From: Christian König christian.koenig@amd.com
For setting clocks with VCE v1.0
v2: (chk) rebased on current tree
Signed-off-by: Christian König christian.koenig@amd.com Signed-off-by: Alex Deucher alexander.deucher@amd.com --- drivers/gpu/drm/radeon/radeon.h | 7 ++ drivers/gpu/drm/radeon/radeon_asic.c | 1 + drivers/gpu/drm/radeon/radeon_asic.h | 1 + drivers/gpu/drm/radeon/si.c | 121 +++++++++++++++++++++++++++++++++++ drivers/gpu/drm/radeon/sid.h | 27 ++++++++ 5 files changed, 157 insertions(+)
diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h index 34c51a2..38603b1 100644 --- a/drivers/gpu/drm/radeon/radeon.h +++ b/drivers/gpu/drm/radeon/radeon.h @@ -2577,6 +2577,13 @@ static inline struct radeon_fence *to_radeon_fence(struct fence *f) tmp_ |= ((val) & ~(mask)); \ WREG32_PLL(reg, tmp_); \ } while (0) +#define WREG32_SMC_P(reg, val, mask) \ + do { \ + uint32_t tmp_ = RREG32_SMC(reg); \ + tmp_ &= (mask); \ + tmp_ |= ((val) & ~(mask)); \ + WREG32_SMC(reg, tmp_); \ + } while (0) #define DREG32_SYS(sqf, rdev, reg) seq_printf((sqf), #reg " : 0x%08X\n", r100_mm_rreg((rdev), (reg), false)) #define RREG32_IO(reg) r100_io_rreg(rdev, (reg)) #define WREG32_IO(reg, v) r100_io_wreg(rdev, (reg), (v)) diff --git a/drivers/gpu/drm/radeon/radeon_asic.c b/drivers/gpu/drm/radeon/radeon_asic.c index 8dbf508..4227b30 100644 --- a/drivers/gpu/drm/radeon/radeon_asic.c +++ b/drivers/gpu/drm/radeon/radeon_asic.c @@ -1973,6 +1973,7 @@ static struct radeon_asic si_asic = { .set_pcie_lanes = &r600_set_pcie_lanes, .set_clock_gating = NULL, .set_uvd_clocks = &si_set_uvd_clocks, + .set_vce_clocks = &si_set_vce_clocks, .get_temperature = &si_get_temp, }, .dpm = { diff --git a/drivers/gpu/drm/radeon/radeon_asic.h b/drivers/gpu/drm/radeon/radeon_asic.h index cb7787f..0469d44 100644 --- a/drivers/gpu/drm/radeon/radeon_asic.h +++ b/drivers/gpu/drm/radeon/radeon_asic.h @@ -745,6 +745,7 @@ void si_dma_vm_flush(struct radeon_device *rdev, struct radeon_ring *ring, u32 si_get_xclk(struct radeon_device *rdev); uint64_t si_get_gpu_clock_counter(struct radeon_device *rdev); int si_set_uvd_clocks(struct radeon_device *rdev, u32 vclk, u32 dclk); +int si_set_vce_clocks(struct radeon_device *rdev, u32 evclk, u32 ecclk); int si_get_temp(struct radeon_device *rdev); int si_get_allowed_info_register(struct radeon_device *rdev, u32 reg, u32 *val); diff --git a/drivers/gpu/drm/radeon/si.c b/drivers/gpu/drm/radeon/si.c index b1d74bc..6ff78bc 100644 --- a/drivers/gpu/drm/radeon/si.c +++ b/drivers/gpu/drm/radeon/si.c @@ -7675,3 +7675,124 @@ static void si_program_aspm(struct radeon_device *rdev) } } } + +int si_vce_send_vcepll_ctlreq(struct radeon_device *rdev) +{ + unsigned i; + + /* make sure VCEPLL_CTLREQ is deasserted */ + WREG32_SMC_P(CG_VCEPLL_FUNC_CNTL, 0, ~UPLL_CTLREQ_MASK); + + mdelay(10); + + /* assert UPLL_CTLREQ */ + WREG32_SMC_P(CG_VCEPLL_FUNC_CNTL, UPLL_CTLREQ_MASK, ~UPLL_CTLREQ_MASK); + + /* wait for CTLACK and CTLACK2 to get asserted */ + for (i = 0; i < 100; ++i) { + uint32_t mask = UPLL_CTLACK_MASK | UPLL_CTLACK2_MASK; + if ((RREG32_SMC(CG_VCEPLL_FUNC_CNTL) & mask) == mask) + break; + mdelay(10); + } + + /* deassert UPLL_CTLREQ */ + WREG32_SMC_P(CG_VCEPLL_FUNC_CNTL, 0, ~UPLL_CTLREQ_MASK); + + if (i == 100) { + DRM_ERROR("Timeout setting UVD clocks!