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Fri, 03 Feb 2023 04:32:12 -0800 (PST) Message-ID: Date: Fri, 3 Feb 2023 13:32:11 +0100 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.6.1 Content-Language: en-US To: Markus Schneider-Pargmann , Rob Herring , Krzysztof Kozlowski Cc: Chun-Jie Chen , AngeloGioacchino Del Regno , Fabien Parent , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org References: <20230105170735.1637416-1-msp@baylibre.com> <20230105170735.1637416-4-msp@baylibre.com> From: Matthias Brugger Subject: Re: [PATCH 3/8] soc: mediatek: pm-domains: Create bus protection operation functions In-Reply-To: <20230105170735.1637416-4-msp@baylibre.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230203_043217_416957_3FED4643 X-CRM114-Status: GOOD ( 19.63 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org On 05/01/2023 18:07, Markus Schneider-Pargmann wrote: > Separate the register access used for bus protection enable/disable into > their own functions. These will be used later for WAY_EN bits. > > Signed-off-by: Markus Schneider-Pargmann > --- > drivers/soc/mediatek/mtk-pm-domains.c | 68 +++++++++++++++------------ > 1 file changed, 39 insertions(+), 29 deletions(-) > > diff --git a/drivers/soc/mediatek/mtk-pm-domains.c b/drivers/soc/mediatek/mtk-pm-domains.c > index 4333cd297405..999e1f6c86b0 100644 > --- a/drivers/soc/mediatek/mtk-pm-domains.c > +++ b/drivers/soc/mediatek/mtk-pm-domains.c > @@ -117,26 +117,50 @@ static int scpsys_sram_disable(struct scpsys_domain *pd) > MTK_POLL_TIMEOUT); > } > > +static int scpsys_bus_protect_clear(const struct scpsys_bus_prot_data *bpd, > + struct regmap *regmap) > +{ > + u32 val; > + u32 sta_mask = bpd->bus_prot_sta_mask; > + > + if (bpd->bus_prot_reg_update) > + regmap_clear_bits(regmap, bpd->bus_prot_clr, bpd->bus_prot_set_clr_mask); > + else > + regmap_write(regmap, bpd->bus_prot_clr, bpd->bus_prot_set_clr_mask); > + > + if (bpd->ignore_clr_ack) > + return 0; > + > + return regmap_read_poll_timeout(regmap, bpd->bus_prot_sta, > + val, !(val & sta_mask), > + MTK_POLL_DELAY_US, MTK_POLL_TIMEOUT); > +} > + NIT: please move this function below static int scpsys_bus_protect_enable(struct scpsys_domain *pd) {...} This allows for better readability. > +static int scpsys_bus_protect_set(const struct scpsys_bus_prot_data *bpd, > + struct regmap *regmap) > +{ > + u32 val; > + u32 sta_mask = bpd->bus_prot_sta_mask; > + > + if (bpd->bus_prot_reg_update) > + regmap_set_bits(regmap, bpd->bus_prot_set, bpd->bus_prot_set_clr_mask); > + else > + regmap_write(regmap, bpd->bus_prot_set, bpd->bus_prot_set_clr_mask); > + > + return regmap_read_poll_timeout(regmap, bpd->bus_prot_sta, > + val, (val & sta_mask) == sta_mask, > + MTK_POLL_DELAY_US, MTK_POLL_TIMEOUT); > +} > + > static int _scpsys_bus_protect_enable(const struct scpsys_bus_prot_data *bpd, struct regmap *regmap) > { > int i, ret; > > for (i = 0; i < SPM_MAX_BUS_PROT_DATA; i++) { > - u32 val; > - u32 set_clr_mask = bpd[i].bus_prot_set_clr_mask; > - u32 sta_mask = bpd[i].bus_prot_sta_mask; > - > - if (!set_clr_mask) > + if (!bpd[i].bus_prot_set_clr_mask) > break; > > - if (bpd[i].bus_prot_reg_update) > - regmap_set_bits(regmap, bpd[i].bus_prot_set, set_clr_mask); > - else > - regmap_write(regmap, bpd[i].bus_prot_set, set_clr_mask); > - > - ret = regmap_read_poll_timeout(regmap, bpd[i].bus_prot_sta, > - val, (val & sta_mask) == sta_mask, > - MTK_POLL_DELAY_US, MTK_POLL_TIMEOUT); > + ret = scpsys_bus_protect_set(&bpd[i], regmap); > if (ret) > return ret; > } > @@ -161,24 +185,10 @@ static int _scpsys_bus_protect_disable(const struct scpsys_bus_prot_data *bpd, > int i, ret; > > for (i = SPM_MAX_BUS_PROT_DATA - 1; i >= 0; i--) { > - u32 val; > - u32 set_clr_mask = bpd[i].bus_prot_set_clr_mask; > - u32 sta_mask = bpd[i].bus_prot_sta_mask; > - > - if (!set_clr_mask) > - continue; > - > - if (bpd[i].bus_prot_reg_update) > - regmap_clear_bits(regmap, bpd[i].bus_prot_clr, set_clr_mask); > - else > - regmap_write(regmap, bpd[i].bus_prot_clr, set_clr_mask); > - > - if (bpd[i].ignore_clr_ack) > + if (!bpd[i].bus_prot_set_clr_mask) > continue; > > - ret = regmap_read_poll_timeout(regmap, bpd[i].bus_prot_sta, > - val, !(val & sta_mask), > - MTK_POLL_DELAY_US, MTK_POLL_TIMEOUT); > + ret = scpsys_bus_protect_clear(&bpd[i], regmap); > if (ret) > return ret; > }