name from s5pc1xx to s5p Because of other s5p series SoC will use these serial functions, modify function's name and structure's name. Signed-off-by: Minkyu Kang --- drivers/serial/Makefile | 2 +- drivers/serial/serial_s5p.c | 206 ++++++++++++++++++++++++++++++++++++++++ drivers/serial/serial_s5pc1xx.c | 206 ---------------------------------------- 3 files changed, 207 insertions(+), 207 deletions(-) create mode 100644 drivers/serial/serial_s5p.c delete mode 100644 drivers/serial/serial_s5pc1xx.c (limited to 'drivers') diff --git a/drivers/serial/Makefile b/drivers/serial/Makefile index d2b4820b6f..c731bfb594 100644 --- a/drivers/serial/Makefile +++ b/drivers/serial/Makefile @@ -36,7 +36,7 @@ COBJS-$(CONFIG_OPENCORES_YANU) += opencores_yanu.o COBJS-$(CONFIG_SYS_NS16550) += ns16550.o COBJS-$(CONFIG_DRIVER_S3C4510_UART) += s3c4510b_uart.o COBJS-$(CONFIG_S3C64XX) += s3c64xx.o -COBJS-$(CONFIG_S5PC1XX) += serial_s5pc1xx.o +COBJS-$(CONFIG_S5PC1XX) += serial_s5p.o COBJS-$(CONFIG_SYS_NS16550_SERIAL) += serial.o COBJS-$(CONFIG_CLPS7111_SERIAL) += serial_clps7111.o COBJS-$(CONFIG_IMX_SERIAL) += serial_imx.o diff --git a/drivers/serial/serial_s5p.c b/drivers/serial/serial_s5p.c new file mode 100644 index 0000000000..9747db3721 --- /dev/null +++ b/drivers/serial/serial_s5p.c @@ -0,0 +1,206 @@ +/* + * (C) Copyright 2009 SAMSUNG Electronics + * Minkyu Kang + * Heungjun Kim + * + * based on drivers/serial/s3c64xx.c + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + * + */ + +#include +#include +#include +#include +#include + +static inline struct s5p_uart *s5p_get_base_uart(int dev_index) +{ + u32 offset = dev_index * sizeof(struct s5p_uart); + + if (cpu_is_s5pc100()) + return (struct s5p_uart *)(S5PC100_UART_BASE + offset); + else + return (struct s5p_uart *)(S5PC110_UART_BASE + offset); +} + +/* + * The coefficient, used to calculate the baudrate on S5P UARTs is + * calculated as + * C = UBRDIV * 16 + number_of_set_bits_in_UDIVSLOT + * however, section 31.6.11 of the datasheet doesn't recomment using 1 for 1, + * 3 for 2, ... (2^n - 1) for n, instead, they suggest using these constants: + */ +static const int udivslot[] = { + 0, + 0x0080, + 0x0808, + 0x0888, + 0x2222, + 0x4924, + 0x4a52, + 0x54aa, + 0x5555, + 0xd555, + 0xd5d5, + 0xddd5, + 0xdddd, + 0xdfdd, + 0xdfdf, + 0xffdf, +}; + +void serial_setbrg_dev(const int dev_index) +{ + DECLARE_GLOBAL_DATA_PTR; + struct s5p_uart *const uart = s5p_get_base_uart(dev_index); + u32 pclk = get_pclk(); + u32 baudrate = gd->baudrate; + u32 val; + + val = pclk / baudrate; + + writel(val / 16 - 1, &uart->ubrdiv); + writew(udivslot[val % 16], &uart->udivslot); +} + +/* + * Initialise the serial port with the given baudrate. The settings + * are always 8 data bits, no parity, 1 stop bit, no start bits. + */ +int serial_init_dev(const int dev_index) +{ + struct s5p_uart *const uart = s5p_get_base_uart(dev_index); + + /* reset and enable FIFOs, set triggers to the maximum */ + writel(0, &uart->ufcon); + writel(0, &uart->umcon); + /* 8N1 */ + writel(0x3, &uart->ulcon); + /* No interrupts, no DMA, pure polling */ + writel(0x245, &uart->ucon); + + serial_setbrg_dev(dev_index); + + return 0; +} + +static int serial_err_check(const int dev_index, int op) +{ + struct s5p_uart *const uart = s5p_get_base_uart(dev_index); + unsigned int mask; + + /* + * UERSTAT + * Break Detect [3] + * Frame Err [2] : receive operation + * Parity Err [1] : receive operation + * Overrun Err [0] : receive operation + */ + if (op) + mask = 0x8; + else + mask = 0xf; + + return readl(&uart->uerstat) & mask; +} + +/* + * Read a single byte from the serial port. Returns 1 on success, 0 + * otherwise. When the function is succesfull, the character read is + * written into its argument c. + */ +int serial_getc_dev(const int dev_index) +{ + struct s5p_uart *const uart = s5p_get_base_uart(dev_index); + + /* wait for character to arrive */ + while (!