serial: bcm6858: remove driver and switch to bcm6345

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>

3 files changed, 1 insertions, 308 deletions

diff --git a/drivers/serial/Kconfig b/drivers/serial/Kconfig
index 3bcc61e731..6252dd8c4b 100644
--- a/drivers/serial/Kconfig
+++ b/drivers/serial/Kconfig
@@ -506,16 +506,10 @@ config BCM283X_PL011_SERIAL
 
 config BCM6345_SERIAL
 	bool "Support for BCM6345 UART"
-	depends on DM_SERIAL && ARCH_BMIPS
+	depends on DM_SERIAL
 	help
 	  Select this to enable UART on BCM6345 SoCs.
 
-config BCM6858_SERIAL
-	bool "Support for BCM6858 UART"
-	depends on DM_SERIAL && ARCH_BCM6858
-	help
-	  Select this to enable UART on BCM6358 SoCs.
-
 config FSL_LINFLEXUART
 	bool "Freescale Linflex UART support"
 	depends on DM_SERIAL
diff --git a/drivers/serial/Makefile b/drivers/serial/Makefile
index b6377b1076..2f8d065a4c 100644
--- a/drivers/serial/Makefile
+++ b/drivers/serial/Makefile
@@ -35,7 +35,6 @@ obj-$(CONFIG_AR933X_UART) += serial_ar933x.o
 obj-$(CONFIG_ARM_DCC) += arm_dcc.o
 obj-$(CONFIG_ATMEL_USART) += atmel_usart.o
 obj-$(CONFIG_BCM6345_SERIAL) += serial_bcm6345.o
-obj-$(CONFIG_BCM6858_SERIAL) += serial_bcm6858.o
 obj-$(CONFIG_EFI_APP) += serial_efi.o
 obj-$(CONFIG_LPC32XX_HSUART) += lpc32xx_hsuart.o
 obj-$(CONFIG_MCFUART) += mcfuart.o
diff --git a/drivers/serial/serial_bcm6858.c b/drivers/serial/serial_bcm6858.c
deleted file mode 100644
index 8aa37055f0..0000000000
--- a/drivers/serial/serial_bcm6858.c
+++ /dev/null
@@ -1,300 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0+
-/*
- * Copyright (C) 2018 Philippe Reynes <philippe.reynes@softathome.com>
- *
- * Derived from linux/drivers/tty/serial/bcm63xx_uart.c:
- *	Copyright (C) 2008 Maxime Bizon <mbizon@freebox.fr>
- * Derived from linux/drivers/tty/serial/serial_bcm6345.c
- *	Copyright (C) 2017 Álvaro Fernández Rojas <noltari@gmail.com>
- */
-
-#include <clk.h>
-#include <dm.h>
-#include <debug_uart.h>
-#include <errno.h>
-#include <serial.h>
-#include <asm/io.h>
-#include <asm/types.h>
-
-/* UART Control register */
-#define UART_CTL_REG			0x0
-#define UART_CTL_RXTIMEOUT_MASK		0x1f
-#define UART_CTL_RXTIMEOUT_5		0x5
-#define UART_CTL_RSTRXFIFO_SHIFT	6
-#define UART_CTL_RSTRXFIFO_MASK		(1 << UART_CTL_RSTRXFIFO_SHIFT)
-#define UART_CTL_RSTTXFIFO_SHIFT	7
-#define UART_CTL_RSTTXFIFO_MASK		(1 << UART_CTL_RSTTXFIFO_SHIFT)
-#define UART_CTL_STOPBITS_SHIFT		8
-#define UART_CTL_STOPBITS_MASK		(0xf << UART_CTL_STOPBITS_SHIFT)
-#define UART_CTL_STOPBITS_1		(0x7 << UART_CTL_STOPBITS_SHIFT)
