--- /dev/null
+Index: backports-2017-11-01/drivers/net/wireless/ath/ath9k/ahb.c
+===================================================================
+--- backports-2017-11-01.orig/drivers/net/wireless/ath/ath9k/ahb.c
++++ backports-2017-11-01/drivers/net/wireless/ath/ath9k/ahb.c
+@@ -19,7 +19,15 @@
+ #include <linux/nl80211.h>
+ #include <linux/platform_device.h>
+ #include <linux/module.h>
++#include <linux/of_device.h>
+ #include "ath9k.h"
++#include <linux/ath9k_platform.h>
++
++#ifdef CONFIG_OF
++#include <asm/mach-ath79/ath79.h>
++#include <asm/mach-ath79/ar71xx_regs.h>
++#include <linux/mtd/mtd.h>
++#endif
+
+ static const struct platform_device_id ath9k_platform_id_table[] = {
+ {
+@@ -68,6 +76,235 @@ static const struct ath_bus_ops ath_ahb_
+ .eeprom_read = ath_ahb_eeprom_read,
+ };
+
++#ifdef CONFIG_OF
++
++#define QCA955X_DDR_CTL_CONFIG 0x108
++#define QCA955X_DDR_CTL_CONFIG_ACT_WMAC BIT(23)
++
++static int of_get_wifi_cal(struct device_node *np, struct ath9k_platform_data *pdata)
++{
++#ifdef CONFIG_MTD
++ struct device_node *mtd_np = NULL;
++ size_t retlen;
++ int size, ret;
++ struct mtd_info *mtd;
++ const char *part;
++ const __be32 *list;
++ phandle phandle;
++
++ list = of_get_property(np, "mtd-cal-data", &size);
++ if (!list)
++ return 0;
++
++ if (size != (2 * sizeof(*list)))
++ return 1;
++
++ phandle = be32_to_cpup(list++);
++ if (phandle)
++ mtd_np = of_find_node_by_phandle(phandle);
++
++ if (!mtd_np)
++ return 1;
++
++ part = of_get_property(mtd_np, "label", NULL);
++ if (!part)
++ part = mtd_np->name;
++
++ mtd = get_mtd_device_nm(part);
++ if (IS_ERR(mtd))
++ return 1;
++
++ ret = mtd_read(mtd, be32_to_cpup(list), sizeof(pdata->eeprom_data),
++ &retlen, (u8*)pdata->eeprom_data);
++ put_mtd_device(mtd);
++
++#endif
++ return 0;
++}
++
++static int ar913x_wmac_reset(void)
++{
++ ath79_device_reset_set(AR913X_RESET_AMBA2WMAC);
++ mdelay(10);
++
++ ath79_device_reset_clear(AR913X_RESET_AMBA2WMAC);
++ mdelay(10);
++
++ return 0;
++}
++
++static int ar933x_wmac_reset(void)
++{
++ int retries = 20;
++
++ ath79_device_reset_set(AR933X_RESET_WMAC);
++ ath79_device_reset_clear(AR933X_RESET_WMAC);
++
++ while (1) {
++ u32 bootstrap;
++
++ bootstrap = ath79_reset_rr(AR933X_RESET_REG_BOOTSTRAP);
++ if ((bootstrap & AR933X_BOOTSTRAP_EEPBUSY) == 0)
++ return 0;
++
++ if (retries-- == 0)
++ break;
++
++ udelay(10000);
++ }
++
++ pr_err("ar933x: WMAC reset timed out");
++ return -ETIMEDOUT;
++}
++
++static int qca955x_wmac_reset(void)
++{
++ int i;
++
++ /* Try to wait for WMAC DDR activity to stop */
++ for (i = 0; i < 10; i++) {
++ if (!(__raw_readl(ath79_ddr_base + QCA955X_DDR_CTL_CONFIG) &
++ QCA955X_DDR_CTL_CONFIG_ACT_WMAC))
++ break;
++
++ udelay(10);
++ }
++
++ ath79_device_reset_set(QCA955X_RESET_RTC);
++ udelay(10);
++ ath79_device_reset_clear(QCA955X_RESET_RTC);
++ udelay(10);
++
++ return 0;
++}
++
++enum {
++ AR913X_WMAC = 0,
