Commit ee40ceab authored by Sebastien Requiem's avatar Sebastien Requiem Committed by Nicolas Pitre
Browse files

[ARM] MV78XX0: MPP routines and definitions 

This patch is composed of two new files :

- mpp.c which is mainly inspired by the same file as in mach-kirkwood

- mpp.h that is written from the documentation provided by Marvell
http://www.marvell.com/products/processors/embedded/discovery_innovation/HW_MV78100_OpenSource.pdf



Moreover, due to some implementation problem, I have
defined some MPPX_UNUSED that offer developers the possibility
to SET MPP to some unused value (such as for Buffalo WXL).

Note: This patch doesn't support MV78200 yet (only 78100 MPP lines have
been written)

Signed-off-by: default avatarSebastien Requiem <sebastien@kolios.dk>
Signed-off-by: default avatarNicolas Pitre <nico@marvell.com>
parent d5b5746b

arch/arm/mach-mv78xx0/Makefile

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obj-y				+= common.o addr-map.o irq.o pcie.o

obj-y				+= common.o addr-map.o mpp.o irq.o pcie.o

obj-$(CONFIG_MACH_DB78X00_BP)	+= db78x00-bp-setup.o

obj-$(CONFIG_MACH_RD78X00_MASA)	+= rd78x00-masa-setup.o

arch/arm/mach-mv78xx0/mpp.c

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/*

 * arch/arm/mach-mv78x00/mpp.c

 *

 * MPP functions for Marvell MV78x00 SoCs

 *

 * This file is licensed under the terms of the GNU General Public

 * License version 2.  This program is licensed "as is" without any

 * warranty of any kind, whether express or implied.

 */



#include <linux/kernel.h>

#include <linux/init.h>

#include <linux/mbus.h>

#include <linux/io.h>

#include <asm/gpio.h>

#include <mach/hardware.h>

#include "common.h"

#include "mpp.h"



static unsigned int __init mv78xx0_variant(void)

{

	u32 dev, rev;



	mv78xx0_pcie_id(&dev, &rev);



	if (dev == MV78100_DEV_ID && rev >= MV78100_REV_A0)

		return MPP_78100_A0_MASK;



	printk(KERN_ERR "MPP setup: unknown mv78x00 variant "

			"(dev %#x rev %#x)\n", dev, rev);

	return 0;

}



#define MPP_CTRL(i)	(DEV_BUS_VIRT_BASE + (i) * 4)

#define MPP_NR_REGS	(1 + MPP_MAX/8)



void __init mv78xx0_mpp_conf(unsigned int *mpp_list)

{

	u32 mpp_ctrl[MPP_NR_REGS];

	unsigned int variant_mask;

	int i;



	variant_mask = mv78xx0_variant();

	if (!variant_mask)

		return;



	/* Initialize gpiolib. */

	orion_gpio_init();



	printk(KERN_DEBUG "initial MPP regs:");

	for (i = 0; i < MPP_NR_REGS; i++) {

		mpp_ctrl[i] = readl(MPP_CTRL(i));

		printk(" %08x", mpp_ctrl[i]);

	}

	printk("\n");



	while (*mpp_list) {

		unsigned int num = MPP_NUM(*mpp_list);

		unsigned int sel = MPP_SEL(*mpp_list);

		int shift, gpio_mode;



		if (num > MPP_MAX) {

			printk(KERN_ERR "mv78xx0_mpp_conf: invalid MPP "

					"number (%u)\n", num);

			continue;

		}

		if (!(*mpp_list & variant_mask)) {

			printk(KERN_WARNING

					"mv78xx0_mpp_conf: requested MPP%u config "

					"unavailable on this hardware\n", num);

			continue;

		}



		shift = (num & 7) << 2;

		mpp_ctrl[num / 8] &= ~(0xf << shift);

		mpp_ctrl[num / 8] |= sel << shift;



		gpio_mode = 0;

		if (*mpp_list & MPP_INPUT_MASK)

			gpio_mode |= GPIO_INPUT_OK;

		if (*mpp_list & MPP_OUTPUT_MASK)

			gpio_mode |= GPIO_OUTPUT_OK;

		if (sel != 0)

			gpio_mode = 0;

		orion_gpio_set_valid(num, gpio_mode);



		mpp_list++;

