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-rw-r--r--arch/arm/mach-mmp/aspenite.c5
-rw-r--r--arch/arm/mach-pxa/cm-x300.c5
-rw-r--r--arch/arm/mach-pxa/colibri-pxa3xx.c5
-rw-r--r--arch/arm/mach-pxa/littleton.c5
-rw-r--r--arch/arm/mach-pxa/mxm8x10.c9
-rw-r--r--arch/arm/mach-pxa/raumfeld.c5
-rw-r--r--arch/arm/mach-pxa/zylonite.c5
-rw-r--r--arch/arm/plat-pxa/include/plat/pxa3xx_nand.h20
-rw-r--r--drivers/mtd/nand/pxa3xx_nand.c173
9 files changed, 164 insertions, 68 deletions
diff --git a/arch/arm/mach-mmp/aspenite.c b/arch/arm/mach-mmp/aspenite.c
index 06b5fa853c93..c4996f3dba3b 100644
--- a/arch/arm/mach-mmp/aspenite.c
+++ b/arch/arm/mach-mmp/aspenite.c
@@ -167,8 +167,9 @@ static struct mtd_partition aspenite_nand_partitions[] = {
static struct pxa3xx_nand_platform_data aspenite_nand_info = {
.enable_arbiter = 1,
- .parts = aspenite_nand_partitions,
- .nr_parts = ARRAY_SIZE(aspenite_nand_partitions),
+ .num_cs = 1,
+ .parts[0] = aspenite_nand_partitions,
+ .nr_parts[0] = ARRAY_SIZE(aspenite_nand_partitions),
};
static struct i2c_board_info aspenite_i2c_info[] __initdata = {
diff --git a/arch/arm/mach-pxa/cm-x300.c b/arch/arm/mach-pxa/cm-x300.c
index b6a51340270b..eac3846ce42c 100644
--- a/arch/arm/mach-pxa/cm-x300.c
+++ b/arch/arm/mach-pxa/cm-x300.c
@@ -424,8 +424,9 @@ static struct mtd_partition cm_x300_nand_partitions[] = {
static struct pxa3xx_nand_platform_data cm_x300_nand_info = {
.enable_arbiter = 1,
.keep_config = 1,
- .parts = cm_x300_nand_partitions,
- .nr_parts = ARRAY_SIZE(cm_x300_nand_partitions),
+ .num_cs = 1,
+ .parts[0] = cm_x300_nand_partitions,
+ .nr_parts[0] = ARRAY_SIZE(cm_x300_nand_partitions),
};
static void __init cm_x300_init_nand(void)
diff --git a/arch/arm/mach-pxa/colibri-pxa3xx.c b/arch/arm/mach-pxa/colibri-pxa3xx.c
index 3f9be419959d..2b8ca0de8a3d 100644
--- a/arch/arm/mach-pxa/colibri-pxa3xx.c
+++ b/arch/arm/mach-pxa/colibri-pxa3xx.c
@@ -139,8 +139,9 @@ static struct mtd_partition colibri_nand_partitions[] = {
static struct pxa3xx_nand_platform_data colibri_nand_info = {
.enable_arbiter = 1,
.keep_config = 1,
- .parts = colibri_nand_partitions,
- .nr_parts = ARRAY_SIZE(colibri_nand_partitions),
+ .num_cs = 1,
+ .parts[0] = colibri_nand_partitions,
+ .nr_parts[0] = ARRAY_SIZE(colibri_nand_partitions),
};
void __init colibri_pxa3xx_init_nand(void)
diff --git a/arch/arm/mach-pxa/littleton.c b/arch/arm/mach-pxa/littleton.c
index 8f97e15e86e5..cd9fda3c9e65 100644
--- a/arch/arm/mach-pxa/littleton.c
+++ b/arch/arm/mach-pxa/littleton.c
@@ -325,8 +325,9 @@ static struct mtd_partition littleton_nand_partitions[] = {
static struct pxa3xx_nand_platform_data littleton_nand_info = {
.enable_arbiter = 1,
- .parts = littleton_nand_partitions,
