linux-kernel - Re: [RESEND PATCH 1/2] ARM: AM43xx: hwmod: add DSS hwmod data

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Message-ID: <20140616092219.GZ17845@atomide.com>
Date:	Mon, 16 Jun 2014 02:22:19 -0700
From:	Tony Lindgren <tony@...mide.com>
To:	Felipe Balbi <balbi@...com>
Cc:	Benoit Cousson <bcousson@...libre.org>,
	Paul Walmsley <paul@...an.com>,
	Linux OMAP Mailing List <linux-omap@...r.kernel.org>,
	Linux ARM Kernel Mailing List 
	<linux-arm-kernel@...ts.infradead.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Sathya Prakash M R <sathyap@...com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Tomi Valkeinen <tomi.valkeinen@...com>
Subject: Re: [RESEND PATCH 1/2] ARM: AM43xx: hwmod: add DSS hwmod data

* Felipe Balbi <balbi@...com> [140613 09:17]:
> From: Sathya Prakash M R <sathyap@...com>
> 
> Add DSS hwmod data for AM43xx.
> 
> Cc: Andrew Morton <akpm@...ux-foundation.org>
> Acked-by: Rajendra Nayak <rnayak@...com>
> Signed-off-by: Sathya Prakash M R <sathyap@...com>
> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@...com>
> Signed-off-by: Felipe Balbi <balbi@...com>
> ---
> 
> Note that this patch was originally send on May 9th [1], changes were requested
> and a new version was sent on May 19th [2], then on May 27th [3] Tomi pinged
> maintainer again and go no response.
> 
> Without this patch, we cannot get display working on any AM437x devices.
> 
> [1] http://marc.info/?l=linux-arm-kernel&m=139963677925227&w=2
> [2] http://marc.info/?l=linux-arm-kernel&m=140049799425512&w=2
> [3] http://marc.info/?l=linux-arm-kernel&m=140117232826754&w=2
> 
>  arch/arm/mach-omap2/omap_hwmod_43xx_data.c | 98 ++++++++++++++++++++++++++++++
>  arch/arm/mach-omap2/prcm43xx.h             |  1 +
>  2 files changed, 99 insertions(+)
> 
> diff --git a/arch/arm/mach-omap2/omap_hwmod_43xx_data.c b/arch/arm/mach-omap2/omap_hwmod_43xx_data.c
> index 5c2cc80..d2a7b6d 100644
> --- a/arch/arm/mach-omap2/omap_hwmod_43xx_data.c
> +++ b/arch/arm/mach-omap2/omap_hwmod_43xx_data.c
> @@ -19,6 +19,8 @@
>  #include "omap_hwmod.h"
>  #include "omap_hwmod_33xx_43xx_common_data.h"
>  #include "prcm43xx.h"
> +#include "omap_hwmod_common_data.h"
> +
>  
>  /* IP blocks */
>  static struct omap_hwmod am43xx_l4_hs_hwmod = {
> @@ -415,6 +417,70 @@ static struct omap_hwmod am43xx_qspi_hwmod = {
>  	},
>  };
>  
> +/* Display sub system - DSS */
> +
> +struct omap_dss_dispc_dev_attr am43xx_dss_dispc_dev_attr = {
> +	.manager_count		= 1,
> +	.has_framedonetv_irq	= 0
> +};
> +
> +
> +static struct omap_hwmod_class_sysconfig am43xx_dispc_sysc = {
> +	.rev_offs	= 0x0000,
> +	.sysc_offs	= 0x0010,
> +	.syss_offs	= 0x0014,
> +	.sysc_flags	= (SYSC_HAS_SIDLEMODE | SYSC_HAS_MIDLEMODE),
> +	.idlemodes	= (SIDLE_FORCE | SIDLE_NO | SIDLE_SMART),
> +	.sysc_fields	= &omap_hwmod_sysc_type1,
> +};

Looking at the TRM, "Table 13-43. DISPC_SYSCFG Register Field
Descriptions" seems to list the folowing bits available:

13-12	MIDLEMODE 
9-8	CLOCK_ACTIVITY 
4-3	SIDLEMODE 
2	ENWAKEUP 
1	SOFTRESET 
0	AUTOIDLE 

Have I missed something or how come we don't define them all
as available?

The .idlemodes available values and .sysc_fields seems to match
the TRM.

Regards,

Tony
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