[Intel-gfx] [PATCH 02/10] drm/i915: Added port as parameter to the functions which does read/write of DSI Controller
Jani Nikula
jani.nikula at linux.intel.com
Thu Dec 4 01:14:01 PST 2014
On Thu, 04 Dec 2014, Gaurav K Singh <gaurav.k.singh at intel.com> wrote:
> This patch is in preparation of DSI dual link panels. For dual link
> panels, few packets needs to be sent to Port A or Port C or both. Based
> on the portno from MIPI Sequence Block#53, these sequences needs to be
> sent accordingly.
>
> v2: Addressed review comments by Jani
> - port variables named properly
>
> Signed-off-by: Gaurav K Singh <gaurav.k.singh at intel.com>
Reviewed-by: Jani Nikula <jani.nikula at intel.com>
> ---
> drivers/gpu/drm/i915/intel_dsi_cmd.c | 75 ++++++++++++----------------
> drivers/gpu/drm/i915/intel_dsi_cmd.h | 46 +++++++++--------
> drivers/gpu/drm/i915/intel_dsi_panel_vbt.c | 25 ++++++----
> 3 files changed, 74 insertions(+), 72 deletions(-)
>
> diff --git a/drivers/gpu/drm/i915/intel_dsi_cmd.c b/drivers/gpu/drm/i915/intel_dsi_cmd.c
> index 004fa91..8e30684 100644
> --- a/drivers/gpu/drm/i915/intel_dsi_cmd.c
> +++ b/drivers/gpu/drm/i915/intel_dsi_cmd.c
> @@ -48,13 +48,11 @@
> * For memory writes, these should probably be used for performance.
> */
>
> -static void print_stat(struct intel_dsi *intel_dsi)
> +static void print_stat(struct intel_dsi *intel_dsi, enum port port)
> {
> struct drm_encoder *encoder = &intel_dsi->base.base;
> struct drm_device *dev = encoder->dev;
> struct drm_i915_private *dev_priv = dev->dev_private;
> - struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
> - enum port port = intel_dsi_pipe_to_port(intel_crtc->pipe);
> u32 val;
>
> val = I915_READ(MIPI_INTR_STAT(port));
> @@ -104,13 +102,12 @@ enum dsi_type {
> };
>
> /* enable or disable command mode hs transmissions */
> -void dsi_hs_mode_enable(struct intel_dsi *intel_dsi, bool enable)
> +void dsi_hs_mode_enable(struct intel_dsi *intel_dsi, bool enable,
> + enum port port)
> {
> struct drm_encoder *encoder = &intel_dsi->base.base;
> struct drm_device *dev = encoder->dev;
> struct drm_i915_private *dev_priv = dev->dev_private;
> - struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
> - enum port port = intel_dsi_pipe_to_port(intel_crtc->pipe);
> u32 temp;
> u32 mask = DBI_FIFO_EMPTY;
>
> @@ -125,13 +122,11 @@ void dsi_hs_mode_enable(struct intel_dsi *intel_dsi, bool enable)
> }
>
> static int dsi_vc_send_short(struct intel_dsi *intel_dsi, int channel,
> - u8 data_type, u16 data)
> + u8 data_type, u16 data, enum port port)
> {
> struct drm_encoder *encoder = &intel_dsi->base.base;
> struct drm_device *dev = encoder->dev;
> struct drm_i915_private *dev_priv = dev->dev_private;
> - struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
> - enum port port = intel_dsi_pipe_to_port(intel_crtc->pipe);
> u32 ctrl_reg;
> u32 ctrl;
> u32 mask;
> @@ -149,7 +144,7 @@ static int dsi_vc_send_short(struct intel_dsi *intel_dsi, int channel,
>
> if (wait_for((I915_READ(MIPI_GEN_FIFO_STAT(port)) & mask) == 0, 50)) {
> DRM_ERROR("Timeout waiting for HS/LP CTRL FIFO !full\n");
> - print_stat(intel_dsi);
> + print_stat(intel_dsi, port);
> }
>
> /*
> @@ -167,13 +162,11 @@ static int dsi_vc_send_short(struct intel_dsi *intel_dsi, int channel,
