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    SubjectRe: [PATCH v2 1/1] pxa168: added initial support for TPO TD043MTEA1 LCD display on Aspenite
    From
    On Wed, Aug 25, 2010 at 10:26 PM, Marek Vasut <marek.vasut@gmail.com> wrote:
    > Dne Čt 26. srpna 2010 04:04:52 Mark F. Brown napsal(a):
    >> Signed-off-by: Mark F. Brown <mark.brown314@gmail.com>
    >> ---
    >>  arch/arm/mach-mmp/aspenite.c            |   60
    >> +++++++++++++++++++++++++++++++ arch/arm/mach-mmp/include/mach/pxa168.h |
    >>   8 ++++
    >>  arch/arm/mach-mmp/pxa168.c              |    4 ++
    >>  drivers/video/pxa168fb.c                |    4 +-
    >>  4 files changed, 74 insertions(+), 2 deletions(-)
    >>
    >> diff --git a/arch/arm/mach-mmp/aspenite.c b/arch/arm/mach-mmp/aspenite.c
    >> index 0629394..9e1bd6b 100644
    >> --- a/arch/arm/mach-mmp/aspenite.c
    >> +++ b/arch/arm/mach-mmp/aspenite.c
    >> @@ -23,6 +23,7 @@
    >>  #include <mach/mfp-pxa168.h>
    >>  #include <mach/pxa168.h>
    >>  #include <mach/gpio.h>
    >> +#include <video/pxa168fb.h>
    >>
    >>  #include "common.h"
    >>
    >> @@ -66,6 +67,36 @@ static unsigned long common_pin_config[] __initdata = {
    >>       GPIO115_I2S_BCLK,
    >>       GPIO116_I2S_RXD,
    >>       GPIO117_I2S_TXD,
    >> +
    >> +     /* LCD */
    >> +     GPIO56_LCD_FCLK_RD,
    >> +     GPIO57_LCD_LCLK_A0,
    >> +     GPIO58_LCD_PCLK_WR,
    >> +     GPIO59_LCD_DENA_BIAS,
    >> +     GPIO60_LCD_DD0,
    >> +     GPIO61_LCD_DD1,
    >> +     GPIO62_LCD_DD2,
    >> +     GPIO63_LCD_DD3,
    >> +     GPIO64_LCD_DD4,
    >> +     GPIO65_LCD_DD5,
    >> +     GPIO66_LCD_DD6,
    >> +     GPIO67_LCD_DD7,
    >> +     GPIO68_LCD_DD8,
    >> +     GPIO69_LCD_DD9,
    >> +     GPIO70_LCD_DD10,
    >> +     GPIO71_LCD_DD11,
    >> +     GPIO72_LCD_DD12,
    >> +     GPIO73_LCD_DD13,
    >> +     GPIO74_LCD_DD14,
    >> +     GPIO75_LCD_DD15,
    >> +     GPIO76_LCD_DD16,
    >> +     GPIO77_LCD_DD17,
    >> +     GPIO78_LCD_DD18,
    >> +     GPIO79_LCD_DD19,
    >> +     GPIO80_LCD_DD20,
    >> +     GPIO81_LCD_DD21,
    >> +     GPIO82_LCD_DD22,
    >> +     GPIO83_LCD_DD23,
    >>  };
    >>
    >>  static struct smc91x_platdata smc91x_info = {
    >> @@ -134,6 +165,34 @@ static struct i2c_board_info aspenite_i2c_info[]
    >> __initdata = { { I2C_BOARD_INFO("wm8753", 0x1b), },
    >>  };
    >>
    >> +static struct fb_videomode video_modes[] = {
    >> +     [0] = {
    >> +             .pixclock       = 30120,
    >> +             .refresh        = 60,
    >> +             .xres           = 800,
    >> +             .yres           = 480,
    >> +             .hsync_len      = 1,
    >> +             .left_margin    = 215,
    >> +             .right_margin   = 40,
    >> +             .vsync_len      = 1,
    >> +             .upper_margin   = 34,
    >> +             .lower_margin   = 10,
    >> +             .sync           = FB_SYNC_VERT_HIGH_ACT | FB_SYNC_HOR_HIGH_ACT,
    >> +     },
    >> +};
    >> +
    >> +struct pxa168fb_mach_info aspenite_lcd_info = {
