cregit-Linux how code gets into the kernel

Release 4.14 drivers/pcmcia/sa1100_h3600.c

Directory: drivers/pcmcia
// SPDX-License-Identifier: GPL-2.0
/*
 * drivers/pcmcia/sa1100_h3600.c
 *
 * PCMCIA implementation routines for H3600
 *
 */
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/device.h>
#include <linux/interrupt.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/gpio.h>

#include <mach/hardware.h>
#include <asm/irq.h>
#include <asm/mach-types.h>
#include <mach/h3xxx.h>

#include "sa1100_generic.h"


static int h3600_pcmcia_hw_init(struct soc_pcmcia_socket *skt) { int err; switch (skt->nr) { case 0: skt->stat[SOC_STAT_CD].gpio = H3XXX_GPIO_PCMCIA_CD0; skt->stat[SOC_STAT_CD].name = "PCMCIA CD0"; skt->stat[SOC_STAT_RDY].gpio = H3XXX_GPIO_PCMCIA_IRQ0; skt->stat[SOC_STAT_RDY].name = "PCMCIA IRQ0"; err = gpio_request(H3XXX_EGPIO_OPT_NVRAM_ON, "OPT NVRAM ON"); if (err) goto err01; err = gpio_direction_output(H3XXX_EGPIO_OPT_NVRAM_ON, 0); if (err) goto err03; err = gpio_request(H3XXX_EGPIO_OPT_ON, "OPT ON"); if (err) goto err03; err = gpio_direction_output(H3XXX_EGPIO_OPT_ON, 0); if (err) goto err04; err = gpio_request(H3XXX_EGPIO_OPT_RESET, "OPT RESET"); if (err) goto err04; err = gpio_direction_output(H3XXX_EGPIO_OPT_RESET, 0); if (err) goto err05; err = gpio_request(H3XXX_EGPIO_CARD_RESET, "PCMCIA CARD RESET"); if (err) goto err05; err = gpio_direction_output(H3XXX_EGPIO_CARD_RESET, 0); if (err) goto err06; break; case 1: skt->stat[SOC_STAT_CD].gpio = H3XXX_GPIO_PCMCIA_CD1; skt->stat[SOC_STAT_CD].name = "PCMCIA CD1"; skt->stat[SOC_STAT_RDY].gpio = H3XXX_GPIO_PCMCIA_IRQ1; skt->stat[SOC_STAT_RDY].name = "PCMCIA IRQ1"; break; } return 0; err06: gpio_free(H3XXX_EGPIO_CARD_RESET); err05: gpio_free(H3XXX_EGPIO_OPT_RESET); err04: gpio_free(H3XXX_EGPIO_OPT_ON); err03: gpio_free(H3XXX_EGPIO_OPT_NVRAM_ON); err01: gpio_free(H3XXX_GPIO_PCMCIA_IRQ0); return err; }

Contributors

PersonTokensPropCommitsCommitProp
Dmitry Artamonow20972.82%228.57%
Russell King6823.69%342.86%
Linus Torvalds93.14%114.29%
Nico Pitre10.35%114.29%
Total287100.00%7100.00%


static void h3600_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt) { switch (skt->nr) { case 0: /* Disable CF bus: */ gpio_set_value(H3XXX_EGPIO_OPT_NVRAM_ON, 0); gpio_set_value(H3XXX_EGPIO_OPT_ON, 0); gpio_set_value(H3XXX_EGPIO_OPT_RESET, 1); gpio_free(H3XXX_EGPIO_CARD_RESET); gpio_free(H3XXX_EGPIO_OPT_RESET); gpio_free(H3XXX_EGPIO_OPT_ON); gpio_free(H3XXX_EGPIO_OPT_NVRAM_ON); break; case 1: break; } }

