[U-Boot] [PATCH 4/8] arm: Drop pxa serial driver

Simon Glass
2016-10-20T19:06:56Z

There are no boards using this driver and it has not been converted to
driver model. Drop it.

Signed-off-by: Simon Glass <sjg@chromium.org>
---

doc/driver-model/serial-howto.txt | 1 -
drivers/serial/Makefile | 1 -
drivers/serial/serial_pxa.c | 299 --------------------------------------
scripts/config_whitelist.txt | 1 -
4 files changed, 302 deletions(-)
delete mode 100644 drivers/serial/serial_pxa.c

diff --git a/doc/driver-model/serial-howto.txt b/doc/driver-model/serial-howto.txt
index cddfb9f..ed846e5 100644
--- a/doc/driver-model/serial-howto.txt
+++ b/doc/driver-model/serial-howto.txt
@@ -6,7 +6,6 @@ ones remain:

mcfuart.c
serial_bfin.c
- serial_pxa.c
serial_s3c24x0.c

The deadline for this work was the end of January 2016. If no one steps
diff --git a/drivers/serial/Makefile b/drivers/serial/Makefile
index 21b1292..0c75718 100644
--- a/drivers/serial/Makefile
+++ b/drivers/serial/Makefile
@@ -26,7 +26,6 @@ obj-$(CONFIG_MCFUART) += mcfuart.o
obj-$(CONFIG_SYS_NS16550) += ns16550.o
obj-$(CONFIG_S5P) += serial_s5p.o
obj-$(CONFIG_MXC_UART) += serial_mxc.o
-obj-$(CONFIG_PXA_SERIAL) += serial_pxa.o
obj-$(CONFIG_MESON_SERIAL) += serial_meson.o
ifdef CONFIG_SPL_BUILD
obj-$(CONFIG_ROCKCHIP_SERIAL) += serial_rockchip.o
diff --git a/drivers/serial/serial_pxa.c b/drivers/serial/serial_pxa.c
deleted file mode 100644
index 1eb19ec..0000000
--- a/drivers/serial/serial_pxa.c
+++ /dev/null
@@ -1,299 +0,0 @@
-/*
- * Copyright (C) 2011 Marek Vasut <marek.vasut@gmail.com>
- *
- * (C) Copyright 2002
- * Wolfgang Denk, DENX Software Engineering, <wd@denx.de>
- *
- * (C) Copyright 2002
- * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
- * Marius Groeger <mgroeger@sysgo.de>
- *
- * (C) Copyright 2002
- * Sysgo Real-Time Solutions, GmbH <www.elinos.com>
- * Alex Zuepke <azu@sysgo.de>
- *
- * Copyright (C) 1999 2000 2001 Erik Mouw (J.A.K.Mouw at its.tudelft.nl)
- *
- * SPDX-License-Identifier: GPL-2.0+
- */
-
-#include <common.h>
-#include <asm/arch/pxa-regs.h>
-#include <asm/arch/regs-uart.h>
-#include <asm/io.h>
-#include <linux/compiler.h>
-#include <serial.h>
-#include <watchdog.h>
-
-DECLARE_GLOBAL_DATA_PTR;
-
-/*
- * The numbering scheme differs here for PXA25x, PXA27x and PXA3xx so we can
- * easily handle enabling of clock.
- */
-#ifdef CONFIG_CPU_MONAHANS
-#define UART_CLK_BASE CKENA_21_BTUART
-#define UART_CLK_REG CKENA
-#define BTUART_INDEX 0
-#define FFUART_INDEX 1
-#define STUART_INDEX 2
-#elif CONFIG_CPU_PXA25X
-#define UART_CLK_BASE (1 << 4) /* HWUART */
-#define UART_CLK_REG CKEN
-#define HWUART_INDEX 0
-#define STUART_INDEX 1
-#define FFUART_INDEX 2
-#define BTUART_INDEX 3
-#else /* PXA27x */
-#define UART_CLK_BASE CKEN5_STUART
-#define UART_CLK_REG CKEN
-#define STUART_INDEX 0
-#define FFUART_INDEX 1
-#define BTUART_INDEX 2
-#endif
-
-/*
