From: Simon Glass Date: Sun, 31 Jan 2016 16:16:14 +0000 (-0700) Subject: dm: freescale: serial: Drop serial_imx serial driver X-Git-Tag: v2016.03-rc2~73 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=c3dd5787a3d9ae51ef02ddc8d5aecf410c0c1541;p=platform%2Fkernel%2Fu-boot.git 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 Reviewed-by: Tom Rini --- diff --git a/drivers/serial/Makefile b/drivers/serial/Makefile index fa58304..8448449 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-$(CONFIG_IMX_SERIAL) += serial_imx.o obj-$(CONFIG_MAX3100_SERIAL) += serial_max3100.o obj-$(CONFIG_MXC_UART) += serial_mxc.o obj-$(CONFIG_PXA_SERIAL) += serial_pxa.o diff --git a/drivers/serial/serial_imx.c b/drivers/serial/serial_imx.c deleted file mode 100644 index d43a5fe..0000000 --- a/drivers/serial/serial_imx.c +++ /dev/null @@ -1,223 +0,0 @@ -/* - * (c) 2004 Sascha Hauer - * - * SPDX-License-Identifier: GPL-2.0+ - */ - -#include -#include -#include -#include - -#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; -}