1/*
2 * linux/arch/arm/mach-omap1/board-osk.c
3 *
4 * Board specific init for OMAP5912 OSK
5 *
6 * Written by Dirk Behme <dirk.behme@de.bosch.com>
7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License as published by the
10 * Free Software Foundation; either version 2 of the License, or (at your
11 * option) any later version.
12 *
13 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
14 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
15 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN
16 * NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
17 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
18 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
19 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
20 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
22 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
23 *
24 * You should have received a copy of the GNU General Public License along
25 * with this program; if not, write to the Free Software Foundation, Inc.,
26 * 675 Mass Ave, Cambridge, MA 02139, USA.
27 */
28#include <linux/gpio/consumer.h>
29#include <linux/gpio/driver.h>
30#include <linux/gpio/machine.h>
31#include <linux/kernel.h>
32#include <linux/init.h>
33#include <linux/platform_device.h>
34#include <linux/interrupt.h>
35#include <linux/irq.h>
36#include <linux/i2c.h>
37#include <linux/leds.h>
38#include <linux/smc91x.h>
39#include <linux/omapfb.h>
40#include <linux/mtd/mtd.h>
41#include <linux/mtd/partitions.h>
42#include <linux/mtd/physmap.h>
43#include <linux/mfd/tps65010.h>
44#include <linux/platform_data/gpio-omap.h>
45#include <linux/platform_data/omap1_bl.h>
46#include <linux/soc/ti/omap1-io.h>
47
48#include <asm/mach-types.h>
49#include <asm/mach/arch.h>
50#include <asm/mach/map.h>
51
52#include "tc.h"
53#include "flash.h"
54#include "mux.h"
55#include "hardware.h"
56#include "usb.h"
57#include "common.h"
58
59/* Name of the GPIO chip used by the OMAP for GPIOs 0..15 */
60#define OMAP_GPIO_LABEL "gpio-0-15"
61
62/* At OMAP5912 OSK the Ethernet is directly connected to CS1 */
63#define OMAP_OSK_ETHR_START 0x04800300
64
65/* TPS65010 has four GPIOs. nPG and LED2 can be treated like GPIOs with
66 * alternate pin configurations for hardware-controlled blinking.
67 */
68#define OSK_TPS_GPIO_USB_PWR_EN 0
69#define OSK_TPS_GPIO_LED_D3 1
70#define OSK_TPS_GPIO_LAN_RESET 2
71#define OSK_TPS_GPIO_DSP_PWR_EN 3
72#define OSK_TPS_GPIO_LED_D9 4
73#define OSK_TPS_GPIO_LED_D2 5
74
75static struct mtd_partition osk_partitions[] = {
76 /* bootloader (U-Boot, etc) in first sector */
77 {
78 .name = "bootloader",
79 .offset = 0,
80 .size = SZ_128K,
81 .mask_flags = MTD_WRITEABLE, /* force read-only */
82 },
83 /* bootloader params in the next sector */
84 {
85 .name = "params",
86 .offset = MTDPART_OFS_APPEND,
87 .size = SZ_128K,
88 .mask_flags = 0,
89 }, {
90 .name = "kernel",
91 .offset = MTDPART_OFS_APPEND,
92 .size = SZ_2M,
93 .mask_flags = 0
94 }, {
95 .name = "filesystem",
96 .offset = MTDPART_OFS_APPEND,
97 .size = MTDPART_SIZ_FULL,
98 .mask_flags = 0
99 }
100};
101
102static struct physmap_flash_data osk_flash_data = {
103 .width = 2,
104 .set_vpp = omap1_set_vpp,
105 .parts = osk_partitions,
106 .nr_parts = ARRAY_SIZE(osk_partitions),
107};
108
109static struct resource osk_flash_resource = {
110 /* this is on CS3, wherever it's mapped */
111 .flags = IORESOURCE_MEM,
112};
113
114static struct platform_device osk5912_flash_device = {
115 .name = "physmap-flash",
116 .id = 0,
117 .dev = {
118 .platform_data = &osk_flash_data,
119 },
120 .num_resources = 1,
121 .resource = &osk_flash_resource,
122};
123
124static struct smc91x_platdata osk5912_smc91x_info = {
125 .flags = SMC91X_USE_16BIT | SMC91X_NOWAIT,
126 .leda = RPC_LED_100_10,
127 .ledb = RPC_LED_TX_RX,
128};
129
130static struct resource osk5912_smc91x_resources[] = {
131 [0] = {
132 .start = OMAP_OSK_ETHR_START, /* Physical */
133 .end = OMAP_OSK_ETHR_START + 0xf,
134 .flags = IORESOURCE_MEM,
135 },
136 [1] = {
137 .flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
138 },
139};
140
141static struct platform_device osk5912_smc91x_device = {
142 .name = "smc91x",
143 .id = -1,
144 .dev = {
145 .platform_data = &osk5912_smc91x_info,
146 },
147 .num_resources = ARRAY_SIZE(osk5912_smc91x_resources),
148 .resource = osk5912_smc91x_resources,
149};
150
151static struct resource osk5912_cf_resources[] = {
152 [0] = {
153 .flags = IORESOURCE_IRQ,
154 },
155 [1] = {
156 .flags = IORESOURCE_MEM,
157 },
158};
159
160static struct platform_device osk5912_cf_device = {
161 .name = "omap_cf",
162 .id = -1,
163 .num_resources = ARRAY_SIZE(osk5912_cf_resources),
164 .resource = osk5912_cf_resources,
165};
166
167static struct platform_device *osk5912_devices[] __initdata = {
168 &osk5912_flash_device,
169 &osk5912_smc91x_device,
170 &osk5912_cf_device,
171};
172
173static const struct gpio_led tps_leds[] = {
174 /* NOTE: D9 and D2 have hardware blink support.
