diff options
Diffstat (limited to 'target/linux/ubicom32/files/arch/ubicom32/mach-ip7k/board-ip7500media.c')
| -rw-r--r-- | target/linux/ubicom32/files/arch/ubicom32/mach-ip7k/board-ip7500media.c | 732 |
1 files changed, 732 insertions, 0 deletions
diff --git a/target/linux/ubicom32/files/arch/ubicom32/mach-ip7k/board-ip7500media.c b/target/linux/ubicom32/files/arch/ubicom32/mach-ip7k/board-ip7500media.c new file mode 100644 index 000000000..3a51aec2a --- /dev/null +++ b/target/linux/ubicom32/files/arch/ubicom32/mach-ip7k/board-ip7500media.c @@ -0,0 +1,732 @@ +/* + * arch/ubicom32/mach-ip7k/board-ip7500media.c + * Board file for IP7500 media board. + * + * Supports the following configuration + * CPU Module: + * P/N 8007-0510 rev 1.0 NOPHY + * P/N 8007-0511 rev 1.1 NOPHY + * DIP Switch SW2 configuration: + * POS 1: on = PCI enabled + * POS 2: off = TTYX => PF12 + * POS 3: off = TTYY => PF15 + * POS 4: unused + * Media Board: + * P/N 8007-0610 rev 1.0 + * + * LCD Adapter Board: (optional) + * P/N 8007-0920 rev 2.0 + * P/N 8007-0921 rev 2.1 + * + * (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_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 ip7500media_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 ip7500media_portf_sd_cards[] = { + [0] = { + .pin_wp = IP7500MEDIA_IO16, + .wp_polarity = 1, + .pin_pwr = IP7500MEDIA_IO20, + .pin_cd = IP7500MEDIA_IO23, + }, + [1] = { + .pin_wp = IP7500MEDIA_IO17, + .wp_polarity = 1, + .pin_pwr = IP7500MEDIA_IO21, + .pin_cd = IP7500MEDIA_IO24, + }, +}; + +static struct ubicom32sd_platform_data ip7500media_portf_sd_platform_data = { + .ncards = 2, + .cards = ip7500media_portf_sd_cards, +}; + +static struct platform_device ip7500media_portf_sd_device = { + .name = "ubicom32sd", + .id = 0, + .resource = ip7500media_portf_sd_resources, + .num_resources = ARRAY_SIZE(ip7500media_portf_sd_resources), + .dev = { + .platform_data = &ip7500media_portf_sd_platform_data, + }, + +}; + +/* + * ip7500media_portf_sd_init + */ +static void ip7500media_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 + */ + ip7500media_portf_sd_resources[0].start = sd_node->dn.sendirq; + ip7500media_portf_sd_resources[1].start = sd_node->dn.recvirq; + ip7500media_portf_sd_resources[2].start = (u32_t)&(sd_node->regs); + ip7500media_portf_sd_resources[2].end = (u32_t)&(sd_node->regs) + sizeof(sd_node->regs); + + platform_device_register(&ip7500media_portf_sd_device); +} + +/****************************************************************************** + * SD/IO Port B (Slot 2) platform data + */ +static struct resource ip7500media_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 ip7500media_portb_sd_cards[] = { + [0] = { + .pin_wp = IP7500MEDIA_IO19, + .wp_polarity = 1, + .pin_pwr = IP7500MEDIA_IO22, + .pin_cd = IP7500MEDIA_IO18, + }, +}; + +static struct ubicom32sd_platform_data ip7500media_portb_sd_platform_data = { + .ncards = 1, + .cards = ip7500media_portb_sd_cards, +}; + +static struct platform_device ip7500media_portb_sd_device = { + .name = "ubicom32sd", + .id = 1, + .resource = ip7500media_portb_sd_resources, + .num_resources = ARRAY_SIZE(ip7500media_portb_sd_resources), + .dev = { + .platform_data = &ip7500media_portb_sd_platform_data, + }, + +}; + +/* + * ip7500media_portb_sd_init + */ +static void ip7500media_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 + */ + ip7500media_portb_sd_resources[0].start = sd_node->dn.sendirq; + ip7500media_portb_sd_resources[1].start = sd_node->dn.recvirq; + ip7500media_portb_sd_resources[2].start = (u32_t)&(sd_node->regs); + ip7500media_portb_sd_resources[2].end = (u32_t)&(sd_node->regs) + sizeof(sd_node->regs); + + platform_device_register(&ip7500media_portb_sd_device); +} + +/* + * ip7500media_u17_setup + * Called by I2C to tell us that u17 is setup. + * + * This function is called by I2C to tell us that u17 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 u17 is the SDIO + */ +static int __init ip7500media_u17_setup(struct i2c_client *client, unsigned gpio, unsigned ngpio, void *context) +{ + /* + * Initialize the Port F/Port B SD slots (only the enabled ports will init) + */ + ip7500media_portf_sd_init(); + ip7500media_portb_sd_init(); + + return 0; +} + +/****************************************************************************** + * LCD VGH on the board at PE6 + */ +static struct ubicom32lcdpower_platform_data ip7500media_lcdpower_data = { + .vgh_gpio = GPIO_RE_7, + .vgh_polarity = true, +}; + +static struct platform_device ip7500media_lcdpower_device = { + .name = "ubicom32lcdpower", + .id = -1, + .dev = { + .platform_data = &ip7500media_lcdpower_data, + }, +}; + +/****************************************************************************** + * Backlight on the board PD0, hardware PWM + */ +static struct ubicom32bl_platform_data ip7500media_backlight_data = { + .type = UBICOM32BL_TYPE_PWM, + .pwm_channel = 2, + .pwm_prescale = 15, + .pwm_period = 60, + .default_intensity = 0x80, +}; + +static struct platform_device ip7500media_backlight_device = { + .name = "ubicom32bl", + .id = -1, + .dev = { + .platform_data = &ip7500media_backlight_data, + }, +}; + +/****************************************************************************** + * Ubicom32Input on I2C, U15 MAX7310, address 0x18, 8 bits + */ +static struct ubicom32input_i2c_button ip7500media_ubicom32input_i2c_u15_buttons[] = { + { + .type = EV_KEY, + .code = KEY_LEFT, + .bit = 0, + .active_low = 1, + }, + { + .type = EV_KEY, + .code = KEY_RIGHT, + .bit = 1, + .active_low = 1, + }, + { + .type = EV_KEY, + .code = KEY_UP, + .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 ip7500media_ubicom32input_i2c_u15_platform_data = { + .buttons = ip7500media_ubicom32input_i2c_u15_buttons, + .nbuttons = ARRAY_SIZE(ip7500media_ubicom32input_i2c_u15_buttons), + .name = "Ubicom32 Input I2C U15", +}; + +/****************************************************************************** + * Additional GPIO chips + */ +static struct pca953x_platform_data ip7500media_gpio_u16_platform_data = { + .gpio_base = IP7500MEDIA_U16_BASE, +}; + +static struct pca953x_platform_data ip7500media_gpio_u17_platform_data = { + .gpio_base = IP7500MEDIA_U17_BASE, + .setup = ip7500media_u17_setup, +}; + +static struct pca953x_platform_data ip7500media_gpio_u18_platform_data = { + .gpio_base = IP7500MEDIA_U18_BASE, +}; + + +/****************************************************************************** + * Touch controller present on LCD Adapter board + * + * Connected via I2C bus, interrupt on PD1 + */ +#include <linux/i2c/tsc2007.h> + +/* + * ip7500media_tsc2007_exit_platform_hw + */ +static void ip7500media_tsc2007_exit_platform_hw(void) +{ + UBICOM32_IO_PORT(RD)->int_mask &= ~(1 << 11); + UBICOM32_IO_PORT(RD)->ctl2 &= ~(0x03 << 16); + gpio_free(GPIO_RD_1); +} + +/* + * ip7500media_tsc2007_init_platform_hw + */ +static int ip7500media_tsc2007_init_platform_hw(void) +{ + int res = gpio_request(GPIO_RD_1, "TSC2007_IRQ"); + if (res) { + return res; + } + UBICOM32_IO_PORT(RD)->function = 0; + UBICOM32_IO_PORT(RD)->int_mask = (1 << 11); + UBICOM32_IO_PORT(RD)->ctl2 &= ~(0x03 << 16); + UBICOM32_IO_PORT(RD)->ctl2 |= (0x02 << 16); + + return 0; +} + +/* + * ip7500media_tsc2007_clear_penirq + */ +static void ip7500media_tsc2007_clear_penirq(void) +{ + UBICOM32_IO_PORT(RD)->int_clr = (1 << 11); +} + +/* + * ip7500media_tsc2007_get_pendown_state + */ +static