@@ -727,14 +727,6 @@ source "arch/arm/mach-zx/Kconfig"
source "arch/arm/mach-zynq/Kconfig"
# ARMv7-M architecture
-config ARCH_EFM32
- bool "Energy Micro efm32"
- depends on ARM_SINGLE_ARMV7M
- select GPIOLIB
- help
- Support for Energy Micro's (now Silicon Labs) efm32 Giant Gecko
- processors.
-
config ARCH_LPC18XX
bool "NXP LPC18xx/LPC43xx"
depends on ARM_SINGLE_ARMV7M
@@ -1552,7 +1544,7 @@ config ARM_MODULE_PLTS
config FORCE_MAX_ZONEORDER
int "Maximum zone order"
default "12" if SOC_AM33XX
- default "9" if SA1111 || ARCH_EFM32
+ default "9" if SA1111
default "11"
help
The kernel memory allocator divides physically contiguous memory
@@ -1456,20 +1456,6 @@ choice
options; the platform specific options are deprecated
and will be soon removed.
- config DEBUG_LL_UART_EFM32
- bool "Kernel low-level debugging via efm32 UART"
- depends on ARCH_EFM32
- help
- Say Y here if you want the debug print routines to direct
- their output to an UART or USART port on efm32 based
- machines. Use the following addresses for DEBUG_UART_PHYS:
-
- 0x4000c000 | USART0
- 0x4000c400 | USART1
- 0x4000c800 | USART2
- 0x4000e000 | UART0
- 0x4000e400 | UART1
-
config DEBUG_LL_UART_PL01X
bool "Kernel low-level debugging via ARM Ltd PL01x Primecell UART"
help
@@ -1587,7 +1573,6 @@ config DEBUG_LL_INCLUDE
default "debug/meson.S" if DEBUG_MESON_UARTAO
default "debug/pl01x.S" if DEBUG_LL_UART_PL01X || DEBUG_UART_PL01X
default "debug/exynos.S" if DEBUG_EXYNOS_UART
- default "debug/efm32.S" if DEBUG_LL_UART_EFM32
default "debug/icedcc.S" if DEBUG_ICEDCC
default "debug/imx.S" if DEBUG_IMX1_UART || \
DEBUG_IMX25_UART || \
@@ -1682,7 +1667,6 @@ config DEBUG_UART_PHYS
default 0x20201000 if DEBUG_BCM2835
default 0x3e000000 if DEBUG_BCM_KONA_UART
default 0x3f201000 if DEBUG_BCM2836
- default 0x4000e400 if DEBUG_LL_UART_EFM32
default 0x40010000 if STM32MP1_DEBUG_UART
default 0x40011000 if STM32F4_DEBUG_UART || STM32F7_DEBUG_UART || \
STM32H7_DEBUG_UART
@@ -1768,7 +1752,6 @@ config DEBUG_UART_PHYS
default 0xfffff200 if DEBUG_AT91_RM9200_DBGU
depends on ARCH_EP93XX || \
DEBUG_LL_UART_8250 || DEBUG_LL_UART_PL01X || \
- DEBUG_LL_UART_EFM32 || \
DEBUG_UART_8250 || DEBUG_UART_PL01X || DEBUG_MESON_UARTAO || \
DEBUG_QCOM_UARTDM || DEBUG_R7S72100_SCIF2 || \
DEBUG_R7S9210_SCIF2 || DEBUG_R7S9210_SCIF4 || \
@@ -168,7 +168,6 @@ machine-$(CONFIG_ARCH_CNS3XXX) += cns3xxx
machine-$(CONFIG_ARCH_DAVINCI) += davinci
machine-$(CONFIG_ARCH_DIGICOLOR) += digicolor
machine-$(CONFIG_ARCH_DOVE) += dove
-machine-$(CONFIG_ARCH_EFM32) += efm32
machine-$(CONFIG_ARCH_EP93XX) += ep93xx
machine-$(CONFIG_ARCH_EXYNOS) += exynos
machine-$(CONFIG_ARCH_FOOTBRIDGE) += footbridge
@@ -177,8 +177,6 @@ dtb-$(CONFIG_ARCH_DAVINCI) += \
da850-lego-ev3.dtb
dtb-$(CONFIG_ARCH_DIGICOLOR) += \
cx92755_equinox.dtb
-dtb-$(CONFIG_ARCH_EFM32) += \
- efm32gg-dk3750.dtb
dtb-$(CONFIG_ARCH_EXYNOS3) += \
exynos3250-artik5-eval.dtb \
exynos3250-monk.dtb \
deleted file mode 100644
@@ -1,88 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Device tree for EFM32GG-DK3750 development board.
- *
- * Documentation available from
- * http://www.silabs.com/Support%20Documents/TechnicalDocs/efm32gg-dk3750-ug.pdf
- */
-
-/dts-v1/;
-#include "efm32gg.dtsi"
-
-/ {
- model = "Energy Micro Giant Gecko Development Kit";
- compatible = "efm32,dk3750";
-
- chosen {
- bootargs = "console=ttyefm4,115200 init=/linuxrc ignore_loglevel ihash_entries=64 dhash_entries=64 earlyprintk uclinux.physaddr=0x8c400000 root=/dev/mtdblock0";
- };
-
- memory@88000000 {
- device_type = "memory";
- reg = <0x88000000 0x400000>;
- };
-
- soc {
- adc@40002000 {
- status = "ok";
- };
-
- i2c@4000a000 {
- energymicro,location = <3>;
- status = "ok";
-
- temp@48 {
- compatible = "st,stds75";
- reg = <0x48>;
- };
-
- eeprom@50 {
- compatible = "microchip,24c02", "atmel,24c02";
- reg = <0x50>;
- pagesize = <16>;
- };
- };
-
- spi0: spi@4000c000 { /* USART0 */
- cs-gpios = <&gpio 68 1>; // E4
- energymicro,location = <1>;
- status = "ok";
-
- microsd@0 {
- compatible = "mmc-spi-slot";
- spi-max-frequency = <100000>;
- voltage-ranges = <3200 3400>;
- broken-cd;
- reg = <0>;
- };
- };
-
- spi1: spi@4000c400 { /* USART1 */
- cs-gpios = <&gpio 51 1>; // D3
- energymicro,location = <1>;
- status = "ok";
-
- ks8851@0 {
- compatible = "ks8851";
- spi-max-frequency = <6000000>;
- reg = <0>;
- interrupt-parent = <&boardfpga>;
- interrupts = <4>;
- };
- };
-
- uart4: uart@4000e400 { /* UART1 */
- energymicro,location = <2>;
- status = "ok";
- };
-
- boardfpga: boardfpga@80000000 {
- compatible = "efm32board";
- reg = <0x80000000 0x400>;
- irq-gpios = <&gpio 64 1>;
- interrupt-controller;
- #interrupt-cells = <1>;
- status = "ok";
- };
- };
-};
deleted file mode 100644
@@ -1,177 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Device tree for Energy Micro EFM32 Giant Gecko SoC.
