On Mon, Mar 30, 2020 at 09:31:44AM +0530, Manna, Animesh wrote: > > On 28-03-2020 00:15, Manasi Navare wrote: > >On Tue, Mar 24, 2020 at 10:41:11AM +0530, Animesh Manna wrote: > >>DP_COMP_CTL and DP_COMP_PAT register used to program DP > >>compliance pattern. > >> > >>v1: Initial patch. > >>v2: used pipe instead of port in macro definition. [Manasi] > >>v3: used trans_offset for offset calculation. [Manasi] > >>v4: Used MMIO_PIPE for evenly spaced register offset instead > >>MMIO_PIPE2. [Ville] > >> > >>Reviewed-by: Manasi Navare <[email protected]> > >>Signed-off-by: Animesh Manna <[email protected]> > >>--- > >> drivers/gpu/drm/i915/i915_reg.h | 18 ++++++++++++++++++ > >> 1 file changed, 18 insertions(+) > >> > >>diff --git a/drivers/gpu/drm/i915/i915_reg.h > >>b/drivers/gpu/drm/i915/i915_reg.h > >>index 309cb7d96b35..465862ed2cf8 100644 > >>--- a/drivers/gpu/drm/i915/i915_reg.h > >>+++ b/drivers/gpu/drm/i915/i915_reg.h > >>@@ -9792,6 +9792,24 @@ enum skl_power_gate { > >> #define DDI_BUF_BALANCE_LEG_ENABLE (1 << 31) > >> #define DDI_BUF_TRANS_HI(port, i) _MMIO(_PORT(port, _DDI_BUF_TRANS_A, > >> _DDI_BUF_TRANS_B) + (i) * 8 + 4) > >>+/* DDI DP Compliance Control */ > >>+#define _DDI_DP_COMP_CTL_A 0x605F0 > >>+#define _DDI_DP_COMP_CTL_B 0x615F0 > >>+#define DDI_DP_COMP_CTL(pipe) _MMIO_PIPE(pipe, > >>_DDI_DP_COMP_CTL_A, _DDI_DP_COMP_CTL_B) > >This looks good now. > > > >>+#define DDI_DP_COMP_CTL_ENABLE (1 << 31) > >>+#define DDI_DP_COMP_CTL_D10_2 (0 << 28) > >>+#define DDI_DP_COMP_CTL_SCRAMBLED_0 (1 << 28) > >>+#define DDI_DP_COMP_CTL_PRBS7 (2 << 28) > >>+#define DDI_DP_COMP_CTL_CUSTOM80 (3 << 28) > >>+#define DDI_DP_COMP_CTL_HBR2 (4 << 28) > >>+#define DDI_DP_COMP_CTL_SCRAMBLED_1 (5 << 28) > >>+#define DDI_DP_COMP_CTL_HBR2_RESET (0xFC << 0) > >>+ > >>+/* DDI DP Compliance Pattern */ > >>+#define _DDI_DP_COMP_PAT_A 0x605F4 > >>+#define _DDI_DP_COMP_PAT_B 0x615F4 > >>+#define DDI_DP_COMP_PAT(pipe, i) _MMIO(_PIPE(pipe, > >>_DDI_DP_COMP_PAT_A, _DDI_DP_COMP_PAT_B) + (i) * 4) > >I still dont understand why we need to use that i argument here and why cant > >just pipe give us the desired offset > >with _MMIO_PIPE(pipe, _DDI_DP_COMP_PAT_A, _DDI_DP_COMP_PAT_B) ? > > > >IMO we should be able to use the above since even here the registers are > >evenly offseted (0x605F4, 0x615F4, 0x62F54, 0x63F54) > > The offset you mentioned above is for respective pipe A,B,C,D. How we can > write 80 bit custom pattern in it? For pipe A, need to write 0x605F4, > 0x605F8, 0x605FC for writing 80 bit .. rt? >
Ah okay its for making sure we write 32 bits at a time, got it thanks. With that Reviewed-by: Manasi Navare <[email protected]> Manasi > Regards, > Animesh > > > > >Regards > >Manasi > > > >>+ > >> /* Sideband Interface (SBI) is programmed indirectly, via > >> * SBI_ADDR, which contains the register offset; and SBI_DATA, > >> * which contains the payload */ > >>-- > >>2.24.0 > >> _______________________________________________ Intel-gfx mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/intel-gfx
