1 files changed, 575 insertions, 0 deletions

diff --git a/arch/arm/mach-pxa/imote2.c b/arch/arm/mach-pxa/imote2.c
new file mode 100644
index 000000000000..364c5e271330
--- /dev/null
+++ b/arch/arm/mach-pxa/imote2.c
@@ -0,0 +1,575 @@
+/*
+ * linux/arch/arm/mach-pxa/imote2.c
+ *
+ * Author:      Ed C. Epp
+ * Created:     Nov 05, 2002
+ * Copyright:   Intel Corp.
+ *
+ * Modified 2008:  Jonathan Cameron
+ *
+ * The Imote2 is a wireless sensor node platform sold
+ * by Crossbow (www.xbow.com).
+ */
+
+#include <linux/init.h>
+#include <linux/device.h>
+#include <linux/mtd/mtd.h>
+#include <linux/mtd/partitions.h>
+#include <linux/platform_device.h>
+#include <linux/regulator/machine.h>
+#include <linux/gpio.h>
+#include <linux/leds.h>
+#include <linux/spi/spi.h>
+#include <linux/i2c.h>
+#include <linux/mfd/da903x.h>
+
+#include <asm/mach-types.h>
+#include <asm/mach/arch.h>
+#include <asm/mach/map.h>
+#include <asm/mach/flash.h>
+
+#include <mach/i2c.h>
+#include <mach/pxa-regs.h>
+#include <mach/pxa2xx-regs.h>
+#include <mach/mfp-pxa27x.h>
+#include <mach/regs-ssp.h>
+#include <mach/udc.h>
+#include <mach/mmc.h>
+#include <mach/pxa2xx_spi.h>
+#include <mach/pxa27x-udc.h>
+
+#include "devices.h"
+#include "generic.h"
+
+static unsigned long imote2_pin_config[] __initdata = {
+
+        /* Device Identification for wakeup*/
+        GPIO102_GPIO,
+
+        /* Button */
+        GPIO91_GPIO,
+
+        /* DA9030 */
+        GPIO1_GPIO,
+
+        /* MMC */
+        GPIO32_MMC_CLK,
+        GPIO112_MMC_CMD,
+        GPIO92_MMC_DAT_0,
+        GPIO109_MMC_DAT_1,
+        GPIO110_MMC_DAT_2,
+        GPIO111_MMC_DAT_3,
+
+        /* 802.15.4 radio - driver out of mainline */
+        GPIO22_GPIO,                    /* CC_RSTN */
+        GPIO114_GPIO,                   /* CC_FIFO */
+        GPIO116_GPIO,                   /* CC_CCA */
+        GPIO0_GPIO,                     /* CC_FIFOP */
+        GPIO16_GPIO,                    /* CCSFD */
+        GPIO39_GPIO,                    /* CSn */
+        GPIO115_GPIO,                   /* Power enable */
+
+        /* I2C */
+        GPIO117_I2C_SCL,
+        GPIO118_I2C_SDA,
+
+        /* SSP 3 - 802.15.4 radio */
+        GPIO39_GPIO,                    /* Chip Select */
+        GPIO34_SSP3_SCLK,
+        GPIO35_SSP3_TXD,
+        GPIO41_SSP3_RXD,
+
+        /* SSP 2 - to daughter boards */
+        GPIO37_GPIO,                    /* Chip Select */
+        GPIO36_SSP2_SCLK,
+        GPIO38_SSP2_TXD,
+        GPIO11_SSP2_RXD,
+
+        /* SSP 1 - to daughter boards */
+        GPIO24_GPIO,                    /* Chip Select */
+        GPIO23_SSP1_SCLK,
+        GPIO25_SSP1_TXD,
+        GPIO26_SSP1_RXD,
+
+        /* BTUART Basic Connector*/
+        GPIO42_BTUART_RXD,
+        GPIO43_BTUART_TXD,
+        GPIO44_BTUART_CTS,
+        GPIO45_BTUART_RTS,
+
+        /* STUART Serial console via debug board*/
+        GPIO46_STUART_RXD,
+        GPIO47_STUART_TXD,
+
+        /* Basic sensor board */
+        GPIO96_GPIO,    /* accelerometer interrupt */
+        GPIO99_GPIO,    /* ADC interrupt */
+
+        /* Connector pins specified as gpios */
+        GPIO94_GPIO, /* large basic connector pin 14 */
+        GPIO10_GPIO, /* large basic connector pin 23 */
+
+        /* LEDS */
+        GPIO103_GPIO, /* red led */
+        GPIO104_GPIO, /* green led */
+        GPIO105_GPIO, /* blue led */
+};
+
+static struct gpio_led imote2_led_pins[] = {
+        {
+                .name       =  "imote2:red",
+                .gpio       = 103,
+                .active_low = 1,
+        }, {
+                .name       = "imote2:green",
+                .gpio       = 104,
+                .active_low = 1,
+        }, {
+                .name       = "imote2:blue",
+                .gpio       = 105,
+                .active_low = 1,