- *
- * Documentation available from
- * http://www.silabs.com/Support%20Documents/TechnicalDocs/EFM32GG-RM.pdf
- */
-
-#include "armv7-m.dtsi"
-#include "dt-bindings/clock/efm32-cmu.h"
-
-/ {
- #address-cells = <1>;
- #size-cells = <1>;
-
- aliases {
- i2c0 = &i2c0;
- i2c1 = &i2c1;
- serial0 = &uart0;
- serial1 = &uart1;
- serial2 = &uart2;
- serial3 = &uart3;
- serial4 = &uart4;
- spi0 = &spi0;
- spi1 = &spi1;
- spi2 = &spi2;
- };
-
- soc {
- adc: adc@40002000 {
- compatible = "energymicro,efm32-adc";
- reg = <0x40002000 0x400>;
- interrupts = <7>;
- clocks = <&cmu clk_HFPERCLKADC0>;
- status = "disabled";
- };
-
- gpio: gpio@40006000 {
- compatible = "energymicro,efm32-gpio";
- reg = <0x40006000 0x1000>;
- interrupts = <1 11>;
- gpio-controller;
- #gpio-cells = <2>;
- interrupt-controller;
- #interrupt-cells = <1>;
- clocks = <&cmu clk_HFPERCLKGPIO>;
- status = "ok";
- };
-
- i2c0: i2c@4000a000 {
- #address-cells = <1>;
- #size-cells = <0>;
- compatible = "energymicro,efm32-i2c";
- reg = <0x4000a000 0x400>;
- interrupts = <9>;
- clocks = <&cmu clk_HFPERCLKI2C0>;
- clock-frequency = <100000>;
- status = "disabled";
- };
-
- i2c1: i2c@4000a400 {
- #address-cells = <1>;
- #size-cells = <0>;
- compatible = "energymicro,efm32-i2c";
- reg = <0x4000a400 0x400>;
- interrupts = <10>;
- clocks = <&cmu clk_HFPERCLKI2C1>;
- clock-frequency = <100000>;
- status = "disabled";
- };
-
- spi0: spi@4000c000 { /* USART0 */
- #address-cells = <1>;
- #size-cells = <0>;
- compatible = "energymicro,efm32-spi";
- reg = <0x4000c000 0x400>;
- interrupts = <3 4>;
- clocks = <&cmu clk_HFPERCLKUSART0>;
- status = "disabled";
- };
-
- spi1: spi@4000c400 { /* USART1 */
- #address-cells = <1>;
- #size-cells = <0>;
- compatible = "energymicro,efm32-spi";
- reg = <0x4000c400 0x400>;
- interrupts = <15 16>;
- clocks = <&cmu clk_HFPERCLKUSART1>;
- status = "disabled";
- };
-
- spi2: spi@4000c800 { /* USART2 */
- #address-cells = <1>;
- #size-cells = <0>;
- compatible = "energymicro,efm32-spi";
- reg = <0x4000c800 0x400>;
- interrupts = <18 19>;
- clocks = <&cmu clk_HFPERCLKUSART2>;
- status = "disabled";
- };
-
- uart0: uart@4000c000 { /* USART0 */
- compatible = "energymicro,efm32-uart";
- reg = <0x4000c000 0x400>;
- interrupts = <3 4>;
- clocks = <&cmu clk_HFPERCLKUSART0>;
- status = "disabled";
- };
-
- uart1: uart@4000c400 { /* USART1 */
- compatible = "energymicro,efm32-uart";
- reg = <0x4000c400 0x400>;
- interrupts = <15 16>;
- clocks = <&cmu clk_HFPERCLKUSART1>;
- status = "disabled";
- };
-
- uart2: uart@4000c800 { /* USART2 */
- compatible = "energymicro,efm32-uart";
- reg = <0x4000c800 0x400>;
- interrupts = <18 19>;
- clocks = <&cmu clk_HFPERCLKUSART2>;
- status = "disabled";
- };
-
- uart3: uart@4000e000 { /* UART0 */
- compatible = "energymicro,efm32-uart";
- reg = <0x4000e000 0x400>;
- interrupts = <20 21>;
- clocks = <&cmu clk_HFPERCLKUART0>;
- status = "disabled";
- };
-
- uart4: uart@4000e400 { /* UART1 */
- compatible = "energymicro,efm32-uart";
- reg = <0x4000e400 0x400>;
- interrupts = <22 23>;
- clocks = <&cmu clk_HFPERCLKUART1>;
- status = "disabled";
- };
-
- timer0: timer@40010000 {
- compatible = "energymicro,efm32-timer";
- reg = <0x40010000 0x400>;
- interrupts = <2>;
- clocks = <&cmu clk_HFPERCLKTIMER0>;
- };
-
- timer1: timer@40010400 {
- compatible = "energymicro,efm32-timer";
- reg = <0x40010400 0x400>;
- interrupts = <12>;
- clocks = <&cmu clk_HFPERCLKTIMER1>;
- };
-
- timer2: timer@40010800 {
- compatible = "energymicro,efm32-timer";
- reg = <0x40010800 0x400>;
- interrupts = <13>;
- clocks = <&cmu clk_HFPERCLKTIMER2>;
- };
-
- timer3: timer@40010c00 {
- compatible = "energymicro,efm32-timer";
- reg = <0x40010c00 0x400>;
- interrupts = <14>;
- clocks = <&cmu clk_HFPERCLKTIMER3>;
- };
-
- cmu: cmu@400c8000 {
- compatible = "efm32gg,cmu";
- reg = <0x400c8000 0x400>;
- interrupts = <32>;
- #clock-cells = <1>;
- };
- };
-};
deleted file mode 100644
@@ -1,98 +0,0 @@
-CONFIG_HIGH_RES_TIMERS=y
-CONFIG_LOG_BUF_SHIFT=12
-CONFIG_CC_OPTIMIZE_FOR_SIZE=y
