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TOMOYO Linux Cross Reference
Linux/arch/arm/mach-omap2/board-am3517evm.c

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  1 /*
  2  * linux/arch/arm/mach-omap2/board-am3517evm.c
  3  *
  4  * Copyright (C) 2009 Texas Instruments Incorporated
  5  * Author: Ranjith Lohithakshan <ranjithl@ti.com>
  6  *
  7  * Based on mach-omap2/board-omap3evm.c
  8  *
  9  * This program is free software; you can redistribute it and/or modify it
 10  * under the terms of the GNU General Public License as  published by the
 11  * Free Software Foundation version 2.
 12  *
 13  * This program is distributed "as is" WITHOUT ANY WARRANTY of any kind,
 14  * whether express or implied; without even the implied warranty of
 15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 16  * General Public License for more details.
 17  */
 18 
 19 #include <linux/kernel.h>
 20 #include <linux/init.h>
 21 #include <linux/clk.h>
 22 #include <linux/platform_device.h>
 23 #include <linux/gpio.h>
 24 #include <linux/i2c/pca953x.h>
 25 #include <linux/can/platform/ti_hecc.h>
 26 #include <linux/davinci_emac.h>
 27 
 28 #include <mach/hardware.h>
 29 #include <mach/am35xx.h>
 30 #include <asm/mach-types.h>
 31 #include <asm/mach/arch.h>
 32 #include <asm/mach/map.h>
 33 
 34 #include <plat/board.h>
 35 #include <plat/common.h>
 36 #include <plat/usb.h>
 37 #include <video/omapdss.h>
 38 #include <video/omap-panel-generic-dpi.h>
 39 #include <video/omap-panel-dvi.h>
 40 
 41 #include "mux.h"
 42 #include "control.h"
 43 
 44 #define AM35XX_EVM_MDIO_FREQUENCY       (1000000)
 45 
 46 static struct mdio_platform_data am3517_evm_mdio_pdata = {
 47         .bus_freq       = AM35XX_EVM_MDIO_FREQUENCY,
 48 };
 49 
 50 static struct resource am3517_mdio_resources[] = {
 51         {
 52                 .start  = AM35XX_IPSS_EMAC_BASE + AM35XX_EMAC_MDIO_OFFSET,
 53                 .end    = AM35XX_IPSS_EMAC_BASE + AM35XX_EMAC_MDIO_OFFSET +
 54                           SZ_4K - 1,
 55                 .flags  = IORESOURCE_MEM,
 56         },
 57 };
 58 
 59 static struct platform_device am3517_mdio_device = {
 60         .name           = "davinci_mdio",
 61         .id             = 0,
 62         .num_resources  = ARRAY_SIZE(am3517_mdio_resources),
 63         .resource       = am3517_mdio_resources,
 64         .dev.platform_data = &am3517_evm_mdio_pdata,
 65 };
 66 
 67 static struct emac_platform_data am3517_evm_emac_pdata = {
 68         .rmii_en        = 1,
 69 };
 70 
 71 static struct resource am3517_emac_resources[] = {
 72         {
 73                 .start  = AM35XX_IPSS_EMAC_BASE,
 74                 .end    = AM35XX_IPSS_EMAC_BASE + 0x2FFFF,
 75                 .flags  = IORESOURCE_MEM,
 76         },
 77         {
 78                 .start  = INT_35XX_EMAC_C0_RXTHRESH_IRQ,
 79                 .end    = INT_35XX_EMAC_C0_RXTHRESH_IRQ,
 80                 .flags  = IORESOURCE_IRQ,
 81         },
 82         {
 83                 .start  = INT_35XX_EMAC_C0_RX_PULSE_IRQ,
 84                 .end    = INT_35XX_EMAC_C0_RX_PULSE_IRQ,
 85                 .flags  = IORESOURCE_IRQ,
 86         },
 87         {
 88                 .start  = INT_35XX_EMAC_C0_TX_PULSE_IRQ,
 89                 .end    = INT_35XX_EMAC_C0_TX_PULSE_IRQ,
 90                 .flags  = IORESOURCE_IRQ,
 91         },
 92         {
 93                 .start  = INT_35XX_EMAC_C0_MISC_PULSE_IRQ,
