diff options
author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
---|---|---|
committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
commit | 2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch) | |
tree | 848558de17fb3008cdf4d861b01ac7781903ce39 /drivers/pcmcia/sa1100_simpad.c | |
parent | Initial commit. (diff) | |
download | linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip |
Adding upstream version 6.1.76.upstream/6.1.76upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | drivers/pcmcia/sa1100_simpad.c | 115 |
1 files changed, 115 insertions, 0 deletions
diff --git a/drivers/pcmcia/sa1100_simpad.c b/drivers/pcmcia/sa1100_simpad.c new file mode 100644 index 000000000..784ada5b8 --- /dev/null +++ b/drivers/pcmcia/sa1100_simpad.c @@ -0,0 +1,115 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * drivers/pcmcia/sa1100_simpad.c + * + * PCMCIA implementation routines for simpad + * + */ +#include <linux/module.h> +#include <linux/kernel.h> +#include <linux/device.h> +#include <linux/init.h> + +#include <mach/hardware.h> +#include <asm/mach-types.h> +#include <mach/simpad.h> +#include "sa1100_generic.h" + +static int simpad_pcmcia_hw_init(struct soc_pcmcia_socket *skt) +{ + + simpad_clear_cs3_bit(VCC_3V_EN|VCC_5V_EN|EN0|EN1); + + skt->stat[SOC_STAT_CD].name = "cf-detect"; + skt->stat[SOC_STAT_RDY].name = "cf-ready"; + + return soc_pcmcia_request_gpiods(skt); +} + +static void simpad_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt) +{ + /* Disable CF bus: */ + /*simpad_set_cs3_bit(PCMCIA_BUFF_DIS);*/ + simpad_clear_cs3_bit(PCMCIA_RESET); +} + +static void +simpad_pcmcia_socket_state(struct soc_pcmcia_socket *skt, + struct pcmcia_state *state) +{ + long cs3reg = simpad_get_cs3_ro(); + + /* bvd1 might be cs3reg & PCMCIA_BVD1 */ + /* bvd2 might be cs3reg & PCMCIA_BVD2 */ + + if ((cs3reg & (PCMCIA_VS1|PCMCIA_VS2)) == + (PCMCIA_VS1|PCMCIA_VS2)) { + state->vs_3v=0; + state->vs_Xv=0; + } else { + state->vs_3v=1; + state->vs_Xv=0; + } +} + +static int +simpad_pcmcia_configure_socket(struct soc_pcmcia_socket *skt, + const socket_state_t *state) +{ + unsigned long flags; + + local_irq_save(flags); + + /* Murphy: see table of MIC2562a-1 */ + switch (state->Vcc) { + case 0: + simpad_clear_cs3_bit(VCC_3V_EN|VCC_5V_EN|EN0|EN1); + break; + + case 33: + simpad_clear_cs3_bit(VCC_3V_EN|EN1); + simpad_set_cs3_bit(VCC_5V_EN|EN0); + break; + + case 50: + simpad_clear_cs3_bit(VCC_5V_EN|EN1); + simpad_set_cs3_bit(VCC_3V_EN|EN0); + break; + + default: + printk(KERN_ERR "%s(): unrecognized Vcc %u\n", + __func__, state->Vcc); + simpad_clear_cs3_bit(VCC_3V_EN|VCC_5V_EN|EN0|EN1); + local_irq_restore(flags); + return -1; + } + + + local_irq_restore(flags); + + return 0; +} + +static void simpad_pcmcia_socket_suspend(struct soc_pcmcia_socket *skt) +{ + simpad_set_cs3_bit(PCMCIA_RESET); +} + +static struct pcmcia_low_level simpad_pcmcia_ops = { + .owner = THIS_MODULE, + .hw_init = simpad_pcmcia_hw_init, + .hw_shutdown = simpad_pcmcia_hw_shutdown, + .socket_state = simpad_pcmcia_socket_state, + .configure_socket = simpad_pcmcia_configure_socket, + .socket_suspend = simpad_pcmcia_socket_suspend, +}; + +int pcmcia_simpad_init(struct device *dev) +{ + int ret = -ENODEV; + + if (machine_is_simpad()) + ret = sa11xx_drv_pcmcia_probe(dev, &simpad_pcmcia_ops, 1, 1); + + return ret; +} |