175 * Also, D9 requires non-battery power.
176 */
177 { .name = "d9", .default_trigger = "disk-activity", },
178 { .name = "d2", },
179 { .name = "d3", .default_trigger = "heartbeat", },
180};
181
182static struct gpiod_lookup_table tps_leds_gpio_table = {
183 .dev_id = "leds-gpio",
184 .table = {
185 /* Use local offsets on TPS65010 */
186 GPIO_LOOKUP_IDX("tps65010", OSK_TPS_GPIO_LED_D9, NULL, 0, GPIO_ACTIVE_HIGH),
187 GPIO_LOOKUP_IDX("tps65010", OSK_TPS_GPIO_LED_D2, NULL, 1, GPIO_ACTIVE_HIGH),
188 GPIO_LOOKUP_IDX("tps65010", OSK_TPS_GPIO_LED_D3, NULL, 2, GPIO_ACTIVE_LOW),
189 { }
190 },
191};
192
193static struct gpio_led_platform_data tps_leds_data = {
194 .num_leds = 3,
195 .leds = tps_leds,
196};
197
198static struct platform_device osk5912_tps_leds = {
199 .name = "leds-gpio",
200 .id = 0,
201 .dev.platform_data = &tps_leds_data,
202};
203
204/* The board just hold these GPIOs hogged from setup to teardown */
205static struct gpio_desc *eth_reset;
206static struct gpio_desc *vdd_dsp;
207
208static int osk_tps_setup(struct i2c_client *client, struct gpio_chip *gc)
209{
210 struct gpio_desc *d;
211 if (!IS_BUILTIN(CONFIG_TPS65010))
212 return -ENOSYS;
213
214 /* Set GPIO 1 HIGH to disable VBUS power supply;
215 * OHCI driver powers it up/down as needed.
216 */
217 d = gpiochip_request_own_desc(gc, OSK_TPS_GPIO_USB_PWR_EN, label: "n_vbus_en",
218 lflags: GPIO_ACTIVE_HIGH, dflags: GPIOD_OUT_HIGH);
219 /* Free the GPIO again as the driver will request it */
220 gpiochip_free_own_desc(desc: d);
221
222 /* Set GPIO 2 high so LED D3 is off by default */
223 tps65010_set_gpio_out_value(GPIO2, HIGH);
224
225 /* Set GPIO 3 low to take ethernet out of reset */
226 eth_reset = gpiochip_request_own_desc(gc, OSK_TPS_GPIO_LAN_RESET, label: "smc_reset",
227 lflags: GPIO_ACTIVE_HIGH, dflags: GPIOD_OUT_LOW);
228
229 /* GPIO4 is VDD_DSP */
230 vdd_dsp = gpiochip_request_own_desc(gc, OSK_TPS_GPIO_DSP_PWR_EN, label: "dsp_power",
231 lflags: GPIO_ACTIVE_HIGH, dflags: GPIOD_OUT_HIGH);
232 /* REVISIT if DSP support isn't configured, power it off ... */
233
234 /* Let LED1 (D9) blink; leds-gpio may override it */
235 tps65010_set_led(LED1, BLINK);
236
237 /* Set LED2 off by default */
238 tps65010_set_led(LED2, OFF);
239
240 /* Enable LOW_PWR handshake */
241 tps65010_set_low_pwr(ON);
242
243 /* Switch VLDO2 to 3.0V for AIC23 */
244 tps65010_config_vregs1(TPS_LDO2_ENABLE | TPS_VLDO2_3_0V
245 | TPS_LDO1_ENABLE);
246
247 /* register these three LEDs */
248 osk5912_tps_leds.dev.parent = &client->dev;
249 gpiod_add_lookup_table(table: &tps_leds_gpio_table);
