[U-Boot] [PATCH 1/6] dm: freescale: Drop mxs_auart serial driver

Simon Glass sjg at chromium.org
Sun Jan 31 17:16:12 CET 2016 

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 at chromium.org>
---

 drivers/serial/Makefile    |   1 -
 drivers/serial/mxs_auart.c | 151 ---------------------------------------------
 include/configs/mxs.h      |   2 -
 3 files changed, 154 deletions(-)
 delete mode 100644 drivers/serial/mxs_auart.c

diff --git a/drivers/serial/Makefile b/drivers/serial/Makefile
index dd87147..3ce3ab6 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 fc0fa96..0000000
--- 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 at dalelven.com>
- *
- * Based on the MXC serial driver:
- *
- * (c) 2007 Sascha Hauer <s.hauer at 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;
-}
diff --git a/include/configs/mxs.h b/include/configs/mxs.h
index 63fdf9e..4c490ae 100644
--- a/include/configs/mxs.h
+++ b/include/configs/mxs.h
@@ -121,12 +121,10 @@
  * DUART Serial Driver.
  * Conflicts with AUART driver which can be set by board.
  */
-#ifndef CONFIG_MXS_AUART
 #define CONFIG_PL011_SERIAL
 #define CONFIG_PL011_CLOCK		24000000
 #define CONFIG_PL01x_PORTS		{ (void *)MXS_UARTDBG_BASE }
 #define CONFIG_CONS_INDEX		0
-#endif
 /* Default baudrate can be overriden by board! */
 #ifndef CONFIG_BAUDRATE
 #define CONFIG_BAUDRATE			115200
-- 
2.7.0.rc3.207.g0ac5344

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