- * Only PXA250 has HWUART, to avoid poluting the code with more macros,
- * artificially introduce this.
- */
-#ifndef CONFIG_CPU_PXA25X
-#define HWUART_INDEX 0xff
-#endif
-
-static uint32_t pxa_uart_get_baud_divider(void)
-{
- if (gd->baudrate == 1200)
- return 768;
- else if (gd->baudrate == 9600)
- return 96;
- else if (gd->baudrate == 19200)
- return 48;
- else if (gd->baudrate == 38400)
- return 24;
- else if (gd->baudrate == 57600)
- return 16;
- else if (gd->baudrate == 115200)
- return 8;
- else /* Unsupported baudrate */
- return 0;
-}
-
-static struct pxa_uart_regs *pxa_uart_index_to_regs(uint32_t uart_index)
-{
- switch (uart_index) {
- case FFUART_INDEX: return (struct pxa_uart_regs *)FFUART_BASE;
- case BTUART_INDEX: return (struct pxa_uart_regs *)BTUART_BASE;
- case STUART_INDEX: return (struct pxa_uart_regs *)STUART_BASE;
- case HWUART_INDEX: return (struct pxa_uart_regs *)HWUART_BASE;
- default:
- return NULL;
- }
-}
-
-static void pxa_uart_toggle_clock(uint32_t uart_index, int enable)
-{
- uint32_t clk_reg, clk_offset, reg;
-
- clk_reg = UART_CLK_REG;
- clk_offset = UART_CLK_BASE << uart_index;
-
- reg = readl(clk_reg);
-
- if (enable)
- reg |= clk_offset;
- else
- reg &= ~clk_offset;
-
- writel(reg, clk_reg);
-}
-
-/*
- * Enable clock and set baud rate, parity etc.
- */
-void pxa_setbrg_dev(uint32_t uart_index)
-{
- uint32_t divider = 0;
- struct pxa_uart_regs *uart_regs;
-
- divider = pxa_uart_get_baud_divider();
- if (!divider)
- hang();
-
- uart_regs = pxa_uart_index_to_regs(uart_index);
- if (!uart_regs)
- hang();
-
- pxa_uart_toggle_clock(uart_index, 1);
-
- /* Disable interrupts and FIFOs */
- writel(0, &uart_regs->ier);
- writel(0, &uart_regs->fcr);
-
- /* Set baud rate */
- writel(LCR_WLS0 | LCR_WLS1 | LCR_DLAB, &uart_regs->lcr);
- writel(divider & 0xff, &uart_regs->dll);
- writel(divider >> 8, &uart_regs->dlh);
- writel(LCR_WLS0 | LCR_WLS1, &uart_regs->lcr);
-
- /* Enable UART */
- writel(IER_UUE, &uart_regs->ier);
-}
-
-/*
- * Initialise the serial port with the given baudrate. The settings
- * are always 8 data bits, no parity, 1 stop bit, no start bits.
- */
-int pxa_init_dev(unsigned int uart_index)
-{
- pxa_setbrg_dev (uart_index);
- return 0;
-}
-
-/*
- * Output a single byte to the serial port.
- */
-void pxa_putc_dev(unsigned int uart_index, const char c)
-{
- struct pxa_uart_regs *uart_regs;
-
- /* If \n, also do \r */
- if (c == '\n')
- pxa_putc_dev(uart_index, '\r');
-
- uart_regs = pxa_uart_index_to_regs(uart_index);
- if (!uart_regs)
- hang();
-
- while (!(readl(&uart_regs->lsr) & LSR_TEMT))
- WATCHDOG_RESET();
- writel(c, &uart_regs->thr);
-}
-
-/*
- * Read a single byte from the serial port. Returns 1 on success, 0
- * otherwise. When the function is succesfull, the character read is
- * written into its argument c.
- */
-int pxa_tstc_dev(unsigned int uart_index)
-{
- struct pxa_uart_regs *uart_regs;
-