	}



	printk(KERN_DEBUG "  final MPP regs:");

	for (i = 0; i < MPP_NR_REGS; i++) {

		writel(mpp_ctrl[i], MPP_CTRL(i));

		printk(" %08x", mpp_ctrl[i]);

	}

	printk("\n");

}

arch/arm/mach-mv78xx0/mpp.h

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/*

 * linux/arch/arm/mach-mv78xx0/mpp.h -- Multi Purpose Pins

 *

 *

 * sebastien requiem <sebastien@requiem.fr>

 *

 * This file is licensed under the terms of the GNU General Public

 * License version 2.  This program is licensed "as is" without any

 * warranty of any kind, whether express or implied.

 */



#ifndef __MV78X00_MPP_H

#define __MV78X00_MPP_H



#define MPP(_num, _sel, _in, _out, _78100_A0) (\

    /* MPP number */        ((_num) & 0xff) | \

    /* MPP select value */        (((_sel) & 0xf) << 8) | \

    /* may be input signal */    ((!!(_in)) << 12) | \

    /* may be output signal */    ((!!(_out)) << 13) | \

    /* available on A0 */    ((!!(_78100_A0)) << 14))



#define MPP_NUM(x)    ((x) & 0xff)

#define MPP_SEL(x)    (((x) >> 8) & 0xf)



                /*   num sel  i  o  78100_A0  */



#define MPP_INPUT_MASK        MPP(0, 0x0, 1, 0, 0)

#define MPP_OUTPUT_MASK        MPP(0, 0x0, 0, 1, 0)



#define MPP_78100_A0_MASK    MPP(0, 0x0, 0, 0, 1)



#define MPP0_GPIO        MPP(0, 0x0, 1, 1, 1)

#define MPP0_GE0_COL        MPP(0, 0x1, 1, 0, 1)

#define MPP0_GE1_TXCLK        MPP(0, 0x2, 0, 1, 1)

#define MPP0_UNUSED        MPP(0, 0x3, 0, 0, 1)



#define MPP1_GPIO        MPP(1, 0x0, 1, 1, 1)

#define MPP1_GE0_RXERR        MPP(1, 0x1, 1, 0, 1)

#define MPP1_GE1_TXCTL        MPP(1, 0x2, 0, 1, 1)

#define MPP1_UNUSED        MPP(1, 0x3, 0, 0, 1)



#define MPP2_GPIO        MPP(2, 0x0, 1, 1, 1)

#define MPP2_GE0_CRS        MPP(2, 0x1, 1, 0, 1)

#define MPP2_GE1_RXCTL        MPP(2, 0x2, 1, 0, 1)

#define MPP2_UNUSED        MPP(2, 0x3, 0, 0, 1)



#define MPP3_GPIO        MPP(3, 0x0, 1, 1, 1)

#define MPP3_GE0_TXERR        MPP(3, 0x1, 0, 1, 1)

#define MPP3_GE1_RXCLK        MPP(3, 0x2, 1, 0, 1)

#define MPP3_UNUSED        MPP(3, 0x3, 0, 0, 1)



#define MPP4_GPIO        MPP(4, 0x0, 1, 1, 1)

#define MPP4_GE0_TXD4        MPP(4, 0x1, 0, 1, 1)

#define MPP4_GE1_TXD0        MPP(4, 0x2, 0, 1, 1)

#define MPP4_UNUSED        MPP(4, 0x3, 0, 0, 1)



#define MPP5_GPIO        MPP(5, 0x0, 1, 1, 1)

#define MPP5_GE0_TXD5        MPP(5, 0x1, 0, 1, 1)

#define MPP5_GE1_TXD1        MPP(5, 0x2, 0, 1, 1)

#define MPP5_UNUSED        MPP(5, 0x3, 0, 0, 1)



#define MPP6_GPIO        MPP(6, 0x0, 1, 1, 1)

#define MPP6_GE0_TXD6        MPP(6, 0x1, 0, 1, 1)

#define MPP6_GE1_TXD2        MPP(6, 0x2, 0, 1, 1)

#define MPP6_UNUSED        MPP(6, 0x3, 0, 0, 1)



