diff options
Diffstat (limited to 'target/linux/ubicom32/files/arch/ubicom32/mach-ip7k/board-ip7145dpf.c')
| -rw-r--r-- | target/linux/ubicom32/files/arch/ubicom32/mach-ip7k/board-ip7145dpf.c | 715 |
1 files changed, 715 insertions, 0 deletions
diff --git a/target/linux/ubicom32/files/arch/ubicom32/mach-ip7k/board-ip7145dpf.c b/target/linux/ubicom32/files/arch/ubicom32/mach-ip7k/board-ip7145dpf.c new file mode 100644 index 000000000..d3348d30f --- /dev/null +++ b/target/linux/ubicom32/files/arch/ubicom32/mach-ip7k/board-ip7145dpf.c @@ -0,0 +1,715 @@ +/* + * arch/ubicom32/mach-ip7k/board-ip7145dpf.c + * Board file for IP7145DPF, rev 1.0, P/N 8007-0410 + * + * (C) Copyright 2009, Ubicom, Inc. + * + * This file is part of the Ubicom32 Linux Kernel Port. + * + * The Ubicom32 Linux Kernel Port 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. + * + * The Ubicom32 Linux Kernel Port is distributed in the hope that it + * will be useful, but WITHOUT ANY WARRANTY; without even the implied + * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See + * the GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with the Ubicom32 Linux Kernel Port. If not, + * see <http://www.gnu.org/licenses/>. + * + * Ubicom32 implementation derived from (with many thanks): + * arch/m68knommu + * arch/blackfin + * arch/parisc + */ +#include <linux/device.h> +#include <linux/platform_device.h> +#include <linux/gpio.h> + +#include <linux/input.h> + +#include <linux/i2c.h> +#include <linux/i2c-gpio.h> +#include <linux/i2c/pca953x.h> + +#include <asm/board.h> +#include <asm/machdep.h> +#include <asm/ubicom32input.h> +#include <asm/ubicom32input_i2c.h> +#include <asm/ubicom32bl.h> +#include <asm/ubicom32lcdpower.h> +#include <asm/vdc_tio.h> + +#include <asm/ubicom32sd.h> +#include <asm/sd_tio.h> +#include <asm/devtree.h> +#include <asm/audio.h> + +#include <asm/ring_tio.h> + +/****************************************************************************** + * SD/IO Port F (Slot 1) platform data + */ +static struct resource ip7145dpf_portf_sd_resources[] = { + /* + * Send IRQ + */ + [0] = { + /* + * The init routine will query the devtree and fill this in + */ + .flags = IORESOURCE_IRQ, + }, + + /* + * Receive IRQ + */ + [1] = { + /* + * The init routine will query the devtree and fill this in + */ + .flags = IORESOURCE_IRQ, + }, + + /* + * Memory Mapped Registers + */ + [2] = { + /* + * The init routine will query the devtree and fill this in + */ + .flags = IORESOURCE_MEM, + }, +}; + +static struct ubicom32sd_card ip7145dpf_portf_sd_cards[] = { + [0] = { + .pin_wp = IP7145DPF_IOB0, + .wp_polarity = 1, + .pin_pwr = IP7145DPF_IOB4, + .pin_cd = GPIO_RA_4, + }, + [1] = { + .pin_wp = IP7145DPF_IOB1, + .wp_polarity = 1, + .pin_pwr = IP7145DPF_IOB5, + .pin_cd = GPIO_RA_6, + }, +}; + +static struct ubicom32sd_platform_data ip7145dpf_portf_sd_platform_data = { + .ncards = 2, + .cards = ip7145dpf_portf_sd_cards, +}; + +static struct platform_device ip7145dpf_portf_sd_device = { + .name = "ubicom32sd", + .id = 0, + .resource = ip7145dpf_portf_sd_resources, + .num_resources = ARRAY_SIZE(ip7145dpf_portf_sd_resources), + .dev = { + .platform_data = &ip7145dpf_portf_sd_platform_data, + }, + +}; + +/* + * ip7145dpf_portf_sd_init + */ +static void ip7145dpf_portf_sd_init(void) +{ + /* + * Check the device tree for the sd_tio + */ + struct sd_tio_node *sd_node = (struct sd_tio_node *)devtree_find_node("portf_sd"); + if (!sd_node) { + printk(KERN_INFO "PortF SDTIO not found\n"); + return; + } + + /* + * Fill