diff options
| -rw-r--r-- | drivers/pcmcia/soc_common.c | 37 | ||||
| -rw-r--r-- | drivers/pcmcia/soc_common.h | 11 |
2 files changed, 47 insertions, 1 deletions
diff --git a/drivers/pcmcia/soc_common.c b/drivers/pcmcia/soc_common.c index 6d0ec291f475..15e332aca0f3 100644 --- a/drivers/pcmcia/soc_common.c +++ b/drivers/pcmcia/soc_common.c @@ -43,6 +43,7 @@ #include <linux/module.h> #include <linux/moduleparam.h> #include <linux/mutex.h> +#include <linux/regulator/consumer.h> #include <linux/spinlock.h> #include <linux/timer.h> @@ -80,6 +81,41 @@ EXPORT_SYMBOL(soc_pcmcia_debug); #define to_soc_pcmcia_socket(x) \ container_of(x, struct soc_pcmcia_socket, socket) +int soc_pcmcia_regulator_set(struct soc_pcmcia_socket *skt, + struct soc_pcmcia_regulator *r, int v) +{ + bool on; + int ret; + + if (!r->reg) + return 0; + + on = v != 0; + if (r->on == on) + return 0; + + if (on) { + ret = regulator_set_voltage(r->reg, v * 100000, v * 100000); + if (ret) { + int vout = regulator_get_voltage(r->reg) / 100000; + + dev_warn(&skt->socket.dev, + "CS requested %s=%u.%uV, applying %u.%uV\n", + r == &skt->vcc ? "Vcc" : "Vpp", + v / 10, v % 10, vout / 10, vout % 10); + } + + ret = regulator_enable(r->reg); + } else { + regulator_disable(r->reg); + } + if (ret == 0) + r->on = on; + + return ret; +} +EXPORT_SYMBOL_GPL(soc_pcmcia_regulator_set); + static unsigned short calc_speed(unsigned short *spds, int num, unsigned short dflt) { @@ -119,7 +155,6 @@ static void __soc_pcmcia_hw_shutdown(struct soc_pcmcia_socket *skt, if (skt->ops->hw_shutdown) skt->ops->hw_shutdown(skt); - clk_disable_unprepare(skt->clk); } diff --git a/drivers/pcmcia/soc_common.h b/drivers/pcmcia/soc_common.h index 39c1e15167f3..18a6df5ca374 100644 --- a/drivers/pcmcia/soc_common.h +++ b/drivers/pcmcia/soc_common.h @@ -19,6 +19,12 @@ struct device; struct gpio_desc; struct pcmcia_low_level; +struct regulator; + +struct soc_pcmcia_regulator { + struct regulator *reg; + bool on; +}; /* * This structure encapsulates per-socket state which we might need to @@ -64,6 +70,8 @@ struct soc_pcmcia_socket { struct gpio_desc *gpio_reset; struct gpio_desc *gpio_bus_enable; + struct soc_pcmcia_regulator vcc; + struct soc_pcmcia_regulator vpp; unsigned int irq_state; @@ -146,6 +154,9 @@ int soc_pcmcia_request_gpiods(struct soc_pcmcia_socket *skt); void soc_common_cf_socket_state(struct soc_pcmcia_socket *skt, struct pcmcia_state *state); +int soc_pcmcia_regulator_set(struct soc_pcmcia_socket *skt, + struct soc_pcmcia_regulator *r, int v); + #ifdef CONFIG_PCMCIA_DEBUG extern void soc_pcmcia_debug(struct soc_pcmcia_socket *skt, const char *func, |