[net-next-2.6.git] / drivers / pcmcia / pxa2xx_lubbock.c

/*
 * linux/drivers/pcmcia/pxa2xx_lubbock.c
 *
 * Author:	George Davis
 * Created:	Jan 10, 2002
 * Copyright:	MontaVista Software Inc.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * Originally based upon linux/drivers/pcmcia/sa1100_neponset.c
 *
 * Lubbock PCMCIA specific routines.
 *
 */
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/device.h>
#include <linux/errno.h>
#include <linux/init.h>
#include <linux/delay.h>

#include <asm/hardware.h>
#include <asm/hardware/sa1111.h>
#include <asm/mach-types.h>
#include <asm/arch/pxa-regs.h>
#include <asm/arch/lubbock.h>

#include "sa1111_generic.h"

static int
lubbock_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
{
	/*
	 * Setup default state of GPIO outputs
	 * before we enable them as outputs.
	 */
	GPSR(GPIO48_nPOE) =
		GPIO_bit(GPIO48_nPOE) |
		GPIO_bit(GPIO49_nPWE) |
		GPIO_bit(GPIO50_nPIOR) |
		GPIO_bit(GPIO51_nPIOW) |
		GPIO_bit(GPIO52_nPCE_1) |
		GPIO_bit(GPIO53_nPCE_2);

	pxa_gpio_mode(GPIO48_nPOE_MD);
	pxa_gpio_mode(GPIO49_nPWE_MD);
	pxa_gpio_mode(GPIO50_nPIOR_MD);
	pxa_gpio_mode(GPIO51_nPIOW_MD);
	pxa_gpio_mode(GPIO52_nPCE_1_MD);
	pxa_gpio_mode(GPIO53_nPCE_2_MD);
	pxa_gpio_mode(GPIO54_pSKTSEL_MD);
	pxa_gpio_mode(GPIO55_nPREG_MD);
	pxa_gpio_mode(GPIO56_nPWAIT_MD);
	pxa_gpio_mode(GPIO57_nIOIS16_MD);

	return sa1111_pcmcia_hw_init(skt);
}

static int
lubbock_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
				const socket_state_t *state)
{
	unsigned int pa_dwr_mask, pa_dwr_set, misc_mask, misc_set;
	int ret = 0;

	pa_dwr_mask = pa_dwr_set = misc_mask = misc_set = 0;

	/* Lubbock uses the Maxim MAX1602, with the following connections:
	 *
	 * Socket 0 (PCMCIA):
	 *	MAX1602	Lubbock		Register
	 *	Pin	Signal
	 *	-----	-------		----------------------
	 *	A0VPP	S0_PWR0		SA-1111 GPIO A<0>
	 *	A1VPP	S0_PWR1		SA-1111 GPIO A<1>
	 *	A0VCC	S0_PWR2		SA-1111 GPIO A<2>
	 *	A1VCC	S0_PWR3		SA-1111 GPIO A<3>
	 *	VX	VCC
	 *	VY	+3.3V
	 *	12IN	+12V
	 *	CODE	+3.3V		Cirrus  Code, CODE = High (VY)
	 *
	 * Socket 1 (CF):
	 *	MAX1602	Lubbock		Register
	 *	Pin	Signal
	 *	-----	-------		----------------------
	 *	A0VPP	GND		VPP is not connected
	 *	A1VPP	GND		VPP is not connected
	 *	A0VCC	S1_PWR0		MISC_WR<14>
	 *	A1VCC	S1_PWR1		MISC_WR<15>
	 *	VX	VCC
	 *	VY	+3.3V
	 *	12IN	GND		VPP is not connected
	 *	CODE	+3.3V		Cirrus  Code, CODE = High (VY)
	 *
	 */

 again:
	switch (skt->nr) {
	case 0:
		pa_dwr_mask = GPIO_A0 | GPIO_A1 | GPIO_A2 | GPIO_A3;

		switch (state->Vcc) {
		case 0: /* Hi-Z */
			break;

		case 33: /* VY */
			pa_dwr_set |= GPIO_A3;
			break;

		case 50: /* VX */
			pa_dwr_set |= GPIO_A2;
			break;

		default:
			printk(KERN_ERR "%s(): unrecognized Vcc %u\n",
			       __FUNCTION__, state->Vcc);
			ret = -1;
		}

		switch (state->Vpp) {
		case 0: /* Hi-Z */
			break;

		case 120: /* 12IN */
			pa_dwr_set |= GPIO_A1;
			break;

		default: /* VCC */
			if (state->Vpp == state->Vcc)
				pa_dwr_set |= GPIO_A0;
			else {
				printk(KERN_ERR "%s(): unrecognized Vpp %u\n",
				       __FUNCTION__, state->Vpp);
				ret = -1;
				break;
			}
		}
		break;

