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path: root/drivers/usb/host/ohci-nxp.c
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Diffstat (limited to 'drivers/usb/host/ohci-nxp.c')
-rw-r--r--drivers/usb/host/ohci-nxp.c173
1 files changed, 50 insertions, 123 deletions
diff --git a/drivers/usb/host/ohci-nxp.c b/drivers/usb/host/ohci-nxp.c
index 6618de1d881d..1e364ec962fb 100644
--- a/drivers/usb/host/ohci-nxp.c
+++ b/drivers/usb/host/ohci-nxp.c
@@ -22,6 +22,8 @@
#include <linux/clk.h>
#include <linux/platform_device.h>
#include <linux/i2c.h>
+#include <linux/of.h>
+#include <linux/usb/isp1301.h>
#include <mach/hardware.h>
#include <asm/mach-types.h>
@@ -29,7 +31,6 @@
#include <mach/platform.h>
#include <mach/irqs.h>
-#include <asm/gpio.h>
#define USB_CONFIG_BASE 0x31020000
#define PWRMAN_BASE 0x40004000
@@ -38,7 +39,9 @@
/* USB_CTRL bit defines */
#define USB_SLAVE_HCLK_EN (1 << 24)
+#define USB_DEV_NEED_CLK_EN (1 << 22)
#define USB_HOST_NEED_CLK_EN (1 << 21)
+#define PAD_CONTROL_LAST_DRIVEN (1 << 19)
#define USB_OTG_CLK_CTRL IO_ADDRESS(USB_CONFIG_BASE + 0xFF4)
#define USB_OTG_CLK_STAT IO_ADDRESS(USB_CONFIG_BASE + 0xFF8)
@@ -56,54 +59,6 @@
#define TRANSPARENT_I2C_EN (1 << 7)
#define HOST_EN (1 << 0)
-/* ISP1301 USB transceiver I2C registers */
-#define ISP1301_MODE_CONTROL_1 0x04 /* u8 read, set, +1 clear */
-
-#define MC1_SPEED_REG (1 << 0)
-#define MC1_SUSPEND_REG (1 << 1)
-#define MC1_DAT_SE0 (1 << 2)
-#define MC1_TRANSPARENT (1 << 3)
-#define MC1_BDIS_ACON_EN (1 << 4)
-#define MC1_OE_INT_EN (1 << 5)
-#define MC1_UART_EN (1 << 6)
-#define MC1_MASK 0x7f
-
-#define ISP1301_MODE_CONTROL_2 0x12 /* u8 read, set, +1 clear */
-
-#define MC2_GLOBAL_PWR_DN (1 << 0)
-#define MC2_SPD_SUSP_CTRL (1 << 1)
-#define MC2_BI_DI (1 << 2)
-#define MC2_TRANSP_BDIR0 (1 << 3)
-#define MC2_TRANSP_BDIR1 (1 << 4)
-#define MC2_AUDIO_EN (1 << 5)
-#define MC2_PSW_EN (1 << 6)
-#define MC2_EN2V7 (1 << 7)
-
-#define ISP1301_OTG_CONTROL_1 0x06 /* u8 read, set, +1 clear */
-# define OTG1_DP_PULLUP (1 << 0)
-# define OTG1_DM_PULLUP (1 << 1)
-# define OTG1_DP_PULLDOWN (1 << 2)
-# define OTG1_DM_PULLDOWN (1 << 3)
-# define OTG1_ID_PULLDOWN (1 << 4)
-# define OTG1_VBUS_DRV (1 << 5)
-# define OTG1_VBUS_DISCHRG (1 << 6)
-# define OTG1_VBUS_CHRG (1 << 7)
-#define ISP1301_OTG_STATUS 0x10 /* u8 readonly */
-# define OTG_B_SESS_END (1 << 6)
-# define OTG_B_SESS_VLD (1 << 7)
-
-#define ISP1301_I2C_ADDR 0x2C
-
-#define ISP1301_I2C_MODE_CONTROL_1 0x4
-#define ISP1301_I2C_MODE_CONTROL_2 0x12
-#define ISP1301_I2C_OTG_CONTROL_1 0x6
-#define ISP1301_I2C_OTG_CONTROL_2 0x10
-#define ISP1301_I2C_INTERRUPT_SOURCE 0x8
-#define ISP1301_I2C_INTERRUPT_LATCH 0xA
-#define ISP1301_I2C_INTERRUPT_FALLING 0xC
-#define ISP1301_I2C_INTERRUPT_RISING 0xE
-#define ISP1301_I2C_REG_CLEAR_ADDR 1
-
/* On LPC32xx, those are undefined */
#ifndef start_int_set_falling_edge
#define start_int_set_falling_edge(irq)
@@ -113,42 +68,12 @@
#define start_int_umask(irq)
#endif
-static struct i2c_driver isp1301_driver;