250 platform_device_register(&osk5912_tps_leds);
251
252 return 0;
253}
254
255static void osk_tps_teardown(struct i2c_client *client, struct gpio_chip *gc)
256{
257 gpiochip_free_own_desc(desc: eth_reset);
258 gpiochip_free_own_desc(desc: vdd_dsp);
259}
260
261static struct tps65010_board tps_board = {
262 .outmask = 0x0f,
263 .setup = osk_tps_setup,
264 .teardown = osk_tps_teardown,
265};
266
267static struct i2c_board_info __initdata osk_i2c_board_info[] = {
268 {
269 /* This device will get the name "i2c-tps65010" */
270 I2C_BOARD_INFO("tps65010", 0x48),
271 .dev_name = "tps65010",
272 .platform_data = &tps_board,
273
274 },
275 {
276 I2C_BOARD_INFO("tlv320aic23", 0x1B),
277 },
278 /* TODO when driver support is ready:
279 * - optionally on Mistral, ov9640 camera sensor at 0x30
280 */
281};
282
283static void __init osk_init_smc91x(void)
284{
285 u32 l;
286
287 /* Check EMIFS wait states to fix errors with SMC_GET_PKT_HDR */
288 l = omap_readl(EMIFS_CCS(1));
289 l |= 0x3;
290 omap_writel(v: l, EMIFS_CCS(1));
291}
292
293static void __init osk_init_cf(int seg)
294{
295 struct resource *res = &osk5912_cf_resources[1];
296
297 omap_cfg_reg(reg_cfg: M7_1610_GPIO62);
298
299 switch (seg) {
300 /* NOTE: CS0 could be configured too ... */
301 case 1:
302 res->start = OMAP_CS1_PHYS;
303 break;
304 case 2:
305 res->start = OMAP_CS2_PHYS;
306 break;
307 case 3:
308 res->start = omap_cs3_phys();
309 break;
310 }
311
312 res->end = res->start + SZ_8K - 1;
313 osk5912_cf_device.dev.platform_data = (void *)(uintptr_t)seg;
314
315 /* NOTE: better EMIFS setup might support more cards; but the
316 * TRM only shows how to affect regular flash signals, not their
317 * CF/PCMCIA variants...
318 */
319 pr_debug("%s: cs%d, previous ccs %08x acs %08x\n", __func__,
320 seg, omap_readl(EMIFS_CCS(seg)), omap_readl(EMIFS_ACS(seg)));
321 omap_writel(v: 0x0004a1b3, EMIFS_CCS(seg)); /* synch mode 4 etc */
322 omap_writel(v: 0x00000000, EMIFS_ACS(seg)); /* OE hold/setup */
323}
324
325static struct gpiod_lookup_table osk_usb_gpio_table = {
326 .dev_id = "ohci",
327 .table = {
328 /* Power GPIO on the I2C-attached TPS65010 */
329 GPIO_LOOKUP("tps65010", OSK_TPS_GPIO_USB_PWR_EN, "power",
330 GPIO_ACTIVE_HIGH),
331 GPIO_LOOKUP(OMAP_GPIO_LABEL, 9, "overcurrent",
332 GPIO_ACTIVE_HIGH),
333 { }
334 },
335};
336
337static struct omap_usb_config osk_usb_config __initdata = {
338 /* has usb host connector (A) ... for development it can also
339 * be used, with a NONSTANDARD gender-bending cable/dongle, as
340 * a peripheral.
