[ARM] Dove: add support for multi-purpose pins configuration

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

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

obj-$(CONFIG_MACH_DOVE_DB)	+= dove-db-setup.o

obj-$(CONFIG_MACH_CM_A510)	+= cm-a510.o

#define  DOVE_AU1_SPDIFO_GPIO_EN	(1 << 1)

#define  DOVE_NAND_GPIO_EN		(1 << 0)

#define DOVE_MPP_CTRL4_VIRT_BASE	(DOVE_GPIO_VIRT_BASE + 0x40)

#define  DOVE_SPI_GPIO_SEL		(1 << 5)

#define  DOVE_UART1_GPIO_SEL		(1 << 4)

#define  DOVE_AU1_GPIO_SEL		(1 << 3)

#define  DOVE_CAM_GPIO_SEL		(1 << 2)

#define  DOVE_SD1_GPIO_SEL		(1 << 1)

#define  DOVE_SD0_GPIO_SEL		(1 << 0)

/* Power Management */

#define DOVE_PMU_VIRT_BASE	(DOVE_SB_REGS_VIRT_BASE | 0xd0000)

#define DOVE_PMU_SIG_CTRL	(DOVE_PMU_VIRT_BASE + 0x802c)

/* Real Time Clock */

#define DOVE_RTC_PHYS_BASE	(DOVE_SB_REGS_PHYS_BASE | 0xd8500)

/*

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

 *

 * MPP functions for Marvell Dove 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/gpio.h>

#include <linux/io.h>

#include <mach/dove.h>

#include "mpp.h"

#define MPP_NR_REGS 4

#define MPP_CTRL(i)	((i) == 3 ?				\

			 DOVE_MPP_CTRL4_VIRT_BASE :		\

			 DOVE_MPP_VIRT_BASE + (i) * 4)

#define PMU_SIG_REGS 2

#define PMU_SIG_CTRL(i)	(DOVE_PMU_SIG_CTRL + (i) * 4)

struct dove_mpp_grp {

	int start;

	int end;

};

static struct dove_mpp_grp dove_mpp_grp[] = {

	[MPP_24_39] = {

		.start	= 24,

		.end	= 39,

	},

	[MPP_40_45] = {

		.start	= 40,

		.end	= 45,

	},

	[MPP_46_51] = {

		.start	= 40,

		.end	= 45,

	},

	[MPP_58_61] = {

		.start	= 58,

		.end	= 61,

	},

	[MPP_62_63] = {

		.start	= 62,

		.end	= 63,

	},

};

static void dove_mpp_gpio_mode(int start, int end, int gpio_mode)

{

	int i;

	for (i = start; i <= end; i++)

		orion_gpio_set_valid(i, gpio_mode);

}

static void dove_mpp_dump_regs(void)

{

#ifdef DEBUG

	int i;

	pr_debug("MPP_CTRL regs:");

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

		printk(" %08x", readl(MPP_CTRL(i)));

	printk("\n");

	pr_debug("PMU_SIG_CTRL regs:");

	for (i = 0; i < PMU_SIG_REGS; i++)

		printk(" %08x", readl(PMU_SIG_CTRL(i)));

	printk("\n");

	pr_debug("PMU_MPP_GENERAL_CTRL: %08x\n", readl(DOVE_PMU_MPP_GENERAL_CTRL));

	pr_debug("MPP_GENERAL: %08x\n", readl(DOVE_MPP_GENERAL_VIRT_BASE));

#endif

}

static void dove_mpp_cfg_nfc(int sel)

{

	u32 mpp_gen_cfg = readl(DOVE_MPP_GENERAL_VIRT_BASE);

	mpp_gen_cfg &= ~0x1;

	mpp_gen_cfg |= sel;

	writel(mpp_gen_cfg, DOVE_MPP_GENERAL_VIRT_BASE);

	dove_mpp_gpio_mode(64, 71, GPIO_OUTPUT_OK);

}

static void dove_mpp_cfg_au1(int sel)