    >> +     .id                     = "Graphic Frame",
    >> +     .modes                  = video_modes,
    >> +     .num_modes              = ARRAY_SIZE(video_modes),
    >> +     .pix_fmt                = PIX_FMT_RGB565,
    >> +     .io_pin_allocation_mode = PIN_MODE_DUMB_24,
    >> +     .dumb_mode              = DUMB_MODE_RGB888,
    >> +     .active                 = 1,
    >> +     .panel_rbswap           = 0,
    >> +     .invert_pixclock        = 0,
    >> +};
    >> +
    >>  static void __init common_init(void)
    >>  {
    >>       mfp_config(ARRAY_AND_SIZE(common_pin_config));
    >> @@ -143,6 +202,7 @@ static void __init common_init(void)
    >>       pxa168_add_twsi(1, NULL, ARRAY_AND_SIZE(aspenite_i2c_info));
    >>       pxa168_add_ssp(1);
    >>       pxa168_add_nand(&aspenite_nand_info);
    >> +     pxa168_add_fb(&aspenite_lcd_info);
    >>
    >>       /* off-chip devices */
    >>       platform_device_register(&smc91x_device);
    >
    >
    >
    > ----------------------------------------------
    > ^--- one patch above
    > SNIP, please split into two patches
    > v--- another patch below
    > ----------------------------------------------
    >
    >
    >
    >
    >> diff --git a/arch/arm/mach-mmp/include/mach/pxa168.h
    >> b/arch/arm/mach-mmp/include/mach/pxa168.h index 27e1bc7..220738f 100644
    >> --- a/arch/arm/mach-mmp/include/mach/pxa168.h
    >> +++ b/arch/arm/mach-mmp/include/mach/pxa168.h
    >> @@ -10,6 +10,7 @@ extern void __init pxa168_init_irq(void);
    >>  #include <mach/devices.h>
    >>  #include <plat/i2c.h>
    >>  #include <plat/pxa3xx_nand.h>
    >> +#include <video/pxa168fb.h>
    >>
    >>  extern struct pxa_device_desc pxa168_device_uart1;
    >>  extern struct pxa_device_desc pxa168_device_uart2;
    >> @@ -25,6 +26,7 @@ extern struct pxa_device_desc pxa168_device_ssp3;
    >>  extern struct pxa_device_desc pxa168_device_ssp4;
    >>  extern struct pxa_device_desc pxa168_device_ssp5;
    >>  extern struct pxa_device_desc pxa168_device_nand;
    >> +extern struct pxa_device_desc pxa168_device_fb;
    >>
    >>  static inline int pxa168_add_uart(int id)
    >>  {
    >> @@ -97,4 +99,10 @@ static inline int pxa168_add_nand(struct
    >> pxa3xx_nand_platform_data *info) {
    >>       return pxa_register_device(&pxa168_device_nand, info, sizeof(*info));
    >>  }
    >> +
    >> +static inline int pxa168_add_fb(struct pxa168fb_mach_info *mi)
    >> +{
    >> +     return pxa_register_device(&pxa168_device_fb, mi, sizeof(*mi));
    >> +}
    >> +
    >>  #endif /* __ASM_MACH_PXA168_H */
    >> diff --git a/arch/arm/mach-mmp/pxa168.c b/arch/arm/mach-mmp/pxa168.c
    >> index 652ae66..886eadb 100644
    >> --- a/arch/arm/mach-mmp/pxa168.c
    >> +++ b/arch/arm/mach-mmp/pxa168.c
    >> @@ -25,6 +25,7 @@
    >>  #include <mach/dma.h>
    >>  #include <mach/devices.h>
    >>  #include <mach/mfp.h>
    >> +#include <video/pxa168fb.h>
    >>
    >>  #include "common.h"
    >>  #include "clock.h"
    >> @@ -79,6 +80,7 @@ static APBC_CLK(ssp4, PXA168_SSP4, 4, 0);
    >>  static APBC_CLK(ssp5, PXA168_SSP5, 4, 0);
    >>