-# CONFIG_UID16 is not set
-# CONFIG_BASE_FULL is not set
-# CONFIG_FUTEX is not set
-# CONFIG_EPOLL is not set
-# CONFIG_SIGNALFD is not set
-# CONFIG_EVENTFD is not set
-# CONFIG_AIO is not set
-CONFIG_EMBEDDED=y
-# CONFIG_VM_EVENT_COUNTERS is not set
-# CONFIG_SLUB_DEBUG is not set
-# CONFIG_BLK_DEV_BSG is not set
-# CONFIG_MMU is not set
-CONFIG_ARM_SINGLE_ARMV7M=y
-CONFIG_ARCH_EFM32=y
-CONFIG_SET_MEM_PARAM=y
-CONFIG_DRAM_BASE=0x88000000
-CONFIG_DRAM_SIZE=0x00400000
-CONFIG_FLASH_MEM_BASE=0x8c000000
-CONFIG_FLASH_SIZE=0x01000000
-CONFIG_PREEMPT=y
-CONFIG_ZBOOT_ROM_TEXT=0x0
-CONFIG_ZBOOT_ROM_BSS=0x0
-CONFIG_XIP_KERNEL=y
-CONFIG_XIP_PHYS_ADDR=0x8c000000
-CONFIG_BINFMT_FLAT=y
-CONFIG_BINFMT_SHARED_FLAT=y
-# CONFIG_COREDUMP is not set
-CONFIG_NET=y
-CONFIG_PACKET=y
-CONFIG_UNIX=y
-CONFIG_INET=y
-# CONFIG_INET_XFRM_MODE_TRANSPORT is not set
-# CONFIG_INET_XFRM_MODE_TUNNEL is not set
-# CONFIG_INET_XFRM_MODE_BEET is not set
-# CONFIG_INET_DIAG is not set
-# CONFIG_IPV6 is not set
-# CONFIG_WIRELESS is not set
-CONFIG_DEVTMPFS=y
-CONFIG_DEVTMPFS_MOUNT=y
-# CONFIG_FW_LOADER is not set
-CONFIG_MTD=y
-CONFIG_MTD_BLOCK_RO=y
-CONFIG_MTD_ROM=y
-CONFIG_MTD_UCLINUX=y
-# CONFIG_BLK_DEV is not set
-CONFIG_NETDEVICES=y
-# CONFIG_NET_VENDOR_ARC is not set
-# CONFIG_NET_CADENCE is not set
-# CONFIG_NET_VENDOR_BROADCOM is not set
-# CONFIG_NET_VENDOR_CIRRUS is not set
-# CONFIG_NET_VENDOR_FARADAY is not set
-# CONFIG_NET_VENDOR_INTEL is not set
-# CONFIG_NET_VENDOR_MARVELL is not set
-CONFIG_KS8851=y
-# CONFIG_NET_VENDOR_MICROCHIP is not set
-# CONFIG_NET_VENDOR_NATSEMI is not set
-# CONFIG_NET_VENDOR_SEEQ is not set
-# CONFIG_NET_VENDOR_SMSC is not set
-# CONFIG_NET_VENDOR_STMICRO is not set
-# CONFIG_NET_VENDOR_VIA is not set
-# CONFIG_NET_VENDOR_WIZNET is not set
-# CONFIG_WLAN is not set
-# CONFIG_INPUT is not set
-# CONFIG_SERIO is not set
-# CONFIG_VT is not set
-# CONFIG_UNIX98_PTYS is not set
-# CONFIG_LEGACY_PTYS is not set
-CONFIG_SERIAL_NONSTANDARD=y
-# CONFIG_DEVKMEM is not set
-CONFIG_SERIAL_EFM32_UART=y
-CONFIG_SERIAL_EFM32_UART_CONSOLE=y
-# CONFIG_HW_RANDOM is not set
-CONFIG_I2C=y
-# CONFIG_I2C_COMPAT is not set
-CONFIG_I2C_EFM32=y
-CONFIG_SPI=y
-CONFIG_SPI_EFM32=y
-CONFIG_GPIO_SYSFS=y
-# CONFIG_USB_SUPPORT is not set
-CONFIG_MMC=y
-CONFIG_MMC_SPI=y
-CONFIG_EXT2_FS=y
-# CONFIG_FILE_LOCKING is not set
-# CONFIG_DNOTIFY is not set
-# CONFIG_INOTIFY_USER is not set
-CONFIG_ROMFS_FS=y
-CONFIG_ROMFS_BACKED_BY_MTD=y
-# CONFIG_NETWORK_FILESYSTEMS is not set
-CONFIG_PRINTK_TIME=y
-CONFIG_DEBUG_INFO=y
-# CONFIG_ENABLE_MUST_CHECK is not set
-CONFIG_MAGIC_SYSRQ=y
-# CONFIG_SCHED_DEBUG is not set
-# CONFIG_DEBUG_BUGVERBOSE is not set
-# CONFIG_FTRACE is not set
deleted file mode 100644
@@ -1,45 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-only */
-/*
- * Copyright (C) 2013 Pengutronix
- * Uwe Kleine-Koenig <u.kleine-koenig@pengutronix.de>
- */
-
-#define UARTn_CMD 0x000c
-#define UARTn_CMD_TXEN 0x0004
-
-#define UARTn_STATUS 0x0010
-#define UARTn_STATUS_TXC 0x0020
-#define UARTn_STATUS_TXBL 0x0040
-
-#define UARTn_TXDATA 0x0034
-
- .macro addruart, rx, tmp, tmp2
- ldr \rx, =(CONFIG_DEBUG_UART_PHYS)
-
- /*
- * enable TX. The driver might disable it to save energy. We
- * don't care about disabling at the end as during debug power
- * consumption isn't that important.
- */
- ldr \tmp, =(UARTn_CMD_TXEN)
- str \tmp, [\rx, #UARTn_CMD]
- .endm
-
- .macro senduart,rd,rx
- strb \rd, [\rx, #UARTn_TXDATA]
- .endm
-
- .macro waituartcts,rd,rx
- .endm
-
- .macro waituarttxrdy,rd,rx
-1001: ldr \rd, [\rx, #UARTn_STATUS]
- tst \rd, #UARTn_STATUS_TXBL
- beq 1001b
- .endm
-
- .macro busyuart,rd,rx
-1001: ldr \rd, [\rx, UARTn_STATUS]
- tst \rd, #UARTn_STATUS_TXC
- bne 1001b
- .endm
deleted file mode 100644
@@ -1,2 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0-only
-obj-y += dtmachine.o
deleted file mode 100644
@@ -1,4 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0-only
-# Empty file waiting for deletion once Makefile.boot isn't needed any more.