	case 1:
		misc_mask = (1 << 15) | (1 << 14);

		switch (state->Vcc) {
		case 0: /* Hi-Z */
			break;

		case 33: /* VY */
			misc_set |= 1 << 15;
			break;

		case 50: /* VX */
			misc_set |= 1 << 14;
			break;

		default:
			printk(KERN_ERR "%s(): unrecognized Vcc %u\n",
			       __FUNCTION__, state->Vcc);
			ret = -1;
			break;
		}

		if (state->Vpp != state->Vcc && state->Vpp != 0) {
			printk(KERN_ERR "%s(): CF slot cannot support Vpp %u\n",
			       __FUNCTION__, state->Vpp);
			ret = -1;
			break;
		}
		break;

	default:
		ret = -1;
	}

	if (ret == 0)
		ret = sa1111_pcmcia_configure_socket(skt, state);

	if (ret == 0) {
		lubbock_set_misc_wr(misc_mask, misc_set);
		sa1111_set_io(SA1111_DEV(skt->dev), pa_dwr_mask, pa_dwr_set);
	}

#if 1
	if (ret == 0 && state->Vcc == 33) {
		struct pcmcia_state new_state;

		/*
		 * HACK ALERT:
		 * We can't sense the voltage properly on Lubbock before
		 * actually applying some power to the socket (catch 22).
		 * Resense the socket Voltage Sense pins after applying
		 * socket power.
		 *
		 * Note: It takes about 2.5ms for the MAX1602 VCC output
		 * to rise.
		 */
		mdelay(3);

		sa1111_pcmcia_socket_state(skt, &new_state);

		if (!new_state.vs_3v && !new_state.vs_Xv) {
			/*
			 * Switch to 5V,  Configure socket with 5V voltage
			 */
			lubbock_set_misc_wr(misc_mask, 0);
			sa1111_set_io(SA1111_DEV(skt->dev), pa_dwr_mask, 0);

			/*
			 * It takes about 100ms to turn off Vcc.
			 */
			mdelay(100);

			/*
			 * We need to hack around the const qualifier as
			 * well to keep this ugly workaround localized and
			 * not force it to the rest of the code. Barf bags
			 * avaliable in the seat pocket in front of you!
			 */
			((socket_state_t *)state)->Vcc = 50;
			((socket_state_t *)state)->Vpp = 50;
			goto again;
		}
	}
#endif

	return ret;
}

static struct pcmcia_low_level lubbock_pcmcia_ops = {
	.owner			= THIS_MODULE,
	.hw_init		= lubbock_pcmcia_hw_init,
	.hw_shutdown		= sa1111_pcmcia_hw_shutdown,
	.socket_state		= sa1111_pcmcia_socket_state,
	.configure_socket	= lubbock_pcmcia_configure_socket,
	.socket_init		= sa1111_pcmcia_socket_init,
	.socket_suspend		= sa1111_pcmcia_socket_suspend,
	.first			= 0,
	.nr			= 2,
};

#include "pxa2xx_base.h"

int __init pcmcia_lubbock_init(struct sa1111_dev *sadev)
{
	int ret = -ENODEV;

	if (machine_is_lubbock()) {
		/*
		 * Set GPIO_A<3:0> to be outputs for the MAX1600,
		 * and switch to standby mode.
		 */
		sa1111_set_io_dir(sadev, GPIO_A0|GPIO_A1|GPIO_A2|GPIO_A3, 0, 0);
		sa1111_set_io(sadev, GPIO_A0|GPIO_A1|GPIO_A2|GPIO_A3, 0);
		sa1111_set_sleep_io(sadev, GPIO_A0|GPIO_A1|GPIO_A2|GPIO_A3, 0);

		/* Set CF Socket 1 power to standby mode. */
		lubbock_set_misc_wr((1 << 15) | (1 << 14), 0);

		sadev->dev.platform_data = &lubbock_pcmcia_ops;
		ret = __pxa2xx_drv_pcmcia_probe(&sadev->dev);
	}

