Thread (12 messages) 12 messages, 5 authors, 2011-08-27
STALE5399d REVIEWED: 1 (1M)

[PATCH v10 2/3] MTD : add helper functions library and header files for GPMI NAND driver

From: marek.vasut@gmail.com (Marek Vasut)
Date: 2011-08-26 15:15:17

On Wednesday, August 24, 2011 09:33:23 AM Huang Shijie wrote:
bch-regs.h : registers file for BCH module
gpmi-regs.h: registers file for GPMI module
gpmi-lib.c: helper functions library.

Signed-off-by: Huang Shijie <redacted>
[...]
+/* Returns the Ready/Busy status of the given chip. */
+int gpmi_is_ready(struct gpmi_nand_data *this, unsigned chip)
+{
+	struct resources *r = &this->resources;
+	uint32_t mask;
+	uint32_t reg;
+
+	if (GPMI_IS_MX23(this)) {
+		mask = MX23_BM_GPMI_DEBUG_READY0 << chip;
+		reg = readl(r->gpmi_regs + HW_GPMI_DEBUG);
+	} else if (GPMI_IS_MX28(this)) {
+		mask = MX28_BF_GPMI_STAT_READY_BUSY(1 << chip);
+		reg = readl(r->gpmi_regs + HW_GPMI_STAT);
+	} else
+		BUG();
+	return !!(reg & mask);
Maybe you don't need that double negation here ?
+}
[...]
+#define HW_GPMI_TIMING1					0x00000080
+#define HW_GPMI_TIMING2					0x00000090
+#define HW_GPMI_DATA					0x000000a0
+/*============================ MX28 uses this to detect READY
==============*/ +#define HW_GPMI_STAT					0x000000b0
+#define MX28_BP_GPMI_STAT_READY_BUSY			24
+#define MX28_BM_GPMI_STAT_READY_BUSY	(0xff <<
MX28_BP_GPMI_STAT_READY_BUSY) +#define MX28_BF_GPMI_STAT_READY_BUSY(v)		
\
+	(((v) << MX28_BP_GPMI_STAT_READY_BUSY) & MX28_BM_GPMI_STAT_READY_BUSY)
+/*============================ MX23 uses this to detect READY
==============*/ +#define HW_GPMI_DEBUG					0x000000c0
+#define MX23_BP_GPMI_DEBUG_READY0			28
+#define MX23_BM_GPMI_DEBUG_READY0	(1 << MX23_BP_GPMI_DEBUG_READY0)
+#endif
Maybe remove those "==========" above.

Minor things,

Acked-by: Marek Vasut <marek.vasut@gmail.com>
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