-#define UART_CTL_BITSPERSYM_SHIFT	12
-#define UART_CTL_BITSPERSYM_MASK	(0x3 << UART_CTL_BITSPERSYM_SHIFT)
-#define UART_CTL_BITSPERSYM_8		(0x3 << UART_CTL_BITSPERSYM_SHIFT)
-#define UART_CTL_XMITBRK_SHIFT		14
-#define UART_CTL_XMITBRK_MASK		(1 << UART_CTL_XMITBRK_SHIFT)
-#define UART_CTL_RSVD_SHIFT		15
-#define UART_CTL_RSVD_MASK		(1 << UART_CTL_RSVD_SHIFT)
-#define UART_CTL_RXPAREVEN_SHIFT	16
-#define UART_CTL_RXPAREVEN_MASK		(1 << UART_CTL_RXPAREVEN_SHIFT)
-#define UART_CTL_RXPAREN_SHIFT		17
-#define UART_CTL_RXPAREN_MASK		(1 << UART_CTL_RXPAREN_SHIFT)
-#define UART_CTL_TXPAREVEN_SHIFT	18
-#define UART_CTL_TXPAREVEN_MASK		(1 << UART_CTL_TXPAREVEN_SHIFT)
-#define UART_CTL_TXPAREN_SHIFT		19
-#define UART_CTL_TXPAREN_MASK		(1 << UART_CTL_TXPAREN_SHIFT)
-#define UART_CTL_LOOPBACK_SHIFT		20
-#define UART_CTL_LOOPBACK_MASK		(1 << UART_CTL_LOOPBACK_SHIFT)
-#define UART_CTL_RXEN_SHIFT		21
-#define UART_CTL_RXEN_MASK		(1 << UART_CTL_RXEN_SHIFT)
-#define UART_CTL_TXEN_SHIFT		22
-#define UART_CTL_TXEN_MASK		(1 << UART_CTL_TXEN_SHIFT)
-#define UART_CTL_BRGEN_SHIFT		23
-#define UART_CTL_BRGEN_MASK		(1 << UART_CTL_BRGEN_SHIFT)
-
-/* UART Baudword register */
-#define UART_BAUD_REG			0x4
-
-/* UART FIFO Config register */
-#define UART_FIFO_CFG_REG		0x8
-#define UART_FIFO_CFG_RX_SHIFT		8
-#define UART_FIFO_CFG_RX_MASK		(0xf << UART_FIFO_CFG_RX_SHIFT)
-#define UART_FIFO_CFG_RX_4		(0x4 << UART_FIFO_CFG_RX_SHIFT)
-#define UART_FIFO_CFG_TX_SHIFT		12
-#define UART_FIFO_CFG_TX_MASK		(0xf << UART_FIFO_CFG_TX_SHIFT)
-#define UART_FIFO_CFG_TX_4		(0x4 << UART_FIFO_CFG_TX_SHIFT)
-
-/* UART Interrupt register */
-#define UART_IR_REG			0x10
-#define UART_IR_STAT(x)			(1 << (x))
-#define UART_IR_TXEMPTY			5
-#define UART_IR_RXOVER			7
-#define UART_IR_RXNOTEMPTY		11
-
-/* UART FIFO register */
-#define UART_FIFO_REG			0x14
-#define UART_FIFO_VALID_MASK		0xff
-#define UART_FIFO_FRAMEERR_SHIFT	8
-#define UART_FIFO_FRAMEERR_MASK		(1 << UART_FIFO_FRAMEERR_SHIFT)
-#define UART_FIFO_PARERR_SHIFT		9
-#define UART_FIFO_PARERR_MASK		(1 << UART_FIFO_PARERR_SHIFT)
-#define UART_FIFO_BRKDET_SHIFT		10
-#define UART_FIFO_BRKDET_MASK		(1 << UART_FIFO_BRKDET_SHIFT)
-#define UART_FIFO_ANYERR_MASK		(UART_FIFO_FRAMEERR_MASK |	\
-					UART_FIFO_PARERR_MASK |		\
-					UART_FIFO_BRKDET_MASK)
-
-struct bcm6858_serial_priv {
-	void __iomem *base;
-	ulong uartclk;
-};
-
-/* enable rx & tx operation on uart */
-static void bcm6858_serial_enable(void __iomem *base)
-{
-	setbits_le32(base + UART_CTL_REG, UART_CTL_BRGEN_MASK |
-		     UART_CTL_TXEN_MASK | UART_CTL_RXEN_MASK);
