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Release 4.14 drivers/pcmcia/pxa2xx_mainstone.c

Directory: drivers/pcmcia
/*
 * linux/drivers/pcmcia/pxa2xx_mainstone.c
 *
 * Mainstone PCMCIA specific routines.
 *
 * Created:     May 12, 2004
 * Author:      Nicolas Pitre
 * 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.
 */

#include <linux/module.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/interrupt.h>
#include <linux/platform_device.h>

#include <pcmcia/ss.h>

#include <asm/mach-types.h>
#include <asm/irq.h>

#include <mach/pxa2xx-regs.h>
#include <mach/mainstone.h>

#include "soc_common.h"



static int mst_pcmcia_hw_init(struct soc_pcmcia_socket *skt) { /* * Setup default state of GPIO outputs * before we enable them as outputs. */ if (skt->nr == 0) { skt->socket.pci_irq = MAINSTONE_S0_IRQ; skt->stat[SOC_STAT_CD].irq = MAINSTONE_S0_CD_IRQ; skt->stat[SOC_STAT_CD].name = "PCMCIA0 CD"; skt->stat[SOC_STAT_BVD1].irq = MAINSTONE_S0_STSCHG_IRQ; skt->stat[SOC_STAT_BVD1].name = "PCMCIA0 STSCHG"; } else { skt->socket.pci_irq = MAINSTONE_S1_IRQ; skt->stat[SOC_STAT_CD].irq = MAINSTONE_S1_CD_IRQ; skt->stat[SOC_STAT_CD].name = "PCMCIA1 CD"; skt->stat[SOC_STAT_BVD1].irq = MAINSTONE_S1_STSCHG_IRQ; skt->stat[SOC_STAT_BVD1].name = "PCMCIA1 STSCHG"; } return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Russell King10982.58%250.00%
Nico Pitre2317.42%250.00%
Total132100.00%4100.00%

static unsigned long mst_pcmcia_status[2];
static void mst_pcmcia_socket_state(struct soc_pcmcia_socket *skt, struct pcmcia_state *state) { unsigned long status, flip; status = (skt->nr == 0) ? MST_PCMCIA0 : MST_PCMCIA1; flip = (status ^ mst_pcmcia_status[skt->nr]) & MST_PCMCIA_nSTSCHG_BVD1; /* * Workaround for STSCHG which can't be deasserted: * We therefore disable/enable corresponding IRQs * as needed to avoid IRQ locks. */ if (flip) { mst_pcmcia_status[skt->nr] = status; if (status & MST_PCMCIA_nSTSCHG_BVD1) enable_irq( (skt->nr == 0) ? MAINSTONE_S0_STSCHG_IRQ : MAINSTONE_S1_STSCHG_IRQ ); else disable_irq( (skt->nr == 0) ? MAINSTONE_S0_STSCHG_IRQ : MAINSTONE_S1_STSCHG_IRQ ); } state->detect = (status & MST_PCMCIA_nCD) ? 0 : 1; state->ready = (status & MST_PCMCIA_nIRQ) ? 1 : 0; state->bvd1 = (status & MST_PCMCIA_nSTSCHG_BVD1) ? 1 : 0; state->bvd2 = (status & MST_PCMCIA_nSPKR_BVD2) ? 1 : 0; state->vs_3v = (status & MST_PCMCIA_nVS1) ? 0 : 1; state->vs_Xv = (status & MST_PCMCIA_nVS2) ? 0 : 1; }

Contributors

PersonTokensPropCommitsCommitProp
Nico Pitre188100.00%1100.00%
Total188100.00%1100.00%


static int mst_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, const socket_state_t *state) { unsigned long power = 0; int ret = 0; switch (state->Vcc) { case 0: power |= MST_PCMCIA_PWR_VCC_0; break; case 33: power |= MST_PCMCIA_PWR_VCC_33; break; case 50: power |= MST_PCMCIA_PWR_VCC_50; break; default: printk(KERN_ERR "%s(): bad Vcc %u\n", __func__, state->Vcc); ret = -1; } switch (state->Vpp) { case 0: power |= MST_PCMCIA_PWR_VPP_0; break; case 120: power |= MST_PCMCIA_PWR_VPP_120; break; default: if(state->Vpp == state->Vcc) { power |= MST_PCMCIA_PWR_VPP_VCC; } else { printk(KERN_ERR "%s(): bad Vpp %u\n", __func__, state->Vpp); ret = -1; } } if (state->flags & SS_RESET) power |= MST_PCMCIA_RESET; switch (skt->nr) { case 0: MST_PCMCIA0 = power; break; case 1: MST_PCMCIA1 = power; break; default: ret = -1; } return ret; }

Contributors

PersonTokensPropCommitsCommitProp
Nico Pitre18198.91%150.00%
Harvey Harrison21.09%150.00%
Total183100.00%2100.00%

static struct pcmcia_low_level mst_pcmcia_ops __initdata = { .owner = THIS_MODULE, .hw_init = mst_pcmcia_hw_init, .socket_state = mst_pcmcia_socket_state, .configure_socket = mst_pcmcia_configure_socket, .nr = 2, }; static struct platform_device *mst_pcmcia_device;
static int __init mst_pcmcia_init(void) { int ret; if (!machine_is_mainstone()) return -ENODEV; mst_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1); if (!mst_pcmcia_device) return -ENOMEM; ret = platform_device_add_data(mst_pcmcia_device, &mst_pcmcia_ops, sizeof(mst_pcmcia_ops)); if (ret == 0) ret = platform_device_add(mst_pcmcia_device); if (ret) platform_device_put(mst_pcmcia_device); return ret; }

Contributors

PersonTokensPropCommitsCommitProp
Nico Pitre4859.26%125.00%
Russell King2733.33%250.00%
Richard Purdie67.41%125.00%
Total81100.00%4100.00%


static void __exit mst_pcmcia_exit(void) { platform_device_unregister(mst_pcmcia_device); }

Contributors

PersonTokensPropCommitsCommitProp
Nico Pitre14100.00%1100.00%
Total14100.00%1100.00%

fs_initcall(mst_pcmcia_init); module_exit(mst_pcmcia_exit); MODULE_LICENSE("GPL"); MODULE_ALIAS("platform:pxa2xx-pcmcia");

Overall Contributors

PersonTokensPropCommitsCommitProp
Nico Pitre54577.64%426.67%
Russell King14220.23%640.00%
Richard Purdie71.00%213.33%
Kay Sievers50.71%16.67%
Harvey Harrison20.28%16.67%
Eric Miao10.14%16.67%
Total702100.00%15100.00%
Directory: drivers/pcmcia
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