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/gpio.h>
17 #include <asm/mach-types.h>
18 #include <asm/mach/arch.h>
20 #include <mach/cp_intc.h>
21 #include <mach/da8xx.h>
24 #define HAWKBOARD_PHY_ID "davinci_mdio-0:07"
25 #define DA850_HAWK_MMCSD_CD_PIN GPIO_TO_PIN(3, 12)
26 #define DA850_HAWK_MMCSD_WP_PIN GPIO_TO_PIN(3, 13)
28 #define DA850_USB1_VBUS_PIN GPIO_TO_PIN(2, 4)
29 #define DA850_USB1_OC_PIN GPIO_TO_PIN(6, 13)
31 static short omapl138_hawk_mii_pins
[] __initdata
= {
32 DA850_MII_TXEN
, DA850_MII_TXCLK
, DA850_MII_COL
, DA850_MII_TXD_3
,
33 DA850_MII_TXD_2
, DA850_MII_TXD_1
, DA850_MII_TXD_0
, DA850_MII_RXER
,
34 DA850_MII_CRS
, DA850_MII_RXCLK
, DA850_MII_RXDV
, DA850_MII_RXD_3
,
35 DA850_MII_RXD_2
, DA850_MII_RXD_1
, DA850_MII_RXD_0
, DA850_MDIO_CLK
,
40 static __init
void omapl138_hawk_config_emac(void)
42 void __iomem
*cfgchip3
= DA8XX_SYSCFG0_VIRT(DA8XX_CFGCHIP3_REG
);
45 struct davinci_soc_info
*soc_info
= &davinci_soc_info
;
47 val
= __raw_readl(cfgchip3
);
49 ret
= davinci_cfg_reg_list(omapl138_hawk_mii_pins
);
51 pr_warning("%s: cpgmac/mii mux setup failed: %d\n",
56 /* configure the CFGCHIP3 register for MII */
57 __raw_writel(val
, cfgchip3
);
58 pr_info("EMAC: MII PHY configured\n");
60 soc_info
->emac_pdata
->phy_id
= HAWKBOARD_PHY_ID
;
62 ret
= da8xx_register_emac();
64 pr_warning("%s: emac registration failed: %d\n",
69 * The following EDMA channels/slots are not being used by drivers (for
70 * example: Timer, GPIO, UART events etc) on da850/omap-l138 EVM/Hawkboard,
71 * hence they are being reserved for codecs on the DSP side.
73 static const s16 da850_dma0_rsv_chans
[][2] = {
74 /* (offset, number) */
81 static const s16 da850_dma0_rsv_slots
[][2] = {
82 /* (offset, number) */
89 static const s16 da850_dma1_rsv_chans
[][2] = {
90 /* (offset, number) */
96 static const s16 da850_dma1_rsv_slots
[][2] = {
97 /* (offset, number) */
103 static struct edma_rsv_info da850_edma_cc0_rsv
= {
104 .rsv_chans
= da850_dma0_rsv_chans
,
105 .rsv_slots
= da850_dma0_rsv_slots
,
108 static struct edma_rsv_info da850_edma_cc1_rsv
= {
109 .rsv_chans
= da850_dma1_rsv_chans
,
110 .rsv_slots
= da850_dma1_rsv_slots
,
113 static struct edma_rsv_info
*da850_edma_rsv
[2] = {
118 static const short hawk_mmcsd0_pins
[] = {
119 DA850_MMCSD0_DAT_0
, DA850_MMCSD0_DAT_1
, DA850_MMCSD0_DAT_2
,
120 DA850_MMCSD0_DAT_3
, DA850_MMCSD0_CLK
, DA850_MMCSD0_CMD
,
121 DA850_GPIO3_12
, DA850_GPIO3_13
,
125 static int da850_hawk_mmc_get_ro(int index
)
127 return gpio_get_value(DA850_HAWK_MMCSD_WP_PIN
);
130 static int da850_hawk_mmc_get_cd(int index
)
132 return !gpio_get_value(DA850_HAWK_MMCSD_CD_PIN
);
135 static struct davinci_mmc_config da850_mmc_config
= {
136 .get_ro
= da850_hawk_mmc_get_ro
,
137 .get_cd
= da850_hawk_mmc_get_cd
,
139 .max_freq
= 50000000,
140 .caps
= MMC_CAP_MMC_HIGHSPEED
| MMC_CAP_SD_HIGHSPEED
,
141 .version
= MMC_CTLR_VERSION_2
,
144 static __init
void omapl138_hawk_mmc_init(void)
148 ret
= davinci_cfg_reg_list(hawk_mmcsd0_pins
);
150 pr_warning("%s: MMC/SD0 mux setup failed: %d\n",
155 ret
= gpio_request_one(DA850_HAWK_MMCSD_CD_PIN
,
156 GPIOF_DIR_IN
, "MMC CD");
158 pr_warning("%s: can not open GPIO %d\n",
159 __func__
, DA850_HAWK_MMCSD_CD_PIN
);
163 ret
= gpio_request_one(DA850_HAWK_MMCSD_WP_PIN
,
164 GPIOF_DIR_IN
, "MMC WP");
166 pr_warning("%s: can not open GPIO %d\n",
167 __func__
, DA850_HAWK_MMCSD_WP_PIN
);
168 goto mmc_setup_wp_fail
;
171 ret
= da8xx_register_mmcsd0(&da850_mmc_config
);
173 pr_warning("%s: MMC/SD0 registration failed: %d\n",
175 goto mmc_setup_mmcsd_fail
;
180 mmc_setup_mmcsd_fail
:
181 gpio_free(DA850_HAWK_MMCSD_WP_PIN
);