#define MPP7_GPIO        MPP(7, 0x0, 1, 1, 1)

#define MPP7_GE0_TXD7        MPP(7, 0x1, 0, 1, 1)

#define MPP7_GE1_TXD3        MPP(7, 0x2, 0, 1, 1)

#define MPP7_UNUSED        MPP(7, 0x3, 0, 0, 1)



#define MPP8_GPIO        MPP(8, 0x0, 1, 1, 1)

#define MPP8_GE0_RXD4        MPP(8, 0x1, 1, 0, 1)

#define MPP8_GE1_RXD0        MPP(8, 0x2, 1, 0, 1)

#define MPP8_UNUSED        MPP(8, 0x3, 0, 0, 1)



#define MPP9_GPIO        MPP(9, 0x0, 1, 1, 1)

#define MPP9_GE0_RXD5        MPP(9, 0x1, 1, 0, 1)

#define MPP9_GE1_RXD1        MPP(9, 0x2, 1, 0, 1)

#define MPP9_UNUSED        MPP(9, 0x3, 0, 0, 1)



#define MPP10_GPIO        MPP(10, 0x0, 1, 1, 1)

#define MPP10_GE0_RXD6        MPP(10, 0x1, 1, 0, 1)

#define MPP10_GE1_RXD2        MPP(10, 0x2, 1, 0, 1)

#define MPP10_UNUSED        MPP(10, 0x3, 0, 0, 1)



#define MPP11_GPIO        MPP(11, 0x0, 1, 1, 1)

#define MPP11_GE0_RXD7        MPP(11, 0x1, 1, 0, 1)

#define MPP11_GE1_RXD3        MPP(11, 0x2, 1, 0, 1)

#define MPP11_UNUSED        MPP(11, 0x3, 0, 0, 1)



#define MPP12_GPIO        MPP(12, 0x0, 1, 1, 1)

#define MPP12_M_BB        MPP(12, 0x3, 1, 0, 1)

#define MPP12_UA0_CTSn        MPP(12, 0x4, 1, 0, 1)

#define MPP12_NAND_FLASH_REn0    MPP(12, 0x5, 0, 1, 1)

#define MPP12_TDM0_SCSn        MPP(12, 0X6, 0, 1, 1)

#define MPP12_UNUSED        MPP(12, 0x1, 0, 0, 1)



#define MPP13_GPIO        MPP(13, 0x0, 1, 1, 1)

#define MPP13_SYSRST_OUTn    MPP(13, 0x3, 0, 1, 1)

#define MPP13_UA0_RTSn        MPP(13, 0x4, 0, 1, 1)

#define MPP13_NAN_FLASH_WEn0    MPP(13, 0x5, 0, 1, 1)

#define MPP13_TDM_SCLK        MPP(13, 0x6, 0, 1, 1)

#define MPP13_UNUSED        MPP(13, 0x1, 0, 0, 1)



#define MPP14_GPIO        MPP(14, 0x0, 1, 1, 1)

#define MPP14_SATA1_ACTn    MPP(14, 0x3, 0, 1, 1)

#define MPP14_UA1_CTSn        MPP(14, 0x4, 1, 0, 1)

#define MPP14_NAND_FLASH_REn1    MPP(14, 0x5, 0, 1, 1)

#define MPP14_TDM_SMOSI        MPP(14, 0x6, 0, 1, 1)

#define MPP14_UNUSED        MPP(14, 0x1, 0, 0, 1)



#define MPP15_GPIO        MPP(15, 0x0, 1, 1, 1)

#define MPP15_SATA0_ACTn    MPP(15, 0x3, 0, 1, 1)

#define MPP15_UA1_RTSn        MPP(15, 0x4, 0, 1, 1)

#define MPP15_NAND_FLASH_WEn1    MPP(15, 0x5, 0, 1, 1)

#define MPP15_TDM_SMISO        MPP(15, 0x6, 1, 0, 1)

#define MPP15_UNUSED        MPP(15, 0x1, 0, 0, 1)



#define MPP16_GPIO        MPP(16, 0x0, 1, 1, 1)

#define MPP16_SATA1_PRESENTn    MPP(16, 0x3, 0, 1, 1)

