From a98c30fdc00e146daed013598f10708d6b0ef11e Mon Sep 17 00:00:00 2001 From: Tomas Winkler Date: Tue, 19 Apr 2022 12:33:09 -0700 Subject: mei: add support for graphics system controller (gsc) devices GSC is a graphics system controller, based on CSE, it provides a chassis controller for graphics discrete cards, as well as it supports media protection on selected devices. mei_gsc binds to a auxiliary devices exposed by Intel discrete driver i915. v2: fix error check in mei_gsc_probe v3: update MODULE_LICENSE ("GPL" is preferred over "GPL v2" and they both map to GPL version 2) Signed-off-by: Alexander Usyskin Signed-off-by: Tomas Winkler Reviewed-by: Daniele Ceraolo Spurio Signed-off-by: Daniele Ceraolo Spurio Acked-by: Rodrigo Vivi #v3 Link: https://patchwork.freedesktop.org/patch/msgid/20220419193314.526966-3-daniele.ceraolospurio@intel.com --- drivers/misc/mei/hw-me.c | 27 +++++++++++++++++++++++++-- 1 file changed, 25 insertions(+), 2 deletions(-) (limited to 'drivers/misc/mei/hw-me.c') diff --git a/drivers/misc/mei/hw-me.c b/drivers/misc/mei/hw-me.c index 719fee9af156..03945d3b34da 100644 --- a/drivers/misc/mei/hw-me.c +++ b/drivers/misc/mei/hw-me.c @@ -1226,6 +1226,7 @@ irqreturn_t mei_me_irq_quick_handler(int irq, void *dev_id) me_intr_disable(dev, hcsr); return IRQ_WAKE_THREAD; } +EXPORT_SYMBOL_GPL(mei_me_irq_quick_handler); /** * mei_me_irq_thread_handler - function called after ISR to handle the interrupt @@ -1326,6 +1327,7 @@ end: mutex_unlock(&dev->device_lock); return IRQ_HANDLED; } +EXPORT_SYMBOL_GPL(mei_me_irq_thread_handler); static const struct mei_hw_ops mei_me_hw_ops = { @@ -1440,6 +1442,12 @@ static bool mei_me_fw_type_sps_ign(const struct pci_dev *pdev) #define MEI_CFG_KIND_ITOUCH \ .kind = "itouch" +#define MEI_CFG_TYPE_GSC \ + .kind = "gsc" + +#define MEI_CFG_TYPE_GSCFI \ + .kind = "gscfi" + #define MEI_CFG_FW_SPS_IGN \ .quirk_probe = mei_me_fw_type_sps_ign @@ -1572,6 +1580,18 @@ static const struct mei_cfg mei_me_pch15_sps_cfg = { MEI_CFG_FW_SPS_IGN, }; +/* Graphics System Controller */ +static const struct mei_cfg mei_me_gsc_cfg = { + MEI_CFG_TYPE_GSC, + MEI_CFG_PCH8_HFS, +}; + +/* Graphics System Controller Firmware Interface */ +static const struct mei_cfg mei_me_gscfi_cfg = { + MEI_CFG_TYPE_GSCFI, + MEI_CFG_PCH8_HFS, +}; + /* * mei_cfg_list - A list of platform platform specific configurations. * Note: has to be synchronized with enum mei_cfg_idx. @@ -1592,6 +1612,8 @@ static const struct mei_cfg *const mei_cfg_list[] = { [MEI_ME_PCH12_SPS_ITOUCH_CFG] = &mei_me_pch12_itouch_sps_cfg, [MEI_ME_PCH15_CFG] = &mei_me_pch15_cfg, [MEI_ME_PCH15_SPS_CFG] = &mei_me_pch15_sps_cfg, + [MEI_ME_GSC_CFG] = &mei_me_gsc_cfg, + [MEI_ME_GSCFI_CFG] = &mei_me_gscfi_cfg, }; const struct mei_cfg *mei_me_get_cfg(kernel_ulong_t idx) @@ -1602,7 +1624,8 @@ const struct mei_cfg *mei_me_get_cfg(kernel_ulong_t idx) return NULL; return mei_cfg_list[idx]; -}; +} +EXPORT_SYMBOL_GPL(mei_me_get_cfg); /** * mei_me_dev_init - allocates and initializes the mei device structure @@ -1637,4 +1660,4 @@ struct mei_device *mei_me_dev_init(struct device *parent, return dev; } - +EXPORT_SYMBOL_GPL(mei_me_dev_init); -- cgit v1.2.3