On 03/14/2015 01:15 AM, "Stéphane Viau" wrote:
Hi,Hi, On 03/09/2015 06:41 PM, Stephane Viau wrote:This change adds the hw configuration for msm8x16 chipsets in mdp5_cfg module. Note that only one external display interface is present in this configuration (DSI) but has not been enabled yet. It will be enabled once drm/msm driver supports DSI connectors. Signed-off-by: Stephane Viau <sv...@codeaurora.org> --- drivers/gpu/drm/msm/mdp/mdp5/mdp5_cfg.c | 51 ++++++++++++++++++++++++++++++++- 1 file changed, 50 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_cfg.c b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_cfg.c index 96ea6dd..9ff7ac1 100644 --- a/drivers/gpu/drm/msm/mdp/mdp5/mdp5_cfg.c +++ b/drivers/gpu/drm/msm/mdp/mdp5/mdp5_cfg.c @@ -1,5 +1,5 @@ /* - * Copyright (c) 2014 The Linux Foundation. All rights reserved. + * Copyright (c) 2014-2015 The Linux Foundation. All rights reserved. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 and @@ -150,10 +150,59 @@ const struct mdp5_cfg_hw apq8084_config = { .max_clk = 320000000, }; +const struct mdp5_cfg_hw msm8x16_config = { + .name = "msm8x16", + .mdp = { + .count = 1, + .base = { 0x01000 }, + }, + .smp = { + .mmb_count = 8, + .mmb_size = 8192, + .clients = { + [SSPP_VIG0] = 1, [SSPP_DMA0] = 4, + [SSPP_RGB0] = 7, [SSPP_RGB1] = 8, + }, + }, + .ctl = { + .count = 5, + .base = { 0x02000, 0x02200, 0x02400, 0x02600, 0x02800 }, + }, + .pipe_vig = { + .count = 1, + .base = { 0x05000 }, + }, + .pipe_rgb = { + .count = 2, + .base = { 0x15000, 0x17000 }, + }, + .pipe_dma = { + .count = 1, + .base = { 0x25000 }, + }, + .lm = { + .count = 2, /* LM0 and LM3 */ + .base = { 0x45000, 0x48000 }, + .nb_stages = 5, + }, + .dspp = { + .count = 1, + .base = { 0x55000 }, + + }, + .intf = { + .count = 1, /* INTF_1 */ + .base = { 0x6B800 },We would need to put the other non-existent INTF_0, INTF_2 and INTF_3 base addresses here too, so that the writes to REG_MDP5_INTF_TIMING_ENGINE_EN in the patch "Make the intf connection in config module" access the correct registers.You are referring here to the discussion we had in "drm/msm/mdp5: Make the intf connection in config module"[1]... Let me clarify: We see these faults when interfaces are *present* but not *supported* by the driver, where: - *present* means that the interfaces are physically implemented in HW and therefore need to be reflected by "intf.base" addresses - *supported* means that the msm KMS driver is actually able to drive an interface If you look at mdp5_cfg.c in "drm/msm/mdp5: Make the intf connection in config module"[1], 4 interfaces (intf.base) are present (for apq8084), but only 2 are supported (intfs[])... What I meant is that even though our driver cannot support all interfaces present in a chip, we still need to disable them in mdp5_kms_init(). (BTW, this is probably due to my bootloader enabling the DSI whereas the msm KMS driver does not support it as of yet - and thus leads to artifacts/underflow on my eDP panel.)
Okay, I get it now. I think I wasn't sure about whether INTF_DISABLED represents *present* or *supported*. Thanks for the clarification.
So to answer your comment, it doesn't make too much sense to define base addresses for interfaces that are not present in a chip. Instead I'd prefer to check if intf.base is not NULL before writing in REG_MDP5_INTF_TIMING_ENGINE_EN registers.. and avoid some INVALID_INDEX BUGs ;-).
That sounds good. Thanks. Archit -- Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, a Linux Foundation Collaborative Project -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