static struct i2c_client *isp1301_i2c_client;
extern int usb_disabled(void);
-extern int ocpi_enable(void);
static struct clk *usb_clk;
-static const unsigned short normal_i2c[] =
- { ISP1301_I2C_ADDR, ISP1301_I2C_ADDR + 1, I2C_CLIENT_END };
-
-static int isp1301_probe(struct i2c_client *client,
- const struct i2c_device_id *id)
-{
- return 0;
-}
-
-static int isp1301_remove(struct i2c_client *client)
-{
- return 0;
-}
-
-static const struct i2c_device_id isp1301_id[] = {
- { "isp1301_nxp", 0 },
- { }
-};
-
-static struct i2c_driver isp1301_driver = {
- .driver = {
- .name = "isp1301_nxp",
- },
- .probe = isp1301_probe,
- .remove = isp1301_remove,
- .id_table = isp1301_id,
-};
-
static void isp1301_configure_pnx4008(void)
{
/* PNX4008 only supports DAT_SE0 USB mode */
@@ -220,7 +145,7 @@ static void isp1301_configure_lpc32xx(void)
ISP1301_I2C_INTERRUPT_RISING | ISP1301_I2C_REG_CLEAR_ADDR, ~0);
/* Enable usb_need_clk clock after transceiver is initialized */
- __raw_writel((__raw_readl(USB_CTRL) | (1 << 22)), USB_CTRL);
+ __raw_writel(__raw_readl(USB_CTRL) | USB_HOST_NEED_CLK_EN, USB_CTRL);
printk(KERN_INFO "ISP1301 Vendor ID : 0x%04x\n",
i2c_smbus_read_word_data(isp1301_i2c_client, 0x00));
@@ -372,65 +297,55 @@ static int __devinit usb_hcd_nxp_probe(struct platform_device *pdev)
struct usb_hcd *hcd = 0;
struct ohci_hcd *ohci;
const struct hc_driver *driver = &ohci_nxp_hc_driver;
- struct i2c_adapter *i2c_adap;
- struct i2c_board_info i2c_info;
-
+ struct resource *res;
int ret = 0, irq;
+ struct device_node *isp1301_node;
- dev_dbg(&pdev->dev, "%s: " DRIVER_DESC " (nxp)\n", hcd_name);
- if (usb_disabled()) {
- err("USB is disabled");
- ret = -ENODEV;
- goto out;
+ if (pdev->dev.of_node) {
+ isp1301_node = of_parse_phandle(pdev->dev.of_node,
+ "transceiver", 0);
+ } else {
+ isp1301_node = NULL;
}
- if (pdev->num_resources != 2
- || pdev->resource[0].flags != IORESOURCE_MEM
- || pdev->resource[1].flags != IORESOURCE_IRQ) {
- err("Invalid resource configuration");
- ret = -ENODEV;
+ isp1301_i2c_client = isp1301_get_client(isp1301_node);
+ if (!isp1301_i2c_client) {
+ ret = -EPROBE_DEFER;
goto out;
}
- /* Enable AHB slave USB clock, needed for further USB clock control */
- __raw_writel(USB_SLAVE_HCLK_EN | (1 << 19), USB_CTRL);
+ pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
+ pdev->dev.dma_mask = &pdev->dev.coherent_dma_mask;
- ret = i2c_add_driver(&isp1301_driver);
- if (ret < 0) {
- err("failed to add ISP1301 driver");
- goto out;
- }
- i2c_adap = i2c_get_adapter(2);
- memset(&i2c_info, 0, sizeof(struct i2c_board_info));
- strlcpy(i2c_info.type, "isp1301_nxp", I2C_NAME_SIZE);
- isp1301_i2c_client = i2c_new_probed_device(i2c_adap, &i2c_info,
- normal_i2c, NULL);
- i2c_put_adapter(i2c_adap);
- if (!isp1301_i2c_client) {
- err("failed to connect I2C to ISP1301 USB Transceiver");
+ dev_dbg(&pdev->dev, "%s: " DRIVER_DESC " (nxp)\n", hcd_name);
+ if (usb_disabled()) {
+ dev_err(&pdev->dev, "USB is disabled\n");
ret = -ENODEV;
- goto out_i2c_driver;
+ goto out;
}
