This does not appear to be used, and has not been converted to driver model by the deadline (doc/driver-model/serial-howto.txt).
Signed-off-by: Simon Glass sjg@chromium.org ---
drivers/serial/Makefile | 1 - drivers/serial/serial_max3100.c | 294 ---------------------------------------- 2 files changed, 295 deletions(-) delete mode 100644 drivers/serial/serial_max3100.c
diff --git a/drivers/serial/Makefile b/drivers/serial/Makefile index 6d79e46..a1711c6 100644 --- a/drivers/serial/Makefile +++ b/drivers/serial/Makefile @@ -24,7 +24,6 @@ obj-$(CONFIG_LPC32XX_HSUART) += lpc32xx_hsuart.o obj-$(CONFIG_MCFUART) += mcfuart.o obj-$(CONFIG_SYS_NS16550) += ns16550.o obj-$(CONFIG_S5P) += serial_s5p.o -obj-$(CONFIG_MAX3100_SERIAL) += serial_max3100.o obj-$(CONFIG_MXC_UART) += serial_mxc.o obj-$(CONFIG_PXA_SERIAL) += serial_pxa.o obj-$(CONFIG_SA1100_SERIAL) += serial_sa1100.o diff --git a/drivers/serial/serial_max3100.c b/drivers/serial/serial_max3100.c deleted file mode 100644 index 027d919..0000000 --- a/drivers/serial/serial_max3100.c +++ /dev/null @@ -1,294 +0,0 @@ -/* - * (C) Copyright 2003 - * - * Pantelis Antoniou panto@intracom.gr - * Intracom S.A. - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -#include <common.h> -#include <watchdog.h> -#include <serial.h> -#include <linux/compiler.h> - -DECLARE_GLOBAL_DATA_PTR; - -/**************************************************************/ - -/* convienient macros */ -#define MAX3100_SPI_RXD() (MAX3100_SPI_RXD_PORT & MAX3100_SPI_RXD_BIT) - -#define MAX3100_SPI_TXD(x) \ - do { \ - if (x) \ - MAX3100_SPI_TXD_PORT |= MAX3100_SPI_TXD_BIT; \ - else \ - MAX3100_SPI_TXD_PORT &= ~MAX3100_SPI_TXD_BIT; \ - } while(0) - -#define MAX3100_SPI_CLK(x) \ - do { \ - if (x) \ - MAX3100_SPI_CLK_PORT |= MAX3100_SPI_CLK_BIT; \ - else \ - MAX3100_SPI_CLK_PORT &= ~MAX3100_SPI_CLK_BIT; \ - } while(0) - -#define MAX3100_SPI_CLK_TOGGLE() (MAX3100_SPI_CLK_PORT ^= MAX3100_SPI_CLK_BIT) - -#define MAX3100_CS(x) \ - do { \ - if (x) \ - MAX3100_CS_PORT |= MAX3100_CS_BIT; \ - else \ - MAX3100_CS_PORT &= ~MAX3100_CS_BIT; \ - } while(0) - -/**************************************************************/ - -/* MAX3100 definitions */ - -#define MAX3100_WC (3 << 14) /* write configuration */ -#define MAX3100_RC (1 << 14) /* read configuration */ -#define MAX3100_WD (2 << 14) /* write data */ -#define MAX3100_RD (0 << 14) /* read data */ - -/* configuration register bits */ -#define MAX3100_FEN (1 << 13) /* FIFO enable */ -#define MAX3100_SHDN (1 << 12) /* shutdown bit */ -#define MAX3100_TM (1 << 11) /* T bit irq mask */ -#define MAX3100_RM (1 << 10) /* R bit irq mask */ -#define MAX3100_PM (1 << 9) /* P bit irq mask */ -#define MAX3100_RAM (1 << 8) /* mask for RA/FE bit */ -#define MAX3100_IR (1 << 7) /* IRDA timing mode */ -#define MAX3100_ST (1 << 6) /* transmit stop bit */ -#define MAX3100_PE (1 << 5) /* parity enable bit */ -#define MAX3100_L (1 << 4) /* Length bit */ -#define MAX3100_B_MASK (0x000F) /* baud rate bits mask */ -#define MAX3100_B(x) ((x) & 0x000F) /* baud rate select bits */ - -/* data register bits (write) */ -#define MAX3100_TE (1 << 10) /* transmit enable bit (active low) */ -#define MAX3100_RTS (1 << 9) /* request-to-send bit (inverted ~RTS pin) */ - -/* data register bits (read) */ -#define MAX3100_RA (1 << 10) /* receiver activity when in shutdown mode */ -#define MAX3100_FE (1 << 10) /* framing error when in normal mode */ -#define MAX3100_CTS (1 << 9) /* clear-to-send bit (inverted ~CTS pin) */ - -/* data register bits (both directions) */ -#define MAX3100_R (1 << 15) /* receive bit */ -#define MAX3100_T (1 << 14) /* transmit bit */ -#define MAX3100_P (1 << 8) /* parity bit */ -#define MAX3100_D_MASK 0x00FF /* data bits mask */ -#define MAX3100_D(x) ((x) & 0x00FF) /* data bits */ - -/* these definitions are valid only for fOSC = 3.6864MHz */ -#define MAX3100_B_230400 MAX3100_B(0) -#define MAX3100_B_115200 MAX3100_B(1) -#define