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Message-ID: <5142E86C.90805@ti.com>
Date: Fri, 15 Mar 2013 11:22:52 +0200
From: Roger Quadros <rogerq@...com>
To: Tony Lindgren <tony@...mide.com>
CC: <balbi@...com>, <b-cousson@...com>, <linux-kernel@...r.kernel.org>,
<linux-usb@...r.kernel.org>, <linux-omap@...r.kernel.org>,
<devicetree-discuss@...ts.ozlabs.org>
Subject: Re: [PATCH 00/24] ARM: OMAP2+: Adapt to ehci-omap changes for 3.10
On 03/14/2013 06:54 PM, Tony Lindgren wrote:
> * Roger Quadros <rogerq@...com> [130314 08:45]:
>>
>> OK. Let me know how the below patch looks. After that, the board code
>> will look like.
>>
>> static struct usbhs_phy_data phy_data[] = {
>> {
>> .reset_gpio = 147,
>> .vcc_gpio = 148
>> .vcc_polarity = 1,
>> .phy_id = "nop_usb_xceiv.2",
>> },
>> {}, /* Terminator */
>> };
>>
>> usbhs_init_phys(phy_data);
>
> Great, looks good to me.
>
>> Patch to implement usbhs_init_phys();
>>
>> diff --git a/arch/arm/mach-omap2/usb-host.c b/arch/arm/mach-omap2/usb-host.c
>> index 5706bdc..b9d6bff 100644
>> --- a/arch/arm/mach-omap2/usb-host.c
>> +++ b/arch/arm/mach-omap2/usb-host.c
>> @@ -22,8 +22,12 @@
>> #include <linux/platform_device.h>
>> #include <linux/slab.h>
>> #include <linux/dma-mapping.h>
>> +#include <linux/regulator/machine.h>
>> +#include <linux/regulator/fixed.h>
>> +#include <linux/string.h>
>>
>> #include <asm/io.h>
>> +#include <asm/gpio.h>
>
> Please change these both to linux/io.h and linux/gpio.h.
OK.
>
>> #include "soc.h"
>> #include "omap_device.h"
>> @@ -472,6 +476,141 @@ void __init setup_4430ohci_io_mux(const enum usbhs_omap_port_mode *port_mode)
>> }
>> }
>>
>> +static const char *reset_supply = "reset";
>> +static const char *vcc_supply = "vcc";
>> +
>> +/* Template for PHY regulators */
>> +static struct regulator_consumer_supply hsusb_reg_supplies[] = {
>> + { /* .supply & .dev_name filled later */ },
>> +};
>> +
>> +static struct regulator_init_data hsusb_reg_data = {
>> + .constraints = {
>> + .valid_ops_mask = REGULATOR_CHANGE_STATUS,
>> + },
>> + .consumer_supplies = hsusb_reg_supplies,
>> + .num_consumer_supplies = ARRAY_SIZE(hsusb_reg_supplies),
>> +};
>> +
>> +static struct fixed_voltage_config hsusb_reg_config = {
>> + /* .supply_name filled later */
>> + .microvolts = 3300000,
>> + .gpio = -1, /* updated later */
>> + .startup_delay = 70000, /* 70msec */
>> + .enable_high = 1, /* updated later */
>> + .enabled_at_boot = 0, /* keep in RESET */
>> + /* .init_data filled later */
>> +};
>> +
>> +static struct platform_device_info hsusb_reg_pdev_info = {
>> + .name = "reg-fixed-voltage",
>> + .id = PLATFORM_DEVID_AUTO,
>> +};
>> +
>> +int __init usbhs_init_phys(struct usbhs_phy_data *phy)
>> +{
>> + struct regulator_consumer_supply *supplies;
>> + struct regulator_init_data *reg_data;
>> + struct fixed_voltage_config *config;
>> + char *supply_name;
>> + int i;
>> +
>> +
>> + for (i = 1; i <= OMAP3_HS_USB_PORTS; i++) {
>
> Maybe pass the number of ports to initialize too to the
> function? Might be more future proof, although it will only
> be needed until we have converted to DT.
