[MTD] [NAND] TXx9: add NDFMC support
Atsushi Nemoto [Wed, 4 Mar 2009 20:01:31 +0000 (12:01 -0800)]
Add platform support for NAND Flash Memory Controller of TXx9 SoCs.

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Acked-By: Ralf B├Ąchle <ralf@linux-mips.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>

arch/mips/include/asm/txx9/ndfmc.h [new file with mode: 0644]
arch/mips/include/asm/txx9/tx4938.h
arch/mips/include/asm/txx9/tx4939.h
arch/mips/txx9/generic/setup.c
arch/mips/txx9/generic/setup_tx4938.c
arch/mips/txx9/generic/setup_tx4939.c
arch/mips/txx9/rbtx4938/setup.c
arch/mips/txx9/rbtx4939/setup.c

diff --git a/arch/mips/include/asm/txx9/ndfmc.h b/arch/mips/include/asm/txx9/ndfmc.h
new file mode 100644 (file)
index 0000000..fa67f3d
--- /dev/null
@@ -0,0 +1,30 @@
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * (C) Copyright TOSHIBA CORPORATION 2007
+ */
+#ifndef __ASM_TXX9_NDFMC_H
+#define __ASM_TXX9_NDFMC_H
+
+#define NDFMC_PLAT_FLAG_USE_BSPRT      0x01
+#define NDFMC_PLAT_FLAG_NO_RSTR                0x02
+#define NDFMC_PLAT_FLAG_HOLDADD                0x04
+#define NDFMC_PLAT_FLAG_DUMMYWRITE     0x08
+
+struct txx9ndfmc_platform_data {
+       unsigned int shift;
+       unsigned int gbus_clock;
+       unsigned int hold;              /* hold time in nanosecond */
+       unsigned int spw;               /* strobe pulse width in nanosecond */
+       unsigned int flags;
+       unsigned char ch_mask;          /* available channel bitmask */
+       unsigned char wp_mask;          /* write-protect bitmask */
+       unsigned char wide_mask;        /* 16bit-nand bitmask */
+};
+
+void txx9_ndfmc_init(unsigned long baseaddr,
+                    const struct txx9ndfmc_platform_data *plat_data);
+
+#endif /* __ASM_TXX9_NDFMC_H */
index 0b06815..cd8bc20 100644 (file)
@@ -291,6 +291,7 @@ int tx4938_pcic1_map_irq(const struct pci_dev *dev, u8 slot);
 void tx4938_setup_pcierr_irq(void);
 void tx4938_irq_init(void);
 void tx4938_mtd_init(int ch);
+void tx4938_ndfmc_init(unsigned int hold, unsigned int spw);
 
 struct tx4938ide_platform_info {
        /*
index 964ef7e..f02c50b 100644 (file)
@@ -542,5 +542,7 @@ int tx4939_irq(void);
 void tx4939_mtd_init(int ch);
 void tx4939_ata_init(void);
 void tx4939_rtc_init(void);
+void tx4939_ndfmc_init(unsigned int hold, unsigned int spw,
+                      unsigned char ch_mask, unsigned char wide_mask);
 
 #endif /* __ASM_TXX9_TX4939_H */
index a13a08b..8a266c6 100644 (file)
@@ -32,6 +32,7 @@
 #include <asm/txx9/generic.h>
 #include <asm/txx9/pci.h>
 #include <asm/txx9tmr.h>
+#include <asm/txx9/ndfmc.h>
 #ifdef CONFIG_CPU_TX49XX
 #include <asm/txx9/tx4938.h>
 #endif
@@ -691,6 +692,26 @@ void __init txx9_physmap_flash_init(int no, unsigned long addr,
 #endif
 }
 
+void __init txx9_ndfmc_init(unsigned long baseaddr,
+                           const struct txx9ndfmc_platform_data *pdata)
+{
+#if defined(CONFIG_MTD_NAND_TXX9NDFMC) || \
+       defined(CONFIG_MTD_NAND_TXX9NDFMC_MODULE)
+       struct resource res = {
+               .start = baseaddr,
+               .end = baseaddr + 0x1000 - 1,
+               .flags = IORESOURCE_MEM,
+       };
+       struct platform_device *pdev = platform_device_alloc("txx9ndfmc", -1);
+
+       if (!pdev ||
+           platform_device_add_resources(pdev, &res, 1) ||
+           platform_device_add_data(pdev, pdata, sizeof(*pdata)) ||
+           platform_device_add(pdev))
+               platform_device_put(pdev);
+#endif
+}
+
 #if defined(CONFIG_LEDS_GPIO) || defined(CONFIG_LEDS_GPIO_MODULE)
 static DEFINE_SPINLOCK(txx9_iocled_lock);
 