MAX3100_B_57600 MAX3100_B(2) -#define MAX3100_B_38400 MAX3100_B(9) -#define MAX3100_B_19200 MAX3100_B(10) -#define MAX3100_B_9600 MAX3100_B(11) -#define MAX3100_B_4800 MAX3100_B(12) -#define MAX3100_B_2400 MAX3100_B(13) -#define MAX3100_B_1200 MAX3100_B(14) -#define MAX3100_B_600 MAX3100_B(15) - -/**************************************************************/ - -static inline unsigned int max3100_transfer(unsigned int val) -{ - unsigned int rx; - int b; - - MAX3100_SPI_CLK(0); - MAX3100_CS(0); - - rx = 0; b = 16; - while (--b >= 0) { - MAX3100_SPI_TXD(val & 0x8000); - val <<= 1; - MAX3100_SPI_CLK_TOGGLE(); - udelay(1); - rx <<= 1; - if (MAX3100_SPI_RXD()) - rx |= 1; - MAX3100_SPI_CLK_TOGGLE(); - udelay(1); - } - - MAX3100_SPI_CLK(1); - MAX3100_CS(1); - - return rx; -} - -/**************************************************************/ - -/* must be power of 2 */ -#define RXFIFO_SZ 16 - -static int rxfifo_cnt; -static int rxfifo_in; -static int rxfifo_out; -static unsigned char rxfifo_buf[16]; - -static void max3100_serial_putc_raw(int c) -{ - unsigned int rx; - - while (((rx = max3100_transfer(MAX3100_RC)) & MAX3100_T) == 0) - WATCHDOG_RESET(); - - rx = max3100_transfer(MAX3100_WD | (c & 0xff)); - if ((rx & MAX3100_RD) != 0 && rxfifo_cnt < RXFIFO_SZ) { - rxfifo_cnt++; - rxfifo_buf[rxfifo_in++] = rx & 0xff; - rxfifo_in &= RXFIFO_SZ - 1; - } -} - -static int max3100_serial_getc(void) -{ - int c; - unsigned int rx; - - while (rxfifo_cnt == 0) { - rx = max3100_transfer(MAX3100_RD); - if ((rx & MAX3100_R) != 0) { - do { - rxfifo_cnt++; - rxfifo_buf[rxfifo_in++] = rx & 0xff; - rxfifo_in &= RXFIFO_SZ - 1; - - if (rxfifo_cnt >= RXFIFO_SZ) - break; - } while (((rx = max3100_transfer(MAX3100_RD)) & MAX3100_R) != 0); - } - WATCHDOG_RESET(); - } - - rxfifo_cnt--; - c = rxfifo_buf[rxfifo_out++]; - rxfifo_out &= RXFIFO_SZ - 1; - return c; -} - -static int max3100_serial_tstc(void) -{ - unsigned int rx; - - if (rxfifo_cnt > 0) - return 1; - - rx = max3100_transfer(MAX3100_RD); - if ((rx & MAX3100_R) == 0) - return 0; - - do { - rxfifo_cnt++; - rxfifo_buf[rxfifo_in++] = rx & 0xff; - rxfifo_in &= RXFIFO_SZ - 1; - - if (rxfifo_cnt >= RXFIFO_SZ) - break; - } while (((rx = max3100_transfer(MAX3100_RD)) & MAX3100_R) != 0); - - return 1; -} - -static int max3100_serial_init(void) -{ - unsigned int wconf, rconf; - int i; - - wconf = 0; - - /* Set baud rate */ - switch (gd->baudrate) { - case 1200: - wconf = MAX3100_B_1200; - break; - case 2400: - wconf = MAX3100_B_2400; - break; - case 4800: - wconf = MAX3100_B_4800; - break; - case 9600: - wconf = MAX3100_B_9600; - break; - case 19200: - wconf = MAX3100_B_19200; - break; - case 38400: - wconf = MAX3100_B_38400; - break; - case 57600: - wconf = MAX3100_B_57600; - break; - default: - case 115200: - wconf = MAX3100_B_115200; - break; - case 230400: - wconf = MAX3100_B_230400; - break; - } - - /* try for 10ms, with a 100us gap */ - for (i = 0; i < 10000; i += 100) { - - max3100_transfer(MAX3100_WC | wconf); - rconf = max3100_transfer(MAX3100_RC) & 0x3fff; - - if (rconf == wconf) - break; - udelay(100); - } - - rxfifo_in = rxfifo_out = rxfifo_cnt = 0; - - return (0); -} - -static void max3100_serial_putc(const char c) -{ - if (c == '\n') - max3100_serial_putc_raw('\r'); - - max3100_serial_putc_raw(c); -} - -static void max3100_serial_puts(const char *s) -{ - while (*s) - max3100_serial_putc_raw(*s++); -} - -static void max3100_serial_setbrg(void) -{ -} - -static struct serial_device max3100_serial_drv = { - .name = "max3100_serial", - .start = max3100_serial_init, - .stop = NULL, - .setbrg = max3100_serial_setbrg, - .putc = max3100_serial_putc, - .puts = max3100_serial_puts, - .getc = max3100_serial_getc, - .tstc = max3100_serial_tstc, -}; - -void max3100_serial_initialize(void) -{ - serial_register(&max3100_serial_drv); -} - -__weak struct serial_device *default_serial_console(void) -{ - return &max3100_serial_drv; -}