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authorSimon Glass <sjg@chromium.org>2016-01-31 09:16:12 -0700
committerTom Rini <trini@konsulko.com>2016-02-08 10:10:40 -0500
commitbaf7125acab7d7b56cf4e623d2a2b1204518bd37 (patch)
tree566a396753cfd79940ab7e32b35040ddd7195ed3 /drivers/serial
parent2cd1ff84037a77f2d967e3331dcc9adc36cded2b (diff)
downloadblackbird-obmc-uboot-baf7125acab7d7b56cf4e623d2a2b1204518bd37.tar.gz
blackbird-obmc-uboot-baf7125acab7d7b56cf4e623d2a2b1204518bd37.zip
dm: freescale: Drop mxs_auart 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>
Diffstat (limited to 'drivers/serial')
-rw-r--r--drivers/serial/Makefile1
-rw-r--r--drivers/serial/mxs_auart.c151
2 files changed, 0 insertions, 152 deletions
diff --git a/drivers/serial/Makefile b/drivers/serial/Makefile
index 57cd38bf6e..cc4aa35912 100644
--- a/drivers/serial/Makefile
+++ b/drivers/serial/Makefile
@@ -37,7 +37,6 @@ obj-$(CONFIG_SCIF_CONSOLE) += serial_sh.o
obj-$(CONFIG_ZYNQ_SERIAL) += serial_zynq.o
obj-$(CONFIG_BFIN_SERIAL) += serial_bfin.o
obj-$(CONFIG_FSL_LPUART) += serial_lpuart.o
-obj-$(CONFIG_MXS_AUART) += mxs_auart.o
obj-$(CONFIG_ARC_SERIAL) += serial_arc.o
obj-$(CONFIG_UNIPHIER_SERIAL) += serial_uniphier.o
obj-$(CONFIG_STM32_SERIAL) += serial_stm32.o
diff --git a/drivers/serial/mxs_auart.c b/drivers/serial/mxs_auart.c
deleted file mode 100644
index fc0fa96a0e..0000000000
--- a/drivers/serial/mxs_auart.c
+++ /dev/null
@@ -1,151 +0,0 @@
-/*
- * Freescale i.MX23/i.MX28 AUART driver
- *
- * Copyright (C) 2013 Andreas Wass <andreas.wass@dalelven.com>
- *
- * Based on the MXC serial driver:
- *
- * (c) 2007 Sascha Hauer <s.hauer@pengutronix.de>
- *
- * Further based on the Linux mxs-auart.c driver:
- *
- * Freescale STMP37XX/STMP38X Application UART drkiver
- * Copyright 2008-2010 Freescale Semiconductor, Inc.
- *
- * SPDX-License-Identifier: GPL-2.0+
- */
-#include <common.h>
-#include <asm/io.h>
-#include <serial.h>
-#include <linux/compiler.h>
-#include <asm/arch/regs-base.h>
-#include <asm/arch/regs-uartapp.h>
-#include <asm/arch/sys_proto.h>
-
-DECLARE_GLOBAL_DATA_PTR;
-
-#ifndef CONFIG_MXS_AUART_BASE
-#error "CONFIG_MXS_AUART_BASE must be set to the base UART to use"
-#endif
-
-/* AUART clock always supplied by XTAL and always 24MHz */
-#define MXS_AUART_CLK 24000000
-
-static struct mxs_uartapp_regs *get_uartapp_registers(void)
-{
- return (struct mxs_uartapp_regs *)CONFIG_MXS_AUART_BASE;
-}
-
-/**
- * Sets the baud rate and settings.
- * The settings are: 8 data bits, no parit and 1 stop bit.