> }
>
> static int dsi_vc_send_long(struct intel_dsi *intel_dsi, int channel,
> - u8 data_type, const u8 *data, int len)
> + u8 data_type, const u8 *data, int len, enum port port)
> {
> struct drm_encoder *encoder = &intel_dsi->base.base;
> struct drm_device *dev = encoder->dev;
> struct drm_i915_private *dev_priv = dev->dev_private;
> - struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
> - enum port port = intel_dsi_pipe_to_port(intel_crtc->pipe);
> u32 data_reg;
> int i, j, n;
> u32 mask;
> @@ -204,12 +197,12 @@ static int dsi_vc_send_long(struct intel_dsi *intel_dsi, int channel,
> * dwords, then wait for not set, then continue. */
> }
>
> - return dsi_vc_send_short(intel_dsi, channel, data_type, len);
> + return dsi_vc_send_short(intel_dsi, channel, data_type, len, port);
> }
>
> static int dsi_vc_write_common(struct intel_dsi *intel_dsi,
> int channel, const u8 *data, int len,
> - enum dsi_type type)
> + enum dsi_type type, enum port port)
> {
> int ret;
>
> @@ -217,50 +210,54 @@ static int dsi_vc_write_common(struct intel_dsi *intel_dsi,
> BUG_ON(type == DSI_GENERIC);
> ret = dsi_vc_send_short(intel_dsi, channel,
> MIPI_DSI_GENERIC_SHORT_WRITE_0_PARAM,
> - 0);
> + 0, port);
> } else if (len == 1) {
> ret = dsi_vc_send_short(intel_dsi, channel,
> type == DSI_GENERIC ?
> MIPI_DSI_GENERIC_SHORT_WRITE_1_PARAM :
> - MIPI_DSI_DCS_SHORT_WRITE, data[0]);
> + MIPI_DSI_DCS_SHORT_WRITE, data[0],
> + port);
> } else if (len == 2) {
> ret = dsi_vc_send_short(intel_dsi, channel,
> type == DSI_GENERIC ?
> MIPI_DSI_GENERIC_SHORT_WRITE_2_PARAM :
> MIPI_DSI_DCS_SHORT_WRITE_PARAM,
> - (data[1] << 8) | data[0]);
> + (data[1] << 8) | data[0], port);
> } else {
> ret = dsi_vc_send_long(intel_dsi, channel,
> - type == DSI_GENERIC ?
> - MIPI_DSI_GENERIC_LONG_WRITE :
> - MIPI_DSI_DCS_LONG_WRITE, data, len);
> + type == DSI_GENERIC ?
> + MIPI_DSI_GENERIC_LONG_WRITE :
> + MIPI_DSI_DCS_LONG_WRITE, data, len,
> + port);
> }
>
> return ret;
> }
>
> int dsi_vc_dcs_write(struct intel_dsi *intel_dsi, int channel,
> - const u8 *data, int len)
> + const u8 *data, int len, enum port port)
> {
> - return dsi_vc_write_common(intel_dsi, channel, data, len, DSI_DCS);
> + return dsi_vc_write_common(intel_dsi, channel, data, len, DSI_DCS,
> + port);
> }
>
> int dsi_vc_generic_write(struct intel_dsi *intel_dsi, int channel,
> - const u8 *data, int len)
> + const u8 *data, int len, enum port port)
> {
> - return dsi_vc_write_common(intel_dsi, channel, data, len, DSI_GENERIC);
> + return dsi_vc_write_common(intel_dsi, channel, data, len, DSI_GENERIC,
> + port);
> }
>
> static int dsi_vc_dcs_send_read_request(struct intel_dsi *intel_dsi,
> - int channel, u8 dcs_cmd)
> + int channel, u8 dcs_cmd, enum port port)
> {
> return dsi_vc_send_short(intel_dsi, channel, MIPI_DSI_DCS_READ,
> - dcs_cmd);
> + dcs_cmd, port);
> }
>
> static int dsi_vc_generic_send_read_request(struct intel_dsi *intel_dsi,
> int channel, u8 *reqdata,
> - int reqlen)
> + int reqlen, enum port port)
> {
> u16 data;
> u8 data_type;
> @@ -282,17 +279,15 @@ static int dsi_vc_generic_send_read_request(struct intel_dsi *intel_dsi,
> BUG();
> }
>
> - return dsi_vc_send_short(intel_dsi, channel, data_type, data);