+        },
+};
+
+static struct gpio_led_platform_data imote2_led_data = {
+        .num_leds = ARRAY_SIZE(imote2_led_pins),
+        .leds     = imote2_led_pins,
+};
+
+static struct platform_device imote2_leds = {
+        .name = "leds-gpio",
+        .id   = -1,
+        .dev = {
+                .platform_data = &imote2_led_data,
+        },
+};
+
+/* Reverse engineered partly from Platformx drivers */
+enum imote2_ldos{
+        vcc_vref,
+        vcc_cc2420,
+        vcc_mica,
+        vcc_bt,
+        /* The two voltages available to sensor boards */
+        vcc_sensor_1_8,
+        vcc_sensor_3,
+
+        vcc_sram_ext, /* directly connected to the pxa271 */
+        vcc_pxa_pll,
+        vcc_pxa_usim, /* Reference voltage for certain gpios */
+        vcc_pxa_mem,
+        vcc_pxa_flash,
+        vcc_pxa_core, /*Dc-Dc buck not yet supported */
+        vcc_lcd,
+        vcc_bb,
+        vcc_bbio,
+        vcc_io, /* cc2420 802.15.4 radio and pxa vcc_io ?*/
+};
+
+/* The values of the various regulator constraints are obviously dependent
+ * on exactly what is wired to each ldo.  Unfortunately this information is
+ * not generally available.  More information has been requested from Xbow
+ * but as of yet they haven't been forthcoming.
+ *
+ * Some of these are clearly Stargate 2 related (no way of plugging
+ * in an lcd on the IM2 for example!).
+ */
+static struct regulator_init_data imote2_ldo_init_data[] = {
+        [vcc_bbio] = {
+                .constraints = { /* board default 1.8V */
+                        .name = "vcc_bbio",
+                        .min_uV = 1800000,
+                        .max_uV = 1800000,
+                },
+        },
+        [vcc_bb] = {
+                .constraints = { /* board default 2.8V */
+                        .name = "vcc_bb",
+                        .min_uV = 2700000,
+                        .max_uV = 3000000,
+                },
+        },
+        [vcc_pxa_flash] = {
+                .constraints = {/* default is 1.8V */
+                        .name = "vcc_pxa_flash",
+                        .min_uV = 1800000,
+                        .max_uV = 1800000,
+                },
+        },
+        [vcc_cc2420] = { /* also vcc_io */
+                .constraints = {
+                        /* board default is 2.8V */
+                        .name = "vcc_cc2420",
+                        .min_uV = 2700000,
+                        .max_uV = 3300000,
+                },
+        },
+        [vcc_vref] = { /* Reference for what? */
+                .constraints = { /* default 1.8V */
+                        .name = "vcc_vref",
+                        .min_uV = 1800000,
+                        .max_uV = 1800000,
+                },
+        },
+        [vcc_sram_ext] = {
+                .constraints = { /* default 2.8V */
+                        .name = "vcc_sram_ext",
+                        .min_uV = 2800000,
+                        .max_uV = 2800000,
+                },
+        },
+        [vcc_mica] = {
+                .constraints = { /* default 2.8V */
+                        .name = "vcc_mica",
+                        .min_uV = 2800000,
+                        .max_uV = 2800000,
+                },
+        },
+        [vcc_bt] = {
+                .constraints = { /* default 2.8V */
+                        .name = "vcc_bt",
+                        .min_uV = 2800000,
+                        .max_uV = 2800000,
+                },
+        },
+        [vcc_lcd] = {
+                .constraints = { /* default 2.8V */
+                        .name = "vcc_lcd",
+                        .min_uV = 2700000,
+                        .max_uV = 3300000,
+                },
+        },
+        [vcc_io] = { /* Same or higher than everything
+                          * bar vccbat and vccusb */
