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Groups > linux.kernel > #1373246
| From | Roger Quadros <rogerq@ti.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH v6 04/17] memory: omap-gpmc: Add GPMC-NAND ops to get writebufferempty status |
| Date | 2016-04-07 12:20 +0200 |
| Message-ID | <rlfcD-2gO-45@gated-at.bofh.it> (permalink) |
| References | <rlfcB-2gO-1@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
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 0b62afd..90dfba5 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)
@@ -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
--
2.5.0
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[PATCH v6 00/17] memory: omap-gpmc: mtd: nand: Support GPMC NAND on non-OMAP platforms Roger Quadros <rogerq@ti.com> - 2016-04-07 12:20 +0200
[PATCH v6 10/17] mtd: nand: omap: Update DT binding documentation Roger Quadros <rogerq@ti.com> - 2016-04-07 12:20 +0200
[PATCH v6 16/17] memory: omap-gpmc: Prevent GPMC_STATUS from being accessed via gpmc_regs Roger Quadros <rogerq@ti.com> - 2016-04-07 12:20 +0200
[PATCH v6 09/17] mtd: nand: omap: Clean up device tree support Roger Quadros <rogerq@ti.com> - 2016-04-07 12:20 +0200
[PATCH v6 14/17] memory: omap-gpmc: Reserve WAITPIN if needed for WAIT monitoring Roger Quadros <rogerq@ti.com> - 2016-04-07 12:20 +0200
[PATCH v6 03/17] memory: omap-gpmc: Introduce GPMC to NAND interface Roger Quadros <rogerq@ti.com> - 2016-04-07 12:20 +0200
[PATCH v6 05/17] memory: omap-gpmc: Implement IRQ domain for NAND IRQs Roger Quadros <rogerq@ti.com> - 2016-04-07 12:20 +0200
Re: [PATCH v6 05/17] memory: omap-gpmc: Implement IRQ domain for NAND IRQs Rob Herring <robh@kernel.org> - 2016-04-11 17:00 +0200
[PATCH v6 06/17] mtd: nand: omap: Use gpmc_omap_get_nand_ops() to get NAND registers Roger Quadros <rogerq@ti.com> - 2016-04-07 12:20 +0200
[PATCH v6 13/17] memory: omap-gpmc: Support general purpose input for WAITPINs Roger Quadros <rogerq@ti.com> - 2016-04-07 12:20 +0200
Re: [PATCH v6 13/17] memory: omap-gpmc: Support general purpose input for WAITPINs Rob Herring <robh@kernel.org> - 2016-04-11 17:10 +0200
[PATCH v6 17/17] mtd: nand: omap2: Implement NAND ready using gpiolib Roger Quadros <rogerq@ti.com> - 2016-04-07 12:20 +0200
Re: [PATCH v6 17/17] mtd: nand: omap2: Implement NAND ready using gpiolib Rob Herring <robh@kernel.org> - 2016-04-11 17:10 +0200
[PATCH v6 07/17] mtd: nand: omap: Switch to using GPMC-NAND ops for writebuffer empty check Roger Quadros <rogerq@ti.com> - 2016-04-07 12:20 +0200
[PATCH v6 11/17] memory: omap-gpmc: Prevent mapping into 1st 16MB Roger Quadros <rogerq@ti.com> - 2016-04-07 12:20 +0200
[PATCH v6 08/17] mtd: nand: omap: Copy platform data parameters to omap_nand_info data Roger Quadros <rogerq@ti.com> - 2016-04-07 12:20 +0200
[PATCH v6 01/17] ARM: OMAP2+: gpmc: Add platform data Roger Quadros <rogerq@ti.com> - 2016-04-07 12:20 +0200
[PATCH v6 04/17] memory: omap-gpmc: Add GPMC-NAND ops to get writebufferempty status Roger Quadros <rogerq@ti.com> - 2016-04-07 12:20 +0200
[PATCH v6 15/17] memory: omap-gpmc: Support WAIT pin edge interrupts Roger Quadros <rogerq@ti.com> - 2016-04-07 12:20 +0200
Re: [PATCH v6 15/17] memory: omap-gpmc: Support WAIT pin edge interrupts Rob Herring <robh@kernel.org> - 2016-04-11 17:10 +0200
[PATCH v6 02/17] ARM: OMAP2+: gpmc: Add gpmc timings and settings to platform data Roger Quadros <rogerq@ti.com> - 2016-04-07 12:20 +0200
[PATCH v6 12/17] memory: omap-gpmc: Move device tree binding to correct location Roger Quadros <rogerq@ti.com> - 2016-04-07 12:20 +0200
Re: [PATCH v6 00/17] memory: omap-gpmc: mtd: nand: Support GPMC NAND on non-OMAP platforms Tony Lindgren <tony@atomide.com> - 2016-04-13 23:30 +0200
Re: [PATCH v6 00/17] memory: omap-gpmc: mtd: nand: Support GPMC NAND on non-OMAP platforms Roger Quadros <rogerq@ti.com> - 2016-04-15 11:40 +0200
Re: [PATCH v6 00/17] memory: omap-gpmc: mtd: nand: Support GPMC NAND on non-OMAP platforms Boris Brezillon <boris.brezillon@free-electrons.com> - 2016-04-15 12:10 +0200
Re: [PATCH v6 00/17] memory: omap-gpmc: mtd: nand: Support GPMC NAND on non-OMAP platforms Roger Quadros <rogerq@ti.com> - 2016-04-15 13:00 +0200
Re: [PATCH v6 00/17] memory: omap-gpmc: mtd: nand: Support GPMC NAND on non-OMAP platforms Boris Brezillon <boris.brezillon@free-electrons.com> - 2016-04-15 13:20 +0200
Re: [PATCH v6 00/17] memory: omap-gpmc: mtd: nand: Support GPMC NAND on non-OMAP platforms Boris Brezillon <boris.brezillon@free-electrons.com> - 2016-04-15 14:00 +0200
Re: [PATCH v6 00/17] memory: omap-gpmc: mtd: nand: Support GPMC NAND on non-OMAP platforms Tony Lindgren <tony@atomide.com> - 2016-04-15 17:50 +0200
Re: [PATCH v6 00/17] memory: omap-gpmc: mtd: nand: Support GPMC NAND on non-OMAP platforms Boris Brezillon <boris.brezillon@free-electrons.com> - 2016-04-15 18:10 +0200
Re: [PATCH v6 00/17] memory: omap-gpmc: mtd: nand: Support GPMC NAND on non-OMAP platforms Tony Lindgren <tony@atomide.com> - 2016-04-15 18:30 +0200
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