/*
* linux/arch/arm/mach-omap1/board-osk.c
*
* Board specific init for OMAP5912 OSK
*
* Written by Dirk Behme <[email protected]>
*
* 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.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
* NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <linux/gpio/consumer.h>
#include <linux/gpio/driver.h>
#include <linux/gpio/machine.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <linux/i2c.h>
#include <linux/leds.h>
#include <linux/smc91x.h>
#include <linux/omapfb.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
#include <linux/mtd/physmap.h>
#include <linux/mfd/tps65010.h>
#include <linux/platform_data/gpio-omap.h>
#include <linux/platform_data/omap1_bl.h>
#include <linux/soc/ti/omap1-io.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include "tc.h"
#include "flash.h"
#include "mux.h"
#include "hardware.h"
#include "usb.h"
#include "common.h"
/* Name of the GPIO chip used by the OMAP for GPIOs 0..15 */
#define OMAP_GPIO_LABEL "gpio-0-15"
/* At OMAP5912 OSK the Ethernet is directly connected to CS1 */
#define OMAP_OSK_ETHR_START 0x04800300
/* TPS65010 has four GPIOs. nPG and LED2 can be treated like GPIOs with
* alternate pin configurations for hardware-controlled blinking.
*/
#define OSK_TPS_GPIO_USB_PWR_EN 0
#define OSK_TPS_GPIO_LED_D3 1
#define OSK_TPS_GPIO_LAN_RESET 2
#define OSK_TPS_GPIO_DSP_PWR_EN 3
#define OSK_TPS_GPIO_LED_D9 4
#define OSK_TPS_GPIO_LED_D2 5
static struct mtd_partition osk_partitions[] = {
/* bootloader (U-Boot, etc) in first sector */
{
.name = "bootloader",
.offset = 0,
.size = SZ_128K,
.mask_flags = MTD_WRITEABLE, /* force read-only */
},
/* bootloader params in the next sector */
{
.name = "params",
.offset = MTDPART_OFS_APPEND,
.size = SZ_128K,
.mask_flags = 0,
}, {
.name = "kernel",
.offset = MTDPART_OFS_APPEND,
.size = SZ_2M,
.mask_flags = 0
}, {
.name = "filesystem",
.offset = MTDPART_OFS_APPEND,
.size = MTDPART_SIZ_FULL,
.mask_flags = 0
}
};
static struct physmap_flash_data osk_flash_data = {
.width = 2,
.set_vpp = omap1_set_vpp,
.parts = osk_partitions,
.nr_parts = ARRAY_SIZE(osk_partitions),
};
static struct resource osk_flash_resource = {
/* this is on CS3, wherever it's mapped */
.flags = IORESOURCE_MEM,
};
static struct platform_device osk5912_flash_device = {
.name = "physmap-flash",
.id = 0,
.dev = {
.platform_data = &osk_flash_data,
},
.num_resources = 1,
.resource = &osk_flash_resource,
};
static struct smc91x_platdata osk5912_smc91x_info = {
.flags = SMC91X_USE_16BIT | SMC91X_NOWAIT,
.leda = RPC_LED_100_10,
.ledb = RPC_LED_TX_RX,
};
static struct resource osk5912_smc91x_resources[] = {
[0] = {
.start = OMAP_OSK_ETHR_START, /* Physical */
.end = OMAP_OSK_ETHR_START + 0xf,
.flags = IORESOURCE_MEM,
},
[1] = {
.flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
},
};
static struct platform_device osk5912_smc91x_device = {
.name = "smc91x",
.id = -1,
.dev = {
.platform_data = &osk5912_smc91x_info,
},
.num_resources = ARRAY_SIZE(osk5912_smc91x_resources),
.resource = osk5912_smc91x_resources,
};
static struct resource osk5912_cf_resources[] = {
[0] = {
.flags = IORESOURCE_IRQ,
},
[1] = {
.flags = IORESOURCE_MEM,
},
};
static struct platform_device osk5912_cf_device = {
.name = "omap_cf",
.id = -1,
.num_resources = ARRAY_SIZE(osk5912_cf_resources),
.resource = osk5912_cf_resources,
};
static struct platform_device *osk5912_devices[] __initdata = {
&osk5912_flash_device,
&osk5912_smc91x_device,
&osk5912_cf_device,
};
static const struct gpio_led tps_leds[] = {
/* NOTE: D9 and D2 have hardware blink support.
* Also, D9 requires non-battery power.
