From patchwork Tue Nov 21 12:50:29 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: AngeloGioacchino Del Regno X-Patchwork-Id: 745827 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=collabora.com header.i=@collabora.com header.b="asVihs0l" Received: from madras.collabora.co.uk (madras.collabora.co.uk [IPv6:2a00:1098:0:82:1000:25:2eeb:e5ab]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 986B0D40; Tue, 21 Nov 2023 04:50:57 -0800 (PST) Received: from IcarusMOD.eternityproject.eu (cola.collaboradmins.com [195.201.22.229]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: kholk11) by madras.collabora.co.uk (Postfix) with ESMTPSA id A17FD6607314; Tue, 21 Nov 2023 12:50:55 +0000 (GMT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=collabora.com; s=mail; t=1700571056; bh=HjqA+sAHeyELuvvhdsMlpINGaociXjYFjdm6q68a7V8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=asVihs0lKspnKojWxFlpYVRcUfG+duWidqbA5ziqx7fNXdoUpGLD1p71fUVyfL05f 5ySn/H+mo/46WeUGKUUcWGhoXN/JRFx7R9ic0F4ZKbYPneAkspQrY95jGjTaWHjxG6 2wYinIfHnmyLyq6WfYZqOy+GElxIx28jdM4rwBj+R6QEFck1tcEz3IKTQ8iFTZP2DS fS++It+Ta+hpLXJ5XYQ/L+HO9pxh9W1HQnHPPz2+mbCKrDV5kd58JwJINPLivS3yvK q/6+jYCq98uVkjOEfzsGsT5Pny+Q7zA3OF8xeTrc7B6Il4GgBM0yA27Mfeq9UEAeL8 eTWfIS7kLp6cA== From: AngeloGioacchino Del Regno To: matthias.bgg@gmail.com Cc: krzysztof.kozlowski+dt@linaro.org, conor+dt@kernel.org, robh+dt@kernel.org, angelogioacchino.delregno@collabora.com, p.zabel@pengutronix.de, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org, kernel@collabora.com, wenst@chromium.org Subject: [PATCH v3 05/20] soc: mediatek: mtk-svs: Reduce memory footprint of struct svs_bank Date: Tue, 21 Nov 2023 13:50:29 +0100 Message-ID: <20231121125044.78642-6-angelogioacchino.delregno@collabora.com> X-Mailer: git-send-email 2.42.0 In-Reply-To: <20231121125044.78642-1-angelogioacchino.delregno@collabora.com> References: <20231121125044.78642-1-angelogioacchino.delregno@collabora.com> Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Many 32-bit members of this struct can be size reduced to either 16-bit or even 8-bit, for a total saving of ~61 bytes per bank. Keeping in mind that one SoC declares at least two banks, this brings a minimum of ~122 bytes saving (depending on compiler optimization). Signed-off-by: AngeloGioacchino Del Regno --- drivers/soc/mediatek/mtk-svs.c | 51 +++++++++++++++++----------------- 1 file changed, 26 insertions(+), 25 deletions(-) diff --git a/drivers/soc/mediatek/mtk-svs.c b/drivers/soc/mediatek/mtk-svs.c index 1c7592fd6ae7..6c27fb523bfa 100644 --- a/drivers/soc/mediatek/mtk-svs.c +++ b/drivers/soc/mediatek/mtk-svs.c @@ -456,13 +456,13 @@ struct svs_bank { char *buck_name; char *tzone_name; enum svsb_phase phase; - s32 volt_od; + short int volt_od; u32 reg_data[SVSB_PHASE_MAX][SVS_REG_MAX]; u32 pm_runtime_enabled_count; - u32 mode_support; + u8 mode_support; u32 freq_base; u32 turn_freq_base; - u32 vboot; + u8 vboot; u32 opp_dfreq[MAX_OPP_ENTRIES]; u32 opp_dvolt[MAX_OPP_ENTRIES]; u32 freq_pct[MAX_OPP_ENTRIES]; @@ -470,36 +470,36 @@ struct svs_bank { u32 volt_step; u32 volt_base; u32 volt_flags; - u32 vmax; - u32 vmin; + u8 vmax; + u8 vmin; u32 age_config; - u32 age_voffset_in; + u16 age_voffset_in; u32 dc_config; - u32 dc_voffset_in; - u32 dvt_fixed; - u32 vco; - u32 chk_shift; + u16 dc_voffset_in; + u8 dvt_fixed; + u8 vco; + u8 chk_shift; u32 core_sel; - u32 opp_count; + u8 opp_count; u32 int_st; - u32 sw_id; - u32 cpu_id; + u8 sw_id; + u8 cpu_id; u32 ctl0; u32 temp; u32 tzone_htemp; - u32 tzone_htemp_voffset; + u16 tzone_htemp_voffset; u32 tzone_ltemp; - u32 tzone_ltemp_voffset; - u32 bts; - u32 mts; - u32 bdes; - u32 mdes; - u32 mtdes; - u32 dcbdet; - u32 dcmdet; + u16 tzone_ltemp_voffset; + u16 bts; + u16 mts; + u16 bdes; + u16 mdes; + u8 mtdes; + u8 dcbdet; + u8 dcmdet; u32 turn_pt; u32 vbin_turn_pt; - u32 type; + u8 type; }; static u32 percent(u32 numerator, u32 denominator) @@ -1267,6 +1267,7 @@ static inline void svs_error_isr_handler(struct svs_platform *svsp) static inline void svs_init01_isr_handler(struct svs_platform *svsp) { struct svs_bank *svsb = svsp->pbank; + u32 val; dev_info(svsb->dev, "%s: VDN74~30:0x%08x~0x%08x, DC:0x%08x\n", __func__, svs_readl_relaxed(svsp, VDESIGN74), @@ -1276,8 +1277,8 @@ static inline void svs_init01_isr_handler(struct svs_platform *svsp) svs_save_bank_register_data(svsp, SVSB_PHASE_INIT01); svsb->phase = SVSB_PHASE_INIT01; - svsb->dc_voffset_in = ~(svs_readl_relaxed(svsp, DCVALUES) & - GENMASK(15, 0)) + 1; + val = ~(svs_readl_relaxed(svsp, DCVALUES) & GENMASK(15, 0)) + 1; + svsb->dc_voffset_in = val & GENMASK(15, 0); if (svsb->volt_flags & SVSB_INIT01_VOLT_IGNORE || (svsb->dc_voffset_in & SVSB_DC_SIGNED_BIT && svsb->volt_flags & SVSB_INIT01_VOLT_INC_ONLY))