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arm: lpc32xx: Remove unused hsuart driver

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This driver is not enabled in any config currently, remove it.

Cc: Trevor Woerner <twoerner@gmail.com>
Signed-off-by: Tom Rini <trini@konsulko.com>
This commit is contained in:
Tom Rini
2022-11-19 18:45:24 -05:00
parent 68e54040cc
commit d5596cbc6e
5 changed files with 0 additions and 155 deletions
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1
drivers/serial/Makefile
View File

@@ -38,7 +38,6 @@ obj-$(CONFIG_COREBOOT_SERIAL) += serial_coreboot.o
obj-$(CONFIG_CORTINA_UART) += serial_cortina.o
obj-$(CONFIG_DEBUG_SBI_CONSOLE) += serial_sbi.o
obj-$(CONFIG_EFI_APP) += serial_efi.o
obj-$(CONFIG_LPC32XX_HSUART) += lpc32xx_hsuart.o
obj-$(CONFIG_MCFUART) += serial_mcf.o
obj-$(CONFIG_SYS_NS16550) += ns16550.o
obj-$(CONFIG_S5P_SERIAL) += serial_s5p.o

112
drivers/serial/lpc32xx_hsuart.c
View File

@@ -1,112 +0,0 @@
// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2011-2015 Vladimir Zapolskiy <vz@mleia.com>
*/
#include <common.h>
#include <clock_legacy.h>
#include <dm.h>
#include <serial.h>
#include <dm/platform_data/lpc32xx_hsuart.h>
#include <asm/arch/uart.h>
#include <linux/compiler.h>
struct lpc32xx_hsuart_priv {
struct hsuart_regs *hsuart;
};
static int lpc32xx_serial_setbrg(struct udevice *dev, int baudrate)
{
struct lpc32xx_hsuart_priv *priv = dev_get_priv(dev);
struct hsuart_regs *hsuart = priv->hsuart;
u32 div;
/* UART rate = PERIPH_CLK / ((HSU_RATE + 1) x 14) */
div = (get_serial_clock() / 14 + baudrate / 2) / baudrate - 1;
if (div > 255)
div = 255;
writel(div, &hsuart->rate);
return 0;
}
static int lpc32xx_serial_getc(struct udevice *dev)
{
struct lpc32xx_hsuart_priv *priv = dev_get_priv(dev);
struct hsuart_regs *hsuart = priv->hsuart;
if (!(readl(&hsuart->level) & HSUART_LEVEL_RX))
return -EAGAIN;
return readl(&hsuart->rx) & HSUART_RX_DATA;
}
static int lpc32xx_serial_putc(struct udevice *dev, const char c)
{
struct lpc32xx_hsuart_priv *priv = dev_get_priv(dev);
struct hsuart_regs *hsuart = priv->hsuart;
/* Wait for empty FIFO */
if (readl(&hsuart->level) & HSUART_LEVEL_TX)
return -EAGAIN;
writel(c, &hsuart->tx);
return 0;
}
static int lpc32xx_serial_pending(struct udevice *dev, bool input)
{
struct lpc32xx_hsuart_priv *priv = dev_get_priv(dev);
struct hsuart_regs *hsuart = priv->hsuart;
if (input) {
if (readl(&hsuart->level) & HSUART_LEVEL_RX)
return 1;
} else {
if (readl(&hsuart->level) & HSUART_LEVEL_TX)
return 1;
}
return 0;
}
static int lpc32xx_serial_init(struct hsuart_regs *hsuart)
{
/* Disable hardware RTS and CTS flow control, set up RX and TX FIFO */
writel(HSUART_CTRL_TMO_16 | HSUART_CTRL_HSU_OFFSET(20) |
HSUART_CTRL_HSU_RX_TRIG_32 | HSUART_CTRL_HSU_TX_TRIG_0,
&hsuart->ctrl);
return 0;
}
static int lpc32xx_hsuart_probe(struct udevice *dev)
{
struct lpc32xx_hsuart_plat *plat = dev_get_plat(dev);
struct lpc32xx_hsuart_priv *priv = dev_get_priv(dev);
priv->hsuart = (struct hsuart_regs *)plat->base;
lpc32xx_serial_init(priv->hsuart);
return 0;
}
static const struct dm_serial_ops lpc32xx_hsuart_ops = {
.setbrg = lpc32xx_serial_setbrg,
.getc = lpc32xx_serial_getc,
.putc = lpc32xx_serial_putc,
.pending = lpc32xx_serial_pending,
};
U_BOOT_DRIVER(lpc32xx_hsuart) = {
.name = "lpc32xx_hsuart",
.id = UCLASS_SERIAL,
.probe = lpc32xx_hsuart_probe,
.ops = &lpc32xx_hsuart_ops,
.priv_auto = sizeof(struct lpc32xx_hsuart_priv),
.flags = DM_FLAG_PRE_RELOC,
};