77 lines
1.8 KiB
Diff
77 lines
1.8 KiB
Diff
--- a/arch/mips/ath79/dev-wmac.c
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+++ b/arch/mips/ath79/dev-wmac.c
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@@ -18,9 +18,11 @@
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#include <linux/etherdevice.h>
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#include <linux/platform_device.h>
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#include <linux/ath9k_platform.h>
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+#include <linux/gpio.h>
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#include <asm/mach-ath79/ath79.h>
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#include <asm/mach-ath79/ar71xx_regs.h>
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+#include "common.h"
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#include "dev-wmac.h"
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static u8 ath79_wmac_mac[ETH_ALEN];
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@@ -311,6 +313,51 @@ void __init ath79_wmac_set_tx_gain_buffa
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ath79_wmac_data.tx_gain_buffalo = true;
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}
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+static int ath79_request_ext_lna_gpio(unsigned chain, int gpio)
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+{
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+ char buf[32];
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+ char *label;
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+ int err;
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+
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+ scnprintf(buf, sizeof(buf), "external LNA%u", chain);
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+ label = kstrdup(buf, GFP_KERNEL);
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+
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+ err = gpio_request_one(gpio, GPIOF_DIR_OUT | GPIOF_INIT_LOW, label);
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+ if (err) {
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+ pr_err("unable to request GPIO%d for external LNA%u\n",
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+ gpio, chain);
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+ kfree(label);
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+ }
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+
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+ return err;
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+}
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+
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+static void ar934x_set_ext_lna_gpio(unsigned chain, int gpio)
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+{
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+ unsigned int sel;
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+ int err;
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+
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+ if (WARN_ON(chain > 1))
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+ return;
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+
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+ err = ath79_request_ext_lna_gpio(chain, gpio);
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+ if (err)
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+ return;
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+
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+ if (chain == 0)
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+ sel = AR934X_GPIO_OUT_EXT_LNA0;
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+ else
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+ sel = AR934X_GPIO_OUT_EXT_LNA1;
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+
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+ ath79_gpio_output_select(gpio, sel);
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+}
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+
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+void __init ath79_wmac_set_ext_lna_gpio(unsigned chain, int gpio)
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+{
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+ if (soc_is_ar934x())
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+ ar934x_set_ext_lna_gpio(chain, gpio);
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+}
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+
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void __init ath79_register_wmac(u8 *cal_data, u8 *mac_addr)
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{
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if (soc_is_ar913x())
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--- a/arch/mips/ath79/dev-wmac.h
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+++ b/arch/mips/ath79/dev-wmac.h
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@@ -17,6 +17,7 @@ void ath79_register_wmac_simple(void);
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void ath79_wmac_disable_2ghz(void);
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void ath79_wmac_disable_5ghz(void);
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void ath79_wmac_set_tx_gain_buffalo(void);
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+void ath79_wmac_set_ext_lna_gpio(unsigned chain, int gpio);
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bool ar93xx_wmac_read_mac_address(u8 *dest);
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