in the resources and platform data from devtree information + */ + ip7145dpf_portf_sd_resources[0].start = sd_node->dn.sendirq; + ip7145dpf_portf_sd_resources[1].start = sd_node->dn.recvirq; + ip7145dpf_portf_sd_resources[2].start = (u32_t)&(sd_node->regs); + ip7145dpf_portf_sd_resources[2].end = (u32_t)&(sd_node->regs) + sizeof(sd_node->regs); + + platform_device_register(&ip7145dpf_portf_sd_device); +} + +/****************************************************************************** + * SD/IO Port B (Slot 2) platform data + */ +static struct resource ip7145dpf_portb_sd_resources[] = { + /* + * Send IRQ + */ + [0] = { + /* + * The init routine will query the devtree and fill this in + */ + .flags = IORESOURCE_IRQ, + }, + + /* + * Receive IRQ + */ + [1] = { + /* + * The init routine will query the devtree and fill this in + */ + .flags = IORESOURCE_IRQ, + }, + + /* + * Memory Mapped Registers + */ + [2] = { + /* + * The init routine will query the devtree and fill this in + */ + .flags = IORESOURCE_MEM, + }, +}; + +static struct ubicom32sd_card ip7145dpf_portb_sd_cards[] = { + [0] = { + .pin_wp = IP7145DPF_IOB2, + .wp_polarity = 1, + .pin_pwr = IP7145DPF_IOB6, + .pin_cd = IP7145DPF_IOB3, + }, +}; + +static struct ubicom32sd_platform_data ip7145dpf_portb_sd_platform_data = { + .ncards = 1, + .cards = ip7145dpf_portb_sd_cards, +}; + +static struct platform_device ip7145dpf_portb_sd_device = { + .name = "ubicom32sd", + .id = 1, + .resource = ip7145dpf_portb_sd_resources, + .num_resources = ARRAY_SIZE(ip7145dpf_portb_sd_resources), + .dev = { + .platform_data = &ip7145dpf_portb_sd_platform_data, + }, + +}; + +/* + * ip7145dpf_portb_sd_init + */ +static void ip7145dpf_portb_sd_init(void) +{ + /* + * Check the device tree for the sd_tio + */ + struct sd_tio_node *sd_node = (struct sd_tio_node *)devtree_find_node("portb_sd"); + if (!sd_node) { + printk(KERN_INFO "PortB SDTIO not found\n"); + return; + } + + /* + * Fill in the resources and platform data from devtree information + */ + ip7145dpf_portb_sd_resources[0].start = sd_node->dn.sendirq; + ip7145dpf_portb_sd_resources[1].start = sd_node->dn.recvirq; + ip7145dpf_portb_sd_resources[2].start = (u32_t)&(sd_node->regs); + ip7145dpf_portb_sd_resources[2].end = (u32_t)&(sd_node->regs) + sizeof(sd_node->regs); + + platform_device_register(&ip7145dpf_portb_sd_device); +} + + +#ifdef IP7145DPF_USE_MMC_SPI +/****************************************************************************** + * SPI over GPIO (MMC_SPI) + */ +#include <linux/spi/spi.h> +#include <linux/spi/mmc_spi.h> +#include <linux/mmc/host.h> +#include <asm/ubicom32-spi-gpio.h> + +#define MMC_CS GPIO_RF_5 // PF5 D3 +#define MMC_CD GPIO_RA_4 // PA4 CD +#define MMC_WP IP7145DPF_IOB0 // IOB0 WP +#define MMC_PWR IP7145DPF_IOB4 // IOB4 PWR + +/* + * SPI bus over GPIO (for SD card) + */ +static struct ubicom32_spi_gpio_platform_data ip7145dpf_spi_gpio_data = { + .pin_mosi = GPIO_RF_0, // PF0 CMD + .pin_miso = GPIO_RF_2, // PF2 D0 + .pin_clk = GPIO_RF_1, // PF1 CLK + .bus_num = 0, // We'll call this SPI bus 0 + .num_chipselect = 1, // only one device on this SPI bus +}; + +static struct platform_device ip7145dpf_spi_gpio_device = { + .name = "ubicom32-spi-gpio", + .id = 0, + .dev = { + .platform_data = &ip7145dpf_spi_gpio_data, + }, +}; + +/* + * ip7145dpf_mmc_spi_setpower_slot_a + * Set the power state for slot A + */ +static void ip7145dpf_mmc_spi_setpower_slot_a(struct device *dev, unsigned int vdd) +{ + struct mmc_spi_platform_data *pd = dev->platform_data; + + /* + * Power is inverted, we could tell the IOB to do it, but it's cleaner this way. + */ + if ((1 << vdd) & pd->ocr_mask) { + gpio_set_value(MMC_PWR, 0); + return; + } + gpio_set_value(MMC_PWR, 1); +} + +/* + * ip7145dpf_mmc_spi_get_cd_slot_a + * Get the CD bit for slot A + */ +static int ip7145dpf_mmc_spi_get_cd_slot_a(struct device *dev) +{ + /* + * Note that the sense of the GPIO is inverted + */ + return !gpio_get_value(MMC_CD); +} + +/* + * ip7145dpf_mmc_spi_get_ro_slot_a + * Get the WP bit for slot A + */ +static int ip7145dpf_mmc_spi_get_ro_slot_a(struct device *dev) +{ + /* + * Note that the sense of the GPIO is inverted, we could tell the IOB to do it, but + * it's clearer this way. + */ + return !gpio_get_value(MMC_WP); +} + +/* + * ip7145dpf_mmc_spi_exit_slot_a + * Free the appropriate GPIOs for slot A SD slot. + */ +static void ip7145dpf_mmc_spi_exit_slot_a(struct device *dev, void *appdata) +{ + gpio_free(MMC_CD); + gpio_free(MMC_CS); + gpio_free(MMC_WP); + gpio_free(MMC_PWR); + platform_device_unregister(&ip7145dpf_spi_gpio_device); +} + +/* + * ip7145dpf_mmc_spi_init_slot_a + * Allocate the appropriate GPIOs for slot A SD slot. + * WP is on IOB0, CD is PA4, CS is on PF5 + * TODO: make CD an interrupt + */ +static int ip7145dpf_mmc_spi_init_slot_a(void) +{ + int ret = gpio_request(MMC_CD, "mmc-a-cd"); + if (ret) { + printk(KERN_ERR "%s: could not request mmc-a-cd pin\n", __FUNCTION__); + return -ENOSYS; + } + gpio_direction_input(MMC_CD); + + ret = gpio_request(MMC_CS, "mmc-a-cs"); + if (ret) { + printk(KERN_ERR "%s: could not request mmc-a-cs pin\n", __FUNCTION__); + goto no_cs; + } + gpio_direction_output(MMC_CS, 0); + + ret = gpio_request(MMC_WP, "mmc-a-wp"); + if (ret) { + printk(KERN_ERR "%s: could not request mmc-a-wp pin\n", __FUNCTION__); + goto no_wp; + } + gpio_direction_input(MMC_WP); + + /* + * Start off with power off + */ + ret = gpio_request(MMC_PWR, "mmc-a-pwr"); + if (ret) { + printk(KERN_ERR "%s: could not request mmc-a-pwr pin\n", __FUNCTION__); + goto no_pwr; + } + ret = gpio_direction_output(MMC_PWR, 1); + + return 0; + +no_pwr: + gpio_free(MMC_WP); + +no_wp: + gpio_free(MMC_CS); + +no_cs: + gpio_free(MMC_CD); + return -ENOSYS; +} + +/* + * MMC_SPI driver (currently bitbang) + */ +static struct mmc_spi_platform_data ip7145dpf_mmc_platform_data = { + .ocr_mask = MMC_VDD_33_34, + .exit = ip7145dpf_mmc_spi_exit_slot_a, + .get_ro = ip7145dpf_mmc_spi_get_ro_slot_a, + .get_cd = ip7145dpf_mmc_spi_get_cd_slot_a, + + .setpower = ip7145dpf_mmc_spi_setpower_slot_a, + .powerup_msecs = 500, + + .detect_delay = 100, + + .caps = MMC_CAP_NEEDS_POLL, +}; + +static struct ubicom32_spi_gpio_controller_data ip7145dpf_mmc_controller_data = { + .pin_cs = MMC_CS, +}; + +static struct spi_board_info ip7145dpf_spi_board_info[] = { + { + .modalias = "mmc_spi", + .bus_num = 0, + .chip_select = 0, + .max_speed_hz = 2000000, + .platform_data = &ip7145dpf_mmc_platform_data, + .controller_data = &ip7145dpf_mmc_controller_data, + } +}; +#endif /* IP7145DPF_USE_MMC_SPI */ + +/* + * ip7145dpf_u72_setup + * Called by I2C to tell us that u72 is setup. + * + * This function is called by I2C to tell us that u72 has been setup. All + * devices which rely on this chip being initialized (or even present) need to + * be initialized in this function otherwise they may get initialized too early. + * + * Currently the only device depending on u72 is the SPI + */ +static int __init ip7145dpf_u72_setup(struct i2c_client *client, unsigned