Attachment 103772 Details for Bug 74250 – patch 1/2

[patch] patch 1/2

0001-drm-radeon-atom-add-new-voltage-fetch-function-for-h.patch (text/plain), 2.68 KB, created by Alex Deucher on 2014-07-31 22:17:42 UTC

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Creator: Alex Deucher

Created: 2014-07-31 22:17:42 UTC

Size: 2.68 KB

patch

obsolete

>From 5063ae97caae1beeb38de0fcf8231e7ef0b0ffb6 Mon Sep 17 00:00:00 2001
>From: Alex Deucher <alexander.deucher@amd.com>
>Date: Thu, 31 Jul 2014 17:57:42 -0400
>Subject: [PATCH 1/2] drm/radeon/atom: add new voltage fetch function for
> hawaii
>
>Some hawaii boards use a different method for fetching the
>voltage information from the vbios.
>
>Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
>Cc: stable@vger.kernel.org
>---
> drivers/gpu/drm/radeon/radeon.h          |  3 +++
> drivers/gpu/drm/radeon/radeon_atombios.c | 35 ++++++++++++++++++++++++++++++++
> 2 files changed, 38 insertions(+)
>
>diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h
>index 85d9bca3..142cad6 100644
>--- a/drivers/gpu/drm/radeon/radeon.h
>+++ b/drivers/gpu/drm/radeon/radeon.h
>@@ -305,6 +305,9 @@ int radeon_atom_get_leakage_vddc_based_on_leakage_params(struct radeon_device *r
> 							 u16 *vddc, u16 *vddci,
> 							 u16 virtual_voltage_id,
> 							 u16 vbios_voltage_id);
>+int radeon_atom_get_voltage_evv(struct radeon_device *rdev,
>+				u16 virtual_voltage_id,
>+				u16 *voltage);
> int radeon_atom_round_to_true_voltage(struct radeon_device *rdev,
> 				      u8 voltage_type,
> 				      u16 nominal_voltage,
>diff --git a/drivers/gpu/drm/radeon/radeon_atombios.c b/drivers/gpu/drm/radeon/radeon_atombios.c
>index 2bbf016..92b2d8d 100644
>--- a/drivers/gpu/drm/radeon/radeon_atombios.c
>+++ b/drivers/gpu/drm/radeon/radeon_atombios.c
>@@ -3236,6 +3236,41 @@ int radeon_atom_get_leakage_vddc_based_on_leakage_params(struct radeon_device *r
> 	return 0;
> }
> 
>+union get_voltage_info {
>+	struct  _GET_VOLTAGE_INFO_INPUT_PARAMETER_V1_2 in;
>+	struct  _GET_EVV_VOLTAGE_INFO_OUTPUT_PARAMETER_V1_2 evv_out;
>+};
>+
>+int radeon_atom_get_voltage_evv(struct radeon_device *rdev,
>+				u16 virtual_voltage_id,
>+				u16 *voltage)
>+{
>+	int index = GetIndexIntoMasterTable(COMMAND, GetVoltageInfo);
>+	u32 entry_id;
>+	u32 count = rdev->pm.dpm.dyn_state.vddc_dependency_on_sclk.count;
>+	union get_voltage_info args;
>+
>+	for (entry_id = 0; entry_id < count; entry_id++) {
>+		if (rdev->pm.dpm.dyn_state.vddc_dependency_on_sclk.entries[entry_id].v ==
>+		    virtual_voltage_id)
>+			break;
>+	}
>+
>+	if (entry_id >= count)
>+		return -EINVAL;
>+
>+	args.in.ucVoltageType = VOLTAGE_TYPE_VDDC;
>+	args.in.ucVoltageMode = ATOM_GET_VOLTAGE_EVV_VOLTAGE;
>+	args.in.ulSCLKFreq =
>+		cpu_to_le32(rdev->pm.dpm.dyn_state.vddc_dependency_on_sclk.entries[entry_id].clk);
>+
>+	atom_execute_table(rdev->mode_info.atom_context, index, (uint32_t *)&args);
>+
>+	*voltage = le16_to_cpu(args.evv_out.usVoltageLevel);
>+
>+	return 0;
>+}
>+
> int radeon_atom_get_voltage_gpio_settings(struct radeon_device *rdev,
> 					  u16 voltage_level, u8 voltage_type,
> 					  u32 *gpio_value, u32 *gpio_mask)
>-- 
>1.8.3.1
>

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Attachments on bug 74250: 93090 | 93093 | 103772 | 103773 | 103938 | 103939 | 103940 | 103941

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