-# Patch waits for application at
-# http://www.arm.linux.org.uk/developer/patches/viewpatch.php?id=7889/1 .
deleted file mode 100644
@@ -1,16 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-#include <linux/kernel.h>
-
-#include <asm/v7m.h>
-
-#include <asm/mach/arch.h>
-
-static const char *const efm32gg_compat[] __initconst = {
- "efm32,dk3750",
- NULL
-};
-
-DT_MACHINE_START(EFM32DT, "EFM32 (Device Tree Support)")
- .dt_compat = efm32gg_compat,
- .restart = armv7m_restart,
-MACHINE_END
@@ -638,7 +638,6 @@ config CPU_V7M_NUM_IRQ
int "Number of external interrupts connected to the NVIC"
depends on CPU_V7M
default 90 if ARCH_STM32
- default 38 if ARCH_EFM32
default 112 if SOC_VF610
default 240
help
deleted file mode 100644
@@ -1,852 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/io.h>
-#include <linux/platform_device.h>
-#include <linux/console.h>
-#include <linux/sysrq.h>
-#include <linux/serial_core.h>
-#include <linux/tty_flip.h>
-#include <linux/slab.h>
-#include <linux/clk.h>
-#include <linux/of.h>
-#include <linux/of_device.h>
-
-#include <linux/platform_data/efm32-uart.h>
-
-#define DRIVER_NAME "efm32-uart"
-#define DEV_NAME "ttyefm"
-
-#define UARTn_CTRL 0x00
-#define UARTn_CTRL_SYNC 0x0001
-#define UARTn_CTRL_TXBIL 0x1000
-
-#define UARTn_FRAME 0x04
-#define UARTn_FRAME_DATABITS__MASK 0x000f
-#define UARTn_FRAME_DATABITS(n) ((n) - 3)
-#define UARTn_FRAME_PARITY__MASK 0x0300
-#define UARTn_FRAME_PARITY_NONE 0x0000
-#define UARTn_FRAME_PARITY_EVEN 0x0200
-#define UARTn_FRAME_PARITY_ODD 0x0300
-#define UARTn_FRAME_STOPBITS_HALF 0x0000
-#define UARTn_FRAME_STOPBITS_ONE 0x1000
-#define UARTn_FRAME_STOPBITS_TWO 0x3000
-
-#define UARTn_CMD 0x0c
-#define UARTn_CMD_RXEN 0x0001
-#define UARTn_CMD_RXDIS 0x0002
-#define UARTn_CMD_TXEN 0x0004
-#define UARTn_CMD_TXDIS 0x0008
-
-#define UARTn_STATUS 0x10
-#define UARTn_STATUS_TXENS 0x0002
-#define UARTn_STATUS_TXC 0x0020
-#define UARTn_STATUS_TXBL 0x0040
-#define UARTn_STATUS_RXDATAV 0x0080
-
-#define UARTn_CLKDIV 0x14
-
-#define UARTn_RXDATAX 0x18
-#define UARTn_RXDATAX_RXDATA__MASK 0x01ff
-#define UARTn_RXDATAX_PERR 0x4000
-#define UARTn_RXDATAX_FERR 0x8000
-/*
- * This is a software only flag used for ignore_status_mask and
- * read_status_mask! It's used for breaks that the hardware doesn't report
- * explicitly.
- */
-#define SW_UARTn_RXDATAX_BERR 0x2000
-
-#define UARTn_TXDATA 0x34
-
-#define UARTn_IF 0x40
-#define UARTn_IF_TXC 0x0001
-#define UARTn_IF_TXBL 0x0002
-#define UARTn_IF_RXDATAV 0x0004
-#define UARTn_IF_RXOF 0x0010
-
-#define UARTn_IFS 0x44
-#define UARTn_IFC 0x48
-#define UARTn_IEN 0x4c
-
-#define UARTn_ROUTE 0x54
-#define UARTn_ROUTE_LOCATION__MASK 0x0700
-#define UARTn_ROUTE_LOCATION(n) (((n) << 8) & UARTn_ROUTE_LOCATION__MASK)
-#define UARTn_ROUTE_RXPEN 0x0001
-#define UARTn_ROUTE_TXPEN 0x0002
-
-struct efm32_uart_port {
- struct uart_port port;
- unsigned int txirq;
- struct clk *clk;
- struct efm32_uart_pdata pdata;
-};
-#define to_efm_port(_port) container_of(_port, struct efm32_uart_port, port)
-#define efm_debug(efm_port, format, arg...) \
- dev_dbg(efm_port->port.dev, format, ##arg)
-
-static void efm32_uart_write32(struct efm32_uart_port *efm_port,
- u32 value, unsigned offset)
-{
- writel_relaxed(value, efm_port->port.membase + offset);
-}
-
-static u32 efm32_uart_read32(struct efm32_uart_port *efm_port,
- unsigned offset)
-{
- return readl_relaxed(efm_port->port.membase + offset);
-}
-
-static unsigned int efm32_uart_tx_empty(struct uart_port *port)
-{
- struct efm32_uart_port *efm_port = to_efm_port(port);
- u32 status = efm32_uart_read32(efm_port, UARTn_STATUS);
-
- if (status & UARTn_STATUS_TXC)
- return TIOCSER_TEMT;
- else
- return 0;
-}
-
-static void efm32_uart_set_mctrl(struct uart_port *port, unsigned int mctrl)
-{
- /* sorry, neither handshaking lines nor loop functionallity */
-}
-
-static unsigned int efm32_uart_get_mctrl(struct uart_port *port)
-{
- /* sorry, no handshaking lines available */
- return TIOCM_CAR | TIOCM_CTS | TIOCM_DSR;
-}
-
-static void efm32_uart_stop_tx(struct uart_port *port)
-{
- struct efm32_uart_port *efm_port = to_efm_port(port);
- u32 ien = efm32_uart_read32(efm_port, UARTn_IEN);
-
- efm32_uart_write32(efm_port, UARTn_CMD_TXDIS, UARTn_CMD);
- ien &= ~(UARTn_IF_TXC | UARTn_IF_TXBL);
- efm32_uart_write32(efm_port, ien, UARTn_IEN);
-}
-
-static void efm32_uart_tx_chars(struct efm32_uart_port *efm_port)
-{
- struct uart_port *port = &efm_port->port;
- struct circ_buf *xmit = &port->state->xmit;
-
- while (efm32_uart_read32(efm_port, UARTn_STATUS) &
- UARTn_STATUS_TXBL) {
- if (port->x_char) {
- port->icount.tx++;
- efm32_uart_write32(efm_port, port->x_char,
- UARTn_TXDATA);
- port->x_char = 0;
- continue;
- }
- if (!uart_circ_empty(xmit) && !uart_tx_stopped(port)) {
- port->icount.tx++;
- efm32_uart_write32(efm_port, xmit->buf[xmit->tail],
- UARTn_TXDATA);
- xmit->tail = (xmit->tail + 1) & (UART_XMIT_SIZE - 1);
- } else
- break;
- }
-
- if (uart_circ_chars_pending(xmit) < WAKEUP_CHARS)
- uart_write_wakeup(port);
-
- if (!port->x_char && uart_circ_empty(xmit) &&
- efm32_uart_read32(efm_port, UARTn_STATUS) &
- UARTn_STATUS_TXC)
- efm32_uart_stop_tx(port);
-}
-
-static void efm32_uart_start_tx(struct uart_port *port)
-{
- struct efm32_uart_port *efm_port = to_efm_port(port);
- u32 ien;
-
- efm32_uart_write32(efm_port,
- UARTn_IF_TXBL | UARTn_IF_TXC, UARTn_IFC);
- ien = efm32_uart_read32(efm_port, UARTn_IEN);
- efm32_uart_write32(efm_port,
- ien | UARTn_IF_TXBL | UARTn_IF_TXC, UARTn_IEN);
- efm32_uart_write32(efm_port, UARTn_CMD_TXEN, UARTn_CMD);
-
- efm32_uart_tx_chars(efm_port);
-}
-
-static void efm32_uart_stop_rx(struct uart_port *port)
-{
- struct efm32_uart_port *efm_port = to_efm_port(port);
-
- efm32_uart_write32(efm_port, UARTn_CMD_RXDIS, UARTn_CMD);
-}
-
-static void efm32_uart_break_ctl(struct uart_port *port, int ctl)
-{
- /* not possible without fiddling with gpios */
-}
-
-static void efm32_uart_rx_chars(struct efm32_uart_port *efm_port)
-{
- struct uart_port *port = &efm_port->port;
-
- while (efm32_uart_read32(efm_port, UARTn_STATUS) &
- UARTn_STATUS_RXDATAV) {
- u32 rxdata = efm32_uart_read32(efm_port, UARTn_RXDATAX);
- int flag = 0;
-
- /*
- * This is a reserved bit and I only saw it read as 0. But to be
- * sure not to be confused too much by new devices adhere to the
- * warning in the reference manual that reserved bits might
- * read as 1 in the future.
