2 * Hawkboard.org based on TI's OMAP-L138 Platform
4 * Initial code: Syed Mohammed Khasim
6 * Copyright (C) 2009 Texas Instruments Incorporated - http://www.ti.com
8 * This file is licensed under the terms of the GNU General Public License
9 * version 2. This program is licensed "as is" without any warranty of
10 * any kind, whether express or implied.
12 #include <linux/kernel.h>
13 #include <linux/init.h>
14 #include <linux/console.h>
15 #include <linux/interrupt.h>
16 #include <linux/gpio.h>
17 #include <linux/gpio/machine.h>
18 #include <linux/platform_data/gpio-davinci.h>
19 #include <linux/regulator/machine.h>
21 #include <asm/mach-types.h>
22 #include <asm/mach/arch.h>
24 #include <mach/common.h>
26 #include <mach/da8xx.h>
29 #define HAWKBOARD_PHY_ID "davinci_mdio-0:07"
31 #define DA850_USB1_VBUS_PIN GPIO_TO_PIN(2, 4)
32 #define DA850_USB1_OC_PIN GPIO_TO_PIN(6, 13)
34 static short omapl138_hawk_mii_pins
[] __initdata
= {
35 DA850_MII_TXEN
, DA850_MII_TXCLK
, DA850_MII_COL
, DA850_MII_TXD_3
,
36 DA850_MII_TXD_2
, DA850_MII_TXD_1
, DA850_MII_TXD_0
, DA850_MII_RXER
,
37 DA850_MII_CRS
, DA850_MII_RXCLK
, DA850_MII_RXDV
, DA850_MII_RXD_3
,
38 DA850_MII_RXD_2
, DA850_MII_RXD_1
, DA850_MII_RXD_0
, DA850_MDIO_CLK
,
43 static __init
void omapl138_hawk_config_emac(void)
45 void __iomem
*cfgchip3
= DA8XX_SYSCFG0_VIRT(DA8XX_CFGCHIP3_REG
);
48 struct davinci_soc_info
*soc_info
= &davinci_soc_info
;
50 val
= __raw_readl(cfgchip3
);
52 ret
= davinci_cfg_reg_list(omapl138_hawk_mii_pins
);
54 pr_warn("%s: CPGMAC/MII mux setup failed: %d\n", __func__
, ret
);
58 /* configure the CFGCHIP3 register for MII */
59 __raw_writel(val
, cfgchip3
);
60 pr_info("EMAC: MII PHY configured\n");
62 soc_info
->emac_pdata
->phy_id
= HAWKBOARD_PHY_ID
;
64 ret
= da8xx_register_emac();
66 pr_warn("%s: EMAC registration failed: %d\n", __func__
, ret
);
70 * The following EDMA channels/slots are not being used by drivers (for
71 * example: Timer, GPIO, UART events etc) on da850/omap-l138 EVM/Hawkboard,
72 * hence they are being reserved for codecs on the DSP side.
74 static const s16 da850_dma0_rsv_chans
[][2] = {
75 /* (offset, number) */
82 static const s16 da850_dma0_rsv_slots
[][2] = {
83 /* (offset, number) */
90 static const s16 da850_dma1_rsv_chans
[][2] = {
91 /* (offset, number) */
97 static const s16 da850_dma1_rsv_slots
[][2] = {
98 /* (offset, number) */
104 static struct edma_rsv_info da850_edma_cc0_rsv
= {
105 .rsv_chans
= da850_dma0_rsv_chans
,
106 .rsv_slots
= da850_dma0_rsv_slots
,
109 static struct edma_rsv_info da850_edma_cc1_rsv
= {
110 .rsv_chans
= da850_dma1_rsv_chans
,
111 .rsv_slots
= da850_dma1_rsv_slots
,
114 static struct edma_rsv_info
*da850_edma_rsv
[2] = {
119 static const short hawk_mmcsd0_pins
[] = {
120 DA850_MMCSD0_DAT_0
, DA850_MMCSD0_DAT_1
, DA850_MMCSD0_DAT_2
,
121 DA850_MMCSD0_DAT_3
, DA850_MMCSD0_CLK
, DA850_MMCSD0_CMD
,
122 DA850_GPIO3_12
, DA850_GPIO3_13
,
126 #define DA850_HAWK_MMCSD_CD_PIN GPIO_TO_PIN(3, 12)
127 #define DA850_HAWK_MMCSD_WP_PIN GPIO_TO_PIN(3, 13)
129 static struct gpiod_lookup_table mmc_gpios_table
= {
130 .dev_id
= "da830-mmc.0",
132 GPIO_LOOKUP("davinci_gpio.0", DA850_HAWK_MMCSD_CD_PIN
, "cd",
134 GPIO_LOOKUP("davinci_gpio.0", DA850_HAWK_MMCSD_WP_PIN
, "wp",
139 static struct davinci_mmc_config da850_mmc_config
= {
141 .max_freq
= 50000000,
142 .caps
= MMC_CAP_MMC_HIGHSPEED
| MMC_CAP_SD_HIGHSPEED
,
145 static __init
void omapl138_hawk_mmc_init(void)
149 ret
= davinci_cfg_reg_list(hawk_mmcsd0_pins
);
151 pr_warn("%s: MMC/SD0 mux setup failed: %d\n", __func__
, ret
);
155 gpiod_add_lookup_table(&mmc_gpios_table
);
157 ret
= da8xx_register_mmcsd0(&da850_mmc_config
);
159 pr_warn("%s: MMC/SD0 registration failed: %d\n", __func__
, ret
);
160 goto mmc_setup_mmcsd_fail
;
165 mmc_setup_mmcsd_fail
:
166 gpiod_remove_lookup_table(&mmc_gpios_table
);
169 static irqreturn_t
