mirror of
https://github.com/torvalds/linux.git
synced 2024-11-27 06:31:52 +00:00
348 lines
8.1 KiB
C
348 lines
8.1 KiB
C
/*
|
|
* Hawkboard.org based on TI's OMAP-L138 Platform
|
|
*
|
|
* Initial code: Syed Mohammed Khasim
|
|
*
|
|
* Copyright (C) 2009 Texas Instruments Incorporated - http://www.ti.com
|
|
*
|
|
* This file is licensed under the terms of the GNU General Public License
|
|
* version 2. This program is licensed "as is" without any warranty of
|
|
* any kind, whether express or implied.
|
|
*/
|
|
#include <linux/kernel.h>
|
|
#include <linux/init.h>
|
|
#include <linux/console.h>
|
|
#include <linux/gpio.h>
|
|
|
|
#include <asm/mach-types.h>
|
|
#include <asm/mach/arch.h>
|
|
|
|
#include <mach/cp_intc.h>
|
|
#include <mach/da8xx.h>
|
|
#include <mach/mux.h>
|
|
|
|
#define HAWKBOARD_PHY_ID "0:07"
|
|
#define DA850_HAWK_MMCSD_CD_PIN GPIO_TO_PIN(3, 12)
|
|
#define DA850_HAWK_MMCSD_WP_PIN GPIO_TO_PIN(3, 13)
|
|
|
|
#define DA850_USB1_VBUS_PIN GPIO_TO_PIN(2, 4)
|
|
#define DA850_USB1_OC_PIN GPIO_TO_PIN(6, 13)
|
|
|
|
static short omapl138_hawk_mii_pins[] __initdata = {
|
|
DA850_MII_TXEN, DA850_MII_TXCLK, DA850_MII_COL, DA850_MII_TXD_3,
|
|
DA850_MII_TXD_2, DA850_MII_TXD_1, DA850_MII_TXD_0, DA850_MII_RXER,
|
|
DA850_MII_CRS, DA850_MII_RXCLK, DA850_MII_RXDV, DA850_MII_RXD_3,
|
|
DA850_MII_RXD_2, DA850_MII_RXD_1, DA850_MII_RXD_0, DA850_MDIO_CLK,
|
|
DA850_MDIO_D,
|
|
-1
|
|
};
|
|
|
|
static __init void omapl138_hawk_config_emac(void)
|
|
{
|
|
void __iomem *cfgchip3 = DA8XX_SYSCFG0_VIRT(DA8XX_CFGCHIP3_REG);
|
|
int ret;
|
|
u32 val;
|
|
struct davinci_soc_info *soc_info = &davinci_soc_info;
|
|
|
|
val = __raw_readl(cfgchip3);
|
|
val &= ~BIT(8);
|
|
ret = davinci_cfg_reg_list(omapl138_hawk_mii_pins);
|
|
if (ret) {
|
|
pr_warning("%s: cpgmac/mii mux setup failed: %d\n",
|
|
__func__, ret);
|
|
return;
|
|
}
|
|
|
|
/* configure the CFGCHIP3 register for MII */
|
|
__raw_writel(val, cfgchip3);
|
|
pr_info("EMAC: MII PHY configured\n");
|
|
|
|
soc_info->emac_pdata->phy_id = HAWKBOARD_PHY_ID;
|
|
|
|
ret = da8xx_register_emac();
|
|
if (ret)
|
|
pr_warning("%s: emac registration failed: %d\n",
|
|
__func__, ret);
|
|
}
|
|
|
|
/*
|
|
* The following EDMA channels/slots are not being used by drivers (for
|
|
* example: Timer, GPIO, UART events etc) on da850/omap-l138 EVM/Hawkboard,
|
|
* hence they are being reserved for codecs on the DSP side.