#define MPP16_UA2_TXD        MPP(16, 0x4, 0, 1, 1)

#define MPP16_NAND_FLASH_REn3    MPP(16, 0x5, 0, 1, 1)

#define MPP16_TDM_INTn        MPP(16, 0x6, 1, 0, 1)

#define MPP16_UNUSED        MPP(16, 0x1, 0, 0, 1)





#define MPP17_GPIO        MPP(17, 0x0, 1, 1, 1)

#define MPP17_SATA0_PRESENTn    MPP(17, 0x3, 0, 1, 1)

#define MPP17_UA2_RXD        MPP(17, 0x4, 1, 0, 1)

#define MPP17_NAND_FLASH_WEn3    MPP(17, 0x5, 0, 1, 1)

#define MPP17_TDM_RSTn        MPP(17, 0x6, 0, 1, 1)

#define MPP17_UNUSED        MPP(17, 0x1, 0, 0, 1)





#define MPP18_GPIO        MPP(18, 0x0, 1, 1, 1)

#define MPP18_UA0_CTSn        MPP(18, 0x4, 1, 0, 1)

#define MPP18_BOOT_FLASH_REn    MPP(18, 0x5, 0, 1, 1)

#define MPP18_UNUSED        MPP(18, 0x1, 0, 0, 1)







#define MPP19_GPIO        MPP(19, 0x0, 1, 1, 1)

#define MPP19_UA0_CTSn        MPP(19, 0x4, 0, 1, 1)

#define MPP19_BOOT_FLASH_WEn    MPP(19, 0x5, 0, 1, 1)

#define MPP19_UNUSED        MPP(19, 0x1, 0, 0, 1)





#define MPP20_GPIO        MPP(20, 0x0, 1, 1, 1)

#define MPP20_UA1_CTSs        MPP(20, 0x4, 1, 0, 1)

#define MPP20_TDM_PCLK        MPP(20, 0x6, 1, 1, 0)

#define MPP20_UNUSED        MPP(20, 0x1, 0, 0, 1)







#define MPP21_GPIO        MPP(21, 0x0, 1, 1, 1)

#define MPP21_UA1_CTSs        MPP(21, 0x4, 0, 1, 1)

#define MPP21_TDM_FSYNC        MPP(21, 0x6, 1, 1, 0)

#define MPP21_UNUSED        MPP(21, 0x1, 0, 0, 1)







#define MPP22_GPIO        MPP(22, 0x0, 1, 1, 1)

#define MPP22_UA3_TDX        MPP(22, 0x4, 0, 1, 1)

#define MPP22_NAND_FLASH_REn2    MPP(22, 0x5, 0, 1, 1)

#define MPP22_TDM_DRX        MPP(22, 0x6, 1, 0, 1)

#define MPP22_UNUSED        MPP(22, 0x1, 0, 0, 1)







#define MPP23_GPIO        MPP(23, 0x0, 1, 1, 1)

#define MPP23_UA3_RDX        MPP(23, 0x4, 1, 0, 1)

#define MPP23_NAND_FLASH_WEn2    MPP(23, 0x5, 0, 1, 1)

#define MPP23_TDM_DTX        MPP(23, 0x6, 0, 1, 1)

#define MPP23_UNUSED        MPP(23, 0x1, 0, 0, 1)





#define MPP24_GPIO        MPP(24, 0x0, 1, 1, 1)

#define MPP24_UA2_TXD        MPP(24, 0x4, 0, 1, 1)

#define MPP24_TDM_INTn        MPP(24, 0x6, 1, 0, 1)

#define MPP24_UNUSED        MPP(24, 0x1, 0, 0, 1)





#define MPP25_GPIO        MPP(25, 0x0, 1, 1, 1)

#define MPP25_UA2_RXD        MPP(25, 0x4, 1, 0, 1)

#define MPP25_TDM_RSTn        MPP(25, 0x6, 0, 1, 1)

#define MPP25_UNUSED        MPP(25, 0x1, 0, 0, 1)





#define MPP26_GPIO        MPP(26, 0x0, 1, 1, 1)

#define MPP26_UA2_CTSn        MPP(26, 0x4, 1, 0, 1)

