Eric Lee / linux-smarc-t335x-v3.2

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Commit 9d01c45e9e9ae6d05bea8229f3d1672034a74187

Authored by Eyal Reizer
Committed by Afzal Mohammed
1 parent 701fba9eeb
Exists in master

board-am335xevm: add platform support for wlan and bluetooth 

* Add pin muxing for wlan and bluetooth
* Initialize mmc2 for working with the wl12xx COM module
* Enable wlan and bluetooth

Signed-off-by: Eyal Reizer <eyalr@ti.com>

Showing 1 changed file with 121 additions and 0 deletions Side-by-side Diff

arch/arm/mach-omap2/board-am335xevm.c
Diff comments   View file @ 9d01c45
... ... @@ -25,6 +25,7 @@
25 25 #include <linux/platform_device.h>
26 26 #include <linux/clk.h>
27 27 #include <linux/err.h>
  28 +#include <linux/wl12xx.h>
28 29  
29 30 /* LCD controller is similar to DA850 */
30 31 #include <video/da8xx-fb.h>
... ... @@ -571,6 +572,42 @@
571 572 {NULL, 0},
572 573 };
573 574  
  575 +#define AM335XEVM_WLAN_PMENA_GPIO GPIO_TO_PIN(1, 30)
  576 +#define AM335XEVM_WLAN_IRQ_GPIO GPIO_TO_PIN(3, 17)
  577 +#define AM335XEVM_BT_ENABLE_GPIO GPIO_TO_PIN(1, 31)
  578 +
  579 +struct wl12xx_platform_data am335xevm_wlan_data __initdata = {
  580 + .irq = OMAP_GPIO_IRQ(AM335XEVM_WLAN_IRQ_GPIO),
  581 + .board_ref_clock = WL12XX_REFCLOCK_26, /* 26 MHz */
  582 + .board_tcxo_clock = WL12XX_REFCLOCK_26, /* 26 MHz */
  583 +};
  584 +
  585 +/* Module pin mux for wlan and bluetooth */
  586 +static struct pinmux_config mmc2_wl12xx_pin_mux[] = {
  587 + {"gpmc_a1.mmc2_dat0", OMAP_MUX_MODE3 | AM33XX_PIN_INPUT_PULLUP},
  588 + {"gpmc_a2.mmc2_dat1", OMAP_MUX_MODE3 | AM33XX_PIN_INPUT_PULLUP},
  589 + {"gpmc_a3.mmc2_dat2", OMAP_MUX_MODE3 | AM33XX_PIN_INPUT_PULLUP},
  590 + {"gpmc_ben1.mmc2_dat3", OMAP_MUX_MODE3 | AM33XX_PIN_INPUT_PULLUP},
  591 + {"gpmc_csn3.mmc2_cmd", OMAP_MUX_MODE3 | AM33XX_PIN_INPUT_PULLUP},
  592 + {"gpmc_clk.mmc2_clk", OMAP_MUX_MODE3 | AM33XX_PIN_INPUT_PULLUP},
  593 + {NULL, 0},
  594 +};
  595 +
  596 +static struct pinmux_config uart1_wl12xx_pin_mux[] = {
  597 + {"uart1_ctsn.uart1_ctsn", OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT},
  598 + {"uart1_rtsn.uart1_rtsn", OMAP_MUX_MODE0 | AM33XX_PIN_INPUT},
  599 + {"uart1_rxd.uart1_rxd", OMAP_MUX_MODE0 | AM33XX_PIN_INPUT_PULLUP},
  600 + {"uart1_txd.uart1_txd", OMAP_MUX_MODE0 | AM33XX_PULL_ENBL},
  601 + {NULL, 0},
  602 +};
  603 +
  604 +static struct pinmux_config wl12xx_pin_mux[] = {
  605 + {"gpmc_csn1.gpio1_30", OMAP_MUX_MODE7 | AM33XX_PIN_OUTPUT},
  606 + {"mcasp0_ahclkr.gpio3_17", OMAP_MUX_MODE7 | AM33XX_PIN_INPUT},
  607 + {"gpmc_csn2.gpio1_31", OMAP_MUX_MODE7 | AM33XX_PIN_OUTPUT},
  608 + {NULL, 0},
  609 + };
  610 +
574 611 static int backlight_enable = false;
575 612  
576 613 static void enable_ecap0(int evm_id, int profile)
... ... @@ -828,6 +865,87 @@
828 865 return;
829 866 }
830 867  
  868 +static void mmc2_wl12xx_init(int evm_id, int profile)
  869 +{
  870 + setup_pin_mux(mmc2_wl12xx_pin_mux);
  871 +
  872 + am335x_mmc[1].mmc = 3;
