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[PATCH v5 05/26] memory: omap-gpmc: Add GPMC-NAND ops to get writebufferempty status

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

Signed-off-by: Roger Quadros <rogerq@ti.com>
---
 drivers/memory/omap-gpmc.c | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/drivers/memory/omap-gpmc.c b/drivers/memory/omap-gpmc.c
index c2f7320..695be32 100644
--- a/drivers/memory/omap-gpmc.c
+++ b/drivers/memory/omap-gpmc.c
@@ -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)
@@ -1098,7 +1100,17 @@ 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
-- 
2.1.4

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[PATCH v5 00/26] memory: omap-gpmc: mtd: nand: Support GPMC NAND on non-OMAP platforms Roger Quadros <rogerq@ti.com> - 2016-02-19 22:20 +0100
  [PATCH v5 21/26] ARM: dts: am437x: Provide NAND ready pin Roger Quadros <rogerq@ti.com> - 2016-02-19 22:20 +0100
  [PATCH v5 10/26] mtd: nand: omap: Update DT binding documentation Roger Quadros <rogerq@ti.com> - 2016-02-19 22:20 +0100
  [PATCH v5 14/26] memory: omap-gpmc: Reserve WAITPIN if needed for WAIT monitoring Roger Quadros <rogerq@ti.com> - 2016-02-19 22:30 +0100
  [PATCH v5 22/26] ARM: dts: am335x: Fix NAND device nodes Roger Quadros <rogerq@ti.com> - 2016-02-19 22:30 +0100
  [PATCH v5 01/26] ARM: OMAP2+: gpmc: Add platform data Roger Quadros <rogerq@ti.com> - 2016-02-19 22:30 +0100
  [PATCH v5 08/26] mtd: nand: omap: Copy platform data parameters to omap_nand_info data Roger Quadros <rogerq@ti.com> - 2016-02-19 22:30 +0100
  [PATCH v5 05/26] memory: omap-gpmc: Add GPMC-NAND ops to get writebufferempty status Roger Quadros <rogerq@ti.com> - 2016-02-19 22:30 +0100
  [PATCH v5 17/26] mtd: nand: omap2: Implement NAND ready using gpiolib Roger Quadros <rogerq@ti.com> - 2016-02-19 22:30 +0100
  [PATCH v5 09/26] mtd: nand: omap: Clean up device tree support Roger Quadros <rogerq@ti.com> - 2016-02-19 22:30 +0100
  [PATCH v5 03/26] memory: omap-gpmc: Introduce GPMC to NAND interface Roger Quadros <rogerq@ti.com> - 2016-02-19 22:30 +0100
  [PATCH v5 07/26] memory: omap-gpmc: Implement IRQ domain for NAND IRQs Roger Quadros <rogerq@ti.com> - 2016-02-19 22:30 +0100
  [PATCH v5 15/26] memory: omap-gpmc: Support WAIT pin edge interrupts Roger Quadros <rogerq@ti.com> - 2016-02-19 22:30 +0100
  [PATCH v5 02/26] ARM: OMAP2+: gpmc: Add gpmc timings and settings to platform data Roger Quadros <rogerq@ti.com> - 2016-02-19 22:30 +0100
  [PATCH v5 04/26] mtd: nand: omap2: Use gpmc_omap_get_nand_ops() to get NAND registers Roger Quadros <rogerq@ti.com> - 2016-02-19 22:30 +0100
  Re: [PATCH v5 00/26] memory: omap-gpmc: mtd: nand: Support GPMC NAND  on non-OMAP platforms Tony Lindgren <tony@atomide.com> - 2016-02-19 23:10 +0100
    Re: [PATCH v5 00/26] memory: omap-gpmc: mtd: nand: Support GPMC NAND  on non-OMAP platforms Roger Quadros <rogerq@ti.com> - 2016-02-22 11:20 +0100
      Re: [PATCH v5 00/26] memory: omap-gpmc: mtd: nand: Support GPMC NAND  on non-OMAP platforms Tony Lindgren <tony@atomide.com> - 2016-02-22 17:50 +0100
        Re: [PATCH v5 00/26] memory: omap-gpmc: mtd: nand: Support GPMC NAND  on non-OMAP platforms Roger Quadros <rogerq@ti.com> - 2016-02-22 21:10 +0100

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