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memory: omap-gpmc: Add GPMC-NAND ops to get writebufferempty status 

This is needed by OMAP NAND driver to poll the empty status
of the writebuffer.

Signed-off-by: Roger Quadros <rogerq@ti.com>
Acked-by: Tony Lindgren <tony@atomide.com>
hifive-unleashed-5.1
Roger Quadros 2015-08-05 13:34:50 +03:00
parent f47fcad63f
commit 512d73d1c6
1 changed files with 13 additions and 1 deletions
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14
drivers/memory/omap-gpmc.c
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@ -81,6 +81,8 @@
#define GPMC_CONFIG_LIMITEDADDRESS BIT(1)
#define GPMC_STATUS_EMPTYWRITEBUFFERSTATUS BIT(0)
#define GPMC_CONFIG2_CSEXTRADELAY BIT(7)
#define GPMC_CONFIG3_ADVEXTRADELAY BIT(7)
#define GPMC_CONFIG4_OEEXTRADELAY BIT(7)
@ -1118,7 +1120,17 @@ void gpmc_update_nand_reg(struct gpmc_nand_regs *reg, int cs)
}
}
static struct gpmc_nand_ops nand_ops;
static bool gpmc_nand_writebuffer_empty(void)
{
if (gpmc_read_reg(GPMC_STATUS) & GPMC_STATUS_EMPTYWRITEBUFFERSTATUS)
return true;
return false;
}
static struct gpmc_nand_ops nand_ops = {
.nand_writebuffer_empty = gpmc_nand_writebuffer_empty,
};
/**
* gpmc_omap_get_nand_ops - Get the GPMC NAND interface