|
|
*/
|
|
static const s16 da850_dma0_rsv_chans[][2] = {
|
|
/* (offset, number) */
|
|
{ 8, 6},
|
|
{24, 4},
|
|
{30, 2},
|
|
{-1, -1}
|
|
};
|
|
|
|
static const s16 da850_dma0_rsv_slots[][2] = {
|
|
/* (offset, number) */
|
|
{ 8, 6},
|
|
{24, 4},
|
|
{30, 50},
|
|
{-1, -1}
|
|
};
|
|
|
|
static const s16 da850_dma1_rsv_chans[][2] = {
|
|
/* (offset, number) */
|
|
{ 0, 28},
|
|
{30, 2},
|
|
{-1, -1}
|
|
};
|
|
|
|
static const s16 da850_dma1_rsv_slots[][2] = {
|
|
/* (offset, number) */
|
|
{ 0, 28},
|
|
{30, 90},
|
|
{-1, -1}
|
|
};
|
|
|
|
static struct edma_rsv_info da850_edma_cc0_rsv = {
|
|
.rsv_chans = da850_dma0_rsv_chans,
|
|
.rsv_slots = da850_dma0_rsv_slots,
|
|
};
|
|
|
|
static struct edma_rsv_info da850_edma_cc1_rsv = {
|
|
.rsv_chans = da850_dma1_rsv_chans,
|
|
.rsv_slots = da850_dma1_rsv_slots,
|
|
};
|
|
|
|
static struct edma_rsv_info *da850_edma_rsv[2] = {
|
|
&da850_edma_cc0_rsv,
|
|
&da850_edma_cc1_rsv,
|
|
};
|
|
|
|
static const short hawk_mmcsd0_pins[] = {
|
|
DA850_MMCSD0_DAT_0, DA850_MMCSD0_DAT_1, DA850_MMCSD0_DAT_2,
|
|
DA850_MMCSD0_DAT_3, DA850_MMCSD0_CLK, DA850_MMCSD0_CMD,
|
|
DA850_GPIO3_12, DA850_GPIO3_13,
|
|
-1
|
|
};
|
|
|
|
static int da850_hawk_mmc_get_ro(int index)
|
|
{
|
|
return gpio_get_value(DA850_HAWK_MMCSD_WP_PIN);
|
|
}
|
|
|
|
static int da850_hawk_mmc_get_cd(int index)
|
|
{
|
|
return !gpio_get_value(DA850_HAWK_MMCSD_CD_PIN);
|
|
}
|
|
|
|
static struct davinci_mmc_config da850_mmc_config = {
|
|
.get_ro = da850_hawk_mmc_get_ro,
|
|
.get_cd = da850_hawk_mmc_get_cd,
|
|
.wires = 4,
|
|
.max_freq = 50000000,
|
|
.caps = MMC_CAP_MMC_HIGHSPEED | MMC_CAP_SD_HIGHSPEED,
|
|
.version = MMC_CTLR_VERSION_2,
|
|
};
|
|
|
|
static __init void omapl138_hawk_mmc_init(void)
|
|
{
|
|
int ret;
|
|
|
|
ret = davinci_cfg_reg_list(hawk_mmcsd0_pins);
|
|
if (ret) {
|
|
pr_warning("%s: MMC/SD0 mux setup failed: %d\n",
|
|
__func__, ret);
|
|
return;
|
|
}
|
|
|
|
ret = gpio_request_one(DA850_HAWK_MMCSD_CD_PIN,
|
|
GPIOF_DIR_IN, "MMC CD");
|
|
if (ret < 0) {
|
|
pr_warning("%s: can not open GPIO %d\n",
|
|
__func__, DA850_HAWK_MMCSD_CD_PIN);
|
|
return;
|
|
}
|
|
|
|
ret = gpio_request_one(DA850_HAWK_MMCSD_WP_PIN,
|
|
GPIOF_DIR_IN, "MMC WP");
|
|
if (ret < 0) {
|
|
pr_warning("%s: can not open GPIO %d\n",
|
|
__func__, DA850_HAWK_MMCSD_WP_PIN);
|
|
goto mmc_setup_wp_fail;
|
|
}
|
|
|
|
ret = da8xx_register_mmcsd0(&da850_mmc_config);
|
|
if (ret) {
|
|
pr_warning("%s: MMC/SD0 registration failed: %d\n",
|
|
__func__, ret);
|
|
goto mmc_setup_mmcsd_fail;
|
|
}
|
|
|
|
return;
|
|
|
|
mmc_setup_mmcsd_fail:
|
|
gpio_free(DA850_HAWK_MMCSD_WP_PIN);
|
|
mmc_setup_wp_fail:
|
|
gpio_free(DA850_HAWK_MMCSD_CD_PIN);
|
|
}
|
|
|
|
static irqreturn_t omapl138_hawk_usb_ocic_irq(int irq, void *dev_id);
|
|
static da8xx_ocic_handler_t hawk_usb_ocic_handler;
|
|
|
|
static const short da850_hawk_usb11_pins[] = {
|
|
DA850_GPIO2_4, DA850_GPIO6_13,
|
|
-1
|
|
};
|
|
|
|
static int hawk_usb_set_power(unsigned port, int on)
|
|
{
|
|
gpio_set_value(DA850_USB1_VBUS_PIN, on);
|
|
return 0;
|
|
}
|
|
|
|
static int hawk_usb_get_power(unsigned port)
|
|
{
|
|
return gpio_get_value(DA850_USB1_VBUS_PIN);
|
|
}
|
|
|
|
static int hawk_usb_get_oci(unsigned port)
|
|
{
|
|
return !gpio_get_value(DA850_USB1_OC_PIN);
|
|
}
|
|
|
|
static int hawk_usb_ocic_notify(da8xx_ocic_handler_t handler)
|
|
{
|
|
int irq = gpio_to_irq(DA850_USB1_OC_PIN);
|
|
int error = 0;
|
|
|
|
if (handler != NULL) {
|
|
hawk_usb_ocic_handler = handler;