 94                 .end    = INT_35XX_EMAC_C0_MISC_PULSE_IRQ,
 95                 .flags  = IORESOURCE_IRQ,
 96         },
 97 };
 98 
 99 static struct platform_device am3517_emac_device = {
100         .name           = "davinci_emac",
101         .id             = -1,
102         .num_resources  = ARRAY_SIZE(am3517_emac_resources),
103         .resource       = am3517_emac_resources,
104 };
105 
106 static void am3517_enable_ethernet_int(void)
107 {
108         u32 regval;
109 
110         regval = omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR);
111         regval = (regval | AM35XX_CPGMAC_C0_RX_PULSE_CLR |
112                 AM35XX_CPGMAC_C0_TX_PULSE_CLR |
113                 AM35XX_CPGMAC_C0_MISC_PULSE_CLR |
114                 AM35XX_CPGMAC_C0_RX_THRESH_CLR);
115         omap_ctrl_writel(regval, AM35XX_CONTROL_LVL_INTR_CLEAR);
116         regval = omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR);
117 }
118 
119 static void am3517_disable_ethernet_int(void)
120 {
121         u32 regval;
122 
123         regval = omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR);
124         regval = (regval | AM35XX_CPGMAC_C0_RX_PULSE_CLR |
125                 AM35XX_CPGMAC_C0_TX_PULSE_CLR);
126         omap_ctrl_writel(regval, AM35XX_CONTROL_LVL_INTR_CLEAR);
127         regval = omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR);
128 }
129 
130 static void am3517_evm_ethernet_init(struct emac_platform_data *pdata)
131 {
132         unsigned int regval;
133 
134         pdata->ctrl_reg_offset          = AM35XX_EMAC_CNTRL_OFFSET;
135         pdata->ctrl_mod_reg_offset      = AM35XX_EMAC_CNTRL_MOD_OFFSET;
136         pdata->ctrl_ram_offset          = AM35XX_EMAC_CNTRL_RAM_OFFSET;
137         pdata->ctrl_ram_size            = AM35XX_EMAC_CNTRL_RAM_SIZE;
138         pdata->version                  = EMAC_VERSION_2;
139         pdata->hw_ram_addr              = AM35XX_EMAC_HW_RAM_ADDR;
140         pdata->interrupt_enable         = am3517_enable_ethernet_int;
141         pdata->interrupt_disable        = am3517_disable_ethernet_int;
142         am3517_emac_device.dev.platform_data    = pdata;
143         platform_device_register(&am3517_emac_device);
144         platform_device_register(&am3517_mdio_device);
145         clk_add_alias(NULL, dev_name(&am3517_mdio_device.dev),
146                       NULL, &am3517_emac_device.dev);
147 
148         regval = omap_ctrl_readl(AM35XX_CONTROL_IP_SW_RESET);
149         regval = regval & (~(AM35XX_CPGMACSS_SW_RST));
150         omap_ctrl_writel(regval, AM35XX_CONTROL_IP_SW_RESET);
151         regval = omap_ctrl_readl(AM35XX_CONTROL_IP_SW_RESET);
152 
153         return ;
154 }
155 
156 
157 
158 #define LCD_PANEL_PWR           176
159 #define LCD_PANEL_BKLIGHT_PWR   182
160 #define LCD_PANEL_PWM           181
161 
162 static struct i2c_board_info __initdata am3517evm_i2c1_boardinfo[] = {
163         {
164                 I2C_BOARD_INFO("s35390a", 0x30),
165         },
166 };
167 
168 /*
169  * RTC - S35390A
170  */
171 #define GPIO_RTCS35390A_IRQ     55
172 
173 static void __init am3517_evm_rtc_init(void)
174 {
175         int r;
176 
177         omap_mux_init_gpio(GPIO_RTCS35390A_IRQ, OMAP_PIN_INPUT_PULLUP);
178 
179         r = gpio_request_one(GPIO_RTCS35390A_IRQ, GPIOF_IN, "rtcs35390a-irq");
180         if (r < 0) {
181                 printk(KERN_WARNING "failed to request GPIO#%d\n",
182                                 GPIO_RTCS35390A_IRQ);
183                 return;