  873 + am335x_mmc[1].name = "wl1271";
  874 + am335x_mmc[1].caps = MMC_CAP_4_BIT_DATA | MMC_CAP_POWER_OFF_CARD
  875 + | MMC_PM_KEEP_POWER;
  876 + am335x_mmc[1].nonremovable = true;
  877 + am335x_mmc[1].gpio_cd = -EINVAL;
  878 + am335x_mmc[1].gpio_wp = -EINVAL;
  879 + am335x_mmc[1].ocr_mask = MMC_VDD_32_33 | MMC_VDD_33_34; /* 3V3 */
  880 +
  881 + /* mmc will be initialized when mmc0_init is called */
  882 + return;
  883 +}
  884 +
  885 +static void uart1_wl12xx_init(int evm_id, int profile)
  886 +{
  887 + setup_pin_mux(uart1_wl12xx_pin_mux);
  888 +}
  889 +
  890 +static void wl12xx_bluetooth_enable(void)
  891 +{
  892 + int status = gpio_request(AM335XEVM_BT_ENABLE_GPIO, "bt_en\n");
  893 + if (status < 0)
  894 + pr_err("Failed to request gpio for bt_enable");
  895 +
  896 + pr_info("Enable bluetooth...\n");
  897 + gpio_direction_output(AM335XEVM_BT_ENABLE_GPIO, 0);
  898 + msleep(1);
  899 + gpio_set_value(AM335XEVM_BT_ENABLE_GPIO, 1);
  900 +}
  901 +
  902 +static int wl12xx_set_power(struct device *dev, int slot, int on, int vdd)
  903 +{
  904 + if (on)
  905 + gpio_set_value(AM335XEVM_WLAN_PMENA_GPIO, 1);
  906 + else
  907 + gpio_set_value(AM335XEVM_WLAN_PMENA_GPIO, 0);
  908 +
  909 + return 0;
  910 +}
  911 +
  912 +static void wl12xx_init(int evm_id, int profile)
  913 +{
  914 + struct device *dev;
  915 + struct omap_mmc_platform_data *pdata;
  916 + int ret;
  917 +
  918 + wl12xx_bluetooth_enable();
  919 +
  920 + if (wl12xx_set_platform_data(&am335xevm_wlan_data))
  921 + pr_err("error setting wl12xx data\n");
  922 +
  923 + dev = am335x_mmc[1].dev;
  924 + if (!dev) {
  925 + pr_err("wl12xx mmc device initialization failed\n");
  926 + goto out;
  927 + }
  928 +
  929 + pdata = dev->platform_data;
  930 + if (!pdata) {
  931 + pr_err("Platfrom data of wl12xx device not set\n");
  932 + goto out;
  933 + }
  934 +
  935 + ret = gpio_request_one(AM335XEVM_WLAN_PMENA_GPIO, GPIOF_OUT_INIT_LOW,
  936 + "wlan_en");
  937 + if (ret) {
  938 + pr_err("Error requesting wlan enable gpio: %d\n", ret);
  939 + goto out;
  940 + }
  941 +
  942 + setup_pin_mux(wl12xx_pin_mux);
  943 +
  944 + pdata->slots[0].set_power = wl12xx_set_power;
  945 +out:
  946 + return;
  947 +}
  948 +
831 949 static void mmc0_init(int evm_id, int profile)
832 950 {
833 951 setup_pin_mux(mmc0_pin_mux);
834 952  
... ... @@ -891,9 +1009,12 @@
891 1009 {mcasp1_init, DEV_ON_DGHTR_BRD, (PROFILE_0 | PROFILE_3) },
892 1010 {mmc1_init, DEV_ON_DGHTR_BRD, PROFILE_2},
893 1011 {mmc2_init, DEV_ON_DGHTR_BRD, PROFILE_4},
  1012 + {mmc2_wl12xx_init, DEV_ON_BASEBOARD, (PROFILE_ALL & ~PROFILE_4)},
894 1013 {mmc0_init, DEV_ON_BASEBOARD, (PROFILE_ALL & ~PROFILE_5)},
895 1014 {mmc0_no_cd_init, DEV_ON_BASEBOARD, PROFILE_5},
896 1015 {spi0_init, DEV_ON_DGHTR_BRD, PROFILE_2},
  1016 + {uart1_wl12xx_init, DEV_ON_BASEBOARD, PROFILE_ALL},
  1017 + {wl12xx_init, DEV_ON_BASEBOARD, (PROFILE_ALL & ~PROFILE_4)},
897 1018 {NULL, 0, 0},
898 1019 };
899 1020