- .nr_parts = ARRAY_SIZE(littleton_nand_partitions),
+ .num_cs = 1,
+ .parts[0] = littleton_nand_partitions,
+ .nr_parts[0] = ARRAY_SIZE(littleton_nand_partitions),
};
static void __init littleton_init_nand(void)
diff --git a/arch/arm/mach-pxa/mxm8x10.c b/arch/arm/mach-pxa/mxm8x10.c
index b5a8fd3fce04..90928d6e1a5b 100644
--- a/arch/arm/mach-pxa/mxm8x10.c
+++ b/arch/arm/mach-pxa/mxm8x10.c
@@ -389,10 +389,11 @@ static struct mtd_partition mxm_8x10_nand_partitions[] = {
};
static struct pxa3xx_nand_platform_data mxm_8x10_nand_info = {
- .enable_arbiter = 1,
- .keep_config = 1,
- .parts = mxm_8x10_nand_partitions,
- .nr_parts = ARRAY_SIZE(mxm_8x10_nand_partitions)
+ .enable_arbiter = 1,
+ .keep_config = 1,
+ .num_cs = 1,
+ .parts[0] = mxm_8x10_nand_partitions,
+ .nr_parts[0] = ARRAY_SIZE(mxm_8x10_nand_partitions)
};
static void __init mxm_8x10_nand_init(void)
diff --git a/arch/arm/mach-pxa/raumfeld.c b/arch/arm/mach-pxa/raumfeld.c
index bbcd90562ebe..6a2f353de39a 100644
--- a/arch/arm/mach-pxa/raumfeld.c
+++ b/arch/arm/mach-pxa/raumfeld.c
@@ -346,8 +346,9 @@ static struct mtd_partition raumfeld_nand_partitions[] = {
static struct pxa3xx_nand_platform_data raumfeld_nand_info = {
.enable_arbiter = 1,
.keep_config = 1,
- .parts = raumfeld_nand_partitions,
- .nr_parts = ARRAY_SIZE(raumfeld_nand_partitions),
+ .num_cs = 1,
+ .parts[0] = raumfeld_nand_partitions,
+ .nr_parts[0] = ARRAY_SIZE(raumfeld_nand_partitions),
};
/**
diff --git a/arch/arm/mach-pxa/zylonite.c b/arch/arm/mach-pxa/zylonite.c
index 15ec66b3471a..90fbf879c019 100644
--- a/arch/arm/mach-pxa/zylonite.c
+++ b/arch/arm/mach-pxa/zylonite.c
@@ -366,8 +366,9 @@ static struct mtd_partition zylonite_nand_partitions[] = {
static struct pxa3xx_nand_platform_data zylonite_nand_info = {
.enable_arbiter = 1,
- .parts = zylonite_nand_partitions,
- .nr_parts = ARRAY_SIZE(zylonite_nand_partitions),
+ .num_cs = 1,
+ .parts[0] = zylonite_nand_partitions,
+ .nr_parts[0] = ARRAY_SIZE(zylonite_nand_partitions),
};
static void __init zylonite_init_nand(void)
diff --git a/arch/arm/plat-pxa/include/plat/pxa3xx_nand.h b/arch/arm/plat-pxa/include/plat/pxa3xx_nand.h
index 442301fe48b4..c42f39f20195 100644
--- a/arch/arm/plat-pxa/include/plat/pxa3xx_nand.h
+++ b/arch/arm/plat-pxa/include/plat/pxa3xx_nand.h
@@ -41,6 +41,19 @@ struct pxa3xx_nand_flash {
struct pxa3xx_nand_timing *timing; /* NAND Flash timing */
};
+/*
+ * Current pxa3xx_nand controller has two chip select which
+ * both be workable.
+ *
+ * Notice should be taken that:
+ * When you want to use this feature, you should not enable the
+ * keep configuration feature, for two chip select could be
+ * attached with different nand chip. The different page size
+ * and timing requirement make the keep configuration impossible.
