mtd: remove the tqm8xxl map driver (a312c87a) · Commits · e / devices / android_kernel_oneplus_sm8150

drivers/mtd/maps/Kconfig

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Original line number	Diff line number	Diff line
		@@ -274,16 +274,6 @@ config MTD_L440GX

		BE VERY CAREFUL.

		config MTD_TQM8XXL
		tristate "CFI Flash device mapped on TQM8XXL"
		depends on MTD_CFI && TQM8xxL
		help
		The TQM8xxL PowerPC board has up to two banks of CFI-compliant
		chips, currently uses AMD one. This 'mapping' driver supports
		that arrangement, allowing the CFI probe and command set driver
		code to communicate with the chips on the TQM8xxL board. More at
		<http://www.denx.de/wiki/PPCEmbedded/>.

		config MTD_CFI_FLAGADM
		tristate "CFI Flash device mapping on FlagaDM"
		depends on 8xx && MTD_CFI

drivers/mtd/maps/Makefile

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Original line number	Diff line number	Diff line
		@@ -23,7 +23,6 @@ obj-$(CONFIG_MTD_PHYSMAP_OF) += physmap_of.o
		obj-$(CONFIG_MTD_PISMO) += pismo.o
		obj-$(CONFIG_MTD_PMC_MSP_EVM) += pmcmsp-flash.o
		obj-$(CONFIG_MTD_PCMCIA) += pcmciamtd.o
		obj-$(CONFIG_MTD_TQM8XXL) += tqm8xxl.o
		obj-$(CONFIG_MTD_SA1100) += sa1100-flash.o
		obj-$(CONFIG_MTD_SBC_GXX) += sbc_gxx.o
		obj-$(CONFIG_MTD_SC520CDP) += sc520cdp.o

drivers/mtd/maps/tqm8xxl.c

deleted100644 → 0

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Original line number	Diff line number	Diff line
		/*
		* Handle mapping of the flash memory access routines
		* on TQM8xxL based devices.
		*
		* based on rpxlite.c
		*
		* Copyright(C) 2001 Kirk Lee <kirk@hpc.ee.ntu.edu.tw>
		*
		* This code is GPLed
		*
		*/

		/*
		* According to TQM8xxL hardware manual, TQM8xxL series have
		* following flash memory organisations:
		* \| capacity \| \| chip type \| \| bank0 \| \| bank1 \|
		* 2MiB 512Kx16 2MiB 0
		* 4MiB 1Mx16 4MiB 0
		* 8MiB 1Mx16 4MiB 4MiB
		* Thus, we choose CONFIG_MTD_CFI_I2 & CONFIG_MTD_CFI_B4 at
		* kernel configuration.
		*/
		#include <linux/module.h>
		#include <linux/types.h>
		#include <linux/kernel.h>
		#include <linux/init.h>
		#include <linux/slab.h>

		#include <linux/mtd/mtd.h>
		#include <linux/mtd/map.h>
		#include <linux/mtd/partitions.h>

		#include <asm/io.h>

		#define FLASH_ADDR 0x40000000
		#define FLASH_SIZE 0x00800000
		#define FLASH_BANK_MAX 4

		// trivial struct to describe partition information
		struct mtd_part_def
		{
		int nums;
		unsigned char *type;
		struct mtd_partition* mtd_part;
		};

		//static struct mtd_info *mymtd;
		static struct mtd_info* mtd_banks[FLASH_BANK_MAX];
		static struct map_info* map_banks[FLASH_BANK_MAX];
		static struct mtd_part_def part_banks[FLASH_BANK_MAX];
		static unsigned long num_banks;
		static void __iomem *start_scan_addr;

		/*
		* Here are partition information for all known TQM8xxL series devices.
		* See include/linux/mtd/partitions.h for definition of the mtd_partition
		* structure.
		*
		* The *_max_flash_size is the maximum possible mapped flash size which
		* is not necessarily the actual flash size. It must correspond to the
		* value specified in the mapping definition defined by the
		* "struct map_desc *_io_desc" for the corresponding machine.
		*/

		/* Currently, TQM8xxL has up to 8MiB flash */
		static unsigned long tqm8xxl_max_flash_size = 0x00800000;

		/* partition definition for first flash bank
		* (cf. "drivers/char/flash_config.c")
		*/
		static struct mtd_partition tqm8xxl_partitions[] = {
		{
		.name = "ppcboot",
		.offset = 0x00000000,
		.size = 0x00020000, /* 128KB */
		.mask_flags = MTD_WRITEABLE, /* force read-only */
		},
		{
		.name = "kernel", /* default kernel image */
		.offset = 0x00020000,
		.size = 0x000e0000,
		.mask_flags = MTD_WRITEABLE, /* force read-only */
		},
		{
		.name = "user",
		.offset = 0x00100000,
		.size = 0x00100000,
		},
		{
		.name = "initrd",
		.offset = 0x00200000,
		.size = 0x00200000,
		}
		};
		/* partition definition for second flash bank */
		static struct mtd_partition tqm8xxl_fs_partitions[] = {
		{
		.name = "cramfs",
		.offset = 0x00000000,
		.size = 0x00200000,
		},
		{
		.name = "jffs",
		.offset = 0x00200000,
		.size = 0x00200000,
		//.size = MTDPART_SIZ_FULL,
		}
		};

		static int __init init_tqm_mtd(void)
		{
		int idx = 0, ret = 0;
		unsigned long flash_addr, flash_size, mtd_size = 0;
		/* pointer to TQM8xxL board info data */
		bd_t bd = (bd_t )__res;

		flash_addr = bd->bi_flashstart;
		flash_size = bd->bi_flashsize;