- */
- rxdata &= ~SW_UARTn_RXDATAX_BERR;
-
- port->icount.rx++;
-
- if ((rxdata & UARTn_RXDATAX_FERR) &&
- !(rxdata & UARTn_RXDATAX_RXDATA__MASK)) {
- rxdata |= SW_UARTn_RXDATAX_BERR;
- port->icount.brk++;
- if (uart_handle_break(port))
- continue;
- } else if (rxdata & UARTn_RXDATAX_PERR)
- port->icount.parity++;
- else if (rxdata & UARTn_RXDATAX_FERR)
- port->icount.frame++;
-
- rxdata &= port->read_status_mask;
-
- if (rxdata & SW_UARTn_RXDATAX_BERR)
- flag = TTY_BREAK;
- else if (rxdata & UARTn_RXDATAX_PERR)
- flag = TTY_PARITY;
- else if (rxdata & UARTn_RXDATAX_FERR)
- flag = TTY_FRAME;
- else if (uart_handle_sysrq_char(port,
- rxdata & UARTn_RXDATAX_RXDATA__MASK))
- continue;
-
- if ((rxdata & port->ignore_status_mask) == 0)
- tty_insert_flip_char(&port->state->port,
- rxdata & UARTn_RXDATAX_RXDATA__MASK, flag);
- }
-}
-
-static irqreturn_t efm32_uart_rxirq(int irq, void *data)
-{
- struct efm32_uart_port *efm_port = data;
- u32 irqflag = efm32_uart_read32(efm_port, UARTn_IF);
- int handled = IRQ_NONE;
- struct uart_port *port = &efm_port->port;
- struct tty_port *tport = &port->state->port;
-
- spin_lock(&port->lock);
-
- if (irqflag & UARTn_IF_RXDATAV) {
- efm32_uart_write32(efm_port, UARTn_IF_RXDATAV, UARTn_IFC);
- efm32_uart_rx_chars(efm_port);
-
- handled = IRQ_HANDLED;
- }
-
- if (irqflag & UARTn_IF_RXOF) {
- efm32_uart_write32(efm_port, UARTn_IF_RXOF, UARTn_IFC);
- port->icount.overrun++;
- tty_insert_flip_char(tport, 0, TTY_OVERRUN);
-
- handled = IRQ_HANDLED;
- }
-
- spin_unlock(&port->lock);
-
- tty_flip_buffer_push(tport);
-
- return handled;
-}
-
-static irqreturn_t efm32_uart_txirq(int irq, void *data)
-{
- struct efm32_uart_port *efm_port = data;
- u32 irqflag = efm32_uart_read32(efm_port, UARTn_IF);
-
- /* TXBL doesn't need to be cleared */
- if (irqflag & UARTn_IF_TXC)
- efm32_uart_write32(efm_port, UARTn_IF_TXC, UARTn_IFC);
-
- if (irqflag & (UARTn_IF_TXC | UARTn_IF_TXBL)) {
- efm32_uart_tx_chars(efm_port);
- return IRQ_HANDLED;
- } else
- return IRQ_NONE;
-}
-
-static int efm32_uart_startup(struct uart_port *port)
-{
- struct efm32_uart_port *efm_port = to_efm_port(port);
- int ret;
-
- ret = clk_enable(efm_port->clk);
- if (ret) {
- efm_debug(efm_port, "failed to enable clk\n");
- goto err_clk_enable;
- }
- port->uartclk = clk_get_rate(efm_port->clk);
-
- /* Enable pins at configured location */
- efm32_uart_write32(efm_port,
- UARTn_ROUTE_LOCATION(efm_port->pdata.location) |
- UARTn_ROUTE_RXPEN | UARTn_ROUTE_TXPEN,
- UARTn_ROUTE);
-
- ret = request_irq(port->irq, efm32_uart_rxirq, 0,
- DRIVER_NAME, efm_port);
- if (ret) {
- efm_debug(efm_port, "failed to register rxirq\n");
- goto err_request_irq_rx;
- }
-
- /* disable all irqs */
- efm32_uart_write32(efm_port, 0, UARTn_IEN);
-
- ret = request_irq(efm_port->txirq, efm32_uart_txirq, 0,
- DRIVER_NAME, efm_port);
- if (ret) {
- efm_debug(efm_port, "failed to register txirq\n");
- free_irq(port->irq, efm_port);
-err_request_irq_rx:
-
- clk_disable(efm_port->clk);
- } else {
- efm32_uart_write32(efm_port,
- UARTn_IF_RXDATAV | UARTn_IF_RXOF, UARTn_IEN);
- efm32_uart_write32(efm_port, UARTn_CMD_RXEN, UARTn_CMD);
- }
-
-err_clk_enable:
- return ret;
-}
-
-static void efm32_uart_shutdown(struct uart_port *port)
-{
- struct efm32_uart_port *efm_port = to_efm_port(port);
-
- efm32_uart_write32(efm_port, 0, UARTn_IEN);
- free_irq(port->irq, efm_port);
-
- clk_disable(efm_port->clk);
-}
-
-static void efm32_uart_set_termios(struct uart_port *port,
- struct ktermios *new, struct ktermios *old)
-{
- struct efm32_uart_port *efm_port = to_efm_port(port);
- unsigned long flags;
- unsigned baud;
- u32 clkdiv;
- u32 frame = 0;
-
- /* no modem control lines */
- new->c_cflag &= ~(CRTSCTS | CMSPAR);
-
- baud = uart_get_baud_rate(port, new, old,
- DIV_ROUND_CLOSEST(port->uartclk, 16 * 8192),
- DIV_ROUND_CLOSEST(port->uartclk, 16));
-
- switch (new->c_cflag & CSIZE) {
- case CS5:
- frame |= UARTn_FRAME_DATABITS(5);
- break;
- case CS6:
- frame |= UARTn_FRAME_DATABITS(6);
- break;
- case CS7:
- frame |= UARTn_FRAME_DATABITS(7);
- break;
- case CS8:
- frame |= UARTn_FRAME_DATABITS(8);
- break;
- }
-
- if (new->c_cflag & CSTOPB)
- /* the receiver only verifies the first stop bit */
- frame |= UARTn_FRAME_STOPBITS_TWO;
- else
- frame |= UARTn_FRAME_STOPBITS_ONE;
-
- if (new->c_cflag & PARENB) {
- if (new->c_cflag & PARODD)
- frame |= UARTn_FRAME_PARITY_ODD;
- else
- frame |= UARTn_FRAME_PARITY_EVEN;
- } else
- frame |= UARTn_FRAME_PARITY_NONE;
-
- /*
- * the 6 lowest bits of CLKDIV are dc, bit 6 has value 0.25.