{

	u32 mpp_ctrl4		= readl(DOVE_MPP_CTRL4_VIRT_BASE);

	u32 ssp_ctrl1 = readl(DOVE_SSP_CTRL_STATUS_1);

	u32 mpp_gen_ctrl = readl(DOVE_MPP_GENERAL_VIRT_BASE);

	u32 global_cfg_2 = readl(DOVE_GLOBAL_CONFIG_2);

	mpp_ctrl4 &= ~(DOVE_AU1_GPIO_SEL);

	ssp_ctrl1 &= ~(DOVE_SSP_ON_AU1);

	mpp_gen_ctrl &= ~(DOVE_AU1_SPDIFO_GPIO_EN);

	global_cfg_2 &= ~(DOVE_TWSI_OPTION3_GPIO);

	if (!sel || sel == 0x2)

		dove_mpp_gpio_mode(52, 57, 0);

	else

		dove_mpp_gpio_mode(52, 57, GPIO_OUTPUT_OK | GPIO_INPUT_OK);

	if (sel & 0x1) {

		global_cfg_2 |= DOVE_TWSI_OPTION3_GPIO;

		dove_mpp_gpio_mode(56, 57, 0);

	}

	if (sel & 0x2) {

		mpp_gen_ctrl |= DOVE_AU1_SPDIFO_GPIO_EN;

		dove_mpp_gpio_mode(57, 57, GPIO_OUTPUT_OK | GPIO_INPUT_OK);

	}

	if (sel & 0x4) {

		ssp_ctrl1 |= DOVE_SSP_ON_AU1;

		dove_mpp_gpio_mode(52, 55, 0);

	}

	if (sel & 0x8)

		mpp_ctrl4 |= DOVE_AU1_GPIO_SEL;

	writel(mpp_ctrl4, DOVE_MPP_CTRL4_VIRT_BASE);

	writel(ssp_ctrl1, DOVE_SSP_CTRL_STATUS_1);

	writel(mpp_gen_ctrl, DOVE_MPP_GENERAL_VIRT_BASE);

	writel(global_cfg_2, DOVE_GLOBAL_CONFIG_2);

}

static void dove_mpp_conf_grp(int num, int sel, u32 *mpp_ctrl)

{

	int start = dove_mpp_grp[num].start;

	int end = dove_mpp_grp[num].end;

	int gpio_mode = sel ? GPIO_OUTPUT_OK | GPIO_INPUT_OK : 0;

	*mpp_ctrl &= ~(0x1 << num);

	*mpp_ctrl |= sel << num;

	dove_mpp_gpio_mode(start, end, gpio_mode);

}

void __init dove_mpp_conf(unsigned int *mpp_list)

{

	u32 mpp_ctrl[MPP_NR_REGS];

	u32 pmu_mpp_ctrl = 0;

	u32 pmu_sig_ctrl[PMU_SIG_REGS];

	int i;

	/* Initialize gpiolib. */

	orion_gpio_init();

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

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

	for (i = 0; i < PMU_SIG_REGS; i++)

		pmu_sig_ctrl[i] = readl(PMU_SIG_CTRL(i));

	pmu_mpp_ctrl = readl(DOVE_PMU_MPP_GENERAL_CTRL);

	dove_mpp_dump_regs();

	for ( ; *mpp_list != MPP_END; mpp_list++) {

		unsigned int num = MPP_NUM(*mpp_list);

		unsigned int sel = MPP_SEL(*mpp_list);

		int shift, gpio_mode;

		if (num > MPP_MAX) {

			pr_err("dove: invalid MPP number (%u)\n", num);

			continue;

		}

		if (*mpp_list & MPP_NFC_MASK) {

			dove_mpp_cfg_nfc(sel);

			continue;

		}

		if (*mpp_list & MPP_AU1_MASK) {

			dove_mpp_cfg_au1(sel);

			continue;

		}

		if (*mpp_list & MPP_GRP_MASK) {

			dove_mpp_conf_grp(num, sel, &mpp_ctrl[3]);

			continue;

		}

		shift = (num & 7) << 2;

		if (*mpp_list & MPP_PMU_MASK) {

			pmu_mpp_ctrl |= (0x1 << num);

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

			pmu_sig_ctrl[num / 8] |= 0xf << shift;

			gpio_mode = 0;

		} else {

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

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

			gpio_mode = GPIO_OUTPUT_OK | GPIO_INPUT_OK;

		}

		orion_gpio_set_valid(num, gpio_mode);

	}

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

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

	for (i = 0; i < PMU_SIG_REGS; i++)

		writel(pmu_sig_ctrl[i], PMU_SIG_CTRL(i));

	writel(pmu_mpp_ctrl, DOVE_PMU_MPP_GENERAL_CTRL);

	dove_mpp_dump_regs();

