phy: Group vendor specific phy drivers

Adding vendor specific directories in phy to group
phy drivers under their respective vendor umbrella.

Also updated the MAINTAINERS file to reflect the correct
directory structure for phy drivers.

Signed-off-by: Vivek Gautam <vivek.gautam@codeaurora.org>
Acked-by: Heiko Stuebner <heiko@sntech.de>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Krzysztof Kozlowski <krzk@kernel.org>
Acked-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>
Cc: Kishon Vijay Abraham I <kishon@ti.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Geert Uytterhoeven <geert+renesas@glider.be>
Cc: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: Heiko Stuebner <heiko@sntech.de>
Cc: Viresh Kumar <viresh.kumar@linaro.org>
Cc: Maxime Ripard <maxime.ripard@free-electrons.com>
Cc: Chen-Yu Tsai <wens@csie.org>
Cc: Sylwester Nawrocki <s.nawrocki@samsung.com>
Cc: Krzysztof Kozlowski <krzk@kernel.org>
Cc: Jaehoon Chung <jh80.chung@samsung.com>
Cc: Stephen Boyd <stephen.boyd@linaro.org>
Cc: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-arm-msm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: linux-omap@vger.kernel.org
Cc: linux-renesas-soc@vger.kernel.org
Cc: linux-rockchip@lists.infradead.org
Cc: linux-samsung-soc@vger.kernel.org
Cc: linux-usb@vger.kernel.org
Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>