omapl138_hawk_usb_ocic_irq(int irq
, void *dev_id
);
170 static da8xx_ocic_handler_t hawk_usb_ocic_handler
;
172 static const short da850_hawk_usb11_pins
[] = {
173 DA850_GPIO2_4
, DA850_GPIO6_13
,
177 static int hawk_usb_set_power(unsigned port
, int on
)
179 gpio_set_value(DA850_USB1_VBUS_PIN
, on
);
183 static int hawk_usb_get_power(unsigned port
)
185 return gpio_get_value(DA850_USB1_VBUS_PIN
);
188 static int hawk_usb_get_oci(unsigned port
)
190 return !gpio_get_value(DA850_USB1_OC_PIN
);
193 static int hawk_usb_ocic_notify(da8xx_ocic_handler_t handler
)
195 int irq
= gpio_to_irq(DA850_USB1_OC_PIN
);
198 if (handler
!= NULL
) {
199 hawk_usb_ocic_handler
= handler
;
201 error
= request_irq(irq
, omapl138_hawk_usb_ocic_irq
,
202 IRQF_TRIGGER_RISING
|
203 IRQF_TRIGGER_FALLING
,
204 "OHCI over-current indicator", NULL
);
206 pr_err("%s: could not request IRQ to watch "
207 "over-current indicator changes\n", __func__
);
214 static struct da8xx_ohci_root_hub omapl138_hawk_usb11_pdata
= {
215 .set_power
= hawk_usb_set_power
,
216 .get_power
= hawk_usb_get_power
,
217 .get_oci
= hawk_usb_get_oci
,
218 .ocic_notify
= hawk_usb_ocic_notify
,
219 /* TPS2087 switch @ 5V */
220 .potpgt
= (3 + 1) / 2, /* 3 ms max */
223 static irqreturn_t
omapl138_hawk_usb_ocic_irq(int irq
, void *dev_id
)
225 hawk_usb_ocic_handler(&omapl138_hawk_usb11_pdata
, 1);
229 static __init
void omapl138_hawk_usb_init(void)
233 ret
= davinci_cfg_reg_list(da850_hawk_usb11_pins
);
235 pr_warn("%s: USB 1.1 PinMux setup failed: %d\n", __func__
, ret
);
239 ret
= da8xx_register_usb20_phy_clk(false);
241 pr_warn("%s: USB 2.0 PHY CLK registration failed: %d\n",
244 ret
= da8xx_register_usb11_phy_clk(false);
246 pr_warn("%s: USB 1.1 PHY CLK registration failed: %d\n",
249 ret
= da8xx_register_usb_phy();
251 pr_warn("%s: USB PHY registration failed: %d\n",
254 ret
= gpio_request_one(DA850_USB1_VBUS_PIN
,
255 GPIOF_DIR_OUT
, "USB1 VBUS");
257 pr_err("%s: failed to request GPIO for USB 1.1 port "
258 "power control: %d\n", __func__
, ret
);
262 ret
= gpio_request_one(DA850_USB1_OC_PIN
,
263 GPIOF_DIR_IN
, "USB1 OC");
265 pr_err("%s: failed to request GPIO for USB 1.1 port "
266 "over-current indicator: %d\n", __func__
, ret
);
267 goto usb11_setup_oc_fail
;
270 ret
= da8xx_register_usb11(&omapl138_hawk_usb11_pdata
);
272 pr_warn("%s: USB 1.1 registration failed: %d\n", __func__
, ret
);
273 goto usb11_setup_fail
;
279 gpio_free(DA850_USB1_OC_PIN
);
281 gpio_free(DA850_USB1_VBUS_PIN
);
284 static __init
void omapl138_hawk_init(void)
288 ret
= da8xx_register_cfgchip();
290 pr_warn("%s: CFGCHIP registration failed: %d\n", __func__
, ret
);
292 ret
= da850_register_gpio();
294 pr_warn("%s: GPIO init failed: %d\n", __func__
, ret
);
296 davinci_serial_init(da8xx_serial_device
);
298 omapl138_hawk_config_emac();
300 ret
= da850_register_edma(da850_edma_rsv
);
302 pr_warn("%s: EDMA registration failed: %d\n", __func__
, ret
);
304 omapl138_hawk_mmc_init();
306 omapl138_hawk_usb_init();
308 ret
= da8xx_register_watchdog();
310 pr_warn("%s: watchdog registration failed: %d\n",
313 ret
= da8xx_register_rproc();
315 pr_warn("%s: dsp/rproc registration failed: %d\n",
318 regulator_has_full_constraints();
321 #ifdef CONFIG_SERIAL_8250_CONSOLE
322 static int __init
omapl138_hawk_console_init(void)
324 if (!machine_is_omapl138_hawkboard())
327 return add_preferred_console("ttyS", 2, "115200");
329 console_initcall(omapl138_hawk_console_init
);
332 static void __init
omapl138_hawk_map_io(void)
337 MACHINE_START(OMAPL138_HAWKBOARD
, "AM18x/OMAP-L138 Hawkboard")
338 .atag_offset
= 0x100,
339 .map_io
= omapl138_hawk_map_io
,
340 .init_irq
= cp_intc_init
,
341 .init_time
= davinci_timer_init
,
342 .init_machine
= omapl138_hawk_init
,
343 .init_late
= davinci_init_late
,
344 .dma_zone_size
= SZ_128M
,
345 .restart
= da8xx_restart
,
346 .reserve
= da8xx_rproc_reserve_cma
,