341 */
342#if IS_ENABLED(CONFIG_USB_OMAP)
343 .register_dev = 1,
344 .hmc_mode = 0,
345#else
346 .register_host = 1,
347 .hmc_mode = 16,
348 .rwc = 1,
349#endif
350 .pins[0] = 2,
351};
352
353#define EMIFS_CS3_VAL (0x88013141)
354
355static struct gpiod_lookup_table osk_irq_gpio_table = {
356 .dev_id = NULL,
357 .table = {
358 /* GPIO used for SMC91x IRQ */
359 GPIO_LOOKUP(OMAP_GPIO_LABEL, 0, "smc_irq",
360 GPIO_ACTIVE_HIGH),
361 /* GPIO used for CF IRQ */
362 GPIO_LOOKUP("gpio-48-63", 14, "cf_irq",
363 GPIO_ACTIVE_HIGH),
364 /* GPIO used by the TPS65010 chip */
365 GPIO_LOOKUP("mpuio", 1, "tps65010",
366 GPIO_ACTIVE_HIGH),
367 /* GPIOs used for serial wakeup IRQs */
368 GPIO_LOOKUP_IDX("gpio-32-47", 5, "wakeup", 0,
369 GPIO_ACTIVE_HIGH),
370 GPIO_LOOKUP_IDX("gpio-16-31", 2, "wakeup", 1,
371 GPIO_ACTIVE_HIGH),
372 GPIO_LOOKUP_IDX("gpio-48-63", 1, "wakeup", 2,
373 GPIO_ACTIVE_HIGH),
374 { }
375 },
376};
377
378static void __init osk_init(void)
379{
380 struct gpio_desc *d;
381 u32 l;
382
383 osk_init_smc91x();
384 osk_init_cf(seg: 2); /* CS2 */
385
386 /* Workaround for wrong CS3 (NOR flash) timing
387 * There are some U-Boot versions out there which configure
388 * wrong CS3 memory timings. This mainly leads to CRC
389 * or similar errors if you use NOR flash (e.g. with JFFS2)
390 */
391 l = omap_readl(EMIFS_CCS(3));
392 if (l != EMIFS_CS3_VAL)
393 omap_writel(EMIFS_CS3_VAL, EMIFS_CCS(3));
394
395 osk_flash_resource.end = osk_flash_resource.start = omap_cs3_phys();
396 osk_flash_resource.end += SZ_32M - 1;
397
398 /*
399 * Add the GPIOs to be used as IRQs and immediately look them up
400 * to be passed as an IRQ resource. This is ugly but should work
401 * until the day we convert to device tree.
402 */
403 gpiod_add_lookup_table(table: &osk_irq_gpio_table);
404
405 d = gpiod_get(NULL, con_id: "smc_irq", flags: GPIOD_IN);
406 if (IS_ERR(ptr: d)) {
407 pr_err("Unable to get SMC IRQ GPIO descriptor\n");
408 } else {
409 irq_set_irq_type(irq: gpiod_to_irq(desc: d), type: IRQ_TYPE_EDGE_RISING);
410 osk5912_smc91x_resources[1] = DEFINE_RES_IRQ(gpiod_to_irq(d));
411 }
412
413 d = gpiod_get(NULL, con_id: "cf_irq", flags: GPIOD_IN);
414 if (IS_ERR(ptr: d)) {
415 pr_err("Unable to get CF IRQ GPIO descriptor\n");
416 } else {
417 /* the CF I/O IRQ is really active-low */
418 irq_set_irq_type(irq: gpiod_to_irq(desc: d), type: IRQ_TYPE_EDGE_FALLING);
419 osk5912_cf_resources[0] = DEFINE_RES_IRQ(gpiod_to_irq(d));
420 }
421
422 platform_add_devices(osk5912_devices, ARRAY_SIZE(osk5912_devices));
423
424 l = omap_readl(USB_TRANSCEIVER_CTRL);
425 l |= (3 << 1);
426 omap_writel(v: l, USB_TRANSCEIVER_CTRL);
427
428 gpiod_add_lookup_table(table: &osk_usb_gpio_table);
429 omap1_usb_init(pdata: &osk_usb_config);
430
431 omap_serial_init();
432
433 /* irq for tps65010 chip */
434 /* bootloader effectively does: omap_cfg_reg(U19_1610_MPUIO1); */
435 d = gpiod_get(NULL, con_id: "tps65010", flags: GPIOD_IN);
436 if (IS_ERR(ptr: d))
437 pr_err("Unable to get TPS65010 IRQ GPIO descriptor\n");
438 else
439 osk_i2c_board_info[0].irq = gpiod_to_irq(desc: d);
440 omap_register_i2c_bus(bus_id: 1, clkrate: 400, info: osk_i2c_board_info,
441 ARRAY_SIZE(osk_i2c_board_info));
442}
443
444MACHINE_START(OMAP_OSK, "TI-OSK")
445 /* Maintainer: Dirk Behme <dirk.behme@de.bosch.com> */
446 .atag_offset = 0x100,
447 .map_io = omap1_map_io,
448 .init_early = omap1_init_early,
449 .init_irq = omap1_init_irq,
450 .init_machine = osk_init,
451 .init_late = omap1_init_late,
452 .init_time = omap1_timer_init,
453 .restart = omap1_restart,
454MACHINE_END
455

source code of linux/arch/arm/mach-omap1/board-osk.c