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ARM: OMAP2+: nand: header cleanup 

For common arm zImage existing nand header file
in platform specific location was moved to generic
platform data location, but it contained more than
platform data, remove it. New local header has been
created for exposing functions.

Also move gpmc-nand platform data to platform header
meant for nand from gpmc header file

Signed-off-by: Afzal Mohammed <afzal@ti.com>
hifive-unleashed-5.1
Afzal Mohammed 2012-09-29 12:26:13 +05:30
parent b6ab13e7d6
commit bc3668ea04
10 changed files with 98 additions and 72 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
arch/arm/mach-omap2/board-cm-t35.c
View File

@ -53,6 +53,7 @@
#include "sdram-micron-mt46h32m32lf-6.h"
#include "hsmmc.h"
#include "common-board-devices.h"
#include "gpmc-nand.h"
#define CM_T35_GPIO_PENDOWN 57
#define SB_T35_USB_HUB_RESET_GPIO 167
@ -181,7 +182,7 @@ static struct omap_nand_platform_data cm_t35_nand_data = {
static void __init cm_t35_init_nand(void)
{
if (gpmc_nand_init(&cm_t35_nand_data) < 0)
if (gpmc_nand_init(&cm_t35_nand_data, NULL) < 0)
pr_err("CM-T35: Unable to register NAND device\n");
}
#else

3
arch/arm/mach-omap2/board-cm-t3517.c
View File

@ -49,6 +49,7 @@
#include "control.h"
#include "common-board-devices.h"
#include "am35xx-emac.h"
#include "gpmc-nand.h"
#if defined(CONFIG_LEDS_GPIO) || defined(CONFIG_LEDS_GPIO_MODULE)
static struct gpio_led cm_t3517_leds[] = {
@ -240,7 +241,7 @@ static struct omap_nand_platform_data cm_t3517_nand_data = {
static void __init cm_t3517_init_nand(void)
{
if (gpmc_nand_init(&cm_t3517_nand_data) < 0)
if (gpmc_nand_init(&cm_t3517_nand_data, NULL) < 0)
pr_err("CM-T3517: NAND initialization failed\n");
}
#else

4
arch/arm/mach-omap2/board-flash.c
View File

@ -26,6 +26,7 @@
#include "common.h"
#include "board-flash.h"
#include "gpmc-onenand.h"
#include "gpmc-nand.h"
#define REG_FPGA_REV 0x10
#define REG_FPGA_DIP_SWITCH_INPUT2 0x60
@ -139,10 +140,9 @@ __init board_nand_init(struct mtd_partition *nand_parts, u8 nr_parts, u8 cs,
board_nand_data.parts = nand_parts;
board_nand_data.nr_parts = nr_parts;
board_nand_data.devsize = nand_type;
board_nand_data.gpmc_t = gpmc_t;
board_nand_data.ecc_opt = OMAP_ECC_HAMMING_CODE_DEFAULT;
gpmc_nand_init(&board_nand_data);
gpmc_nand_init(&board_nand_data, gpmc_t);
}
#endif /* CONFIG_MTD_NAND_OMAP2 || CONFIG_MTD_NAND_OMAP2_MODULE */

3
arch/arm/mach-omap2/board-omap3pandora.c
View File

@ -50,6 +50,7 @@
#include "sdram-micron-mt46h32m32lf-6.h"
#include "hsmmc.h"
#include "common-board-devices.h"
#include "gpmc-nand.h"
#define PANDORA_WIFI_IRQ_GPIO 21
#define PANDORA_WIFI_NRESET_GPIO 23
@ -602,7 +603,7 @@ static void __init omap3pandora_init(void)
omap_ads7846_init(1, OMAP3_PANDORA_TS_GPIO, 0, NULL);
usbhs_init(&usbhs_bdata);
usb_musb_init(NULL);
gpmc_nand_init(&pandora_nand_data);
gpmc_nand_init(&pandora_nand_data, NULL);
/* Ensure SDRC pins are mux'd for self-refresh */
omap_mux_init_signal("sdrc_cke0", OMAP_PIN_OUTPUT);