*/
{ .name = "d9", .default_trigger = "disk-activity", },
{ .name = "d2", },
{ .name = "d3", .default_trigger = "heartbeat", },
};
static struct gpiod_lookup_table tps_leds_gpio_table = {
.dev_id = "leds-gpio",
.table = {
/* Use local offsets on TPS65010 */
GPIO_LOOKUP_IDX("tps65010", OSK_TPS_GPIO_LED_D9, NULL, 0, GPIO_ACTIVE_HIGH),
GPIO_LOOKUP_IDX("tps65010", OSK_TPS_GPIO_LED_D2, NULL, 1, GPIO_ACTIVE_HIGH),
GPIO_LOOKUP_IDX("tps65010", OSK_TPS_GPIO_LED_D3, NULL, 2, GPIO_ACTIVE_LOW),
{ }
},
};
static struct gpio_led_platform_data tps_leds_data = {
.num_leds = 3,
.leds = tps_leds,
};
static struct platform_device osk5912_tps_leds = {
.name = "leds-gpio",
.id = 0,
.dev.platform_data = &tps_leds_data,
};
/* The board just hold these GPIOs hogged from setup to teardown */
static struct gpio_desc *eth_reset;
static struct gpio_desc *vdd_dsp;
static int osk_tps_setup(struct i2c_client *client, struct gpio_chip *gc)
{
struct gpio_desc *d;
if (!IS_BUILTIN(CONFIG_TPS65010))
return -ENOSYS;
/* Set GPIO 1 HIGH to disable VBUS power supply;
* OHCI driver powers it up/down as needed.
*/
d = gpiochip_request_own_desc(gc, OSK_TPS_GPIO_USB_PWR_EN, "n_vbus_en",
GPIO_ACTIVE_HIGH, GPIOD_OUT_HIGH);
/* Free the GPIO again as the driver will request it */
gpiochip_free_own_desc(d);
/* Set GPIO 2 high so LED D3 is off by default */
tps65010_set_gpio_out_value(GPIO2, HIGH);
/* Set GPIO 3 low to take ethernet out of reset */
eth_reset = gpiochip_request_own_desc(gc, OSK_TPS_GPIO_LAN_RESET, "smc_reset",
GPIO_ACTIVE_HIGH, GPIOD_OUT_LOW);
/* GPIO4 is VDD_DSP */
vdd_dsp = gpiochip_request_own_desc(gc, OSK_TPS_GPIO_DSP_PWR_EN, "dsp_power",
GPIO_ACTIVE_HIGH, GPIOD_OUT_HIGH);
/* REVISIT if DSP support isn't configured, power it off ... */
/* Let LED1 (D9) blink; leds-gpio may override it */
tps65010_set_led(LED1, BLINK);
/* Set LED2 off by default */
tps65010_set_led(LED2, OFF);
/* Enable LOW_PWR handshake */
tps65010_set_low_pwr(ON);
/* Switch VLDO2 to 3.0V for AIC23 */
tps65010_config_vregs1(TPS_LDO2_ENABLE | TPS_VLDO2_3_0V
| TPS_LDO1_ENABLE);
/* register these three LEDs */
osk5912_tps_leds.dev.parent = &client->dev;
gpiod_add_lookup_table(&tps_leds_gpio_table);
platform_device_register(&osk5912_tps_leds);
return 0;
}
static void osk_tps_teardown(struct i2c_client *client, struct gpio_chip *gc)
{
gpiochip_free_own_desc(eth_reset);
gpiochip_free_own_desc(vdd_dsp);
}
static struct tps65010_board tps_board = {
.outmask = 0x0f,
.setup = osk_tps_setup,
.teardown = osk_tps_teardown,
};
static struct i2c_board_info __initdata osk_i2c_board_info[] = {
{
/* This device will get the name "i2c-tps65010" */
I2C_BOARD_INFO("tps65010", 0x48),
.dev_name = "tps65010",
.platform_data = &tps_board,
},
{
I2C_BOARD_INFO("tlv320aic23", 0x1B),
},
/* TODO when driver support is ready:
* - optionally on Mistral, ov9640 camera sensor at 0x30
*/
};
static void __init osk_init_smc91x(void)
{
u32 l;
/* Check EMIFS wait states to fix errors with SMC_GET_PKT_HDR */
l = omap_readl(EMIFS_CCS(1));
l |= 0x3;
omap_writel(l, EMIFS_CCS(1));
}
static void __init osk_init_cf(int seg)
{
struct resource *res = &osk5912_cf_resources[1];
omap_cfg_reg(M7_1610_GPIO62);
switch (seg) {
/* NOTE: CS0 could be configured too ... */
case 1:
res->start = OMAP_CS1_PHYS;
break;
case 2:
res->start = OMAP_CS2_PHYS;
break;
case 3:
res->start = omap_cs3_phys();
break;
}
res->end = res->start + SZ_8K - 1;
osk5912_cf_device.dev.platform_data = (void *)(uintptr_t)seg;
/* NOTE: better EMIFS setup might support more cards; but the
* TRM only shows how to affect regular flash signals, not their
* CF/PCMCIA variants...
*/
pr_debug("%s: cs%d, previous ccs %08x acs %08x\n", __func__,
seg, omap_readl(EMIFS_CCS(seg)), omap_readl(EMIFS_ACS(seg)));
omap_writel(0x0004a1b3, EMIFS_CCS(seg)); /* synch mode 4 etc */
omap_writel(0x00000000, EMIFS_ACS(seg)); /* OE hold/setup */
}
static struct gpiod_lookup_table osk_usb_gpio_table = {
.dev_id = "ohci",
.table = {
/* Power GPIO on the I2C-attached TPS65010 */
GPIO_LOOKUP("tps65010", OSK_TPS_GPIO_USB_PWR_EN, "power",
GPIO_ACTIVE_HIGH),
GPIO_LOOKUP(OMAP_GPIO_LABEL, 9, "overcurrent",
GPIO_ACTIVE_HIGH),
{ }
},
};
static struct omap_usb_config osk_usb_config __initdata = {
/* has usb host connector (A) ... for development it can also
* be used, with a NONSTANDARD gender-bending cable/dongle, as
* a peripheral.