184         }
185 
186         am3517evm_i2c1_boardinfo[0].irq = gpio_to_irq(GPIO_RTCS35390A_IRQ);
187 }
188 
189 /*
190  * I2C GPIO Expander - TCA6416
191  */
192 
193 /* Mounted on Base-Board */
194 static struct pca953x_platform_data am3517evm_gpio_expander_info_0 = {
195         .gpio_base      = OMAP_MAX_GPIO_LINES,
196 };
197 static struct i2c_board_info __initdata am3517evm_i2c2_boardinfo[] = {
198         {
199                 I2C_BOARD_INFO("tlv320aic23", 0x1A),
200         },
201         {
202                 I2C_BOARD_INFO("tca6416", 0x21),
203                 .platform_data = &am3517evm_gpio_expander_info_0,
204         },
205 };
206 
207 /* Mounted on UI Card */
208 static struct pca953x_platform_data am3517evm_ui_gpio_expander_info_1 = {
209         .gpio_base      = OMAP_MAX_GPIO_LINES + 16,
210 };
211 static struct pca953x_platform_data am3517evm_ui_gpio_expander_info_2 = {
212         .gpio_base      = OMAP_MAX_GPIO_LINES + 32,
213 };
214 static struct i2c_board_info __initdata am3517evm_i2c3_boardinfo[] = {
215         {
216                 I2C_BOARD_INFO("tca6416", 0x20),
217                 .platform_data = &am3517evm_ui_gpio_expander_info_1,
218         },
219         {
220                 I2C_BOARD_INFO("tca6416", 0x21),
221                 .platform_data = &am3517evm_ui_gpio_expander_info_2,
222         },
223 };
224 
225 static int __init am3517_evm_i2c_init(void)
226 {
227         omap_register_i2c_bus(1, 400, NULL, 0);
228         omap_register_i2c_bus(2, 400, am3517evm_i2c2_boardinfo,
229                         ARRAY_SIZE(am3517evm_i2c2_boardinfo));
230         omap_register_i2c_bus(3, 400, am3517evm_i2c3_boardinfo,
231                         ARRAY_SIZE(am3517evm_i2c3_boardinfo));
232 
233         return 0;
234 }
235 
236 static int lcd_enabled;
237 static int dvi_enabled;
238 
239 #if defined(CONFIG_PANEL_SHARP_LQ043T1DG01) || \
240                 defined(CONFIG_PANEL_SHARP_LQ043T1DG01_MODULE)
241 static struct gpio am3517_evm_dss_gpios[] __initdata = {
242         /* GPIO 182 = LCD Backlight Power */
243         { LCD_PANEL_BKLIGHT_PWR, GPIOF_OUT_INIT_HIGH, "lcd_backlight_pwr" },
244         /* GPIO 181 = LCD Panel PWM */
245         { LCD_PANEL_PWM,         GPIOF_OUT_INIT_HIGH, "lcd bl enable"     },
246         /* GPIO 176 = LCD Panel Power enable pin */
247         { LCD_PANEL_PWR,         GPIOF_OUT_INIT_HIGH, "dvi enable"        },
248 };
249 
250 static void __init am3517_evm_display_init(void)
251 {
252         int r;
253 
254         omap_mux_init_gpio(LCD_PANEL_PWR, OMAP_PIN_INPUT_PULLUP);
255         omap_mux_init_gpio(LCD_PANEL_BKLIGHT_PWR, OMAP_PIN_INPUT_PULLDOWN);
256         omap_mux_init_gpio(LCD_PANEL_PWM, OMAP_PIN_INPUT_PULLDOWN);
257 
258         r = gpio_request_array(am3517_evm_dss_gpios,
259                                ARRAY_SIZE(am3517_evm_dss_gpios));
260         if (r) {
261                 printk(KERN_ERR "failed to get DSS panel control GPIOs\n");
262                 return;
263         }
264 
265         printk(KERN_INFO "Display initialized successfully\n");
266 }
267 #else
268 static void __init am3517_evm_display_init(void) {}
269 #endif
270 
271 static int am3517_evm_panel_enable_lcd(struct omap_dss_device *dssdev)
272 {
273         if (dvi_enabled) {
274                 printk(KERN_ERR "cannot enable LCD, DVI is enabled\n");
275                 return -EINVAL;
276         }
277         gpio_set_value(LCD_PANEL_PWR, 1);
278         lcd_enabled = 1;