+ /* Enable AHB slave USB clock, needed for further USB clock control */
+ __raw_writel(USB_SLAVE_HCLK_EN | PAD_CONTROL_LAST_DRIVEN, USB_CTRL);
+
isp1301_configure();
/* Enable USB PLL */
usb_clk = clk_get(&pdev->dev, "ck_pll5");
if (IS_ERR(usb_clk)) {
- err("failed to acquire USB PLL");
+ dev_err(&pdev->dev, "failed to acquire USB PLL\n");
ret = PTR_ERR(usb_clk);
goto out1;
}
ret = clk_enable(usb_clk);
if (ret < 0) {
- err("failed to start USB PLL");
+ dev_err(&pdev->dev, "failed to start USB PLL\n");
goto out2;
}
ret = clk_set_rate(usb_clk, 48000);
if (ret < 0) {
- err("failed to set USB clock rate");
+ dev_err(&pdev->dev, "failed to set USB clock rate\n");
goto out3;
}
@@ -442,9 +357,9 @@ static int __devinit usb_hcd_nxp_probe(struct platform_device *pdev)
while ((__raw_readl(USB_OTG_CLK_STAT) & USB_CLOCK_MASK) !=
USB_CLOCK_MASK) ;
- hcd = usb_create_hcd (driver, &pdev->dev, dev_name(&pdev->dev));
+ hcd = usb_create_hcd(driver, &pdev->dev, dev_name(&pdev->dev));
if (!hcd) {
- err("Failed to allocate HC buffer");
+ dev_err(&pdev->dev, "Failed to allocate HC buffer\n");
ret = -ENOMEM;
goto out3;
}
@@ -452,14 +367,21 @@ static int __devinit usb_hcd_nxp_probe(struct platform_device *pdev)
/* Set all USB bits in the Start Enable register */
nxp_set_usb_bits();
- hcd->rsrc_start = pdev->resource[0].start;
- hcd->rsrc_len = pdev->resource[0].end - pdev->resource[0].start + 1;
- if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
- dev_dbg(&pdev->dev, "request_mem_region failed\n");
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!res) {
+ dev_err(&pdev->dev, "Failed to get MEM resource\n");
+ ret = -ENOMEM;
+ goto out4;
+ }
+
+ hcd->regs = devm_request_and_ioremap(&pdev->dev, res);
+ if (!hcd->regs) {
+ dev_err(&pdev->dev, "Failed to devm_request_and_ioremap\n");
ret = -ENOMEM;
goto out4;
}
- hcd->regs = (void __iomem *)pdev->resource[0].start;
+ hcd->rsrc_start = res->start;
+ hcd->rsrc_len = resource_size(res);
irq = platform_get_irq(pdev, 0);
if (irq < 0) {
@@ -486,10 +408,7 @@ out3:
out2:
clk_put(usb_clk);
out1:
- i2c_unregister_device(isp1301_i2c_client);
isp1301_i2c_client = NULL;
-out_i2c_driver:
- i2c_del_driver(&isp1301_driver);
out:
return ret;
}
@@ -507,7 +426,6 @@ static int usb_hcd_nxp_remove(struct platform_device *pdev)
clk_put(usb_clk);
i2c_unregister_device(isp1301_i2c_client);
isp1301_i2c_client = NULL;
- i2c_del_driver(&isp1301_driver);
platform_set_drvdata(pdev, NULL);
@@ -517,10 +435,19 @@ static int usb_hcd_nxp_remove(struct platform_device *pdev)
/* work with hotplug and coldplug */
MODULE_ALIAS("platform:usb-ohci");
+#ifdef CONFIG_OF
+static const struct of_device_id usb_hcd_nxp_match[] = {
+ { .compatible = "nxp,ohci-nxp" },
+ {},
+};
+MODULE_DEVICE_TABLE(of, usb_hcd_nxp_match);
+#endif
+
static struct platform_driver usb_hcd_nxp_driver = {
.driver = {
.name = "usb-ohci",
.owner = THIS_MODULE,
+ .of_match_table = of_match_ptr(usb_hcd_nxp_match),
},
.probe = usb_hcd_nxp_probe,
.remove = usb_hcd_nxp_remove,
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.