	return ret;
}

MODULE_LICENSE("GPL");
Commit	Line	Data
1da177e4 LT	1	/*
	2	* linux/drivers/pcmcia/pxa2xx_lubbock.c
	3	*
	4	* Author: George Davis
	5	* Created: Jan 10, 2002
	6	* Copyright: MontaVista Software Inc.
	7	*
	8	* This program is free software; you can redistribute it and/or modify
	9	* it under the terms of the GNU General Public License version 2 as
	10	* published by the Free Software Foundation.
	11	*
	12	* Originally based upon linux/drivers/pcmcia/sa1100_neponset.c
	13	*
	14	* Lubbock PCMCIA specific routines.
	15	*
	16	*/
	17	#include <linux/module.h>
	18	#include <linux/kernel.h>
1da177e4 LT	19	#include <linux/device.h>
	20	#include <linux/errno.h>
	21	#include <linux/init.h>
	22	#include <linux/delay.h>
	23
	24	#include <asm/hardware.h>
	25	#include <asm/hardware/sa1111.h>
	26	#include <asm/mach-types.h>
	27	#include <asm/arch/pxa-regs.h>
	28	#include <asm/arch/lubbock.h>
	29
	30	#include "sa1111_generic.h"
	31
	32	static int
	33	lubbock_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
	34	{
	35	/*
	36	* Setup default state of GPIO outputs
	37	* before we enable them as outputs.
	38	*/
	39	GPSR(GPIO48_nPOE) =
	40	GPIO_bit(GPIO48_nPOE) \|
	41	GPIO_bit(GPIO49_nPWE) \|
	42	GPIO_bit(GPIO50_nPIOR) \|
	43	GPIO_bit(GPIO51_nPIOW) \|
	44	GPIO_bit(GPIO52_nPCE_1) \|
	45	GPIO_bit(GPIO53_nPCE_2);
	46
	47	pxa_gpio_mode(GPIO48_nPOE_MD);
	48	pxa_gpio_mode(GPIO49_nPWE_MD);
	49	pxa_gpio_mode(GPIO50_nPIOR_MD);
	50	pxa_gpio_mode(GPIO51_nPIOW_MD);
	51	pxa_gpio_mode(GPIO52_nPCE_1_MD);
	52	pxa_gpio_mode(GPIO53_nPCE_2_MD);
	53	pxa_gpio_mode(GPIO54_pSKTSEL_MD);
	54	pxa_gpio_mode(GPIO55_nPREG_MD);
	55	pxa_gpio_mode(GPIO56_nPWAIT_MD);
	56	pxa_gpio_mode(GPIO57_nIOIS16_MD);
	57
	58	return sa1111_pcmcia_hw_init(skt);
	59	}
	60
	61	static int
	62	lubbock_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
	63	const socket_state_t *state)
	64	{
	65	unsigned int pa_dwr_mask, pa_dwr_set, misc_mask, misc_set;
	66	int ret = 0;
	67
	68	pa_dwr_mask = pa_dwr_set = misc_mask = misc_set = 0;
	69
	70	/* Lubbock uses the Maxim MAX1602, with the following connections:
	71	*
	72	* Socket 0 (PCMCIA):
	73	* MAX1602 Lubbock Register
	74	* Pin Signal
	75	* ----- ------- ----------------------
	76	* A0VPP S0_PWR0 SA-1111 GPIO A<0>
	77	* A1VPP S0_PWR1 SA-1111 GPIO A<1>
	78	* A0VCC S0_PWR2 SA-1111 GPIO A<2>
	79	* A1VCC S0_PWR3 SA-1111 GPIO A<3>
	80	* VX VCC
	81	* VY +3.3V
	82	* 12IN +12V
83	* CODE +3.3V Cirrus Code, CODE = High (VY)
84	*
85	* Socket 1 (CF):
86	* MAX1602 Lubbock Register
87	* Pin Signal
88	* ----- ------- ----------------------
89	* A0VPP GND VPP is not connected
90	* A1VPP GND VPP is not connected
91	* A0VCC S1_PWR0 MISC_WR<14>
92	* A1VCC S1_PWR1 MISC_WR<15>
93	* VX VCC
94	* VY +3.3V
95	* 12IN GND VPP is not connected
96	* CODE +3.3V Cirrus Code, CODE = High (VY)
97	*
98	*/
99
100	again:
101	switch (skt->nr) {
102	case 0:
103	pa_dwr_mask = GPIO_A0 \| GPIO_A1 \| GPIO_A2 \| GPIO_A3;
104
105	switch (state->Vcc) {
106	case 0: /* Hi-Z */
107	break;
108
109	case 33: /* VY */
110	pa_dwr_set \|= GPIO_A3;
111	break;
112
113	case 50: /* VX */
114	pa_dwr_set \|= GPIO_A2;
115	break;
116
117	default:
118	printk(KERN_ERR "%s(): unrecognized Vcc %u\n",
119	__FUNCTION__, state->Vcc);
120	ret = -1;
121	}
122
123	switch (state->Vpp) {
124	case 0: /* Hi-Z */
125	break;
126
127	case 120: /* 12IN */
128	pa_dwr_set \|= GPIO_A1;
129	break;
130
