powerpc/sysdev: drop simple gpio

There is a config item CONFIG_SIMPLE_GPIO which
provides simple memory mapped GPIOs specific to powerpc.

However, the only platform which selects this option is
mpc5200, and this platform doesn't use it.

There are three boards calling simple_gpiochip_init(), but
as they don't select CONFIG_SIMPLE_GPIO, this is just a nop.

Simple_gpio is just redundant with the generic MMIO GPIO
driver which can be found in driver/gpio/ and selected via
CONFIG_GPIO_GENERIC_PLATFORM, so drop simple_gpio driver.

Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/bf930402613b41b42d0441b784e0cc43fc18d1fb.1572529632.git.christophe.leroy@c-s.fr

4 files changed, 0 insertions, 27 deletions

diff --git a/arch/powerpc/platforms/83xx/mpc836x_mds.c b/arch/powerpc/platforms/83xx/mpc836x_mds.c
index 4a4efa906d35..240a26d88b07 100644
--- a/arch/powerpc/platforms/83xx/mpc836x_mds.c
+++ b/arch/powerpc/platforms/83xx/mpc836x_mds.c
@@ -39,7 +39,6 @@
 #include <asm/udbg.h>
 #include <sysdev/fsl_soc.h>
 #include <sysdev/fsl_pci.h>
-#include <sysdev/simple_gpio.h>
 #include <soc/fsl/qe/qe.h>
 #include <soc/fsl/qe/qe_ic.h>
 
@@ -181,12 +180,6 @@ static int __init mpc836x_usb_cfg(void)
 		qe_usb_clock_set(QE_CLK21, 48000000);
 	} else {
 		setbits8(&bcsr[13], BCSR13_USBMODE);
-		/*
-		 * The BCSR GPIOs are used to control power and
-		 * speed of the USB transceiver. This is needed for
-		 * the USB Host only.
-		 */
-		simple_gpiochip_init("fsl,mpc8360mds-bcsr-gpio");
 	}
 
 	of_node_put(np);
diff --git a/arch/powerpc/platforms/85xx/mpc85xx_mds.c b/arch/powerpc/platforms/85xx/mpc85xx_mds.c
index 120633f99ea6..381a6ac8cb4b 100644
--- a/arch/powerpc/platforms/85xx/mpc85xx_mds.c
+++ b/arch/powerpc/platforms/85xx/mpc85xx_mds.c
@@ -43,7 +43,6 @@
 #include <asm/udbg.h>
 #include <sysdev/fsl_soc.h>
 #include <sysdev/fsl_pci.h>
-#include <sysdev/simple_gpio.h>
 #include <soc/fsl/qe/qe.h>
 #include <soc/fsl/qe/qe_ic.h>
 #include <asm/mpic.h>
@@ -350,11 +349,6 @@ machine_arch_initcall(mpc8569_mds, board_fixups);
 
 static int __init mpc85xx_publish_devices(void)
 {
-	if (machine_is(mpc8568_mds))
-		simple_gpiochip_init("fsl,mpc8568mds-bcsr-gpio");
-	if (machine_is(mpc8569_mds))
-		simple_gpiochip_init("fsl,mpc8569mds-bcsr-gpio");
-
 	return mpc85xx_common_publish_devices();
 }
 
diff --git a/arch/powerpc/platforms/86xx/mpc8610_hpcd.c b/arch/powerpc/platforms/86xx/mpc8610_hpcd.c
index 96b27f6fdd0f..7733d0607da2 100644
--- a/arch/powerpc/platforms/86xx/mpc8610_hpcd.c
+++ b/arch/powerpc/platforms/86xx/mpc8610_hpcd.c
@@ -34,7 +34,6 @@
 #include <linux/of_platform.h>
 #include <sysdev/fsl_pci.h>
 #include <sysdev/fsl_soc.h>
-#include <sysdev/simple_gpio.h>
 
 #include "mpc86xx.h"
 
@@ -93,9 +92,6 @@ static const struct of_device_id mpc8610_ids[] __initconst = {
 
 static int __init mpc8610_declare_of_platform_devices(void)
 {
-	/* Firstly, register PIXIS GPIOs. */
-	simple_gpiochip_init("fsl,fpga-pixis-gpio-bank");
-
 	/* Enable wakeup on PIXIS' event IRQ. */
 	mpc8610_suspend_init();
 
diff --git a/arch/powerpc/platforms/Kconfig b/arch/powerpc/platforms/Kconfig
index d82e3664ffdf..e28df298df56 100644
--- a/arch/powerpc/platforms/Kconfig
+++ b/arch/powerpc/platforms/Kconfig
@@ -303,16 +303,6 @@ config GEN_RTC
 	  replacing their get_rtc_time/set_rtc_time callbacks with
 	  a proper RTC device driver.
 
-config SIMPLE_GPIO
-	bool "Support for simple, memory-mapped GPIO controllers"
-	depends on PPC
-	select GPIOLIB
-	help
-	  Say Y here to support simple, memory-mapped GPIO controllers.
-	  These are usually BCSRs used to control board's switches, LEDs,
-	  chip-selects, Ethernet/USB PHY's power and various other small
-	  on-board peripherals.
-
 config MCU_MPC8349EMITX
 	bool "MPC8349E-mITX MCU driver"
 	depends on I2C=y && PPC_83xx