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Date: Thu, 15 Sep 2011 11:25:58 +0530
From: "Munegowda, Keshava" <keshava_mgowda@...com>
To: "Cousson, Benoit" <b-cousson@...com>
Cc: "linux-usb@...r.kernel.org" <linux-usb@...r.kernel.org>,
"linux-omap@...r.kernel.org" <linux-omap@...r.kernel.org>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
"Balbi, Felipe" <balbi@...com>, "Gadiyar, Anand" <gadiyar@...com>,
"sameo@...ux.intel.com" <sameo@...ux.intel.com>,
"parthab@...ia.ti.com" <parthab@...ia.ti.com>,
"tony@...mide.com" <tony@...mide.com>,
"Hilman, Kevin" <khilman@...com>,
"paul@...an.com" <paul@...an.com>,
"johnstul@...ibm.com" <johnstul@...ibm.com>,
"Sripathy, Vishwanath" <vishwanath.bs@...com>,
"Quadros, Roger" <rogerq@...com>
Subject: Re: [PATCH 1/5 v8] arm: omap: usb: ehci and ohci hwmod structures for omap4
On Wed, Sep 14, 2011 at 10:20 PM, Cousson, Benoit <b-cousson@...com> wrote:
> Hi Keshava,
>
> On 8/25/2011 9:01 AM, Munegowda, Keshava wrote:
>> From: Benoit Cousson<b-cousson@...com>
>>
>> Following 4 hwmod structures are added:
>> UHH hwmod of usbhs with uhh base address and functional clock,
>> EHCI hwmod with irq and base address,
>> OHCI hwmod with irq and base address,
>> TLL hwmod of usbhs with the TLL base address and irq.
>>
>> Signed-off-by: Benoit Cousson<b-cousson@...com>
>
> That version is really different compared to my original patch, so you should highlight the diff you introduced.
>
>> Signed-off-by: Keshava Munegowda<keshava_mgowda@...com>
>> ---
>> arch/arm/mach-omap2/omap_hwmod_44xx_data.c | 247 ++++++++++++++++++++++++++++
>> 1 files changed, 247 insertions(+), 0 deletions(-)
>>
>> diff --git a/arch/arm/mach-omap2/omap_hwmod_44xx_data.c b/arch/arm/mach-omap2/omap_hwmod_44xx_data.c
>> index 6201422..0bc01dd 100644
>> --- a/arch/arm/mach-omap2/omap_hwmod_44xx_data.c
>> +++ b/arch/arm/mach-omap2/omap_hwmod_44xx_data.c
>> @@ -68,6 +68,10 @@ static struct omap_hwmod omap44xx_mmc2_hwmod;
>> static struct omap_hwmod omap44xx_mpu_hwmod;
>> static struct omap_hwmod omap44xx_mpu_private_hwmod;
>> static struct omap_hwmod omap44xx_usb_otg_hs_hwmod;
>> +static struct omap_hwmod omap44xx_usb_host_hs_hwmod;
>> +static struct omap_hwmod omap44xx_usbhs_ohci_hwmod;
>> +static struct omap_hwmod omap44xx_usbhs_ehci_hwmod;
>> +static struct omap_hwmod omap44xx_usb_tll_hs_hwmod;
>
> None of the 3 last entries are master, and thus should not need any backward declaration.
>
>> /*
>> * Interconnects omap_hwmod structures
>> @@ -5336,6 +5340,245 @@ static struct omap_hwmod omap44xx_wd_timer3_hwmod = {
>> .omap_chip = OMAP_CHIP_INIT(CHIP_IS_OMAP4430),
>> };
>>
>> +/*
>> + * 'usb_host_hs' class
>> + * high-speed multi-port usb host controller
>> + */
>> +static struct omap_hwmod_ocp_if omap44xx_usb_host_hs__l3_main_2 = {
>> + .master =&omap44xx_usb_host_hs_hwmod,
>> + .slave =&omap44xx_l3_main_2_hwmod,
>> + .clk = "l3_div_ck",
>> + .user = OCP_USER_MPU | OCP_USER_SDMA,
>> +};
>> +
>> +static struct omap_hwmod_class_sysconfig omap44xx_usb_host_hs_sysc = {
>> + .rev_offs = 0x0000,
>> + .sysc_offs = 0x0010,
>> + .syss_offs = 0x0014,
>> + .sysc_flags = (SYSC_HAS_MIDLEMODE | SYSC_HAS_SIDLEMODE),
>> + .idlemodes = (SIDLE_FORCE | SIDLE_NO | SIDLE_SMART |
>> + SIDLE_SMART_WKUP | MSTANDBY_FORCE |
>> + MSTANDBY_NO | MSTANDBY_SMART |
>> + MSTANDBY_SMART_WKUP),
>
> Minor, but it should be:
> + .idlemodes = (SIDLE_FORCE | SIDLE_NO | SIDLE_SMART |
> + SIDLE_SMART_WKUP | MSTANDBY_FORCE | MSTANDBY_NO |
> + MSTANDBY_SMART | MSTANDBY_SMART_WKUP),
>
>> + .sysc_fields =&omap_hwmod_sysc_type2,
>> +};
>> +
>> +static struct omap_hwmod_class omap44xx_usb_host_hs_hwmod_class = {
>> + .name = "usbhs_uhh",
>> + .sysc =&omap44xx_usb_host_hs_sysc,
>> +};
>> +
>> +static struct omap_hwmod_ocp_if *omap44xx_usb_host_hs_masters[] = {
>> + &omap44xx_usb_host_hs__l3_main_2,
>> +};
>> +
>> +static struct omap_hwmod_addr_space omap44xx_usb_host_hs_addrs[] = {
>> + {
>> + .name = "uhh",
>
> In general, there is no name for unique entry. And if you need a name, you should find something relevant considering this is local to the hwmod.