131	default: /* VCC */
132	if (state->Vpp == state->Vcc)
133	pa_dwr_set \|= GPIO_A0;
134	else {
135	printk(KERN_ERR "%s(): unrecognized Vpp %u\n",
136	__FUNCTION__, state->Vpp);
137	ret = -1;
138	break;
139	}
140	}
141	break;
142
143	case 1:
144	misc_mask = (1 << 15) \| (1 << 14);
145
146	switch (state->Vcc) {
147	case 0: /* Hi-Z */
148	break;
149
150	case 33: /* VY */
151	misc_set \|= 1 << 15;
152	break;
153
154	case 50: /* VX */
155	misc_set \|= 1 << 14;
156	break;
157
158	default:
159	printk(KERN_ERR "%s(): unrecognized Vcc %u\n",
160	__FUNCTION__, state->Vcc);
161	ret = -1;
162	break;
163	}
164
165	if (state->Vpp != state->Vcc && state->Vpp != 0) {
166	printk(KERN_ERR "%s(): CF slot cannot support Vpp %u\n",
167	__FUNCTION__, state->Vpp);
168	ret = -1;
169	break;
170	}
171	break;
172
173	default:
174	ret = -1;
175	}
176
177	if (ret == 0)
178	ret = sa1111_pcmcia_configure_socket(skt, state);
179
180	if (ret == 0) {
181	lubbock_set_misc_wr(misc_mask, misc_set);
182	sa1111_set_io(SA1111_DEV(skt->dev), pa_dwr_mask, pa_dwr_set);
183	}
184
185	#if 1
186	if (ret == 0 && state->Vcc == 33) {
187	struct pcmcia_state new_state;
188
189	/*
190	* HACK ALERT:
191	* We can't sense the voltage properly on Lubbock before
192	* actually applying some power to the socket (catch 22).
193	* Resense the socket Voltage Sense pins after applying
194	* socket power.
195	*
196	* Note: It takes about 2.5ms for the MAX1602 VCC output
197	* to rise.
198	*/
199	mdelay(3);
200
201	sa1111_pcmcia_socket_state(skt, &new_state);
202
203	if (!new_state.vs_3v && !new_state.vs_Xv) {
204	/*
205	* Switch to 5V, Configure socket with 5V voltage
206	*/
207	lubbock_set_misc_wr(misc_mask, 0);
208	sa1111_set_io(SA1111_DEV(skt->dev), pa_dwr_mask, 0);
209
210	/*
211	* It takes about 100ms to turn off Vcc.
212	*/
213	mdelay(100);
214
215	/*
216	* We need to hack around the const qualifier as
217	* well to keep this ugly workaround localized and
218	* not force it to the rest of the code. Barf bags
219	* avaliable in the seat pocket in front of you!
220	*/
221	((socket_state_t *)state)->Vcc = 50;
222	((socket_state_t *)state)->Vpp = 50;
223	goto again;
224	}
225	}
226	#endif
227
228	return ret;
229	}
230
231	static struct pcmcia_low_level lubbock_pcmcia_ops = {
232	.owner = THIS_MODULE,
233	.hw_init = lubbock_pcmcia_hw_init,
234	.hw_shutdown = sa1111_pcmcia_hw_shutdown,
235	.socket_state = sa1111_pcmcia_socket_state,
236	.configure_socket = lubbock_pcmcia_configure_socket,
237	.socket_init = sa1111_pcmcia_socket_init,
238	.socket_suspend = sa1111_pcmcia_socket_suspend,
239	.first = 0,
240	.nr = 2,
241	};
242
243	#include "pxa2xx_base.h"
244
245	int __init pcmcia_lubbock_init(struct sa1111_dev *sadev)
246	{
247	int ret = -ENODEV;
248
249	if (machine_is_lubbock()) {
250	/*
251	* Set GPIO_A<3:0> to be outputs for the MAX1600,
252	* and switch to standby mode.
253	*/
254	sa1111_set_io_dir(sadev, GPIO_A0\|GPIO_A1\|GPIO_A2\|GPIO_A3, 0, 0);
255	sa1111_set_io(sadev, GPIO_A0\|GPIO_A1\|GPIO_A2\|GPIO_A3, 0);
256	sa1111_set_sleep_io(sadev, GPIO_A0\|GPIO_A1\|GPIO_A2\|GPIO_A3, 0);
257
258	/* Set CF Socket 1 power to standby mode. */
259	lubbock_set_misc_wr((1 << 15) \| (1 << 14), 0);
260
261	sadev->dev.platform_data = &lubbock_pcmcia_ops;
9468613b	262	ret = __pxa2xx_drv_pcmcia_probe(&sadev->dev);
1da177e4 LT	263	}
	264
	265	return ret;
	266	}
	267
	268	MODULE_LICENSE("GPL");