There are different types of PHY from one chipset to another, while
the DSI host controller is relatively consistent across platforms.
Also, the PLL inside PHY is providing the source of DSI byte and
pixel clocks, which are used by DSI host controller. Separated devices
for clock provider and clock consumer make DSI driver better fit into
common clock framework.
Signed-off-by: NHai Li <hali@codeaurora.org>
Signed-off-by: NRob Clark <robdclark@gmail.com>

This change activates PLL driver for DSI to work with
common clock framework.
Signed-off-by: NHai Li <hali@codeaurora.org>
Signed-off-by: NRob Clark <robdclark@gmail.com>

DSI byte clock and pixel clocks are sourced from DSI PLL.
This change adds the DSI PLL source clock driver under
common clock framework.

This change handles DSI 28nm PLL only.
Signed-off-by: NHai Li <hali@codeaurora.org>
Signed-off-by: NArchit Taneja <architt@codeaurora.org>
Signed-off-by: NStephane Viau <sviau@codeaurora.org>
Signed-off-by: NWentao Xu <wentaox@codeaurora.org>
Signed-off-by: NRob Clark <robdclark@gmail.com>

regulator_get() never returns NULL. There's no need for IS_ERR_OR_NULL()
Signed-off-by: NFabian Frederick <fabf@skynet.be>
Signed-off-by: NRob Clark <robdclark@gmail.com>

Some DSI peripherals rely on the HS clock on DSI clock lane as their clock
source. If the clock lane transitions between HS and LP states, it
can disrupt the functioning of such peripherals.

The mipi dsi mode flag MIPI_DSI_CLOCK_NON_CONTINUOUS already exists for
such peripheral drivers. Use it to configure the bit CLKLN_HS_FORCE_REQUEST
in DSI_LANE_CTRL.
Signed-off-by: NArchit Taneja <architt@codeaurora.org>
Signed-off-by: NRob Clark <robdclark@gmail.com>

During cmd rx, only new versions of H/W provide register to read back
the real number of byte returned by panel. For the old versions, reading
this register will not get the right number. In fact, we only need to
assume the returned data is the same size as we expected, because later
we will check the data type to detect error.
Signed-off-by: NHai Li <hali@codeaurora.org>

When things go badly we can get a lot of these error irqs.  Let's not
DoS the user.
Signed-off-by: NRob Clark <robdclark@gmail.com>

Signed-off-by: NHai Li <hali@codeaurora.org>

Avoid such errors at compilation time:
	format '%d' expects argument of type 'int', but argument 3 has type 'size_t'
Signed-off-by: NStephane Viau <sviau@codeaurora.org>

This change adds the DSI connector support in msm drm driver.

v1: Initial change
v2:
- Address comments from Archit + minor clean-ups
- Rebase to not depend on msm_drm_sub_dev change [Rob's comment]
v3: Fix issues when initialization is failed
Signed-off-by: NHai Li <hali@codeaurora.org>
Signed-off-by: NRob Clark <robdclark@gmail.com>