[PATCH] arm: omap3: am35x: Set proper powerdomain states
Jean Pihet
jean.pihet at newoldbits.com
Tue May 15 03:43:52 EDT 2012
Hi Mark,
On Mon, Apr 30, 2012 at 11:26 PM, Mark A. Greer <mgreer at animalcreek.com> wrote:
> From: "Mark A. Greer" <mgreer at animalcreek.com>
>
> The am35x family of SoCs only support the PWRSTS_ON
> state so create a new set of powerdomain structures
> that ensure that only the ON state is entered.
>
> Signed-off-by: Mark A. Greer <mgreer at animalcreek.com>
> ---
>
> These patches apply on top of Kevin's patch series,
> "[PATCH/RFT 0/8] ARM: OMAP: remove IP checks from SoC family detection"
>
> Tested on an am3517 evm and am37x evm.
>
> arch/arm/mach-omap2/powerdomains3xxx_data.c | 136 ++++++++++++++++++++++++---
> 1 file changed, 124 insertions(+), 12 deletions(-)
>
> diff --git a/arch/arm/mach-omap2/powerdomains3xxx_data.c b/arch/arm/mach-omap2/powerdomains3xxx_data.c
> index fb0a0a6..6ec06ad 100644
> --- a/arch/arm/mach-omap2/powerdomains3xxx_data.c
> +++ b/arch/arm/mach-omap2/powerdomains3xxx_data.c
> @@ -71,6 +71,22 @@ static struct powerdomain mpu_3xxx_pwrdm = {
> .voltdm = { .name = "mpu_iva" },
> };
>
> +static struct powerdomain mpu_am35x_pwrdm = {
> + .name = "mpu_pwrdm",
> + .prcm_offs = MPU_MOD,
> + .pwrsts = PWRSTS_ON,
> + .pwrsts_logic_ret = PWRSTS_ON,
> + .flags = PWRDM_HAS_MPU_QUIRK,
> + .banks = 1,
> + .pwrsts_mem_ret = {
> + [0] = PWRSTS_ON,
> + },
> + .pwrsts_mem_on = {
> + [0] = PWRSTS_ON,
> + },
> + .voltdm = { .name = "mpu_iva" },
> +};
> +
> /*
> * The USBTLL Save-and-Restore mechanism is broken on
> * 3430s up to ES3.0 and 3630ES1.0. Hence this feature
> @@ -120,6 +136,23 @@ static struct powerdomain core_3xxx_es3_1_pwrdm = {
> .voltdm = { .name = "core" },
> };
>
> +static struct powerdomain core_am35x_pwrdm = {
> + .name = "core_pwrdm",
> + .prcm_offs = CORE_MOD,
> + .pwrsts = PWRSTS_ON,
> + .pwrsts_logic_ret = PWRSTS_ON,
> + .banks = 2,
> + .pwrsts_mem_ret = {
> + [0] = PWRSTS_ON, /* MEM1RETSTATE */
> + [1] = PWRSTS_ON, /* MEM2RETSTATE */
> + },
> + .pwrsts_mem_on = {
> + [0] = PWRSTS_ON, /* MEM1ONSTATE */
> + [1] = PWRSTS_ON, /* MEM2ONSTATE */
> + },
> + .voltdm = { .name = "core" },
> +};
> +
> static struct powerdomain dss_pwrdm = {
> .name = "dss_pwrdm",
> .prcm_offs = OMAP3430_DSS_MOD,
> @@ -135,6 +168,21 @@ static struct powerdomain dss_pwrdm = {
> .voltdm = { .name = "core" },
> };
>
> +static struct powerdomain dss_am35x_pwrdm = {
> + .name = "dss_pwrdm",
> + .prcm_offs = OMAP3430_DSS_MOD,
> + .pwrsts = PWRSTS_ON,
> + .pwrsts_logic_ret = PWRSTS_ON,
> + .banks = 1,
> + .pwrsts_mem_ret = {
> + [0] = PWRSTS_ON, /* MEMRETSTATE */
> + },
> + .pwrsts_mem_on = {
> + [0] = PWRSTS_ON, /* MEMONSTATE */
> + },
> + .voltdm = { .name = "core" },
> +};
> +
> /*
> * Although the 34XX TRM Rev K Table 4-371 notes that retention is a
> * possible SGX powerstate, the SGX device itself does not support
> @@ -156,6 +204,21 @@ static struct powerdomain sgx_pwrdm = {
> .voltdm = { .name = "core" },
> };
>
> +static struct powerdomain sgx_am35x_pwrdm = {
> + .name = "sgx_pwrdm",
> + .prcm_offs = OMAP3430ES2_SGX_MOD,
> + .pwrsts = PWRSTS_ON,
> + .pwrsts_logic_ret = PWRSTS_ON,
> + .banks = 1,
> + .pwrsts_mem_ret = {
> + [0] = PWRSTS_ON, /* MEMRETSTATE */
> + },
> + .pwrsts_mem_on = {
> + [0] = PWRSTS_ON, /* MEMONSTATE */
> + },
> + .voltdm = { .name = "core" },
> +};
> +
> static struct powerdomain cam_pwrdm = {
> .name = "cam_pwrdm",
> .prcm_offs = OMAP3430_CAM_MOD,