(readl(&uart->utrstat) & 0x1)) { + if (serial_err_check(dev_index, 0)) + return 0; + } + + return (int)(readl(&uart->urxh) & 0xff); +} + +/* + * Output a single byte to the serial port. + */ +void serial_putc_dev(const char c, const int dev_index) +{ + struct s5p_uart *const uart = s5p_get_base_uart(dev_index); + + /* wait for room in the tx FIFO */ + while (!(readl(&uart->utrstat) & 0x2)) { + if (serial_err_check(dev_index, 1)) + return; + } + + writel(c, &uart->utxh); + + /* If \n, also do \r */ + if (c == '\n') + serial_putc('\r'); +} + +/* + * Test whether a character is in the RX buffer + */ +int serial_tstc_dev(const int dev_index) +{ + struct s5p_uart *const uart = s5p_get_base_uart(dev_index); + + return (int)(readl(&uart->utrstat) & 0x1); +} + +void serial_puts_dev(const char *s, const int dev_index) +{ + while (*s) + serial_putc_dev(*s++, dev_index); +} + +/* Multi serial device functions */ +#define DECLARE_S5P_SERIAL_FUNCTIONS(port) \ +int s5p_serial##port##_init(void) { return serial_init_dev(port); } \ +void s5p_serial##port##_setbrg(void) { serial_setbrg_dev(port); } \ +int s5p_serial##port##_getc(void) { return serial_getc_dev(port); } \ +int s5p_serial##port##_tstc(void) { return serial_tstc_dev(port); } \ +void s5p_serial##port##_putc(const char c) { serial_putc_dev(c, port); } \ +void s5p_serial##port##_puts(const char *s) { serial_puts_dev(s, port); } + +#define INIT_S5P_SERIAL_STRUCTURE(port, name, bus) { \ + name, \ + bus, \ + s5p_serial##port##_init, \ + NULL, \ + s5p_serial##port##_setbrg, \ + s5p_serial##port##_getc, \ + s5p_serial##port##_tstc, \ + s5p_serial##port##_putc, \ + s5p_serial##port##_puts, } + +DECLARE_S5P_SERIAL_FUNCTIONS(0); +struct serial_device s5p_serial0_device = + INIT_S5P_SERIAL_STRUCTURE(0, "s5pser0", "S5PUART0"); +DECLARE_S5P_SERIAL_FUNCTIONS(1); +struct serial_device s5p_serial1_device = + INIT_S5P_SERIAL_STRUCTURE(1, "s5pser1", "S5PUART1"); +DECLARE_S5P_SERIAL_FUNCTIONS(2); +struct serial_device s5p_serial2_device = + INIT_S5P_SERIAL_STRUCTURE(2, "s5pser2", "S5PUART2"); +DECLARE_S5P_SERIAL_FUNCTIONS(3); +struct serial_device s5p_serial3_device = + INIT_S5P_SERIAL_STRUCTURE(3, "s5pser3", "S5PUART3"); diff --git a/drivers/serial/serial_s5pc1xx.c b/drivers/serial/serial_s5pc1xx.c deleted file mode 100644 index 8da0c8606d..0000000000 --- a/drivers/serial/serial_s5pc1xx.c +++ /dev/null @@ -1,206 +0,0 @@ -/* - * (C) Copyright 2009 SAMSUNG Electronics - * Minkyu Kang - * Heungjun Kim - * - * based on drivers/serial/s3c64xx.c - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA - * - */ - -#include -#include -#include -#include -#include - -static inline struct s5pc1xx_uart *s5pc1xx_get_base_uart(int dev_index) -{ - u32 offset = dev_index * sizeof(struct s5pc1xx_uart); - - if (cpu_is_s5pc100()) - return (struct s5pc1xx_uart *)(S5PC100_UART_BASE + offset); - else - return (struct s5pc1xx_uart *)(S5PC110_UART_BASE + offset); -} - -/* - * The coefficient, used to calculate the baudrate on S5PC1XX UARTs is - * calculated as - * C = UBRDIV * 16 + number_of_set_bits_in_UDIVSLOT - * however, section 31.6.11 of the datasheet doesn't recomment using 1 for 1, - * 3 for 2, ... (2^n - 1) for n, instead, they suggest using these constants: - */ -static const int udivslot[] = { - 0, - 0x0080, - 0x0808, - 0x0888, - 0x2222, - 0x4924, - 0x4a52, - 0x54aa, - 0x5555, - 0xd555, - 0xd5d5, - 0xddd5, - 0xdddd, - 0xdfdd, - 0xdfdf, - 0xffdf, -}; - -void serial_setbrg_dev(const int dev_index) -{ - DECLARE_GLOBAL_DATA_PTR; - struct s5pc1xx_uart *const uart = s5pc1xx_get_base_uart(dev_index); - u32 pclk = get_pclk(); - u32 baudrate = gd->baudrate; - u32 val; - - val = pclk / baudrate; - - writel(val / 16 - 1, &uart->ubrdiv); - writew(udivslot[val % 16], &uart->udivslot); -} - -/* - * Initialise the serial port with the given baudrate. The settings - * are always 8 data bits, no parity, 1 stop bit, no start bits. - */ -int serial_init_dev(const int dev_index) -{ - struct s5pc1xx_uart *const uart = s5pc1xx_get_base_uart(dev_index); - - /* reset and enable FIFOs, set triggers to the maximum */ - writel(0, &uart->ufcon); - writel(0, &uart->umcon); - /* 8N1 */ - writel(0x3, &uart->ulcon); - /* No interrupts, no DMA, pure polling */ - writel(0x245, &uart->ucon); - - serial_setbrg_dev(dev_index); - - return 0; -} - -static int serial_err_check(const int dev_index, int op) -{ - struct s5pc1xx_uart *const uart = s5pc1xx_get_base_uart(dev_index); - unsigned int mask; - - /* - * UERSTAT - * Break Detect [3] - * Frame Err [2] : receive operation - * Parity Err [1] : receive operation - * Overrun Err [0] : receive operation - */ - if (op) - mask = 0x8; - else - mask = 0xf; - - return readl(&uart->uerstat) & mask; -} - -/* - * Read a single byte from the serial port. Returns 1 on success, 0 - * otherwise. When the function is succesfull, the character read is - * written into its argument c. - */ -int serial_getc_dev(const int dev_index) -{ - struct s5pc1xx_uart *const uart = s5pc1xx_get_base_uart(dev_index); - - /* wait for character to arrive */ - while (!(readl(&uart->utrstat) & 0x1)) { - if (serial_err_check(dev_index, 0)) - return 0; - } - - return (int)(readl(&uart->urxh) & 0xff); -} - -/* - * Output a single byte to the serial port. - */ -void serial_putc_dev(const char c, const int dev_index) -{ - struct s5pc1xx_uart *const uart = s5pc1xx_get_base_uart(dev_index); - - /* wait for room in the tx FIFO */ - while (!(readl(&uart->utrstat) & 0x2)) { - if (serial_err_check(dev_index, 1)) - return; - } - - writel(c, &uart->utxh); - - /* If \n, also do \r */ - if (c == '\n') - serial_putc('\r'); -} - -/* - * Test whether a character is in the RX buffer - */ -int serial_tstc_dev(const int dev_index) -{ - struct s5pc1xx_uart *const uart = s5pc1xx_get_base_uart(dev_index); - - return (int)(readl(&uart->utrstat) & 0x1); -} - -void serial_puts_dev(const char *s, const int dev_index) -{ - while (*s) - serial_putc_dev(*s++, dev_index); -} - -/* Multi serial device functions */ -#define DECLARE_S5P_SERIAL_FUNCTIONS(port) \ -int s5p_serial##port##_init(void) { return serial_init_dev(port); } \ -void s5p_serial##port##_setbrg(void) { serial_setbrg_dev(port); } \ -int s5p_serial##port##_getc(void) { return serial_getc_dev(port); } \ -int s5p_serial##port##_tstc(void) { return serial_tstc_dev(port); } \ -void s5p_serial##port##_putc(const char c) { serial_putc_dev(c, port); } \ -void s5p_serial##port##_puts(const char *s) { serial_puts_dev(s, port); } - -#define INIT_S5P_SERIAL_STRUCTURE(port, name, bus) { \ - name, \ - bus, \ - s5p_serial##port##_init, \ - NULL, \ - s5p_serial##port##_setbrg, \ - s5p_serial##port##_getc, \ - s5p_serial##port##_tstc, \ - s5p_serial##port##_putc, \ - s5p_serial##port##_puts, } - -DECLARE_S5P_SERIAL_FUNCTIONS(0); -struct serial_device s5pc1xx_serial0_device = - INIT_S5P_SERIAL_STRUCTURE(0, "s5pser0", "S5PUART0"); -DECLARE_S5P_SERIAL_FUNCTIONS(1); -struct serial_device s5pc1xx_serial1_device = - INIT_S5P_SERIAL_STRUCTURE(1, "s5pser1", "S5PUART1"); -DECLARE_S5P_SERIAL_FUNCTIONS(2); -struct serial_device s5pc1xx_serial2_device = - INIT_S5P_SERIAL_STRUCTURE(2, "s5pser2", "S5PUART2"); -DECLARE_S5P_SERIAL_FUNCTIONS(3); -struct serial_device s5pc1xx_serial3_device = - INIT_S5P_SERIAL_STRUCTURE(3, "s5pser3", "S5PUART3"); -- cgit v1.2.1