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path: root/drivers/vme
AgeCommit message (Expand)Author
2018-09-14vme: remove unneeded kfreeDing Xiang
2018-07-16vme: ca91cx42: remove redundant variable iColin Ian King
2017-12-18vme: Fix a possible sleep-in-atomic bug in vme_tsi148Jia-Ju Bai
2017-11-16Merge tag 'char-misc-4.15-rc1' of ssh://gitolite.kernel.org/pub/scm/linux/ker...Linus Torvalds
2017-11-08VME: Return -EBUSY when DMA list in useMartyn Welch
2017-11-02License cleanup: add SPDX GPL-2.0 license identifier to files with no licenseGreg Kroah-Hartman
2017-10-20Merge tag 'vme-next-4.14-rc4' of https://gitlab.collabora.com/martyn/linux in...Greg Kroah-Hartman
2017-10-13vme: tsi148: Adjust 14 checks for null pointersMarkus Elfring
2017-10-13vme: tsi148: Improve 17 size determinationsMarkus Elfring
2017-10-13vme: tsi148: Delete nine error messages for a failed memory allocationMarkus Elfring
2017-10-13vme: ca91cx42: Adjust 14 checks for null pointersMarkus Elfring
2017-10-13vme: ca91cx42: Improve 12 size determinationsMarkus Elfring
2017-10-13vme: ca91cx42: Delete eight error messages for a failed memory allocationMarkus Elfring
2017-10-13vme: fake: Adjust 11 checks for null pointersMarkus Elfring
2017-10-13vme: fake: Improve five size determinations in fake_init()Markus Elfring
2017-10-13vme: fake: Delete an error message for a failed memory allocation in fake_init()Markus Elfring
2017-10-13vme: Return directly in two functionsMarkus Elfring
2017-10-13vme: Adjust 48 checks for null pointersMarkus Elfring
2017-10-13vme: Move an assignment in vme_new_dma_list()Markus Elfring
2017-10-13vme: Improve 11 size determinationsMarkus Elfring
2017-10-13vme: Delete 11 error messages for a failed memory allocationMarkus Elfring
2017-10-04vme: Fix integer overflow checking in vme_check_window()Dan Carpenter
2017-03-17docs: Add kernel-doc comments to VME driver APIMartyn Welch
2017-01-25VME: restore bus_remove function causing incomplete module unloadStefano Babic
2017-01-11vme: Fix wrong pointer utilization in ca91cx42_slave_getAugusto Mecking Caringi
2016-10-28vme: vme_get_size potentially returning incorrect value on failureMartyn Welch
2016-09-27vme: fake: remove unexpected unlock in fake_master_set()Wei Yongjun
2016-09-27vme: fake: mark symbols static where possibleBaoyou Xie
2016-09-13vme: fake: fix build for 64-bit dma_addr_tArnd Bergmann
2016-08-31vme: Adding Fake VME driverMartyn Welch
2016-08-31vme: make core vme support explicitly non-modularPaul Gortmaker
2016-08-31vme: Fix module autoloadAlessio Igor Bogani
2016-08-31vme: change LM callback argument to void pointerAaron Sierra
2016-05-01vme: add vme_init_bridge for common bridge initAaron Sierra
2016-05-01vme: trivial spelling and capitalization fixesAaron Sierra
2016-02-07vme: vme_ca91cx42.c: use to_pci_dev()Geliang Tang
2015-11-04Merge tag 'char-misc-4.4-rc1' of git://git.kernel.org/pub/scm/linux/kernel/gi...Linus Torvalds
2015-10-17vme: 8-bit status/id takes 256 values, not 255Dmitry Kalinkin
2015-10-05vme: tsi148: silence uninitialized variable warningDmitry Kalinkin
2015-10-04vme: print unhandled VME access errorsDmitry Kalinkin
2015-10-04vme: change bus error handling schemeDmitry Kalinkin
2015-10-04vme: include address space in error filteringDmitry Kalinkin
2015-10-04vme: move tsi148 error handling into VME subsystemDmitry Kalinkin
2015-10-04vme: lower alignment requirement in pci bridge driversDmitry Kalinkin
2015-06-12vme: tsi148: depend on HAS_DMA for KconfigDmitry Kalinkin
2015-06-12vme: ca91cx42: fix LM_CTL address maskDmitry Kalinkin
2015-06-12vme: ca91cx42: return error code on DMA errorDmitry Kalinkin
2015-06-12vme: export vme_check_window()Dmitry Kalinkin
2015-06-12vme: check for A64 overflow in vme_check_window()Dmitry Kalinkin
2015-06-12vme: stop DMA transfer on interruptionDmitry Kalinkin
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-24 21:24:27 +0000
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/*
 * Toshiba TC6393XB SoC support
 *
 * Copyright(c) 2005-2006 Chris Humbert
 * Copyright(c) 2005 Dirk Opfer
 * Copyright(c) 2005 Ian Molton <spyro@f2s.com>
 * Copyright(c) 2007 Dmitry Baryshkov
 *
 * Based on code written by Sharp/Lineo for 2.4 kernels
 * Based on locomo.c
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/io.h>
#include <linux/irq.h>
#include <linux/platform_device.h>
#include <linux/clk.h>
#include <linux/err.h>
#include <linux/mfd/core.h>
#include <linux/mfd/tmio.h>
#include <linux/mfd/tc6393xb.h>
#include <linux/gpio.h>
#include <linux/slab.h>