-}
-
-/* disable rx & tx operation on uart */
-static void bcm6858_serial_disable(void __iomem *base)
-{
-	clrbits_le32(base + UART_CTL_REG, UART_CTL_BRGEN_MASK |
-		     UART_CTL_TXEN_MASK | UART_CTL_RXEN_MASK);
-}
-
-/* clear all unread data in rx fifo and unsent data in tx fifo */
-static void bcm6858_serial_flush(void __iomem *base)
-{
-	/* empty rx and tx fifo */
-	setbits_le32(base + UART_CTL_REG, UART_CTL_RSTRXFIFO_MASK |
-		     UART_CTL_RSTTXFIFO_MASK);
-
-	/* read any pending char to make sure all irq status are cleared */
-	readl(base + UART_FIFO_REG);
-}
-
-static int bcm6858_serial_init(void __iomem *base, ulong clk, u32 baudrate)
-{
-	u32 val;
-
-	/* mask all irq and flush port */
-	bcm6858_serial_disable(base);
-	bcm6858_serial_flush(base);
-
-	/* set uart control config */
-	clrsetbits_le32(base + UART_CTL_REG,
-			/* clear rx timeout */
-			UART_CTL_RXTIMEOUT_MASK |
-			/* clear stop bits */
-			UART_CTL_STOPBITS_MASK |
-			/* clear bits per symbol */
-			UART_CTL_BITSPERSYM_MASK |
-			/* clear xmit break */
-			UART_CTL_XMITBRK_MASK |
-			/* clear reserved bit */
-			UART_CTL_RSVD_MASK |
-			/* disable parity */
-			UART_CTL_RXPAREN_MASK |
-			UART_CTL_TXPAREN_MASK |
-			/* disable loopback */
-			UART_CTL_LOOPBACK_MASK,
-			/* set timeout to 5 */
-			UART_CTL_RXTIMEOUT_5 |
-			/* set 8 bits/symbol */
-			UART_CTL_BITSPERSYM_8 |
-			/* set 1 stop bit */
-			UART_CTL_STOPBITS_1 |
-			/* set parity to even */
-			UART_CTL_RXPAREVEN_MASK |
-			UART_CTL_TXPAREVEN_MASK);
-
-	/* set uart fifo config */
-	clrsetbits_le32(base + UART_FIFO_CFG_REG,
-			/* clear fifo config */
-			UART_FIFO_CFG_RX_MASK |
-			UART_FIFO_CFG_TX_MASK,
-			/* set fifo config to 4 */
-			UART_FIFO_CFG_RX_4 |
-			UART_FIFO_CFG_TX_4);
-
-	/* set baud rate */
-	val = ((clk / baudrate) >> 4);
-	if (val & 0x1)
-		val = (val >> 1);
-	else
-		val = (val >> 1) - 1;
-	writel(val, base + UART_BAUD_REG);
-
-	/* clear interrupts */
-	writel(0, base + UART_IR_REG);
-
-	/* enable uart */
-	bcm6858_serial_enable(base);
-
-	return 0;
-}
-
-static int bcm6858_serial_pending(struct udevice *dev, bool input)
-{
-	struct bcm6858_serial_priv *priv = dev_get_priv(dev);
-	u32 val = readl(priv->base + UART_IR_REG);
-
-	if (input)
-		return !!(val & UART_IR_STAT(UART_IR_RXNOTEMPTY));
-	else
-		return !(val & UART_IR_STAT(UART_IR_TXEMPTY));
-}
-
-static int bcm6858_serial_setbrg(struct udevice *dev, int baudrate)
-{
-	struct bcm6858_serial_priv *priv = dev_get_priv(dev);
-
-	return bcm6858_serial_init(priv->base, priv->uartclk, baudrate);