Contributors

PersonTokensPropCommitsCommitProp
Dmitry Artamonow4869.57%342.86%
Linus Torvalds1217.39%114.29%
Russell King811.59%228.57%
Nico Pitre11.45%114.29%
Total69100.00%7100.00%


static void h3600_pcmcia_socket_state(struct soc_pcmcia_socket *skt, struct pcmcia_state *state) { state->bvd1 = 0; state->bvd2 = 0; state->vs_3v = 0; state->vs_Xv = 0; }

Contributors

PersonTokensPropCommitsCommitProp
Linus Torvalds2767.50%120.00%
Russell King1230.00%360.00%
Nico Pitre12.50%120.00%
Total40100.00%5100.00%


static int h3600_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, const socket_state_t *state) { if (state->Vcc != 0 && state->Vcc != 33 && state->Vcc != 50) { printk(KERN_ERR "h3600_pcmcia: unrecognized Vcc %u.%uV\n", state->Vcc / 10, state->Vcc % 10); return -1; } gpio_set_value(H3XXX_EGPIO_CARD_RESET, !!(state->flags & SS_RESET)); /* Silently ignore Vpp, output enable, speaker enable. */ return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Russell King5670.89%342.86%
Linus Torvalds1417.72%114.29%
Dmitry Artamonow810.13%228.57%
Nico Pitre11.27%114.29%
Total79100.00%7100.00%


static void h3600_pcmcia_socket_init(struct soc_pcmcia_socket *skt) { /* Enable CF bus: */ gpio_set_value(H3XXX_EGPIO_OPT_NVRAM_ON, 1); gpio_set_value(H3XXX_EGPIO_OPT_ON, 1); gpio_set_value(H3XXX_EGPIO_OPT_RESET, 0); msleep(10); }

Contributors

PersonTokensPropCommitsCommitProp
Russell King2565.79%350.00%
Dmitry Artamonow1231.58%233.33%
Nico Pitre12.63%116.67%
Total38100.00%6100.00%


static void h3600_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt) { /* * FIXME: This doesn't fit well. We don't have the mechanism in * the generic PCMCIA layer to deal with the idea of two sockets * on one bus. We rely on the cs.c behaviour shutting down * socket 0 then socket 1. */ if (skt->nr == 1) { gpio_set_value(H3XXX_EGPIO_OPT_ON, 0); gpio_set_value(H3XXX_EGPIO_OPT_NVRAM_ON, 0); /* hmm, does this suck power? */ gpio_set_value(H3XXX_EGPIO_OPT_RESET, 1); } }

Contributors

PersonTokensPropCommitsCommitProp
Russell King1840.91%233.33%
Linus Torvalds1329.55%116.67%
Dmitry Artamonow1227.27%233.33%
Nico Pitre12.27%116.67%
Total44100.00%6100.00%

struct pcmcia_low_level h3600_pcmcia_ops = { .owner = THIS_MODULE, .hw_init = h3600_pcmcia_hw_init, .hw_shutdown = h3600_pcmcia_hw_shutdown, .socket_state = h3600_pcmcia_socket_state, .configure_socket = h3600_pcmcia_configure_socket, .socket_init = h3600_pcmcia_socket_init, .socket_suspend = h3600_pcmcia_socket_suspend, };
int pcmcia_h3600_init(struct device *dev) { int ret = -ENODEV; if (machine_is_h3600() || machine_is_h3100()) ret = sa11xx_drv_pcmcia_probe(dev, &h3600_pcmcia_ops, 0, 2); return ret; }

Contributors

PersonTokensPropCommitsCommitProp
Russell King3892.68%375.00%
Dmitry Artamonow37.32%125.00%
Total41100.00%4100.00%


Overall Contributors

PersonTokensPropCommitsCommitProp
Dmitry Artamonow29844.02%526.32%
Russell King27540.62%1157.89%
Linus Torvalds9714.33%15.26%
Nico Pitre60.89%15.26%
Greg Kroah-Hartman10.15%15.26%
Total677100.00%19100.00%
Directory: drivers/pcmcia
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