diff options
Diffstat (limited to 'drivers/pcmcia/pxa2xx_cm_x270.c')
| -rw-r--r-- | drivers/pcmcia/pxa2xx_cm_x270.c | 175 |
1 files changed, 175 insertions, 0 deletions
diff --git a/drivers/pcmcia/pxa2xx_cm_x270.c b/drivers/pcmcia/pxa2xx_cm_x270.c new file mode 100644 index 000000000000..fbf2f3a6984c --- /dev/null +++ b/drivers/pcmcia/pxa2xx_cm_x270.c @@ -0,0 +1,175 @@ +/* + * linux/drivers/pcmcia/pxa/pxa_cm_x270.c + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * Compulab Ltd., 2003, 2007 + * Mike Rapoport <mike@compulab.co.il> + * + */ + +#include <linux/kernel.h> +#include <linux/sched.h> +#include <linux/platform_device.h> +#include <linux/irq.h> +#include <linux/delay.h> + +#include <pcmcia/ss.h> +#include <asm/hardware.h> + +#include <asm/arch/pxa-regs.h> +#include <asm/arch/cm-x270.h> + +#include "soc_common.h" + +static struct pcmcia_irqs irqs[] = { + { 0, PCMCIA_S0_CD_VALID, "PCMCIA0 CD" }, + { 1, PCMCIA_S1_CD_VALID, "PCMCIA1 CD" }, +}; + +static int cmx270_pcmcia_hw_init(struct soc_pcmcia_socket *skt) +{ + GPSR(GPIO48_nPOE) = GPIO_bit(GPIO48_nPOE) | + GPIO_bit(GPIO49_nPWE) | + GPIO_bit(GPIO50_nPIOR) | + GPIO_bit(GPIO51_nPIOW) | + GPIO_bit(GPIO85_nPCE_1) | + GPIO_bit(GPIO54_nPCE_2); + + pxa_gpio_mode(GPIO48_nPOE_MD); + pxa_gpio_mode(GPIO49_nPWE_MD); + pxa_gpio_mode(GPIO50_nPIOR_MD); + pxa_gpio_mode(GPIO51_nPIOW_MD); + pxa_gpio_mode(GPIO85_nPCE_1_MD); + pxa_gpio_mode(GPIO54_nPCE_2_MD); + pxa_gpio_mode(GPIO55_nPREG_MD); + pxa_gpio_mode(GPIO56_nPWAIT_MD); + pxa_gpio_mode(GPIO57_nIOIS16_MD); + + /* Reset signal */ + pxa_gpio_mode(GPIO53_nPCE_2 | GPIO_OUT); + GPCR(GPIO53_nPCE_2) = GPIO_bit(GPIO53_nPCE_2); + + set_irq_type(PCMCIA_S0_CD_VALID, IRQ_TYPE_EDGE_BOTH); + set_irq_type(PCMCIA_S1_CD_VALID, IRQ_TYPE_EDGE_BOTH); + + /* irq's for slots: */ + set_irq_type(PCMCIA_S0_RDYINT, IRQ_TYPE_EDGE_FALLING); + set_irq_type(PCMCIA_S1_RDYINT, IRQ_TYPE_EDGE_FALLING); + + skt->irq = (skt->nr == 0) ? PCMCIA_S0_RDYINT : PCMCIA_S1_RDYINT; + return soc_pcmcia_request_irqs(skt, irqs, ARRAY_SIZE(irqs)); +} + +static void cmx270_pcmcia_shutdown(struct soc_pcmcia_socket *skt) +{ + soc_pcmcia_free_irqs(skt, irqs, ARRAY_SIZE(irqs)); + + set_irq_type(IRQ_TO_GPIO(PCMCIA_S0_CD_VALID), IRQ_TYPE_NONE); + set_irq_type(IRQ_TO_GPIO(PCMCIA_S1_CD_VALID), IRQ_TYPE_NONE); + + set_irq_type(IRQ_TO_GPIO(PCMCIA_S0_RDYINT), IRQ_TYPE_NONE); + set_irq_type(IRQ_TO_GPIO(PCMCIA_S1_RDYINT), IRQ_TYPE_NONE); +} + + +static void cmx270_pcmcia_socket_state(struct soc_pcmcia_socket *skt, + struct pcmcia_state *state) +{ + state->detect = (PCC_DETECT(skt->nr) == 0) ? 1 : 0; + state->ready = (PCC_READY(skt->nr) == 0) ? 0 : 1; + state->bvd1 = 1; + state->bvd2 = 1; + state->vs_3v = 0; + state->vs_Xv = 0; + state->wrprot = 0; /* not available */ +} + + +static int cmx270_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, + const socket_state_t *state) +{ + GPSR(GPIO49_nPWE) = GPIO_bit(GPIO49_nPWE); + pxa_gpio_mode(GPIO49_nPWE | GPIO_OUT); + + switch (skt->nr) { + case 0: + if (state->flags & SS_RESET) { + GPCR(GPIO49_nPWE) = GPIO_bit(GPIO49_nPWE); + GPSR(GPIO53_nPCE_2) = GPIO_bit(GPIO53_nPCE_2); + udelay(10); + GPCR(GPIO53_nPCE_2) = GPIO_bit(GPIO53_nPCE_2); + GPSR(GPIO49_nPWE) = GPIO_bit(GPIO49_nPWE); + } + break; + case 1: + if (state->flags & SS_RESET) { + GPCR(GPIO49_nPWE) = GPIO_bit(GPIO49_nPWE); + GPSR(GPIO53_nPCE_2) = GPIO_bit(GPIO53_nPCE_2); + udelay(10); + GPCR(GPIO53_nPCE_2) = GPIO_bit(GPIO53_nPCE_2); + GPSR(GPIO49_nPWE) = GPIO_bit(GPIO49_nPWE); + } + break; + } + + pxa_gpio_mode(GPIO49_nPWE_MD); + + return 0; +} + +static void cmx270_pcmcia_socket_init(struct soc_pcmcia_socket *skt) +{ +} + +static void cmx270_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt) +{ +} + + +static struct pcmcia_low_level cmx270_pcmcia_ops = { + .owner = THIS_MODULE, + .hw_init = cmx270_pcmcia_hw_init, + .hw_shutdown = cmx270_pcmcia_shutdown, + .socket_state = cmx270_pcmcia_socket_state, + .configure_socket = cmx270_pcmcia_configure_socket, + .socket_init = cmx270_pcmcia_socket_init, + .socket_suspend = cmx270_pcmcia_socket_suspend, + .nr = 2, +}; + +static struct platform_device *cmx270_pcmcia_device; + +static int __init cmx270_pcmcia_init(void) +{ + int ret; + + cmx270_pcmcia_device = platform_device_alloc("pxa2xx-pcmcia", -1); + + if (!cmx270_pcmcia_device) + return -ENOMEM; + + cmx270_pcmcia_device->dev.platform_data = &cmx270_pcmcia_ops; + + printk(KERN_INFO "Registering cm-x270 PCMCIA interface.\n"); + ret = platform_device_add(cmx270_pcmcia_device); + + if (ret) + platform_device_put(cmx270_pcmcia_device); + + return ret; +} + +static void __exit cmx270_pcmcia_exit(void) +{ + platform_device_unregister(cmx270_pcmcia_device); +} + +module_init(cmx270_pcmcia_init); +module_exit(cmx270_pcmcia_exit); + +MODULE_LICENSE("GPL"); +MODULE_AUTHOR("Mike Rapoport <mike@compulab.co.il>"); +MODULE_DESCRIPTION("CM-x270 PCMCIA driver"); |