*/
#if IS_ENABLED(CONFIG_USB_OMAP)
.register_dev = 1,
.hmc_mode = 0,
#else
.register_host = 1,
.hmc_mode = 16,
.rwc = 1,
#endif
.pins[0] = 2,
};
#define EMIFS_CS3_VAL (0x88013141)
static struct gpiod_lookup_table osk_irq_gpio_table = {
.dev_id = NULL,
.table = {
/* GPIO used for SMC91x IRQ */
GPIO_LOOKUP(OMAP_GPIO_LABEL, 0, "smc_irq",
GPIO_ACTIVE_HIGH),
/* GPIO used for CF IRQ */
GPIO_LOOKUP("gpio-48-63", 14, "cf_irq",
GPIO_ACTIVE_HIGH),
/* GPIO used by the TPS65010 chip */
GPIO_LOOKUP("mpuio", 1, "tps65010",
GPIO_ACTIVE_HIGH),
/* GPIOs used for serial wakeup IRQs */
GPIO_LOOKUP_IDX("gpio-32-47", 5, "wakeup", 0,
GPIO_ACTIVE_HIGH),
GPIO_LOOKUP_IDX("gpio-16-31", 2, "wakeup", 1,
GPIO_ACTIVE_HIGH),
GPIO_LOOKUP_IDX("gpio-48-63", 1, "wakeup", 2,
GPIO_ACTIVE_HIGH),
{ }
},
};
static void __init osk_init(void)
{
struct gpio_desc *d;
u32 l;
osk_init_smc91x();
osk_init_cf(2); /* CS2 */
/* Workaround for wrong CS3 (NOR flash) timing
* There are some U-Boot versions out there which configure
* wrong CS3 memory timings. This mainly leads to CRC
* or similar errors if you use NOR flash (e.g. with JFFS2)
*/
l = omap_readl(EMIFS_CCS(3));
if (l != EMIFS_CS3_VAL)
omap_writel(EMIFS_CS3_VAL, EMIFS_CCS(3));
osk_flash_resource.end = osk_flash_resource.start = omap_cs3_phys();
osk_flash_resource.end += SZ_32M - 1;
/*
* Add the GPIOs to be used as IRQs and immediately look them up
* to be passed as an IRQ resource. This is ugly but should work
* until the day we convert to device tree.
*/
gpiod_add_lookup_table(&osk_irq_gpio_table);
d = gpiod_get(NULL, "smc_irq", GPIOD_IN);
if (IS_ERR(d)) {
pr_err("Unable to get SMC IRQ GPIO descriptor\n");
} else {
irq_set_irq_type(gpiod_to_irq(d), IRQ_TYPE_EDGE_RISING);
osk5912_smc91x_resources[1] = DEFINE_RES_IRQ(gpiod_to_irq(d));
}
d = gpiod_get(NULL, "cf_irq", GPIOD_IN);
if (IS_ERR(d)) {
pr_err("Unable to get CF IRQ GPIO descriptor\n");
} else {
/* the CF I/O IRQ is really active-low */
irq_set_irq_type(gpiod_to_irq(d), IRQ_TYPE_EDGE_FALLING);
osk5912_cf_resources[0] = DEFINE_RES_IRQ(gpiod_to_irq(d));
}
platform_add_devices(osk5912_devices, ARRAY_SIZE(osk5912_devices));
l = omap_readl(USB_TRANSCEIVER_CTRL);
l |= (3 << 1);
omap_writel(l, USB_TRANSCEIVER_CTRL);
gpiod_add_lookup_table(&osk_usb_gpio_table);
omap1_usb_init(&osk_usb_config);
omap_serial_init();
/* irq for tps65010 chip */
/* bootloader effectively does: omap_cfg_reg(U19_1610_MPUIO1); */
d = gpiod_get(NULL, "tps65010", GPIOD_IN);
if (IS_ERR(d))
pr_err("Unable to get TPS65010 IRQ GPIO descriptor\n");
else
osk_i2c_board_info[0].irq = gpiod_to_irq(d);
omap_register_i2c_bus(1, 400, osk_i2c_board_info,
ARRAY_SIZE(osk_i2c_board_info));
}
MACHINE_START(OMAP_OSK, "TI-OSK")
/* Maintainer: Dirk Behme <[email protected]> */
.atag_offset = 0x100,
.map_io = omap1_map_io,
.init_early = omap1_init_early,
.init_irq = omap1_init_irq,
.init_machine = osk_init,
.init_late = omap1_init_late,
.init_time = omap1_timer_init,
.restart = omap1_restart,
MACHINE_END
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