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OMAP: OneNAND: determine frequency in one place

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OneNAND frequency is determined when calculating
GPMC timings.  Return that value instead of determining it
again in the OMAP OneNAND driver.

Signed-off-by: Adrian Hunter <adrian.hunter@nokia.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
This commit is contained in:
Adrian Hunter 2011-02-07 10:46:59 +02:00 committed by Tony Lindgren
parent 1435ca0fc1
commit 3ad2d86136
3 changed files with 12 additions and 28 deletions
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10
arch/arm/mach-omap2/gpmc-onenand.c
View File

@ -123,7 +123,7 @@ static void set_onenand_cfg(void __iomem *onenand_base, int latency,
static int omap2_onenand_set_sync_mode(struct omap_onenand_platform_data *cfg,
void __iomem *onenand_base,
int freq)
int *freq_ptr)
{
struct gpmc_timings t;
const int t_cer = 15;
@ -136,7 +136,7 @@ static int omap2_onenand_set_sync_mode(struct omap_onenand_platform_data *cfg,
int tick_ns, div, fclk_offset_ns, fclk_offset, gpmc_clk_ns, latency;
int first_time = 0, hf = 0, vhf = 0, sync_read = 0, sync_write = 0;
int err, ticks_cez;
int cs = cfg->cs;
int cs = cfg->cs, freq = *freq_ptr;
u32 reg;
if (cfg->flags & ONENAND_SYNC_READ) {
@ -330,16 +330,18 @@ static int omap2_onenand_set_sync_mode(struct omap_onenand_platform_data *cfg,
set_onenand_cfg(onenand_base, latency, sync_read, sync_write, hf, vhf);
*freq_ptr = freq;
return 0;
}
static int gpmc_onenand_setup(void __iomem *onenand_base, int freq)
static int gpmc_onenand_setup(void __iomem *onenand_base, int *freq_ptr)
{
struct device *dev = &gpmc_onenand_device.dev;
/* Set sync timings in GPMC */
if (omap2_onenand_set_sync_mode(gpmc_onenand_data, onenand_base,
freq) < 0) {
freq_ptr) < 0) {
dev_err(dev, "Unable to set synchronous mode\n");
return -EINVAL;
}

2
arch/arm/plat-omap/include/plat/onenand.h
View File

@ -20,7 +20,7 @@ struct omap_onenand_platform_data {
int gpio_irq;
struct mtd_partition *parts;
int nr_parts;
int (*onenand_setup)(void __iomem *, int freq);
int (*onenand_setup)(void __iomem *, int *freq_ptr);
int dma_channel;
u8 flags;
u8 regulator_can_sleep;

28
drivers/mtd/onenand/omap2.c
View File

@ -63,7 +63,7 @@ struct omap2_onenand {
struct completion dma_done;
int dma_channel;
int freq;
int (*setup)(void __iomem *base, int freq);
int (*setup)(void __iomem *base, int *freq_ptr);
struct regulator *regulator;
};
@ -581,7 +581,7 @@ static int __adjust_timing(struct device *dev, void *data)
/* DMA is not in use so this is all that is needed */
/* Revisit for OMAP3! */
ret = c->setup(c->onenand.base, c->freq);
ret = c->setup(c->onenand.base, &c->freq);
return ret;
}
@ -673,7 +673,7 @@ static int __devinit omap2_onenand_probe(struct platform_device *pdev)
}
if (pdata->onenand_setup != NULL) {
r = pdata->onenand_setup(c->onenand.base, c->freq);
r = pdata->onenand_setup(c->onenand.base, &c->freq);
if (r < 0) {
dev_err(&pdev->dev, "Onenand platform setup failed: "
"%d\n", r);
@ -718,8 +718,8 @@ static int __devinit omap2_onenand_probe(struct platform_device *pdev)
}
dev_info(&pdev->dev, "initializing on CS%d, phys base 0x%08lx, virtual "
"base %p\n", c->gpmc_cs, c->phys_base,
c->onenand.base);
"base %p, freq %d MHz\n", c->gpmc_cs, c->phys_base,
c->onenand.base, c->freq);
c->pdev = pdev;
c->mtd.name = dev_name(&pdev->dev);
@ -754,24 +754,6 @@ static int __devinit omap2_onenand_probe(struct platform_device *pdev)
if ((r = onenand_scan(&c->mtd, 1)) < 0)
goto err_release_regulator;
switch ((c->onenand.version_id >> 4) & 0xf) {
case 0:
c->freq = 40;
break;
case 1:
c->freq = 54;
break;
case 2:
c->freq = 66;
break;
case 3:
c->freq = 83;
break;
case 4:
c->freq = 104;
break;
}
#ifdef CONFIG_MTD_PARTITIONS
r = parse_mtd_partitions(&c->mtd, part_probes, &c->parts, 0);
if (r > 0)