+ */
+
+/* The max num of chip select current support */
+#define NUM_CHIP_SELECT (2)
struct pxa3xx_nand_platform_data {
/* the data flash bus is shared between the Static Memory
@@ -52,8 +65,11 @@ struct pxa3xx_nand_platform_data {
/* allow platform code to keep OBM/bootloader defined NFC config */
int keep_config;
- const struct mtd_partition *parts;
- unsigned int nr_parts;
+ /* indicate how many chip selects will be used */
+ int num_cs;
+
+ const struct mtd_partition *parts[NUM_CHIP_SELECT];
+ unsigned int nr_parts[NUM_CHIP_SELECT];
const struct pxa3xx_nand_flash * flash;
size_t num_flash;
diff --git a/drivers/mtd/nand/pxa3xx_nand.c b/drivers/mtd/nand/pxa3xx_nand.c
index 97b689499119..9eb7f879969e 100644
--- a/drivers/mtd/nand/pxa3xx_nand.c
+++ b/drivers/mtd/nand/pxa3xx_nand.c
@@ -130,6 +130,7 @@ struct pxa3xx_nand_host {
/* page size of attached chip */
unsigned int page_size;
int use_ecc;
+ int cs;
/* calculated from pxa3xx_nand_flash data */
unsigned int col_addr_cycles;
@@ -165,9 +166,10 @@ struct pxa3xx_nand_info {
struct pxa_dma_desc *data_desc;
dma_addr_t data_desc_addr;
- struct pxa3xx_nand_host *host;
+ struct pxa3xx_nand_host *host[NUM_CHIP_SELECT];
unsigned int state;
+ int cs;
int use_ecc; /* use HW ECC ? */
int use_dma; /* use DMA ? */
int is_ready;
@@ -226,7 +228,7 @@ static struct pxa3xx_nand_flash builtin_flash_types[] = {
/* Define a default flash type setting serve as flash detecting only */
#define DEFAULT_FLASH_TYPE (&builtin_flash_types[0])
-const char *mtd_names[] = {"pxa3xx_nand-0", NULL};
+const char *mtd_names[] = {"pxa3xx_nand-0", "pxa3xx_nand-1", NULL};
#define NDTR0_tCH(c) (min((c), 7) << 19)
#define NDTR0_tCS(c) (min((c), 7) << 16)
@@ -268,7 +270,7 @@ static void pxa3xx_nand_set_timing(struct pxa3xx_nand_host *host,
static void pxa3xx_set_datasize(struct pxa3xx_nand_info *info)
{
- struct pxa3xx_nand_host *host = info->host;
+ struct pxa3xx_nand_host *host = info->host[info->cs];
int oob_enable = host->reg_ndcr & NDCR_SPARE_EN;
info->data_size = host->page_size;
@@ -295,7 +297,7 @@ static void pxa3xx_set_datasize(struct pxa3xx_nand_info *info)
*/
static void pxa3xx_nand_start(struct pxa3xx_nand_info *info)
{
- struct pxa3xx_nand_host *host = info->host;
+ struct pxa3xx_nand_host *host = info->host[info->cs];
uint32_t ndcr;
ndcr = host->reg_ndcr;
@@ -420,6 +422,15 @@ static irqreturn_t pxa3xx_nand_irq(int irq, void *devid)
{
struct pxa3xx_nand_info *info = devid;
unsigned int status, is_completed = 0;
+ unsigned int ready, cmd_done;
+
+ if (info->cs == 0) {
+ ready = NDSR_FLASH_RDY;
+ cmd_done = NDSR_CS0_CMDD;
+ } else {
+ ready = NDSR_RDY;
+ cmd_done = NDSR_CS1_CMDD;
+ }
status = nand_readl(info, NDSR);
@@ -441,11 +452,11 @@ static irqreturn_t pxa3xx_nand_irq(int irq, void *devid)
handle_data_pio(info);
}
}
- if (status & NDSR_CS0_CMDD) {
