mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-28 15:41:40 +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
|
|
@ -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-$(CONFIG_IMX_SERIAL) += serial_imx.o
|
||||
obj-$(CONFIG_MAX3100_SERIAL) += serial_max3100.o
|
||||
obj-$(CONFIG_MXC_UART) += serial_mxc.o
|
||||
obj-$(CONFIG_PXA_SERIAL) += serial_pxa.o
|
||||
|
|
|
|||
|
|
@ -1,223 +0,0 @@
|
|||
/*
|
||||
* (c) 2004 Sascha Hauer <sascha@saschahauer.de>
|
||||
*
|
||||
* SPDX-License-Identifier: GPL-2.0+
|
||||
*/
|
||||
|
||||
#include <common.h>
|
||||
#include <asm/arch/imx-regs.h>
|
||||
#include <serial.h>
|
||||
#include <linux/compiler.h>
|
||||
|
||||
#if defined CONFIG_IMX_SERIAL1
|
||||
#define UART_BASE IMX_UART1_BASE
|
||||
#elif defined CONFIG_IMX_SERIAL2
|
||||
#define UART_BASE IMX_UART2_BASE
|
||||
#else
|
||||
#error "define CONFIG_IMX_SERIAL1, CONFIG_IMX_SERIAL2 or CONFIG_IMX_SERIAL_NONE"
|
||||
#endif
|
||||
|
||||
struct imx_serial {
|
||||
volatile uint32_t urxd[16];
|
||||
volatile uint32_t utxd[16];
|
||||
volatile uint32_t ucr1;
|
||||
volatile uint32_t ucr2;
|
||||
volatile uint32_t ucr3;
|
||||
volatile uint32_t ucr4;
|
||||
volatile uint32_t ufcr;
|
||||
volatile uint32_t usr1;
|
||||
volatile uint32_t usr2;
|
||||
volatile uint32_t uesc;
|
||||
volatile uint32_t utim;
|
||||
volatile uint32_t ubir;
|
||||
volatile uint32_t ubmr;
|
||||
volatile uint32_t ubrc;
|
||||
volatile uint32_t bipr[4];
|
||||
volatile uint32_t bmpr[4];
|
||||
volatile uint32_t uts;
|
||||
};
|
||||
|
||||
DECLARE_GLOBAL_DATA_PTR;
|
||||
|
||||
static void imx_serial_setbrg(void)
|
||||
{
|
||||
serial_init();
|
||||
}
|
||||
|
||||
extern void imx_gpio_mode(int gpio_mode);
|
||||
|
||||
/*
|
||||
* Initialise the serial port with the given baudrate. The settings
|
||||
* are always 8 data bits, no parity, 1 stop bit, no start bits.
|
||||
*
|
||||
*/
|
||||
static int imx_serial_init(void)
|
||||
{
|
||||
volatile struct imx_serial* base = (struct imx_serial *)UART_BASE;
|
||||
unsigned int ufcr_rfdiv;
|
||||
unsigned int refclk;
|
||||
|
||||
#ifdef CONFIG_IMX_SERIAL1
|
||||
imx_gpio_mode(PC11_PF_UART1_TXD);
|
||||
imx_gpio_mode(PC12_PF_UART1_RXD);
|
||||
#else
|
||||
imx_gpio_mode(PB30_PF_UART2_TXD);
|
||||
imx_gpio_mode(PB31_PF_UART2_RXD);
|
||||
#endif
|
||||
|
||||
/* Disable UART */
|
||||
base->ucr1 &= ~UCR1_UARTEN;
|
||||
|
||||
/* Set to default POR state */
|
||||
|
||||
base->ucr1 = 0x00000004;
|
||||
base->ucr2 = 0x00000000;
|
||||
base->ucr3 = 0x00000000;
|
||||
base->ucr4 = 0x00008040;
|
||||
base->uesc = 0x0000002B;
|
||||
base->utim = 0x00000000;
|
||||
base->ubir = 0x00000000;
|
||||
base->ubmr = 0x00000000;
|
||||
base->uts = 0x00000000;
|
||||
/* Set clocks */
|
||||
base->ucr4 |= UCR4_REF16;
|
||||
|
||||
/* Configure FIFOs */
|
||||
base->ufcr = 0xa81;
|
||||
|
||||
/* set the baud rate.