++ AR933X_WMAC,
++ AR934X_WMAC,
++ QCA953X_WMAC,
++ QCA955X_WMAC,
++ QCA956X_WMAC,
++};
++
++static int ar9330_get_soc_revision(void)
++{
++ if (ath79_soc_rev == 1)
++ return ath79_soc_rev;
++
++ return 0;
++}
++
++static int ath79_get_soc_revision(void)
++{
++ return ath79_soc_rev;
++}
++
++static const struct of_ath_ahb_data {
++ u16 dev_id;
++ u32 bootstrap_reg;
++ u32 bootstrap_ref;
++
++ int (*soc_revision)(void);
++ int (*wmac_reset)(void);
++} of_ath_ahb_data[] = {
++ [AR913X_WMAC] = {
++ .dev_id = AR5416_AR9100_DEVID,
++ .wmac_reset = ar913x_wmac_reset,
++
++ },
++ [AR933X_WMAC] = {
++ .dev_id = AR9300_DEVID_AR9330,
++ .bootstrap_reg = AR933X_RESET_REG_BOOTSTRAP,
++ .bootstrap_ref = AR933X_BOOTSTRAP_REF_CLK_40,
++ .soc_revision = ar9330_get_soc_revision,
++ .wmac_reset = ar933x_wmac_reset,
++ },
++ [AR934X_WMAC] = {
++ .dev_id = AR9300_DEVID_AR9340,
++ .bootstrap_reg = AR934X_RESET_REG_BOOTSTRAP,
++ .bootstrap_ref = AR934X_BOOTSTRAP_REF_CLK_40,
++ .soc_revision = ath79_get_soc_revision,
++ },
++ [QCA953X_WMAC] = {
++ .dev_id = AR9300_DEVID_AR953X,
++ .bootstrap_reg = QCA953X_RESET_REG_BOOTSTRAP,
++ .bootstrap_ref = QCA953X_BOOTSTRAP_REF_CLK_40,
++ .soc_revision = ath79_get_soc_revision,
++ },
++ [QCA955X_WMAC] = {
++ .dev_id = AR9300_DEVID_QCA955X,
++ .bootstrap_reg = QCA955X_RESET_REG_BOOTSTRAP,
++ .bootstrap_ref = QCA955X_BOOTSTRAP_REF_CLK_40,
++ .wmac_reset = qca955x_wmac_reset,
++ },
++ [QCA956X_WMAC] = {
++ .dev_id = AR9300_DEVID_QCA956X,
++ .bootstrap_reg = QCA956X_RESET_REG_BOOTSTRAP,
++ .bootstrap_ref = QCA956X_BOOTSTRAP_REF_CLK_40,
++ .soc_revision = ath79_get_soc_revision,
++ },
++};
++
++const struct of_device_id of_ath_ahb_match[] = {
++ { .compatible = "qca,ar9130-wmac", .data = &of_ath_ahb_data[AR913X_WMAC] },
++ { .compatible = "qca,ar9330-wmac", .data = &of_ath_ahb_data[AR933X_WMAC] },
++ { .compatible = "qca,ar9340-wmac", .data = &of_ath_ahb_data[AR934X_WMAC] },
++ { .compatible = "qca,qca9530-wmac", .data = &of_ath_ahb_data[QCA953X_WMAC] },
++ { .compatible = "qca,qca9550-wmac", .data = &of_ath_ahb_data[QCA955X_WMAC] },
++ { .compatible = "qca,qca9560-wmac", .data = &of_ath_ahb_data[QCA956X_WMAC] },
++ {},
++};
++MODULE_DEVICE_TABLE(of, of_ath_ahb_match);
++
++static int of_ath_ahb_probe(struct platform_device *pdev)
++{
++ struct ath9k_platform_data *pdata;
++ const struct of_device_id *match;
++ const struct of_ath_ahb_data *data;
++ u8 led_pin;
++
++ match = of_match_device(of_ath_ahb_match, &pdev->dev);
++ data = (const struct of_ath_ahb_data *)match->data;
++
++ pdata = dev_get_platdata(&pdev->dev);
++
++ if (!of_property_read_u8(pdev->dev.of_node, "qca,led-pin", &led_pin))
++ pdata->led_pin = led_pin;
++ else
++ pdata->led_pin = -1;
++
++ if (of_property_read_bool(pdev->dev.of_node, "qca,disable-2ghz"))
++ pdata->disable_2ghz = true;
++
++ if (of_property_read_bool(pdev->dev.of_node, "qca,disable-5ghz"))