+ if (status & cmd_done) {
info->state = STATE_CMD_DONE;
is_completed = 1;
}
- if (status & NDSR_FLASH_RDY) {
+ if (status & ready) {
info->is_ready = 1;
info->state = STATE_READY;
}
@@ -480,9 +491,11 @@ static int prepare_command_pool(struct pxa3xx_nand_info *info, int command,
{
uint16_t cmd;
int addr_cycle, exec_cmd;
- struct pxa3xx_nand_host *host = info->host;
- struct mtd_info *mtd = host->mtd;
+ struct pxa3xx_nand_host *host;
+ struct mtd_info *mtd;
+ host = info->host[info->cs];
+ mtd = host->mtd;
addr_cycle = 0;
exec_cmd = 1;
@@ -492,8 +505,11 @@ static int prepare_command_pool(struct pxa3xx_nand_info *info, int command,
info->oob_size = 0;
info->use_ecc = 0;
info->is_ready = 0;
- info->ndcb0 = 0;
info->retcode = ERR_NONE;
+ if (info->cs != 0)
+ info->ndcb0 = NDCB0_CSEL;
+ else
+ info->ndcb0 = 0;
switch (command) {
case NAND_CMD_READ0:
@@ -637,6 +653,17 @@ static void pxa3xx_nand_cmdfunc(struct mtd_info *mtd, unsigned command,
if (host->reg_ndcr & NDCR_DWIDTH_M)
column /= 2;
+ /*
+ * There may be different NAND chip hooked to
+ * different chip select, so check whether
+ * chip select has been changed, if yes, reset the timing
+ */
+ if (info->cs != host->cs) {
+ info->cs = host->cs;
+ nand_writel(info, NDTR0CS0, host->ndtr0cs0);
+ nand_writel(info, NDTR1CS0, host->ndtr1cs0);
+ }
+
info->state = STATE_PREPARED;
exec_cmd = prepare_command_pool(info, command, column, page_addr);
if (exec_cmd) {
@@ -778,7 +805,7 @@ static int pxa3xx_nand_config_flash(struct pxa3xx_nand_info *info,
{
struct platform_device *pdev = info->pdev;
struct pxa3xx_nand_platform_data *pdata = pdev->dev.platform_data;
- struct pxa3xx_nand_host *host = info->host;
+ struct pxa3xx_nand_host *host = info->host[info->cs];
uint32_t ndcr = 0x0; /* enable all interrupts */
if (f->page_size != 2048 && f->page_size != 512) {
@@ -822,7 +849,11 @@ static int pxa3xx_nand_config_flash(struct pxa3xx_nand_info *info,
static int pxa3xx_nand_detect_config(struct pxa3xx_nand_info *info)
{
- struct pxa3xx_nand_host *host = info->host;
+ /*
+ * We set 0 by hard coding here, for we don't support keep_config
+ * when there is more than one chip attached to the controller
+ */
+ struct pxa3xx_nand_host *host = info->host[0];
uint32_t ndcr = nand_readl(info, NDCR);
if (ndcr & NDCR_PAGE_SZ) {
@@ -884,9 +915,9 @@ static int pxa3xx_nand_init_buff(struct pxa3xx_nand_info *info)
static int pxa3xx_nand_sensing(struct pxa3xx_nand_info *info)
{
- struct mtd_info *mtd = info->host->mtd;
+ struct mtd_info *mtd;
int ret;
-
+ mtd = info->host[info->cs]->mtd;
/* use the common timing to make a try */
ret = pxa3xx_nand_config_flash(info, &builtin_flash_types[0]);
if (ret)
@@ -917,7 +948,8 @@ static int pxa3xx_nand_scan(struct mtd_info *mtd)
ret = pxa3xx_nand_sensing(info);
if (ret) {
- dev_info(&info->pdev->dev, "There is no nand chip on cs 0!\n");