int ip7500media_tsc2007_get_pendown_state(void) +{ + return !gpio_get_value(GPIO_RD_1); +} + +static struct tsc2007_platform_data ip7500media_tsc2007_data = { + .model = 2007, + .x_plate_ohms = 350, + .get_pendown_state = ip7500media_tsc2007_get_pendown_state, + .init_platform_hw = ip7500media_tsc2007_init_platform_hw, + .exit_platform_hw = ip7500media_tsc2007_exit_platform_hw, + .clear_penirq = ip7500media_tsc2007_clear_penirq, +}; + +/****************************************************************************** + * Devices on the I2C bus + * + * BEWARE of changing the order of things in this array as we depend on + * certain things to be in certain places. + */ +static struct i2c_board_info __initdata ip7500media_i2c_board_info[] = { + /* + * U6, CS4350 DAC, address 0x4B + */ + { + .type = "cs4350", + .addr = 0x4B, + }, + + /* + * U14, S35390A RTC, address 0x30 + */ + { + .type = "s35390a", + .addr = 0x30, + }, + + /* + * U15, MAX7310 IO expander, 8 bits, address 0x18 + * IO0: User I/O (J16-1) (Left) IO4: User I/O (J16-5) (Enter) + * IO1: User I/O (J16-2) (Right) IO5: User I/O (J16-6) (Menu) + * IO2: User I/O (J16-3) (Up) IO6: User I/O (J16-7) (Back) + * IO3: User I/O (J16-4) (Down) IO7: User I/O (J16-8) + */ + { + .type = "ubicom32in_max7310", + .addr = 0x18, + .platform_data = &ip7500media_ubicom32input_i2c_u15_platform_data, + }, + + /* + * U16, MAX7310 IO expander, 8 bits, address 0x1C + * IO8 : User I/O (J16-9) IO12: User I/O (J16-17) + * IO9 : User I/O (J16-10) IO13: User I/O (J16-18) + * IO10: User I/O (J16-15) IO14: User I/O (J16-19) + * IO11: User I/O (J16-16) IO15: User I/O (J16-20) + */ + { + .type = "max7310", + .addr = 0x1C, + .platform_data = &ip7500media_gpio_u16_platform_data, + }, + + /* + * U17, MAX7310 IO expander, 8 bits, address 0x1A + * IO16: SDIO1A_WP IO20: SD1A_PWREN + * IO17: SDIO1B_WP IO21: SD1B_PWREN + * IO18: SDIO2_CD IO22: SD2_PWREN + * IO19: SDIO2_WP IO23: SDIO1A_CD + * + */ + { + .type = "max7310", + .addr = 0x1A, + .platform_data = &ip7500media_gpio_u17_platform_data, + }, + + /* + * U18, MAX7310 IOB expander, 8 bits, address 0x1E + * IO24: SDIO1B_CD IO28: User I/O TP6 + * IO25: User I/O TP9 IO29: User I/O TP5 + * IO26: User I/O TP8 IO30: User I/O TP4 + * IO27: User I/O TP7 IO31: User I/O TP3 + */ + { + .type = "max7310", + .addr = 0x1E, + .platform_data = &ip7500media_gpio_u18_platform_data, + }, +}; + +/* + * Additional I2C devices to add when a LCD adapter board is present + */ +static struct i2c_board_info __initdata ip7500media_lcd_adapter_i2c_board_info[] = { + { + I2C_BOARD_INFO("tsc2007", 0x48), + .irq = PORT_OTHER_INT(RD), + .platform_data = &ip7500media_tsc2007_data, + }, +}; + +/* + * I2C bus on the board, SDA PE4, SCL PE5 + */ +static struct i2c_gpio_platform_data ip7500media_i2c_data = { + .sda_pin = GPIO_RE_4, + .scl_pin = GPIO_RE_5, + .sda_is_open_drain = 0, + .scl_is_open_drain = 0, + .udelay = 50, +}; + +static struct platform_device ip7500media_i2c_device = { + .name = "i2c-gpio", + .id = 0, + .dev = { + .platform_data = &ip7500media_i2c_data, + }, +}; + +/* + * Virtual Frame Buffer device for use with LCD Adapter + */ +static struct platform_device ip7500media_vfb_device = { + .name = "ubicom32vfb", + .id = -1, +}; + +/* + * vdc_override: + * 0: no override (auto-detect) + * 1: force vdc usage + * 2: force lcd adapter usage + */ +static int __initdata vdc_override = 0; + +/* + * ip7500media_set_forcevdc + * Called when forcevdc is present on the kernel boot line + */ +static int __init ip7500media_set_forcevdc(char *str) +{ + if (str[0] == '1') { + vdc_override = 1; + } else { + vdc_override = 2; + } + return 1; +} + +/* + * ip7500media_video_init + * Called late to determine