+                .constraints = { /* default 2.8V */
+                        .name = "vcc_io",
+                        .min_uV = 2692000,
+                        .max_uV = 3300000,
+                },
+        },
+        [vcc_sensor_1_8] = {
+                .constraints = { /* default 1.8V */
+                        .name = "vcc_sensor_1_8",
+                        .min_uV = 1800000,
+                        .max_uV = 1800000,
+                },
+        },
+        [vcc_sensor_3] = { /* curiously default 2.8V */
+                .constraints = {
+                        .name = "vcc_sensor_3",
+                        .min_uV = 2800000,
+                        .max_uV = 3000000,
+                },
+        },
+        [vcc_pxa_pll] = { /* 1.17V - 1.43V, default 1.3V*/
+                .constraints = {
+                        .name = "vcc_pxa_pll",
+                        .min_uV = 1170000,
+                        .max_uV = 1430000,
+                },
+        },
+        [vcc_pxa_usim] = {
+                .constraints = { /* default 1.8V */
+                        .name = "vcc_pxa_usim",
+                        .min_uV = 1710000,
+                        .max_uV = 2160000,
+                },
+        },
+        [vcc_pxa_mem] = {
+                .constraints = { /* default 1.8V */
+                        .name = "vcc_pxa_mem",
+                        .min_uV = 1800000,
+                        .max_uV = 1800000,
+                },
+        },
+};
+
+static struct da903x_subdev_info imote2_da9030_subdevs[] = {
+        {
+                .name = "da903x-regulator",
+                .id = DA9030_ID_LDO2,
+                .platform_data = &imote2_ldo_init_data[vcc_bbio],
+        }, {
+                .name = "da903x-regulator",
+                .id = DA9030_ID_LDO3,
+                .platform_data = &imote2_ldo_init_data[vcc_bb],
+        }, {
+                .name = "da903x-regulator",
+                .id = DA9030_ID_LDO4,
+                .platform_data = &imote2_ldo_init_data[vcc_pxa_flash],
+        }, {
+                .name = "da903x-regulator",
+                .id = DA9030_ID_LDO5,
+                .platform_data = &imote2_ldo_init_data[vcc_cc2420],
+        }, {
+                .name = "da903x-regulator",
+                .id = DA9030_ID_LDO6,
+                .platform_data = &imote2_ldo_init_data[vcc_vref],
+        }, {
+                .name = "da903x-regulator",
+                .id = DA9030_ID_LDO7,
+                .platform_data = &imote2_ldo_init_data[vcc_sram_ext],
+        }, {
+                .name = "da903x-regulator",
+                .id = DA9030_ID_LDO8,
+                .platform_data = &imote2_ldo_init_data[vcc_mica],
+        }, {
+                .name = "da903x-regulator",
+                .id = DA9030_ID_LDO9,
+                .platform_data = &imote2_ldo_init_data[vcc_bt],
+        }, {
+                .name = "da903x-regulator",
+                .id = DA9030_ID_LDO10,
+                .platform_data = &imote2_ldo_init_data[vcc_sensor_1_8],
+        }, {
+                .name = "da903x-regulator",
+                .id = DA9030_ID_LDO11,
+                .platform_data = &imote2_ldo_init_data[vcc_sensor_3],
+        }, {
+                .name = "da903x-regulator",
+                .id = DA9030_ID_LDO12,
+                .platform_data = &imote2_ldo_init_data[vcc_lcd],
+        }, {
+                .name = "da903x-regulator",
+                .id = DA9030_ID_LDO15,
+                .platform_data = &imote2_ldo_init_data[vcc_pxa_pll],
+        }, {
+                .name = "da903x-regulator",
+                .id = DA9030_ID_LDO17,
+                .platform_data = &imote2_ldo_init_data[vcc_pxa_usim],
+        }, {
+                .name = "da903x-regulator",
+                .id = DA9030_ID_LDO18,