+ dev_info(&info->pdev->dev, "There is no chip on cs %d!\n",
+ info->cs);
return ret;
}
@@ -996,41 +1028,47 @@ KEEP_CONFIG:
static int alloc_nand_resource(struct platform_device *pdev)
{
+ struct pxa3xx_nand_platform_data *pdata;
struct pxa3xx_nand_info *info;
struct pxa3xx_nand_host *host;
struct nand_chip *chip;
struct mtd_info *mtd;
struct resource *r;
- int ret, irq;
+ int ret, irq, cs;
- info = kzalloc(sizeof(*info) + sizeof(*mtd) + sizeof(*host),
- GFP_KERNEL);
+ pdata = pdev->dev.platform_data;
+ info = kzalloc(sizeof(*info) + (sizeof(*mtd) +
+ sizeof(*host)) * pdata->num_cs, GFP_KERNEL);
if (!info) {
dev_err(&pdev->dev, "failed to allocate memory\n");
return -ENOMEM;
}
- mtd = (struct mtd_info *)(&info[1]);
- chip = (struct nand_chip *)(&mtd[1]);
- host = (struct pxa3xx_nand_host *)chip;
info->pdev = pdev;
- info->host = host;
- host->mtd = mtd;
- host->info_data = info;
- mtd->priv = host;
- mtd->owner = THIS_MODULE;
-
- chip->ecc.read_page = pxa3xx_nand_read_page_hwecc;
- chip->ecc.write_page = pxa3xx_nand_write_page_hwecc;
- chip->controller = &info->controller;
- chip->waitfunc = pxa3xx_nand_waitfunc;
- chip->select_chip = pxa3xx_nand_select_chip;
- chip->cmdfunc = pxa3xx_nand_cmdfunc;
- chip->read_word = pxa3xx_nand_read_word;
- chip->read_byte = pxa3xx_nand_read_byte;
- chip->read_buf = pxa3xx_nand_read_buf;
- chip->write_buf = pxa3xx_nand_write_buf;
- chip->verify_buf = pxa3xx_nand_verify_buf;
+ for (cs = 0; cs < pdata->num_cs; cs++) {
+ mtd = (struct mtd_info *)((unsigned int)&info[1] +
+ (sizeof(*mtd) + sizeof(*host)) * cs);
+ chip = (struct nand_chip *)(&mtd[1]);
+ host = (struct pxa3xx_nand_host *)chip;
+ info->host[cs] = host;
+ host->mtd = mtd;
+ host->cs = cs;
+ host->info_data = info;
+ mtd->priv = host;
+ mtd->owner = THIS_MODULE;
+
+ chip->ecc.read_page = pxa3xx_nand_read_page_hwecc;
+ chip->ecc.write_page = pxa3xx_nand_write_page_hwecc;
+ chip->controller = &info->controller;
+ chip->waitfunc = pxa3xx_nand_waitfunc;
+ chip->select_chip = pxa3xx_nand_select_chip;
+ chip->cmdfunc = pxa3xx_nand_cmdfunc;
+ chip->read_word = pxa3xx_nand_read_word;
+ chip->read_byte = pxa3xx_nand_read_byte;
+ chip->read_buf = pxa3xx_nand_read_buf;
+ chip->write_buf = pxa3xx_nand_write_buf;
+ chip->verify_buf = pxa3xx_nand_verify_buf;
+ }
spin_lock_init(&chip->controller->lock);
init_waitqueue_head(&chip->controller->wq);
@@ -1128,12 +1166,14 @@ fail_free_mtd:
static int pxa3xx_nand_remove(struct platform_device *pdev)
{
struct pxa3xx_nand_info *info = platform_get_drvdata(pdev);
+ struct pxa3xx_nand_platform_data *pdata;
struct resource *r;
- int irq;
+ int irq, cs;
if (!info)
return 0;
+ pdata = pdev->dev.platform_data;
platform_set_drvdata(pdev, NULL);
irq = platform_get_irq(pdev, 0);
@@ -1153,7 +1193,8 @@ static int pxa3xx_nand_remove(struct platform_device *pdev)
