]> pilppa.com Git - linux-2.6-omap-h63xx.git/commitdiff
ARM: OMAP: Added common devices.c to plat-omap for I2C and MMC init
authorTony Lindgren <tony@atomide.com>
Thu, 15 Sep 2005 12:10:13 +0000 (15:10 +0300)
committerTony Lindgren <tony@atomide.com>
Thu, 15 Sep 2005 12:10:13 +0000 (15:10 +0300)
Added common devices.c to plat-omap for I2C and MMC init

arch/arm/mach-omap1/devices.c
arch/arm/mach-omap2/board-generic.c
arch/arm/mach-omap2/board-h4.c
arch/arm/plat-omap/Makefile
arch/arm/plat-omap/devices.c [new file with mode: 0644]

index e8b3981444cd0d9da280a58374efa28bd9154bdb..62a9668a5da82a534b18254ca2163bff88fcf2cc 100644 (file)
 #include <asm/arch/mux.h>
 #include <asm/arch/gpio.h>
 
-
-static void omap_nop_release(struct device *dev)
-{
-        /* Nothing */
-}
-
-/*-------------------------------------------------------------------------*/
-
-#if    defined(CONFIG_I2C_OMAP) || defined(CONFIG_I2C_OMAP_MODULE)
-
-#define        OMAP_I2C_BASE           0xfffb3800
-
-static struct resource i2c_resources[] = {
-       {
-               .start          = OMAP_I2C_BASE,
-               .end            = OMAP_I2C_BASE + 0x3f,
-               .flags          = IORESOURCE_MEM,
-       },
-       {
-               .start          = INT_I2C,
-               .flags          = IORESOURCE_IRQ,
-       },
-};
-
-/* DMA not used; works around erratum writing to non-empty i2c fifo */
-
-static struct platform_device omap_i2c_device = {
-        .name           = "i2c_omap",
-        .id             = -1,
-        .dev = {
-                .release        = omap_nop_release,
-        },
-       .num_resources  = ARRAY_SIZE(i2c_resources),
-       .resource       = i2c_resources,
-};
-
-static void omap_init_i2c(void)
-{
-       /* FIXME define and use a boot tag, in case of boards that
-        * either don't wire up I2C, or chips that mux it differently...
-        * it can include clocking and address info, maybe more.
-        */
-       omap_cfg_reg(I2C_SCL);
-       omap_cfg_reg(I2C_SDA);
-
-       (void) platform_device_register(&omap_i2c_device);
-}
-#else
-static inline void omap_init_i2c(void) {}
-#endif
+extern void omap_nop_release(struct device *dev);
 