- * port->uartclk <= 14e6, so 4 * port->uartclk doesn't overflow.
- */
- clkdiv = (DIV_ROUND_CLOSEST(4 * port->uartclk, 16 * baud) - 4) << 6;
-
- spin_lock_irqsave(&port->lock, flags);
-
- efm32_uart_write32(efm_port,
- UARTn_CMD_TXDIS | UARTn_CMD_RXDIS, UARTn_CMD);
-
- port->read_status_mask = UARTn_RXDATAX_RXDATA__MASK;
- if (new->c_iflag & INPCK)
- port->read_status_mask |=
- UARTn_RXDATAX_FERR | UARTn_RXDATAX_PERR;
- if (new->c_iflag & (IGNBRK | BRKINT | PARMRK))
- port->read_status_mask |= SW_UARTn_RXDATAX_BERR;
-
- port->ignore_status_mask = 0;
- if (new->c_iflag & IGNPAR)
- port->ignore_status_mask |=
- UARTn_RXDATAX_FERR | UARTn_RXDATAX_PERR;
- if (new->c_iflag & IGNBRK)
- port->ignore_status_mask |= SW_UARTn_RXDATAX_BERR;
-
- uart_update_timeout(port, new->c_cflag, baud);
-
- efm32_uart_write32(efm_port, UARTn_CTRL_TXBIL, UARTn_CTRL);
- efm32_uart_write32(efm_port, frame, UARTn_FRAME);
- efm32_uart_write32(efm_port, clkdiv, UARTn_CLKDIV);
-
- efm32_uart_write32(efm_port, UARTn_CMD_TXEN | UARTn_CMD_RXEN,
- UARTn_CMD);
-
- spin_unlock_irqrestore(&port->lock, flags);
-}
-
-static const char *efm32_uart_type(struct uart_port *port)
-{
- return port->type == PORT_EFMUART ? "efm32-uart" : NULL;
-}
-
-static void efm32_uart_release_port(struct uart_port *port)
-{
- struct efm32_uart_port *efm_port = to_efm_port(port);
-
- clk_unprepare(efm_port->clk);
- clk_put(efm_port->clk);
- iounmap(port->membase);
-}
-
-static int efm32_uart_request_port(struct uart_port *port)
-{
- struct efm32_uart_port *efm_port = to_efm_port(port);
- int ret;
-
- port->membase = ioremap(port->mapbase, 60);
- if (!efm_port->port.membase) {
- ret = -ENOMEM;
- efm_debug(efm_port, "failed to remap\n");
- goto err_ioremap;
- }
-
- efm_port->clk = clk_get(port->dev, NULL);
- if (IS_ERR(efm_port->clk)) {
- ret = PTR_ERR(efm_port->clk);
- efm_debug(efm_port, "failed to get clock\n");
- goto err_clk_get;
- }
-
- ret = clk_prepare(efm_port->clk);
- if (ret) {
- clk_put(efm_port->clk);
-err_clk_get:
-
- iounmap(port->membase);
-err_ioremap:
- return ret;
- }
- return 0;
-}
-
-static void efm32_uart_config_port(struct uart_port *port, int type)
-{
- if (type & UART_CONFIG_TYPE &&
- !efm32_uart_request_port(port))
- port->type = PORT_EFMUART;
-}
-
-static int efm32_uart_verify_port(struct uart_port *port,
- struct serial_struct *serinfo)
-{
- int ret = 0;
-
- if (serinfo->type != PORT_UNKNOWN && serinfo->type != PORT_EFMUART)
- ret = -EINVAL;
-
- return ret;
-}
-
-static const struct uart_ops efm32_uart_pops = {
- .tx_empty = efm32_uart_tx_empty,
- .set_mctrl = efm32_uart_set_mctrl,
- .get_mctrl = efm32_uart_get_mctrl,
- .stop_tx = efm32_uart_stop_tx,
- .start_tx = efm32_uart_start_tx,
- .stop_rx = efm32_uart_stop_rx,
- .break_ctl = efm32_uart_break_ctl,
- .startup = efm32_uart_startup,
- .shutdown = efm32_uart_shutdown,
- .set_termios = efm32_uart_set_termios,
- .type = efm32_uart_type,
- .release_port = efm32_uart_release_port,
- .request_port = efm32_uart_request_port,
- .config_port = efm32_uart_config_port,
- .verify_port = efm32_uart_verify_port,
-};
-
-static struct efm32_uart_port *efm32_uart_ports[5];
-
-#ifdef CONFIG_SERIAL_EFM32_UART_CONSOLE
-static void efm32_uart_console_putchar(struct uart_port *port, int ch)
-{
- struct efm32_uart_port *efm_port = to_efm_port(port);
- unsigned int timeout = 0x400;
- u32 status;
-
- while (1) {
- status = efm32_uart_read32(efm_port, UARTn_STATUS);
-
- if (status & UARTn_STATUS_TXBL)
- break;
- if (!timeout--)
- return;
- }
- efm32_uart_write32(efm_port, ch, UARTn_TXDATA);
-}
-
-static void efm32_uart_console_write(struct console *co, const char *s,
- unsigned int count)
-{
- struct efm32_uart_port *efm_port = efm32_uart_ports[co->index];
- u32 status = efm32_uart_read32(efm_port, UARTn_STATUS);
- unsigned int timeout = 0x400;
-
- if (!(status & UARTn_STATUS_TXENS))
- efm32_uart_write32(efm_port, UARTn_CMD_TXEN, UARTn_CMD);
-
- uart_console_write(&efm_port->port, s, count,
- efm32_uart_console_putchar);
-
- /* Wait for the transmitter to become empty */
- while (1) {
- u32 status = efm32_uart_read32(efm_port, UARTn_STATUS);
- if (status & UARTn_STATUS_TXC)
- break;
- if (!timeout--)
- break;
- }
-
- if (!(status & UARTn_STATUS_TXENS))
- efm32_uart_write32(efm_port, UARTn_CMD_TXDIS, UARTn_CMD);
-}
-
-static void efm32_uart_console_get_options(struct efm32_uart_port *efm_port,
- int *baud, int *parity, int *bits)
-{
- u32 ctrl = efm32_uart_read32(efm_port, UARTn_CTRL);
