ARM: mx5: dynamically register mxc-nand device

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

diff --git a/arch/arm/mach-mx5/devices-imx51.h b/arch/arm/mach-mx5/devices-imx51.h
index 782b45b..41d93c3 100644 (file)
--- a/arch/arm/mach-mx5/devices-imx51.h
+++ b/arch/arm/mach-mx5/devices-imx51.h
@@ -21,6 +21,10 @@ extern const struct imx_imx_uart_1irq_data imx51_imx_uart_data[] __initconst;
 #define imx51_add_imx_uart(id, pdata)  \
        imx_add_imx_uart_1irq(&imx51_imx_uart_data[id], pdata)
 
+extern const struct imx_mxc_nand_data imx51_mxc_nand_data __initconst;
+#define imx51_add_mxc_nand(pdata)      \
+       imx_add_mxc_nand(&imx51_mxc_nand_data, pdata)
+
 extern const struct imx_spi_imx_data imx51_cspi_data __initconst;
 #define imx51_add_cspi(pdata)  \
        imx_add_spi_imx(&imx51_cspi_data, pdata)

diff --git a/arch/arm/plat-mxc/devices/platform-mxc_nand.c b/arch/arm/plat-mxc/devices/platform-mxc_nand.c
index 6d3a478..3fdcc32 100644 (file)
--- a/arch/arm/plat-mxc/devices/platform-mxc_nand.c
+++ b/arch/arm/plat-mxc/devices/platform-mxc_nand.c
@@ -17,6 +17,15 @@
                .irq = soc ## _INT_NFC                                  \
        }
 
+#define imx_mxc_nandv3_data_entry_single(soc, _size)                   \
+       {                                                               \
+               .id = -1,                                               \
+               .iobase = soc ## _NFC_BASE_ADDR,                        \
+               .iosize = _size,                                        \
+               .axibase = soc ## _NFC_AXI_BASE_ADDR,                   \
+               .irq = soc ## _INT_NFC                                  \
+       }
+
 #ifdef CONFIG_SOC_IMX21
 const struct imx_mxc_nand_data imx21_mxc_nand_data __initconst =
        imx_mxc_nand_data_entry_single(MX21, SZ_4K);
@@ -42,12 +51,22 @@ const struct imx_mxc_nand_data imx35_mxc_nand_data __initconst =
        imx_mxc_nand_data_entry_single(MX35, SZ_8K);
 #endif
 
+#ifdef CONFIG_ARCH_MX51
+const struct imx_mxc_nand_data imx51_mxc_nand_data __initconst =
+       imx_mxc_nandv3_data_entry_single(MX51, SZ_16K);
+#endif
+
 struct platform_device *__init imx_add_mxc_nand(
                const struct imx_mxc_nand_data *data,
                const struct mxc_nand_platform_data *pdata)
 {
+       /* AXI has to come first, that's how the mxc_nand driver expect it */
        struct resource res[] = {
                {
+                       .start = data->axibase,
+                       .end = data->axibase + SZ_16K - 1,
+                       .flags = IORESOURCE_MEM,
+               }, {
                        .start = data->iobase,
                        .end = data->iobase + data->iosize - 1,
                        .flags = IORESOURCE_MEM,
@@ -57,6 +76,8 @@ struct platform_device *__init imx_add_mxc_nand(
                        .flags = IORESOURCE_IRQ,
                },
        };
-       return imx_add_platform_device("mxc_nand", 0, res, ARRAY_SIZE(res),
+       return imx_add_platform_device("mxc_nand", data->id,
+                       res + !data->axibase,
+                       ARRAY_SIZE(res) - !data->axibase,
                        pdata, sizeof(*pdata));
 }

diff --git a/arch/arm/plat-mxc/include/mach/devices-common.h b/arch/arm/plat-mxc/include/mach/devices-common.h
index 371336e..f87aa1a 100644 (file)
--- a/arch/arm/plat-mxc/include/mach/devices-common.h
+++ b/arch/arm/plat-mxc/include/mach/devices-common.h
@@ -71,8 +71,15 @@ struct platform_device *__init imx_add_imx_uart_1irq(
 
 #include <mach/mxc_nand.h>
 struct imx_mxc_nand_data {
+       /*
+        * id is traditionally 0, but -1 is more appropriate.  We use -1 for new
+        * machines but don't change existing devices as the nand device usually
+        * appears in the kernel command line to pass its partitioning.
+        */
+       int id;
        resource_size_t iobase;
        resource_size_t iosize;
+       resource_size_t axibase;
        resource_size_t irq;
 };
 struct platform_device *__init imx_add_mxc_nand(

diff --git a/arch/arm/plat-mxc/include/mach/mx51.h b/arch/arm/plat-mxc/include/mach/mx51.h
index b47d65b..c99eeab 100644 (file)
--- a/arch/arm/plat-mxc/include/mach/mx51.h
+++ b/arch/arm/plat-mxc/include/mach/mx51.h
@@ -287,7 +287,7 @@
 #define MX51_MXC_INT_RESV5             5
 #define MX51_MXC_INT_SDMA              6
 #define MX51_MXC_INT_IOMUX             7
-#define MX51_MXC_INT_NFC               8
+#define MX51_INT_NFC                   8
 #define MX51_MXC_INT_VPU               9
 #define MX51_MXC_INT_IPU_ERR           10
 #define MX51_MXC_INT_IPU_SYN           11