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rtc: jz4740: make the driver buildable as a module again

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By using kernel_halt() instead of machine_halt(), we can make the driver
build as a module.
However, jz4740 platforms not loading this module will not be able to power
off.

Suggested-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Alexandre Belloni <alexandre.belloni@free-electrons.com>

Revert "rtc: jz4740: make the driver builtin only"

This reverts commit b9168c539c.
This commit is contained in:
Alexandre Belloni 2017-01-25 00:44:16 +01:00
parent 7ce7d89f48
commit 586655d278
2 changed files with 14 additions and 3 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

5
drivers/rtc/Kconfig
View file

@ -1551,12 +1551,15 @@ config RTC_DRV_MPC5121
will be called rtc-mpc5121. will be called rtc-mpc5121.
config RTC_DRV_JZ4740 config RTC_DRV_JZ4740
bool "Ingenic JZ4740 SoC" tristate "Ingenic JZ4740 SoC"
depends on MACH_INGENIC || COMPILE_TEST depends on MACH_INGENIC || COMPILE_TEST
help help
If you say yes here you get support for the Ingenic JZ47xx SoCs RTC If you say yes here you get support for the Ingenic JZ47xx SoCs RTC
controllers. controllers.
This driver can also be buillt as a module. If so, the module
will be called rtc-jz4740.
config RTC_DRV_LPC24XX config RTC_DRV_LPC24XX
tristate "NXP RTC for LPC178x/18xx/408x/43xx" tristate "NXP RTC for LPC178x/18xx/408x/43xx"
depends on ARCH_LPC18XX || COMPILE_TEST depends on ARCH_LPC18XX || COMPILE_TEST

12
drivers/rtc/rtc-jz4740.c
View file

@ -17,6 +17,7 @@
#include <linux/clk.h> #include <linux/clk.h>
#include <linux/io.h> #include <linux/io.h>
#include <linux/kernel.h> #include <linux/kernel.h>
#include <linux/module.h>
#include <linux/of_device.h> #include <linux/of_device.h>
#include <linux/platform_device.h> #include <linux/platform_device.h>
#include <linux/reboot.h> #include <linux/reboot.h>
@ -294,7 +295,7 @@ static void jz4740_rtc_power_off(void)
JZ_REG_RTC_RESET_COUNTER, reset_counter_ticks); JZ_REG_RTC_RESET_COUNTER, reset_counter_ticks);
jz4740_rtc_poweroff(dev_for_power_off); jz4740_rtc_poweroff(dev_for_power_off);
machine_halt(); kernel_halt();
} }
static const struct of_device_id jz4740_rtc_of_match[] = { static const struct of_device_id jz4740_rtc_of_match[] = {
@ -302,6 +303,7 @@ static const struct of_device_id jz4740_rtc_of_match[] = {
{ .compatible = "ingenic,jz4780-rtc", .data = (void *)ID_JZ4780 }, { .compatible = "ingenic,jz4780-rtc", .data = (void *)ID_JZ4780 },
{}, {},
}; };
MODULE_DEVICE_TABLE(of, jz4740_rtc_of_match);
static int jz4740_rtc_probe(struct platform_device *pdev) static int jz4740_rtc_probe(struct platform_device *pdev)
{ {
@ -429,6 +431,7 @@ static const struct platform_device_id jz4740_rtc_ids[] = {
{ "jz4780-rtc", ID_JZ4780 }, { "jz4780-rtc", ID_JZ4780 },
{} {}
}; };
MODULE_DEVICE_TABLE(platform, jz4740_rtc_ids);
static struct platform_driver jz4740_rtc_driver = { static struct platform_driver jz4740_rtc_driver = {
.probe = jz4740_rtc_probe, .probe = jz4740_rtc_probe,
@ -440,4 +443,9 @@ static struct platform_driver jz4740_rtc_driver = {
.id_table = jz4740_rtc_ids, .id_table = jz4740_rtc_ids,
}; };
builtin_platform_driver(jz4740_rtc_driver); module_platform_driver(jz4740_rtc_driver);
MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("RTC driver for the JZ4740 SoC\n");
MODULE_ALIAS("platform:jz4740-rtc");