>
>> + .pa_start = 0x4a064000,
>> + .pa_end = 0x4a0647ff,
>> + .flags = ADDR_TYPE_RT
>> + },
>> + {} /* Terminating Entry */
>
> That comment is useless. Paul added one space inside the terminator as well.
>
>> +};
>> +
>> +static struct omap_hwmod_ocp_if omap44xx_l4_cfg__usb_host_hs = {
>> + .master =&omap44xx_l4_cfg_hwmod,
>> + .slave =&omap44xx_usb_host_hs_hwmod,
>> + .clk = "l4_div_ck",
>> + .addr = omap44xx_usb_host_hs_addrs,
>> + .user = OCP_USER_MPU | OCP_USER_SDMA,
>> +};
>> +
>> +static struct omap_hwmod_ocp_if *omap44xx_usb_host_hs_slaves[] = {
>> + &omap44xx_l4_cfg__usb_host_hs,
>> +};
>> +
>> +static struct omap_hwmod omap44xx_usb_host_hs_hwmod = {
>> + .name = "usbhs_uhh",
>> + .class =&omap44xx_usb_host_hs_hwmod_class,
>> + .clkdm_name = "l3_init_clkdm",
>> + .main_clk = "usb_host_hs_fck",
>> + .prcm = {
>> + .omap4 = {
>> + .clkctrl_offs = OMAP4_CM_L3INIT_USB_HOST_CLKCTRL_OFFSET,
>> + .context_offs = OMAP4_RM_L3INIT_USB_HOST_CONTEXT_OFFSET,
>> + .modulemode = MODULEMODE_SWCTRL,
>> + },
>> + },
>> + .slaves = omap44xx_usb_host_hs_slaves,
>> + .slaves_cnt = ARRAY_SIZE(omap44xx_usb_host_hs_slaves),
>> + .masters = omap44xx_usb_host_hs_masters,
>> + .masters_cnt = ARRAY_SIZE(omap44xx_usb_host_hs_masters),
>> + .flags = HWMOD_SWSUP_SIDLE | HWMOD_SWSUP_MSTANDBY,
>> + .omap_chip = OMAP_CHIP_INIT(CHIP_IS_OMAP4430),
>> +};
>> +
>> +/* 'usbhs_ohci' class */
>> +static struct omap_hwmod_class omap44xx_usbhs_ohci_hwmod_class = {
>> + .name = "usbhs_ohci",
>
> In the context of devicetree and considering what Felipe did for the USB3, I'm wondering if you should define hwmods for ohci and ehci.
> I'm not 100% sure it will apply here, but cannot you add the register entries inside the usb_host_hs hwmod and create the devices using that?
>
> There is no PRCM entry for them so they do not need to be omap_device.
>
>> +};
>> +
>> +static struct omap_hwmod_irq_info omap44xx_usbhs_ohci_irqs[] = {
>> + { .name = "ohci-irq", .irq = 76 + OMAP44XX_IRQ_GIC_START },
>
> Same comment that before about address space name.
>
>> + { .irq = -1 } /* Terminating IRQ */
>> +};
>> +
>> +static struct omap_hwmod_addr_space omap44xx_usbhs_ohci_addrs[] = {
>> + {
>> + .name = "ohci",
>
> Same comment than before.
>
>> + .pa_start = 0x4A064800,
>> + .pa_end = 0x4A064BFF,
>> + .flags = ADDR_MAP_ON_INIT
>
> Why do you need that flag?
