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Message-ID: <1402477001-31132-27-git-send-email-rogerq@ti.com>
Date: Wed, 11 Jun 2014 11:56:31 +0300
From: Roger Quadros <rogerq@...com>
To: <tony@...mide.com>, <dwmw2@...radead.org>,
<computersforpeace@...il.com>
CC: <kyungmin.park@...sung.com>, <pekon@...com>,
<ezequiel.garcia@...e-electrons.com>, <javier@...hile0.org>,
<nsekhar@...com>, <linux-omap@...r.kernel.org>,
<linux-mtd@...ts.infradead.org>, <devicetree@...r.kernel.org>,
<linux-kernel@...r.kernel.org>, Roger Quadros <rogerq@...com>
Subject: [PATCH 26/36] ARM: OMAP2+: gpmc-smc91x: Get rid of retime() from omap_smc91x_platform_data
The retime() function is not provided by board files so get rid of
it from omap_smc91x_platform_data().
Instead change it to smc91c96_get_device_timing() to get the device
timings.
Signed-off-by: Roger Quadros <rogerq@...com>
---
arch/arm/mach-omap2/board-3430sdp.c | 8 ++++--
arch/arm/mach-omap2/gpmc-smc91x.c | 55 ++++++++++++++-----------------------
arch/arm/mach-omap2/gpmc-smc91x.h | 1 -
3 files changed, 27 insertions(+), 37 deletions(-)
diff --git a/arch/arm/mach-omap2/board-3430sdp.c b/arch/arm/mach-omap2/board-3430sdp.c
index d95d0ef..b781090 100644
--- a/arch/arm/mach-omap2/board-3430sdp.c
+++ b/arch/arm/mach-omap2/board-3430sdp.c
@@ -411,8 +411,12 @@ static int __init omap3430_i2c_init(void)
static struct omap_smc91x_platform_data board_smc91x_data = {
.cs = 3,
- .flags = GPMC_MUX_ADD_DATA | GPMC_TIMINGS_SMC91C96 |
- IORESOURCE_IRQ_LOWLEVEL,
+ /*
+ * Don't use GPMC_TIMINGS_SMC91C96 flag here as generic
+ * timing doesn't seem to have worked.
+ * Leave bootloader timing intact.
+ */
+ .flags = GPMC_MUX_ADD_DATA | IORESOURCE_IRQ_LOWLEVEL,
};
static void __init board_smc91x_init(void)
diff --git a/arch/arm/mach-omap2/gpmc-smc91x.c b/arch/arm/mach-omap2/gpmc-smc91x.c
index 61a0635..7f5d84a 100644
--- a/arch/arm/mach-omap2/gpmc-smc91x.c
+++ b/arch/arm/mach-omap2/gpmc-smc91x.c
@@ -59,10 +59,8 @@ static struct gpmc_settings smc91x_settings = {
* http://www.smsc.com/main/catalog/lan91c96.html
* REVISIT: Level shifters can add at least to the access latency.
*/
-static int smc91c96_gpmc_retime(void)
+static void smc91c96_get_device_timing(struct gpmc_device_timings *dev_t)
{
- struct gpmc_timings t;
- struct gpmc_device_timings dev_t;
const int t3 = 10; /* Figure 12.2 read and 12.4 write */
const int t4_r = 20; /* Figure 12.2 read */
const int t4_w = 5; /* Figure 12.4 write */
@@ -72,33 +70,19 @@ static int smc91c96_gpmc_retime(void)
const int t8 = 5; /* Figure 12.4 write */
const int t20 = 185; /* Figure 12.2 read and 12.4 write */
- /*
- * FIXME: Calculate the address and data bus muxed timings.
- * Note that at least adv_rd_off needs to be changed according
- * to omap3430 TRM Figure 11-11. Are the sdp boards using the
- * FPGA in between smc91x and omap as the timings are different
- * from above?
- */
- if (gpmc_cfg->flags & GPMC_MUX_ADD_DATA)
- return 0;
-
- memset(&dev_t, 0, sizeof(dev_t));
-
- dev_t.t_oeasu = t3 * 1000;
- dev_t.t_oe = t5 * 1000;
- dev_t.t_cez_r = t4_r * 1000;
- dev_t.t_oez = t6 * 1000;
- dev_t.t_rd_cycle = (t20 - t3) * 1000;
+ memset(dev_t, 0, sizeof(*dev_t));
- dev_t.t_weasu = t3 * 1000;
- dev_t.t_wpl = t7 * 1000;
- dev_t.t_wph = t8 * 1000;
- dev_t.t_cez_w = t4_w * 1000;
- dev_t.t_wr_cycle = (t20 - t3) * 1000;
+ dev_t->t_oeasu = t3 * 1000;
+ dev_t->t_oe = t5 * 1000;
+ dev_t->t_cez_r = t4_r * 1000;
+ dev_t->t_oez = t6 * 1000;
+ dev_t->t_rd_cycle = (t20 - t3) * 1000;
- gpmc_calc_timings(&t, &smc91x_settings, &dev_t);
-
- return gpmc_cs_set_timings(gpmc_cfg->cs, &t);
+ dev_t->t_weasu = t3 * 1000;
+ dev_t->t_wpl = t7 * 1000;
+ dev_t->t_wph = t8 * 1000;
+ dev_t->t_cez_w = t4_w * 1000;
+ dev_t->t_wr_cycle = (t20 - t3) * 1000;
}
/*
@@ -110,12 +94,10 @@ void __init gpmc_smc91x_init(struct omap_smc91x_platform_data *board_data)
{
unsigned long cs_mem_base;
int ret;
+ struct gpmc_device_timings dev_t;
gpmc_cfg = board_data;
- if (gpmc_cfg->flags & GPMC_TIMINGS_SMC91C96)
- gpmc_cfg->retime = smc91c96_gpmc_retime;
-
if (gpmc_cs_request(gpmc_cfg->cs, SZ_16M, &cs_mem_base) < 0) {
printk(KERN_ERR "Failed to request GPMC mem for smc91x\n");
return;
@@ -137,10 +119,15 @@ void __init gpmc_smc91x_init(struct omap_smc91x_platform_data *board_data)
if (ret < 0)
goto free1;
- if (gpmc_cfg->retime) {
- ret = gpmc_cfg->retime();
- if (ret != 0)
+ if (gpmc_cfg->flags & GPMC_TIMINGS_SMC91C96) {
+ struct gpmc_timings gpmc_t;
+
+ smc91c96_get_device_timing(&dev_t);
+ gpmc_calc_timings(&gpmc_t, &smc91x_settings, &dev_t);
+ if (gpmc_cs_set_timings(gpmc_cfg->cs, &gpmc_t)) {
+ pr_err("%s: failed to set GPMC timings\n", __func__);
goto free1;
+ }
}
if (gpio_request_one(gpmc_cfg->gpio_irq, GPIOF_IN, "SMC91X irq") < 0)
diff --git a/arch/arm/mach-omap2/gpmc-smc91x.h b/arch/arm/mach-omap2/gpmc-smc91x.h
index b64fbee..1da09a0 100644
--- a/arch/arm/mach-omap2/gpmc-smc91x.h
+++ b/arch/arm/mach-omap2/gpmc-smc91x.h
@@ -22,7 +22,6 @@ struct omap_smc91x_platform_data {
int gpio_reset;
int wait_pin; /* Optional GPMC_CONFIG1_WAITPINSELECT */
u32 flags;
- int (*retime)(void);
};
#if defined(CONFIG_SMC91X) || \
--
1.8.3.2
--
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