From: asheplyakov@yandex.ru To: devel@lists.altlinux.org Cc: Vitaly Chikunov <vt@altlinux.org>, Alexey Sheplyakov <asheplyakov@basealt.ru>, Igor Chudov <nir@basealt.ru>, Evgeny Sinelnikov <sin@basealt.ru> Subject: [devel] [PATCH 06/35] hwmon: bt1-pvt: define pvt_readl/pvt_writel for Baikal-M SoC Date: Fri, 20 May 2022 20:28:20 +0400 Message-ID: <20220520162849.1554351-7-asheplyakov@yandex.ru> (raw) In-Reply-To: <20220520162849.1554351-1-asheplyakov@yandex.ru> From: Alexey Sheplyakov <asheplyakov@basealt.ru> On Baikal-M Linux has to call into firmware (ARM-TF) to access PVT registers. Signed-off-by: Alexey Sheplyakov <asheplyakov@basealt.ru> X-feature-Baikal-M --- drivers/hwmon/bt1-pvt.c | 23 +++++++++++++++++++++++ drivers/hwmon/bt1-pvt.h | 8 ++++++++ 2 files changed, 31 insertions(+) diff --git a/drivers/hwmon/bt1-pvt.c b/drivers/hwmon/bt1-pvt.c index c05fe8df0839..2f2a222bd136 100644 --- a/drivers/hwmon/bt1-pvt.c +++ b/drivers/hwmon/bt1-pvt.c @@ -29,6 +29,9 @@ #include <linux/seqlock.h> #include <linux/sysfs.h> #include <linux/types.h> +#ifdef CONFIG_ARM64 +#include <linux/arm-smccc.h> +#endif #include "bt1-pvt.h" @@ -138,6 +141,7 @@ static long pvt_calc_poly(const struct pvt_poly *poly, long data) return ret / poly->total_divider; } +#ifdef BT1_PVT_DIRECT_REG_ACCESS static inline u32 pvt_readl(struct pvt_hwmon const *pvt, int reg) { return readl(pvt->regs + reg); } @@ -149,6 +153,25 @@ static inline u32 pvt_readl_relaxed(struct pvt_hwmon const *pvt, int reg) { static inline void pvt_writel(u32 data, struct pvt_hwmon const *pvt, int reg) { writel(data, pvt->regs + reg); } +#else +static inline u32 pvt_readl(struct pvt_hwmon const *pvt, int reg) { + struct arm_smccc_res res; + arm_smccc_smc(BAIKAL_SMC_PVT_ID, PVT_READ, pvt->pvt_id, reg, + 0, 0, 0, 0, &res); + return res.a0; +} + +static inline u32 pvt_readl_relaxed(struct pvt_hwmon const *pvt, int reg) { + return pvt_readl(pvt, reg); +} + +static inline void pvt_writel(u32 data, struct pvt_hwmon const *pvt, int reg) { + struct arm_smccc_res res; + arm_smccc_smc(BAIKAL_SMC_PVT_ID, PVT_WRITE, pvt->pvt_id, reg, + data, 0, 0, 0, &res); +} +#endif + static inline u32 pvt_update(struct pvt_hwmon *pvt, int reg, u32 mask, u32 data) { u32 old; diff --git a/drivers/hwmon/bt1-pvt.h b/drivers/hwmon/bt1-pvt.h index 93b8dd5e7c94..0cea95b01c13 100644 --- a/drivers/hwmon/bt1-pvt.h +++ b/drivers/hwmon/bt1-pvt.h @@ -101,6 +101,13 @@ # define PVT_TOUT_DEF 0 #endif +#define BAIKAL_SMC_PVT_ID 0x82000001 +#define PVT_READ 0 +#define PVT_WRITE 1 +#ifndef CONFIG_ARM64 +#define BT1_PVT_DIRECT_REG_ACCESS +#endif + /* * enum pvt_sensor_type - Baikal-T1 PVT sensor types (correspond to each PVT * sampling mode) @@ -217,6 +224,7 @@ struct pvt_hwmon { enum pvt_sensor_type sensor; struct pvt_cache cache[PVT_SENSORS_NUM]; ktime_t timeout; + int pvt_id; }; /* -- 2.32.0
next prev parent reply other threads:[~2022-05-20 16:28 UTC|newest] Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top 2022-05-20 16:28 [devel] kernel-image-un-def: Baikal-M asheplyakov 2022-05-20 16:28 ` [devel] [PATCH 01/35] net: stmmac: inital support of Baikal-T1/M SoCs GMAC asheplyakov 2022-05-20 16:28 ` [devel] [PATCH 02/35] dt-bindings: dwmac: Add bindings for Baikal-T1/M SoCs asheplyakov 2022-05-20 16:28 ` [devel] [PATCH 03/35] net: stmmac: custom mdio reset for some Baikal-M boards asheplyakov 2022-05-20 16:28 ` [devel] [PATCH 04/35] net: dwmac-baikal: added compatible strings asheplyakov 2022-05-20 16:28 ` [devel] [PATCH 