 /*-------------------------------------------------------------------------*/
 
@@ -110,137 +61,6 @@ static inline void omap_init_irda(void) {}
 
 /*-------------------------------------------------------------------------*/
 
-#if    defined(CONFIG_MMC_OMAP) || defined(CONFIG_MMC_OMAP_MODULE)
-
-#define        OMAP_MMC1_BASE          0xfffb7800
-#define        OMAP_MMC2_BASE          0xfffb7c00      /* omap16xx only */
-
-static struct omap_mmc_conf mmc1_conf;
-
-static u64 mmc1_dmamask = 0xffffffff;
-
-static struct resource mmc1_resources[] = {
-       {
-               .start          = IO_ADDRESS(OMAP_MMC1_BASE),
-               .end            = IO_ADDRESS(OMAP_MMC1_BASE) + 0x7f,
-               .flags          = IORESOURCE_MEM,
-       },
-       {
-               .start          = INT_MMC,
-               .flags          = IORESOURCE_IRQ,
-       },
-};
-
-static struct platform_device mmc_omap_device1 = {
-       .name           = "mmci-omap",
-       .id             = 1,
-       .dev = {
-               .release        = omap_nop_release,
-               .dma_mask       = &mmc1_dmamask,
-               .platform_data  = &mmc1_conf,
-       },
-       .num_resources  = ARRAY_SIZE(mmc1_resources),
-       .resource       = mmc1_resources,
-};
-
-#ifdef CONFIG_ARCH_OMAP16XX
-
-static struct omap_mmc_conf mmc2_conf;
-
-static u64 mmc2_dmamask = 0xffffffff;
-
-static struct resource mmc2_resources[] = {
-       {
-               .start          = IO_ADDRESS(OMAP_MMC2_BASE),
-               .end            = IO_ADDRESS(OMAP_MMC2_BASE) + 0x7f,
-               .flags          = IORESOURCE_MEM,
-       },
-       {
-               .start          = INT_1610_MMC2,
-               .flags          = IORESOURCE_IRQ,
-       },
-};
-
-static struct platform_device mmc_omap_device2 = {
-       .name           = "mmci-omap",
-       .id             = 2,
-       .dev = {
-               .release        = omap_nop_release,
-               .dma_mask       = &mmc2_dmamask,
-               .platform_data  = &mmc2_conf,
-       },
-       .num_resources  = ARRAY_SIZE(mmc2_resources),
-       .resource       = mmc2_resources,
-};
-#endif
-
-static void __init omap_init_mmc(void)
-{
-       const struct omap_mmc_config    *mmc_conf;
-       const struct omap_mmc_conf      *mmc;
-
-       /* NOTE:  assumes MMC was never (wrongly) enabled */
-       mmc_conf = omap_get_config(OMAP_TAG_MMC, struct omap_mmc_config);
-       if (!mmc_conf)
-               return;
-
-       /* block 1 is always available and has just one pinout option */
-       mmc = &mmc_conf->mmc[0];
-       if (mmc->enabled) {
-               omap_cfg_reg(MMC_CMD);
-               omap_cfg_reg(MMC_CLK);
-               omap_cfg_reg(MMC_DAT0);
-               if (cpu_is_omap1710()) {
-                     omap_cfg_reg(M15_1710_MMC_CLKI);
-                     omap_cfg_reg(P19_1710_MMC_CMDDIR);
-                     omap_cfg_reg(P20_1710_MMC_DATDIR0);
-               }
-               if (mmc->wire4) {
-                       omap_cfg_reg(MMC_DAT1);
-                       /* NOTE:  DAT2 can be on W10 (here) or M15 */
-                       if (!mmc->nomux)
-                               omap_cfg_reg(MMC_DAT2);
-                       omap_cfg_reg(MMC_DAT3);
-               }
-               mmc1_conf = *mmc;
-               (void) platform_device_register(&mmc_omap_device1);
-       }
-
-#ifdef CONFIG_ARCH_OMAP16XX
-       /* block 2 is on newer chips, and has many pinout options */
-       mmc = &mmc_conf->mmc[1];
-       if (mmc->enabled) {
-               if (!mmc->nomux) {
-                       omap_cfg_reg(Y8_1610_MMC2_CMD);
-                       omap_cfg_reg(Y10_1610_MMC2_CLK);
-                       omap_cfg_reg(R18_1610_MMC2_CLKIN);
-                       omap_cfg_reg(W8_1610_MMC2_DAT0);
-                       if (mmc->wire4) {
-                               omap_cfg_reg(V8_1610_MMC2_DAT1);
-                               omap_cfg_reg(W15_1610_MMC2_DAT2);
-                               omap_cfg_reg(R10_1610_MMC2_DAT3);
-                       }
-
-                       /* These are needed for the level shifter */
-                       omap_cfg_reg(V9_1610_MMC2_CMDDIR);
-                       omap_cfg_reg(V5_1610_MMC2_DATDIR0);
-                       omap_cfg_reg(W19_1610_MMC2_DATDIR1);
-               }
-
-               /* Feedback clock must be set on OMAP-1710 MMC2 */
-               if (cpu_is_omap1710())
-                       omap_writel(omap_readl(MOD_CONF_CTRL_1) | (1 << 24),
-                                    MOD_CONF_CTRL_1);
-               mmc2_conf = *mmc;
-               (void) platform_device_register(&mmc_omap_device2);
-       }
-#endif
-       return;
-}
-#else
-static inline void omap_init_mmc(void) {}
-#endif
-
 #if    defined(CONFIG_OMAP_RTC) || defined(CONFIG_OMAP_RTC)
 
 #define        OMAP_RTC_BASE           0xfffb4800
@@ -334,18 +154,16 @@ static inline void omap_init_wdt(void) {}
  * may be handled by the boot loader, and drivers should expect it will
  * normally have been done by the time they're probed.
  */
-static int __init omap_init_devices(void)
+static int __init omap1_init_devices(void)
 {
        /* please keep these calls, and their implementations above,
         * in alphabetical order so they're easier to sort through.
         */
-       omap_init_i2c();
        omap_init_irda();
-       omap_init_mmc();
        omap_init_rtc();
        omap_init_wdt();
 
        return 0;
 }
-arch_initcall(omap_init_devices);
+arch_initcall(omap1_init_devices);
 
index f5d94a8bcd0fec545b37a7e3261956b661ddde80..c602e7a3d93e33463699e94cbb9b26c7b7410dbe 100644 (file)
@@ -40,8 +40,19 @@ static struct omap_uart_config generic_uart_config __initdata = {
        .enabled_uarts = ((1 << 0) | (1 << 1) | (1 << 2)),
 };
 