> + return dsi_vc_send_short(intel_dsi, channel, data_type, data, port);
> }
>
> static int dsi_read_data_return(struct intel_dsi *intel_dsi,
> - u8 *buf, int buflen)
> + u8 *buf, int buflen, enum port port)
> {
> struct drm_encoder *encoder = &intel_dsi->base.base;
> struct drm_device *dev = encoder->dev;
> struct drm_i915_private *dev_priv = dev->dev_private;
> - struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
> - enum port port = intel_dsi_pipe_to_port(intel_crtc->pipe);
> int i, len = 0;
> u32 data_reg, val;
>
> @@ -312,13 +307,11 @@ static int dsi_read_data_return(struct intel_dsi *intel_dsi,
> }
>
> int dsi_vc_dcs_read(struct intel_dsi *intel_dsi, int channel, u8 dcs_cmd,
> - u8 *buf, int buflen)
> + u8 *buf, int buflen, enum port port)
> {
> struct drm_encoder *encoder = &intel_dsi->base.base;
> struct drm_device *dev = encoder->dev;
> struct drm_i915_private *dev_priv = dev->dev_private;
> - struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
> - enum port port = intel_dsi_pipe_to_port(intel_crtc->pipe);
> u32 mask;
> int ret;
>
> @@ -329,7 +322,7 @@ int dsi_vc_dcs_read(struct intel_dsi *intel_dsi, int channel, u8 dcs_cmd,
>
> I915_WRITE(MIPI_INTR_STAT(port), GEN_READ_DATA_AVAIL);
>
> - ret = dsi_vc_dcs_send_read_request(intel_dsi, channel, dcs_cmd);
> + ret = dsi_vc_dcs_send_read_request(intel_dsi, channel, dcs_cmd, port);
> if (ret)
> return ret;
>
> @@ -337,7 +330,7 @@ int dsi_vc_dcs_read(struct intel_dsi *intel_dsi, int channel, u8 dcs_cmd,
> if (wait_for((I915_READ(MIPI_INTR_STAT(port)) & mask) == mask, 50))
> DRM_ERROR("Timeout waiting for read data.\n");
>
> - ret = dsi_read_data_return(intel_dsi, buf, buflen);
> + ret = dsi_read_data_return(intel_dsi, buf, buflen, port);
> if (ret < 0)
> return ret;
>
> @@ -348,13 +341,11 @@ int dsi_vc_dcs_read(struct intel_dsi *intel_dsi, int channel, u8 dcs_cmd,
> }
>
> int dsi_vc_generic_read(struct intel_dsi *intel_dsi, int channel,
> - u8 *reqdata, int reqlen, u8 *buf, int buflen)
> + u8 *reqdata, int reqlen, u8 *buf, int buflen, enum port port)
> {
> struct drm_encoder *encoder = &intel_dsi->base.base;
> struct drm_device *dev = encoder->dev;
> struct drm_i915_private *dev_priv = dev->dev_private;
> - struct intel_crtc *intel_crtc = to_intel_crtc(encoder->crtc);
> - enum port port = intel_dsi_pipe_to_port(intel_crtc->pipe);
> u32 mask;
> int ret;
>
> @@ -366,7 +357,7 @@ int dsi_vc_generic_read(struct intel_dsi *intel_dsi, int channel,
> I915_WRITE(MIPI_INTR_STAT(port), GEN_READ_DATA_AVAIL);
>
> ret = dsi_vc_generic_send_read_request(intel_dsi, channel, reqdata,
> - reqlen);
> + reqlen, port);
> if (ret)
> return ret;
>
> @@ -374,7 +365,7 @@ int dsi_vc_generic_read(struct intel_dsi *intel_dsi, int channel,
> if (wait_for((I915_READ(MIPI_INTR_STAT(port)) & mask) == mask, 50))
> DRM_ERROR("Timeout waiting for read data.\n");
>
> - ret = dsi_read_data_return(intel_dsi, buf, buflen);
> + ret = dsi_read_data_return(intel_dsi, buf, buflen, port);
> if (ret < 0)
> return ret;
>
> diff --git a/drivers/gpu/drm/i915/intel_dsi_cmd.h b/drivers/gpu/drm/i915/intel_dsi_cmd.h
> index 46aa1ac..326a5ac 100644
> --- a/drivers/gpu/drm/i915/intel_dsi_cmd.h
> +++ b/drivers/gpu/drm/i915/intel_dsi_cmd.h