#define MPP26_TDM_PCLK        MPP(26, 0x6, 1, 1, 1)

#define MPP26_UNUSED        MPP(26, 0x1, 0, 0, 1)





#define MPP27_GPIO        MPP(27, 0x0, 1, 1, 1)

#define MPP27_UA2_RTSn        MPP(27, 0x4, 0, 1, 1)

#define MPP27_TDM_FSYNC        MPP(27, 0x6, 1, 1, 1)

#define MPP27_UNUSED        MPP(27, 0x1, 0, 0, 1)





#define MPP28_GPIO        MPP(28, 0x0, 1, 1, 1)

#define MPP28_UA3_TXD        MPP(28, 0x4, 0, 1, 1)

#define MPP28_TDM_DRX        MPP(28, 0x6, 1, 0, 1)

#define MPP28_UNUSED        MPP(28, 0x1, 0, 0, 1)



#define MPP29_GPIO        MPP(29, 0x0, 1, 1, 1)

#define MPP29_UA3_RXD        MPP(29, 0x4, 1, 0, 1)

#define MPP29_SYSRST_OUTn    MPP(29, 0x5, 0, 1, 1)

#define MPP29_TDM_DTX        MPP(29, 0x6, 0, 1, 1)

#define MPP29_UNUSED        MPP(29, 0x1, 0, 0, 1)



#define MPP30_GPIO        MPP(30, 0x0, 1, 1, 1)

#define MPP30_UA3_CTSn        MPP(30, 0x4, 1, 0, 1)

#define MPP30_UNUSED        MPP(30, 0x1, 0, 0, 1)



#define MPP31_GPIO        MPP(31, 0x0, 1, 1, 1)

#define MPP31_UA3_RTSn        MPP(31, 0x4, 0, 1, 1)

#define MPP31_TDM1_SCSn        MPP(31, 0x6, 0, 1, 1)

#define MPP31_UNUSED        MPP(31, 0x1, 0, 0, 1)





#define MPP32_GPIO        MPP(32, 0x1, 1, 1, 1)

#define MPP32_UA3_TDX        MPP(32, 0x4, 0, 1, 1)

#define MPP32_SYSRST_OUTn    MPP(32, 0x5, 0, 1, 1)

#define MPP32_TDM0_RXQ        MPP(32, 0x6, 0, 1, 1)

#define MPP32_UNUSED        MPP(32, 0x3, 0, 0, 1)





#define MPP33_GPIO        MPP(33, 0x1, 1, 1, 1)

#define MPP33_UA3_RDX        MPP(33, 0x4, 1, 0, 1)

#define MPP33_TDM0_TXQ        MPP(33, 0x6, 0, 1, 1)

#define MPP33_UNUSED        MPP(33, 0x3, 0, 0, 1)







#define MPP34_GPIO        MPP(34, 0x1, 1, 1, 1)

#define MPP34_UA2_TDX        MPP(34, 0x4, 0, 1, 1)

#define MPP34_TDM1_RXQ        MPP(34, 0x6, 0, 1, 1)

#define MPP34_UNUSED        MPP(34, 0x3, 0, 0, 1)







#define MPP35_GPIO        MPP(35, 0x1, 1, 1, 1)

#define MPP35_UA2_RDX        MPP(35, 0x4, 1, 0, 1)

#define MPP35_TDM1_TXQ        MPP(35, 0x6, 0, 1, 1)

#define MPP35_UNUSED        MPP(35, 0x3, 0, 0, 1)



#define MPP36_GPIO        MPP(36, 0x1, 1, 1, 1)

#define MPP36_UA0_CTSn        MPP(36, 0x2, 1, 0, 1)

#define MPP36_UA2_TDX        MPP(36, 0x4, 0, 1, 1)

#define MPP36_TDM0_SCSn        MPP(36, 0x6, 0, 1, 1)

#define MPP36_UNUSED        MPP(36, 0x3, 0, 0, 1)





#define MPP37_GPIO        MPP(37, 0x1, 1, 1, 1)

#define MPP37_UA0_RTSn        MPP(37, 0x2, 0, 1, 1)

#define MPP37_UA2_RXD        MPP(37, 0x4, 1, 0, 1)

