// SPDX-License-Identifier: GPL-2.0-only

  /*
   * linux/drivers/pcmcia/pxa2xx_lubbock.c
   *
   * Author:	George Davis
   * Created:	Jan 10, 2002
   * Copyright:	MontaVista Software Inc.
   *

   * 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 <mach/hardware.h>

  #include <asm/hardware/sa1111.h>
  #include <asm/mach-types.h>

  
  #include "sa1111_generic.h"

  #include "max1600.h"
  
  static int lubbock_pcmcia_hw_init(struct soc_pcmcia_socket *skt)
  {
  	struct max1600 *m;
  	int ret;
  
  	ret = max1600_init(skt->socket.dev.parent, &m,
  			   skt->nr ? MAX1600_CHAN_B : MAX1600_CHAN_A,
  			   MAX1600_CODE_HIGH);
  	if (ret == 0)
  		skt->driver_data = m;
  
  	return ret;
  }

  
  static int

  lubbock_pcmcia_configure_socket(struct soc_pcmcia_socket *skt,
  				const socket_state_t *state)
  {

  	struct max1600 *m = skt->driver_data;

  	int ret = 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:

  	case 1:

  		break;
  
  	default:
  		ret = -1;
  	}
  
  	if (ret == 0)
  		ret = sa1111_pcmcia_configure_socket(skt, state);

  	if (ret == 0)
  		ret = max1600_configure(m, state->Vcc, state->Vpp);

  
  #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
  			 */

  			max1600_configure(m, 0, 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

  			 * available 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,

  	.configure_socket	= lubbock_pcmcia_configure_socket,

  	.first			= 0,
  	.nr			= 2,
  };
  
  #include "pxa2xx_base.h"

  int pcmcia_lubbock_init(struct sa1111_dev *sadev)

  {

  	pxa2xx_drv_pcmcia_ops(&lubbock_pcmcia_ops);

  	pxa2xx_configure_sockets(&sadev->dev, &lubbock_pcmcia_ops);

  	return sa1111_pcmcia_add(sadev, &lubbock_pcmcia_ops,
  				 pxa2xx_drv_pcmcia_add_one);

  }
  
  MODULE_LICENSE("GPL");