- uart_regs = pxa_uart_index_to_regs(uart_index);
- if (!uart_regs)
- return -1;
-
- return readl(&uart_regs->lsr) & LSR_DR;
-}
-
-/*
- * Read a single byte from the serial port. Returns 1 on success, 0
- * otherwise. When the function is succesfull, the character read is
- * written into its argument c.
- */
-int pxa_getc_dev(unsigned int uart_index)
-{
- struct pxa_uart_regs *uart_regs;
-
- uart_regs = pxa_uart_index_to_regs(uart_index);
- if (!uart_regs)
- return -1;
-
- while (!(readl(&uart_regs->lsr) & LSR_DR))
- WATCHDOG_RESET();
- return readl(&uart_regs->rbr) & 0xff;
-}
-
-void pxa_puts_dev(unsigned int uart_index, const char *s)
-{
- while (*s)
- pxa_putc_dev(uart_index, *s++);
-}
-
-#define pxa_uart(uart, UART) \
- int uart##_init(void) \
- { \
- return pxa_init_dev(UART##_INDEX); \
- } \
- \
- void uart##_setbrg(void) \
- { \
- return pxa_setbrg_dev(UART##_INDEX); \
- } \
- \
- void uart##_putc(const char c) \
- { \
- return pxa_putc_dev(UART##_INDEX, c); \
- } \
- \
- void uart##_puts(const char *s) \
- { \
- return pxa_puts_dev(UART##_INDEX, s); \
- } \
- \
- int uart##_getc(void) \
- { \
- return pxa_getc_dev(UART##_INDEX); \
- } \
- \
- int uart##_tstc(void) \
- { \
- return pxa_tstc_dev(UART##_INDEX); \
- } \
-
-#define pxa_uart_desc(uart) \
- struct serial_device serial_##uart##_device = \
- { \
- .name = "serial_"#uart, \
- .start = uart##_init, \
- .stop = NULL, \
- .setbrg = uart##_setbrg, \
- .getc = uart##_getc, \
- .tstc = uart##_tstc, \
- .putc = uart##_putc, \
- .puts = uart##_puts, \
- };
-
-#define pxa_uart_multi(uart, UART) \
- pxa_uart(uart, UART) \
- pxa_uart_desc(uart)
-
-#if defined(CONFIG_HWUART)
- pxa_uart_multi(hwuart, HWUART)
-#endif
-#if defined(CONFIG_STUART)
- pxa_uart_multi(stuart, STUART)
-#endif
-#if defined(CONFIG_FFUART)
- pxa_uart_multi(ffuart, FFUART)
-#endif
-#if defined(CONFIG_BTUART)
- pxa_uart_multi(btuart, BTUART)
-#endif
-
-__weak struct serial_device *default_serial_console(void)
-{
-#if CONFIG_CONS_INDEX == 1
- return &serial_hwuart_device;
-#elif CONFIG_CONS_INDEX == 2
- return &serial_stuart_device;
-#elif CONFIG_CONS_INDEX == 3
- return &serial_ffuart_device;
-#elif CONFIG_CONS_INDEX == 4
- return &serial_btuart_device;
-#else
-#error "Bad CONFIG_CONS_INDEX."
-#endif
-}
-
-void pxa_serial_initialize(void)
-{
-#if defined(CONFIG_FFUART)
- serial_register(&serial_ffuart_device);
-#endif
-#if defined(CONFIG_BTUART)
- serial_register(&serial_btuart_device);
-#endif
-#if defined(CONFIG_STUART)
- serial_register(&serial_stuart_device);
-#endif
-}
diff --git a/scripts/config_whitelist.txt b/scripts/config_whitelist.txt
index 2c10c0b..4d42fc5 100644
--- a/scripts/config_whitelist.txt
+++ b/scripts/config_whitelist.txt
@@ -3751,7 +3751,6 @@ CONFIG_PWM_IMX
CONFIG_PXA_LCD
CONFIG_PXA_MMC_GENERIC
CONFIG_PXA_PWR_I2C
-CONFIG_PXA_SERIAL
CONFIG_PXA_STD_I2C
CONFIG_PXA_VGA
CONFIG_PXA_VIDEO
--
2.8.0.rc3.226.g39d4020