what kind of video we have on this board + */ +static int __init ip7500media_video_init(void) +{ + struct i2c_adapter *adap; + struct i2c_msg msg[1]; + unsigned char *data; + unsigned char checksum; + int err; + int i; + + if (vdc_override == 1) { + printk(KERN_INFO "Force VDCTIO mode\n"); + goto no_adapter; + } + if (vdc_override == 2) { + printk(KERN_INFO "Force LCD Adapter Board mode\n"); + return 0; + } + + /* + * Check to see if there is an EEPROM out there. If we see an + * EEPROM then we will assume a LCD Adapter Board (8007-092x) + * exists. + */ + data = kmalloc(256, GFP_KERNEL); + if (!data) { + printk(KERN_WARNING "%s: Failed to allocate memory\n", __FUNCTION__); + return -ENOMEM; + } + + adap = i2c_get_adapter(0); + if (!adap) { + printk(KERN_WARNING "%s: Failed to get i2c adapter\n", __FUNCTION__); + kfree(data); + return -ENODEV; + } + data[0] = 0; + msg->addr = 0x50; + msg->flags = 0; + msg->len = 1; + msg->buf = data; + err = i2c_transfer(adap, msg, 1); + if (err < 0) { + goto no_adapter; + } + + msg->addr = 0x50; + msg->flags = I2C_M_RD; + msg->len = 256; + msg->buf = data; + err = i2c_transfer(adap, msg, 1); + if (err < 0) { + goto no_adapter; + } + + i2c_put_adapter(adap); + + /* + * Verify the checksum + */ + checksum = 0xff; + for (i = 0; i < 255; i++) { + checksum ^= data[i]; + } + if (checksum != data[255]) { + printk(KERN_WARNING "%s: Checksum mismatch\n", __FUNCTION__); + } + + kfree(data); + + /* + * Bring up VFB + */ + platform_device_register(&ip7500media_vfb_device); + + /* + * Add the i2c devices on the LCD Adapter board. (We have to use i2c_new_device + * since it's late in the boot process.) + */ + printk(KERN_INFO "%s: registering LCD Adapter board i2c resources\n", __FUNCTION__); + for (i = 0; i < ARRAY_SIZE(ip7500media_lcd_adapter_i2c_board_info); i++) { + i2c_new_device(adap, &ip7500media_lcd_adapter_i2c_board_info[i]); + } + + i2c_put_adapter(adap); + + return 0; + + /* + * No LCD Adapter board, bring up VDC + */ +no_adapter: + vdc_tio_init(); + return 0; +} +late_initcall(ip7500media_video_init); +__setup("forcevdc=", ip7500media_set_forcevdc); + +/* + * ip7500media_init + * Called to add the devices which we have on this board + */ +static int __init ip7500media_init(void) +{ + struct platform_device *audio_dev; + int have_ethernet = (devtree_find_node("eth_lan") != 0); + + board_init(); + + ubi_gpio_init(); + +#ifdef CONFIG_UIO_UBICOM32RING + ring_tio_init("decoder_ring"); +#endif + + /* + * Register all of the devices we have on this board + */ + printk(KERN_INFO "%s: registering device resources\n", __FUNCTION__); + platform_device_register(&ip7500media_i2c_device); + platform_device_register(&ip7500media_backlight_device); + + /* + * If ethernet doesn't exist then we can init the lcdpower + */ + if (!have_ethernet) { + platform_device_register(&ip7500media_lcdpower_device); + } + + /* + * Allocate the audio drivers. SPDIF not supported on boards with ethernet. + */ + audio_dev = audio_device_alloc("snd-ubi32-cs4350", "audio", "audio-i2sout", 0); + if (audio_dev) { + ip7500media_i2c_board_info[0].platform_data = audio_dev; + } + + if (!have_ethernet) { + struct platform_device *audio_dev2; + + audio_dev2 = audio_device_alloc("snd-ubi32-generic", "audio", "audio-spdifout", 0); + if (audio_dev2) { + platform_device_register(audio_dev2); + } + } + + /* + * 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, ip7500media_i2c_board_info, ARRAY_SIZE(ip7500media_i2c_board_info)); + + /* + * We have to initialize the SDIO after the I2C IOB gets setup. SDIO is initialized in + * ip7500media_u17_setup + */ + + printk("IP7500 Media Board\n"); + + return 0; +} + +arch_initcall(ip7500media_init); |