Re: [PATCH v8 00/18] OMAP2,3: hwmod DSS Adaptation
Sumit Semwal sumit.sem...@ti.com writes: v8 of the DSS hwmod patch series fixes some issues based on findings of Kevin Hilman on beagle. Thanks. I re-tested on beagle and it looks good. I also briefly tested on beagle with PM. I tested suspend/resume to verify we could still hit full-chip retention. I also verified idle with and without screen blanked. As expected, with the screen (external DVI monitor) active, the DSS power domain did not hit retentiond during idle, but allowing the screen to blank, DSS powerdomain then hits idle. Feel free to add: Reviewed-by: Kevin Hilman khil...@ti.com Tested-by: Kevin Hilman khil...@ti.com Also, can you repost one more time with the linux-arm-ker...@lists.infradead.org Cc'd? Thanks. Kevin The VENC platform driver was not getting registered due to missed device name update for vdda_dac regulator in some board files. This was moved from 'omap_display' device to 'omap_venc' device in patch 14/18. Also, similarly for DSI platform driver, the regulator name 'vdds_dsi' needs two instances - one for dpi, and one for dsi. This version corrects the above two for all board files where 'vdda_dac' and 'vdds_dsi' regulators are defined. [patches 14/18 and 15/18] Post this change, boot w/ visible framebuffer and tux was successfully validated on beagle, 3430SDP and zoom3. A patch mentioned in http://www.mail-archive.com/linux-omap@vger.kernel.org/msg42384.html was needed to get OMAP3 to boot up on top of linux-next of 20110115. OMAP4 hwmod support will be posted after the acceptance of this basic change in the dss2 design. - [original patch introduction] This patch series decouples the Clocks for DSS in hwmod adaptation changes from this series. Another series would be posted which could be discussed w.r.t clocks in DSS across omap2,3. Removing the SYSCONFIG settings from DSS driver would also be part of these clock changes series and not covered in this series as it depends on some of the omap_hwmod framework changes w.r.t opt clocks handling. Summary of the hwmod DSS design: DSS, DISPC, DSI, RFBI, VENC are made as platform drivers each corresponding to the hwmod class in the hwmod database. Each of these platform drivers' init / deinit are handled from core.c's omap_dss_probe() in the exact sequence as required. No Hardcoding of silicon data: hwmod database abstracts the SOC data like base addr, irq numbers and are implemented in this patch series. Continue to have custom bus for display panels: omap_display driver continues to be a platform driver that registers the custom bus. It also continues to register the display panels(omap_dss_device) on the board to the panel drivers (omap_dss_driver) For Eg: primary lcd device would be registered with lcd panel driver. lcd panel driver if it is on a parallel interface would use library functions exported from dpi.o. if it is on a dsi interface would use library functions exported from dsi platform driver(dsi.o). Clocks: Handling of clocks in DSS only is one of the design approaches, that does not change the existing implementation. If each of the DSS HW IPs had to handle their own clocks, then corresponding clock changes can be requested in the hwmod database as well which is not the current design/implementation. As stated, this would be handled in another series seperately. For Eg: VENC would need 54MCLK which is termed as dss_opt clocks as of now apart for the dss main clocks. Currently VENC driver needs to be aware of this and has to use clk_get/put, clk_enable/disable, since VENC hwmod is not aware of 54MCLK. Current dss driver: --- 1. Omapdss platform driver - initialises necessary Ips dss, dispc. - also initialises Ips like sdi, dsi, venc, rfbi - creates a custom bus and registers the display devices/drivers connected on the board to the custom bus. 2. Suspend/resume of omapdss - in turn sends suspend/resume calls for each of the display devices registered to it. Modified change: --- Platform driver for each DSS HW IP in addition to the software omap_display driver. Omapdss platform driver - initialises necessary h/w IPs' platform drivers [dss, dispc, dsi, venc, rfbi] and software libraries like dpi, sdi. - continues to have a custom bus and registers the display devices and drivers connected on the board to the custom bus. - continues to handle suspend/resume of the display devices registered to the custom bus. DSS platform driver - initialises DSS IP alone - Handles the clocks related to the DSS and other DSSHW IPs like RFBI, DSI, VENC, DISPC. Previously this was a part of omapdss driver in core.c - Continues to handle the DSS IRQs. - No
