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Message-ID: <20191002080051.11142-2-jckuo@nvidia.com>
Date: Wed, 2 Oct 2019 16:00:46 +0800
From: JC Kuo <jckuo@...dia.com>
To: <gregkh@...uxfoundation.org>, <thierry.reding@...il.com>,
<jonathanh@...dia.com>
CC: <linux-tegra@...r.kernel.org>, <linux-usb@...r.kernel.org>,
<linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>,
<nkristam@...dia.com>, <skomatineni@...dia.com>,
JC Kuo <jckuo@...dia.com>
Subject: [PATCH 1/6] xhci: tegra: Parameterize mailbox register addresses
Tegra194 XUSB host controller has rearranged mailbox registers. This
commit makes mailbox registers address a part of "soc" data so that
xhci-tegra driver can be used for Tegra194.
Signed-off-by: JC Kuo <jckuo@...dia.com>
---
drivers/usb/host/xhci-tegra.c | 58 +++++++++++++++++++++++++----------
1 file changed, 42 insertions(+), 16 deletions(-)
diff --git a/drivers/usb/host/xhci-tegra.c b/drivers/usb/host/xhci-tegra.c
index 2ff7c911fbd0..add6b8fb40e1 100644
--- a/drivers/usb/host/xhci-tegra.c
+++ b/drivers/usb/host/xhci-tegra.c
@@ -42,19 +42,18 @@
#define XUSB_CFG_CSB_BASE_ADDR 0x800
/* FPCI mailbox registers */
-#define XUSB_CFG_ARU_MBOX_CMD 0x0e4
+/* XUSB_CFG_ARU_MBOX_CMD */
#define MBOX_DEST_FALC BIT(27)
#define MBOX_DEST_PME BIT(28)
#define MBOX_DEST_SMI BIT(29)
#define MBOX_DEST_XHCI BIT(30)
#define MBOX_INT_EN BIT(31)
-#define XUSB_CFG_ARU_MBOX_DATA_IN 0x0e8
+/* XUSB_CFG_ARU_MBOX_DATA_IN and XUSB_CFG_ARU_MBOX_DATA_OUT */
#define CMD_DATA_SHIFT 0
#define CMD_DATA_MASK 0xffffff
#define CMD_TYPE_SHIFT 24
#define CMD_TYPE_MASK 0xff
-#define XUSB_CFG_ARU_MBOX_DATA_OUT 0x0ec
-#define XUSB_CFG_ARU_MBOX_OWNER 0x0f0
+/* XUSB_CFG_ARU_MBOX_OWNER */
#define MBOX_OWNER_NONE 0
#define MBOX_OWNER_FW 1
#define MBOX_OWNER_SW 2
@@ -146,6 +145,13 @@ struct tegra_xusb_phy_type {
unsigned int num;
};
+struct tega_xusb_mbox_regs {
+ u16 cmd;
+ u16 data_in;
+ u16 data_out;
+ u16 owner;
+};
+
struct tegra_xusb_soc {
const char *firmware;
const char * const *supply_names;
@@ -160,6 +166,8 @@ struct tegra_xusb_soc {
} usb2, ulpi, hsic, usb3;
} ports;
+ struct tega_xusb_mbox_regs mbox;
+
bool scale_ss_clock;
bool has_ipfs;
};
@@ -395,15 +403,15 @@ static int tegra_xusb_mbox_send(struct tegra_xusb *tegra,
* ACK/NAK messages.