> @@ -36,77 +36,81 @@
> #define DPI_LP_MODE_EN false
> #define DPI_HS_MODE_EN true
>
> -void dsi_hs_mode_enable(struct intel_dsi *intel_dsi, bool enable);
> +void dsi_hs_mode_enable(struct intel_dsi *intel_dsi, bool enable,
> + enum port port);
>
> int dsi_vc_dcs_write(struct intel_dsi *intel_dsi, int channel,
> - const u8 *data, int len);
> + const u8 *data, int len, enum port port);
>
> int dsi_vc_generic_write(struct intel_dsi *intel_dsi, int channel,
> - const u8 *data, int len);
> + const u8 *data, int len, enum port port);
>
> int dsi_vc_dcs_read(struct intel_dsi *intel_dsi, int channel, u8 dcs_cmd,
> - u8 *buf, int buflen);
> + u8 *buf, int buflen, enum port port);
>
> int dsi_vc_generic_read(struct intel_dsi *intel_dsi, int channel,
> - u8 *reqdata, int reqlen, u8 *buf, int buflen);
> + u8 *reqdata, int reqlen, u8 *buf, int buflen, enum port port);
>
> int dpi_send_cmd(struct intel_dsi *intel_dsi, u32 cmd, bool hs);
> void wait_for_dsi_fifo_empty(struct intel_dsi *intel_dsi);
>
> /* XXX: questionable write helpers */
> static inline int dsi_vc_dcs_write_0(struct intel_dsi *intel_dsi,
> - int channel, u8 dcs_cmd)
> + int channel, u8 dcs_cmd, enum port port)
> {
> - return dsi_vc_dcs_write(intel_dsi, channel, &dcs_cmd, 1);
> + return dsi_vc_dcs_write(intel_dsi, channel, &dcs_cmd, 1, port);
> }
>
> static inline int dsi_vc_dcs_write_1(struct intel_dsi *intel_dsi,
> - int channel, u8 dcs_cmd, u8 param)
> + int channel, u8 dcs_cmd, u8 param, enum port port)
> {
> u8 buf[2] = { dcs_cmd, param };
> - return dsi_vc_dcs_write(intel_dsi, channel, buf, 2);
> + return dsi_vc_dcs_write(intel_dsi, channel, buf, 2, port);
> }
>
> static inline int dsi_vc_generic_write_0(struct intel_dsi *intel_dsi,
> - int channel)
> + int channel, enum port port)
> {
> - return dsi_vc_generic_write(intel_dsi, channel, NULL, 0);
> + return dsi_vc_generic_write(intel_dsi, channel, NULL, 0, port);
> }
>
> static inline int dsi_vc_generic_write_1(struct intel_dsi *intel_dsi,
> - int channel, u8 param)
> + int channel, u8 param, enum port port)
> {
> - return dsi_vc_generic_write(intel_dsi, channel, ¶m, 1);
> + return dsi_vc_generic_write(intel_dsi, channel, ¶m, 1, port);
> }
>
> static inline int dsi_vc_generic_write_2(struct intel_dsi *intel_dsi,
> - int channel, u8 param1, u8 param2)
> + int channel, u8 param1, u8 param2, enum port port)
> {
> u8 buf[2] = { param1, param2 };
> - return dsi_vc_generic_write(intel_dsi, channel, buf, 2);
> + return dsi_vc_generic_write(intel_dsi, channel, buf, 2, port);
> }
>
> /* XXX: questionable read helpers */
> static inline int dsi_vc_generic_read_0(struct intel_dsi *intel_dsi,
> - int channel, u8 *buf, int buflen)
> + int channel, u8 *buf, int buflen, enum port port)
> {
> - return dsi_vc_generic_read(intel_dsi, channel, NULL, 0, buf, buflen);
> + return dsi_vc_generic_read(intel_dsi, channel, NULL, 0, buf, buflen,
> + port);
> }
>
> static inline int dsi_vc_generic_read_1(struct intel_dsi *intel_dsi,
> int channel, u8 param, u8 *buf,
> - int buflen)
> + int buflen, enum port port)
> {
> - return dsi_vc_generic_read(intel_dsi, channel, ¶m, 1, buf, buflen);
> + return dsi_vc_generic_read(intel_dsi, channel, ¶m, 1, buf, buflen,
> + port);