index 25819ff..f0844f8 100644 (file)
@@ -23,6 +23,7 @@
 #include <asm/txx9tmr.h>
 #include <asm/txx9pio.h>
 #include <asm/txx9/generic.h>
+#include <asm/txx9/ndfmc.h>
 #include <asm/txx9/tx4938.h>
 
 static void __init tx4938_wdr_init(void)
@@ -382,6 +383,26 @@ void __init tx4938_ata_init(unsigned int irq, unsigned int shift, int tune)
                platform_device_put(pdev);
 }
 
+void __init tx4938_ndfmc_init(unsigned int hold, unsigned int spw)
+{
+       struct txx9ndfmc_platform_data plat_data = {
+               .shift = 1,
+               .gbus_clock = txx9_gbus_clock,
+               .hold = hold,
+               .spw = spw,
+               .ch_mask = 1,
+       };
+       unsigned long baseaddr = TX4938_NDFMC_REG & 0xfffffffffULL;
+
+#ifdef __BIG_ENDIAN
+       baseaddr += 4;
+#endif
+       if ((__raw_readq(&tx4938_ccfgptr->pcfg) &
+            (TX4938_PCFG_ATA_SEL|TX4938_PCFG_ISA_SEL|TX4938_PCFG_NDF_SEL)) ==
+           TX4938_PCFG_NDF_SEL)
+               txx9_ndfmc_init(baseaddr, &plat_data);
+}
+
 static void __init tx4938_stop_unused_modules(void)
 {
        __u64 pcfg, rst = 0, ckd = 0;
index 5544096..7a25b57 100644 (file)
@@ -27,6 +27,7 @@
 #include <asm/txx9irq.h>
 #include <asm/txx9tmr.h>
 #include <asm/txx9/generic.h>
+#include <asm/txx9/ndfmc.h>
 #include <asm/txx9/tx4939.h>
 
 static void __init tx4939_wdr_init(void)
@@ -457,6 +458,22 @@ void __init tx4939_rtc_init(void)
        platform_device_register(&rtc_dev);
 }
 
+void __init tx4939_ndfmc_init(unsigned int hold, unsigned int spw,
+                             unsigned char ch_mask, unsigned char wide_mask)
+{
+       struct txx9ndfmc_platform_data plat_data = {
+               .shift = 1,
+               .gbus_clock = txx9_gbus_clock,
+               .hold = hold,
+               .spw = spw,
+               .flags = NDFMC_PLAT_FLAG_NO_RSTR | NDFMC_PLAT_FLAG_HOLDADD |
+                        NDFMC_PLAT_FLAG_DUMMYWRITE,
+               .ch_mask = ch_mask,
+               .wide_mask = wide_mask,
+       };
+       txx9_ndfmc_init(TX4939_NDFMC_REG & 0xfffffffffULL, &plat_data);
+}
+
 static void __init tx4939_stop_unused_modules(void)
 {
        __u64 pcfg, rst = 0, ckd = 0;
index 547ff29..65d13df 100644 (file)
@@ -352,6 +352,8 @@ static void __init rbtx4938_device_init(void)
        rbtx4938_ne_init();
        tx4938_wdt_init();
        rbtx4938_mtd_init();
+       /* TC58DVM82A1FT: tDH=10ns, tWP=tRP=tREADID=35ns */
+       tx4938_ndfmc_init(10, 35);
        tx4938_ata_init(RBTX4938_IRQ_IOC_ATA, 0, 1);
        txx9_iocled_init(RBTX4938_LED_ADDR - IO_BASE, -1, 8, 1, "green", NULL);
 }
index 656603b..74839f2 100644 (file)
@@ -333,6 +333,10 @@ static void __init rbtx4939_device_init(void)
            platform_device_add_data(pdev, &smc_pdata, sizeof(smc_pdata)) ||
            platform_device_add(pdev))
                platform_device_put(pdev);
+       /* TC58DVM82A1FT: tDH=10ns, tWP=tRP=tREADID=35ns */
+       tx4939_ndfmc_init(10, 35,
+                         (1 << 1) | (1 << 2),
+                         (1 << 2)); /* ch1:8bit, ch2:16bit */
        rbtx4939_led_setup();
        tx4939_wdt_init();
        tx4939_ata_init();