In order to change the GPMC settings/timings on the fly,
we must use omap_gpmc_retime(). The other gpmc_*() functions
will soon be made private and moved out of arch/mach-omap2/
CC: Felipe Balbi <ba...@ti.com>
Signed-off-by: Roger Quadros <rog...@ti.com>
---
arch/arm/mach-omap2/usb-tusb6010.c | 94 ++++++++++++++++++--------------------
1 file changed, 44 insertions(+), 50 deletions(-)
diff --git a/arch/arm/mach-omap2/usb-tusb6010.c
b/arch/arm/mach-omap2/usb-tusb6010.c
index e832bc7..71e6246 100644
--- a/arch/arm/mach-omap2/usb-tusb6010.c
+++ b/arch/arm/mach-omap2/usb-tusb6010.c
@@ -48,58 +48,48 @@ static struct gpmc_settings tusb_sync = {
/* NOTE: timings are from tusb 6010 datasheet Rev 1.8, 12-Sept 2006 */
-static int tusb_set_async_mode(unsigned sysclk_ps)
+static void tusb_get_async_timings(unsigned sysclk_ps,
+ struct gpmc_device_timings *dev_t)
{
- struct gpmc_device_timings dev_t;
- struct gpmc_timings t;
- unsigned t_acsnh_advnh = sysclk_ps + 3000;
-
- memset(&dev_t, 0, sizeof(dev_t));
-
- dev_t.t_ceasu = 8 * 1000;
- dev_t.t_avdasu = t_acsnh_advnh - 7000;
- dev_t.t_ce_avd = 1000;
- dev_t.t_avdp_r = t_acsnh_advnh;
- dev_t.t_oeasu = t_acsnh_advnh + 1000;
- dev_t.t_oe = 300;
- dev_t.t_cez_r = 7000;
- dev_t.t_cez_w = dev_t.t_cez_r;
- dev_t.t_avdp_w = t_acsnh_advnh;
- dev_t.t_weasu = t_acsnh_advnh + 1000;
- dev_t.t_wpl = 300;
- dev_t.cyc_aavdh_we = 1;
-
- gpmc_calc_timings(&t, &tusb_async, &dev_t);
-
- return gpmc_cs_set_timings(async_cs, &t);
+ unsigned t_acsnh_advnh = sysclk_ps + 3000;
+
+ memset(dev_t, 0, sizeof(*dev_t));
+
+ dev_t->t_ceasu = 8 * 1000;
+ dev_t->t_avdasu = t_acsnh_advnh - 7000;
+ dev_t->t_ce_avd = 1000;
+ dev_t->t_avdp_r = t_acsnh_advnh;
+ dev_t->t_oeasu = t_acsnh_advnh + 1000;
+ dev_t->t_oe = 300;
+ dev_t->t_cez_r = 7000;
+ dev_t->t_cez_w = dev_t->t_cez_r;
+ dev_t->t_avdp_w = t_acsnh_advnh;
+ dev_t->t_weasu = t_acsnh_advnh + 1000;
+ dev_t->t_wpl = 300;
+ dev_t->cyc_aavdh_we = 1;
}
-static int tusb_set_sync_mode(unsigned sysclk_ps)
+static void tusb_get_sync_timings(unsigned sysclk_ps,
+ struct gpmc_device_timings *dev_t)
{
- struct gpmc_device_timings dev_t;
- struct gpmc_timings t;
- unsigned t_scsnh_advnh = sysclk_ps + 3000;
-
- memset(&dev_t, 0, sizeof(dev_t));
-
- dev_t.clk = 11100;
- dev_t.t_bacc = 1000;
- dev_t.t_ces = 1000;
- dev_t.t_ceasu = 8 * 1000;
- dev_t.t_avdasu = t_scsnh_advnh - 7000;
- dev_t.t_ce_avd = 1000;
- dev_t.t_avdp_r = t_scsnh_advnh;
- dev_t.cyc_aavdh_oe = 3;
- dev_t.cyc_oe = 5;
- dev_t.t_ce_rdyz = 7000;
- dev_t.t_avdp_w = t_scsnh_advnh;
- dev_t.cyc_aavdh_we = 3;
- dev_t.cyc_wpl = 6;
- dev_t.t_ce_rdyz = 7000;
-
- gpmc_calc_timings(&t, &tusb_sync, &dev_t);
-
- return gpmc_cs_set_timings(sync_cs, &t);
+ unsigned t_scsnh_advnh = sysclk_ps + 3000;
+
+ memset(dev_t, 0, sizeof(dev_t));
+
+ dev_t->clk = 11100;
+ dev_t->t_bacc = 1000;
+ dev_t->t_ces = 1000;
+ dev_t->t_ceasu = 8 * 1000;
+ dev_t->t_avdasu = t_scsnh_advnh - 7000;
+ dev_t->t_ce_avd = 1000;
+ dev_t->t_avdp_r = t_scsnh_advnh;
+ dev_t->cyc_aavdh_oe = 3;
+ dev_t->cyc_oe = 5;
+ dev_t->t_ce_rdyz = 7000;
+ dev_t->t_avdp_w = t_scsnh_advnh;
+ dev_t->cyc_aavdh_we = 3;
+ dev_t->cyc_wpl = 6;
+ dev_t->t_ce_rdyz = 7000;
}
/* tusb driver calls this when it changes the chip's clocking */
@@ -110,18 +100,22 @@ int tusb6010_platform_retime(unsigned is_refclk)
unsigned sysclk_ps;
int status;
+ struct gpmc_device_timings dev_t;
if (!refclk_psec)
return -ENODEV;
sysclk_ps = is_refclk ? refclk_psec : TUSB6010_OSCCLK_60;
- status = tusb_set_async_mode(sysclk_ps);
+ tusb_get_async_timings(sysclk_ps, &dev_t);
+ status = omap_gpmc_retime(async_cs, &tusb_async, &dev_t);
if (status < 0) {
printk(error, "async", status);
goto done;
}
- status = tusb_set_sync_mode(sysclk_ps);
+
+ tusb_get_sync_timings(sysclk_ps, &dev_t);
+ status = omap_gpmc_retime(sync_cs, &tusb_sync, &dev_t);
if (status < 0)
printk(error, "sync", status);
done:
--
1.8.3.2
--
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