> }
>
> static inline int dsi_vc_generic_read_2(struct intel_dsi *intel_dsi,
> int channel, u8 param1, u8 param2,
> - u8 *buf, int buflen)
> + u8 *buf, int buflen, enum port port)
> {
> u8 req[2] = { param1, param2 };
>
> - return dsi_vc_generic_read(intel_dsi, channel, req, 2, buf, buflen);
> + return dsi_vc_generic_read(intel_dsi, channel, req, 2, buf, buflen,
> + port);
> }
>
>
> diff --git a/drivers/gpu/drm/i915/intel_dsi_panel_vbt.c b/drivers/gpu/drm/i915/intel_dsi_panel_vbt.c
> index f6bdd44..7766c42 100644
> --- a/drivers/gpu/drm/i915/intel_dsi_panel_vbt.c
> +++ b/drivers/gpu/drm/i915/intel_dsi_panel_vbt.c
> @@ -94,16 +94,23 @@ static struct gpio_table gtable[] = {
> { GPIO_NC_11_PCONF0, GPIO_NC_11_PAD, 0}
> };
>
> +static inline enum port intel_dsi_seq_port_to_port(u8 port)
> +{
> + return port ? PORT_C : PORT_A;
> +}
> +
> static u8 *mipi_exec_send_packet(struct intel_dsi *intel_dsi, u8 *data)
> {
> - u8 type, byte, mode, vc, port;
> + u8 type, byte, mode, vc, seq_port;
> u16 len;
> + enum port port;
>
> byte = *data++;
> mode = (byte >> MIPI_TRANSFER_MODE_SHIFT) & 0x1;
> vc = (byte >> MIPI_VIRTUAL_CHANNEL_SHIFT) & 0x3;
> - port = (byte >> MIPI_PORT_SHIFT) & 0x3;
> + seq_port = (byte >> MIPI_PORT_SHIFT) & 0x3;
>
> + port = intel_dsi_seq_port_to_port(seq_port);
> /* LP or HS mode */
> intel_dsi->hs = mode;
>
> @@ -115,13 +122,13 @@ static u8 *mipi_exec_send_packet(struct intel_dsi *intel_dsi, u8 *data)
>
> switch (type) {
> case MIPI_DSI_GENERIC_SHORT_WRITE_0_PARAM:
> - dsi_vc_generic_write_0(intel_dsi, vc);
> + dsi_vc_generic_write_0(intel_dsi, vc, port);
> break;
> case MIPI_DSI_GENERIC_SHORT_WRITE_1_PARAM:
> - dsi_vc_generic_write_1(intel_dsi, vc, *data);
> + dsi_vc_generic_write_1(intel_dsi, vc, *data, port);
> break;
> case MIPI_DSI_GENERIC_SHORT_WRITE_2_PARAM:
> - dsi_vc_generic_write_2(intel_dsi, vc, *data, *(data + 1));
> + dsi_vc_generic_write_2(intel_dsi, vc, *data, *(data + 1), port);
> break;
> case MIPI_DSI_GENERIC_READ_REQUEST_0_PARAM:
> case MIPI_DSI_GENERIC_READ_REQUEST_1_PARAM:
> @@ -129,19 +136,19 @@ static u8 *mipi_exec_send_packet(struct intel_dsi *intel_dsi, u8 *data)
> DRM_DEBUG_DRIVER("Generic Read not yet implemented or used\n");
> break;
> case MIPI_DSI_GENERIC_LONG_WRITE:
> - dsi_vc_generic_write(intel_dsi, vc, data, len);
> + dsi_vc_generic_write(intel_dsi, vc, data, len, port);
> break;
> case MIPI_DSI_DCS_SHORT_WRITE:
> - dsi_vc_dcs_write_0(intel_dsi, vc, *data);
> + dsi_vc_dcs_write_0(intel_dsi, vc, *data, port);
> break;
> case MIPI_DSI_DCS_SHORT_WRITE_PARAM:
> - dsi_vc_dcs_write_1(intel_dsi, vc, *data, *(data + 1));
> + dsi_vc_dcs_write_1(intel_dsi, vc, *data, *(data + 1), port);
> break;
> case MIPI_DSI_DCS_READ:
> DRM_DEBUG_DRIVER("DCS Read not yet implemented or used\n");
> break;
> case MIPI_DSI_DCS_LONG_WRITE:
> - dsi_vc_dcs_write(intel_dsi, vc, data, len);
> + dsi_vc_dcs_write(intel_dsi, vc, data, len, port);
> break;
> }
>
> --
> 1.7.9.5
>
> _______________________________________________
> Intel-gfx mailing list
> Intel-gfx at lists.freedesktop.org
> http://lists.freedesktop.org/mailman/listinfo/intel-gfx
--
Jani Nikula, Intel Open Source Technology Center
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