Re: [PATCH v8 00/18] OMAP2,3: hwmod DSS Adaptation
Hi Kevin, On Fri, Jan 21, 2011 at 10:05 PM, Kevin Hilman khil...@ti.com wrote: Sumit Semwal sumit.sem...@ti.com writes: v8 of the DSS hwmod patch series fixes some issues based on findings of Kevin Hilman on beagle. Thanks. I re-tested on beagle and it looks good. I also briefly tested on beagle with PM. I tested suspend/resume to verify we could still hit full-chip retention. I also verified idle with and without screen blanked. As expected, with the screen (external DVI monitor) active, the DSS power domain did not hit retentiond during idle, but allowing the screen to blank, DSS powerdomain then hits idle. Feel free to add: Reviewed-by: Kevin Hilman khil...@ti.com Tested-by: Kevin Hilman khil...@ti.com Also, can you repost one more time with the linux-arm-ker...@lists.infradead.org Cc'd? Thanks. Thanks very much for helping out with the testing! I will post an updated one w/ your reviewed-by and tested-by in a bit. Best regards, ~Sumit. Kevin The VENC platform driver was not getting registered due to missed device name update for vdda_dac regulator in some board files. This was moved from 'omap_display' device to 'omap_venc' device in patch 14/18. Also, similarly for DSI platform driver, the regulator name 'vdds_dsi' needs two instances - one for dpi, and one for dsi. This version corrects the above two for all board files where 'vdda_dac' and 'vdds_dsi' regulators are defined. [patches 14/18 and 15/18] Post this change, boot w/ visible framebuffer and tux was successfully validated on beagle, 3430SDP and zoom3. A patch mentioned in http://www.mail-archive.com/linux-omap@vger.kernel.org/msg42384.html was needed to get OMAP3 to boot up on top of linux-next of 20110115. OMAP4 hwmod support will be posted after the acceptance of this basic change in the dss2 design. - [original patch introduction] This patch series decouples the Clocks for DSS in hwmod adaptation changes from this series. Another series would be posted which could be discussed w.r.t clocks in DSS across omap2,3. Removing the SYSCONFIG settings from DSS driver would also be part of these clock changes series and not covered in this series as it depends on some of the omap_hwmod framework changes w.r.t opt clocks handling. Summary of the hwmod DSS design: DSS, DISPC, DSI, RFBI, VENC are made as platform drivers each corresponding to the hwmod class in the hwmod database. Each of these platform drivers' init / deinit are handled from core.c's omap_dss_probe() in the exact sequence as required. No Hardcoding of silicon data: hwmod database abstracts the SOC data like base addr, irq numbers and are implemented in this patch series. Continue to have custom bus for display panels: omap_display driver continues to be a platform driver that registers the custom bus. It also continues to register the display panels(omap_dss_device) on the board to the panel drivers (omap_dss_driver) For Eg: primary lcd device would be registered with lcd panel driver. lcd panel driver if it is on a parallel interface would use library functions exported from dpi.o. if it is on a dsi interface would use library functions exported from dsi platform driver(dsi.o). Clocks: Handling of clocks in DSS only is one of the design approaches, that does not change the existing implementation. If each of the DSS HW IPs had to handle their own clocks, then corresponding clock changes can be requested in the hwmod database as well which is not the current design/implementation. As stated, this would be handled in another series seperately. For Eg: VENC would need 54MCLK which is termed as dss_opt clocks as of now apart for the dss main clocks. Currently VENC driver needs to be aware of this and has to use clk_get/put, clk_enable/disable, since VENC hwmod is not aware of 54MCLK. Current dss driver: --- 1. Omapdss platform driver - initialises necessary Ips dss, dispc. - also initialises Ips like sdi, dsi, venc, rfbi - creates a custom bus and registers the display devices/drivers connected on the board to the custom bus. 2. Suspend/resume of omapdss - in turn sends suspend/resume calls for each of the display devices registered to it. Modified change: --- Platform driver for each DSS HW IP in addition to the software omap_display driver. Omapdss platform driver - initialises necessary h/w IPs' platform drivers [dss, dispc, dsi, venc, rfbi] and software libraries like dpi, sdi. - continues to have a custom bus and registers the display devices and drivers connected on the board to the custom bus. - continues to handle suspend/resume of the display devices registered to the custom bus. DSS platform driver - initialises DSS IP