+static struct omap_mmc_config generic_mmc_config __initdata = {
+       .mmc [0] = {
+               .enabled        = 0,
+               .wire4          = 0,
+               .wp_pin         = -1,
+               .power_pin      = -1,
+               .switch_pin     = -1,
+       },
+};
+
 static struct omap_board_config_kernel generic_config[] = {
        { OMAP_TAG_UART,        &generic_uart_config },
+       { OMAP_TAG_MMC,         &generic_mmc_config },
 };
 
 static void __init omap_generic_init(void)
index c58b00f245cd8d24811788aa5c72be32a10987f4..c9b7b2766ac33b9b6c285cbb643787e95de1c3e0 100644 (file)
@@ -6,11 +6,6 @@
  *
  * Modified from mach-omap/omap1/board-generic.c
  *
- * Code for generic OMAP2 board. Should work on many OMAP2 systems where
- * the bootloader passes the board-specific data to the kernel.
- * Do not put any board specific code to this file; create a new machine
- * type if you need custom low-level initializations.
- *
  * 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.
@@ -88,8 +83,19 @@ static struct omap_uart_config h4_uart_config __initdata = {
        .enabled_uarts = ((1 << 0) | (1 << 1) | (1 << 2)),
 };
 
+static struct omap_mmc_config h4_mmc_config __initdata = {
+       .mmc [0] = {
+               .enabled        = 1,
+               .wire4          = 1,
+               .wp_pin         = -1,
+               .power_pin      = -1,
+               .switch_pin     = -1,
+       },
+};
+
 static struct omap_board_config_kernel h4_config[] = {
        { OMAP_TAG_UART,        &h4_uart_config },
+       { OMAP_TAG_MMC,         &h4_mmc_config },
 };
 
 static void __init omap_h4_init(void)
index 092e7405e474ea337276942c3089414f5503afb2..bed117dc03dd8f9b3e66509d708c066962efda36 100644 (file)
@@ -3,7 +3,7 @@
 #
 