-}
-
-static int bcm6858_serial_putc(struct udevice *dev, const char ch)
-{
-	struct bcm6858_serial_priv *priv = dev_get_priv(dev);
-	u32 val;
-
-	val = readl(priv->base + UART_IR_REG);
-	if (!(val & UART_IR_STAT(UART_IR_TXEMPTY)))
-		return -EAGAIN;
-
-	writel(ch, priv->base + UART_FIFO_REG);
-
-	return 0;
-}
-
-static int bcm6858_serial_getc(struct udevice *dev)
-{
-	struct bcm6858_serial_priv *priv = dev_get_priv(dev);
-	u32 val;
-
-	val = readl(priv->base + UART_IR_REG);
-	if (val & UART_IR_STAT(UART_IR_RXOVER))
-		setbits_le32(priv->base + UART_CTL_REG,
-			     UART_CTL_RSTRXFIFO_MASK);
-
-	if (!(val & UART_IR_STAT(UART_IR_RXNOTEMPTY)))
-		return -EAGAIN;
-
-	val = readl(priv->base + UART_FIFO_REG);
-	if (val & UART_FIFO_ANYERR_MASK)
-		return -EAGAIN;
-
-	return val & UART_FIFO_VALID_MASK;
-}
-
-static int bcm6858_serial_probe(struct udevice *dev)
-{
-	struct bcm6858_serial_priv *priv = dev_get_priv(dev);
-	struct clk clk;
-	int ret;
-
-	/* get address */
-	priv->base = dev_remap_addr(dev);
-	if (!priv->base)
-		return -EINVAL;
-
-	/* get clock rate */
-	ret = clk_get_by_index(dev, 0, &clk);
-	if (ret < 0)
-		return ret;
-	priv->uartclk = clk_get_rate(&clk);
-	clk_free(&clk);
-
-	/* initialize serial */
-	return bcm6858_serial_init(priv->base, priv->uartclk, CONFIG_BAUDRATE);
-}
-
-static const struct dm_serial_ops bcm6858_serial_ops = {
-	.putc = bcm6858_serial_putc,
-	.pending = bcm6858_serial_pending,
-	.getc = bcm6858_serial_getc,
-	.setbrg = bcm6858_serial_setbrg,
-};
-
-static const struct udevice_id bcm6858_serial_ids[] = {
-	{ .compatible = "brcm,bcm6858-uart" },
-	{ /* sentinel */ }
-};
-
-U_BOOT_DRIVER(bcm6858_serial) = {
-	.name = "bcm6858-uart",
-	.id = UCLASS_SERIAL,
-	.of_match = bcm6858_serial_ids,
-	.probe = bcm6858_serial_probe,
-	.priv_auto_alloc_size = sizeof(struct bcm6858_serial_priv),
-	.ops = &bcm6858_serial_ops,
-	.flags = DM_FLAG_PRE_RELOC,
-};
-
-#ifdef CONFIG_DEBUG_UART_BCM6858
-static inline void _debug_uart_init(void)
-{
-	void __iomem *base = (void __iomem *)CONFIG_DEBUG_UART_BASE;
-
-	bcm6858_serial_init(base, CONFIG_DEBUG_UART_CLOCK, CONFIG_BAUDRATE);
-}
-
-static inline void wait_xfered(void __iomem *base)
-{
-	do {
-		u32 val = readl(base + UART_IR_REG);
-		if (val & UART_IR_STAT(UART_IR_TXEMPTY))
-			break;
-	} while (1);
-}
-
-static inline void _debug_uart_putc(int ch)
-{
-	void __iomem *base = (void __iomem *)CONFIG_DEBUG_UART_BASE;
-
-	wait_xfered(base);
-	writel(ch, base + UART_FIFO_REG);
-	wait_xfered(base);
-}
-
-DEBUG_UART_FUNCS
-#endif