++ pdata->disable_5ghz = true;
++
++ if (of_property_read_bool(pdev->dev.of_node, "qca,tx-gain-buffalo"))
++ pdata->tx_gain_buffalo = true;
++
++ if (data->wmac_reset) {
++ data->wmac_reset();
++ pdata->external_reset = data->wmac_reset;
++ }
++
++ if (data->bootstrap_reg && data->bootstrap_ref) {
++ u32 t = ath79_reset_rr(data->bootstrap_reg);
++ if (t & data->bootstrap_ref)
++ pdata->is_clk_25mhz = false;
++ else
++ pdata->is_clk_25mhz = true;
++ }
++
++ pdata->get_mac_revision = data->soc_revision;
++
++ if (of_get_wifi_cal(pdev->dev.of_node, pdata))
++ dev_err(&pdev->dev, "failed to load calibration data from mtd device\n");
++
++ return data->dev_id;
++}
++#endif
++
+ static int ath_ahb_probe(struct platform_device *pdev)
+ {
+ void __iomem *mem;
+@@ -79,6 +316,17 @@ static int ath_ahb_probe(struct platform
+ int ret = 0;
+ struct ath_hw *ah;
+ char hw_name[64];
++ u16 dev_id;
++
++ if (id)
++ dev_id = id->driver_data;
++
++#ifdef CONFIG_OF
++ if (pdev->dev.of_node)
++ pdev->dev.platform_data = devm_kzalloc(&pdev->dev,
++ sizeof(struct ath9k_platform_data),
++ GFP_KERNEL);
++#endif
+
+ if (!dev_get_platdata(&pdev->dev)) {
+ dev_err(&pdev->dev, "no platform data specified\n");
+@@ -121,13 +369,16 @@ static int ath_ahb_probe(struct platform
+ sc->mem = mem;
+ sc->irq = irq;
+
++#ifdef CONFIG_OF
++ dev_id = of_ath_ahb_probe(pdev);
++#endif
+ ret = request_irq(irq, ath_isr, IRQF_SHARED, "ath9k", sc);
+ if (ret) {
+ dev_err(&pdev->dev, "request_irq failed\n");
+ goto err_free_hw;
+ }
+
+- ret = ath9k_init_device(id->driver_data, sc, &ath_ahb_bus_ops);
++ ret = ath9k_init_device(dev_id, sc, &ath_ahb_bus_ops);
+ if (ret) {
+ dev_err(&pdev->dev, "failed to initialize device\n");
+ goto err_irq;
+@@ -158,6 +409,9 @@ static int ath_ahb_remove(struct platfor
+ free_irq(sc->irq, sc);
+ ieee80211_free_hw(sc->hw);
+ }
++#ifdef CONFIG_OF
++ pdev->dev.platform_data = NULL;
++#endif
+
+ return 0;
+ }
+@@ -167,6 +421,9 @@ static struct platform_driver ath_ahb_dr
+ .remove = ath_ahb_remove,
+ .driver = {
+ .name = "ath9k",
++#ifdef CONFIG_OF
++ .of_match_table = of_ath_ahb_match,
++#endif
+ },
+ .id_table = ath9k_platform_id_table,
+ };
+Index: backports-2017-11-01/drivers/net/wireless/ath/ath9k/ath9k.h
+===================================================================
+--- backports-2017-11-01.orig/drivers/net/wireless/ath/ath9k/ath9k.h
++++ backports-2017-11-01/drivers/net/wireless/ath/ath9k/ath9k.h
+@@ -25,6 +25,7 @@
+ #include <linux/time.h>
+ #include <linux/hw_random.h>
+ #include <linux/gpio/driver.h>
++#include <linux/reset.h>
+
+ #include "common.h"
+ #include "debug.h"
+@@ -1023,6 +1024,9 @@ struct ath_softc {
+ struct ath_hw *sc_ah;
+ void __iomem *mem;
+ int irq;
++#ifdef CONFIG_OF
++ struct reset_control *reset;
++#endif
+ spinlock_t sc_serial_rw;
+ spinlock_t sc_pm_lock;
+ spinlock_t sc_pcu_lock;
projects / openwrt / staging / chunkeey.git / commitdiff