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ARM: OMAP2+: Add structure for storing GPMC settings

Selaa lähdekoodia 
The GPMC has various different configuration options such as bus-width,
synchronous or asychronous mode selection, burst mode options etc.
Currently, there is no central structure for storing all these options
when configuring the GPMC for a given device. Some of the options are
stored in the GPMC timing structure and some are directly programmed
into the GPMC configuration register. Add a new structure to store
these options and convert code to use this structure. Adding this
structure will allow us to create a common function for configuring
these options.

Signed-off-by: Jon Hunter <jon-hunter@ti.com>
Tested-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
This commit is contained in:
Jon Hunter
2013-02-21 13:46:22 -06:00
vanhempi 9f8331562a
commit c3be5b457a
5 muutettua tiedostoa jossa 72 lisäystä ja 40 poistoa
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18
arch/arm/mach-omap2/gpmc-onenand.c
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@@ -47,6 +47,15 @@ static struct platform_device gpmc_onenand_device = {
.resource = &gpmc_onenand_resource,
};
static struct gpmc_settings onenand_async = {
.mux_add_data = GPMC_MUX_AD,
};
static struct gpmc_settings onenand_sync = {
.burst_read = true,
.mux_add_data = GPMC_MUX_AD,
};
static void omap2_onenand_calc_async_timings(struct gpmc_timings *t)
{
struct gpmc_device_timings dev_t;
@@ -63,7 +72,6 @@ static void omap2_onenand_calc_async_timings(struct gpmc_timings *t)
memset(&dev_t, 0, sizeof(dev_t));
dev_t.mux = true;
dev_t.t_avdp_r = max_t(int, t_avdp, t_cer) * 1000;
dev_t.t_avdp_w = dev_t.t_avdp_r;
dev_t.t_aavdh = t_aavdh * 1000;
@@ -75,7 +83,7 @@ static void omap2_onenand_calc_async_timings(struct gpmc_timings *t)
dev_t.t_wpl = t_wpl * 1000;
dev_t.t_wph = t_wph * 1000;
gpmc_calc_timings(t, &dev_t);
gpmc_calc_timings(t, &onenand_async, &dev_t);
}
static int gpmc_set_async_mode(int cs, struct gpmc_timings *t)
@@ -235,10 +243,8 @@ static void omap2_onenand_calc_sync_timings(struct gpmc_timings *t,
/* Set synchronous read timings */
memset(&dev_t, 0, sizeof(dev_t));
dev_t.mux = true;
dev_t.sync_read = true;
if (onenand_flags & ONENAND_FLAG_SYNCWRITE) {
dev_t.sync_write = true;
onenand_sync.sync_write = true;
} else {
dev_t.t_avdp_w = max(t_avdp, t_cer) * 1000;
dev_t.t_wpl = t_wpl * 1000;
@@ -261,7 +267,7 @@ static void omap2_onenand_calc_sync_timings(struct gpmc_timings *t,
dev_t.cyc_aavdh_oe = 1;
dev_t.t_rdyo = t_rdyo * 1000 + min_gpmc_clk_period;
gpmc_calc_timings(t, &dev_t);
gpmc_calc_timings(t, &onenand_sync, &dev_t);
}
static int gpmc_set_sync_mode(int cs, struct gpmc_timings *t)