- */
-static void mxs_auart_setbrg(void)
-{
- u32 div;
- u32 linectrl = 0;
- struct mxs_uartapp_regs *regs = get_uartapp_registers();
-
- if (!gd->baudrate)
- gd->baudrate = CONFIG_BAUDRATE;
-
- /*
- * From i.MX28 datasheet:
- * div is calculated by calculating UARTCLK*32/baudrate, rounded to int
- * div must be between 0xEC and 0x003FFFC0 inclusive
- * Lowest 6 bits of div goes in BAUD_DIVFRAC part of LINECTRL register
- * Next 16 bits goes in BAUD_DIVINT part of LINECTRL register
- */
- div = (MXS_AUART_CLK * 32) / gd->baudrate;
- if (div < 0xEC || div > 0x003FFFC0)
- return;
-
- linectrl |= ((div & UARTAPP_LINECTRL_EXTRACT_BAUD_DIVFRAC_MASK) <<
- UARTAPP_LINECTRL_BAUD_DIVFRAC_OFFSET) &
- UARTAPP_LINECTRL_BAUD_DIVFRAC_MASK;
- linectrl |= ((div >> UARTAPP_LINECTRL_EXTRACT_BAUD_DIVINT_OFFSET) <<
- UARTAPP_LINECTRL_BAUD_DIVINT_OFFSET) &
- UARTAPP_LINECTRL_BAUD_DIVINT_MASK;
-
- /* Word length: 8 bits */
- linectrl |= UARTAPP_LINECTRL_WLEN_8BITS;
-
- /* Enable FIFOs. */
- linectrl |= UARTAPP_LINECTRL_FEN_MASK;
-
- /* Write above settings, no parity, 1 stop bit */
- writel(linectrl, &regs->hw_uartapp_linectrl);
-}
-
-static int mxs_auart_init(void)
-{
- struct mxs_uartapp_regs *regs = get_uartapp_registers();
- /* Reset everything */
- mxs_reset_block(&regs->hw_uartapp_ctrl0_reg);
- /* Disable interrupts */
- writel(0, &regs->hw_uartapp_intr);
- /* Set baud rate and settings */
- serial_setbrg();
- /* Disable RTS and CTS, ignore LINECTRL2 register */
- writel(UARTAPP_CTRL2_RTSEN_MASK |
- UARTAPP_CTRL2_CTSEN_MASK |
- UARTAPP_CTRL2_USE_LCR2_MASK,
- &regs->hw_uartapp_ctrl2_clr);
- /* Enable receiver, transmitter and UART */
- writel(UARTAPP_CTRL2_RXE_MASK |
- UARTAPP_CTRL2_TXE_MASK |
- UARTAPP_CTRL2_UARTEN_MASK,
- &regs->hw_uartapp_ctrl2_set);
- return 0;
-}
-
-static void mxs_auart_putc(const char c)
-{
- struct mxs_uartapp_regs *regs = get_uartapp_registers();
- /* Wait in loop while the transmit FIFO is full */
- while (readl(&regs->hw_uartapp_stat) & UARTAPP_STAT_TXFF_MASK)
- ;
-
- writel(c, &regs->hw_uartapp_data);
-
- if (c == '\n')
- mxs_auart_putc('\r');
-}
-
-static int mxs_auart_tstc(void)
-{
- struct mxs_uartapp_regs *regs = get_uartapp_registers();
- /* Checks if receive FIFO is empty */
- return !(readl(&regs->hw_uartapp_stat) & UARTAPP_STAT_RXFE_MASK);
-}
-
-static int mxs_auart_getc(void)
-{
- struct mxs_uartapp_regs *regs = get_uartapp_registers();
- /* Wait until a character is available to read */
- while (!mxs_auart_tstc())
- ;
- /* Read the character from the data register */
- return readl(&regs->hw_uartapp_data) & 0xFF;
-}
-
-static struct serial_device mxs_auart_drv = {
- .name = "mxs_auart_serial",
- .start = mxs_auart_init,
- .stop = NULL,
- .setbrg = mxs_auart_setbrg,
- .putc = mxs_auart_putc,
- .puts = default_serial_puts,
- .getc = mxs_auart_getc,
- .tstc = mxs_auart_tstc,
-};
-
-void mxs_auart_initialize(void)
-{
- serial_register(&mxs_auart_drv);
-}
-
-__weak struct serial_device *default_serial_console(void)
-{
- return &mxs_auart_drv;
-}
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