		//request maximum flash size address space
		start_scan_addr = ioremap(flash_addr, flash_size);
		if (!start_scan_addr) {
		printk(KERN_WARNING "%s:Failed to ioremap address:0x%x\n", __func__, flash_addr);
		return -EIO;
		}

		for (idx = 0 ; idx < FLASH_BANK_MAX ; idx++) {
		if(mtd_size >= flash_size)
		break;

		printk(KERN_INFO "%s: chip probing count %d\n", __func__, idx);

		map_banks[idx] = kzalloc(sizeof(struct map_info), GFP_KERNEL);
		if(map_banks[idx] == NULL) {
		ret = -ENOMEM;
		/* FIXME: What if some MTD devices were probed already? */
		goto error_mem;
		}

		map_banks[idx]->name = kmalloc(16, GFP_KERNEL);

		if (!map_banks[idx]->name) {
		ret = -ENOMEM;
		/* FIXME: What if some MTD devices were probed already? */
		goto error_mem;
		}
		sprintf(map_banks[idx]->name, "TQM8xxL%d", idx);

		map_banks[idx]->size = flash_size;
		map_banks[idx]->bankwidth = 4;

		simple_map_init(map_banks[idx]);

		map_banks[idx]->virt = start_scan_addr;
		map_banks[idx]->phys = flash_addr;
		/* FIXME: This looks utterly bogus, but I'm trying to
		preserve the behaviour of the original (shown here)...

		map_banks[idx]->map_priv_1 =
		start_scan_addr + ((idx > 0) ?
		(mtd_banks[idx-1] ? mtd_banks[idx-1]->size : 0) : 0);
		*/

		if (idx && mtd_banks[idx-1]) {
		map_banks[idx]->virt += mtd_banks[idx-1]->size;
		map_banks[idx]->phys += mtd_banks[idx-1]->size;
		}

		//start to probe flash chips
		mtd_banks[idx] = do_map_probe("cfi_probe", map_banks[idx]);

		if (mtd_banks[idx]) {
		mtd_banks[idx]->owner = THIS_MODULE;
		mtd_size += mtd_banks[idx]->size;
		num_banks++;

		printk(KERN_INFO "%s: bank%d, name:%s, size:%dbytes \n", __func__, num_banks,
		mtd_banks[idx]->name, mtd_banks[idx]->size);
		}
		}

		/* no supported flash chips found */
		if (!num_banks) {
		printk(KERN_NOTICE "TQM8xxL: No support flash chips found!\n");
		ret = -ENXIO;
		goto error_mem;
		}

		/*
		* Select Static partition definitions
		*/
		part_banks[0].mtd_part = tqm8xxl_partitions;
		part_banks[0].type = "Static image";
		part_banks[0].nums = ARRAY_SIZE(tqm8xxl_partitions);

		part_banks[1].mtd_part = tqm8xxl_fs_partitions;
		part_banks[1].type = "Static file system";
		part_banks[1].nums = ARRAY_SIZE(tqm8xxl_fs_partitions);

		for(idx = 0; idx < num_banks ; idx++) {
		if (part_banks[idx].nums == 0)
		printk(KERN_NOTICE "TQM flash%d: no partition info available, registering whole flash at once\n", idx);
		else
		printk(KERN_NOTICE "TQM flash%d: Using %s partition definition\n",
		idx, part_banks[idx].type);
		mtd_device_register(mtd_banks[idx], part_banks[idx].mtd_part,
		part_banks[idx].nums);
		}
		return 0;
		error_mem:
		for(idx = 0 ; idx < FLASH_BANK_MAX ; idx++) {
		if(map_banks[idx] != NULL) {
		kfree(map_banks[idx]->name);
		map_banks[idx]->name = NULL;
		kfree(map_banks[idx]);
		map_banks[idx] = NULL;
		}
		}
		error:
		iounmap(start_scan_addr);
		return ret;
		}

		static void __exit cleanup_tqm_mtd(void)
		{
		unsigned int idx = 0;
		for(idx = 0 ; idx < num_banks ; idx++) {
		/* destroy mtd_info previously allocated */
		if (mtd_banks[idx]) {
		mtd_device_unregister(mtd_banks[idx]);
		map_destroy(mtd_banks[idx]);
		}
		/* release map_info not used anymore */
		kfree(map_banks[idx]->name);
		kfree(map_banks[idx]);
		}

		if (start_scan_addr) {
		iounmap(start_scan_addr);
		start_scan_addr = 0;
		}
		}

		module_init(init_tqm_mtd);
		module_exit(cleanup_tqm_mtd);

		MODULE_LICENSE("GPL");
		MODULE_AUTHOR("Kirk Lee <kirk@hpc.ee.ntu.edu.tw>");
		MODULE_DESCRIPTION("MTD map driver for TQM8xxL boards");