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SubjectRe: [PATCH 2/4] arm: omap: usb: register hwmods of usbhs
Date
Hi Kesheva,

Keshava Munegowda <keshava_mgowda@ti.com> writes:

> The hwmod structure of uhh and tll are retrived
> and registered with omap device
>
> Signed-off-by: Keshava Munegowda <keshava_mgowda@ti.com>

Minor comment below...

> ---
> arch/arm/mach-omap2/usb-host.c | 99 ++++++++++++++--------------------------
> 1 files changed, 35 insertions(+), 64 deletions(-)
>
> diff --git a/arch/arm/mach-omap2/usb-host.c b/arch/arm/mach-omap2/usb-host.c
> index 89ae298..9d762c4 100644
> --- a/arch/arm/mach-omap2/usb-host.c
> +++ b/arch/arm/mach-omap2/usb-host.c
> @@ -28,51 +28,28 @@
> #include <mach/hardware.h>
> #include <mach/irqs.h>
> #include <plat/usb.h>
> +#include <plat/omap_device.h>
>
> #include "mux.h"
>
> #ifdef CONFIG_MFD_OMAP_USB_HOST
>
> -#define OMAP_USBHS_DEVICE "usbhs-omap"
> -
> -static struct resource usbhs_resources[] = {
> - {
> - .name = "uhh",
> - .flags = IORESOURCE_MEM,
> - },
> - {
> - .name = "tll",
> - .flags = IORESOURCE_MEM,
> - },
> - {
> - .name = "ehci",
> - .flags = IORESOURCE_MEM,
> - },
> - {
> - .name = "ehci-irq",
> - .flags = IORESOURCE_IRQ,
> - },
> - {
> - .name = "ohci",
> - .flags = IORESOURCE_MEM,
> - },
> - {
> - .name = "ohci-irq",
> - .flags = IORESOURCE_IRQ,
> - }
> -};
> -
> -static struct platform_device usbhs_device = {
> - .name = OMAP_USBHS_DEVICE,
> - .id = 0,
> - .num_resources = ARRAY_SIZE(usbhs_resources),
> - .resource = usbhs_resources,
> -};
> +#define OMAP_USBHS_DEVICE "usbhs_omap"
> +#define USBHS_UHH_HWMODNAME "usbhs_uhh"
> +#define USBHS_TLL_HWMODNAME "usbhs_tll"
>
> static struct usbhs_omap_platform_data usbhs_data;
> static struct ehci_hcd_omap_platform_data ehci_data;
> static struct ohci_hcd_omap_platform_data ohci_data;

While changing the platform_data registration, these platform_data
structs should be alloc'd and then free'd after omap_device_build, since
a copy of them is made during device registration.

Kevin

> +static struct omap_device_pm_latency omap_uhhtll_latency[] = {
> + {
> + .deactivate_func = omap_device_idle_hwmods,
> + .activate_func = omap_device_enable_hwmods,
> + .flags = OMAP_DEVICE_LATENCY_AUTO_ADJUST,
> + },
> +};
> +
> /* MUX settings for EHCI pins */
> /*
> * setup_ehci_io_mux - initialize IO pad mux for USBHOST
> @@ -508,7 +485,10 @@ static void setup_4430ohci_io_mux(const enum usbhs_omap_port_mode *port_mode)
>
> void __init usbhs_init(const struct usbhs_omap_board_data *pdata)
> {
> - int i;
> + struct omap_hwmod *oh[2];
> + struct omap_device *od;
> + int bus_id = -1;
> + int i;
>
> for (i = 0; i < OMAP3_HS_USB_PORTS; i++) {
> usbhs_data.port_mode[i] = pdata->port_mode[i];
> @@ -523,44 +503,35 @@ void __init usbhs_init(const struct usbhs_omap_board_data *pdata)
> usbhs_data.ohci_data = &ohci_data;
>
> if (cpu_is_omap34xx()) {
> - usbhs_resources[0].start = OMAP34XX_UHH_CONFIG_BASE;
> - usbhs_resources[0].end = OMAP34XX_UHH_CONFIG_BASE + SZ_1K - 1;
> - usbhs_resources[1].start = OMAP34XX_USBTLL_BASE;
> - usbhs_resources[1].end = OMAP34XX_USBTLL_BASE + SZ_4K - 1;
> - usbhs_resources[2].start = OMAP34XX_EHCI_BASE;
> - usbhs_resources[2].end = OMAP34XX_EHCI_BASE + SZ_1K - 1;
> - usbhs_resources[3].start = INT_34XX_EHCI_IRQ;
> - usbhs_resources[4].start = OMAP34XX_OHCI_BASE;
> - usbhs_resources[4].end = OMAP34XX_OHCI_BASE + SZ_1K - 1;
> - usbhs_resources[5].start = INT_34XX_OHCI_IRQ;
> setup_ehci_io_mux(pdata->port_mode);
> setup_ohci_io_mux(pdata->port_mode);
> } else if (cpu_is_omap44xx()) {
> - usbhs_resources[0].start = OMAP44XX_UHH_CONFIG_BASE;
> - usbhs_resources[0].end = OMAP44XX_UHH_CONFIG_BASE + SZ_1K - 1;
> - usbhs_resources[1].start = OMAP44XX_USBTLL_BASE;
> - usbhs_resources[1].end = OMAP44XX_USBTLL_BASE + SZ_4K - 1;
> - usbhs_resources[2].start = OMAP44XX_HSUSB_EHCI_BASE;
> - usbhs_resources[2].end = OMAP44XX_HSUSB_EHCI_BASE + SZ_1K - 1;
> - usbhs_resources[3].start = OMAP44XX_IRQ_EHCI;
> - usbhs_resources[4].start = OMAP44XX_HSUSB_OHCI_BASE;
> - usbhs_resources[4].end = OMAP44XX_HSUSB_OHCI_BASE + SZ_1K - 1;
> - usbhs_resources[5].start = OMAP44XX_IRQ_OHCI;
> setup_4430ehci_io_mux(pdata->port_mode);
> setup_4430ohci_io_mux(pdata->port_mode);
> }
>
> - if (platform_device_add_data(&usbhs_device,
> - &usbhs_data, sizeof(usbhs_data)) < 0) {
> - printk(KERN_ERR "USBHS platform_device_add_data failed\n");
> - goto init_end;
> + oh[0] = omap_hwmod_lookup(USBHS_UHH_HWMODNAME);
> + if (!oh[0]) {
> + pr_err("Could not look up %s\n", USBHS_UHH_HWMODNAME);
> + return;
> }
>
> - if (platform_device_register(&usbhs_device) < 0)
> - printk(KERN_ERR "USBHS platform_device_register failed\n");
> + oh[1] = omap_hwmod_lookup(USBHS_TLL_HWMODNAME);
> + if (!oh[1]) {
> + pr_err("Could not look up %s\n", USBHS_TLL_HWMODNAME);
> + return;
> + }
>
> -init_end:
> - return;
> + od = omap_device_build_ss(OMAP_USBHS_DEVICE, bus_id, oh, 2,
> + (void *)&usbhs_data, sizeof(usbhs_data),
> + omap_uhhtll_latency,
> + ARRAY_SIZE(omap_uhhtll_latency), false);
> +
> + if (IS_ERR(od)) {
> + pr_err("Could not build hwmod devices %s, %s\n",
> + USBHS_UHH_HWMODNAME, USBHS_TLL_HWMODNAME);
> + return;
> + }
> }
>
> #else


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