#define MPP37_SYSRST_OUTn    MPP(37, 0x5, 0, 1, 1)

#define MPP37_TDM_SCLK        MPP(37, 0x6, 0, 1, 1)

#define MPP37_UNUSED        MPP(37, 0x3, 0, 0, 1)









#define MPP38_GPIO        MPP(38, 0x1, 1, 1, 1)

#define MPP38_UA1_CTSn        MPP(38, 0x2, 1, 0, 1)

#define MPP38_UA3_TXD        MPP(38, 0x4, 0, 1, 1)

#define MPP38_SYSRST_OUTn    MPP(38, 0x5, 0, 1, 1)

#define MPP38_TDM_SMOSI        MPP(38, 0x6, 0, 1, 1)

#define MPP38_UNUSED        MPP(38, 0x3, 0, 0, 1)









#define MPP39_GPIO        MPP(39, 0x1, 1, 1, 1)

#define MPP39_UA1_RTSn        MPP(39, 0x2, 0, 1, 1)

#define MPP39_UA3_RXD        MPP(39, 0x4, 1, 0, 1)

#define MPP39_SYSRST_OUTn    MPP(39, 0x5, 0, 1, 1)

#define MPP39_TDM_SMISO        MPP(39, 0x6, 1, 0, 1)

#define MPP39_UNUSED        MPP(39, 0x3, 0, 0, 1)







#define MPP40_GPIO        MPP(40, 0x1, 1, 1, 1)

#define MPP40_TDM_INTn        MPP(40, 0x6, 1, 0, 1)

#define MPP40_UNUSED        MPP(40, 0x0, 0, 0, 1)







#define MPP41_GPIO        MPP(41, 0x1, 1, 1, 1)

#define MPP41_TDM_RSTn        MPP(41, 0x6, 0, 1, 1)

#define MPP41_UNUSED        MPP(41, 0x0, 0, 0, 1)







#define MPP42_GPIO        MPP(42, 0x1, 1, 1, 1)

#define MPP42_TDM_PCLK        MPP(42, 0x6, 1, 1, 1)

#define MPP42_UNUSED        MPP(42, 0x0, 0, 0, 1)







#define MPP43_GPIO        MPP(43, 0x1, 1, 1, 1)

#define MPP43_TDM_FSYNC        MPP(43, 0x6, 1, 1, 1)

#define MPP43_UNUSED        MPP(43, 0x0, 0, 0, 1)







#define MPP44_GPIO        MPP(44, 0x1, 1, 1, 1)

#define MPP44_TDM_DRX        MPP(44, 0x6, 1, 0, 1)

#define MPP44_UNUSED        MPP(44, 0x0, 0, 0, 1)







#define MPP45_GPIO        MPP(45, 0x1, 1, 1, 1)

#define MPP45_SATA0_ACTn    MPP(45, 0x3, 0, 1, 1)

#define MPP45_TDM_DRX        MPP(45, 0x6, 0, 1, 1)

#define MPP45_UNUSED        MPP(45, 0x0, 0, 0, 1)





#define MPP46_GPIO        MPP(46, 0x1, 1, 1, 1)

#define MPP46_TDM_SCSn        MPP(46, 0x6, 0, 1, 1)

#define MPP46_UNUSED        MPP(46, 0x0, 0, 0, 1)





#define MPP47_GPIO        MPP(47, 0x1, 1, 1, 1)

#define MPP47_UNUSED        MPP(47, 0x0, 0, 0, 1)







#define MPP48_GPIO        MPP(48, 0x1, 1, 1, 1)

#define MPP48_SATA1_ACTn    MPP(48, 0x3, 0, 1, 1)

#define MPP48_UNUSED        MPP(48, 0x2, 0, 0, 1)







#define MPP49_GPIO        MPP(49, 0x1, 1, 1, 1)

#define MPP49_SATA0_ACTn    MPP(49, 0x3, 0, 1, 1)

#define MPP49_M_BB        MPP(49, 0x4, 1, 0, 1)

#define MPP49_UNUSED        MPP(49, 0x2, 0, 0, 1)





#define MPP_MAX            49



void mv78xx0_mpp_conf(unsigned int *mpp_list);



#endif

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