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ARM: OMAP2+: Convert SMC91x to use gpmc_cs_program_settings() 

Convert the OMAP2+ SMC91x code to use the gpmc_cs_program_settings()
function for configuring the various GPMC options instead of directly
programming the CONFIG1 register.

Move configuration of the GPMC settings outside retime function and
this does not need to be done if the timings are changed dynamically
at runtime.

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 13:01:37 -06:00
parent 24db7eccfb
commit 1119f3c3ce
1 changed files with 17 additions and 13 deletions
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30
arch/arm/mach-omap2/gpmc-smc91x.c
View File

@ -49,6 +49,10 @@ static struct platform_device gpmc_smc91x_device = {
.resource = gpmc_smc91x_resources,
};
static struct gpmc_settings smc91x_settings = {
.device_width = GPMC_DEVWIDTH_16BIT,
};
/*
* Set the gpmc timings for smc91c96. The timings are taken
* from the data sheet available at:
@ -67,18 +71,6 @@ static int smc91c96_gpmc_retime(void)
const int t7 = 5; /* Figure 12.4 write */
const int t8 = 5; /* Figure 12.4 write */
const int t20 = 185; /* Figure 12.2 read and 12.4 write */
u32 l;
l = GPMC_CONFIG1_DEVICESIZE_16;
if (gpmc_cfg->flags & GPMC_MUX_ADD_DATA)
l |= GPMC_CONFIG1_MUXADDDATA;
if (gpmc_cfg->flags & GPMC_READ_MON)
l |= GPMC_CONFIG1_WAIT_READ_MON;
if (gpmc_cfg->flags & GPMC_WRITE_MON)
l |= GPMC_CONFIG1_WAIT_WRITE_MON;
if (gpmc_cfg->wait_pin)
l |= GPMC_CONFIG1_WAIT_PIN_SEL(gpmc_cfg->wait_pin);
gpmc_cs_write_reg(gpmc_cfg->cs, GPMC_CS_CONFIG1, l);
/*
* FIXME: Calculate the address and data bus muxed timings.
@ -104,7 +96,7 @@ static int smc91c96_gpmc_retime(void)
dev_t.t_cez_w = t4_w * 1000;
dev_t.t_wr_cycle = (t20 - t3) * 1000;
gpmc_calc_timings(&t, NULL, &dev_t);
gpmc_calc_timings(&t, &smc91x_settings, &dev_t);
return gpmc_cs_set_timings(gpmc_cfg->cs, &t);
}
@ -133,6 +125,18 @@ void __init gpmc_smc91x_init(struct omap_smc91x_platform_data *board_data)
gpmc_smc91x_resources[0].end = cs_mem_base + 0x30f;
gpmc_smc91x_resources[1].flags |= (gpmc_cfg->flags & IRQF_TRIGGER_MASK);
if (gpmc_cfg->flags & GPMC_MUX_ADD_DATA)
smc91x_settings.mux_add_data = GPMC_MUX_AD;
if (gpmc_cfg->flags & GPMC_READ_MON)
smc91x_settings.wait_on_read = true;
if (gpmc_cfg->flags & GPMC_WRITE_MON)
smc91x_settings.wait_on_write = true;
if (gpmc_cfg->wait_pin)
smc91x_settings.wait_pin = gpmc_cfg->wait_pin;
ret = gpmc_cs_program_settings(gpmc_cfg->cs, &smc91x_settings);
if (ret < 0)
goto free1;
if (gpmc_cfg->retime) {
ret = gpmc_cfg->retime();
if (ret != 0)