1
arch/arm/mach-omap2/common-board-devices.c
View File

@ -25,7 +25,6 @@
#include <linux/spi/ads7846.h>
#include <linux/platform_data/spi-omap2-mcspi.h>
#include <linux/platform_data/mtd-nand-omap2.h>
#include "common.h"
#include "common-board-devices.h"

58
arch/arm/mach-omap2/gpmc-nand.c
View File

@ -20,6 +20,10 @@
#include <plat/gpmc.h>
#include "soc.h"
#include "gpmc-nand.h"
/* minimum size for IO mapping */
#define NAND_IO_SIZE 4
static struct resource gpmc_nand_resource[] = {
{
@ -40,41 +44,36 @@ static struct platform_device gpmc_nand_device = {
.resource = gpmc_nand_resource,
};
static int omap2_nand_gpmc_retime(struct omap_nand_platform_data *gpmc_nand_data)
static int omap2_nand_gpmc_retime(
struct omap_nand_platform_data *gpmc_nand_data,
struct gpmc_timings *gpmc_t)
{
struct gpmc_timings t;
int err;
if (!gpmc_nand_data->gpmc_t)
return 0;
memset(&t, 0, sizeof(t));
t.sync_clk = gpmc_nand_data->gpmc_t->sync_clk;
t.cs_on = gpmc_round_ns_to_ticks(gpmc_nand_data->gpmc_t->cs_on);
t.adv_on = gpmc_round_ns_to_ticks(gpmc_nand_data->gpmc_t->adv_on);
t.sync_clk = gpmc_t->sync_clk;
t.cs_on = gpmc_round_ns_to_ticks(gpmc_t->cs_on);
t.adv_on = gpmc_round_ns_to_ticks(gpmc_t->adv_on);
/* Read */
t.adv_rd_off = gpmc_round_ns_to_ticks(
gpmc_nand_data->gpmc_t->adv_rd_off);
t.adv_rd_off = gpmc_round_ns_to_ticks(gpmc_t->adv_rd_off);
t.oe_on = t.adv_on;
t.access = gpmc_round_ns_to_ticks(gpmc_nand_data->gpmc_t->access);
t.oe_off = gpmc_round_ns_to_ticks(gpmc_nand_data->gpmc_t->oe_off);
t.cs_rd_off = gpmc_round_ns_to_ticks(gpmc_nand_data->gpmc_t->cs_rd_off);
t.rd_cycle = gpmc_round_ns_to_ticks(gpmc_nand_data->gpmc_t->rd_cycle);
t.access = gpmc_round_ns_to_ticks(gpmc_t->access);
t.oe_off = gpmc_round_ns_to_ticks(gpmc_t->oe_off);
t.cs_rd_off = gpmc_round_ns_to_ticks(gpmc_t->cs_rd_off);
t.rd_cycle = gpmc_round_ns_to_ticks(gpmc_t->rd_cycle);
/* Write */
t.adv_wr_off = gpmc_round_ns_to_ticks(
gpmc_nand_data->gpmc_t->adv_wr_off);
t.adv_wr_off = gpmc_round_ns_to_ticks(gpmc_t->adv_wr_off);
t.we_on = t.oe_on;
if (cpu_is_omap34xx()) {
t.wr_data_mux_bus = gpmc_round_ns_to_ticks(
gpmc_nand_data->gpmc_t->wr_data_mux_bus);
t.wr_access = gpmc_round_ns_to_ticks(
gpmc_nand_data->gpmc_t->wr_access);
t.wr_data_mux_bus = gpmc_round_ns_to_ticks(gpmc_t->wr_data_mux_bus);
t.wr_access = gpmc_round_ns_to_ticks(gpmc_t->wr_access);
}
t.we_off = gpmc_round_ns_to_ticks(gpmc_nand_data->gpmc_t->we_off);
t.cs_wr_off = gpmc_round_ns_to_ticks(gpmc_nand_data->gpmc_t->cs_wr_off);
t.wr_cycle = gpmc_round_ns_to_ticks(gpmc_nand_data->gpmc_t->wr_cycle);
t.we_off = gpmc_round_ns_to_ticks(gpmc_t->we_off);
t.cs_wr_off = gpmc_round_ns_to_ticks(gpmc_t->cs_wr_off);
t.wr_cycle = gpmc_round_ns_to_ticks(gpmc_t->wr_cycle);
/* Configure GPMC */
if (gpmc_nand_data->devsize == NAND_BUSWIDTH_16)
@ -91,7 +90,8 @@ static int omap2_nand_gpmc_retime(struct omap_nand_platform_data *gpmc_nand_data
return 0;
}
int __init gpmc_nand_init(struct omap_nand_platform_data *gpmc_nand_data)
int __init gpmc_nand_init(struct omap_nand_platform_data *gpmc_nand_data,
struct gpmc_timings *gpmc_t)
{
int err = 0;
struct device *dev = &gpmc_nand_device.dev;
@ -112,11 +112,13 @@ int __init gpmc_nand_init(struct omap_nand_platform_data *gpmc_nand_data)
gpmc_get_client_irq(GPMC_IRQ_FIFOEVENTENABLE);
gpmc_nand_resource[2].start =
gpmc_get_client_irq(GPMC_IRQ_COUNT_EVENT);
/* Set timings in GPMC */
err = omap2_nand_gpmc_retime(gpmc_nand_data);
if (err < 0) {
dev_err(dev, "Unable to set gpmc timings: %d\n", err);
return err;
if (gpmc_t) {
err = omap2_nand_gpmc_retime(gpmc_nand_data, gpmc_t);
if (err < 0) {
dev_err(dev, "Unable to set gpmc timings: %d\n", err);
return err;
}
}
/* Enable RD PIN Monitoring Reg */