clk_disable(info->clk);
clk_put(info->clk);
- nand_release(info->host->mtd);
+ for (cs = 0; cs < pdata->num_cs; cs++)
+ nand_release(info->host[cs]->mtd);
kfree(info);
return 0;
}
@@ -1162,7 +1203,7 @@ static int pxa3xx_nand_probe(struct platform_device *pdev)
{
struct pxa3xx_nand_platform_data *pdata;
struct pxa3xx_nand_info *info;
- int ret;
+ int ret, cs, probe_success;
pdata = pdev->dev.platform_data;
if (!pdata) {
@@ -1177,41 +1218,69 @@ static int pxa3xx_nand_probe(struct platform_device *pdev)
}
info = platform_get_drvdata(pdev);
- if (pxa3xx_nand_scan(info->host->mtd)) {
- dev_err(&pdev->dev, "failed to scan nand\n");
+ probe_success = 0;
+ for (cs = 0; cs < pdata->num_cs; cs++) {
+ info->cs = cs;
+ ret = pxa3xx_nand_scan(info->host[cs]->mtd);
+ if (ret) {
+ dev_warn(&pdev->dev, "failed to scan nand at cs %d\n",
+ cs);
+ continue;
+ }
+
+ ret = mtd_device_parse_register(info->host[cs]->mtd, NULL, 0,
+ pdata->parts[cs], pdata->nr_parts[cs]);
+ if (!ret)
+ probe_success = 1;
+ }
+
+ if (!probe_success) {
pxa3xx_nand_remove(pdev);
return -ENODEV;
}
- return mtd_device_parse_register(info->host->mtd, NULL, 0,
- pdata->parts, pdata->nr_parts);
+ return 0;
}
#ifdef CONFIG_PM
static int pxa3xx_nand_suspend(struct platform_device *pdev, pm_message_t state)
{
struct pxa3xx_nand_info *info = platform_get_drvdata(pdev);
- struct mtd_info *mtd = info->mtd;
+ struct pxa3xx_nand_platform_data *pdata;
+ struct mtd_info *mtd;
+ int cs;
+ pdata = pdev->dev.platform_data;
if (info->state) {
dev_err(&pdev->dev, "driver busy, state = %d\n", info->state);
return -EAGAIN;
}
- mtd->suspend(mtd);
+ for (cs = 0; cs < pdata->num_cs; cs++) {
+ mtd = info->host[cs]->mtd;
+ mtd->suspend(mtd);
+ }
+
return 0;
}
static int pxa3xx_nand_resume(struct platform_device *pdev)
{
struct pxa3xx_nand_info *info = platform_get_drvdata(pdev);
- struct mtd_info *mtd = info->mtd;
+ struct pxa3xx_nand_platform_data *pdata;
+ struct mtd_info *mtd;
+ int cs;
+ pdata = pdev->dev.platform_data;
/* We don't want to handle interrupt without calling mtd routine */
disable_int(info, NDCR_INT_MASK);
- nand_writel(info, NDTR0CS0, info->host->ndtr0cs0);
- nand_writel(info, NDTR1CS0, info->host->ndtr1cs0);
+ /*
+ * Directly set the chip select to a invalid value,
+ * then the driver would reset the timing according
+ * to current chip select at the beginning of cmdfunc
+ */
+ info->cs = 0xff;
/*
* As the spec says, the NDSR would be updated to 0x1800 when
@@ -1220,7 +1289,11 @@ static int pxa3xx_nand_resume(struct platform_device *pdev)
* all status before resume
*/
nand_writel(info, NDSR, NDSR_MASK);
- mtd->resume(mtd);
+ for (cs = 0; cs < pdata->num_cs; cs++) {
+ mtd = info->host[cs]->mtd;
+ mtd->resume(mtd);
+ }
+
return 0;
}
#else
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.