- u32 route, clkdiv, frame;
-
- if (ctrl & UARTn_CTRL_SYNC)
- /* not operating in async mode */
- return;
-
- route = efm32_uart_read32(efm_port, UARTn_ROUTE);
- if (!(route & UARTn_ROUTE_TXPEN))
- /* tx pin not routed */
- return;
-
- clkdiv = efm32_uart_read32(efm_port, UARTn_CLKDIV);
-
- *baud = DIV_ROUND_CLOSEST(4 * efm_port->port.uartclk,
- 16 * (4 + (clkdiv >> 6)));
-
- frame = efm32_uart_read32(efm_port, UARTn_FRAME);
- switch (frame & UARTn_FRAME_PARITY__MASK) {
- case UARTn_FRAME_PARITY_ODD:
- *parity = 'o';
- break;
- case UARTn_FRAME_PARITY_EVEN:
- *parity = 'e';
- break;
- default:
- *parity = 'n';
- }
-
- *bits = (frame & UARTn_FRAME_DATABITS__MASK) -
- UARTn_FRAME_DATABITS(4) + 4;
-
- efm_debug(efm_port, "get_opts: options=%d%c%d\n",
- *baud, *parity, *bits);
-}
-
-static int efm32_uart_console_setup(struct console *co, char *options)
-{
- struct efm32_uart_port *efm_port;
- int baud = 115200;
- int bits = 8;
- int parity = 'n';
- int flow = 'n';
- int ret;
-
- if (co->index < 0 || co->index >= ARRAY_SIZE(efm32_uart_ports)) {
- unsigned i;
- for (i = 0; i < ARRAY_SIZE(efm32_uart_ports); ++i) {
- if (efm32_uart_ports[i]) {
- pr_warn("efm32-console: fall back to console index %u (from %hhi)\n",
- i, co->index);
- co->index = i;
- break;
- }
- }
- }
-
- efm_port = efm32_uart_ports[co->index];
- if (!efm_port) {
- pr_warn("efm32-console: No port at %d\n", co->index);
- return -ENODEV;
- }
-
- ret = clk_prepare(efm_port->clk);
- if (ret) {
- dev_warn(efm_port->port.dev,
- "console: clk_prepare failed: %d\n", ret);
- return ret;
- }
-
- efm_port->port.uartclk = clk_get_rate(efm_port->clk);
-
- if (options)
- uart_parse_options(options, &baud, &parity, &bits, &flow);
- else
- efm32_uart_console_get_options(efm_port,
- &baud, &parity, &bits);
-
- return uart_set_options(&efm_port->port, co, baud, parity, bits, flow);
-}
-
-static struct uart_driver efm32_uart_reg;
-
-static struct console efm32_uart_console = {
- .name = DEV_NAME,
- .write = efm32_uart_console_write,
- .device = uart_console_device,
- .setup = efm32_uart_console_setup,
- .flags = CON_PRINTBUFFER,
- .index = -1,
- .data = &efm32_uart_reg,
-};
-
-#else
-#define efm32_uart_console (*(struct console *)NULL)
-#endif /* ifdef CONFIG_SERIAL_EFM32_UART_CONSOLE / else */
-
-static struct uart_driver efm32_uart_reg = {
- .owner = THIS_MODULE,
- .driver_name = DRIVER_NAME,
- .dev_name = DEV_NAME,
- .nr = ARRAY_SIZE(efm32_uart_ports),
- .cons = &efm32_uart_console,
-};
-
-static int efm32_uart_probe_dt(struct platform_device *pdev,
- struct efm32_uart_port *efm_port)
-{
- struct device_node *np = pdev->dev.of_node;
- u32 location;
- int ret;
-
- if (!np)
- return 1;
-
- ret = of_property_read_u32(np, "energymicro,location", &location);
-
- if (ret)
- /* fall back to wrongly namespaced property */
- ret = of_property_read_u32(np, "efm32,location", &location);
-
- if (ret)
- /* fall back to old and (wrongly) generic property "location" */
- ret = of_property_read_u32(np, "location", &location);
-
- if (!ret) {
- if (location > 5) {
- dev_err(&pdev->dev, "invalid location\n");
- return -EINVAL;
- }
- efm_debug(efm_port, "using location %u\n", location);
- efm_port->pdata.location = location;
- } else {
- efm_debug(efm_port, "fall back to location 0\n");
- }
-
- ret = of_alias_get_id(np, "serial");
- if (ret < 0) {
- dev_err(&pdev->dev, "failed to get alias id: %d\n", ret);
- return ret;
- } else {
- efm_port->port.line = ret;
- return 0;
- }
-
-}
-
-static int efm32_uart_probe(struct platform_device *pdev)
-{
- struct efm32_uart_port *efm_port;
- struct resource *res;
- unsigned int line;
- int ret;
-
- efm_port = kzalloc(sizeof(*efm_port), GFP_KERNEL);
- if (!efm_port) {
- dev_dbg(&pdev->dev, "failed to allocate private data\n");
- return -ENOMEM;
- }
-
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!res) {
- ret = -ENODEV;
- dev_dbg(&pdev->dev, "failed to determine base address\n");
- goto err_get_base;
- }
-
- if (resource_size(res) < 60) {
- ret = -EINVAL;
- dev_dbg(&pdev->dev, "memory resource too small\n");
- goto err_too_small;
- }
-
- ret = platform_get_irq(pdev, 0);
- if (ret <= 0) {
- dev_dbg(&pdev->dev, "failed to get rx irq\n");
- goto err_get_rxirq;
- }
-
- efm_port->port.irq = ret;
-
- ret = platform_get_irq(pdev, 1);
- if (ret <= 0)
- ret = efm_port->port.irq + 1;
-
- efm_port->txirq = ret;
-
- efm_port->port.dev = &pdev->dev;
- efm_port->port.mapbase = res->start;
- efm_port->port.type = PORT_EFMUART;
