[PATCH 18/41] ARM: omap: remove debug-leds driver

Arnd Bergmann
2022-04-19T14:28:22Z

It has been impossible to select this driver for six years
without anyone noticing, so just kill it completely.

Fixes: 54ea18e8866a ("ARM: OMAP2+: Remove board file for H4")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
arch/arm/plat-omap/Kconfig | 10 --
arch/arm/plat-omap/Makefile | 4 -
arch/arm/plat-omap/debug-leds.c | 171 --------------------------------
3 files changed, 185 deletions(-)
delete mode 100644 arch/arm/plat-omap/debug-leds.c

diff --git a/arch/arm/plat-omap/Kconfig b/arch/arm/plat-omap/Kconfig
index dfa19d5030e3..dc53ea8e5bbb 100644
--- a/arch/arm/plat-omap/Kconfig
+++ b/arch/arm/plat-omap/Kconfig
@@ -11,16 +11,6 @@ config ARCH_OMAP_OTG

comment "OMAP Feature Selections"

-config OMAP_DEBUG_DEVICES
- bool
- help
- For debug cards on TI reference boards.
-
-config OMAP_DEBUG_LEDS
- def_bool y if NEW_LEDS
- depends on OMAP_DEBUG_DEVICES
- select LEDS_CLASS
-
config POWER_AVS_OMAP
bool "AVS(Adaptive Voltage Scaling) support for OMAP IP versions 1&2"
depends on (ARCH_OMAP3 || ARCH_OMAP4) && PM
diff --git a/arch/arm/plat-omap/Makefile b/arch/arm/plat-omap/Makefile
index 98a7b607873a..68ccec9de106 100644
--- a/arch/arm/plat-omap/Makefile
+++ b/arch/arm/plat-omap/Makefile
@@ -7,7 +7,3 @@ ccflags-$(CONFIG_ARCH_MULTIPLATFORM) := -I$(srctree)/arch/arm/plat-omap/include

# Common support
obj-y := sram.o dma.o
-
-# omap_device support (OMAP2+ only at the moment)
-
-obj-$(CONFIG_OMAP_DEBUG_LEDS) += debug-leds.o
diff --git a/arch/arm/plat-omap/debug-leds.c b/arch/arm/plat-omap/debug-leds.c
deleted file mode 100644
index 2b698d074874..000000000000
--- a/arch/arm/plat-omap/debug-leds.c
+++ /dev/null
@@ -1,171 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * linux/arch/arm/plat-omap/debug-leds.c
- *
- * Copyright 2011 by Bryan Wu <bryan.wu@canonical.com>
- * Copyright 2003 by Texas Instruments Incorporated
- */
-
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/platform_device.h>
-#include <linux/leds.h>
-#include <linux/io.h>
-#include <linux/platform_data/gpio-omap.h>
-#include <linux/slab.h>
-
-#include <asm/mach-types.h>
-
-/* Many OMAP development platforms reuse the same "debug board"; these
- * platforms include H2, H3, H4, and Perseus2. There are 16 LEDs on the
- * debug board (all green), accessed through FPGA registers.
- */
-
-/* NOTE: most boards don't have a static mapping for the FPGA ... */
-struct h2p2_dbg_fpga {
- /* offset 0x00 */
- u16 smc91x[8];
- /* offset 0x10 */
- u16 fpga_rev;
- u16 board_rev;
- u16 gpio_outputs;
- u16 leds;
- /* offset 0x18 */
- u16 misc_inputs;
- u16 lan_status;
- u16 lan_reset;
- u16 reserved0;
- /* offset 0x20 */
- u16 ps2_data;
- u16 ps2_ctrl;
- /* plus also 4 rs232 ports ... */
-};
-
-static struct h2p2_dbg_fpga __iomem *fpga;
-
-static u16 fpga_led_state;
-
-struct dbg_led {
- struct led_classdev cdev;
- u16 mask;
-};
-
-static const struct {
- const char *name;
- const char *trigger;
-} dbg_leds[] = {
- { "dbg:d4", "heartbeat", },
- { "dbg:d5", "cpu0", },
- { "dbg:d6", "default-on", },
- { "dbg:d7", },
- { "dbg:d8", },
- { "dbg:d9", },
- { "dbg:d10", },
- { "dbg:d11", },
- { "dbg:d12", },
- { "dbg:d13", },
- { "dbg:d14", },
- { "dbg:d15", },
- { "dbg:d16", },
- { "dbg:d17", },
- { "dbg:d18", },
- { "dbg:d19", },
-};
-
-/*
- * The triggers lines up below will only be used if the
- * LED triggers are compiled in.
- */
-static void dbg_led_set(struct led_classdev *cdev,
- enum led_brightness b)
-{
- struct dbg_led *led = container_of(cdev, struct dbg_led, cdev);
- u16 reg;
-
- reg = readw_relaxed(&fpga->leds);
- if (b != LED_OFF)
- reg |= led->mask;
- else
- reg &= ~led->mask;
- writew_relaxed(reg, &fpga->leds);
-}
-
-static enum led_brightness dbg_led_get(struct led_classdev *cdev)
-{
- struct dbg_led *led = container_of(cdev, struct dbg_led, cdev);
- u16 reg;
-
- reg = readw_relaxed(&fpga->leds);
- return (reg & led->mask) ? LED_FULL : LED_OFF;
-}
-
-static int fpga_probe(struct platform_device *pdev)
-{
- struct resource *iomem;
- int i;
-
- iomem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!iomem)
- return -ENODEV;
-
- fpga = ioremap(iomem->start, resource_size(iomem));
- writew_relaxed(0xff, &fpga->leds);
-
- for (i = 0; i < ARRAY_SIZE(dbg_leds); i++) {
- struct dbg_led *led;
-
- led = kzalloc(sizeof(*led), GFP_KERNEL);
- if (!led)
- break;
-
- led->cdev.name = dbg_leds[i].name;
- led->cdev.brightness_set = dbg_led_set;
- led->cdev.brightness_get = dbg_led_get;
- led->cdev.default_trigger = dbg_leds[i].trigger;
- led->mask = BIT(i);
-
- if (led_classdev_register(NULL, &led->cdev) < 0) {
- kfree(led);
- break;
- }
- }
-
- return 0;
-}
-
-static int fpga_suspend_noirq(struct device *dev)
-{
- fpga_led_state = readw_relaxed(&fpga->leds);
- writew_relaxed(0xff, &fpga->leds);
-
- return 0;
-}
-
-static int fpga_resume_noirq(struct device *dev)
-{
- writew_relaxed(~fpga_led_state, &fpga->leds);
- return 0;
-}
-
-static const struct dev_pm_ops fpga_dev_pm_ops = {
- .suspend_noirq = fpga_suspend_noirq,
- .resume_noirq = fpga_resume_noirq,
-};
-
-static struct platform_driver led_driver = {
- .driver.name = "omap_dbg_led",
- .driver.pm = &fpga_dev_pm_ops,
- .probe = fpga_probe,
-};
-
-static int __init fpga_init(void)
-{
- if (machine_is_omap_h4()
- || machine_is_omap_h3()
- || machine_is_omap_h2()
- || machine_is_omap_perseus2()
- )
- return platform_driver_register(&led_driver);
- return 0;
-}
-fs_initcall(fpga_init);