}

#ifndef __ARCH_DOVE_MPP_CODED_H

#define __ARCH_DOVE_MPP_CODED_H

#define MPP(_num, _mode, _pmu, _grp, _au1, _nfc) (	\

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

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

/* MPP PMU */			((!!(_pmu)) << 12) |		\

/* group flag */		((!!(_grp)) << 13) |		\

/* AU1 flag */			((!!(_au1)) << 14) |		\

/* NFCE flag */			((!!(_nfc)) << 15))

#define MPP_MAX	71

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

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

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

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

#define MPP_AU1_MASK		MPP(0, 0x0, 0, 0, 1, 0)

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

#define MPP_END			MPP(0xff, 0xf, 1, 1, 1, 1)

#define MPP_PMU_DRIVE_0		0x1

#define MPP_PMU_DRIVE_1		0x2

#define MPP_PMU_SDI		0x3

#define MPP_PMU_CPU_PWRDWN	0x4

#define MPP_PMU_STBY_PWRDWN	0x5

#define MPP_PMU_CORE_PWR_GOOD	0x8

#define MPP_PMU_BAT_FAULT	0xa

#define MPP_PMU_EXT0_WU		0xb

#define MPP_PMU_EXT1_WU		0xc

#define MPP_PMU_EXT2_WU		0xd

#define MPP_PMU_BLINK		0xe

#define MPP_PMU(_num, _mode)	MPP((_num), MPP_PMU_##_mode, 1, 0, 0, 0)

#define MPP_PIN(_num, _mode)	MPP((_num), (_mode), 0, 0, 0, 0)

#define MPP_GRP(_grp, _mode)	MPP((_grp), (_mode), 0, 1, 0, 0)

#define MPP_GRP_AU1(_mode)	MPP(0, (_mode), 0, 0, 1, 0)

#define MPP_GRP_NFC(_mode)	MPP(0, (_mode), 0, 0, 0, 1)

#define MPP0_GPIO0		MPP_PIN(0, 0x0)

#define MPP0_UA2_RTSn		MPP_PIN(0, 0x2)

#define MPP0_SDIO0_CD		MPP_PIN(0, 0x3)

#define MPP0_LCD0_PWM		MPP_PIN(0, 0xf)

#define MPP1_GPIO1		MPP_PIN(1, 0x0)

#define MPP1_UA2_CTSn		MPP_PIN(1, 0x2)

#define MPP1_SDIO0_WP		MPP_PIN(1, 0x3)

#define MPP1_LCD1_PWM		MPP_PIN(1, 0xf)

#define MPP2_GPIO2		MPP_PIN(2, 0x0)

#define MPP2_SATA_PRESENT	MPP_PIN(2, 0x1)

#define MPP2_UA2_TXD		MPP_PIN(2, 0x2)

#define MPP2_SDIO0_BUS_POWER	MPP_PIN(2, 0x3)

#define MPP2_UA_RTSn1		MPP_PIN(2, 0x4)

#define MPP3_GPIO3		MPP_PIN(3, 0x0)

#define MPP3_SATA_ACT		MPP_PIN(3, 0x1)

#define MPP3_UA2_RXD		MPP_PIN(3, 0x2)

#define MPP3_SDIO0_LED_CTRL	MPP_PIN(3, 0x3)

#define MPP3_UA_CTSn1		MPP_PIN(3, 0x4)

#define MPP3_SPI_LCD_CS1	MPP_PIN(3, 0xf)

#define MPP4_GPIO4		MPP_PIN(4, 0x0)

#define MPP4_UA3_RTSn		MPP_PIN(4, 0x2)

#define MPP4_SDIO1_CD		MPP_PIN(4, 0x3)

#define MPP4_SPI_1_MISO		MPP_PIN(4, 0x4)

#define MPP5_GPIO5		MPP_PIN(5, 0x0)

#define MPP5_UA3_CTSn		MPP_PIN(5, 0x2)

#define MPP5_SDIO1_WP		MPP_PIN(5, 0x3)

#define MPP5_SPI_1_CS		MPP_PIN(5, 0x4)

#define MPP6_GPIO6		MPP_PIN(6, 0x0)

#define MPP6_UA3_TXD		MPP_PIN(6, 0x2)

#define MPP6_SDIO1_BUS_POWER	MPP_PIN(6, 0x3)

#define MPP6_SPI_1_MOSI		MPP_PIN(6, 0x4)

#define MPP7_GPIO7		MPP_PIN(7, 0x0)

