Commit 8795a739 authored by Christophe Leroy's avatar Christophe Leroy Committed by Michael Ellerman
Browse files

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: default avatarChristophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/bf930402613b41b42d0441b784e0cc43fc18d1fb.1572529632.git.christophe.leroy@c-s.fr
parent 6b7c095a

Documentation/devicetree/bindings/board/fsl-board.txt

+0 −30
Original line number Diff line number Diff line
@@ -47,36 +47,6 @@ Example (LS2080A-RDB): 
                reg = <0x3 0 0x10000>;

        };



* Freescale BCSR GPIO banks



Some BCSR registers act as simple GPIO controllers, each such

register can be represented by the gpio-controller node.



Required properities:

- compatible : Should be "fsl,<board>-bcsr-gpio".

- reg : Should contain the address and the length of the GPIO bank

  register.

- #gpio-cells : Should be two. The first cell is the pin number and the

  second cell is used to specify optional parameters (currently unused).

- gpio-controller : Marks the port as GPIO controller.



Example:



	bcsr@1,0 {

		#address-cells = <1>;

		#size-cells = <1>;

		compatible = "fsl,mpc8360mds-bcsr";

		reg = <1 0 0x8000>;

		ranges = <0 1 0 0x8000>;



		bcsr13: gpio-controller@d {

			#gpio-cells = <2>;

			compatible = "fsl,mpc8360mds-bcsr-gpio";

			reg = <0xd 1>;

			gpio-controller;

		};

	};



* Freescale on-board FPGA connected on I2C bus



Some Freescale boards like BSC9132QDS have on board FPGA connected on

arch/powerpc/configs/mpc5200_defconfig

+0 −1
Original line number Diff line number Diff line
@@ -15,7 +15,6 @@ CONFIG_PPC_MEDIA5200=y 
CONFIG_PPC_MPC5200_BUGFIX=y

CONFIG_PPC_MPC5200_LPBFIFO=m

# CONFIG_PPC_PMAC is not set

CONFIG_SIMPLE_GPIO=y

CONFIG_NET=y

CONFIG_PACKET=y

CONFIG_UNIX=y

arch/powerpc/platforms/83xx/mpc836x_mds.c

+0 −7
Original line number Diff line number Diff line
@@ -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);

arch/powerpc/platforms/85xx/mpc85xx_mds.c

+0 −6
Original line number Diff line number Diff line
@@ -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();

}

arch/powerpc/platforms/86xx/mpc8610_hpcd.c

+0 −4
Original line number Diff line number Diff line
@@ -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();

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