279 
280         return 0;
281 }
282 
283 static void am3517_evm_panel_disable_lcd(struct omap_dss_device *dssdev)
284 {
285         gpio_set_value(LCD_PANEL_PWR, 0);
286         lcd_enabled = 0;
287 }
288 
289 static struct panel_generic_dpi_data lcd_panel = {
290         .name                   = "sharp_lq",
291         .platform_enable        = am3517_evm_panel_enable_lcd,
292         .platform_disable       = am3517_evm_panel_disable_lcd,
293 };
294 
295 static struct omap_dss_device am3517_evm_lcd_device = {
296         .type                   = OMAP_DISPLAY_TYPE_DPI,
297         .name                   = "lcd",
298         .driver_name            = "generic_dpi_panel",
299         .data                   = &lcd_panel,
300         .phy.dpi.data_lines     = 16,
301 };
302 
303 static int am3517_evm_panel_enable_tv(struct omap_dss_device *dssdev)
304 {
305         return 0;
306 }
307 
308 static void am3517_evm_panel_disable_tv(struct omap_dss_device *dssdev)
309 {
310 }
311 
312 static struct omap_dss_device am3517_evm_tv_device = {
313         .type                   = OMAP_DISPLAY_TYPE_VENC,
314         .name                   = "tv",
315         .driver_name            = "venc",
316         .phy.venc.type          = OMAP_DSS_VENC_TYPE_SVIDEO,
317         .platform_enable        = am3517_evm_panel_enable_tv,
318         .platform_disable       = am3517_evm_panel_disable_tv,
319 };
320 
321 static int am3517_evm_panel_enable_dvi(struct omap_dss_device *dssdev)
322 {
323         if (lcd_enabled) {
324                 printk(KERN_ERR "cannot enable DVI, LCD is enabled\n");
325                 return -EINVAL;
326         }
327         dvi_enabled = 1;
328 
329         return 0;
330 }
331 
332 static void am3517_evm_panel_disable_dvi(struct omap_dss_device *dssdev)
333 {
334         dvi_enabled = 0;
335 }
336 
337 static struct panel_dvi_platform_data dvi_panel = {
338         .platform_enable        = am3517_evm_panel_enable_dvi,
339         .platform_disable       = am3517_evm_panel_disable_dvi,
340 };
341 
342 static struct omap_dss_device am3517_evm_dvi_device = {
343         .type                   = OMAP_DISPLAY_TYPE_DPI,
344         .name                   = "dvi",
345         .driver_name            = "dvi",
346         .data                   = &dvi_panel,
347         .phy.dpi.data_lines     = 24,
348 };
349 
350 static struct omap_dss_device *am3517_evm_dss_devices[] = {
351         &am3517_evm_lcd_device,
352         &am3517_evm_tv_device,
353         &am3517_evm_dvi_device,
354 };
355 
356 static struct omap_dss_board_info am3517_evm_dss_data = {
357         .num_devices    = ARRAY_SIZE(am3517_evm_dss_devices),
358         .devices        = am3517_evm_dss_devices,
359         .default_device = &am3517_evm_lcd_device,
360 };
361 
362 /*
363  * Board initialization
364  */
365 
366 static struct omap_musb_board_data musb_board_data = {
367         .interface_type         = MUSB_INTERFACE_ULPI,
368         .mode                   = MUSB_OTG,
369         .power                  = 500,
370         .set_phy_power          = am35x_musb_phy_power,
371         .clear_irq              = am35x_musb_clear_irq,
372         .set_mode               = am35x_set_mode,
373         .reset                  = am35x_musb_reset,
374 };
375 
376 static __init void am3517_evm_musb_init(void)
377 {
378         u32 devconf2;
379 
380         /*
381          * Set up USB clock/mode in the DEVCONF2 register.