    >>  static APMU_CLK(nand, NAND, 0x01db, 208000000);
    >> +static APMU_CLK(lcd, LCD, 0x7f, 312000000);
    >>
    >>  /* device and clock bindings */
    >>  static struct clk_lookup pxa168_clkregs[] = {
    >> @@ -96,6 +98,7 @@ static struct clk_lookup pxa168_clkregs[] = {
    >>       INIT_CLKREG(&clk_ssp4, "pxa168-ssp.3", NULL),
    >>       INIT_CLKREG(&clk_ssp5, "pxa168-ssp.4", NULL),
    >>       INIT_CLKREG(&clk_nand, "pxa3xx-nand", NULL),
    >> +     INIT_CLKREG(&clk_lcd, "pxa168-fb", NULL),
    >>  };
    >>
    >>  static int __init pxa168_init(void)
    >> @@ -147,3 +150,4 @@ PXA168_DEVICE(ssp2, "pxa168-ssp", 1, SSP2, 0xd401c000,
    >> 0x40, 54, 55); PXA168_DEVICE(ssp3, "pxa168-ssp", 2, SSP3, 0xd401f000,
    >> 0x40, 56, 57); PXA168_DEVICE(ssp4, "pxa168-ssp", 3, SSP4, 0xd4020000,
    >> 0x40, 58, 59); PXA168_DEVICE(ssp5, "pxa168-ssp", 4, SSP5, 0xd4021000,
    >> 0x40, 60, 61); +PXA168_DEVICE(fb, "pxa168-fb", -1, LCD, 0xd420b000,
    >> 0x1c8);
    >> diff --git a/drivers/video/pxa168fb.c b/drivers/video/pxa168fb.c
    >> index c91a7f7..d3e597e 100644
    >> --- a/drivers/video/pxa168fb.c
    >> +++ b/drivers/video/pxa168fb.c
    >> @@ -559,7 +559,7 @@ static struct fb_ops pxa168fb_ops = {
    >>       .fb_imageblit   = cfb_imageblit,
    >>  };
    >>
    >> -static int __init pxa168fb_init_mode(struct fb_info *info,
    >> +static int pxa168fb_init_mode(struct fb_info *info,
    >>                             struct pxa168fb_mach_info *mi)
    >
    > Why do you remove __init from it ?
    >>  {
    >>       struct pxa168fb_info *fbi = info->par;
    >> @@ -599,7 +599,7 @@ static int __init pxa168fb_init_mode(struct fb_info
    >> *info, return ret;
    >>  }
    >>
    >> -static int __init pxa168fb_probe(struct platform_device *pdev)
    >> +static int pxa168fb_probe(struct platform_device *pdev)
    >
    > Why do you remove __init from it ? (DTTO)
    >>  {
    >>       struct pxa168fb_mach_info *mi;
    >>       struct fb_info *info = 0;
    >
    > Cheers
    >

    Hi Marek,

    1) I removed the __init because it was causing a section mismatch
    warning wth this kernel. Since pxa168fb_probe() is calling
    pxa168fb_init_mode(), I cannot declare pxa168fb_init_mode() as an
    __init function. If pxa168fb_probe gets called after the __init
    section is wiped then it will attempt to run the deleted
    pxa168fb_init_mode() code.

    WARNING: vmlinux.o(.data+0x17984): Section mismatch in reference from
    the variable pxa168fb_driver to the function
    .init.text:pxa168fb_probe()
    The variable pxa168fb_driver references
    the function __init pxa168fb_probe()
    If the reference is valid then annotate the
    variable with __init* or __refdata (see linux/init.h) or name the variable:
    *_template, *_timer, *_sht, *_ops, *_probe, *_probe_one, *_console,


    2) What is the logic behind the delineation between patch files? I
    cannot build patch #1 without patch #2 based on how you defined the
    split. I need all of it in order to function.

    -- Mark
    --
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