05/35] hwmon: bt1-pvt: access registers via pvt_{readl, writel} helpers asheplyakov 2022-05-20 16:28 ` asheplyakov [this message] 2022-05-20 16:28 ` [devel] [PATCH 07/35] hwmon: bt1-pvt: adjusted probing for Baikal-M SoC asheplyakov 2022-05-20 16:28 ` [devel] [PATCH 08/35] hwmon: bt1-pvt: added compatible baikal,pvt asheplyakov 2022-05-20 16:28 ` [devel] [PATCH 09/35] clk: added Baikal-M clock management unit driver asheplyakov 2022-05-20 16:28 ` [devel] [PATCH 10/35] cpufreq-dt: don't load on Baikal-M SoC asheplyakov 2022-05-20 16:28 ` [devel] [PATCH 11/35] usb: dwc3: of-simple: added compatible string for " asheplyakov 2022-05-20 16:28 ` [devel] [PATCH 12/35] arm64: Enable armv8 based Baikal-M SoC support asheplyakov 2022-05-20 16:28 ` [devel] [PATCH 13/35] drm: new bridge driver - stdp4028 asheplyakov 2022-05-20 16:28 ` [devel] [PATCH 14/35] drm: added Baikal-M SoC video display unit driver asheplyakov 2022-05-20 16:28 ` [devel] [PATCH 15/35] dw-hdmi-ahb-audio: support Baikal-M SoC asheplyakov 2022-05-20 16:28 ` [devel] [PATCH 16/35] Added TF307/TF306 board management controller driver asheplyakov 2022-05-20 16:28 ` [devel] [PATCH 17/35] ALSA: hda: Baikal-M support asheplyakov 2022-05-20 16:28 ` [devel] [PATCH 18/35] [rejected] serial: 8250_dw: verify clock rate in dw8250_set_termios asheplyakov 2022-05-20 16:53 ` Andy Shevchenko 2022-05-20 16:28 ` [devel] [PATCH 19/35] drm/panfrost: forcibly set dma-coherent on Baikal-M asheplyakov 2022-05-20 16:28 ` [devel] [PATCH 20/35] drm/panfrost: disable devfreq " asheplyakov 2022-05-20 16:28 ` [devel] [PATCH 21/35] pm: disable all sleep states on Baikal-M based boards asheplyakov 2022-05-20 16:28 ` [devel] [PATCH 22/35] arm64-stub: fixed secondary cores boot on Baikal-M SoC asheplyakov 2022-05-20 16:28 ` [devel] [PATCH 23/35] efi-rtc: avoid calling efi.get_time " asheplyakov 2022-05-20 16:28 ` [devel] [PATCH 24/35] net: fwnode_get_phy_id: consider all compatible strings asheplyakov 2022-05-20 16:28 ` [devel] [PATCH 25/35] (BROKEN) dwc-i2s: support Baikal-M SoC asheplyakov 2022-05-20 16:28 ` [devel] [PATCH 26/35] input: added TF307 serio PS/2 emulator driver asheplyakov 2022-05-20 16:28 ` [devel] [PATCH 27/35] arm64: added Baikal-M SoC and TF307 board device tree asheplyakov 2022-05-20 16:28 ` [devel] [PATCH 28/35] arm64: device tree: baikal: mark GPU as dma-coherent asheplyakov 2022-05-20 16:28 ` [devel] [PATCH 29/35] arm64: device tree: Baikal-M: fixed PHY binding description asheplyakov 2022-05-20 16:28 ` [devel] [PATCH 30/35] arm64: device tree: Baikal-M: fixed gpio alias asheplyakov 2022-05-20 16:28 ` [devel] [PATCH 31/35] arm64: device tree: Baikal-M: fixed GPU opp_table asheplyakov 2022-05-20 16:28 ` [devel] [PATCH 32/35] arm64: device tree: Baikal-M: fixed CPUs opp_table asheplyakov 2022-05-20 16:28 ` [devel] [PATCH 33/35] arm64: defconfig for Baikal-M support testing asheplyakov 2022-05-20 16:28 ` [devel] [PATCH 34/35] config-aarch64: enable more Baikal-M related drivers asheplyakov 2022-05-20 16:28 ` [devel] [PATCH 35/35] 1:5.17.9-alt2 asheplyakov 2022-05-21 4:04 ` P X 2022-05-21 16:50 ` Alexey Sheplyakov 2022-05-21 16:55 ` [devel] devel-kernel@ Антон Мидюков 2022-05-22 5:51 ` [devel] [PATCH 35/35] 1:5.17.9-alt2 Dmitry V. Levin 2022-05-23 8:51 ` Alexey Sheplyakov 2022-05-23 9:58 ` Dmitry V. Levin 2022-05-23 11:21 ` Alexey Gladkov 2022-05-23 9:47 ` [devel] Baikal-M patches for et101, aqbm1000, tf307 Evgeny Sinelnikov
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