Re: [PATCH 1/5 v8] arm: omap: usb: ehci and ohci hwmod structuresfor omap4

From: Cousson, Benoit
Date: Wed Sep 14 2011 - 12:50:46 EST

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Hi Keshava,

On 8/25/2011 9:01 AM, Munegowda, Keshava wrote:
> From: Benoit Cousson<b-cousson@xxxxxx>
>
> 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@xxxxxx>

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@xxxxxx>
> ---
> 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
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