#define SCR_REVID	0x08		/* b Revision ID	*/
#define SCR_ISR		0x50		/* b Interrupt Status	*/
#define SCR_IMR		0x52		/* b Interrupt Mask	*/
#define SCR_IRR		0x54		/* b Interrupt Routing	*/
#define SCR_GPER	0x60		/* w GP Enable		*/
#define SCR_GPI_SR(i)	(0x64 + (i))	/* b3 GPI Status	*/
#define SCR_GPI_IMR(i)	(0x68 + (i))	/* b3 GPI INT Mask	*/
#define SCR_GPI_EDER(i)	(0x6c + (i))	/* b3 GPI Edge Detect Enable */
#define SCR_GPI_LIR(i)	(0x70 + (i))	/* b3 GPI Level Invert	*/
#define SCR_GPO_DSR(i)	(0x78 + (i))	/* b3 GPO Data Set	*/
#define SCR_GPO_DOECR(i) (0x7c + (i))	/* b3 GPO Data OE Control */
#define SCR_GP_IARCR(i)	(0x80 + (i))	/* b3 GP Internal Active Register Control */
#define SCR_GP_IARLCR(i) (0x84 + (i))	/* b3 GP INTERNAL Active Register Level Control */
#define SCR_GPI_BCR(i)	(0x88 + (i))	/* b3 GPI Buffer Control */
#define SCR_GPA_IARCR	0x8c		/* w GPa Internal Active Register Control */
#define SCR_GPA_IARLCR	0x90		/* w GPa Internal Active Register Level Control */
#define SCR_GPA_BCR	0x94		/* w GPa Buffer Control */
#define SCR_CCR		0x98		/* w Clock Control	*/
#define SCR_PLL2CR	0x9a		/* w PLL2 Control	*/
#define SCR_PLL1CR	0x9c		/* l PLL1 Control	*/
#define SCR_DIARCR	0xa0		/* b Device Internal Active Register Control */
#define SCR_DBOCR	0xa1		/* b Device Buffer Off Control */
#define SCR_FER		0xe0		/* b Function Enable	*/
#define SCR_MCR		0xe4		/* w Mode Control	*/
#define SCR_CONFIG	0xfc		/* b Configuration Control */
#define SCR_DEBUG	0xff		/* b Debug		*/

#define SCR_CCR_CK32K	BIT(0)
#define SCR_CCR_USBCK	BIT(1)
#define SCR_CCR_UNK1	BIT(4)
#define SCR_CCR_MCLK_MASK	(7 << 8)
#define SCR_CCR_MCLK_OFF	(0 << 8)
#define SCR_CCR_MCLK_12	(1 << 8)
#define SCR_CCR_MCLK_24	(2 << 8)
#define SCR_CCR_MCLK_48	(3 << 8)
#define SCR_CCR_HCLK_MASK	(3 << 12)
#define SCR_CCR_HCLK_24	(0 << 12)
#define SCR_CCR_HCLK_48	(1 << 12)

#define SCR_FER_USBEN		BIT(0)	/* USB host enable */
#define SCR_FER_LCDCVEN		BIT(1)	/* polysilicon TFT enable */
#define SCR_FER_SLCDEN		BIT(2)	/* SLCD enable */

#define SCR_MCR_RDY_MASK		(3 << 0)
#define SCR_MCR_RDY_OPENDRAIN	(0 << 0)
#define SCR_MCR_RDY_TRISTATE	(1 << 0)
#define SCR_MCR_RDY_PUSHPULL	(2 << 0)
#define SCR_MCR_RDY_UNK		BIT(2)
#define SCR_MCR_RDY_EN		BIT(3)
#define SCR_MCR_INT_MASK		(3 << 4)
#define SCR_MCR_INT_OPENDRAIN	(0 << 4)
#define SCR_MCR_INT_TRISTATE	(1 << 4)
#define SCR_MCR_INT_PUSHPULL	(2 << 4)
#define SCR_MCR_INT_UNK		BIT(6)
#define SCR_MCR_INT_EN		BIT(7)
/* bits 8 - 16 are unknown */