1 files changed, 214 insertions, 0 deletions

diff --git a/drivers/phy/marvell/phy-berlin-usb.c b/drivers/phy/marvell/phy-berlin-usb.c
new file mode 100644
index 000000000000..2017751ede26
--- /dev/null
+++ b/drivers/phy/marvell/phy-berlin-usb.c
@@ -0,0 +1,214 @@
+/*
+ * Copyright (C) 2014 Marvell Technology Group Ltd.
+ *
+ * Antoine Tenart <antoine.tenart@free-electrons.com>
+ * Jisheng Zhang <jszhang@marvell.com>
+ *
+ * This file is licensed under the terms of the GNU General Public
+ * License version 2. This program is licensed "as is" without any
+ * warranty of any kind, whether express or implied.
+ */
+
+#include <linux/io.h>
+#include <linux/module.h>
+#include <linux/of_device.h>
+#include <linux/phy/phy.h>
+#include <linux/platform_device.h>
+#include <linux/reset.h>
+
+#define USB_PHY_PLL		0x04
+#define USB_PHY_PLL_CONTROL	0x08
+#define USB_PHY_TX_CTRL0	0x10
+#define USB_PHY_TX_CTRL1	0x14
+#define USB_PHY_TX_CTRL2	0x18
+#define USB_PHY_RX_CTRL		0x20
+#define USB_PHY_ANALOG		0x34
+
+/* USB_PHY_PLL */
+#define CLK_REF_DIV(x)		((x) << 4)
+#define FEEDBACK_CLK_DIV(x)	((x) << 8)
+
+/* USB_PHY_PLL_CONTROL */
+#define CLK_STABLE		BIT(0)
+#define PLL_CTRL_PIN		BIT(1)
+#define PLL_CTRL_REG		BIT(2)
+#define PLL_ON			BIT(3)
+#define PHASE_OFF_TOL_125	(0x0 << 5)
+#define PHASE_OFF_TOL_250	BIT(5)
+#define KVC0_CALIB		(0x0 << 9)
+#define KVC0_REG_CTRL		BIT(9)
+#define KVC0_HIGH		(0x0 << 10)
+#define KVC0_LOW		(0x3 << 10)
+#define CLK_BLK_EN		BIT(13)
+
+/* USB_PHY_TX_CTRL0 */
+#define EXT_HS_RCAL_EN		BIT(3)
+#define EXT_FS_RCAL_EN		BIT(4)
+#define IMPCAL_VTH_DIV(x)	((x) << 5)
+#define EXT_RS_RCAL_DIV(x)	((x) << 8)
+#define EXT_FS_RCAL_DIV(x)	((x) << 12)
+
+/* USB_PHY_TX_CTRL1 */
+#define TX_VDD15_14		(0x0 << 4)
+#define TX_VDD15_15		BIT(4)
+#define TX_VDD15_16		(0x2 << 4)
+#define TX_VDD15_17		(0x3 << 4)
+#define TX_VDD12_VDD		(0x0 << 6)
+#define TX_VDD12_11		BIT(6)
+#define TX_VDD12_12		(0x2 << 6)
+#define TX_VDD12_13		(0x3 << 6)
+#define LOW_VDD_EN		BIT(8)
+#define TX_OUT_AMP(x)		((x) << 9)
+
+/* USB_PHY_TX_CTRL2 */
+#define TX_CHAN_CTRL_REG(x)	((x) << 0)
+#define DRV_SLEWRATE(x)		((x) << 4)
+#define IMP_CAL_FS_HS_DLY_0	(0x0 << 6)
+#define IMP_CAL_FS_HS_DLY_1	BIT(6)
+#define IMP_CAL_FS_HS_DLY_2	(0x2 << 6)
+#define IMP_CAL_FS_HS_DLY_3	(0x3 << 6)
+#define FS_DRV_EN_MASK(x)	((x) << 8)
+#define HS_DRV_EN_MASK(x)	((x) << 12)
+
+/* USB_PHY_RX_CTRL */
+#define PHASE_FREEZE_DLY_2_CL	(0x0 << 0)
+#define PHASE_FREEZE_DLY_4_CL	BIT(0)
+#define ACK_LENGTH_8_CL		(0x0 << 2)
+#define ACK_LENGTH_12_CL	BIT(2)
+#define ACK_LENGTH_16_CL	(0x2 << 2)
+#define ACK_LENGTH_20_CL	(0x3 << 2)
+#define SQ_LENGTH_3		(0x0 << 4)
+#define SQ_LENGTH_6		BIT(4)
+#define SQ_LENGTH_9		(0x2 << 4)
+#define SQ_LENGTH_12		(0x3 << 4)
+#define DISCON_THRESHOLD_260	(0x0 << 6)
+#define DISCON_THRESHOLD_270	BIT(6)
+#define DISCON_THRESHOLD_280	(0x2 << 6)
+#define DISCON_THRESHOLD_290	(0x3 << 6)
+#define SQ_THRESHOLD(x)		((x) << 8)
+#define LPF_COEF(x)		((x) << 12)
+#define INTPL_CUR_10		(0x0 << 14)
+#define INTPL_CUR_20		BIT(14)
+#define INTPL_CUR_30		(0x2 << 14)
+#define INTPL_CUR_40		(0x3 << 14)
+
+/* USB_PHY_ANALOG */
+#define ANA_PWR_UP		BIT(1)
+#define ANA_PWR_DOWN		BIT(2)
+#define V2I_VCO_RATIO(x)	((x) << 7)
+#define R_ROTATE_90		(0x0 << 10)
+#define R_ROTATE_0		BIT(10)
+#define MODE_TEST_EN		BIT(11)
+#define ANA_TEST_DC_CTRL(x)	((x) << 12)
+