27
arch/arm/mach-omap2/gpmc-nand.h 100644
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@ -0,0 +1,27 @@
/*
* arch/arm/mach-omap2/gpmc-nand.h
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the License, or (at your
* option) any later version.
*/
#ifndef __OMAP2_GPMC_NAND_H
#define __OMAP2_GPMC_NAND_H
#include <plat/gpmc.h>
#include <linux/platform_data/mtd-nand-omap2.h>
#if IS_ENABLED(CONFIG_MTD_NAND_OMAP2)
extern int gpmc_nand_init(struct omap_nand_platform_data *d,
struct gpmc_timings *gpmc_t);
#else
static inline int gpmc_nand_init(struct omap_nand_platform_data *d,
struct gpmc_timings *gpmc_t)
{
return 0;
}
#endif
#endif

2
arch/arm/mach-omap2/gpmc.c
View File

@ -26,6 +26,8 @@
#include <linux/interrupt.h>
#include <linux/platform_device.h>
#include <linux/platform_data/mtd-nand-omap2.h>
#include <asm/mach-types.h>
#include <plat/gpmc.h>

28
arch/arm/plat-omap/include/plat/gpmc.h
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@ -11,6 +11,8 @@
#ifndef __OMAP2_GPMC_H
#define __OMAP2_GPMC_H
#include <linux/platform_data/mtd-nand-omap2.h>
/* Maximum Number of Chip Selects */
#define GPMC_CS_NUM 8
@ -86,16 +88,6 @@
#define PREFETCH_FIFOTHRESHOLD_MAX 0x40
#define PREFETCH_FIFOTHRESHOLD(val) ((val) << 8)
enum omap_ecc {
/* 1-bit ecc: stored at end of spare area */
OMAP_ECC_HAMMING_CODE_DEFAULT = 0, /* Default, s/w method */
OMAP_ECC_HAMMING_CODE_HW, /* gpmc to detect the error */
/* 1-bit ecc: stored at beginning of spare area as romcode */
OMAP_ECC_HAMMING_CODE_HW_ROMCODE, /* gpmc method & romcode layout */
OMAP_ECC_BCH4_CODE_HW, /* 4-bit BCH ecc code */
OMAP_ECC_BCH8_CODE_HW, /* 8-bit BCH ecc code */
};
/*
* Note that all values in this struct are in nanoseconds except sync_clk
* (which is in picoseconds), while the register values are in gpmc_fck cycles.
@ -133,22 +125,6 @@ struct gpmc_timings {
u16 wr_data_mux_bus; /* WRDATAONADMUXBUS */
};
struct gpmc_nand_regs {
void __iomem *gpmc_status;
void __iomem *gpmc_nand_command;
void __iomem *gpmc_nand_address;
void __iomem *gpmc_nand_data;
void __iomem *gpmc_prefetch_config1;
void __iomem *gpmc_prefetch_config2;
