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115 lines
2.4 KiB
115 lines
2.4 KiB
// SPDX-License-Identifier: GPL-2.0 |
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/* |
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* drivers/pcmcia/sa1100_simpad.c |
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* |
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* PCMCIA implementation routines for simpad |
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* |
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*/ |
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#include <linux/module.h> |
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#include <linux/kernel.h> |
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#include <linux/device.h> |
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#include <linux/init.h> |
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#include <mach/hardware.h> |
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#include <asm/mach-types.h> |
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#include <mach/simpad.h> |
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#include "sa1100_generic.h" |
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static int simpad_pcmcia_hw_init(struct soc_pcmcia_socket *skt) |
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{ |
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simpad_clear_cs3_bit(VCC_3V_EN|VCC_5V_EN|EN0|EN1); |
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skt->stat[SOC_STAT_CD].name = "cf-detect"; |
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skt->stat[SOC_STAT_RDY].name = "cf-ready"; |
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return soc_pcmcia_request_gpiods(skt); |
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} |
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static void simpad_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt) |
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{ |
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/* Disable CF bus: */ |
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/*simpad_set_cs3_bit(PCMCIA_BUFF_DIS);*/ |
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simpad_clear_cs3_bit(PCMCIA_RESET); |
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} |
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static void |
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simpad_pcmcia_socket_state(struct soc_pcmcia_socket *skt, |
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struct pcmcia_state *state) |
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{ |
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long cs3reg = simpad_get_cs3_ro(); |
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/* bvd1 might be cs3reg & PCMCIA_BVD1 */ |
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/* bvd2 might be cs3reg & PCMCIA_BVD2 */ |
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if ((cs3reg & (PCMCIA_VS1|PCMCIA_VS2)) == |
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(PCMCIA_VS1|PCMCIA_VS2)) { |
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state->vs_3v=0; |
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state->vs_Xv=0; |
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} else { |
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state->vs_3v=1; |
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state->vs_Xv=0; |
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} |
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} |
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static int |
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simpad_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, |
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const socket_state_t *state) |
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{ |
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unsigned long flags; |
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local_irq_save(flags); |
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/* Murphy: see table of MIC2562a-1 */ |
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switch (state->Vcc) { |
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case 0: |
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simpad_clear_cs3_bit(VCC_3V_EN|VCC_5V_EN|EN0|EN1); |
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break; |
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case 33: |
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simpad_clear_cs3_bit(VCC_3V_EN|EN1); |
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simpad_set_cs3_bit(VCC_5V_EN|EN0); |
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break; |
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case 50: |
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simpad_clear_cs3_bit(VCC_5V_EN|EN1); |
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simpad_set_cs3_bit(VCC_3V_EN|EN0); |
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break; |
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default: |
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printk(KERN_ERR "%s(): unrecognized Vcc %u\n", |
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__func__, state->Vcc); |
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simpad_clear_cs3_bit(VCC_3V_EN|VCC_5V_EN|EN0|EN1); |
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local_irq_restore(flags); |
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return -1; |
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} |
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local_irq_restore(flags); |
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return 0; |
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} |
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static void simpad_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt) |
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{ |
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simpad_set_cs3_bit(PCMCIA_RESET); |
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} |
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static struct pcmcia_low_level simpad_pcmcia_ops = { |
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.owner = THIS_MODULE, |
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.hw_init = simpad_pcmcia_hw_init, |
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.hw_shutdown = simpad_pcmcia_hw_shutdown, |
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.socket_state = simpad_pcmcia_socket_state, |
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.configure_socket = simpad_pcmcia_configure_socket, |
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.socket_suspend = simpad_pcmcia_socket_suspend, |
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}; |
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int pcmcia_simpad_init(struct device *dev) |
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{ |
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int ret = -ENODEV; |
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if (machine_is_simpad()) |
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ret = sa11xx_drv_pcmcia_probe(dev, &simpad_pcmcia_ops, 1, 1); |
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return ret; |
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}
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