- efm_port->port.iotype = UPIO_MEM32;
- efm_port->port.fifosize = 2;
- efm_port->port.has_sysrq = IS_ENABLED(CONFIG_SERIAL_EFM32_UART_CONSOLE);
- efm_port->port.ops = &efm32_uart_pops;
- efm_port->port.flags = UPF_BOOT_AUTOCONF;
-
- ret = efm32_uart_probe_dt(pdev, efm_port);
- if (ret > 0) {
- /* not created by device tree */
- const struct efm32_uart_pdata *pdata = dev_get_platdata(&pdev->dev);
-
- efm_port->port.line = pdev->id;
-
- if (pdata)
- efm_port->pdata = *pdata;
- } else if (ret < 0)
- goto err_probe_dt;
-
- line = efm_port->port.line;
-
- if (line >= 0 && line < ARRAY_SIZE(efm32_uart_ports))
- efm32_uart_ports[line] = efm_port;
-
- ret = uart_add_one_port(&efm32_uart_reg, &efm_port->port);
- if (ret) {
- dev_dbg(&pdev->dev, "failed to add port: %d\n", ret);
-
- if (line >= 0 && line < ARRAY_SIZE(efm32_uart_ports))
- efm32_uart_ports[line] = NULL;
-err_probe_dt:
-err_get_rxirq:
-err_too_small:
-err_get_base:
- kfree(efm_port);
- } else {
- platform_set_drvdata(pdev, efm_port);
- dev_dbg(&pdev->dev, "\\o/\n");
- }
-
- return ret;
-}
-
-static int efm32_uart_remove(struct platform_device *pdev)
-{
- struct efm32_uart_port *efm_port = platform_get_drvdata(pdev);
- unsigned int line = efm_port->port.line;
-
- uart_remove_one_port(&efm32_uart_reg, &efm_port->port);
-
- if (line >= 0 && line < ARRAY_SIZE(efm32_uart_ports))
- efm32_uart_ports[line] = NULL;
-
- kfree(efm_port);
-
- return 0;
-}
-
-static const struct of_device_id efm32_uart_dt_ids[] = {
- {
- .compatible = "energymicro,efm32-uart",
- }, {
- /* doesn't follow the "vendor,device" scheme, don't use */
- .compatible = "efm32,uart",
- }, {
- /* sentinel */
- }
-};
-MODULE_DEVICE_TABLE(of, efm32_uart_dt_ids);
-
-static struct platform_driver efm32_uart_driver = {
- .probe = efm32_uart_probe,
- .remove = efm32_uart_remove,
-
- .driver = {
- .name = DRIVER_NAME,
- .of_match_table = efm32_uart_dt_ids,
- },
-};
-
-static int __init efm32_uart_init(void)
-{
- int ret;
-
- ret = uart_register_driver(&efm32_uart_reg);
- if (ret)
- return ret;
-
- ret = platform_driver_register(&efm32_uart_driver);
- if (ret)
- uart_unregister_driver(&efm32_uart_reg);
-
- pr_info("EFM32 UART/USART driver\n");
-
- return ret;
-}
-module_init(efm32_uart_init);
-
-static void __exit efm32_uart_exit(void)
-{
- platform_driver_unregister(&efm32_uart_driver);
- uart_unregister_driver(&efm32_uart_reg);
-}
-module_exit(efm32_uart_exit);
-
-MODULE_AUTHOR("Uwe Kleine-Koenig <u.kleine-koenig@pengutronix.de>");
-MODULE_DESCRIPTION("EFM32 UART/USART driver");
-MODULE_LICENSE("GPL v2");
-MODULE_ALIAS("platform:" DRIVER_NAME);
deleted file mode 100644
@@ -1,19 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-/*
- *
- *
- */
-#ifndef __LINUX_PLATFORM_DATA_EFM32_UART_H__
-#define __LINUX_PLATFORM_DATA_EFM32_UART_H__
-
-#include <linux/types.h>
-
-/**
- * struct efm32_uart_pdata
- * @location: pinmux location for the I/O pins (to be written to the ROUTE
- * register)
- */
-struct efm32_uart_pdata {
- u8 location;
-};
-#endif /* ifndef __LINUX_PLATFORM_DATA_EFM32_UART_H__ */
I didn't touch this code since it served as a platform to introduce ARMv7-M support to Linux. The only known machine that runs Linux has only 4 MiB of RAM (that originally only exists to hold the display's framebuffer). There are no known users and no further use foreseeable, so drop the code. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> --- arch/arm/Kconfig | 10 +- arch/arm/Kconfig.debug | 17 - arch/arm/Makefile | 1 - arch/arm/boot/dts/Makefile | 2 - arch/arm/boot/dts/efm32gg-dk3750.dts | 88 --- arch/arm/boot/dts/efm32gg.dtsi | 177 ----- arch/arm/configs/efm32_defconfig | 98 --- arch/arm/include/debug/efm32.S | 45 -- arch/arm/mach-efm32/Makefile | 2 - arch/arm/mach-efm32/Makefile.boot | 4 - arch/arm/mach-efm32/dtmachine.c | 16 - arch/arm/mm/Kconfig | 1 - drivers/tty/serial/efm32-uart.c | 852 ----------------------- include/linux/platform_data/efm32-uart.h | 19 - 14 files changed, 1 insertion(+), 1331 deletions(-) delete mode 100644 arch/arm/boot/dts/efm32gg-dk3750.dts delete mode 100644 arch/arm/boot/dts/efm32gg.dtsi delete mode 100644 arch/arm/configs/efm32_defconfig delete mode 100644 arch/arm/include/debug/efm32.S delete mode 100644 arch/arm/mach-efm32/Makefile delete mode 100644 arch/arm/mach-efm32/Makefile.boot delete mode 100644 arch/arm/mach-efm32/dtmachine.c delete mode 100644 drivers/tty/serial/efm32-uart.c delete mode 100644 include/linux/platform_data/efm32-uart.h