void __iomem *gpmc_prefetch_control;
void __iomem *gpmc_prefetch_status;
void __iomem *gpmc_ecc_config;
void __iomem *gpmc_ecc_control;
void __iomem *gpmc_ecc_size_config;
void __iomem *gpmc_ecc1_result;
void __iomem *gpmc_bch_result0;
};
extern void gpmc_update_nand_reg(struct gpmc_nand_regs *reg, int cs);
extern int gpmc_get_client_irq(unsigned irq_config);

41
include/linux/platform_data/mtd-nand-omap2.h
View File

@ -8,7 +8,9 @@
* published by the Free Software Foundation.
*/
#include <plat/gpmc.h>
#ifndef _MTD_NAND_OMAP2_H
#define _MTD_NAND_OMAP2_H
#include <linux/mtd/partitions.h>
enum nand_io {
@ -18,10 +20,35 @@ enum nand_io {
NAND_OMAP_PREFETCH_IRQ /* prefetch enabled irq mode */
};
enum omap_ecc {
/* 1-bit ecc: stored at end of spare area */
OMAP_ECC_HAMMING_CODE_DEFAULT = 0, /* Default, s/w method */
OMAP_ECC_HAMMING_CODE_HW, /* gpmc to detect the error */
/* 1-bit ecc: stored at beginning of spare area as romcode */
OMAP_ECC_HAMMING_CODE_HW_ROMCODE, /* gpmc method & romcode layout */
OMAP_ECC_BCH4_CODE_HW, /* 4-bit BCH ecc code */
OMAP_ECC_BCH8_CODE_HW, /* 8-bit BCH ecc code */
};
struct gpmc_nand_regs {
void __iomem *gpmc_status;
void __iomem *gpmc_nand_command;
void __iomem *gpmc_nand_address;
void __iomem *gpmc_nand_data;
void __iomem *gpmc_prefetch_config1;
void __iomem *gpmc_prefetch_config2;
void __iomem *gpmc_prefetch_control;
void __iomem *gpmc_prefetch_status;
void __iomem *gpmc_ecc_config;
void __iomem *gpmc_ecc_control;
void __iomem *gpmc_ecc_size_config;
void __iomem *gpmc_ecc1_result;
void __iomem *gpmc_bch_result0;
};
struct omap_nand_platform_data {
int cs;
struct mtd_partition *parts;
struct gpmc_timings *gpmc_t;
int nr_parts;
bool dev_ready;
enum nand_io xfer_type;
@ -30,14 +57,4 @@ struct omap_nand_platform_data {
struct gpmc_nand_regs reg;
};
/* minimum size for IO mapping */
#define NAND_IO_SIZE 4
#if defined(CONFIG_MTD_NAND_OMAP2) || defined(CONFIG_MTD_NAND_OMAP2_MODULE)
extern int gpmc_nand_init(struct omap_nand_platform_data *d);
#else
static inline int gpmc_nand_init(struct omap_nand_platform_data *d)
{
return 0;
}
#endif