|
||||
*
|
||||
* baud * 16 x
|
||||
* --------- = -
|
||||
* refclk y
|
||||
*
|
||||
* x - 1 = UBIR
|
||||
* y - 1 = UBMR
|
||||
*
|
||||
* each register is 16 bits wide. refclk max is 96 MHz
|
||||
*
|
||||
*/
|
||||
|
||||
ufcr_rfdiv = ((base->ufcr) & UFCR_RFDIV) >> 7;
|
||||
if (ufcr_rfdiv == 6)
|
||||
ufcr_rfdiv = 7;
|
||||
else
|
||||
ufcr_rfdiv = 6 - ufcr_rfdiv;
|
||||
|
||||
refclk = get_PERCLK1();
|
||||
refclk /= ufcr_rfdiv;
|
||||
|
||||
/* Set the numerator value minus one of the BRM ratio */
|
||||
base->ubir = (gd->baudrate / 100) - 1;
|
||||
|
||||
/* Set the denominator value minus one of the BRM ratio */
|
||||
base->ubmr = (refclk/(16 * 100)) - 1;
|
||||
|
||||
/* Set to 8N1 */
|
||||
base->ucr2 &= ~UCR2_PREN;
|
||||
base->ucr2 |= UCR2_WS;
|
||||
base->ucr2 &= ~UCR2_STPB;
|
||||
|
||||
/* Ignore RTS */
|
||||
base->ucr2 |= UCR2_IRTS;
|
||||
|
||||
/* Enable UART */
|
||||
base->ucr1 |= UCR1_UARTEN | UCR1_UARTCLKEN;
|
||||
|
||||
/* Enable FIFOs */
|
||||
base->ucr2 |= UCR2_SRST | UCR2_RXEN | UCR2_TXEN;
|
||||
|
||||
/* Clear status flags */
|
||||
base->usr2 |= USR2_ADET |
|
||||
USR2_DTRF |
|
||||
USR2_IDLE |
|
||||
USR2_IRINT |
|
||||
USR2_WAKE |
|
||||
USR2_RTSF |
|
||||
USR2_BRCD |
|
||||
USR2_ORE;
|
||||
|
||||
/* Clear status flags */
|
||||
base->usr1 |= USR1_PARITYERR |
|
||||
USR1_RTSD |
|
||||
USR1_ESCF |
|
||||
USR1_FRAMERR |
|
||||
USR1_AIRINT |
|
||||
USR1_AWAKE;
|
||||
return (0);
|
||||
}
|
||||
|
||||
/*
|
||||
* Read a single byte from the serial port. Returns 1 on success, 0
|
||||
* otherwise. When the function is successful, the character read is
|
||||
* written into its argument c.
|
||||
*/
|
||||
static int imx_serial_getc(void)
|
||||
{
|
||||
volatile struct imx_serial* base = (struct imx_serial *)UART_BASE;
|
||||
unsigned char ch;
|
||||
|
||||
while(base->uts & UTS_RXEMPTY);
|
||||
|
||||
ch = (char)base->urxd[0];
|
||||
|
||||
return ch;
|
||||
}
|
||||
|
||||
#ifdef CONFIG_HWFLOW
|
||||
static int hwflow = 0; /* turned off by default */
|
||||
int hwflow_onoff(int on)
|
||||
{
|
||||
}
|
||||
#endif
|
||||
|
||||
/*
|
||||
* Output a single byte to the serial port.
|
||||
*/
|
||||
static void imx_serial_putc(const char c)
|
||||
{
|
||||
volatile struct imx_serial* base = (struct imx_serial *)UART_BASE;
|
||||
|
||||
/* Wait for Tx FIFO not full */
|
||||
while (base->uts & UTS_TXFULL);
|
||||
|
||||
base->utxd[0] = c;
|
||||
|
||||
/* If \n, also do \r */
|
||||
if (c == '\n')
|
||||
serial_putc ('\r');
|
||||
}
|
||||
|
||||
/*
|
||||
* Test whether a character is in the RX buffer
|
||||
*/
|
||||
static int imx_serial_tstc(void)
|
||||
{
|
||||
volatile struct imx_serial* base = (struct imx_serial *)UART_BASE;
|
||||
|
||||
/* If receive fifo is empty, return false */
|
||||
if (base->uts & UTS_RXEMPTY)
|
||||
return 0;
|
||||
return 1;
|
||||
}
|
||||
|
||||
static struct serial_device imx_serial_drv = {
|
||||
.name = "imx_serial",
|
||||
.start = imx_serial_init,
|
||||
.stop = NULL,
|
||||
.setbrg = imx_serial_setbrg,
|
||||
.putc = imx_serial_putc,
|
||||
.puts = default_serial_puts,
|
||||
.getc = imx_serial_getc,
|
||||
.tstc = imx_serial_tstc,
|
||||
};
|
||||
|
||||
void imx_serial_initialize(void)
|
||||
{
|
||||
serial_register(&imx_serial_drv);
|
||||
}
|
||||
|
||||
__weak struct serial_device *default_serial_console(void)
|
||||
{
|
||||
return &imx_serial_drv;
|
||||
}
|
||||
Loading…
Reference in a new issue