+                .platform_data = &imote2_ldo_init_data[vcc_io],
+        }, {
+                .name = "da903x-regulator",
+                .id = DA9030_ID_LDO19,
+                .platform_data = &imote2_ldo_init_data[vcc_pxa_mem],
+        },
+};
+
+static struct da903x_platform_data imote2_da9030_pdata = {
+        .num_subdevs = ARRAY_SIZE(imote2_da9030_subdevs),
+        .subdevs = imote2_da9030_subdevs,
+};
+
+/* As the the imote2 doesn't currently have a conventional SD slot
+ * there is no option to hotplug cards, making all this rather simple
+ */
+static int imote2_mci_get_ro(struct device *dev)
+{
+        return 0;
+}
+
+/* Rather simple case as hotplugging not possible */
+static struct pxamci_platform_data imote2_mci_platform_data = {
+        .ocr_mask = MMC_VDD_32_33 | MMC_VDD_33_34, /* default anyway */
+        .get_ro = imote2_mci_get_ro,
+};
+
+static struct mtd_partition imote2flash_partitions[] = {
+        {
+                .name = "Bootloader",
+                .size = 0x00040000,
+                .offset = 0,
+                .mask_flags = MTD_WRITEABLE,
+        }, {
+                .name = "Kernel",
+                .size = 0x00200000,
+                .offset = 0x00040000,
+                .mask_flags = 0,
+        }, {
+                .name = "Filesystem",
+                .size = 0x01DC0000,
+                .offset = 0x00240000,
+                .mask_flags = 0,
+        },
+};
+
+static struct resource flash_resources = {
+        .start = PXA_CS0_PHYS,
+        .end = PXA_CS0_PHYS + SZ_32M - 1,
+        .flags = IORESOURCE_MEM,
+};
+
+static struct flash_platform_data imote2_flash_data = {
+        .map_name = "cfi_probe",
+        .parts = imote2flash_partitions,
+        .nr_parts = ARRAY_SIZE(imote2flash_partitions),
+        .name = "PXA27xOnChipROM",
+        .width = 2,
+};
+
+static struct platform_device imote2_flash_device = {
+        .name = "pxa2xx-flash",
+        .id = 0,
+        .dev = {
+                .platform_data = &imote2_flash_data,
+        },
+        .resource = &flash_resources,
+        .num_resources = 1,
+};
+
+/* Some of the drivers here are out of kernel at the moment (parts of IIO)
+ * and it may be a while before they are in the mainline.
+ */
+static struct i2c_board_info __initdata imote2_i2c_board_info[] = {
+        { /* UCAM sensor board */
+                .type = "max1238",
+                .addr = 0x35,
+        }, { /* ITS400 Sensor board only */
+                .type = "max1363",
+                .addr = 0x34,
+                /* Through a nand gate - Also beware, on V2 sensor board the
+                 * pull up resistors are missing.
+                 */
+                .irq = IRQ_GPIO(99),
+        }, { /* ITS400 Sensor board only */
+                .type = "tsl2561",
+                .addr = 0x49,
+                /* Through a nand gate - Also beware, on V2 sensor board the
+                 * pull up resistors are missing.
+                 */
+                .irq = IRQ_GPIO(99),
+        }, { /* ITS400 Sensor board only */
+                .type = "tmp175",
+                .addr = 0x4A,
+                .irq = IRQ_GPIO(96),
+        },
+};
+
+static struct i2c_board_info __initdata imote2_pwr_i2c_board_info[] = {
+        {
+                .type = "da9030",
+                .addr = 0x49,
+                .platform_data = &imote2_da9030_pdata,
+                .irq = gpio_to_irq(1),
+        },
+};
+
+static struct pxa2xx_spi_master pxa_ssp_master_0_info = {
+        .num_chipselect = 1,
+};
+
+static struct pxa2xx_spi_master pxa_ssp_master_1_info = {
+        .num_chipselect = 1,
+};
+
+static struct pxa2xx_spi_master pxa_ssp_master_2_info = {
+        .num_chipselect = 1,
+};
+
+/* Patch posted by Eric Miao <eric.miao@marvell.com> will remove
+ * the need for these functions.