183 gpio_free(DA850_HAWK_MMCSD_CD_PIN
);
186 static irqreturn_t
omapl138_hawk_usb_ocic_irq(int irq
, void *dev_id
);
187 static da8xx_ocic_handler_t hawk_usb_ocic_handler
;
189 static const short da850_hawk_usb11_pins
[] = {
190 DA850_GPIO2_4
, DA850_GPIO6_13
,
194 static int hawk_usb_set_power(unsigned port
, int on
)
196 gpio_set_value(DA850_USB1_VBUS_PIN
, on
);
200 static int hawk_usb_get_power(unsigned port
)
202 return gpio_get_value(DA850_USB1_VBUS_PIN
);
205 static int hawk_usb_get_oci(unsigned port
)
207 return !gpio_get_value(DA850_USB1_OC_PIN
);
210 static int hawk_usb_ocic_notify(da8xx_ocic_handler_t handler
)
212 int irq
= gpio_to_irq(DA850_USB1_OC_PIN
);
215 if (handler
!= NULL
) {
216 hawk_usb_ocic_handler
= handler
;
218 error
= request_irq(irq
, omapl138_hawk_usb_ocic_irq
,
219 IRQF_DISABLED
| IRQF_TRIGGER_RISING
|
220 IRQF_TRIGGER_FALLING
,
221 "OHCI over-current indicator", NULL
);
223 pr_err("%s: could not request IRQ to watch "
224 "over-current indicator changes\n", __func__
);
231 static struct da8xx_ohci_root_hub omapl138_hawk_usb11_pdata
= {
232 .set_power
= hawk_usb_set_power
,
233 .get_power
= hawk_usb_get_power
,
234 .get_oci
= hawk_usb_get_oci
,
235 .ocic_notify
= hawk_usb_ocic_notify
,
236 /* TPS2087 switch @ 5V */
237 .potpgt
= (3 + 1) / 2, /* 3 ms max */
240 static irqreturn_t
omapl138_hawk_usb_ocic_irq(int irq
, void *dev_id
)
242 hawk_usb_ocic_handler(&omapl138_hawk_usb11_pdata
, 1);
246 static __init
void omapl138_hawk_usb_init(void)
251 ret
= davinci_cfg_reg_list(da850_hawk_usb11_pins
);
253 pr_warning("%s: USB 1.1 PinMux setup failed: %d\n",
258 /* Setup the Ref. clock frequency for the HAWK at 24 MHz. */
260 cfgchip2
= __raw_readl(DA8XX_SYSCFG0_VIRT(DA8XX_CFGCHIP2_REG
));
261 cfgchip2
&= ~CFGCHIP2_REFFREQ
;
262 cfgchip2
|= CFGCHIP2_REFFREQ_24MHZ
;
263 __raw_writel(cfgchip2
, DA8XX_SYSCFG0_VIRT(DA8XX_CFGCHIP2_REG
));
265 ret
= gpio_request_one(DA850_USB1_VBUS_PIN
,
266 GPIOF_DIR_OUT
, "USB1 VBUS");
268 pr_err("%s: failed to request GPIO for USB 1.1 port "
269 "power control: %d\n", __func__
, ret
);
273 ret
= gpio_request_one(DA850_USB1_OC_PIN
,
274 GPIOF_DIR_IN
, "USB1 OC");
276 pr_err("%s: failed to request GPIO for USB 1.1 port "
277 "over-current indicator: %d\n", __func__
, ret
);
278 goto usb11_setup_oc_fail
;
281 ret
= da8xx_register_usb11(&omapl138_hawk_usb11_pdata
);
283 pr_warning("%s: USB 1.1 registration failed: %d\n",
285 goto usb11_setup_fail
;
291 gpio_free(DA850_USB1_OC_PIN
);
293 gpio_free(DA850_USB1_VBUS_PIN
);
296 static struct davinci_uart_config omapl138_hawk_uart_config __initdata
= {
297 .enabled_uarts
= 0x7,
300 static __init
void omapl138_hawk_init(void)
304 davinci_serial_init(&omapl138_hawk_uart_config
);
306 omapl138_hawk_config_emac();
308 ret
= da850_register_edma(da850_edma_rsv
);
310 pr_warning("%s: EDMA registration failed: %d\n",
313 omapl138_hawk_mmc_init();
315 omapl138_hawk_usb_init();
317 ret
= da8xx_register_watchdog();
319 pr_warning("omapl138_hawk_init: "
320 "watchdog registration failed: %d\n",
324 #ifdef CONFIG_SERIAL_8250_CONSOLE
325 static int __init
omapl138_hawk_console_init(void)
327 if (!machine_is_omapl138_hawkboard())
330 return add_preferred_console("ttyS", 2, "115200");
332 console_initcall(omapl138_hawk_console_init
);
335 static void __init
omapl138_hawk_map_io(void)
340 MACHINE_START(OMAPL138_HAWKBOARD
, "AM18x/OMAP-L138 Hawkboard")
341 .atag_offset
= 0x100,
342 .map_io
= omapl138_hawk_map_io
,
343 .init_irq
= cp_intc_init
,
344 .timer
= &davinci_timer
,
345 .init_machine
= omapl138_hawk_init
,
346 .init_late
= davinci_init_late
,
347 .dma_zone_size
= SZ_128M
,
348 .restart
= da8xx_restart
,