#define MPP7_UA3_RXD		MPP_PIN(7, 0x2)

#define MPP7_SDIO1_LED_CTRL	MPP_PIN(7, 0x3)

#define MPP7_SPI_1_SCK		MPP_PIN(7, 0x4)

#define MPP8_GPIO8		MPP_PIN(8, 0x0)

#define MPP8_WD_RST_OUT		MPP_PIN(8, 0x1)

#define MPP9_GPIO9		MPP_PIN(9, 0x0)

#define MPP9_PEX1_CLKREQn	MPP_PIN(9, 0x5)

#define MPP10_GPIO10		MPP_PIN(10, 0x0)

#define MPP10_SSP_SCLK		MPP_PIN(10, 0x5)

#define MPP11_GPIO11		MPP_PIN(11, 0x0)

#define MPP11_SATA_PRESENT	MPP_PIN(11, 0x1)

#define MPP11_SATA_ACT		MPP_PIN(11, 0x2)

#define MPP11_SDIO0_LED_CTRL	MPP_PIN(11, 0x3)

#define MPP11_SDIO1_LED_CTRL	MPP_PIN(11, 0x4)

#define MPP11_PEX0_CLKREQn	MPP_PIN(11, 0x5)

#define MPP12_GPIO12		MPP_PIN(12, 0x0)

#define MPP12_SATA_ACT		MPP_PIN(12, 0x1)

#define MPP12_UA2_RTSn		MPP_PIN(12, 0x2)

#define MPP12_AD0_I2S_EXT_MCLK	MPP_PIN(12, 0x3)

#define MPP12_SDIO1_CD		MPP_PIN(12, 0x4)

#define MPP13_GPIO13		MPP_PIN(13, 0x0)

#define MPP13_UA2_CTSn		MPP_PIN(13, 0x2)

#define MPP13_AD1_I2S_EXT_MCLK	MPP_PIN(13, 0x3)

#define MPP13_SDIO1WP		MPP_PIN(13, 0x4)

#define MPP13_SSP_EXTCLK	MPP_PIN(13, 0x5)

#define MPP14_GPIO14		MPP_PIN(14, 0x0)

#define MPP14_UA2_TXD		MPP_PIN(14, 0x2)

#define MPP14_SDIO1_BUS_POWER	MPP_PIN(14, 0x4)

#define MPP14_SSP_RXD		MPP_PIN(14, 0x5)

#define MPP15_GPIO15		MPP_PIN(15, 0x0)

#define MPP15_UA2_RXD		MPP_PIN(15, 0x2)

#define MPP15_SDIO1_LED_CTRL	MPP_PIN(15, 0x4)

#define MPP15_SSP_SFRM		MPP_PIN(15, 0x5)

#define MPP16_GPIO16		MPP_PIN(16, 0x0)

#define MPP16_UA3_RTSn		MPP_PIN(16, 0x2)

#define MPP16_SDIO0_CD		MPP_PIN(16, 0x3)

#define MPP16_SPI_LCD_CS1	MPP_PIN(16, 0x4)

#define MPP16_AC97_SDATA_IN1	MPP_PIN(16, 0x5)

#define MPP17_GPIO17		MPP_PIN(17, 0x0)

#define MPP17_AC97_SYSCLK_OUT	MPP_PIN(17, 0x1)

#define MPP17_UA3_CTSn		MPP_PIN(17, 0x2)

#define MPP17_SDIO0_WP		MPP_PIN(17, 0x3)

#define MPP17_TW_SDA2		MPP_PIN(17, 0x4)

#define MPP17_AC97_SDATA_IN2	MPP_PIN(17, 0x5)

#define MPP18_GPIO18		MPP_PIN(18, 0x0)

#define MPP18_UA3_TXD		MPP_PIN(18, 0x2)

#define MPP18_SDIO0_BUS_POWER	MPP_PIN(18, 0x3)

#define MPP18_LCD0_PWM		MPP_PIN(18, 0x4)

#define MPP18_AC_SDATA_IN3	MPP_PIN(18, 0x5)

#define MPP19_GPIO19		MPP_PIN(19, 0x0)

#define MPP19_UA3_RXD		MPP_PIN(19, 0x2)

#define MPP19_SDIO0_LED_CTRL	MPP_PIN(19, 0x3)

#define MPP19_TW_SCK2		MPP_PIN(19, 0x4)

