From 5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sat, 27 Apr 2024 12:05:51 +0200 Subject: Adding upstream version 5.10.209. Signed-off-by: Daniel Baumann --- drivers/pcmcia/pxa2xx_hx4700.c | 118 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 118 insertions(+) create mode 100644 drivers/pcmcia/pxa2xx_hx4700.c (limited to 'drivers/pcmcia/pxa2xx_hx4700.c') diff --git a/drivers/pcmcia/pxa2xx_hx4700.c b/drivers/pcmcia/pxa2xx_hx4700.c new file mode 100644 index 000000000..87b6a1639 --- /dev/null +++ b/drivers/pcmcia/pxa2xx_hx4700.c @@ -0,0 +1,118 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (C) 2012 Paul Parsons + */ + +#include +#include +#include +#include +#include + +#include +#include + +#include "soc_common.h" + +static struct gpio gpios[] = { + { GPIO114_HX4700_CF_RESET, GPIOF_OUT_INIT_LOW, "CF reset" }, + { EGPIO4_CF_3V3_ON, GPIOF_OUT_INIT_LOW, "CF 3.3V enable" }, +}; + +static int hx4700_pcmcia_hw_init(struct soc_pcmcia_socket *skt) +{ + int ret; + + ret = gpio_request_array(gpios, ARRAY_SIZE(gpios)); + if (ret) + goto out; + + /* + * IRQ type must be set before soc_pcmcia_hw_init() calls request_irq(). + * The asic3 default IRQ type is level trigger low level detect, exactly + * the the signal present on GPIOD4_CF_nCD when a CF card is inserted. + * If the IRQ type is not changed, the asic3 interrupt handler will loop + * repeatedly because it is unable to clear the level trigger interrupt. + */ + irq_set_irq_type(gpio_to_irq(GPIOD4_CF_nCD), IRQ_TYPE_EDGE_BOTH); + + skt->stat[SOC_STAT_CD].gpio = GPIOD4_CF_nCD; + skt->stat[SOC_STAT_CD].name = "PCMCIA CD"; + skt->stat[SOC_STAT_RDY].gpio = GPIO60_HX4700_CF_RNB; + skt->stat[SOC_STAT_RDY].name = "PCMCIA Ready"; + +out: + return ret; +} + +static void hx4700_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt) +{ + gpio_free_array(gpios, ARRAY_SIZE(gpios)); +} + +static void hx4700_pcmcia_socket_state(struct soc_pcmcia_socket *skt, + struct pcmcia_state *state) +{ + state->vs_3v = 1; + state->vs_Xv = 0; +} + +static int hx4700_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, + const socket_state_t *state) +{ + switch (state->Vcc) { + case 0: + gpio_set_value(EGPIO4_CF_3V3_ON, 0); + break; + case 33: + gpio_set_value(EGPIO4_CF_3V3_ON, 1); + break; + default: + printk(KERN_ERR "pcmcia: Unsupported Vcc: %d\n", state->Vcc); + return -EINVAL; + } + + gpio_set_value(GPIO114_HX4700_CF_RESET, (state->flags & SS_RESET) != 0); + + return 0; +} + +static struct pcmcia_low_level hx4700_pcmcia_ops = { + .owner = THIS_MODULE, + .nr = 1, + .hw_init = hx4700_pcmcia_hw_init, + .hw_shutdown = hx4700_pcmcia_hw_shutdown, + .socket_state = hx4700_pcmcia_socket_state, + .configure_socket = hx4700_pcmcia_configure_socket, +}; + +static struct platform_device *hx4700_pcmcia_device; + +static int __init hx4700_pcmcia_init(void) +{ + struct platform_device *pdev; + + if (!machine_is_h4700()) + return -ENODEV; + + pdev = platform_device_register_data(NULL, "pxa2xx-pcmcia", -1, + &hx4700_pcmcia_ops, sizeof(hx4700_pcmcia_ops)); + if (IS_ERR(pdev)) + return PTR_ERR(pdev); + + hx4700_pcmcia_device = pdev; + + return 0; +} + +static void __exit hx4700_pcmcia_exit(void) +{ + platform_device_unregister(hx4700_pcmcia_device); +} + +module_init(hx4700_pcmcia_init); +module_exit(hx4700_pcmcia_exit); + +MODULE_AUTHOR("Paul Parsons "); +MODULE_DESCRIPTION("HP iPAQ hx4700 PCMCIA driver"); +MODULE_LICENSE("GPL"); -- cgit v1.2.3