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ARM: OMAP2+: GPMC: Remove unused OneNAND get_freq() platform function

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A platform function pointer for getting the frequency of a OneNAND device
was added so that a platform could specify a custom function for returning
the frequency and not just rely on the OneNAND version to determine the
frequency. However, this platform function pointer is not currently being
used and I am not sure if it ever has.

OneNAND devices are not so common these days and as far as I know not being
used with new devices. Therefore, it is most likely that this get_freq()
function pointer will not be used and so remove it.

Given that the get_freq() function pointer is not used, neither is the
clk_dep variable and so all references to it can also be removed.

Signed-off-by: Jon Hunter <jon-hunter@ti.com>
Signed-off-by: Afzal Mohammed <afzal@ti.com>
This commit is contained in:
Jon Hunter 2012-06-28 13:41:29 -05:00 committed by Afzal Mohammed
parent 46376884ce
commit 757ef79188
2 changed files with 5 additions and 42 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

39
arch/arm/mach-omap2/gpmc-onenand.c
View File

@ -140,21 +140,10 @@ static void set_onenand_cfg(void __iomem *onenand_base)
}
static int omap2_onenand_get_freq(struct omap_onenand_platform_data *cfg,
void __iomem *onenand_base, bool *clk_dep)
void __iomem *onenand_base)
{
u16 ver = readw(onenand_base + ONENAND_REG_VERSION_ID);
int freq = 0;
if (cfg->get_freq) {
struct onenand_freq_info fi;
fi.maf_id = readw(onenand_base + ONENAND_REG_MANUFACTURER_ID);
fi.dev_id = readw(onenand_base + ONENAND_REG_DEVICE_ID);
fi.ver_id = ver;
freq = cfg->get_freq(&fi, clk_dep);
if (freq)
return freq;
}
int freq;
switch ((ver >> 4) & 0xf) {
case 0:
@ -182,7 +171,7 @@ static int omap2_onenand_get_freq(struct omap_onenand_platform_data *cfg,
static struct gpmc_timings
omap2_onenand_calc_sync_timings(struct omap_onenand_platform_data *cfg,
int freq, bool clk_dep)
int freq)
{
struct gpmc_timings t;
const int t_cer = 15;
@ -261,22 +250,6 @@ omap2_onenand_calc_sync_timings(struct omap_onenand_platform_data *cfg,
else
latency = 4;
if (clk_dep) {
if (gpmc_clk_ns < 12) { /* >83Mhz */
t_ces = 3;
t_avds = 4;
} else if (gpmc_clk_ns < 15) { /* >66Mhz */
t_ces = 5;
t_avds = 4;
} else if (gpmc_clk_ns < 25) { /* >40Mhz */
t_ces = 6;
t_avds = 5;
} else {
t_ces = 7;
t_avds = 7;
}
}
/* Set synchronous read timings */
memset(&t, 0, sizeof(t));
@ -399,16 +372,14 @@ static int omap2_onenand_setup_sync(void __iomem *onenand_base, int *freq_ptr)
{
int ret, freq = *freq_ptr;
struct gpmc_timings t;
bool clk_dep = false;
if (!freq) {
/* Very first call freq is not known */
freq = omap2_onenand_get_freq(gpmc_onenand_data,
onenand_base, &clk_dep);
freq = omap2_onenand_get_freq(gpmc_onenand_data, onenand_base);
set_onenand_cfg(onenand_base);
}
t = omap2_onenand_calc_sync_timings(gpmc_onenand_data, freq, clk_dep);
t = omap2_onenand_calc_sync_timings(gpmc_onenand_data, freq);
ret = gpmc_set_sync_mode(gpmc_onenand_data->cs, &t);
if (IS_ERR_VALUE(ret))

8
include/linux/platform_data/mtd-onenand-omap2.h
View File

@ -15,20 +15,12 @@
#define ONENAND_SYNC_READ (1 << 0)
#define ONENAND_SYNC_READWRITE (1 << 1)
struct onenand_freq_info {
u16 maf_id;
u16 dev_id;
u16 ver_id;
};
struct omap_onenand_platform_data {
int cs;
int gpio_irq;
struct mtd_partition *parts;
int nr_parts;
int (*onenand_setup)(void __iomem *, int *freq_ptr);
int (*get_freq)(const struct onenand_freq_info *freq_info,
bool *clk_dep);
int dma_channel;
u8 flags;
u8 regulator_can_sleep;