 # Common support
-obj-y := common.o sram.o sram-fn.o clock.o dma.o mux.o gpio.o mcbsp.o usb.o
+obj-y := common.o sram.o sram-fn.o clock.o devices.o dma.o mux.o gpio.o mcbsp.o usb.o
 obj-m :=
 obj-n :=
 obj-  :=
diff --git a/arch/arm/plat-omap/devices.c b/arch/arm/plat-omap/devices.c
new file mode 100644 (file)
index 0000000..06b801c
--- /dev/null
@@ -0,0 +1,305 @@
+/*
+ * linux/arch/arm/plat-omap/devices.c
+ *
+ * Common platform device setup/initialization for OMAP1 and OMAP2
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ */
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/init.h>
+#include <linux/device.h>
+
+#include <asm/hardware.h>
+#include <asm/io.h>
+#include <asm/mach-types.h>
+#include <asm/mach/map.h>
+
+#include <asm/arch/tc.h>
+#include <asm/arch/board.h>
+#include <asm/arch/mux.h>
+#include <asm/arch/gpio.h>
+
+
+static void omap_nop_release(struct device *dev)
+{
+        /* Nothing */
+}
+
+/*-------------------------------------------------------------------------*/
+
+#if    defined(CONFIG_I2C_OMAP) || defined(CONFIG_I2C_OMAP_MODULE)
+
+#define        OMAP1_I2C_BASE          0xfffb3800
+#define OMAP2_I2C_BASE1                0x48070000
+#define OMAP2_I2C_BASE2                0x48072000
+#define OMAP_I2C_SIZE          0x3f
+#define OMAP1_I2C_INT          INT_I2C
+#define OMAP2_I2C_INT1         56
+#define OMAP2_I2C_INT2         57
+
+static struct resource i2c_resources1[] = {
+       {
+               .start          = 0,
+               .end            = 0,
+               .flags          = IORESOURCE_MEM,
+       },
+       {
+               .start          = 0,
+               .flags          = IORESOURCE_IRQ,
+       },
+};
+
+/* DMA not used; works around erratum writing to non-empty i2c fifo */
+
+static struct platform_device omap_i2c_device1 = {
+        .name           = "i2c_omap",
+        .id             = 1,
+        .dev = {
+                .release        = omap_nop_release,
+        },
+       .num_resources  = ARRAY_SIZE(i2c_resources1),
+       .resource       = i2c_resources1,
+};
+
+#ifdef CONFIG_ARCH_OMAP24XX
+static struct resource i2c_resources2[] = {
+       {
+               .start          = OMAP2_I2C_BASE2,
+               .end            = OMAP2_I2C_BASE2 + OMAP_I2C_SIZE,
+               .flags          = IORESOURCE_MEM,
+       },
+       {
+               .start          = OMAP2_I2C_INT2,
+               .flags          = IORESOURCE_IRQ,
+       },
+};
+
+static struct platform_device omap_i2c_device2 = {
+        .name           = "i2c_omap",
+        .id             = 2,
+        .dev = {
+                .release        = omap_nop_release,
+        },
+       .num_resources  = ARRAY_SIZE(i2c_resources2),
+       .resource       = i2c_resources2,
+};
+#else
+#define omap_i2c_device2       NULL
+#endif
+
+static void omap_init_i2c(void)
+{
+       if (cpu_is_omap24xx()) {
+               i2c_resources1[0].start = OMAP2_I2C_BASE1;
+               i2c_resources1[0].end = OMAP2_I2C_BASE1 + OMAP_I2C_SIZE;
+               i2c_resources1[1].start = OMAP2_I2C_INT1;
+       } else {
+               i2c_resources1[0].start = OMAP1_I2C_BASE;
+               i2c_resources1[0].end = OMAP1_I2C_BASE + OMAP_I2C_SIZE;
+               i2c_resources1[1].start = OMAP1_I2C_INT;
+       }
+
+       /* FIXME define and use a boot tag, in case of boards that
+        * either don't wire up I2C, or chips that mux it differently...
+        * it can include clocking and address info, maybe more.
+        */
+       if (cpu_is_omap24xx()) {
+               omap_cfg_reg(M19_24XX_I2C1_SCL);
+               omap_cfg_reg(L15_24XX_I2C1_SDA);
+               omap_cfg_reg(J15_24XX_I2C2_SCL);
+               omap_cfg_reg(H19_24XX_I2C2_SDA);
+       } else {
+               omap_cfg_reg(I2C_SCL);
+               omap_cfg_reg(I2C_SDA);
+       }
+
+       (void) platform_device_register(&omap_i2c_device1);
+
+       //if (cpu_is_omap24xx())
+       //      (void) platform_device_register(&omap_i2c_device2);
+}
+#else
+static inline void omap_init_i2c(void) {}
+#endif
+
+/*-------------------------------------------------------------------------*/
+
+#if    defined(CONFIG_MMC_OMAP) || defined(CONFIG_MMC_OMAP_MODULE)
+
+#ifdef CONFIG_ARCH_OMAP24XX
+#define        OMAP_MMC1_BASE          0x4809c000
+#define OMAP_MMC1_INT          83
+#else
+#define        OMAP_MMC1_BASE          0xfffb7800
+#define OMAP_MMC1_INT          INT_MMC
+#endif
+#define        OMAP_MMC2_BASE          0xfffb7c00      /* omap16xx only */
+
+static struct omap_mmc_conf mmc1_conf;
+
+static u64 mmc1_dmamask = 0xffffffff;
+
+static struct resource mmc1_resources[] = {
+       {
+               .start          = IO_ADDRESS(OMAP_MMC1_BASE),
+               .end            = IO_ADDRESS(OMAP_MMC1_BASE) + 0x7f,
+               .flags          = IORESOURCE_MEM,
+       },
+       {
+               .start          = OMAP_MMC1_INT,
+               .flags          = IORESOURCE_IRQ,
+       },
+};
+
+static struct platform_device mmc_omap_device1 = {
+       .name           = "mmci-omap",
+       .id             = 1,
+       .dev = {
+               .release        = omap_nop_release,
+               .dma_mask       = &mmc1_dmamask,