>
>> + },
>> + {}
>> +};
>> +
>> +static struct omap_hwmod_ocp_if omap44xx_l4_cfg__usbhs_ohci = {
>> + .master =&omap44xx_l4_cfg_hwmod,
>> + .slave =&omap44xx_usbhs_ohci_hwmod,
>> + .clk = "l4_div_ck",
>> + .addr = omap44xx_usbhs_ohci_addrs,
>> + .user = OCP_USER_MPU | OCP_USER_SDMA,
>> +};
>> +
>> +static struct omap_hwmod_ocp_if *omap44xx_usbhs_ohci_slaves[] = {
>> + &omap44xx_l4_cfg__usbhs_ohci,
>> +};
>> +
>> +static struct omap_hwmod_ocp_if *omap44xx_usbhs_ohci_masters[] = {
>> + &omap44xx_usb_host_hs__l3_main_2,
>> +};
>> +
>> +static struct omap_hwmod omap44xx_usbhs_ohci_hwmod = {
>> + .name = "usbhs_ohci",
>> + .class =&omap44xx_usbhs_ohci_hwmod_class,
>> + .clkdm_name = "l3_init_clkdm",
>> + .mpu_irqs = omap44xx_usbhs_ohci_irqs,
>> + .slaves = omap44xx_usbhs_ohci_slaves,
>> + .slaves_cnt = ARRAY_SIZE(omap44xx_usbhs_ohci_slaves),
>> + .masters = omap44xx_usbhs_ohci_masters,
>> + .masters_cnt = ARRAY_SIZE(omap44xx_usbhs_ohci_masters),
>
> Assuming you need hwmod entries for that, these master entries are useless and probably wrong.
> The TRM just documents 2 ports for usb_host_hs and 1 port for usb_tll_hs.
>
> You will still need the slave for the address space.
>
>> + .omap_chip = OMAP_CHIP_INIT(CHIP_IS_OMAP4430),
>> + .flags = HWMOD_INIT_NO_RESET | HWMOD_NO_IDLEST,
>> +};
>> +
>> +/* 'usbhs_ehci' class */
>> +static struct omap_hwmod_class omap44xx_usbhs_ehci_hwmod_class = {
>> + .name = "usbhs_ehci",
>> +};
>> +
>> +static struct omap_hwmod_irq_info omap44xx_usbhs_ehci_irqs[] = {
>> + { .name = "ehci-irq", .irq = 77 + OMAP44XX_IRQ_GIC_START },
>> + { .irq = -1 } /* Terminating IRQ */
>> +};
>> +
>> +static struct omap_hwmod_addr_space omap44xx_usbhs_ehci_addrs[] = {
>> + {
>> + .name = "ehci",
>> + .pa_start = 0x4A064C00,
>> + .pa_end = 0x4A064FFF,
>> + .flags = ADDR_MAP_ON_INIT
>> + },
>> + {} /* Terminating Entry */
>> +};
>> +
>> +static struct omap_hwmod_ocp_if omap44xx_l4_cfg__usbhs_ehci = {
>> + .master =&omap44xx_l4_cfg_hwmod,
>> + .slave =&omap44xx_usbhs_ehci_hwmod,
>> + .clk = "l4_div_ck",
>> + .addr = omap44xx_usbhs_ehci_addrs,
>> + .user = OCP_USER_MPU | OCP_USER_SDMA,
>> +};
>> +
>> +static struct omap_hwmod_ocp_if *omap44xx_usbhs_ehci_slaves[] = {
>> + &omap44xx_l4_cfg__usbhs_ehci,
>> +};
>> +
>> +static struct omap_hwmod_ocp_if *omap44xx_usbhs_ehci_masters[] = {
>> + &omap44xx_usb_host_hs__l3_main_2,
>> +};
>> +
>> +
>> +static struct omap_hwmod omap44xx_usbhs_ehci_hwmod = {
>> + .name = "usbhs_ehci",
>> + .class =&omap44xx_usbhs_ehci_hwmod_class,
>> + .clkdm_name = "l3_init_clkdm",
>> + .mpu_irqs = omap44xx_usbhs_ehci_irqs,
>> + .slaves = omap44xx_usbhs_ehci_slaves,
>> + .slaves_cnt = ARRAY_SIZE(omap44xx_usbhs_ehci_slaves),
>> + .masters = omap44xx_usbhs_ehci_masters,
>> + .masters_cnt = ARRAY_SIZE(omap44xx_usbhs_ehci_masters),
>> + .omap_chip = OMAP_CHIP_INIT(CHIP_IS_OMAP4430),
>> + .flags = HWMOD_INIT_NO_RESET | HWMOD_NO_IDLEST,
>> +};
>> +
>> +/*
>> + * 'usb_tll_hs' class
>> + * usb_tll_hs module is the adapter on the usb_host_hs ports
