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https://github.com/AsahiLinux/u-boot
synced 2024-11-10 23:24:38 +00:00
dm: freescale: serial: Drop serial_imx serial driver
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> Reviewed-by: Tom Rini <trini@konsulko.com>
This commit is contained in:
Simon Glass
Tom Rini
parent
be479339bd
commit
c3dd5787a3
2 changed files with 0 additions and 224 deletions
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@ -24,7 +24,6 @@ obj-$(CONFIG_LPC32XX_HSUART) += lpc32xx_hsuart.o
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obj-$(CONFIG_MCFUART) += mcfuart.o
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obj-$(CONFIG_SYS_NS16550) += ns16550.o
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obj-$(CONFIG_S5P) += serial_s5p.o
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obj-$(CONFIG_IMX_SERIAL) += serial_imx.o
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obj-$(CONFIG_MAX3100_SERIAL) += serial_max3100.o
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obj-$(CONFIG_MXC_UART) += serial_mxc.o
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obj-$(CONFIG_PXA_SERIAL) += serial_pxa.o
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@ -1,223 +0,0 @@
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/*
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* (c) 2004 Sascha Hauer <sascha@saschahauer.de>
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#include <common.h>
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#include <asm/arch/imx-regs.h>
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#include <serial.h>
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#include <linux/compiler.h>
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#if defined CONFIG_IMX_SERIAL1
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#define UART_BASE IMX_UART1_BASE
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#elif defined CONFIG_IMX_SERIAL2
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#define UART_BASE IMX_UART2_BASE
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#else
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#error "define CONFIG_IMX_SERIAL1, CONFIG_IMX_SERIAL2 or CONFIG_IMX_SERIAL_NONE"
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#endif
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struct imx_serial {
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volatile uint32_t urxd[16];
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volatile uint32_t utxd[16];
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volatile uint32_t ucr1;
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volatile uint32_t ucr2;
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volatile uint32_t ucr3;
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volatile uint32_t ucr4;
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volatile uint32_t ufcr;
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volatile uint32_t usr1;
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volatile uint32_t usr2;
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volatile uint32_t uesc;
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volatile uint32_t utim;
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volatile uint32_t ubir;
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volatile uint32_t ubmr;
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volatile uint32_t ubrc;
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volatile uint32_t bipr[4];
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volatile uint32_t bmpr[4];
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volatile uint32_t uts;
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};
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DECLARE_GLOBAL_DATA_PTR;
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static void imx_serial_setbrg(void)
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{
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serial_init();
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}
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extern void imx_gpio_mode(int gpio_mode);
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/*
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* Initialise the serial port with the given baudrate. The settings
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* are always 8 data bits, no parity, 1 stop bit, no start bits.
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*
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*/
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static int imx_serial_init(void)
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{
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volatile struct imx_serial* base = (struct imx_serial *)UART_BASE;
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unsigned int ufcr_rfdiv;
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unsigned int refclk;
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#ifdef CONFIG_IMX_SERIAL1
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imx_gpio_mode(PC11_PF_UART1_TXD);
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imx_gpio_mode(PC12_PF_UART1_RXD);
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#else
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imx_gpio_mode(PB30_PF_UART2_TXD);
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imx_gpio_mode(PB31_PF_UART2_RXD);
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#endif
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/* Disable UART */
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base->ucr1 &= ~UCR1_UARTEN;
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/* Set to default POR state */
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base->ucr1 = 0x00000004;
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base->ucr2 = 0x00000000;
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base->ucr3 = 0x00000000;
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base->ucr4 = 0x00008040;
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base->uesc = 0x0000002B;
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base->utim = 0x00000000;
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base->ubir = 0x00000000;
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base->ubmr = 0x00000000;
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base->uts = 0x00000000;
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/* Set clocks */
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base->ucr4 |= UCR4_REF16;
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/* Configure FIFOs */
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base->ufcr = 0xa81;
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/* set the baud rate.
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*
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* baud * 16 x
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* --------- = -
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* refclk y
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*
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* x - 1 = UBIR
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* y - 1 = UBMR
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*
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* each register is 16 bits wide. refclk max is 96 MHz
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*
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*/
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ufcr_rfdiv = ((base->ufcr) & UFCR_RFDIV) >> 7;
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if (ufcr_rfdiv == 6)
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ufcr_rfdiv = 7;
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else
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ufcr_rfdiv = 6 - ufcr_rfdiv;
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refclk = get_PERCLK1();
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refclk /= ufcr_rfdiv;
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/* Set the numerator value minus one of the BRM ratio */
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base->ubir = (gd->baudrate / 100) - 1;
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/* Set the denominator value minus one of the BRM ratio */
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base->ubmr = (refclk/(16 * 100)) - 1;
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/* Set to 8N1 */
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base->ucr2 &= ~UCR2_PREN;
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base->ucr2 |= UCR2_WS;
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base->ucr2 &= ~UCR2_STPB;
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/* Ignore RTS */
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base->ucr2 |= UCR2_IRTS;
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/* Enable UART */
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base->ucr1 |= UCR1_UARTEN | UCR1_UARTCLKEN;
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/* Enable FIFOs */
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base->ucr2 |= UCR2_SRST | UCR2_RXEN | UCR2_TXEN;
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/* Clear status flags */
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base->usr2 |= USR2_ADET |
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USR2_DTRF |
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USR2_IDLE |
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USR2_IRINT |
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USR2_WAKE |
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USR2_RTSF |
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USR2_BRCD |
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USR2_ORE;
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/* Clear status flags */
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base->usr1 |= USR1_PARITYERR |
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USR1_RTSD |
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USR1_ESCF |
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USR1_FRAMERR |
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USR1_AIRINT |
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USR1_AWAKE;
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return (0);
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}
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/*
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* Read a single byte from the serial port. Returns 1 on success, 0
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* otherwise. When the function is successful, the character read is
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* written into its argument c.
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*/
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static int imx_serial_getc(void)
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{
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volatile struct imx_serial* base = (struct imx_serial *)UART_BASE;
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unsigned char ch;
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while(base->uts & UTS_RXEMPTY);
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ch = (char)base->urxd[0];
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return ch;
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}
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#ifdef CONFIG_HWFLOW
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static int hwflow = 0; /* turned off by default */
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int hwflow_onoff(int on)
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{
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}
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#endif
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/*
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* Output a single byte to the serial port.
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*/
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static void imx_serial_putc(const char c)
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{
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volatile struct imx_serial* base = (struct imx_serial *)UART_BASE;
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/* Wait for Tx FIFO not full */
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while (base->uts & UTS_TXFULL);
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base->utxd[0] = c;
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/* If \n, also do \r */
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if (c == '\n')
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serial_putc ('\r');
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}
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/*
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* Test whether a character is in the RX buffer
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*/
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static int imx_serial_tstc(void)
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{
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volatile struct imx_serial* base = (struct imx_serial *)UART_BASE;
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/* If receive fifo is empty, return false */
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if (base->uts & UTS_RXEMPTY)
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return 0;
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return 1;
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}
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static struct serial_device imx_serial_drv = {
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.name = "imx_serial",
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.start = imx_serial_init,
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.stop = NULL,
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.setbrg = imx_serial_setbrg,
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.putc = imx_serial_putc,
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.puts = default_serial_puts,
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.getc = imx_serial_getc,
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.tstc = imx_serial_tstc,
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};
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void imx_serial_initialize(void)
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{
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serial_register(&imx_serial_drv);
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}
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__weak struct serial_device *default_serial_console(void)
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{
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return &imx_serial_drv;
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}
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