\n"); + return -ETIMEDOUT; + } + + return 0; +} + +int si_set_vce_clocks(struct radeon_device *rdev, u32 evclk, u32 ecclk) +{ + unsigned fb_div = 0, evclk_div = 0, ecclk_div = 0; + int r; + + /* bypass evclk and ecclk with bclk */ + WREG32_SMC_P(CG_VCEPLL_FUNC_CNTL_2, + EVCLK_SRC_SEL(1) | ECCLK_SRC_SEL(1), + ~(EVCLK_SRC_SEL_MASK | ECCLK_SRC_SEL_MASK)); + + /* put PLL in bypass mode */ + WREG32_SMC_P(CG_VCEPLL_FUNC_CNTL, VCEPLL_BYPASS_EN_MASK, + ~VCEPLL_BYPASS_EN_MASK); + + if (!evclk || !ecclk) { + /* keep the Bypass mode, put PLL to sleep */ + WREG32_SMC_P(CG_VCEPLL_FUNC_CNTL, VCEPLL_SLEEP_MASK, + ~VCEPLL_SLEEP_MASK); + return 0; + } + + r = radeon_uvd_calc_upll_dividers(rdev, evclk, ecclk, 125000, 250000, + 16384, 0x03FFFFFF, 0, 128, 5, + &fb_div, &evclk_div, &ecclk_div); + if (r) + return r; + + /* set RESET_ANTI_MUX to 0 */ + WREG32_SMC_P(CG_VCEPLL_FUNC_CNTL_5, 0, ~RESET_ANTI_MUX_MASK); + + /* set VCO_MODE to 1 */ + WREG32_SMC_P(CG_VCEPLL_FUNC_CNTL, VCEPLL_VCO_MODE_MASK, + ~VCEPLL_VCO_MODE_MASK); + + /* toggle VCEPLL_SLEEP to 1 then back to 0 */ + WREG32_SMC_P(CG_VCEPLL_FUNC_CNTL, VCEPLL_SLEEP_MASK, + ~VCEPLL_SLEEP_MASK); + WREG32_SMC_P(CG_VCEPLL_FUNC_CNTL, 0, ~VCEPLL_SLEEP_MASK); + + /* deassert VCEPLL_RESET */ + WREG32_SMC_P(CG_VCEPLL_FUNC_CNTL, 0, ~VCEPLL_RESET_MASK); + + mdelay(1); + + r = si_vce_send_vcepll_ctlreq(rdev); + if (r) + return r; + + /* assert VCEPLL_RESET again */ + WREG32_SMC_P(CG_VCEPLL_FUNC_CNTL, VCEPLL_RESET_MASK, ~VCEPLL_RESET_MASK); + + /* disable spread spectrum. */ + WREG32_SMC_P(CG_VCEPLL_SPREAD_SPECTRUM, 0, ~SSEN_MASK); + + /* set feedback divider */ + WREG32_SMC_P(CG_VCEPLL_FUNC_CNTL_3, VCEPLL_FB_DIV(fb_div), ~VCEPLL_FB_DIV_MASK); + + /* set ref divider to 0 */ + WREG32_SMC_P(CG_VCEPLL_FUNC_CNTL, 0, ~VCEPLL_REF_DIV_MASK); + + /* set PDIV_A and PDIV_B */ + WREG32_SMC_P(CG_VCEPLL_FUNC_CNTL_2, + VCEPLL_PDIV_A(evclk_div) | VCEPLL_PDIV_B(ecclk_div), + ~(VCEPLL_PDIV_A_MASK | VCEPLL_PDIV_B_MASK)); + + /* give the PLL some time to settle */ + mdelay(15); + + /* deassert PLL_RESET */ + WREG32_SMC_P(CG_VCEPLL_FUNC_CNTL, 0, ~VCEPLL_RESET_MASK); + + mdelay(15); + + /* switch from bypass mode to normal mode */ + WREG32_SMC_P(CG_VCEPLL_FUNC_CNTL, 0, ~VCEPLL_BYPASS_EN_MASK); + + r = si_vce_send_vcepll_ctlreq(rdev); + if (r) + return r; + + /* switch VCLK and DCLK selection */ + WREG32_SMC_P(CG_VCEPLL_FUNC_CNTL_2, + EVCLK_SRC_SEL(16) | ECCLK_SRC_SEL(16), + ~(EVCLK_SRC_SEL_MASK | ECCLK_SRC_SEL_MASK)); + + mdelay(100); + + return 0; +} diff --git a/drivers/gpu/drm/radeon/sid.h b/drivers/gpu/drm/radeon/sid.h index 3afac30..1630440 100644 --- a/drivers/gpu/drm/radeon/sid.h +++ b/drivers/gpu/drm/radeon/sid.h @@ -1917,4 +1917,31 @@ #define VCE_CMD_IB_AUTO 0x00000005 #define VCE_CMD_SEMAPHORE 0x00000006
+/* discrete vce clocks */ +#define CG_VCEPLL_FUNC_CNTL 0xc0030600 +# define VCEPLL_RESET_MASK 0x00000001 +# define VCEPLL_SLEEP_MASK 0x00000002 +# define VCEPLL_BYPASS_EN_MASK 0x00000004 +# define VCEPLL_CTLREQ_MASK 0x00000008 +# define VCEPLL_VCO_MODE_MASK 0x00000600 +# define VCEPLL_REF_DIV_MASK 0x003F0000 +# define VCEPLL_CTLACK_MASK 0x40000000 +# define VCEPLL_CTLACK2_MASK 0x80000000 +#define CG_VCEPLL_FUNC_CNTL_2 0xc0030601 +# define VCEPLL_PDIV_A(x) ((x) << 0) +# define VCEPLL_PDIV_A_MASK 0x0000007F +# define VCEPLL_PDIV_B(x) ((x) << 8) +# define VCEPLL_PDIV_B_MASK 0x00007F00 +# define EVCLK_SRC_SEL(x) ((x) << 20) +# define EVCLK_SRC_SEL_MASK 0x01F00000 +# define ECCLK_SRC_SEL(x) ((x) << 25) +# define ECCLK_SRC_SEL_MASK 0x3E000000 +#define CG_VCEPLL_FUNC_CNTL_3 0xc0030602 +# define VCEPLL_FB_DIV(x) ((x) << 0) +# define VCEPLL_FB_DIV_MASK 0x01FFFFFF +#define CG_VCEPLL_FUNC_CNTL_4 0xc0030603 +#define CG_VCEPLL_FUNC_CNTL_5 0xc0030604 +#define CG_VCEPLL_SPREAD_SPECTRUM 0xc0030606 +# define VCEPLL_SSEN_MASK 0x00000001 + #endif