382          */
383         devconf2 = omap_ctrl_readl(AM35XX_CONTROL_DEVCONF2);
384 
385         /* USB2.0 PHY reference clock is 13 MHz */
386         devconf2 &= ~(CONF2_REFFREQ | CONF2_OTGMODE | CONF2_PHY_GPIOMODE);
387         devconf2 |=  CONF2_REFFREQ_13MHZ | CONF2_SESENDEN | CONF2_VBDTCTEN
388                         | CONF2_DATPOL;
389 
390         omap_ctrl_writel(devconf2, AM35XX_CONTROL_DEVCONF2);
391 
392         usb_musb_init(&musb_board_data);
393 }
394 
395 static const struct usbhs_omap_board_data usbhs_bdata __initconst = {
396         .port_mode[0] = OMAP_EHCI_PORT_MODE_PHY,
397 #if defined(CONFIG_PANEL_SHARP_LQ043T1DG01) || \
398                 defined(CONFIG_PANEL_SHARP_LQ043T1DG01_MODULE)
399         .port_mode[1] = OMAP_USBHS_PORT_MODE_UNUSED,
400 #else
401         .port_mode[1] = OMAP_EHCI_PORT_MODE_PHY,
402 #endif
403         .port_mode[2] = OMAP_USBHS_PORT_MODE_UNUSED,
404 
405         .phy_reset  = true,
406         .reset_gpio_port[0]  = 57,
407         .reset_gpio_port[1]  = -EINVAL,
408         .reset_gpio_port[2]  = -EINVAL
409 };
410 
411 #ifdef CONFIG_OMAP_MUX
412 static struct omap_board_mux board_mux[] __initdata = {
413         /* USB OTG DRVVBUS offset = 0x212 */
414         OMAP3_MUX(SAD2D_MCAD23, OMAP_MUX_MODE0 | OMAP_PIN_INPUT_PULLDOWN),
415         { .reg_offset = OMAP_MUX_TERMINATOR },
416 };
417 #endif
418 
419 
420 static struct resource am3517_hecc_resources[] = {
421         {
422                 .start  = AM35XX_IPSS_HECC_BASE,
423                 .end    = AM35XX_IPSS_HECC_BASE + 0x3FFF,
424                 .flags  = IORESOURCE_MEM,
425         },
426         {
427                 .start  = INT_35XX_HECC0_IRQ,
428                 .end    = INT_35XX_HECC0_IRQ,
429                 .flags  = IORESOURCE_IRQ,
430         },
431 };
432 
433 static struct platform_device am3517_hecc_device = {
434         .name           = "ti_hecc",
435         .id             = -1,
436         .num_resources  = ARRAY_SIZE(am3517_hecc_resources),
437         .resource       = am3517_hecc_resources,
438 };
439 
440 static struct ti_hecc_platform_data am3517_evm_hecc_pdata = {
441         .scc_hecc_offset        = AM35XX_HECC_SCC_HECC_OFFSET,
442         .scc_ram_offset         = AM35XX_HECC_SCC_RAM_OFFSET,
443         .hecc_ram_offset        = AM35XX_HECC_RAM_OFFSET,
444         .mbx_offset             = AM35XX_HECC_MBOX_OFFSET,
445         .int_line               = AM35XX_HECC_INT_LINE,
446         .version                = AM35XX_HECC_VERSION,
447 };
448 
449 static void am3517_evm_hecc_init(struct ti_hecc_platform_data *pdata)
450 {
451         am3517_hecc_device.dev.platform_data = pdata;
452         platform_device_register(&am3517_hecc_device);
453 }
454 
455 static struct omap_board_config_kernel am3517_evm_config[] __initdata = {
456 };
457 
458 static void __init am3517_evm_init(void)
459 {
460         omap_board_config = am3517_evm_config;
461         omap_board_config_size = ARRAY_SIZE(am3517_evm_config);
462         omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);
463 
464         am3517_evm_i2c_init();
465         omap_display_init(&am3517_evm_dss_data);
466         omap_serial_init();
467         omap_sdrc_init(NULL, NULL);
468 
469         /* Configure GPIO for EHCI port */
470         omap_mux_init_gpio(57, OMAP_PIN_OUTPUT);
471         usbhs_init(&usbhs_bdata);
472         am3517_evm_hecc_init(&am3517_evm_hecc_pdata);
473         /* DSS */
474         am3517_evm_display_init();
475 
476         /* RTC - S35390A */
477         am3517_evm_rtc_init();
478 
479         i2c_register_board_info(1, am3517evm_i2c1_boardinfo,
480                                 ARRAY_SIZE(am3517evm_i2c1_boardinfo));
481         /*Ethernet*/
482         am3517_evm_ethernet_init(&am3517_evm_emac_pdata);
483 
484         /* MUSB */
485         am3517_evm_musb_init();
486 }
487 
488 MACHINE_START(OMAP3517EVM, "OMAP3517/AM3517 EVM")
489         .atag_offset    = 0x100,
490         .reserve        = omap_reserve,
491         .map_io         = omap3_map_io,
492         .init_early     = am35xx_init_early,
493         .init_irq       = omap3_init_irq,
494         .init_machine   = am3517_evm_init,
495         .timer          = &omap3_timer,
496 MACHINE_END
497 

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