>
OK. I'll add a port index parameter to the usbhs_phy_data structure
to indicate which port the data belongs to and a number of ports
to usbhs_init_phys()
board code can then do
static struct usbhs_phy_data phy_data[] = {
{
.port = 1, /* First USB port */
.reset_gpio = 147,
.vcc_gpio = 148
.vcc_polarity = 1,
.phy_id = "nop_usb_xceiv.2",
},
};
usbhs_init_phys(phy_data, ARRAY_SIZE(phy_data));
>> +
>> + if (!phy->phy_id) /* Terminator ? */
>> + break;
>> +
>> + if (!gpio_is_valid(phy->reset_gpio))
>> + goto check_vcc;
>> +
>> + supplies = kmemdup(hsusb_reg_supplies,
>> + ARRAY_SIZE(hsusb_reg_supplies) *
>> + sizeof(struct regulator_consumer_supply),
>> + GFP_KERNEL);
>> + if (!supplies)
>> + return -ENOMEM;
>> +
>> + supplies->supply = reset_supply;
>> + supplies->dev_name = phy->phy_id;
>> +
>> + reg_data = kmemdup(&hsusb_reg_data, sizeof(hsusb_reg_data),
>> + GFP_KERNEL);
>> + if (!reg_data)
>> + return -ENOMEM;
>> +
>> + reg_data->consumer_supplies = supplies;
>> +
>> + config = kmemdup(&hsusb_reg_config, sizeof(hsusb_reg_config),
>> + GFP_KERNEL);
>> + if (!config)
>> + return -ENOMEM;
>> +
>> + supply_name = kmalloc(14, GFP_KERNEL);
>> + if (!supply_name)
>> + return -ENOMEM;
>> +
>> + scnprintf(supply_name, 13, "hsusb%d_reset", i);
>> + config->supply_name = supply_name;
>> + config->gpio = phy->reset_gpio;
>> + config->init_data = reg_data;
>> +
>> + hsusb_reg_pdev_info.data = config;
>> + hsusb_reg_pdev_info.size_data = sizeof(hsusb_reg_config);
>> + platform_device_register_full(&hsusb_reg_pdev_info);
>> +
>> +check_vcc:
>> + if (!gpio_is_valid(phy->vcc_gpio))
>> + goto next;
>> +
>> + supplies = kmemdup(hsusb_reg_supplies,
>> + ARRAY_SIZE(hsusb_reg_supplies) *
>> + sizeof(struct regulator_consumer_supply),
>> + GFP_KERNEL);
>> + if (!supplies)
>> + return -ENOMEM;
>> +
>> + supplies->supply = vcc_supply;
>> + supplies->dev_name = phy->phy_id;
>> +
>> + reg_data = kmemdup(&hsusb_reg_data, sizeof(hsusb_reg_data),
>> + GFP_KERNEL);
>> + if (!reg_data)
>> + return -ENOMEM;
>> +
>> + reg_data->consumer_supplies = supplies;
>> +
>> + config = kmemdup(&hsusb_reg_config, sizeof(hsusb_reg_config),
>> + GFP_KERNEL);
>> + if (!config)
>> + return -ENOMEM;
>> +
>> + supply_name = kmalloc(14, GFP_KERNEL);
>> + if (!supply_name)
>> + return -ENOMEM;
>> +
>> + scnprintf(supply_name, 13, "hsusb%d_vcc", i);
>> + config->supply_name = supply_name;
>> + config->gpio = phy->vcc_gpio;
>> + config->enable_high = phy->vcc_polarity;
>> + config->init_data = reg_data;
>> +
>> + hsusb_reg_pdev_info.data = config;
>> + hsusb_reg_pdev_info.size_data = sizeof(hsusb_reg_config);
>> + platform_device_register_full(&hsusb_reg_pdev_info);
>> +
>> +next:
>> + phy++;
>> + }
>> +
>> + return 0;
>> +}
>> +
>> void __init usbhs_init(struct usbhs_omap_platform_data *pdata)
>> {
>> struct omap_hwmod *uhh_hwm, *tll_hwm;
>> diff --git a/arch/arm/mach-omap2/usb.h b/arch/arm/mach-omap2/usb.h
>> index 3319f5c..70a8c63 100644
>> --- a/arch/arm/mach-omap2/usb.h
>> +++ b/arch/arm/mach-omap2/usb.h
>> @@ -53,8 +53,16 @@
>> #define USBPHY_OTGSESSEND_EN (1 << 20)
>> #define USBPHY_DATA_POLARITY (1 << 23)
>>
>> +struct usbhs_phy_data {
>> + int reset_gpio;
>> + int vcc_gpio;
>> + bool vcc_polarity; /* 1 active high, 0 active low */
>> + char *phy_id;
>> +};
>> +
>> extern void usb_musb_init(struct omap_musb_board_data *board_data);
>> extern void usbhs_init(struct usbhs_omap_platform_data *pdata);
>> +extern int usbhs_init_phys(struct usbhs_phy_data *phy);
>
> Maybe need a static inline version when no EHCI is selected?
>
Yes.
> Otherwise looks good to me, thanks for updating it.
>
Cool. I'll update all boards and send it to you soon.
cheers,
-roger
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