|
|
|
|
error = request_irq(irq, omapl138_hawk_usb_ocic_irq,
|
|
IRQF_DISABLED | IRQF_TRIGGER_RISING |
|
|
IRQF_TRIGGER_FALLING,
|
|
"OHCI over-current indicator", NULL);
|
|
if (error)
|
|
pr_err("%s: could not request IRQ to watch "
|
|
"over-current indicator changes\n", __func__);
|
|
} else {
|
|
free_irq(irq, NULL);
|
|
}
|
|
return error;
|
|
}
|
|
|
|
static struct da8xx_ohci_root_hub omapl138_hawk_usb11_pdata = {
|
|
.set_power = hawk_usb_set_power,
|
|
.get_power = hawk_usb_get_power,
|
|
.get_oci = hawk_usb_get_oci,
|
|
.ocic_notify = hawk_usb_ocic_notify,
|
|
/* TPS2087 switch @ 5V */
|
|
.potpgt = (3 + 1) / 2, /* 3 ms max */
|
|
};
|
|
|
|
static irqreturn_t omapl138_hawk_usb_ocic_irq(int irq, void *dev_id)
|
|
{
|
|
hawk_usb_ocic_handler(&omapl138_hawk_usb11_pdata, 1);
|
|
return IRQ_HANDLED;
|
|
}
|
|
|
|
static __init void omapl138_hawk_usb_init(void)
|
|
{
|
|
int ret;
|
|
u32 cfgchip2;
|
|
|
|
ret = davinci_cfg_reg_list(da850_hawk_usb11_pins);
|
|
if (ret) {
|
|
pr_warning("%s: USB 1.1 PinMux setup failed: %d\n",
|
|
__func__, ret);
|
|
return;
|
|
}
|
|
|
|
/* Setup the Ref. clock frequency for the HAWK at 24 MHz. */
|
|
|
|
cfgchip2 = __raw_readl(DA8XX_SYSCFG0_VIRT(DA8XX_CFGCHIP2_REG));
|
|
cfgchip2 &= ~CFGCHIP2_REFFREQ;
|
|
cfgchip2 |= CFGCHIP2_REFFREQ_24MHZ;
|
|
__raw_writel(cfgchip2, DA8XX_SYSCFG0_VIRT(DA8XX_CFGCHIP2_REG));
|
|
|
|
ret = gpio_request_one(DA850_USB1_VBUS_PIN,
|
|
GPIOF_DIR_OUT, "USB1 VBUS");
|
|
if (ret < 0) {
|
|
pr_err("%s: failed to request GPIO for USB 1.1 port "
|
|
"power control: %d\n", __func__, ret);
|
|
return;
|
|
}
|
|
|
|
ret = gpio_request_one(DA850_USB1_OC_PIN,
|
|
GPIOF_DIR_IN, "USB1 OC");
|
|
if (ret < 0) {
|
|
pr_err("%s: failed to request GPIO for USB 1.1 port "
|
|
"over-current indicator: %d\n", __func__, ret);
|
|
goto usb11_setup_oc_fail;
|
|
}
|
|
|
|
ret = da8xx_register_usb11(&omapl138_hawk_usb11_pdata);
|
|
if (ret) {
|
|
pr_warning("%s: USB 1.1 registration failed: %d\n",
|
|
__func__, ret);
|
|
goto usb11_setup_fail;
|
|
}
|
|
|
|
return;
|
|
|
|
usb11_setup_fail:
|
|
gpio_free(DA850_USB1_OC_PIN);
|
|
usb11_setup_oc_fail:
|
|
gpio_free(DA850_USB1_VBUS_PIN);
|
|
}
|
|
|
|
static struct davinci_uart_config omapl138_hawk_uart_config __initdata = {
|
|
.enabled_uarts = 0x7,
|
|
};
|
|
|
|
static __init void omapl138_hawk_init(void)
|
|
{
|
|
int ret;
|
|
|
|
davinci_serial_init(&omapl138_hawk_uart_config);
|
|
|
|
omapl138_hawk_config_emac();
|
|
|
|
ret = da850_register_edma(da850_edma_rsv);
|
|
if (ret)
|
|
pr_warning("%s: EDMA registration failed: %d\n",
|
|
__func__, ret);
|
|
|
|
omapl138_hawk_mmc_init();
|
|
|
|
omapl138_hawk_usb_init();
|
|
|
|
ret = da8xx_register_watchdog();
|
|
if (ret)
|
|
pr_warning("omapl138_hawk_init: "
|
|
"watchdog registration failed: %d\n",
|
|
ret);
|
|
}
|
|
|
|
#ifdef CONFIG_SERIAL_8250_CONSOLE
|
|
static int __init omapl138_hawk_console_init(void)
|
|
{
|
|
if (!machine_is_omapl138_hawkboard())
|
|
return 0;
|
|
|
|
return add_preferred_console("ttyS", 2, "115200");
|
|
}
|
|
console_initcall(omapl138_hawk_console_init);
|
|
#endif
|
|
|
|
static void __init omapl138_hawk_map_io(void)
|
|
{
|
|
da850_init();
|
|
}
|
|
|
|
MACHINE_START(OMAPL138_HAWKBOARD, "AM18x/OMAP-L138 Hawkboard")
|
|
.boot_params = (DA8XX_DDR_BASE + 0x100),
|
|
.map_io = omapl138_hawk_map_io,
|
|
.init_irq = cp_intc_init,
|
|
.timer = &davinci_timer,
|
|
.init_machine = omapl138_hawk_init,
|
|
.dma_zone_size = SZ_128M,
|
|
MACHINE_END
|