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authorAlex Deucher <alexdeucher@gmail.com>2010-08-27 16:04:29 -0400
committerDave Airlie <airlied@redhat.com>2010-09-01 22:45:43 -0400
commitea39302b87b8d944d567ef29c0647c09da5743fa (patch)
tree6d7feb2c5113f4fab5dadb3f4c8e02769962c0c1 /drivers/gpu
parent95347871865ca5093c7e87a223274f7c3b5eccda (diff)
drm/radeon/kms/evergreen: work around bad data in some i2c tables
The 7th entry in a lot of evergreen i2c gpio tables is partially zeroed. Fix the entry. Should fix the missing ddc entry in: https://bugs.freedesktop.org/show_bug.cgi?id=29255 Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
Diffstat (limited to 'drivers/gpu')
-rw-r--r--drivers/gpu/drm/radeon/radeon_atombios.c27
1 files changed, 27 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/radeon_atombios.c b/drivers/gpu/drm/radeon/radeon_atombios.c
index 61141981880d..ebae14c4b768 100644
--- a/drivers/gpu/drm/radeon/radeon_atombios.c
+++ b/drivers/gpu/drm/radeon/radeon_atombios.c
@@ -85,6 +85,19 @@ static inline struct radeon_i2c_bus_rec radeon_lookup_i2c_gpio(struct radeon_dev
85 for (i = 0; i < num_indices; i++) { 85 for (i = 0; i < num_indices; i++) {
86 gpio = &i2c_info->asGPIO_Info[i]; 86 gpio = &i2c_info->asGPIO_Info[i];
87 87
88 /* some evergreen boards have bad data for this entry */
89 if (ASIC_IS_DCE4(rdev)) {
90 if ((i == 7) &&
91 (gpio->usClkMaskRegisterIndex == 0x1936) &&
92 (gpio->sucI2cId.ucAccess == 0)) {
93 gpio->sucI2cId.ucAccess = 0x97;
94 gpio->ucDataMaskShift = 8;
95 gpio->ucDataEnShift = 8;
96 gpio->ucDataY_Shift = 8;
97 gpio->ucDataA_Shift = 8;
98 }
99 }
100
88 if (gpio->sucI2cId.ucAccess == id) { 101 if (gpio->sucI2cId.ucAccess == id) {
89 i2c.mask_clk_reg = le16_to_cpu(gpio->usClkMaskRegisterIndex) * 4; 102 i2c.mask_clk_reg = le16_to_cpu(gpio->usClkMaskRegisterIndex) * 4;
90 i2c.mask_data_reg = le16_to_cpu(gpio->usDataMaskRegisterIndex) * 4; 103 i2c.mask_data_reg = le16_to_cpu(gpio->usDataMaskRegisterIndex) * 4;
@@ -147,6 +160,20 @@ void radeon_atombios_i2c_init(struct radeon_device *rdev)
147 for (i = 0; i < num_indices; i++) { 160 for (i = 0; i < num_indices; i++) {
148 gpio = &i2c_info->asGPIO_Info[i]; 161 gpio = &i2c_info->asGPIO_Info[i];
149 i2c.valid = false; 162 i2c.valid = false;
163
164 /* some evergreen boards have bad data for this entry */
165 if (ASIC_IS_DCE4(rdev)) {
166 if ((i == 7) &&
167 (gpio->usClkMaskRegisterIndex == 0x1936) &&
168 (gpio->sucI2cId.ucAccess == 0)) {
169 gpio->sucI2cId.ucAccess = 0x97;
170 gpio->ucDataMaskShift = 8;
171 gpio->ucDataEnShift = 8;
172 gpio->ucDataY_Shift = 8;
173 gpio->ucDataA_Shift = 8;
174 }
175 }
176
150 i2c.mask_clk_reg = le16_to_cpu(gpio->usClkMaskRegisterIndex) * 4; 177 i2c.mask_clk_reg = le16_to_cpu(gpio->usClkMaskRegisterIndex) * 4;
151 i2c.mask_data_reg = le16_to_cpu(gpio->usDataMaskRegisterIndex) * 4; 178 i2c.mask_data_reg = le16_to_cpu(gpio->usDataMaskRegisterIndex) * 4;
152 i2c.en_clk_reg = le16_to_cpu(gpio->usClkEnRegisterIndex) * 4; 179 i2c.en_clk_reg = le16_to_cpu(gpio->usClkEnRegisterIndex) * 4;