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163 lines
3.9 KiB
163 lines
3.9 KiB
// SPDX-License-Identifier: GPL-2.0 |
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/* |
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* drivers/pcmcia/sa1100_h3600.c |
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* |
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* PCMCIA implementation routines for H3600 |
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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/interrupt.h> |
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#include <linux/init.h> |
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#include <linux/delay.h> |
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#include <linux/gpio.h> |
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#include <mach/hardware.h> |
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#include <asm/irq.h> |
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#include <asm/mach-types.h> |
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#include <mach/h3xxx.h> |
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#include "sa1100_generic.h" |
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static int h3600_pcmcia_hw_init(struct soc_pcmcia_socket *skt) |
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{ |
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int err; |
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skt->stat[SOC_STAT_CD].name = skt->nr ? "pcmcia1-detect" : "pcmcia0-detect"; |
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skt->stat[SOC_STAT_RDY].name = skt->nr ? "pcmcia1-ready" : "pcmcia0-ready"; |
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err = soc_pcmcia_request_gpiods(skt); |
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if (err) |
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return err; |
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switch (skt->nr) { |
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case 0: |
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err = gpio_request(H3XXX_EGPIO_OPT_NVRAM_ON, "OPT NVRAM ON"); |
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if (err) |
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goto err01; |
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err = gpio_direction_output(H3XXX_EGPIO_OPT_NVRAM_ON, 0); |
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if (err) |
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goto err03; |
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err = gpio_request(H3XXX_EGPIO_OPT_ON, "OPT ON"); |
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if (err) |
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goto err03; |
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err = gpio_direction_output(H3XXX_EGPIO_OPT_ON, 0); |
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if (err) |
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goto err04; |
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err = gpio_request(H3XXX_EGPIO_OPT_RESET, "OPT RESET"); |
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if (err) |
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goto err04; |
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err = gpio_direction_output(H3XXX_EGPIO_OPT_RESET, 0); |
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if (err) |
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goto err05; |
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err = gpio_request(H3XXX_EGPIO_CARD_RESET, "PCMCIA CARD RESET"); |
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if (err) |
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goto err05; |
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err = gpio_direction_output(H3XXX_EGPIO_CARD_RESET, 0); |
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if (err) |
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goto err06; |
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break; |
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case 1: |
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break; |
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} |
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return 0; |
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err06: gpio_free(H3XXX_EGPIO_CARD_RESET); |
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err05: gpio_free(H3XXX_EGPIO_OPT_RESET); |
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err04: gpio_free(H3XXX_EGPIO_OPT_ON); |
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err03: gpio_free(H3XXX_EGPIO_OPT_NVRAM_ON); |
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err01: gpio_free(H3XXX_GPIO_PCMCIA_IRQ0); |
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return err; |
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} |
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static void h3600_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt) |
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{ |
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switch (skt->nr) { |
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case 0: |
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/* Disable CF bus: */ |
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gpio_set_value(H3XXX_EGPIO_OPT_NVRAM_ON, 0); |
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gpio_set_value(H3XXX_EGPIO_OPT_ON, 0); |
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gpio_set_value(H3XXX_EGPIO_OPT_RESET, 1); |
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gpio_free(H3XXX_EGPIO_CARD_RESET); |
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gpio_free(H3XXX_EGPIO_OPT_RESET); |
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gpio_free(H3XXX_EGPIO_OPT_ON); |
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gpio_free(H3XXX_EGPIO_OPT_NVRAM_ON); |
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break; |
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case 1: |
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break; |
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} |
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} |
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static void |
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h3600_pcmcia_socket_state(struct soc_pcmcia_socket *skt, struct pcmcia_state *state) |
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{ |
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state->bvd1 = 0; |
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state->bvd2 = 0; |
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state->vs_3v = 0; |
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state->vs_Xv = 0; |
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} |
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static int |
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h3600_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, const socket_state_t *state) |
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{ |
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if (state->Vcc != 0 && state->Vcc != 33 && state->Vcc != 50) { |
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printk(KERN_ERR "h3600_pcmcia: unrecognized Vcc %u.%uV\n", |
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state->Vcc / 10, state->Vcc % 10); |
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return -1; |
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} |
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gpio_set_value(H3XXX_EGPIO_CARD_RESET, !!(state->flags & SS_RESET)); |
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/* Silently ignore Vpp, output enable, speaker enable. */ |
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return 0; |
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} |
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static void h3600_pcmcia_socket_init(struct soc_pcmcia_socket *skt) |
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{ |
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/* Enable CF bus: */ |
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gpio_set_value(H3XXX_EGPIO_OPT_NVRAM_ON, 1); |
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gpio_set_value(H3XXX_EGPIO_OPT_ON, 1); |
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gpio_set_value(H3XXX_EGPIO_OPT_RESET, 0); |
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msleep(10); |
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} |
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static void h3600_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt) |
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{ |
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/* |
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* FIXME: This doesn't fit well. We don't have the mechanism in |
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* the generic PCMCIA layer to deal with the idea of two sockets |
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* on one bus. We rely on the cs.c behaviour shutting down |
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* socket 0 then socket 1. |
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*/ |
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if (skt->nr == 1) { |
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gpio_set_value(H3XXX_EGPIO_OPT_ON, 0); |
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gpio_set_value(H3XXX_EGPIO_OPT_NVRAM_ON, 0); |
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/* hmm, does this suck power? */ |
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gpio_set_value(H3XXX_EGPIO_OPT_RESET, 1); |
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} |
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} |
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struct pcmcia_low_level h3600_pcmcia_ops = { |
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.owner = THIS_MODULE, |
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.hw_init = h3600_pcmcia_hw_init, |
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.hw_shutdown = h3600_pcmcia_hw_shutdown, |
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.socket_state = h3600_pcmcia_socket_state, |
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.configure_socket = h3600_pcmcia_configure_socket, |
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.socket_init = h3600_pcmcia_socket_init, |
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.socket_suspend = h3600_pcmcia_socket_suspend, |
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}; |
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int pcmcia_h3600_init(struct device *dev) |
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{ |
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int ret = -ENODEV; |
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if (machine_is_h3600() || machine_is_h3100()) |
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ret = sa11xx_drv_pcmcia_probe(dev, &h3600_pcmcia_ops, 0, 2); |
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return ret; |
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}
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