diff options
Diffstat (limited to 'drivers/pcmcia/sa1100_h3600.c')
| -rw-r--r-- | drivers/pcmcia/sa1100_h3600.c | 163 |
1 files changed, 163 insertions, 0 deletions
diff --git a/drivers/pcmcia/sa1100_h3600.c b/drivers/pcmcia/sa1100_h3600.c new file mode 100644 index 000000000..a91222bc3 --- /dev/null +++ b/drivers/pcmcia/sa1100_h3600.c @@ -0,0 +1,163 @@ +// 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; + + skt->stat[SOC_STAT_CD].name = skt->nr ? "pcmcia1-detect" : "pcmcia0-detect"; + skt->stat[SOC_STAT_RDY].name = skt->nr ? "pcmcia1-ready" : "pcmcia0-ready"; + + err = soc_pcmcia_request_gpiods(skt); + if (err) + return err; + + switch (skt->nr) { + case 0: + 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: + 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; +} + +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; + } +} + +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; +} + +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; +} + +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); +} + +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); + } +} + +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; +} |