+static const u32 phy_berlin_pll_dividers[] = {
+	/* Berlin 2 */
+	CLK_REF_DIV(0x6) | FEEDBACK_CLK_DIV(0x55),
+	/* Berlin 2CD/Q */
+	CLK_REF_DIV(0xc) | FEEDBACK_CLK_DIV(0x54),
+};
+
+struct phy_berlin_usb_priv {
+	void __iomem		*base;
+	struct reset_control	*rst_ctrl;
+	u32			pll_divider;
+};
+
+static int phy_berlin_usb_power_on(struct phy *phy)
+{
+	struct phy_berlin_usb_priv *priv = phy_get_drvdata(phy);
+
+	reset_control_reset(priv->rst_ctrl);
+
+	writel(priv->pll_divider,
+	       priv->base + USB_PHY_PLL);
+	writel(CLK_STABLE | PLL_CTRL_REG | PHASE_OFF_TOL_250 | KVC0_REG_CTRL |
+	       CLK_BLK_EN, priv->base + USB_PHY_PLL_CONTROL);
+	writel(V2I_VCO_RATIO(0x5) | R_ROTATE_0 | ANA_TEST_DC_CTRL(0x5),
+	       priv->base + USB_PHY_ANALOG);
+	writel(PHASE_FREEZE_DLY_4_CL | ACK_LENGTH_16_CL | SQ_LENGTH_12 |
+	       DISCON_THRESHOLD_260 | SQ_THRESHOLD(0xa) | LPF_COEF(0x2) |
+	       INTPL_CUR_30, priv->base + USB_PHY_RX_CTRL);
+
+	writel(TX_VDD12_13 | TX_OUT_AMP(0x3), priv->base + USB_PHY_TX_CTRL1);
+	writel(EXT_HS_RCAL_EN | IMPCAL_VTH_DIV(0x3) | EXT_RS_RCAL_DIV(0x4),
+	       priv->base + USB_PHY_TX_CTRL0);
+
+	writel(EXT_HS_RCAL_EN | IMPCAL_VTH_DIV(0x3) | EXT_RS_RCAL_DIV(0x4) |
+	       EXT_FS_RCAL_DIV(0x2), priv->base + USB_PHY_TX_CTRL0);
+
+	writel(EXT_HS_RCAL_EN | IMPCAL_VTH_DIV(0x3) | EXT_RS_RCAL_DIV(0x4),
+	       priv->base + USB_PHY_TX_CTRL0);
+	writel(TX_CHAN_CTRL_REG(0xf) | DRV_SLEWRATE(0x3) | IMP_CAL_FS_HS_DLY_3 |
+	       FS_DRV_EN_MASK(0xd), priv->base + USB_PHY_TX_CTRL2);
+
+	return 0;
+}
+
+static const struct phy_ops phy_berlin_usb_ops = {
+	.power_on	= phy_berlin_usb_power_on,
+	.owner		= THIS_MODULE,
+};
+
+static const struct of_device_id phy_berlin_usb_of_match[] = {
+	{
+		.compatible = "marvell,berlin2-usb-phy",
+		.data = &phy_berlin_pll_dividers[0],
+	},
+	{
+		.compatible = "marvell,berlin2cd-usb-phy",
+		.data = &phy_berlin_pll_dividers[1],
+	},
+	{ },
+};
+MODULE_DEVICE_TABLE(of, phy_berlin_usb_of_match);
+
+static int phy_berlin_usb_probe(struct platform_device *pdev)
+{
+	const struct of_device_id *match =
+		of_match_device(phy_berlin_usb_of_match, &pdev->dev);
+	struct phy_berlin_usb_priv *priv;
+	struct resource *res;
+	struct phy *phy;
+	struct phy_provider *phy_provider;
+
+	priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
+	if (!priv)
+		return -ENOMEM;
+
+	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+	priv->base = devm_ioremap_resource(&pdev->dev, res);
+	if (IS_ERR(priv->base))
+		return PTR_ERR(priv->base);
+
+	priv->rst_ctrl = devm_reset_control_get(&pdev->dev, NULL);
+	if (IS_ERR(priv->rst_ctrl))
+		return PTR_ERR(priv->rst_ctrl);
+
+	priv->pll_divider = *((u32 *)match->data);
+
+	phy = devm_phy_create(&pdev->dev, NULL, &phy_berlin_usb_ops);
+	if (IS_ERR(phy)) {
+		dev_err(&pdev->dev, "failed to create PHY\n");
+		return PTR_ERR(phy);
+	}
+
+	phy_set_drvdata(phy, priv);
+
+	phy_provider =
+		devm_of_phy_provider_register(&pdev->dev, of_phy_simple_xlate);
+	return PTR_ERR_OR_ZERO(phy_provider);
+}
+
+static struct platform_driver phy_berlin_usb_driver = {
+	.probe	= phy_berlin_usb_probe,
+	.driver	= {
+		.name		= "phy-berlin-usb",
+		.of_match_table	= phy_berlin_usb_of_match,
+	},
+};
+module_platform_driver(phy_berlin_usb_driver);
+
+MODULE_AUTHOR("Antoine Tenart <antoine.tenart@free-electrons.com>");
+MODULE_DESCRIPTION("Marvell Berlin PHY driver for USB");
+MODULE_LICENSE("GPL");