>> + */
>> +static struct omap_hwmod_class_sysconfig omap44xx_usb_tll_hs_sysc = {
>> + .rev_offs = 0x0000,
>> + .sysc_offs = 0x0010,
>> + .syss_offs = 0x0014,
>> + .sysc_flags = (SYSC_HAS_AUTOIDLE | SYSC_HAS_SIDLEMODE |
>> + SYSC_HAS_SOFTRESET | SYSC_HAS_ENAWAKEUP |
>> + SYSC_HAS_CLOCKACTIVITY),
>> + .idlemodes = (SIDLE_FORCE | SIDLE_NO | SIDLE_SMART),
>> + .sysc_fields =&omap_hwmod_sysc_type1,
>> +};
>> +
>> +static struct omap_hwmod_class omap44xx_usb_tll_hs_hwmod_class = {
>> + .name = "usbhs_tll",
>> + .sysc =&omap44xx_usb_tll_hs_sysc,
>> +};
>> +
>> +static struct omap_hwmod_irq_info omap44xx_usb_tll_hs_irqs[] = {
>> + { .name = "tll-irq", .irq = 78 + OMAP44XX_IRQ_GIC_START },
>> + { .irq = -1 } /* Terminating IRQ */
>> +};
>> +
>> +static struct omap_hwmod_addr_space omap44xx_usb_tll_hs_addrs[] = {
>> + {
>> + .name = "tll",
>> + .pa_start = 0x4a062000,
>> + .pa_end = 0x4a063fff,
>> + .flags = ADDR_TYPE_RT
>> + },
>> + {} /* Terminating Entry */
>> +};
>> +
>> +static struct omap_hwmod_ocp_if omap44xx_l4_cfg__usb_tll_hs = {
>> + .master =&omap44xx_l4_cfg_hwmod,
>> + .slave =&omap44xx_usb_tll_hs_hwmod,
>> + .clk = "l4_div_ck",
>> + .addr = omap44xx_usb_tll_hs_addrs,
>> + .user = OCP_USER_MPU | OCP_USER_SDMA,
>> +};
>> +
>> +static struct omap_hwmod_ocp_if *omap44xx_usb_tll_hs_slaves[] = {
>> + &omap44xx_l4_cfg__usb_tll_hs,
>> +};
>> +
>> +static struct omap_hwmod omap44xx_usb_tll_hs_hwmod = {
>> + .name = "usbhs_tll",
>> + .class =&omap44xx_usb_tll_hs_hwmod_class,
>> + .clkdm_name = "l3_init_clkdm",
>> + .mpu_irqs = omap44xx_usb_tll_hs_irqs,
>> + .main_clk = "usb_tll_hs_ick",
>> + .prcm = {
>> + .omap4 = {
>> + .clkctrl_offs = OMAP4_CM_L3INIT_USB_TLL_CLKCTRL_OFFSET,
>> + .context_offs = OMAP4_RM_L3INIT_USB_TLL_CONTEXT_OFFSET,
>> + .modulemode = MODULEMODE_HWCTRL,
>> + },
>> + },
>> + .slaves = omap44xx_usb_tll_hs_slaves,
>> + .slaves_cnt = ARRAY_SIZE(omap44xx_usb_tll_hs_slaves),
>> + .flags = HWMOD_SWSUP_SIDLE,
>> + .omap_chip = OMAP_CHIP_INIT(CHIP_IS_OMAP4430),
>> +};
>> +
>> static __initdata struct omap_hwmod *omap44xx_hwmods[] = {
>>
>> /* dmm class */
>> @@ -5482,6 +5725,10 @@ static __initdata struct omap_hwmod *omap44xx_hwmods[] = {
>> &omap44xx_wd_timer2_hwmod,
>> &omap44xx_wd_timer3_hwmod,
>>
>> + &omap44xx_usb_host_hs_hwmod,
>> + &omap44xx_usbhs_ohci_hwmod,
>> + &omap44xx_usbhs_ehci_hwmod,
>> + &omap44xx_usb_tll_hs_hwmod,
>
> This list is ordered, so it should be something like that:
>
> &omap44xx_uart3_hwmod,
> &omap44xx_uart4_hwmod,
>
> + /* usb_host_hs class */
> + &omap44xx_usb_host_hs_hwmod,
> +
> /* usb_otg_hs class */
> &omap44xx_usb_otg_hs_hwmod,
>
> + /* usb_tll_hs class */
> + &omap44xx_usb_tll_hs_hwmod,
> +
> /* wd_timer class */
> &omap44xx_wd_timer2_hwmod,
> &omap44xx_wd_timer3_hwmod,
>
> Regards,
> Benoit
Thanks benoit,
I make the changes as per your comments ! I will send the new set of
patches today only.
regards
keshava
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