+ */
+static void spi1control(u32 command)
+{
+        gpio_set_value(24, command & PXA2XX_CS_ASSERT ? 0 : 1);
+};
+
+static void spi3control(u32 command)
+{
+        gpio_set_value(39, command & PXA2XX_CS_ASSERT ? 0 : 1);
+};
+
+static struct pxa2xx_spi_chip staccel_chip_info = {
+        .tx_threshold = 8,
+        .rx_threshold = 8,
+        .dma_burst_size = 8,
+        .timeout = 235,
+        .cs_control = spi1control,
+};
+
+static struct pxa2xx_spi_chip cc2420_info = {
+        .tx_threshold = 8,
+        .rx_threshold = 8,
+        .dma_burst_size = 8,
+        .timeout = 235,
+        .cs_control = spi3control,
+};
+
+static struct spi_board_info spi_board_info[] __initdata = {
+        { /* Driver in IIO */
+                .modalias = "lis3l02dq",
+                .max_speed_hz = 8000000,/* 8MHz max spi frequency at 3V */
+                .bus_num = 1,
+                .chip_select = 0,
+                .controller_data = &staccel_chip_info,
+                .irq = IRQ_GPIO(96),
+        }, { /* Driver out of kernel as it needs considerable rewriting */
+                .modalias = "cc2420",
+                .max_speed_hz = 6500000,
+                .bus_num = 3,
+                .chip_select = 0,
+                .controller_data = &cc2420_info,
+        },
+};
+
+static void im2_udc_command(int cmd)
+{
+        switch (cmd) {
+        case PXA2XX_UDC_CMD_CONNECT:
+                UP2OCR |=  UP2OCR_HXOE | UP2OCR_DPPUE | UP2OCR_DPPUBE;
+                break;
+        case PXA2XX_UDC_CMD_DISCONNECT:
+                UP2OCR &= ~(UP2OCR_HXOE | UP2OCR_DPPUE | UP2OCR_DPPUBE);
+                break;
+        }
+}
+
+static struct pxa2xx_udc_mach_info imote2_udc_info __initdata = {
+        .udc_command            = im2_udc_command,
+};
+
+static struct platform_device *imote2_devices[] = {
+        &imote2_flash_device,
+        &imote2_leds,
+};
+
+static struct i2c_pxa_platform_data i2c_pwr_pdata = {
+        .fast_mode = 1,
+};
+
+static struct i2c_pxa_platform_data i2c_pdata = {
+        .fast_mode = 1,
+};
+
+static void __init imote2_init(void)
+{
+
+        pxa2xx_mfp_config(ARRAY_AND_SIZE(imote2_pin_config));
+        /* SPI chip select directions - all other directions should
+         * be handled by drivers.*/
+        gpio_direction_output(37, 0);
+        gpio_direction_output(24, 0);
+        gpio_direction_output(39, 0);
+
+        platform_add_devices(imote2_devices, ARRAY_SIZE(imote2_devices));
+
+        pxa2xx_set_spi_info(1, &pxa_ssp_master_0_info);
+        pxa2xx_set_spi_info(2, &pxa_ssp_master_1_info);
+        pxa2xx_set_spi_info(3, &pxa_ssp_master_2_info);
+
+        spi_register_board_info(spi_board_info, ARRAY_SIZE(spi_board_info));
+
+        i2c_register_board_info(0, imote2_i2c_board_info,
+                                ARRAY_SIZE(imote2_i2c_board_info));
+        i2c_register_board_info(1, imote2_pwr_i2c_board_info,
+                                ARRAY_SIZE(imote2_pwr_i2c_board_info));
+
+        pxa27x_set_i2c_power_info(&i2c_pwr_pdata);
+        pxa_set_i2c_info(&i2c_pdata);
+
+        pxa_set_mci_info(&imote2_mci_platform_data);
+        pxa_set_udc_info(&imote2_udc_info);
+}
+
+MACHINE_START(INTELMOTE2, "IMOTE 2")
+        .phys_io        = 0x40000000,
+        .io_pg_offst    = (io_p2v(0x40000000) >> 18) & 0xfffc,
+        .map_io         = pxa_map_io,
+        .init_irq       = pxa27x_init_irq,
+        .timer          = &pxa_timer,
+        .init_machine   = imote2_init,
+        .boot_params    = 0xA0000100,
+MACHINE_END