From: Daniil Gnusarev <gnusarevda@basealt.ru> To: devel-kernel@lists.altlinux.org Subject: [d-kernel] [PATCH 13/39] hwmon: bt1-pvt: define pvt_readl/pvt_writel for Baikal-M SoC Date: Mon, 14 Oct 2024 18:01:54 +0400 Message-ID: <20241014140221.535985-14-gnusarevda@basealt.ru> (raw) In-Reply-To: <20241014140221.535985-1-gnusarevda@basealt.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 334d58ffea553..87873548ef7da 100644 --- a/drivers/hwmon/bt1-pvt.c +++ b/drivers/hwmon/bt1-pvt.c @@ -30,6 +30,9 @@ #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" @@ -115,6 +118,7 @@ static const struct polynomial poly_N_to_volt = { }; +#ifdef BT1_PVT_DIRECT_REG_ACCESS static inline u32 pvt_readl(struct pvt_hwmon const *pvt, int reg) { return readl(pvt->regs + reg); } @@ -126,6 +130,25 @@ 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 93b8dd5e7c944..0cea95b01c13c 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; }; /* -- 2.42.2
next prev parent reply other threads:[~2024-10-14 14:01 UTC|newest] Thread overview: 41+ messages / expand[flat|nested] mbox.gz Atom feed top 2024-10-14 14:01 [d-kernel] [PATCH 00/39] Support Baikal-M in un-def in p11 Daniil Gnusarev 2024-10-14 14:01 ` [d-kernel] [PATCH 01/39] Baikal Electronics SoC family Daniil Gnusarev 2024-10-14 14:01 ` [d-kernel] [PATCH 02/39] Clk: Add clock drivers for Baikal BE-M1000 with new firmware Daniil Gnusarev 2024-10-14 14:01 ` [d-kernel] [PATCH 03/39] USB: Add support for Baikal USB PHY Daniil Gnusarev 2024-10-14 14:01 ` [d-kernel] [PATCH 04/39] PCI: Add support for PCIe controller for Baikal BE-M1000 Daniil Gnusarev 2024-10-14 14:01 ` [d-kernel] [PATCH 05/39] AHCI SATA: Add support " Daniil Gnusarev 2024-10-14 14:01 ` [d-kernel] [PATCH 06/39] UART: Add support for UART " Daniil Gnusarev 2024-10-14 14:01 ` [d-kernel] [PATCH 07/39] cpufreq-dt: don't load on Baikal-M SoC Daniil Gnusarev 2024-10-14 14:01 ` [d-kernel] [PATCH 08/39] Sound: add support for Baikal BE-M1000 I2S Daniil Gnusarev 2024-10-14 14:01 ` [d-kernel] [PATCH 09/39] sound: baikal-i2s: paper over RX overrun warnings on Baikal-M Daniil Gnusarev 2024-10-14 14:01 ` [d-kernel] [PATCH 10/39] net: stmmac: support of Baikal-BE1000 SoCs GMAC Daniil Gnusarev 2024-10-14 14:01 ` [d-kernel] [PATCH 11/39] net: fwnode_get_phy_id: consider all compatible strings Daniil Gnusarev 2024-10-14 14:01 ` [d-kernel] [PATCH 12/39] hwmon: bt1-pvt: access registers via pvt_{readl, writel} helpers Daniil Gnusarev 2024-10-14 14:01 ` Daniil Gnusarev [this message] 2024-10-14 14:01 ` [d-kernel] [PATCH 14/39] hwmon: bt1-pvt: adjusted probing for Baikal-M SoC Daniil Gnusarev 2024-10-14 14:01 ` [d-kernel] [PATCH 15/39] hwmon: bt1-pvt: added compatible baikal, pvt Daniil Gnusarev 2024-10-14 14:01 ` [d-kernel] [PATCH 16/39] PVT: support register addressing with new firmware Daniil Gnusarev 2024-10-14 14:01 ` [d-kernel] [PATCH 17/39] drm: add Baikal-M SoC video display unit driver Daniil Gnusarev 2024-10-14 14:01 ` [d-kernel] [PATCH 18/39] drm/bridge: dw-hdmi: support ahb audio hw revision 0x2a Daniil Gnusarev 2024-10-14 14:02 ` [d-kernel] [PATCH 19/39] dt-bindings: dw-hdmi: added ahb-audio-regshift Daniil Gnusarev 2024-10-14 14:02 ` [d-kernel] [PATCH 20/39] drm/bridge: dw-hdmi: force ahb audio register offset for Baikal-M Daniil Gnusarev 2024-10-14 14:02 ` [d-kernel] [PATCH 21/39] drm/panfrost: forcibly set dma-coherent on Baikal-M Daniil Gnusarev 2024-10-14 14:02 ` [d-kernel] [PATCH 22/39] drm/panfrost: disable devfreq " Daniil Gnusarev 2024-10-14 14:02 ` [d-kernel] [PATCH 23/39] bmc: add board management controller driver Daniil Gnusarev 2024-10-14 14:02 ` [d-kernel] [PATCH 24/39] pm: disable all sleep states on Baikal-M based boards Daniil Gnusarev 2024-10-14 14:02 ` [d-kernel] [PATCH 25/39] sound: dwc-i2s: paper over RX overrun warnings on Baikal-M Daniil Gnusarev 2024-10-14 14:02 ` [d-kernel] [PATCH 26/39] sound: dwc-i2s: request all IRQs specified in device tree Daniil Gnusarev 2024-10-14 14:02 ` [d-kernel] [PATCH 27/39] usb: dwc3: of-simple: added compatible string for Baikal-M SoC Daniil Gnusarev 2024-10-14 14:02 ` [d-kernel] [PATCH 28/39] serial: 8250_dw: verify clock rate in dw8250_set_termios Daniil Gnusarev 2024-10-14 14:02 ` [d-kernel] [PATCH 29/39] clk: use "cmu-id" if there is no "reg" in devicetree Daniil Gnusarev 2024-10-14 14:02 ` [d-kernel] [PATCH 30/39] pci: baikal-pcie: driver compatibility with SDK earlier than 5.7 Daniil Gnusarev 2024-10-14 14:02 ` [d-kernel] [PATCH 31/39] pci: baikal-pcie: driver compatibility with SDK versions 5.4 Daniil Gnusarev 2024-10-14 14:02 ` [d-kernel] [PATCH 32/39] dw-pcie: refuse to load on Baikal-M with recent firmware Daniil Gnusarev 2024-10-14 14:02 ` [d-kernel] [PATCH 33/39] drm: baikal-vdu: driver compatibility with SDK earlier than 5.9 Daniil Gnusarev 2024-10-14 14:02 ` [d-kernel] [PATCH 34/39] input: new driver - serdev-serio Daniil Gnusarev 2024-10-14 14:02 ` [d-kernel] [PATCH 35/39] input: added TF307 serio PS/2 emulator driver Daniil Gnusarev 2024-10-14 14:02 ` [d-kernel] [PATCH 36/39] input: tp_serio: catch up API changes Daniil Gnusarev 2024-10-14 14:02 ` [d-kernel] [PATCH 37/39] drm: baikal-m: add vblank events, fix mode switching Daniil Gnusarev 2024-10-14 14:02 ` [d-kernel] [PATCH 38/39] drm: baikal-vdu: disable backlight driver loading Daniil Gnusarev 2024-10-14 14:02 ` [d-kernel] [PATCH 39/39] config-aarch64: enable more configs for baikal-m support Daniil Gnusarev 2024-10-14 14:28 ` [d-kernel] [PATCH 00/39] Support Baikal-M in un-def in p11 Vitaly Chikunov
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