#define MPP20_GPIO20		MPP_PIN(20, 0x0)

#define MPP20_AC97_SYSCLK_OUT	MPP_PIN(20, 0x1)

#define MPP20_SPI_LCD_MISO	MPP_PIN(20, 0x2)

#define MPP20_SDIO1_CD		MPP_PIN(20, 0x3)

#define MPP20_SDIO0_CD		MPP_PIN(20, 0x5)

#define MPP20_SPI_1_MISO	MPP_PIN(20, 0x6)

#define MPP21_GPIO21		MPP_PIN(21, 0x0)

#define MPP21_UA1_RTSn		MPP_PIN(21, 0x1)

#define MPP21_SPI_LCD_CS0	MPP_PIN(21, 0x2)

#define MPP21_SDIO1_WP		MPP_PIN(21, 0x3)

#define MPP21_SSP_SFRM		MPP_PIN(21, 0x4)

#define MPP21_SDIO0_WP		MPP_PIN(21, 0x5)

#define MPP21_SPI_1_CS		MPP_PIN(21, 0x6)

#define MPP22_GPIO22		MPP_PIN(22, 0x0)

#define MPP22_UA1_CTSn		MPP_PIN(22, 0x1)

#define MPP22_SPI_LCD_MOSI	MPP_PIN(22, 0x2)

#define MPP22_SDIO1_BUS_POWER	MPP_PIN(22, 0x3)

#define MPP22_SSP_TXD		MPP_PIN(22, 0x4)

#define MPP22_SDIO0_BUS_POWER	MPP_PIN(22, 0x5)

#define MPP22_SPI_1_MOSI	MPP_PIN(22, 0x6)

#define MPP23_GPIO23		MPP_PIN(23, 0x0)

#define MPP23_SPI_LCD_SCK	MPP_PIN(23, 0x2)

#define MPP23_SDIO1_LED_CTRL	MPP_PIN(23, 0x3)

#define MPP23_SSP_SCLK		MPP_PIN(23, 0x4)

#define MPP23_SDIO0_LED_CTRL	MPP_PIN(23, 0x5)

#define MPP23_SPI_1_SCK		MPP_PIN(23, 0x6)

/* for MPP groups _num is a group index */

enum dove_mpp_grp_idx {

	MPP_24_39 = 2,

	MPP_40_45 = 0,

	MPP_46_51 = 1,

	MPP_58_61 = 5,

	MPP_62_63 = 4,

};

#define MPP24_39_GPIO		MPP_GRP(MPP_24_39, 0x1)

#define MPP24_39_CAM		MPP_GRP(MPP_24_39, 0x0)

#define MPP40_45_GPIO		MPP_GRP(MPP_40_45, 0x1)

#define MPP40_45_SD0		MPP_GRP(MPP_40_45, 0x0)

#define MPP46_51_GPIO		MPP_GRP(MPP_46_51, 0x1)

#define MPP46_51_SD1		MPP_GRP(MPP_46_51, 0x0)

#define MPP58_61_GPIO		MPP_GRP(MPP_58_61, 0x1)

#define MPP58_61_SPI		MPP_GRP(MPP_58_61, 0x0)

#define MPP62_63_GPIO		MPP_GRP(MPP_62_63, 0x1)

#define MPP62_63_UA1		MPP_GRP(MPP_62_63, 0x0)

/* The MPP[64:71] control differs from other groups */

#define MPP64_71_GPO		MPP_GRP_NFC(0x1)

#define MPP64_71_NFC		MPP_GRP_NFC(0x0)

/*

 * The MPP[52:57] functionality is encoded by 4 bits in different

 * registers. The _num field in this case encodes those bits in

 * correspodence with Table 135 of 88AP510 Functional specification

 */

#define MPP52_57_AU1		MPP_GRP_AU1(0x0)

#define MPP52_57_AU1_GPIO57	MPP_GRP_AU1(0x2)

#define MPP52_57_GPIO		MPP_GRP_AU1(0xa)

#define MPP52_57_TW_GPIO	MPP_GRP_AU1(0xb)

#define MPP52_57_AU1_SSP	MPP_GRP_AU1(0xc)

#define MPP52_57_SSP_GPIO	MPP_GRP_AU1(0xe)

#define MPP52_57_SSP_TW		MPP_GRP_AU1(0xf)

void dove_mpp_conf(unsigned int *mpp_list);

#endif	/* __ARCH_DOVE_MPP_CODED_H */