gpio, unsigned ngpio, void *context) +{ +#ifdef IP7145DPF_USE_MMC_SPI + if (ip7145dpf_mmc_spi_init_slot_a()) { + printk(KERN_ERR "%s: could not request mmc resources\n", __FUNCTION__); + } else { + printk(KERN_INFO "%s: registering SPI resources\n", __FUNCTION__); + spi_register_board_info(ip7145dpf_spi_board_info, ARRAY_SIZE(ip7145dpf_spi_board_info)); + platform_device_register(&ip7145dpf_spi_gpio_device); + } +#else + /* + * Initialize the Port F/Port B SD slots + */ + ip7145dpf_portf_sd_init(); + ip7145dpf_portb_sd_init(); +#endif + return 0; +} + +/****************************************************************************** + * LCD VGH on the board at PE6 + */ +static struct ubicom32lcdpower_platform_data ip7145dpf_lcdpower_data = { + .vgh_gpio = GPIO_RE_6, + .vgh_polarity = true, +}; + +static struct platform_device ip7145dpf_lcdpower_device = { + .name = "ubicom32lcdpower", + .id = -1, + .dev = { + .platform_data = &ip7145dpf_lcdpower_data, + }, +}; + +/****************************************************************************** + * Backlight on the board PD0, hardware PWM + */ +static struct ubicom32bl_platform_data ip7145dpf_backlight_data = { + .type = UBICOM32BL_TYPE_PWM, + .pwm_channel = 2, + .pwm_prescale = 15, + .pwm_period = 60, + .default_intensity = 0x80, +}; + +static struct platform_device ip7145dpf_backlight_device = { + .name = "ubicom32bl", + .id = -1, + .dev = { + .platform_data = &ip7145dpf_backlight_data, + }, +}; + +/****************************************************************************** + * Ubicom32Input on I2C, U48 MAX7310, address 0x18, 8 bits + */ +static struct ubicom32input_i2c_button ip7145dpf_ubicom32input_i2c_u48_buttons[] = { + { + .type = EV_KEY, + .code = KEY_UP, + .bit = 0, + .active_low = 1, + }, + { + .type = EV_KEY, + .code = KEY_LEFT, + .bit = 1, + .active_low = 1, + }, + { + .type = EV_KEY, + .code = KEY_RIGHT, + .bit = 2, + .active_low = 1, + }, + { + .type = EV_KEY, + .code = KEY_DOWN, + .bit = 3, + .active_low = 1, + }, + { + .type = EV_KEY, + .code = KEY_ENTER, + .bit = 4, + .active_low = 1, + }, + { + .type = EV_KEY, + .code = KEY_MENU, + .bit = 5, + .active_low = 1, + }, + { + .type = EV_KEY, + .code = KEY_ESC, + .bit = 6, + .active_low = 1, + }, +}; + +static struct ubicom32input_i2c_platform_data ip7145dpf_ubicom32input_i2c_u48_platform_data = { + .buttons = ip7145dpf_ubicom32input_i2c_u48_buttons, + .nbuttons = ARRAY_SIZE(ip7145dpf_ubicom32input_i2c_u48_buttons), + .name = "Ubicom32 Input I2C U48", +}; + +/****************************************************************************** + * Additional GPIO chips + */ +static struct pca953x_platform_data ip7145dpf_gpio_u72_platform_data = { + .gpio_base = IP7145DPF_U72_BASE, + .setup = ip7145dpf_u72_setup, +}; + +/****************************************************************************** + * Devices on the I2C bus + */ +static struct i2c_board_info __initdata ip7145dpf_i2c_board_info[] = { + /* + * U51, S35390A RTC, address 0x30 + */ + { + .type = "s35390a", + .addr = 0x30, + }, + + /* + * U48, MAX7310 IO expander, 8 bits, address 0x18 + */ + { + .type = "ubicom32in_max7310", + .addr = 0x18, + .platform_data = &ip7145dpf_ubicom32input_i2c_u48_platform_data, + }, + + /* + * U72, MAX7310 IOB expander, 8 bits, address 0x19 + */ + { + .type = "max7310", + .addr = 0x19, + .platform_data = &ip7145dpf_gpio_u72_platform_data, + }, +}; + +/* + * I2C bus on the board, SDA PE1, SCL PE2 + */ +static struct i2c_gpio_platform_data ip7145dpf_i2c_data = { + .sda_pin = GPIO_RE_1, + .scl_pin = GPIO_RE_2, + .sda_is_open_drain = 0, + .scl_is_open_drain = 0, +}; + +static struct platform_device ip7145dpf_i2c_device = { + .name = "i2c-gpio", + .id = 0, + .dev = { + .platform_data = &ip7145dpf_i2c_data, + }, +}; + +/****************************************************************************** + * Use ubicom32input driver to monitor the various pushbuttons on this board. + * + * WPS PF12 + * FACT_DEFAULT PF13 + * POWER PE4 + * + * Not sutable for the keypad buttons since those run on I2C GPIO. The polling + * of ubicom32input would seem to be excessive for this. + * + * TODO: pick some ubicom understood EV_xxx define for WPS and Fact Default + */ +static struct ubicom32input_button ip7145dpf_ubicom32input_buttons[] = { + { + .type = EV_KEY, + .code = KEY_FN_F1, + .gpio = GPIO_RF_12, + .desc = "WPS", + .active_low = 1, + }, + { + .type = EV_KEY, + .code = KEY_FN_F2, + .gpio = GPIO_RF_13, + .desc = "Factory Default", + .active_low = 1, + }, + { + .type = EV_KEY, + .code = KEY_POWER, + .gpio = GPIO_RE_4, + .desc = "Power", + .active_low = 1, + }, +}; + +static struct ubicom32input_platform_data ip7145dpf_ubicom32input_data = { + .buttons = ip7145dpf_ubicom32input_buttons, + .nbuttons = ARRAY_SIZE(ip7145dpf_ubicom32input_buttons), +}; + +static struct platform_device ip7145dpf_ubicom32input_device = { + .name = "ubicom32input", + .id = -1, + .dev = { + .platform_data = &ip7145dpf_ubicom32input_data, + }, +}; + +/* + * List of all devices in our system + */ +static struct platform_device *ip7145dpf_devices[] __initdata = { + &ip7145dpf_i2c_device, + &ip7145dpf_lcdpower_device, + &ip7145dpf_backlight_device, + &ip7145dpf_ubicom32input_device, +}; + +/* + * ip7145dpf_power_off + * Called to turn the power off for this board + */ +static void ip7145dpf_power_off(void) +{ + gpio_set_value(GPIO_RE_5, 0); +} + +/* + * ip7145dpf_init + * Called to add the devices which we have on this board + */ +static int __init ip7145dpf_init(void) +{ + int ret; + struct platform_device *audio_dev; + + ubi_gpio_init(); + +#ifdef CONFIG_UIO_UBICOM32RING + ring_tio_init("decoder_ring"); +#endif + + /* + * Start up the video driver first + */ + vdc_tio_init(); + + /* + * Take over holding of the power from the system + */ + ret = gpio_request(GPIO_RE_5, "power_hold"); + if (ret) { + printk(KERN_ERR "%s: could not request power hold GPIO\n", __FUNCTION__); + } + gpio_direction_output(GPIO_RE_5, 1); + mach_power_off = ip7145dpf_power_off; + + /* + * USB SEL_HOST_USB line + */ + ret = gpio_request(GPIO_RF_11, "SEL_HOST_USB"); + if (ret) { + printk(KERN_ERR "%s: could not request SEL_HOST_USB GPIO\n", __FUNCTION__); + } + gpio_direction_output(GPIO_RF_11, 0); + + /* + * Setup audio + */ + audio_dev = audio_device_alloc("snd-ubi32-generic", "audio", "audio-i2sout", 0); + if (audio_dev) { + platform_device_register(audio_dev); + } + + /* + * Register all of the devices we have on this board + */ + printk(KERN_INFO "%s: registering device resources\n", __FUNCTION__); + platform_add_devices(ip7145dpf_devices, ARRAY_SIZE(ip7145dpf_devices)); + + /* + * Register all of the devices which sit on the I2C bus + */ + printk(KERN_INFO "%s: registering i2c resources\n", __FUNCTION__); + i2c_register_board_info(0, ip7145dpf_i2c_board_info, ARRAY_SIZE(ip7145dpf_i2c_board_info)); + + /* + * We have to initialize the SPI after the I2C IOB gets setup. SPI is initialized in + * ip7145dpf_u72_setup + */ + + return 0; +} + +arch_initcall(ip7145dpf_init); |