*/
if (!(msg->cmd == MBOX_CMD_ACK || msg->cmd == MBOX_CMD_NAK)) {
- value = fpci_readl(tegra, XUSB_CFG_ARU_MBOX_OWNER);
+ value = fpci_readl(tegra, tegra->soc->mbox.owner);
if (value != MBOX_OWNER_NONE) {
dev_err(tegra->dev, "mailbox is busy\n");
return -EBUSY;
}
- fpci_writel(tegra, MBOX_OWNER_SW, XUSB_CFG_ARU_MBOX_OWNER);
+ fpci_writel(tegra, MBOX_OWNER_SW, tegra->soc->mbox.owner);
- value = fpci_readl(tegra, XUSB_CFG_ARU_MBOX_OWNER);
+ value = fpci_readl(tegra, tegra->soc->mbox.owner);
if (value != MBOX_OWNER_SW) {
dev_err(tegra->dev, "failed to acquire mailbox\n");
return -EBUSY;
@@ -413,17 +421,17 @@ static int tegra_xusb_mbox_send(struct tegra_xusb *tegra,
}
value = tegra_xusb_mbox_pack(msg);
- fpci_writel(tegra, value, XUSB_CFG_ARU_MBOX_DATA_IN);
+ fpci_writel(tegra, value, tegra->soc->mbox.data_in);
- value = fpci_readl(tegra, XUSB_CFG_ARU_MBOX_CMD);
+ value = fpci_readl(tegra, tegra->soc->mbox.cmd);
value |= MBOX_INT_EN | MBOX_DEST_FALC;
- fpci_writel(tegra, value, XUSB_CFG_ARU_MBOX_CMD);
+ fpci_writel(tegra, value, tegra->soc->mbox.cmd);
if (wait_for_idle) {
unsigned long timeout = jiffies + msecs_to_jiffies(250);
while (time_before(jiffies, timeout)) {
- value = fpci_readl(tegra, XUSB_CFG_ARU_MBOX_OWNER);
+ value = fpci_readl(tegra, tegra->soc->mbox.owner);
if (value == MBOX_OWNER_NONE)
break;
@@ -431,7 +439,7 @@ static int tegra_xusb_mbox_send(struct tegra_xusb *tegra,
}
if (time_after(jiffies, timeout))
- value = fpci_readl(tegra, XUSB_CFG_ARU_MBOX_OWNER);
+ value = fpci_readl(tegra, tegra->soc->mbox.owner);
if (value != MBOX_OWNER_NONE)
return -ETIMEDOUT;
@@ -598,16 +606,16 @@ static irqreturn_t tegra_xusb_mbox_thread(int irq, void *data)
mutex_lock(&tegra->lock);
- value = fpci_readl(tegra, XUSB_CFG_ARU_MBOX_DATA_OUT);
+ value = fpci_readl(tegra, tegra->soc->mbox.data_out);
tegra_xusb_mbox_unpack(&msg, value);
- value = fpci_readl(tegra, XUSB_CFG_ARU_MBOX_CMD);
+ value = fpci_readl(tegra, tegra->soc->mbox.cmd);
value &= ~MBOX_DEST_SMI;
- fpci_writel(tegra, value, XUSB_CFG_ARU_MBOX_CMD);
+ fpci_writel(tegra, value, tegra->soc->mbox.cmd);
/* clear mailbox owner if no ACK/NAK is required */
if (!tegra_xusb_mbox_cmd_requires_ack(msg.cmd))
- fpci_writel(tegra, MBOX_OWNER_NONE, XUSB_CFG_ARU_MBOX_OWNER);
+ fpci_writel(tegra, MBOX_OWNER_NONE, tegra->soc->mbox.owner);
tegra_xusb_mbox_handle(tegra, &msg);
@@ -1375,6 +1383,12 @@ static const struct tegra_xusb_soc tegra124_soc = {
},
.scale_ss_clock = true,
.has_ipfs = true,
+ .mbox = {
+ .cmd = 0xe4,
+ .data_in = 0xe8,
+ .data_out = 0xec,
+ .owner = 0xf0,
+ },
};
MODULE_FIRMWARE("nvidia/tegra124/xusb.bin");
@@ -1407,6 +1421,12 @@ static const struct tegra_xusb_soc tegra210_soc = {
},
.scale_ss_clock = false,
.has_ipfs = true,
+ .mbox = {
+ .cmd = 0xe4,
+ .data_in = 0xe8,
+ .data_out = 0xec,
+ .owner = 0xf0,
+ },
};
MODULE_FIRMWARE("nvidia/tegra210/xusb.bin");
@@ -1432,6 +1452,12 @@ static const struct tegra_xusb_soc tegra186_soc = {
},
.scale_ss_clock = false,
.has_ipfs = false,
+ .mbox = {
+ .cmd = 0xe4,
+ .data_in = 0xe8,
+ .data_out = 0xec,
+ .owner = 0xf0,
+ },
};
static const struct of_device_id tegra_xusb_of_match[] = {
--
2.17.1
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