+               .platform_data  = &mmc1_conf,
+       },
+       .num_resources  = ARRAY_SIZE(mmc1_resources),
+       .resource       = mmc1_resources,
+};
+
+#ifdef CONFIG_ARCH_OMAP16XX
+
+static struct omap_mmc_conf mmc2_conf;
+
+static u64 mmc2_dmamask = 0xffffffff;
+
+static struct resource mmc2_resources[] = {
+       {
+               .start          = IO_ADDRESS(OMAP_MMC2_BASE),
+               .end            = IO_ADDRESS(OMAP_MMC2_BASE) + 0x7f,
+               .flags          = IORESOURCE_MEM,
+       },
+       {
+               .start          = INT_1610_MMC2,
+               .flags          = IORESOURCE_IRQ,
+       },
+};
+
+static struct platform_device mmc_omap_device2 = {
+       .name           = "mmci-omap",
+       .id             = 2,
+       .dev = {
+               .release        = omap_nop_release,
+               .dma_mask       = &mmc2_dmamask,
+               .platform_data  = &mmc2_conf,
+       },
+       .num_resources  = ARRAY_SIZE(mmc2_resources),
+       .resource       = mmc2_resources,
+};
+#endif
+
+static void __init omap_init_mmc(void)
+{
+       const struct omap_mmc_config    *mmc_conf;
+       const struct omap_mmc_conf      *mmc;
+
+       /* NOTE:  assumes MMC was never (wrongly) enabled */
+       mmc_conf = omap_get_config(OMAP_TAG_MMC, struct omap_mmc_config);
+       if (!mmc_conf)
+               return;
+
+       /* block 1 is always available and has just one pinout option */
+       mmc = &mmc_conf->mmc[0];
+       if (mmc->enabled) {
+               if (!cpu_is_omap24xx()) {
+                       omap_cfg_reg(MMC_CMD);
+                       omap_cfg_reg(MMC_CLK);
+                       omap_cfg_reg(MMC_DAT0);
+                       if (cpu_is_omap1710()) {
+                               omap_cfg_reg(M15_1710_MMC_CLKI);
+                               omap_cfg_reg(P19_1710_MMC_CMDDIR);
+                               omap_cfg_reg(P20_1710_MMC_DATDIR0);
+                       }
+               }
+               if (mmc->wire4) {
+                       if (!cpu_is_omap24xx()) {
+                               omap_cfg_reg(MMC_DAT1);
+                               /* NOTE:  DAT2 can be on W10 (here) or M15 */
+                               if (!mmc->nomux)
+                                       omap_cfg_reg(MMC_DAT2);
+                               omap_cfg_reg(MMC_DAT3);
+                       }
+               }
+               mmc1_conf = *mmc;
+               (void) platform_device_register(&mmc_omap_device1);
+       }
+
+#ifdef CONFIG_ARCH_OMAP16XX
+       /* block 2 is on newer chips, and has many pinout options */
+       mmc = &mmc_conf->mmc[1];
+       if (mmc->enabled) {
+               if (!mmc->nomux) {
+                       omap_cfg_reg(Y8_1610_MMC2_CMD);
+                       omap_cfg_reg(Y10_1610_MMC2_CLK);
+                       omap_cfg_reg(R18_1610_MMC2_CLKIN);
+                       omap_cfg_reg(W8_1610_MMC2_DAT0);
+                       if (mmc->wire4) {
+                               omap_cfg_reg(V8_1610_MMC2_DAT1);
+                               omap_cfg_reg(W15_1610_MMC2_DAT2);
+                               omap_cfg_reg(R10_1610_MMC2_DAT3);
+                       }
+
+                       /* These are needed for the level shifter */
+                       omap_cfg_reg(V9_1610_MMC2_CMDDIR);
+                       omap_cfg_reg(V5_1610_MMC2_DATDIR0);
+                       omap_cfg_reg(W19_1610_MMC2_DATDIR1);
+               }
+
+               /* Feedback clock must be set on OMAP-1710 MMC2 */
+               if (cpu_is_omap1710())
+                       omap_writel(omap_readl(MOD_CONF_CTRL_1) | (1 << 24),
+                                    MOD_CONF_CTRL_1);
+               mmc2_conf = *mmc;
+               (void) platform_device_register(&mmc_omap_device2);
+       }
+#endif
+       return;
+}
+#else
+static inline void omap_init_mmc(void) {}
+#endif
+
+/*
+ * This gets called after board-specific INIT_MACHINE, and initializes most
+ * on-chip peripherals accessible on this board (except for few like USB):
+ *
+ *  (a) Does any "standard config" pin muxing needed.  Board-specific
+ *     code will have muxed GPIO pins and done "nonstandard" setup;
+ *     that code could live in the boot loader.
+ *  (b) Populating board-specific platform_data with the data drivers
+ *     rely on to handle wiring variations.
+ *  (c) Creating platform devices as meaningful on this board and
+ *     with this kernel configuration.
+ *
+ * Claiming GPIOs, and setting their direction and initial values, is the
+ * responsibility of the device drivers.  So is responding to probe().
+ *
+ * Board-specific knowlege like creating devices or pin setup is to be
+ * kept out of drivers as much as possible.  In particular, pin setup
+ * may be handled by the boot loader, and drivers should expect it will
+ * normally have been done by the time they're probed.
+ */
+static int __init omap_init_devices(void)
+{
+       /* please keep these calls, and their implementations above,
+        * in alphabetical order so they're easier to sort through.
+        */
+       omap_init_i2c();
+       omap_init_mmc();
+
+       return 0;
+}
+arch_initcall(omap_init_devices);
+