From: Jon Hunter <jon-hun...@ti.com>
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-hun...@ti.com>
Signed-off-by: Afzal Mohammed <af...@ti.com>
---
arch/arm/mach-omap2/gpmc-onenand.c | 39 +++-------------------------
arch/arm/plat-omap/include/plat/onenand.h | 8 ------
2 files changed, 5 insertions(+), 42 deletions(-)
diff --git a/arch/arm/mach-omap2/gpmc-onenand.c
b/arch/arm/mach-omap2/gpmc-onenand.c
index bbae674..8a301f3 100644
--- a/arch/arm/mach-omap2/gpmc-onenand.c
+++ b/arch/arm/mach-omap2/gpmc-onenand.c
@@ -139,21 +139,10 @@ 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:
@@ -181,7 +170,7 @@ 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;
@@ -259,22 +248,6 @@ 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));
@@ -381,16 +354,14 @@ 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))
diff --git a/arch/arm/plat-omap/include/plat/onenand.h
b/arch/arm/plat-omap/include/plat/onenand.h
index 2858667..21bb0ff 100644
--- a/arch/arm/plat-omap/include/plat/onenand.h
+++ b/arch/arm/plat-omap/include/plat/onenand.h
@@ -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;
--
1.7.1
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