#define TC_GPIO_BIT(i)		(1 << (i & 0x7))

/*--------------------------------------------------------------------------*/

struct tc6393xb {
	void __iomem		*scr;

	struct gpio_chip	gpio;

	struct clk		*clk; /* 3,6 Mhz */

	spinlock_t		lock; /* protects RMW cycles */

	struct {
		u8		fer;
		u16		ccr;
		u8		gpi_bcr[3];
		u8		gpo_dsr[3];
		u8		gpo_doecr[3];
	} suspend_state;

	struct resource		rscr;
	struct resource		*iomem;
	int			irq;
	int			irq_base;
};

enum {
	TC6393XB_CELL_NAND,
	TC6393XB_CELL_MMC,
	TC6393XB_CELL_OHCI,
	TC6393XB_CELL_FB,
};

/*--------------------------------------------------------------------------*/

static int tc6393xb_nand_enable(struct platform_device *nand)
{
	struct platform_device *dev = to_platform_device(nand->dev.parent);
	struct tc6393xb *tc6393xb = platform_get_drvdata(dev);
	unsigned long flags;

	spin_lock_irqsave(&tc6393xb->lock, flags);

	/* SMD buffer on */
	dev_dbg(&dev->dev, "SMD buffer on\n");
	tmio_iowrite8(0xff, tc6393xb->scr + SCR_GPI_BCR(1));

	spin_unlock_irqrestore(&tc6393xb->lock, flags);

	return 0;
}

static struct resource __devinitdata tc6393xb_nand_resources[] = {
	{
		.start	= 0x1000,
		.end	= 0x1007,
		.flags	= IORESOURCE_MEM,
	},
	{
		.start	= 0x0100,
		.end	= 0x01ff,
		.flags	= IORESOURCE_MEM,
	},
	{
		.start	= IRQ_TC6393_NAND,
		.end	= IRQ_TC6393_NAND,
		.flags	= IORESOURCE_IRQ,
	},
};

static struct resource __devinitdata tc6393xb_mmc_resources[] = {
	{
		.start	= 0x800,
		.end	= 0x9ff,
		.flags	= IORESOURCE_MEM,
	},
	{
		.start	= IRQ_TC6393_MMC,
		.end	= IRQ_TC6393_MMC,
		.flags	= IORESOURCE_IRQ,
	},
};

static const struct resource tc6393xb_ohci_resources[] = {
	{
		.start	= 0x3000,
		.end	= 0x31ff,
		.flags	= IORESOURCE_MEM,
	},
	{
		.start	= 0x0300,
		.end	= 0x03ff,
		.flags	= IORESOURCE_MEM,
	},
	{
		.start	= 0x010000,
		.end	= 0x017fff,
		.flags	= IORESOURCE_MEM,
	},
	{
		.start	= 0x018000,
		.end	= 0x01ffff,
		.flags	= IORESOURCE_MEM,
	},
	{
		.start	= IRQ_TC6393_OHCI,
		.end	= IRQ_TC6393_OHCI,
		.flags	= IORESOURCE_IRQ,
	},
};

static struct resource __devinitdata tc6393xb_fb_resources[] = {
	{
		.start	= 0x5000,
		.end	= 0x51ff,
		.flags	= IORESOURCE_MEM,
	},
	{
		.start	= 0x0500,
		.end	= 0x05ff,
		.flags	= IORESOURCE_MEM,
	},
	{
		.start	= 0x100000,
		.end	= 0x1fffff,
		.flags	= IORESOURCE_MEM,
	},
	{
		.start	= IRQ_TC6393_FB,
		.end	= IRQ_TC6393_FB,
		.flags	= IORESOURCE_IRQ,
	},
};

static int tc6393xb_ohci_enable(struct platform_device *dev)
{
	struct tc6393xb *tc6393xb = dev_get_drvdata(dev->dev.parent);
	unsigned long flags;
	u16 ccr;
	u8 fer;

	spin_lock_irqsave(&tc6393xb->lock, flags);

	ccr = tmio_ioread16(tc6393xb->scr + SCR_CCR);
	ccr |= SCR_CCR_USBCK;
	tmio_iowrite16(ccr, tc6393xb