> @@ -186,6 +249,21 @@ static struct powerdomain per_pwrdm = {
> .voltdm = { .name = "core" },
> };
>
> +static struct powerdomain per_am35x_pwrdm = {
> + .name = "per_pwrdm",
> + .prcm_offs = OMAP3430_PER_MOD,
> + .pwrsts = PWRSTS_ON,
> + .pwrsts_logic_ret = PWRSTS_ON,
> + .banks = 1,
> + .pwrsts_mem_ret = {
> + [0] = PWRSTS_ON, /* MEMRETSTATE */
> + },
> + .pwrsts_mem_on = {
> + [0] = PWRSTS_ON, /* MEMONSTATE */
> + },
> + .voltdm = { .name = "core" },
> +};
> +
> static struct powerdomain emu_pwrdm = {
> .name = "emu_pwrdm",
> .prcm_offs = OMAP3430_EMU_MOD,
> @@ -200,6 +278,14 @@ static struct powerdomain neon_pwrdm = {
> .voltdm = { .name = "mpu_iva" },
> };
>
> +static struct powerdomain neon_am35x_pwrdm = {
> + .name = "neon_pwrdm",
> + .prcm_offs = OMAP3430_NEON_MOD,
> + .pwrsts = PWRSTS_ON,
> + .pwrsts_logic_ret = PWRSTS_ON,
> + .voltdm = { .name = "mpu_iva" },
> +};
> +
> static struct powerdomain usbhost_pwrdm = {
> .name = "usbhost_pwrdm",
> .prcm_offs = OMAP3430ES2_USBHOST_MOD,
> @@ -293,6 +379,22 @@ static struct powerdomain *powerdomains_omap3430es3_1plus[] __initdata = {
> NULL
> };
>
> +static struct powerdomain *powerdomains_am35x[] __initdata = {
> + &wkup_omap2_pwrdm,
> + &mpu_am35x_pwrdm,
> + &neon_am35x_pwrdm,
> + &core_am35x_pwrdm,
> + &sgx_am35x_pwrdm,
> + &dss_am35x_pwrdm,
> + &per_am35x_pwrdm,
> + &emu_pwrdm,
> + &dpll1_pwrdm,
> + &dpll3_pwrdm,
> + &dpll4_pwrdm,
> + &dpll5_pwrdm,
> + NULL
> +};
> +
This looks good!
> void __init omap3xxx_powerdomains_init(void)
> {
> unsigned int rev;
> @@ -301,21 +403,31 @@ void __init omap3xxx_powerdomains_init(void)
> return;
>
> pwrdm_register_platform_funcs(&omap3_pwrdm_operations);
> - pwrdm_register_pwrdms(powerdomains_omap3430_common);
>
> rev = omap_rev();
>
> - if (rev == OMAP3430_REV_ES1_0)
> - pwrdm_register_pwrdms(powerdomains_omap3430es1);
> - else if (rev == OMAP3430_REV_ES2_0 || rev == OMAP3430_REV_ES2_1 ||
> - rev == OMAP3430_REV_ES3_0 || rev == OMAP3630_REV_ES1_0)
> - pwrdm_register_pwrdms(powerdomains_omap3430es2_es3_0);
> - else if (rev == OMAP3430_REV_ES3_1 || rev == OMAP3430_REV_ES3_1_2 ||
> - rev == AM35XX_REV_ES1_0 || rev == AM35XX_REV_ES1_1 ||
> - rev == OMAP3630_REV_ES1_1 || rev == OMAP3630_REV_ES1_2)
> - pwrdm_register_pwrdms(powerdomains_omap3430es3_1plus);
> - else
> - WARN(1, "OMAP3 powerdomain init: unknown chip type\n");
> + if (rev == AM35XX_REV_ES1_0 || rev == AM35XX_REV_ES1_1) {
> + pwrdm_register_pwrdms(powerdomains_am35x);
> + } else {
> + pwrdm_register_pwrdms(powerdomains_omap3430_common);
Is there a way to avoid the big 'if else' here and have the code
organized per chipset revision? A mutliple if-else or -even better
IMO- a switch-case would make the code more readable.
> +
> + if (rev == OMAP3430_REV_ES1_0)
> + pwrdm_register_pwrdms(powerdomains_omap3430es1);
> + else if (rev == OMAP3430_REV_ES2_0 ||
> + rev == OMAP3430_REV_ES2_1 ||
> + rev == OMAP3430_REV_ES3_0 ||
> + rev == OMAP3630_REV_ES1_0)
> + pwrdm_register_pwrdms(powerdomains_omap3430es2_es3_0);
> + else if (rev == OMAP3430_REV_ES3_1 ||
> + rev == OMAP3430_REV_ES3_1_2 ||
> + rev == AM35XX_REV_ES1_0 ||
> + rev == AM35XX_REV_ES1_1 ||
> + rev == OMAP3630_REV_ES1_1 ||
> + rev == OMAP3630_REV_ES1_2)
> + pwrdm_register_pwrdms(powerdomains_omap3430es3_1plus);
> + else
> + WARN(1, "OMAP3 powerdomain init: unknown chip type\n");
> + }
>
> pwrdm_complete_init();
> }
Thanks,
Jean
> --
> 1.7.9.4
>
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