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

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>

diff --git a/arch/arm/mach-omap2/gpmc-onenand.c b/arch/arm/mach-omap2/gpmc-onenand.c
index 29d391b..50165aa 100644 (file)
--- a/arch/arm/mach-omap2/gpmc-onenand.c
+++ b/arch/arm/mach-omap2/gpmc-onenand.c
@@ -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))

diff --git a/include/linux/platform_data/mtd-onenand-omap2.h b/include/linux/platform_data/mtd-onenand-omap2.h
index 2858667..21bb0ff 100644 (file)
--- a/include/linux/platform_data/mtd-onenand-omap2.h
+++ b/include/linux/platform_data/mtd-onenand-omap2.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;