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| author | Linus Walleij <linus.walleij@linaro.org> | 2023-01-18 08:09:17 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-01-19 14:10:43 +0100 |
| commit | baef5330d35b477056c0304ce1283f0aed4d5d20 (patch) | |
| tree | 212877fcedfca65750f571378cfc15f7a25aecd9 /drivers/usb/fotg210/fotg210-core.c | |
| parent | 170da81aab077c9e85fc2b786413ca07942774a0 (diff) | |
| download | lwn-baef5330d35b477056c0304ce1283f0aed4d5d20.tar.gz lwn-baef5330d35b477056c0304ce1283f0aed4d5d20.zip | |
usb: fotg210: Acquire memory resource in core
The subdrivers are obtaining and mapping the memory resource
separately. Create a common state container for the shared
resources and start populating this by acquiring the IO
memory resource and remap it and pass this to the subdrivers
for host and peripheral.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20230103-gemini-fotg210-usb-v2-3-100388af9810@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/fotg210/fotg210-core.c')
| -rw-r--r-- | drivers/usb/fotg210/fotg210-core.c | 29 |
1 files changed, 22 insertions, 7 deletions
diff --git a/drivers/usb/fotg210/fotg210-core.c b/drivers/usb/fotg210/fotg210-core.c index da9ea5957ccf..0dd4957ad70a 100644 --- a/drivers/usb/fotg210/fotg210-core.c +++ b/drivers/usb/fotg210/fotg210-core.c @@ -33,9 +33,10 @@ #define GEMINI_MISC_USB0_MINI_B BIT(29) #define GEMINI_MISC_USB1_MINI_B BIT(30) -static int fotg210_gemini_init(struct device *dev, struct resource *res, +static int fotg210_gemini_init(struct fotg210 *fotg, struct resource *res, enum usb_dr_mode mode) { + struct device *dev = fotg->dev; struct device_node *np = dev->of_node; struct regmap *map; bool wakeup; @@ -47,6 +48,7 @@ static int fotg210_gemini_init(struct device *dev, struct resource *res, dev_err(dev, "no syscon\n"); return PTR_ERR(map); } + fotg->map = map; wakeup = of_property_read_bool(np, "wakeup-source"); /* @@ -55,6 +57,7 @@ static int fotg210_gemini_init(struct device *dev, struct resource *res, */ mask = 0; if (res->start == 0x69000000) { + fotg->port = GEMINI_PORT_1; mask = GEMINI_MISC_USB1_VBUS_ON | GEMINI_MISC_USB1_MINI_B | GEMINI_MISC_USB1_WAKEUP; if (mode == USB_DR_MODE_HOST) @@ -64,6 +67,7 @@ static int fotg210_gemini_init(struct device *dev, struct resource *res, if (wakeup) val |= GEMINI_MISC_USB1_WAKEUP; } else { + fotg->port = GEMINI_PORT_0; mask = GEMINI_MISC_USB0_VBUS_ON | GEMINI_MISC_USB0_MINI_B | GEMINI_MISC_USB0_WAKEUP; if (mode == USB_DR_MODE_HOST) @@ -89,23 +93,34 @@ static int fotg210_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; enum usb_dr_mode mode; + struct fotg210 *fotg; int ret; + fotg = devm_kzalloc(dev, sizeof(*fotg), GFP_KERNEL); + if (!fotg) + return -ENOMEM; + fotg->dev = dev; + + fotg->res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!fotg->res) + return -ENODEV; + + fotg->base = devm_ioremap_resource(dev, fotg->res); + if (!fotg->base) + return -ENOMEM; + mode = usb_get_dr_mode(dev); if (of_device_is_compatible(dev->of_node, "cortina,gemini-usb")) { - struct resource *res; - - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - ret = fotg210_gemini_init(dev, res, mode); + ret = fotg210_gemini_init(fotg, fotg->res, mode); if (ret) return ret; } if (mode == USB_DR_MODE_PERIPHERAL) - ret = fotg210_udc_probe(pdev); + ret = fotg210_udc_probe(pdev, fotg); else - ret = fotg210_hcd_probe(pdev); + ret = fotg210_hcd_probe(pdev, fotg); return ret; } |